WO2017050101A1 - Power driving system and vehicle having same - Google Patents

Power driving system and vehicle having same Download PDF

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Publication number
WO2017050101A1
WO2017050101A1 PCT/CN2016/097695 CN2016097695W WO2017050101A1 WO 2017050101 A1 WO2017050101 A1 WO 2017050101A1 CN 2016097695 W CN2016097695 W CN 2016097695W WO 2017050101 A1 WO2017050101 A1 WO 2017050101A1
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WO
WIPO (PCT)
Prior art keywords
gear
planet
input
ring gear
drive system
Prior art date
Application number
PCT/CN2016/097695
Other languages
French (fr)
Chinese (zh)
Inventor
杨冬生
廉玉波
张金涛
罗红斌
Original Assignee
比亚迪股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 比亚迪股份有限公司 filed Critical 比亚迪股份有限公司
Publication of WO2017050101A1 publication Critical patent/WO2017050101A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B60K17/16—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential gearing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/28—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or type of power take-off

Definitions

  • the present invention relates to a power drive system and a vehicle having the same.
  • the differential includes a driven gear of the final drive (main reduction drive gear), a planetary gear, a center wheel, etc., and the planetary gear is mounted on the stator through the square shaft and the sleeve.
  • the sub-plate of the moving gear is meshed with the center wheel, and the rotating and moving functions are realized by the rotating pair and the plane moving pair.
  • the center wheel is connected to the left and right shafts through the angular positioning pin and the cylindrical pair or spline to achieve the output rotation. The purpose of the moment.
  • the differential cancels the original left and right housings of the differential, the planetary gear shaft and the like, and the square shaft and the sleeve are directly used to mount the planetary gears on the auxiliary plate of the driven gear of the final drive, effectively
  • the number of parts of the differential is reduced, the structure is simplified, and the weight is reduced.
  • this differential utilizes a symmetrical bevel gear structure to achieve the inter-wheel differential, but only a partial innovation for the conventional symmetrical bevel gear differential does not really solve the excessive axial size of the differential structure.
  • the present invention aims to solve at least one of the above technical problems in the prior art to some extent.
  • the present invention proposes a power drive system in which the differential of the power drive system utilizes the principle of planetary differential to achieve a differential function, which is compact and simple.
  • the invention also proposes a vehicle having the power transmission system.
  • a power drive system includes: a differential including: a first planet carrier, a first planet gear, and a first ring gear, the first planet gear and the first planet a first planetary gear that meshes with the first ring gear; a second planet carrier, a second planet gear, and a second ring gear, the second planet gear being coupled to the second planet carrier, a second planet gear meshes with the second ring gear and the second planet gear also meshes with the first planet gear, wherein the first ring gear and the second ring gear constitute the differential gear Two power outputs; an input portion, the input portion, the first planet carrier and the second planet carrier are coaxially arranged and the input portion is coupled to the first planet carrier and the second planet carrier a power output shaft, the power output shaft is disposed in linkage with the input portion; and a plurality of input shafts, one of the plurality of input shafts is disposed to be selectively coupled to the power output shaft, The remaining ones of the plurality of input shafts are arranged to
  • the differential of the power drive system according to the embodiment of the present invention realizes the differential function by using the principle of planetary differential, and is compact and simple.
  • the power drive system further includes an engine configured to selectively engage at least one of the plurality of input shafts.
  • an output gear is disposed on the power output shaft, and the output gear is meshed with the input portion.
  • the power take-off shaft is provided with an idler driven gear
  • the idler driven gear is linked with the one of the plurality of input shafts
  • the system also includes a synchronizer configured to synchronize the power take off shaft with the idler driven gear.
  • the synchronizer is disposed on the power take-off shaft and is configured to engage the idler driven gear.
  • the power output shaft is fixedly provided with a fixed driven gear
  • the fixed driven gear is interlocked with the remaining ones of the plurality of input shafts.
  • the power take-off shaft is provided with an idler driven gear and is fixedly provided with a fixed driven gear
  • the power drive system further includes a synchronizer: the synchronizer is set for synchronization The power output shaft and the idler driven gear; each input shaft is fixedly provided with a fixed driving gear, and the empty sleeve driven gear and the fixed driven gear respectively mesh with corresponding fixed driving gears.
  • the first planet gear and the second planet gear partially overlap in the axial direction.
  • the first planet gear includes: a first tooth portion and a second tooth portion
  • the second planet gear includes: a third tooth portion and a fourth tooth portion, the first tooth portion Engaging with the first ring gear, the second tooth portion and the third tooth portion overlap and mesh with each other in the axial direction, and the fourth tooth portion meshes with the second ring gear.
  • the first ring gear and the second ring gear are symmetrical structures, and each of the first ring gear and the second ring gear includes: a body flat portion and a setting a plurality of teeth are disposed on an inner wall surface of the outer peripheral edge of the main body flat portion, and a plurality of teeth are disposed on an inner wall surface of the annular side wall portion, and a cavity is defined between the main body flat portion and the annular side wall portion.
  • a cavity of the first ring gear and a cavity of the second ring gear face each other to constitute an installation space, the first planet carrier and the first planet gear and the second planet carrier and the first The two planetary wheels are housed in the installation space.
  • the input portion is configured as an input end gear, the input end gear being configured to be annular and sleeved on the first ring gear and the second ring outer surface.
  • a gap is provided between the first ring gear and the second ring gear, the input The end gear surrounds and covers the gap.
  • the power drive system further includes: an intermediate connection structure for connecting the first planet carrier and the second planet carrier to the input portion, the intermediate connection The structure includes: a first connecting bracket for connecting the first planet carrier and the input portion, and a second connecting bracket for connecting the second planet carrier and The input portion, wherein each of the first connection bracket and the second connection bracket includes: a center body portion and a plurality of extension arm portions, the plurality of extension arm portions being disposed at the center body portion On the outer peripheral surface, the plurality of extending arm portions are radially distributed around the central body portion, wherein the plurality of extending arm portions are for connecting with the input portion.
  • each of the first planet gears is configured with a first planetary axle, and two ends of the first planetary axle are respectively coupled to the first planet carrier and the second planet carrier, each The second planet gears are provided with a second planetary axle, and the two ends of the second planetary axle are connected to the first planet carrier and the second planet carrier, respectively.
  • the revolution radius of the first planet gear is the same as the revolution radius of the second planet gear.
  • the power drive system further includes: a second motor generator and a third motor generator, the second motor generator is coupled with the first ring gear, and the third motor generator The second ring gear is linked.
  • the first outer ring surface of the first ring gear is provided with a first outer tooth
  • the outer peripheral surface of the second ring gear is provided with a second outer tooth
  • the second motor generator and The first external teeth are linked
  • the third motor generator is linked with the second external teeth
  • the plurality of input shafts include a first input shaft, a second input shaft, and a third input shaft, and the third input shaft is sleeved on the second input shaft, the Two input shafts are sleeved on the first input shaft, and the engine is connected to the first input shaft, the second input shaft and the third input shaft via a three-clutch.
  • the first ring gear is linked with the left front wheel
  • the second ring gear is linked with the right front wheel
  • the power drive system further includes: a fourth motor generator and a fifth motor generator
  • the fourth motor generator is associated with the left rear wheel
  • the fifth motor generator is coupled with the right rear wheel
  • the anti-skid synchronizer is configured to selectively synchronize the left rear wheel And a right rear wheel such that the left rear wheel and the right rear wheel rotate in synchronization.
  • a vehicle according to an embodiment of the present invention includes a power drive system according to the above embodiment of the present invention.
  • FIG. 1 is an exploded view of a viewing angle of a differential according to an embodiment of the present invention
  • FIG. 2 is an exploded view of another perspective of a differential according to an embodiment of the present invention.
  • FIG. 3 is a perspective view of a differential according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a planar principle of a differential according to an embodiment of the present invention.
  • Figure 5 is a perspective view of a differential in which a second planet carrier and a second ring gear are not shown, in accordance with an embodiment of the present invention
  • Figure 6 is a schematic view showing the meshing of the first planetary gear and the second planetary gear
  • Figure 7 is a schematic diagram of the meshing principle of the first planetary gear and the second planetary gear
  • Figure 8 is a perspective view of a first ring gear or a second ring gear in accordance with an embodiment of the present invention.
  • Figure 9 is a perspective view of a first ring gear or a second ring gear in accordance with another embodiment of the present invention.
  • Figure 10 is a schematic illustration of a power drive system in accordance with one embodiment of the present invention.
  • FIG 11 is a schematic illustration of a power drive system in accordance with another embodiment of the present invention.
  • Figure 12 is a schematic illustration of a power drive system in accordance with still another embodiment of the present invention.
  • FIG. 13 is a schematic illustration of a power drive system in accordance with still another embodiment of the present invention.
  • Figure 14 is a schematic illustration of a power drive system in accordance with still another embodiment of the present invention.
  • FIG. 15 is a schematic illustration of a power drive system in accordance with still another embodiment of the present invention.
  • Figure 16 is a schematic illustration of a power drive system in accordance with still another embodiment of the present invention.
  • FIG. 17 is a schematic illustration of a power drive system in accordance with still another embodiment of the present invention.
  • Figure 18 is a schematic illustration of a power drive system in accordance with still another embodiment of the present invention.
  • Figure 19 is a schematic illustration of a power drive system in accordance with still another embodiment of the present invention.
  • Figure 20 is a schematic illustration of a vehicle in accordance with an embodiment of the present invention.
  • first and second are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.
  • features defining “first” and “second” may include one or more of the features either explicitly or implicitly.
  • the meaning of "a plurality” is at least two, such as two, three, etc., unless specifically defined otherwise.
  • the terms “installation”, “connected”, “connected”, “fixed” and the like shall be understood broadly, and may be either a fixed connection or a detachable connection, unless explicitly stated and defined otherwise. Or in one; can be Mechanical connections can also be electrical connections or can communicate with each other; they can be directly connected or indirectly connected via an intermediate medium, which can be the internal communication of two components or the interaction of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.
  • the first feature "on” or “under” the second feature may include direct contact of the first and second features, and may also include first and second features, unless otherwise specifically defined and defined. It is not in direct contact but through additional features between them.
  • the first feature "above”, “above” and “above” the second feature includes the first feature directly above and above the second feature, or merely indicating that the first feature level is higher than the second feature.
  • the first feature “below”, “below” and “below” the second feature includes the first feature directly below and below the second feature, or merely the first feature level being less than the second feature.
  • a power drive system 1000 according to an embodiment of the present invention, which can be applied to a vehicle, will be described in detail below with reference to the accompanying drawings.
  • a power drive system 1000 mainly includes a differential 100, a transmission 104, and a first motor generator 401.
  • the transmission 104 is coupled to the differential 100 and the first motor generator. Between machines 401.
  • differential 100 The specific structure of the differential 100 will first be described in detail below in accordance with the illustrated embodiment, and other configurations for the power drive system 1000 will be described after the construction of the differential 100 is described in detail.
  • a differential 100 according to an embodiment of the present invention will be described in detail below with reference to FIGS. 1-9.
  • the differential 100 can be used for inter-wheel differential or inter-axle differential for the example of inter-wheel differential.
  • the differential 100 enables the left and right drive wheels to roll at different angular velocities when the vehicle is turning or traveling on uneven roads to ensure a pure rolling motion between the drive wheels on both sides and the ground.
  • a differential 100 may include a first planet carrier 11, a first planet gear 12 and a first ring gear 13, and a second planet carrier 21, a second planet gear 22, and Second ring gear 23.
  • both the first planet carrier 11 and the second planet carrier 21 can be constructed as a circular plate-like structure, which can reduce the axial dimension of the differential 100 to some extent.
  • the first planet carrier 11 and the second planet carrier 21 may be of a split structure, that is, the first planet carrier 11 and the second planet carrier 21 are separated from each other, and since the individual small parts are relatively easy to form, the first will be The separate processing of the carrier 11 and the second carrier 21 can simplify the manufacturing process and improve the machining accuracy.
  • the first planet gears 12 are disposed on the first planet carrier 11, for example, each of the first planet gears 12 is provided with a first planet gear axle 14, a first planet gear axle 14
  • the two ends are rotatably supported on the first planet carrier 11 and the second planet carrier 21, respectively, such that both ends of the first planet axle 14 are rotatably supported by the first planet carrier 11 by bearings
  • the second planet carrier 21 is in a corresponding axial bore, and the first planet gear 12 can be fixed to the corresponding first planet axle 14.
  • the two ends of the first planetary axle 14 and the first planet carrier 11 and the second The carrier 21 can also be fixedly connected.
  • the two ends of the first planetary axle 14 are respectively welded and fixed to the shaft holes corresponding to each other on the first carrier 11 and the second carrier 21, and the first planetary gear 12 is at this time.
  • the purpose of connecting the first planet carrier 11 and the second planet carrier 21 can be achieved by the first planetary axle 14 such that the first planet carrier 11 and the second planet carrier 21 maintain the same speed and the same direction (ie, the first The carrier 11 and the second carrier 21 are interlocked, and with this connection, the first carrier 11 and the second carrier 21 can support/fix the first planetary axle 14 well, preventing the first planetary axle The 14 is disconnected from the single planet carrier causing the differential 100 to fail.
  • the first planet gear 12 meshes with the first ring gear 13, specifically in the form of internal engagement, that is, the first planet gear 12 is located inside the first ring gear 13 and with the first ring gear 13 The upper teeth mesh.
  • the first planet gears 12 may be plural and distributed inside the first ring gear 13 at circumferentially equiangular intervals, for example, the first planet gears 12 may be three, and any two adjacent first planet wheels 12 The angle between the intervals is 120°.
  • the second planet gears 22 are disposed on the second planet carrier 21, for example, each of the second planet gears 22 is provided with a second planet gear axle 24, such as a second planet axle.
  • the two ends of the two ends are rotatably supported by the bearings in the shaft holes corresponding to the first planet carrier 11 and the second planet carrier 21, and the second planet gears 22 can be fixed to the corresponding second planet gear axles. 24 on.
  • the two ends of the second planetary axle 24 may also be fixedly coupled to the first planet carrier 11 and the second planet carrier 21, for example, the two ends of the second planetary axle 24 are respectively coupled to the first planet carrier 11 and
  • the second planetary carrier 21 is welded and fixed to the corresponding axial hole.
  • the second planetary gear 22 is rotatably sleeved on the corresponding second planetary axle 24, for example, the second planetary gear 22 is rotatably fitted through the bearing.
  • the purpose of connecting the first planet carrier 11 and the second planet carrier 21 can be achieved by the second planetary gear shaft 24, so that the first planet carrier 11 and the second planet carrier 21 maintain the same speed and the same direction, and this is adopted.
  • the first planet carrier 11 and the second planet carrier 21 can support/fix the second planetary axle 24 well, preventing the second planetary axle 24 from being disconnected from the single planet carrier, thereby causing the differential 100 to fail.
  • first planet carrier 11 and the second planet carrier 21 in order to maintain the same speed and the same direction of movement of the first planet carrier 11 and the second planet carrier 21, not only the first planetary axle 14 and/or the second planetary axle may be employed.
  • the method of 24 is realized, and the first planet carrier 11 and the second planet carrier 21 can also be directly fixedly connected through the intermediate connection structure 6, or the first planet carrier 11 and the second planet carrier can be connected by using the planetary axle and the intermediate connection structure 6 at the same time. 21, and the specific configuration regarding the intermediate connection structure 6 will be described in detail below.
  • the second planetary gear 22 meshes with the second ring gear 23, specifically in the form of internal engagement, that is, the second planetary gear 22 is located inside the second ring gear 23 and with the second ring gear 23
  • the upper teeth mesh.
  • the second planet gears 22 may be plural and distributed inside the second ring gear 23 at circumferentially equiangular intervals, for example, the second planet gears 22 may be three, and any two adjacent two planet wheels 22 may be adjacent. The angle between the intervals is 120°.
  • FIG. 4 is a schematic diagram of the planar principle of the differential 100 according to an embodiment of the present invention, wherein Schematically showing the meshing relationship between the first planet gear 12 and the second planet gear 22 and the meshing relationship between the first planet gear 12 and the first ring gear 13, the second planet gear 22 and the second ring gear 23, Since FIG. 4 is a plan view and at the same time the above three meshing relationships are shown, the relative positional relationship of the components is merely illustrative and does not represent or imply the actual spatial arrangement of the components.
  • first planet gear 12 and the second planet gear 22 are multiple, the plurality of first planet gears 12 and the plurality of second planet gears 22 are respectively engaged.
  • first planetary gear 12 and the second planetary gear 22 are both three, and the first first planetary gear 12 can be associated with the corresponding first second planetary gear.
  • the second first planet gear 12 can mesh with the corresponding second second planet gear 22, and the third first planet gear 12 can mesh with the corresponding third second planet gear 22, so that there are many
  • the first planetary gear 12 and the second planetary gear 22, which are meshed with each other, are more stable when the differential 100 transmits power, and the power is transmitted between the plurality of sets of the first planetary gear 12 and the second planetary gear 22 that are meshed with each other. ,reliable.
  • the revolution axis of the first planet gear 12 coincides with the revolution axis of the second planet gear 22, that is, the first planet gear 12 and the second planet gear 22 have the same revolution axis O, and first The orbital radius of the planet gear 12 and the second planet gear 22 (i.e., the distance of the central axis of the planet gear from the revolution axis O) is the same.
  • the first planet gear 12 is in meshing engagement with the second planet gear 22.
  • the first planetary gear 12 it not only meshes with the first ring gear 13, but also meshes with the second planetary gear 22, and for the second planetary gear 22, it not only meshes with the second ring gear 23, At the same time, it also meshes with the first planet gear 12.
  • the first ring gear 13 and the second ring gear 23 can constitute two power output ends of the differential 100, and the first carrier 11 and the second carrier 21 correspond to each other to form a differential.
  • the power input end of 100 for example, in one embodiment of the invention, the first planet carrier 11 and the second planet carrier 21 are interlocked with the input unit 3, in other words, the input unit 3, the first planet carrier 11 and the second planet carrier 21
  • the state of motion is the same (ie, at the same speed, in the same direction).
  • the input portion 3, the first planet carrier 11 and the second planet carrier 21 are coaxially arranged.
  • the power output from the external power source can be input from the input unit 3, and can be output from the first ring gear 13 and the second ring gear 23, respectively, after the differential action of the differential 100.
  • the first ring gear 13 can be connected to the left half shaft, and the left half shaft can be connected to the left wheel.
  • the second ring gear 23 can be connected to the right half shaft, and the right half shaft can be connected to the right side wheel.
  • the power output from the power source such as the engine and/or the motor can be output to the input unit 3 through the deceleration of the final drive, and the input unit 3
  • the first planet carrier 11 and the second planet carrier 21 are driven to rotate synchronously. If the vehicle is traveling on a smooth road surface and there is no turning at this time, the left wheel and the right wheel are theoretically rotated at the same speed.
  • the differential 100 does not function as a differential, and the first carrier 11 and the second carrier 21 are at the same speed.
  • the first ring gear 13 and the second ring gear 23 rotate at the same speed and in the same direction, and the first planetary gear 12 and the second planetary gear 22 only revolve and do not rotate. If the vehicle is driving on an uneven road surface or the vehicle is turning, the left and right wheels are theoretically different in rotational speed, and the rotational speeds of the first ring gear 13 and the second ring gear 23 are also different, that is, there is a difference in rotational speed.
  • the first planet gear 12 and the second planet gear 22 are both revolving Also rotating, the rotation of the first planet gear 12 and the second planet gear 22 causes one of the first ring gear 13 and the second ring gear 23 to increase speed, the other to decelerate, the speed increasing ring gear and the decelerating ring gear
  • the difference in rotational speed is the difference in rotational speed between the left and right wheels, thereby achieving differential action.
  • the differential 100 utilizes the principle of planetary differential, has higher space utilization in structure and connection form, smaller axial dimension, and is more advantageous in production and assembly.
  • a structural form can not only avoid the dimensional defects in the axial direction and the radial direction of the bevel gear, but also can better utilize the hollow space inside the main reduction driven gear, thereby achieving better space utilization and greatly facilitating the difference.
  • the overall arrangement of the speedometer 100 assembly and the limitation on the weight, as well as higher reliability and better transmission efficiency, are beneficial to improve the reliability of the power transmission chain and the power output fluency during cornering. This is more practical than a symmetrical bevel gear differential.
  • the first planet gear 12 and the second planet gear 22 partially overlap in the axial direction (left-right direction in Figures 6-7), that is, the first planet gear 12 is only partially overlapped with the second planet gear 22, the remaining portions are staggered, the overlapping portions of the first planet gear 12 and the second planet gear 22 are engageable with each other, and the staggered portions are engageable with the respective ring gears.
  • the first planetary gear 12 may include a first tooth portion 151 and a second tooth portion 152 (with a broken line of K2 in FIG. 7), and the second planetary gear 22 may include a third tooth portion. 153 and the fourth tooth portion 154 (with a broken line of K1 in FIG. 7), the second tooth portion 152 and the third tooth portion 153 constitute an overlapping portion, that is, the second tooth portion 152 and the third tooth portion 153 are axially aligned.
  • the first tooth portion 151 and the fourth tooth portion 154 are axially offset and mesh with the corresponding ring gears, that is, the first tooth portion 151 is meshed with the first ring gear 13 and the fourth tooth portion 154 is overlapped and engaged.
  • the second ring gear 23 is engaged. It should be noted that the positions of the broken lines K1 and K2 can be adjusted according to actual conditions, and are not limited herein.
  • the axial dimension of the differential 100 is made more compact, and the volume of the differential 100 is more compact, which facilitates the installation and arrangement of the differential 100.
  • the number of teeth of the first ring gear 13 is equal to the number of teeth of the second ring gear 23, and the number of teeth of the first planet gear 12 is equal to the number of teeth of the second planet gear 22.
  • the first planetary gear 12 and the second planetary gear 22 are both spur gears, and the differential 100 using the spur gear is more compact in structure than the conventional symmetrical bevel gear differential, in particular It has higher space utilization in structure and connection form, smaller axial dimension, and is more advantageous in production and assembly.
  • first ring gear 13 and the second ring gear 23 will be described in detail below in conjunction with specific embodiments.
  • the first ring gear 13 and the second ring gear 23 are symmetric structures, in other words, the first ring gear 13 and the second ring gear 23 are symmetrically arranged, which can increase the versatility of the ring gear and reduce cost.
  • each of the first ring gear 13 and the second ring gear 23 includes a main body flat plate portion 161 and an annular side wall portion provided at an outer peripheral edge of the main body flat plate portion 161.
  • the main body flat portion 161 and the ring side Wall portion 162 can be an integrally formed component.
  • a plurality of gear teeth are disposed on the inner wall surface of the annular side wall portion 162, and the cavity A1, A2 is defined between the main body flat plate portion 161 and the annular side wall portion 162, that is, the main body flat portion 161 and the annular side of the first ring gear 13
  • a cavity A1 is defined between the wall portions 162, and a cavity A2 (FIG.
  • the installation space A is such that the structure of the differential 100 is relatively more compact, takes up less volume, and is easier to arrange, while the first ring gear 13 and the second ring gear 23 function as an outer casing to protect the housing therein.
  • the planet carrier and planet wheels enhance life.
  • the installation space A defined by the first ring gear 13 and the second ring gear 23 is relatively closed, and the external debris is not easily entered into the installation space A to affect the moving parts, thereby ensuring stable operation of the differential 100.
  • the input 3 is configured as an input gear.
  • the input end gear 3 is configured to be annular (the teeth of the input end gear 3 are formed on the outer peripheral surface) and sleeved on the outer surfaces of the first ring gear 13 and the second ring gear 23, It is understood that the inner diameter of the input end gear 3 may be larger than the outer diameters of the first ring gear 13 and the second ring gear 23, such that the input end gear 3 is placed outside the first ring gear 13 and the second ring gear 23 The components inside the two ring gears are not exposed, protecting the components inside the ring gear.
  • the first ring gear 13 and the second ring gear 23 are provided with a gap D in the axial direction, that is, the first ring gear 13 and the second ring gear 23 are axially spaced apart from each other, not Closely fit.
  • the width of the meshing portion of the first planet gear 12 and the second planet gear 22 determines the size of the gap D to some extent (in addition, the extending arm portion 63 of the intermediate connecting structure 6)
  • the thickness may also determine the gap D, which will be explained below.
  • the width D of the meshing portion of the two planet gears 22 is used to determine the gap D as an example, that is, the meshing of the first planet gear 12 with the second planet gear 22
  • the width of the portion may be equal to the minimum value of the gap D, so that by controlling the width of the meshing portion of the first planet gear 12 and the second planet gear 22, the size of the gap D can be indirectly controlled, for those skilled in the art,
  • the first planetary gear 12 and the second planetary gear 22 are ensured to stably transmit power and the service life of the first planetary gear 12 and the second planetary gear 22, and the first planetary gear 12 and the second planetary gear 22 can be meshed.
  • the width of the portion is relatively narrow, so that the gap D can be effectively reduced, so that the axial dimension of the differential 100 is smaller, more compact, and easier to arrange.
  • the input gear 3 surrounds and covers the gap D.
  • the sealing space of the installation space A is better, and the external debris is more difficult to enter into the installation space A to affect the moving parts, thereby further ensuring the stable operation of the differential 100, and at the same time saving the difference at least to some extent.
  • the axial space and radial space of the speeder are better, and the external debris is more difficult to enter into the installation space A to affect the moving parts, thereby further ensuring the stable operation of the differential 100, and at the same time saving the difference at least to some extent.
  • the input end gear 3 is the main reducer driven gear.
  • the hollow space inside the main reduction driven gear can be better utilized, thereby achieving better space utilization, and greatly facilitating the whole vehicle layout of the differential 100 assembly. Set and limit the weight.
  • the first ring gear 13 and the second ring gear 23 both include the main body flat plate portion 161 and the annular side wall portion 162, and the above FIG. 4 (combined view)
  • the gap D of 1 - 2) refers to the distance between the annular side wall portion 162 of the first ring gear 13 and the annular side wall portion 162 of the second ring gear 23.
  • each of the first ring gear 13 and the second ring gear 23 further includes an annular flange portion 163, an annular flange The portion 163 extends from the end surface of the annular side wall portion 162 in a direction away from the main body flat portion 161.
  • the inner diameter of the annular flange portion 163 may be substantially equal to the outer diameter of the annular side wall portion 162, such that the ring The flange portion 163 corresponds to protrude outward in the radial direction from the annular side wall portion 162 (that is, the outer circumferential surface of the first ring gear 13 or the second ring gear 23).
  • the outer diameter of the annular flange portion 163 may be substantially equal to the outer diameter of the annular side wall portion 162, and the inner diameter of the annular flange portion 163 may be larger than the inner diameter of the annular side wall portion 162, that is, The thickness of the annular flange portion 163 is thinner than the thickness of the annular side wall portion 162.
  • the gap D between the two ring gears refers to the gap between the annular side wall portions 162 of the two ring gears.
  • the gap D between the two ring gears refers to the gap between the annular flange portions 163 of the two ring gears.
  • the intermediate connection structure 6 will be described in detail below in conjunction with a specific embodiment.
  • the intermediate connection structure 6 functions to connect the first planet carrier 11 and the second planet carrier 21 to the input portion 3 such that the first planet carrier 11, the second planet carrier 21 and the input
  • the part 3 can be coaxially linked.
  • the intermediate connection structure 6 can also be fixedly connected to the first planet carrier 11 and the second planet carrier 21, respectively, and the input portion 3 is fixed to the outer surface of the intermediate connection structure 6, and the first planet carrier 11 can also be made.
  • the two planet carriers 21 and the input unit 3 can be coaxially linked.
  • the present invention provides a possible embodiment for the specific construction of the intermediate connection structure 6, which of course does not mean or suggest that the intermediate connection structure 6 of the present invention can only adopt the structure of this embodiment. That is, the intermediate connection structure 6 to be described in the following embodiments is only one possible implementation manner, and is not a limitation on the scope of protection of the present invention.
  • the input portion 3 in this embodiment is an annular input end gear 3
  • the intermediate connection structure 6 includes a first connection bracket 61 and a second connection bracket 62, and the first connection bracket 61 is used for connection.
  • the first carrier 11 and the input portion 3 (ie, the input end gear 3), and the second connecting bracket 62 is used to connect the second carrier 21 with the input portion 3 (ie, the input end gear 3), wherein the first connecting bracket 61 and the
  • the two connection brackets 62 may have the same structure, and each may include: a central body portion 64 and an extension arm portion 63 (in conjunction with FIG. 5), wherein the central body portion of the first connection bracket 61 and the central body of the second connection bracket 62
  • the portions may be integrally formed to form a common central body portion, but are not limited thereto.
  • the thickness of the extending arm portion 63 also determines the size of the gap D to some extent. Specifically, when the meshing width of the two planet wheels is equal to the overall thickness of the extending arm portion 63, the gap D can be sized to two planets The meshing width of the wheel or the overall thickness of the extended arm portion 63 is substantially equal. When the overall thickness of the extending arm portion 63 is greater than the meshing width of the two planet wheels, the gap D may be substantially equal in size to the entire thickness of the extending arm portion 63.
  • the gap D may be substantially equal to the meshing width of the two planet wheels.
  • the overall thickness of the extending arm portion 63 refers to the sum of the thickness of the extending arm portion 63 of the first connecting bracket 61 and the thickness of the extending arm portion 63 of the second connecting bracket 62.
  • the plurality of extending arm portions 63 are provided on the outer peripheral surface of the center body portion 64, and the plurality of extending arm portions 63 and the central body portion 64 may be integrally formed, but are not limited thereto.
  • the plurality of extension arm portions 63 are generally radially distributed around the central body portion 64. In the example of Fig. 5, the extension arm portions 63 are three and equally spaced.
  • the extension arm portion 63 is for connection with the input portion 3.
  • the outer end of the extension arm portion 63 may extend to and be fixed to the inner peripheral surface of the input portion 3, such as an annular final drive driven gear.
  • Each set of correspondingly engaged first planet gears 12 and second planet gears 22 are located between adjacent two extension arm portions 63, as in the example of Figure 5, the extension arm portions 63 are three, the three extensions The arm portion 63 defines three receiving chambers (each adjacent two extending arm portions 63 and an inner peripheral surface of the input end gear 3 define a receiving cavity), and each of the receiving chambers may be provided with a pair of first engaged The planet gear 12 and the second planet gear 22, such that the overall structure of the differential 100 is more compact, while making the center of gravity of the differential 100 closer to or at a central position, greatly improving the eccentricity of the differential 100 during high speed operation or The large eccentricity causes the differential 100 to be unstable in operation and low in life.
  • the first ring gear 13 may be coaxially coupled to the first output shaft 41
  • the second ring gear 23 may be coaxially coupled to the second output shaft 42.
  • the first carrier 11 is coaxially coupled to the first carrier shaft 111
  • the second carrier 21 is coaxially coupled to the second carrier shaft 211.
  • the first output shaft 41 can be It is a hollow shaft and can be coaxially sleeved on the first planet carrier shaft 111.
  • the second output shaft 42 can also be a hollow shaft and coaxially sleeved on the second planet carrier shaft 211.
  • the first carrier shaft 111 is coaxially fixed to the central body portion 64 of the first connecting bracket 61
  • the second carrier shaft 211 is coaxially fixed to the central body portion 64 of the second connecting bracket 62, but is not limited thereto.
  • first ring gear 13 and the second ring gear 23 have the same radial dimension, and each of the first ring gear 13 and the second ring gear 23 may be an integrally formed member.
  • the differential 100 according to an embodiment of the present invention has been described in detail above, and the remaining structure of the power drive system 1000 will be described in detail below.
  • the transmission 104 can include a plurality of input shafts 101, 102 and a power take-off shaft 103.
  • the power take off shaft 103 of the transmission 104 may be one, but is not limited thereto.
  • the power output shaft 103 is disposed in linkage with the input unit 3.
  • the power output shaft 103 is provided with an output gear 110, and the output gear 110 is meshed with the input unit 3.
  • the output gear 110 and the input portion 3 constitute a final drive, wherein the output gear 110 is configured as a main reducer drive gear, and the input portion 3 is correspondingly configured as a main reducer. Driven gear.
  • the structure of the power drive system 1000 is made more compact, and the differential 100 is built inside the driven gear of the final drive, so that the differential 100 can better utilize the internal space, facilitating the arrangement of the entire power drive system 1000.
  • One of the plurality of input shafts 101, 102 is arranged to be selectively engageable with the power take-off shaft 103.
  • one of the input shafts such as the first input shaft 101 (the second input shaft 102 in FIG. 11) can be linked with the power output shaft 103, and one of the input shafts is the first input shaft.
  • the 101 can also be disconnected from the power output shaft 103.
  • the remaining input shafts are all arranged in conjunction with the power output shaft 103. That is, when the input shafts are operated, the power output shaft 103 also follows the action, or the power output shaft 103 operates, and the input shafts also operate.
  • the first motor generator 401 is disposed in linkage with the one input shaft, such as the first input shaft 101, that is, the input shaft that is linked with the first motor generator 401 is selectively linked with the power output shaft 103.
  • Input shaft In some embodiments, the power take-off shaft 103 is provided with an idler driven gear 108, and the idler driven gear 108 is coupled with one of the input shafts.
  • the synchronizer 109 is configured to synchronize the power output shaft 103 with the air.
  • the set of driven gears 108 is configured to synchronize the power output shaft 103 with the air.
  • the synchronizer 109 when the synchronizer 109 is in the engaged state, the synchronizer 109 synchronizes the idler driven gear 108 and the power output shaft 103 so that the power from the first motor generator 401 can be engaged by the synchronizer 109.
  • the power output shaft 103 is output to the differential 100, and when the synchronizer 109 is in the off state, the first motor generator 401 is equivalent to being disconnected from the power output shaft 103.
  • the synchronizer 109 functions as a power switch of the first motor generator 401, and can control the output and disconnection of the power of the first motor generator 401.
  • the synchronizer 109 is disposed on the power take-off shaft 103 and is configured to engage the idler driven gear 108. Thereby, the structure is simple and easy to implement.
  • the power output shaft 103 is fixedly provided with a fixed driven gear 107, and the fixed driven gear 107 is interlocked with the remaining input shafts, that is, the input shaft 101 in the above embodiment of FIG. 10 or the input shaft 102 in the embodiment of FIG. 11 is removed. .
  • the power output shaft 103 is fixedly fixedly provided with a fixed driven gear 107
  • the empty sleeve has an idler driven gear 108
  • the input shaft is correspondingly fixedly provided with a fixed driving gear.
  • 105, 106, the idler driven gear 108 and the fixed driven gear 107 are respectively meshed with the corresponding fixed driving gears.
  • the total number of idler driven gears 108 and fixed driven gears 107 is the same as the number of fixed drive gears.
  • the number of the idler driven gear 108 and the fixed driven gear 107 is one.
  • the number of the fixed driving gears is two, the idler driven gear 108 and a fixed driving gear. Engagement constitutes a pair of gear pairs, and the fixed driven gear 107 meshes with another fixed drive gear to form another pair of gear pairs.
  • the transmission speed ratios of the two pairs of gear pairs are different, so the transmission 104 in this embodiment has two transmission gears of different speed ratios, so that the structure of the power drive system 1000 is relatively simple and compact, and can also satisfy the vehicle. The requirement of the normal driving speed ratio.
  • the plurality of input shafts include a first input shaft 101 and a second input shaft 102
  • the first input shaft 101 can be a solid shaft
  • the second input shaft 102 can be a hollow shaft
  • the sleeve 102 is disposed on the first input shaft 101.
  • the second input shaft 102 is coaxially sleeved on the first input shaft 101.
  • the axial length of the first input shaft 101 is greater than the axial length of the second input shaft 102.
  • One end of an input shaft 101 such as a right end, may extend from the interior of the second input shaft 102.
  • Each input shaft may be fixedly provided with only one fixed driving gear, that is, the fixed driving gear includes a first fixed driving gear 106 and a second fixed driving gear 105, and the first fixed driving gear 106 is fixedly disposed on the first input shaft 101.
  • the second fixed driving gear 105 is fixedly disposed on the second input shaft 102.
  • the idler driven gear 108 meshes with the first fixed drive gear 106
  • the fixed driven gear 107 meshes with the second fixed drive gear 105.
  • the first motor generator 401 is interlocked with the first input shaft 101, for example, the first motor generator 401 is interlocked with the first fixed driving gear 106 through a gear structure.
  • the first motor generator 401 can be driven by the gear 402 and the gear 403 and the first fixed driving gear 106.
  • the gear ratio required by the first motor generator 401 can be obtained by appropriately designing the number of teeth of the gear.
  • the idler driven gear 108 meshes with the second fixed drive gear 105
  • the fixed driven gear 107 meshes with the first fixed drive gear 106.
  • the first motor generator 401 is interlocked with the second input shaft 102, for example, the first motor generator 401 is coupled to the second fixed driving gear 105 through a gear structure.
  • the first motor generator 401 can be driven by the gear 402, the gear 403, the gear 404, the gear 405, and the second fixed driving gear 105.
  • the gear 404 and the gear 405 can be fixed on the same shaft 406, and the gear is properly designed. The number of teeth can obtain the required transmission ratio of the first motor generator 401.
  • the powertrain system 1000 can also include an engine 301 that is configured to selectively engage at least one of the plurality of input shafts.
  • the input shaft is two and a dual clutch 204 is disposed between the engine 301 and the two input shafts.
  • the dual clutch 204 includes a first engagement portion 201, a second engagement portion 202, and a third engagement portion 203, wherein the first engagement portion 201 and the second engagement portion 202 can be two driven discs of the dual clutch 204, the third engagement
  • the portion 203 can be a housing of the dual clutch 204, at least one of the two driven disks can selectively engage the housing, that is, at least one of the first engagement portion 201 and the second engagement portion 202 can be selectively
  • the third joint portion 203 is joined to the ground.
  • the two driven disks can also be completely disconnected from the housing, that is, both the first engaging portion 201 and the second engaging portion 202 are in an open state with the third engaging portion 203.
  • the engine 301 is coupled to a third engagement portion 203, the first input shaft 101 is coupled to the first engagement portion 201, and the second input shaft 102 is coupled to the second engagement portion 202.
  • the power generated by the engine 301 can be selectively output to the first input shaft 101 and the second input shaft 102 through the dual clutch 204.
  • the second electric The generator 501 is interlocked with the first ring gear 13, and the third motor generator 503 is interlocked with the second ring gear 23.
  • the outer peripheral surface of the first ring gear 13 is provided with a first outer tooth 505, and the first outer tooth 505 may be integrally formed on the outer circumferential surface of the first ring gear 13.
  • the outer peripheral surface of the second ring gear 23 is provided with a second outer tooth 506, and the second outer tooth 506 is integrally formed on the outer peripheral surface of the second ring gear 23.
  • the second motor generator 501 is interlocked with the first external teeth 505, and the third motor generator 503 is interlocked with the second external teeth 506.
  • the motor shaft of the second motor generator 501 may be provided with a gear 502, the gear 502 meshes with the first external tooth 505, and the motor shaft of the third motor generator 503 may be provided with a gear 504, the gear 504 Engaged with the second outer teeth 506.
  • the manner in which the second motor generator 501 and the first ring gear 13 and the third motor generator 503 and the second ring gear 23 are interlocked is not limited to the manner described herein.
  • the second motor generator 501 and the third motor generator 503 are symmetrically distributed left and right with respect to the differential 100 such that the center of gravity of the power drive system 1000 can be centered or closer to the center position.
  • the input shaft includes a first input shaft 101, a second input shaft 102, and a third input shaft 1003.
  • the third input shaft 1003 can be a hollow shaft and sleeved on the second input shaft 102, the second input.
  • the shaft 102 can also be a hollow shaft and sleeved on the first input shaft 101, and the three input shafts can be coaxially arranged.
  • the engine 301 is coupled to the first input shaft 101, the second input shaft 102, and the third input shaft 1003 via a three clutch 205.
  • the three clutch 205 has a first driven disc 206, a second driven disc 207, a third driven disc 208, and a housing 209, and the housing 209 is selectively engageable with the first driven disc 206, the second At least one of the driven disc 207 and the third driven disc 208 is engaged, the first input shaft 101 is coupled to the first driven disc 206, and the second input shaft 102 is coupled to the second driven disc 207.
  • the third input shaft 1003 Connected to the third driven disk 208, the engine 301 is coupled to the housing 209.
  • the first driven disk 206, the second driven disk 207, and the third driven disk 208 are distributed in the axial direction.
  • the first driven disk 206, the second driven disk 207, and the third driven disk 208 are distributed in the radial direction.
  • the first engaging portion 201 is engaged with the third engaging portion 203
  • the second engaging portion 202 is disconnected from the third engaging portion 203
  • the synchronizer 109 is in an engaged state, at which time the power generated by the engine 301 passes through the first input shaft 101,
  • the power take-off shaft 103 is then output to the differential 100, and the differential 100 distributes the power to the drive wheels on both sides.
  • the second engaging portion 202 is engaged with the third engaging portion 203, the first engaging portion 201 is disconnected from the third engaging portion 203, and the synchronizer 109 is in an open state, at which time the power generated by the engine 301 passes through the second input shaft. 102.
  • the power output shaft 103 is output to the differential 100, and the differential 100 distributes the power to the drive wheels on both sides.
  • the dual clutch 204 is completely disconnected, the synchronizer 109 is in the engaged state, and the power generated by the first motor generator 401 is output to the differential 100 through the first input shaft 101 and the power output shaft 103, and the differential 100 is received by the differential 100.
  • Power division The drive wheels on both sides are assigned.
  • the first engaging portion 201 is engaged with the third engaging portion 203, the second engaging portion 202 is disconnected from the third engaging portion 203, and the synchronizer 109 is in an open state, at which time the power generated by the engine 301 passes through the first input shaft.
  • the 101 is output to the first motor generator 401, and drives the first motor generator 401 to generate electric power as an electric motor to realize a parking power generation function.
  • the main difference between the embodiment of FIG. 11 and the embodiment of FIG. 10 is that the first motor generator 401 is interlocked with the second input shaft 102, and the embodiment of FIG. 10 is that the first motor generator 401 is linked with the first input shaft 101. Some will not go into details.
  • the first ring gear 13 is coupled to the left front wheel 910a, such as the first ring gear 13 is coaxially coupled to the left front wheel 910a, and the second ring gear 23 is right.
  • the front wheel 910b is interlocked, for example, the second ring gear 23 is coaxially connected with the right front wheel 910b.
  • the fourth motor generator 901 is interlocked with the left rear wheel 910c through a gear structure.
  • the fourth motor generator 901 is interlocked with the left rear wheel 910c via the gears W1, W2, W3, and W4, and the gear W1 is coaxial with the fourth motor generator 901.
  • the gear W1 meshes with the gear W2
  • the gear W2 is coaxially coupled to the gear W3
  • the gear W3 meshes with the gear W4
  • the gear W4 can be fixedly disposed on the left half shaft 904
  • the left rear axle 910c is disposed on the left half shaft 904.
  • the fifth motor generator 902 is interlocked with the right rear wheel 910d through a gear structure, such as the fifth motor generator 902 is coupled with the right rear wheel 910d through the gears X1, X2, X3, X4, the gear X1 and the fifth motor generator
  • the 902 is coaxially connected, the gear X1 is meshed with the gear X2, the gear X2 is coaxially connected with the gear X3, the gear X3 is meshed with the gear X4, the gear X4 is fixedly disposed on the right half shaft 905, and the right rear wheel is provided on the right half shaft 905. 910d.
  • the anti-skid synchronizer 903 is provided for the synchronizing gear W4 and the gear X4, for example, the anti-skid synchronizer 903 is disposed on the gear W4 and is used to engage the gear X4.
  • the anti-skid synchronizer 903 is provided for the synchronizing gear W1 and the gear X1, for example, the anti-skid synchronizer 903 is disposed on the gear W1 and is used to engage the gear X1.
  • the anti-skid synchronizer 903 is provided for the synchronizing gear W2 and the gear X2, for example, the anti-skid synchronizer 903 is disposed on the gear W2 and is used to engage the gear X2.
  • the anti-skid synchronizer 903 is configured to synchronize the left and right axles 904, 905, such as the anti-skid synchronizer 903, on the left axle 904 and for engaging the right axle 905, this embodiment
  • the fourth fourth motor generator 901 and the fifth motor generator 902 are both wheel motors.
  • the anti-skid synchronizer 903 is arranged to selectively synchronize the left rear wheel 910c and the right rear wheel 910d, in other words, when the anti-slip synchronizer 903 is in the engaged state, the left rear wheel 910c and the right rear wheel 910d will rotate synchronously, ie At the same speed and in the same direction, the left rear wheel 910c and the right rear wheel 910d do not rotate at a differential speed.
  • the fourth motor generator 901 can separately drive the left rear wheel 910c
  • the fifth motor generator 902 can separately drive the right rear wheel 910d, and the two rear wheels are independent of each other and do not interfere with each other. In order to achieve the differential rotation function of the wheel.
  • the combined technical solution may be a superposition of two or more technical solutions, a superposition of two or more technical features or a superposition of two or more technical solutions and technical features, thereby enabling The technical solutions and/or technical features interact and support each other functionally, and the combined solution has a superior technical effect.
  • a person skilled in the art can partially overlap the first planet gear 12 and the second planet gear 22 with a scheme in which the first planet carrier 11 and the second planet carrier 21 are plate-shaped structures, which can effectively reduce the differential.
  • the axial dimension of 100 makes the differential 100 smaller.
  • a person skilled in the art can combine the scheme in which the first planetary gear 12 and the second planetary gear 22 partially overlap with the solution in which the planetary gear and the carrier are housed in the installation space, so that the shaft of the differential 100 can be effectively reduced.
  • a person skilled in the art may adjust the revolving axis of the first planet gear 12 to the revolving axis of the second planet gear 22 and the revolving radius of the first planet gear 12 to be the same as the revolving radius of the second planet gear 22 .
  • the combination makes the structure of the differential 100 more compact, smaller in size, and easier to arrange.
  • the input portion 3 can better utilize the hollow space inside the main reduction driven gear, thereby achieving better space utilization, greatly facilitating the overall vehicle layout of the differential assembly and the weight.
  • the input part 3 can configure the input part 3 as a combination of the annular input end gear and the input end gear 3 to surround and cover the gap, so that on the one hand, the structure of the differential 100 is relatively compact, and the gear 3 is input through the input end.
  • the cover gap can also make the installation space defined by the shells of the two planetary gear trains relatively more closed, fully protecting the components inside the installation space and improving the service life thereof.
  • the differential 100 can effectively save space and reduce weight.
  • the planetary gear differential 100 is compared to a conventional bevel gear differential.
  • the weight can be reduced by about 30%, while the axial dimension is reduced by about 70%, which not only reduces the friction of the bearing, but also achieves the torque of the left and right wheels.
  • the distribution makes the load distribution of the differential 100 more reasonable, the differential 100 is more rigid, and the transmission efficiency is also improved due to the use of the spur gear, for example, the efficiency of the conventional bevel gear transmission of the 6-level precision and the 7-level precision is about 0.97 ⁇ 0.98, and the efficiency of spur gear transmission with 6-level accuracy and 7-level precision is about 0.98-0.99.
  • the cylindrical gear reduces the working noise of the differential 100, reduces the heat generation, and greatly improves the differential speed.
  • the differential 100 according to the embodiment of the present invention has many advantages such as light weight, small size, low cost, high transmission efficiency, low noise, low heat generation, and high life.
  • the differential 100 according to the embodiment of the present invention can omit the sun gear, the elimination of the sun gear can have the following advantages:
  • the sun gear should be canceled instead of using the ring gear to achieve the differential speed, because the number of teeth of the ring gear can be set more than the sun gear, and the pitch circle is larger (the pitch circle refers to the node at the gear meshing transmission).
  • a pair of tangent circles are tangential, so that the load and the withstand torque can be distributed more evenly, which is advantageous for the improvement of the life of the differential 100.
  • there is no sun wheel and the lubrication and cooling of the differential 100 can be better realized. That is to say, since the sun gear is eliminated, a cavity can be formed inside the ring gear, and the ring gear meshes with the planetary gear to belong to the inner mesh.
  • the lubricating oil can be stored in the ring gear, and the cooling and lubrication effect is greatly improved.
  • the sun gear is eliminated, the components are reduced, the quality and cost of the differential 100 are reduced, and the differential 100 is further reduced in size and weight.
  • the power drive system 1000 having the differential 100 has obvious advantages mainly in space and in the drive mode.
  • the power drive system 1000 is particularly suitable for In a new energy vehicle, since the powertrain of the new energy vehicle is generally disposed in the engine compartment, the powertrain not only has a transmission, an engine, but also at least one electric motor, and adopts a compact according to an embodiment of the present invention due to limited space in the engine compartment.
  • the differential 100 is capable of gaining an advantage in space and is more convenient to arrange.
  • the axial dimension of the differential 100 according to the embodiment of the present invention is greatly reduced, the axial space is better arranged, and the differential 100 has two ring gears as power.
  • the output can better achieve a power connection to the two motors (as described above for connecting the motor through the external gear of the ring gear), which is difficult to achieve on conventional conical differentials.
  • the vehicle 10000 includes the power drive system 1000 in the above embodiment, and the power drive system 1000 can be used for a front drive, and of course, for a rear drive.
  • the present invention is not particularly limited thereto. It should be understood that other configurations of the vehicle 10000, such as the brake system, the travel system, the steering system, and the like, according to embodiments of the present invention are known in the art and are well known to those skilled in the art, and therefore will not be described herein. .

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Abstract

Disclosed is a power driving system, comprising a differential (100). The differential (100) comprises a first planet carrier (11), a first planet wheel (12), a first ring gear (13), a second planet carrier (21), a second planet wheel (22) and a second ring gear (23), wherein the first and the second planet wheels are respectively connected to the first and the second planet carriers, the first and the second planet wheels are respectively engaged with the first and the second ring gears, and the second planet wheel (22) is also engaged with the first planet wheel (12). Further comprised is an input part (3), the input part (3) and the first and the second planet carriers being coaxially linked; a power output shaft (103), the power output shaft (103) being linked with the input part (3); a plurality of output shafts (101, 102), one of the plurality of input shafts (101, 102) being optionally linked with the power output shaft (103), and the remaining input shafts (101, 102) being linked with the power output shaft (103); and a first motor generator (401), the first motor generator (401) being linked with one of the plurality of input shafts (101, 102). Further disclosed is a vehicle having the above-mentioned power driving system. The above-mentioned differential uses the planetary differential principle to realize a differential function, and the structure thereof is compact and simple.

Description

动力驱动***及具有其的车辆Power drive system and vehicle having the same 技术领域Technical field
本发明涉及一种动力驱动***以及具有该动力驱动***的车辆。The present invention relates to a power drive system and a vehicle having the same.
背景技术Background technique
发明人所了解的一种差速器技术中，差速器包括主减速器的从动齿轮(主减从动齿轮)、行星齿轮、中心轮等，行星齿轮通过方轴、轴套安装在从动齿轮的副板上，且与中心轮啮合，用转动副和平面移动副实现其转动和移动功能，中心轮通过角向定位销和圆柱副或花键与左右两半轴连接，达到输出转矩的目的。这种差速器取消了原有的差速器左右壳体、行星齿轮轴等构件，改用方轴和轴套直接将行星轮安装在主减速器的从动齿轮的副板上，有效地减少了差速器的零件数目，简化了结构、减轻了重量。In a differential technology known to the inventors, the differential includes a driven gear of the final drive (main reduction drive gear), a planetary gear, a center wheel, etc., and the planetary gear is mounted on the stator through the square shaft and the sleeve. The sub-plate of the moving gear is meshed with the center wheel, and the rotating and moving functions are realized by the rotating pair and the plane moving pair. The center wheel is connected to the left and right shafts through the angular positioning pin and the cylindrical pair or spline to achieve the output rotation. The purpose of the moment. The differential cancels the original left and right housings of the differential, the planetary gear shaft and the like, and the square shaft and the sleeve are directly used to mount the planetary gears on the auxiliary plate of the driven gear of the final drive, effectively The number of parts of the differential is reduced, the structure is simplified, and the weight is reduced.
但是，这种差速器利用了对称式锥齿轮结构实现轮间差速，只是针对传统的对称式锥齿轮差速器的部分创新，并不能真正解决这种差速器结构轴向尺寸过大、壳体及锥齿轮质量大以及可靠性相对偏差的缺点。However, this differential utilizes a symmetrical bevel gear structure to achieve the inter-wheel differential, but only a partial innovation for the conventional symmetrical bevel gear differential does not really solve the excessive axial size of the differential structure. The disadvantages of large quality of the housing and bevel gears and relative deviation of reliability.
发明内容Summary of the invention
本发明旨在至少在一定程度上解决现有技术中的上述技术问题之一。The present invention aims to solve at least one of the above technical problems in the prior art to some extent.
为此，本发明提出了一种动力驱动***，该动力驱动***的差速器利用行星差速原理实现差速功能，结构紧凑、简单。To this end, the present invention proposes a power drive system in which the differential of the power drive system utilizes the principle of planetary differential to achieve a differential function, which is compact and simple.
本发明还提出了一种具有该动力传动***的车辆。The invention also proposes a vehicle having the power transmission system.
根据本发明实施例的动力驱动***，包括：差速器，所述差速器包括：第一行星架、第一行星轮和第一齿圈，所述第一行星轮与所述第一行星架连接，所述第一行星轮与所述第一齿圈啮合；第二行星架、第二行星轮和第二齿圈，所述第二行星轮与所述第二行星架连接，所述第二行星轮与所述第二齿圈啮合且所述第二行星轮还与所述第一行星轮啮合，其中，所述第一齿圈和所述第二齿圈构成所述差速器的两个动力输出端；输入部，所述输入部、所述第一行星架和所述第二行星架同轴布置且所述输入部与所述第一行星架和所述第二行星架联动；动力输出轴，所述动力输出轴设置成与所述输入部联动；多个输入轴，所述多个输入轴中的一个输入轴设置成可选择性地与所述动力输出轴联动，所述多个输入轴中的其余输入轴设置成与所述动力输出轴联动；第一电动发电机，所述第一电动发电机 设置成与所述多个输入轴中的所述一个输入轴联动。A power drive system according to an embodiment of the present invention includes: a differential including: a first planet carrier, a first planet gear, and a first ring gear, the first planet gear and the first planet a first planetary gear that meshes with the first ring gear; a second planet carrier, a second planet gear, and a second ring gear, the second planet gear being coupled to the second planet carrier, a second planet gear meshes with the second ring gear and the second planet gear also meshes with the first planet gear, wherein the first ring gear and the second ring gear constitute the differential gear Two power outputs; an input portion, the input portion, the first planet carrier and the second planet carrier are coaxially arranged and the input portion is coupled to the first planet carrier and the second planet carrier a power output shaft, the power output shaft is disposed in linkage with the input portion; and a plurality of input shafts, one of the plurality of input shafts is disposed to be selectively coupled to the power output shaft, The remaining ones of the plurality of input shafts are arranged to be linked with the power output shaft; Motor generator, the first motor-generator Arranging to interlock with the one of the plurality of input shafts.
根据本发明实施例的动力驱动***的差速器利用行星差速原理实现差速功能，结构紧凑、简单。The differential of the power drive system according to the embodiment of the present invention realizes the differential function by using the principle of planetary differential, and is compact and simple.
根据本发明实施例的动力驱动***，还可以具有如下附加技术特征：The power drive system according to the embodiment of the present invention may further have the following additional technical features:
根据本发明的一些实施例，动力驱动***还包括：发动机，所述发动机设置成可选择性地接合所述多个输入轴中的至少一个。According to some embodiments of the invention, the power drive system further includes an engine configured to selectively engage at least one of the plurality of input shafts.
根据本发明的一些实施例，所述动力输出轴上设置有输出齿轮，所述输出齿轮与所述输入部啮合传动。According to some embodiments of the present invention, an output gear is disposed on the power output shaft, and the output gear is meshed with the input portion.
根据本发明的一些实施例，所述动力输出轴上空套设置有空套从动齿轮，所述空套从动齿轮与所述多个输入轴中的所述一个输入轴联动，所述动力驱动***还包括同步器，所述同步器设置成用于同步所述动力输出轴与所述空套从动齿轮。According to some embodiments of the present invention, the power take-off shaft is provided with an idler driven gear, and the idler driven gear is linked with the one of the plurality of input shafts, the power drive The system also includes a synchronizer configured to synchronize the power take off shaft with the idler driven gear.
根据本发明的一些实施例，所述同步器设置在所述动力输出轴上且用于接合所述空套从动齿轮。According to some embodiments of the invention, the synchronizer is disposed on the power take-off shaft and is configured to engage the idler driven gear.
根据本发明的一些实施例，所述动力输出轴上固定设置有固定从动齿轮，所述固定从动齿轮与所述多个输入轴中的所述其余输入轴联动。According to some embodiments of the present invention, the power output shaft is fixedly provided with a fixed driven gear, and the fixed driven gear is interlocked with the remaining ones of the plurality of input shafts.
根据本发明的一些实施例，所述动力输出轴上空套设置有空套从动齿轮以及固定设置有固定从动齿轮，所述动力驱动***还包括同步器：所述同步器设置成用于同步所述动力输出轴与所述空套从动齿轮；每个输入轴上固定设置有固定主动齿轮，所述空套从动齿轮和所述固定从动齿轮分别与对应的固定主动齿轮啮合。According to some embodiments of the present invention, the power take-off shaft is provided with an idler driven gear and is fixedly provided with a fixed driven gear, and the power drive system further includes a synchronizer: the synchronizer is set for synchronization The power output shaft and the idler driven gear; each input shaft is fixedly provided with a fixed driving gear, and the empty sleeve driven gear and the fixed driven gear respectively mesh with corresponding fixed driving gears.
根据本发明的一些实施例，所述第一行星轮与所述第二行星轮在轴向上部分重叠。According to some embodiments of the invention, the first planet gear and the second planet gear partially overlap in the axial direction.
根据本发明的一些实施例，所述第一行星轮包括：第一齿部和第二齿部，所述第二行星轮包括：第三齿部和第四齿部，所述第一齿部与所述第一齿圈啮合，所述第二齿部与所述第三齿部在所述轴向上重叠且啮合配合，所述第四齿部与所述第二齿圈啮合。According to some embodiments of the present invention, the first planet gear includes: a first tooth portion and a second tooth portion, the second planet gear includes: a third tooth portion and a fourth tooth portion, the first tooth portion Engaging with the first ring gear, the second tooth portion and the third tooth portion overlap and mesh with each other in the axial direction, and the fourth tooth portion meshes with the second ring gear.
根据本发明的一些实施例，所述第一齿圈和所述第二齿圈为对称结构，所述第一齿圈和所述第二齿圈中的每一个均包括：主体平板部和设置在所述主体平板部的外周沿的环形侧壁部，所述环形侧壁部的内壁面上设置有多个齿，所述主体平板部与所述环形侧壁部之间限定出空腔，所述第一齿圈的空腔和所述第二齿圈的空腔朝向彼此以构成安装空间，所述第一行星架和所述第一行星轮以及所述第二行星架和所述第二行星轮收纳在所述安装空间内。According to some embodiments of the present invention, the first ring gear and the second ring gear are symmetrical structures, and each of the first ring gear and the second ring gear includes: a body flat portion and a setting a plurality of teeth are disposed on an inner wall surface of the outer peripheral edge of the main body flat portion, and a plurality of teeth are disposed on an inner wall surface of the annular side wall portion, and a cavity is defined between the main body flat portion and the annular side wall portion. a cavity of the first ring gear and a cavity of the second ring gear face each other to constitute an installation space, the first planet carrier and the first planet gear and the second planet carrier and the first The two planetary wheels are housed in the installation space.
根据本发明的一些实施例，所述输入部构造为输入端齿轮，所述输入端齿轮构造为环形且套设在所述第一齿圈和所述第二齿圈外表面。According to some embodiments of the invention, the input portion is configured as an input end gear, the input end gear being configured to be annular and sleeved on the first ring gear and the second ring outer surface.
根据本发明的一些实施例，所述第一齿圈与所述第二齿圈之间设置有间隙，所述输入 端齿轮环绕并遮盖所述间隙。According to some embodiments of the present invention, a gap is provided between the first ring gear and the second ring gear, the input The end gear surrounds and covers the gap.
根据本发明的一些实施例，动力驱动***还包括：中间连接结构，所述中间连接结构用于将所述第一行星架、所述第二行星架连接至所述输入部，所述中间连接结构包括：第一连接支架和第二连接支架，所述第一连接支架用于连接所述第一行星架与所述输入部，所述第二连接支架用于连接所述第二行星架与所述输入部，其中所述第一连接支架和所述第二连接支架中的每一个均包括：中心本体部和多个延伸臂部，所述多个延伸臂部设置在所述中心本体部的外周面上，所述多个延伸臂部以所述中心本体部为中心且呈放射状分布，其中所述多个延伸臂部用于与所述输入部相连。According to some embodiments of the present invention, the power drive system further includes: an intermediate connection structure for connecting the first planet carrier and the second planet carrier to the input portion, the intermediate connection The structure includes: a first connecting bracket for connecting the first planet carrier and the input portion, and a second connecting bracket for connecting the second planet carrier and The input portion, wherein each of the first connection bracket and the second connection bracket includes: a center body portion and a plurality of extension arm portions, the plurality of extension arm portions being disposed at the center body portion On the outer peripheral surface, the plurality of extending arm portions are radially distributed around the central body portion, wherein the plurality of extending arm portions are for connecting with the input portion.
根据本发明的一些实施例，每个第一行星轮配置有第一行星轮轴，所述第一行星轮轴的两个端部分别与所述第一行星架和所述第二行星架相连，每个第二行星轮配置有第二行星轮轴，所述第二行星轮轴的两个端部分别与所述第一行星架和所述第二行星架相连。According to some embodiments of the present invention, each of the first planet gears is configured with a first planetary axle, and two ends of the first planetary axle are respectively coupled to the first planet carrier and the second planet carrier, each The second planet gears are provided with a second planetary axle, and the two ends of the second planetary axle are connected to the first planet carrier and the second planet carrier, respectively.
根据本发明的一些实施例，所述第一行星轮的公转半径与所述第二行星轮的公转半径相同。According to some embodiments of the invention, the revolution radius of the first planet gear is the same as the revolution radius of the second planet gear.
根据本发明的一些实施例，动力驱动***还包括：第二电动发电机和第三电动发电机，所述第二电动发电机与所述第一齿圈联动，所述第三电动发电机与所述第二齿圈联动。According to some embodiments of the present invention, the power drive system further includes: a second motor generator and a third motor generator, the second motor generator is coupled with the first ring gear, and the third motor generator The second ring gear is linked.
根据本发明的一些实施例，所述第一齿圈的外周面上设置有第一外齿，所述第二齿圈的外周面上设置有第二外齿，所述第二电动发电机与所述第一外齿联动，所述第三电动发电机与所述第二外齿联动。According to some embodiments of the present invention, the first outer ring surface of the first ring gear is provided with a first outer tooth, and the outer peripheral surface of the second ring gear is provided with a second outer tooth, the second motor generator and The first external teeth are linked, and the third motor generator is linked with the second external teeth.
根据本发明的一些实施例，所述多个输入轴包括第一输入轴、第二输入轴和第三输入轴，所述第三输入轴套设在所述第二输入轴上，所述第二输入轴套设在所述第一输入轴上，所述发动机与所述第一输入轴、所述第二输入轴和所述第三输入轴之间通过三离合器相连。According to some embodiments of the present invention, the plurality of input shafts include a first input shaft, a second input shaft, and a third input shaft, and the third input shaft is sleeved on the second input shaft, the Two input shafts are sleeved on the first input shaft, and the engine is connected to the first input shaft, the second input shaft and the third input shaft via a three-clutch.
根据本发明的一些实施例，所述第一齿圈与左前轮联动，所述第二齿圈与右前轮联动；所述动力驱动***还包括：第四电动发电机和第五电动发电机，所述第四电动发电机与左后轮联动，所述第五电动发电机与右后轮联动；以及防滑同步器，所述防滑同步器设置成可选择性地同步所述左后轮和右后轮，从而使得所述左后轮和所述右后轮同步旋转。According to some embodiments of the present invention, the first ring gear is linked with the left front wheel, and the second ring gear is linked with the right front wheel; the power drive system further includes: a fourth motor generator and a fifth motor generator The fourth motor generator is associated with the left rear wheel, the fifth motor generator is coupled with the right rear wheel, and the anti-skid synchronizer is configured to selectively synchronize the left rear wheel And a right rear wheel such that the left rear wheel and the right rear wheel rotate in synchronization.
根据本发明实施例的车辆，包括根据本发明上述实施例的动力驱动***。A vehicle according to an embodiment of the present invention includes a power drive system according to the above embodiment of the present invention.
附图说明DRAWINGS
图1是根据本发明实施例的差速器的一个视角的***图；1 is an exploded view of a viewing angle of a differential according to an embodiment of the present invention;
图2是根据本发明实施例的差速器的另一视角的***图；2 is an exploded view of another perspective of a differential according to an embodiment of the present invention;
图3是根据本发明实施例的差速器的立体图；3 is a perspective view of a differential according to an embodiment of the present invention;
图4是根据本发明实施例的差速器的平面原理简图； 4 is a schematic diagram of a planar principle of a differential according to an embodiment of the present invention;
图5是根据本发明实施例的差速器的立体图，其中未示出第二行星架和第二齿圈；Figure 5 is a perspective view of a differential in which a second planet carrier and a second ring gear are not shown, in accordance with an embodiment of the present invention;
图6是第一行星轮和第二行星轮的啮合示意图；Figure 6 is a schematic view showing the meshing of the first planetary gear and the second planetary gear;
图7是第一行星轮和第二行星轮的啮合原理简图；Figure 7 is a schematic diagram of the meshing principle of the first planetary gear and the second planetary gear;
图8是根据本发明实施例的第一齿圈或第二齿圈的立体图；Figure 8 is a perspective view of a first ring gear or a second ring gear in accordance with an embodiment of the present invention;
图9是根据本发明另一个实施例的第一齿圈或第二齿圈的立体图；Figure 9 is a perspective view of a first ring gear or a second ring gear in accordance with another embodiment of the present invention;
图10是根据本发明一个实施例的动力驱动***的示意图；Figure 10 is a schematic illustration of a power drive system in accordance with one embodiment of the present invention;
图11是根据本发明另一个实施例的动力驱动***的示意图；Figure 11 is a schematic illustration of a power drive system in accordance with another embodiment of the present invention;
图12是根据本发明再一个实施例的动力驱动***的示意图；Figure 12 is a schematic illustration of a power drive system in accordance with still another embodiment of the present invention;
图13是根据本发明再一个实施例的动力驱动***的示意图；Figure 13 is a schematic illustration of a power drive system in accordance with still another embodiment of the present invention;
图14是根据本发明再一个实施例的动力驱动***的示意图；Figure 14 is a schematic illustration of a power drive system in accordance with still another embodiment of the present invention;
图15是根据本发明再一个实施例的动力驱动***的示意图；Figure 15 is a schematic illustration of a power drive system in accordance with still another embodiment of the present invention;
图16是根据本发明再一个实施例的动力驱动***的示意图；Figure 16 is a schematic illustration of a power drive system in accordance with still another embodiment of the present invention;
图17是根据本发明再一个实施例的动力驱动***的示意图；Figure 17 is a schematic illustration of a power drive system in accordance with still another embodiment of the present invention;
图18是根据本发明再一个实施例的动力驱动***的示意图；Figure 18 is a schematic illustration of a power drive system in accordance with still another embodiment of the present invention;
图19是根据本发明再一个实施例的动力驱动***的示意图；Figure 19 is a schematic illustration of a power drive system in accordance with still another embodiment of the present invention;
图20是根据本发明实施例的车辆的示意图。Figure 20 is a schematic illustration of a vehicle in accordance with an embodiment of the present invention.
具体实施方式detailed description
下面详细描述本发明的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，旨在用于解释本发明，而不能理解为对本发明的限制。The embodiments of the present invention are described in detail below, and the examples of the embodiments are illustrated in the drawings, wherein the same or similar reference numerals are used to refer to the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the drawings are intended to be illustrative of the invention and are not to be construed as limiting.
在本发明的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”、“顺时针”、“逆时针”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientation or position of indications such as "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. The relationship is based on the orientation or positional relationship shown in the drawings, and is merely for the convenience of the description of the invention and the simplification of the description, and does not indicate or imply that the device or component referred to has a specific orientation, is constructed and operated in a specific orientation, and thus It is not to be understood as limiting the invention.
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本发明的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。Moreover, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" and "second" may include one or more of the features either explicitly or implicitly. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless specifically defined otherwise.
在本发明中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是 机械连接，也可以是电连接或可以互相通讯；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。In the present invention, the terms "installation", "connected", "connected", "fixed" and the like shall be understood broadly, and may be either a fixed connection or a detachable connection, unless explicitly stated and defined otherwise. Or in one; can be Mechanical connections can also be electrical connections or can communicate with each other; they can be directly connected or indirectly connected via an intermediate medium, which can be the internal communication of two components or the interaction of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.
在本发明中，除非另有明确的规定和限定，第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。In the present invention, the first feature "on" or "under" the second feature may include direct contact of the first and second features, and may also include first and second features, unless otherwise specifically defined and defined. It is not in direct contact but through additional features between them. Moreover, the first feature "above", "above" and "above" the second feature includes the first feature directly above and above the second feature, or merely indicating that the first feature level is higher than the second feature. The first feature "below", "below" and "below" the second feature includes the first feature directly below and below the second feature, or merely the first feature level being less than the second feature.
下面将参照附图详细描述根据本发明实施例的动力驱动***1000，该动力驱动***1000可应用于车辆中。A power drive system 1000 according to an embodiment of the present invention, which can be applied to a vehicle, will be described in detail below with reference to the accompanying drawings.
如图10-图15所示，根据本发明一些实施例的动力驱动***1000主要包括差速器100、变速器104和第一电动发电机401，变速器104连接在差速器100与第一电动发电机401之间。As shown in FIGS. 10-15, a power drive system 1000 according to some embodiments of the present invention mainly includes a differential 100, a transmission 104, and a first motor generator 401. The transmission 104 is coupled to the differential 100 and the first motor generator. Between machines 401.
下面首先根据图示实施例对差速器100的具体结构进行详细描述，对于动力驱动***1000的其它构造将在详细介绍差速器100构造之后描述。The specific structure of the differential 100 will first be described in detail below in accordance with the illustrated embodiment, and other configurations for the power drive system 1000 will be described after the construction of the differential 100 is described in detail.
下面结合图1-图9对根据本发明实施例的差速器100进行详细描述，该差速器100可以用于轮间差速或轴间差速，以用于轮间差速为例，该差速器100能够使左右驱动车轮在车辆转弯行驶或在不平路面行驶时以不同的角速度滚动，以保证两侧驱动轮与地面间作纯滚动运动。A differential 100 according to an embodiment of the present invention will be described in detail below with reference to FIGS. 1-9. The differential 100 can be used for inter-wheel differential or inter-axle differential for the example of inter-wheel differential. The differential 100 enables the left and right drive wheels to roll at different angular velocities when the vehicle is turning or traveling on uneven roads to ensure a pure rolling motion between the drive wheels on both sides and the ground.
如图1所示，根据本发明一些实施例的差速器100可以包括第一行星架11、第一行星轮12和第一齿圈13以及包括第二行星架21、第二行星轮22和第二齿圈23。As shown in FIG. 1, a differential 100 according to some embodiments of the present invention may include a first planet carrier 11, a first planet gear 12 and a first ring gear 13, and a second planet carrier 21, a second planet gear 22, and Second ring gear 23.
结合图1和图2的实施例，第一行星架11和第二行星架21均可以构造为圆形的板状结构，这样可以在一定程度上减少差速器100的轴向尺寸。在一些实施例中，第一行星架11和第二行星架21可为分体式结构，即第一行星架11与第二行星架21相互分离，由于单独小部件成型相对容易，因此将第一行星架11和第二行星架21分别单独加工可以简化制造工艺、提高加工精度。In conjunction with the embodiment of Figures 1 and 2, both the first planet carrier 11 and the second planet carrier 21 can be constructed as a circular plate-like structure, which can reduce the axial dimension of the differential 100 to some extent. In some embodiments, the first planet carrier 11 and the second planet carrier 21 may be of a split structure, that is, the first planet carrier 11 and the second planet carrier 21 are separated from each other, and since the individual small parts are relatively easy to form, the first will be The separate processing of the carrier 11 and the second carrier 21 can simplify the manufacturing process and improve the machining accuracy.
如图1-图2且结合图6所示，第一行星轮12设置在第一行星架11上，例如，每个第一行星轮12配置有一个第一行星轮轴14，第一行星轮轴14的两个端部分别可转动地支承在第一行星架11和第二行星架21上，如第一行星轮轴14的两个端部可通过轴承而可转动地支承在第一行星架11和第二行星架21上彼此对应的轴孔内，此时第一行星轮12可固定于对应的第一行星轮轴14上。当然，第一行星轮轴14的两个端部与第一行星架11和第二 行星架21也可以是固定连接的，例如第一行星轮轴14的两个端部分别与第一行星架11和第二行星架21上彼此对应的轴孔焊接固定，此时第一行星轮12可转动地套设在对应的第一行星轮轴14上，例如第一行星轮12可通过轴承而可转动地套装在第一行星轮轴14上。由此，通过第一行星轮轴14可以实现连接第一行星架11和第二行星架21的目的，从而使得第一行星架11和第二行星架21保持同速、同向运动(即第一行星架11和第二行星架21联动)，而且采用这种连接方式，第一行星架11和第二行星架21可以很好地对第一行星轮轴14进行支承/固定，防止第一行星轮轴14与单个行星架脱离连接而导致差速器100失效。参见图1和图2所示，第一行星轮12与第一齿圈13啮合，具体可为内啮合形式，即第一行星轮12位于第一齿圈13的内侧并与第一齿圈13上的齿啮合。第一行星轮12可为多个，并且沿周向等角间距分布在第一齿圈13内侧，例如，第一行星轮12可为三个，并且任意相邻的两个第一行星轮12之间间隔角度为120°。As shown in FIGS. 1-2 and in conjunction with FIG. 6, the first planet gears 12 are disposed on the first planet carrier 11, for example, each of the first planet gears 12 is provided with a first planet gear axle 14, a first planet gear axle 14 The two ends are rotatably supported on the first planet carrier 11 and the second planet carrier 21, respectively, such that both ends of the first planet axle 14 are rotatably supported by the first planet carrier 11 by bearings The second planet carrier 21 is in a corresponding axial bore, and the first planet gear 12 can be fixed to the corresponding first planet axle 14. Of course, the two ends of the first planetary axle 14 and the first planet carrier 11 and the second The carrier 21 can also be fixedly connected. For example, the two ends of the first planetary axle 14 are respectively welded and fixed to the shaft holes corresponding to each other on the first carrier 11 and the second carrier 21, and the first planetary gear 12 is at this time. Rotatablely sleeved on the corresponding first planet axle 14, for example, the first planet gear 12 is rotatably fitted over the first planet axle 14 by bearings. Thereby, the purpose of connecting the first planet carrier 11 and the second planet carrier 21 can be achieved by the first planetary axle 14 such that the first planet carrier 11 and the second planet carrier 21 maintain the same speed and the same direction (ie, the first The carrier 11 and the second carrier 21 are interlocked, and with this connection, the first carrier 11 and the second carrier 21 can support/fix the first planetary axle 14 well, preventing the first planetary axle The 14 is disconnected from the single planet carrier causing the differential 100 to fail. Referring to FIGS. 1 and 2, the first planet gear 12 meshes with the first ring gear 13, specifically in the form of internal engagement, that is, the first planet gear 12 is located inside the first ring gear 13 and with the first ring gear 13 The upper teeth mesh. The first planet gears 12 may be plural and distributed inside the first ring gear 13 at circumferentially equiangular intervals, for example, the first planet gears 12 may be three, and any two adjacent first planet wheels 12 The angle between the intervals is 120°.
如图1-图2且结合图6所示，第二行星轮22设置在第二行星架21上，例如，每个第二行星轮22配置有一个第二行星轮轴24，如第二行星轮轴24的两个端部可通过轴承而可转动地支承在第一行星架11和第二行星架21上彼此对应的轴孔内，此时第二行星轮22可固定于对应的第二行星轮轴24上。当然，第二行星轮轴24的两个端部与第一行星架11和第二行星架21也可以是固定连接的，例如第二行星轮轴24的两个端部分别与第一行星架11和第二行星架21上彼此对应的轴孔焊接固定，此时第二行星轮22可转动地套设在对应的第二行星轮轴24上，例如第二行星轮22可通过轴承而可转动地套装在第二行星轮轴24上。由此，通过第二行星轮轴24可以实现连接第一行星架11和第二行星架21的目的，从而使得第一行星架11和第二行星架21保持同速、同向运动，而且采用这种连接方式，第一行星架11和第二行星架21可以很好地对第二行星轮轴24进行支承/固定，防止第二行星轮轴24与单个行星架脱离连接而导致差速器100失效。As shown in FIGS. 1-2 and in conjunction with FIG. 6, the second planet gears 22 are disposed on the second planet carrier 21, for example, each of the second planet gears 22 is provided with a second planet gear axle 24, such as a second planet axle. The two ends of the two ends are rotatably supported by the bearings in the shaft holes corresponding to the first planet carrier 11 and the second planet carrier 21, and the second planet gears 22 can be fixed to the corresponding second planet gear axles. 24 on. Of course, the two ends of the second planetary axle 24 may also be fixedly coupled to the first planet carrier 11 and the second planet carrier 21, for example, the two ends of the second planetary axle 24 are respectively coupled to the first planet carrier 11 and The second planetary carrier 21 is welded and fixed to the corresponding axial hole. At this time, the second planetary gear 22 is rotatably sleeved on the corresponding second planetary axle 24, for example, the second planetary gear 22 is rotatably fitted through the bearing. On the second planetary axle 24. Thereby, the purpose of connecting the first planet carrier 11 and the second planet carrier 21 can be achieved by the second planetary gear shaft 24, so that the first planet carrier 11 and the second planet carrier 21 maintain the same speed and the same direction, and this is adopted. In a connection manner, the first planet carrier 11 and the second planet carrier 21 can support/fix the second planetary axle 24 well, preventing the second planetary axle 24 from being disconnected from the single planet carrier, thereby causing the differential 100 to fail.
此外，在本发明的另一些实施例中，为了保持第一行星架11和第二行星架21能够同速、同向运动，不仅可以采用上述通过第一行星轮轴14和/或第二行星轮轴24的方式实现，同时也可以通过中间连接结构6将第一行星架11和第二行星架21直接固定连接，或者同时采用行星轮轴与中间连接结构6连接第一行星架11和第二行星架21，而关于中间连接结构6的具体构造将在下面详细描述。In addition, in other embodiments of the present invention, in order to maintain the same speed and the same direction of movement of the first planet carrier 11 and the second planet carrier 21, not only the first planetary axle 14 and/or the second planetary axle may be employed. The method of 24 is realized, and the first planet carrier 11 and the second planet carrier 21 can also be directly fixedly connected through the intermediate connection structure 6, or the first planet carrier 11 and the second planet carrier can be connected by using the planetary axle and the intermediate connection structure 6 at the same time. 21, and the specific configuration regarding the intermediate connection structure 6 will be described in detail below.
参见图1和图2所示，第二行星轮22与第二齿圈23啮合，具体可为内啮合形式，即第二行星轮22位于第二齿圈23的内侧并与第二齿圈23上的齿啮合。第二行星轮22可为多个，并且沿周向等角间距分布在第二齿圈23内侧，例如，第二行星轮22可为三个，并且任意相邻的两个第二行星轮22之间间隔角度为120°。Referring to FIGS. 1 and 2, the second planetary gear 22 meshes with the second ring gear 23, specifically in the form of internal engagement, that is, the second planetary gear 22 is located inside the second ring gear 23 and with the second ring gear 23 The upper teeth mesh. The second planet gears 22 may be plural and distributed inside the second ring gear 23 at circumferentially equiangular intervals, for example, the second planet gears 22 may be three, and any two adjacent two planet wheels 22 may be adjacent. The angle between the intervals is 120°.
其中，需要说明的是，图4为根据本发明实施例的差速器100的平面原理简图，其中 示意性地示出了第一行星轮12与第二行星轮22之间的啮合关系以及第一行星轮12与第一齿圈13、第二行星轮22与第二齿圈23的啮合关系，由于图4为平面图，并且同时示出了上述三种啮合关系，因此各部件的相对位置关系仅是示意性的，并不表示或暗示各部件的实际空间布置位置。It should be noted that FIG. 4 is a schematic diagram of the planar principle of the differential 100 according to an embodiment of the present invention, wherein Schematically showing the meshing relationship between the first planet gear 12 and the second planet gear 22 and the meshing relationship between the first planet gear 12 and the first ring gear 13, the second planet gear 22 and the second ring gear 23, Since FIG. 4 is a plan view and at the same time the above three meshing relationships are shown, the relative positional relationship of the components is merely illustrative and does not represent or imply the actual spatial arrangement of the components.
在第一行星轮12和第二行星轮22均为多个的实施例中，多个第一行星轮12和多个第二行星轮22分别对应地啮合。例如，如图1、图2和图5所示，第一行星轮12和第二行星轮22均为三个，则第一个第一行星轮12可与对应的第一个第二行星轮22啮合，第二个第一行星轮12可与对应的第二个第二行星轮22啮合，第三个第一行星轮12可与对应的第三个第二行星轮22啮合，这样存在多组彼此啮合的第一行星轮12和第二行星轮22，在差速器100传输动力时，动力在多组彼此对应啮合的第一行星轮12与第二行星轮22之间传递将更加稳定、可靠。In embodiments where both the first planet gear 12 and the second planet gear 22 are multiple, the plurality of first planet gears 12 and the plurality of second planet gears 22 are respectively engaged. For example, as shown in FIG. 1, FIG. 2 and FIG. 5, the first planetary gear 12 and the second planetary gear 22 are both three, and the first first planetary gear 12 can be associated with the corresponding first second planetary gear. 22 meshing, the second first planet gear 12 can mesh with the corresponding second second planet gear 22, and the third first planet gear 12 can mesh with the corresponding third second planet gear 22, so that there are many The first planetary gear 12 and the second planetary gear 22, which are meshed with each other, are more stable when the differential 100 transmits power, and the power is transmitted between the plurality of sets of the first planetary gear 12 and the second planetary gear 22 that are meshed with each other. ,reliable.
其中，参照图4的实施例，第一行星轮12的公转轴线与第二行星轮22的公转轴线重合，即第一行星轮12与第二行星轮22具有相同的公转轴线O，并且第一行星轮12与第二行星轮22的公转半径(即行星轮的中心轴线距离公转轴线O的距离)相同。With reference to the embodiment of FIG. 4, the revolution axis of the first planet gear 12 coincides with the revolution axis of the second planet gear 22, that is, the first planet gear 12 and the second planet gear 22 have the same revolution axis O, and first The orbital radius of the planet gear 12 and the second planet gear 22 (i.e., the distance of the central axis of the planet gear from the revolution axis O) is the same.
如图1-图2、图4-图7所示的实施例中，第一行星轮12与第二行星轮22啮合配合。换言之，对于第一行星轮12而言，其不仅与第一齿圈13啮合，同时还与第二行星轮22啮合，对于第二行星轮22而言，其不仅与第二齿圈23啮合，同时还与第一行星轮12啮合。In the embodiment shown in FIGS. 1 - 2 and 4 - 7, the first planet gear 12 is in meshing engagement with the second planet gear 22. In other words, for the first planetary gear 12, it not only meshes with the first ring gear 13, but also meshes with the second planetary gear 22, and for the second planetary gear 22, it not only meshes with the second ring gear 23, At the same time, it also meshes with the first planet gear 12.
如图1-图4所示，第一齿圈13和第二齿圈23可以构成差速器100的两个动力输出端，第一行星架11和第二行星架21则对应构成差速器100的动力输入端，例如在本发明的一个实施例中，第一行星架11、第二行星架21与输入部3联动，换言之，输入部3、第一行星架11和第二行星架21的运动状态是相同的(即同速、同向运动)。在一些实施例中，输入部3、第一行星架11和第二行星架21同轴布置。这样外部动力源输出的动力可从输入部3输入，经过差速器100的差速作用后可分别从第一齿圈13和第二齿圈23输出。As shown in FIG. 1 to FIG. 4, the first ring gear 13 and the second ring gear 23 can constitute two power output ends of the differential 100, and the first carrier 11 and the second carrier 21 correspond to each other to form a differential. The power input end of 100, for example, in one embodiment of the invention, the first planet carrier 11 and the second planet carrier 21 are interlocked with the input unit 3, in other words, the input unit 3, the first planet carrier 11 and the second planet carrier 21 The state of motion is the same (ie, at the same speed, in the same direction). In some embodiments, the input portion 3, the first planet carrier 11 and the second planet carrier 21 are coaxially arranged. Thus, the power output from the external power source can be input from the input unit 3, and can be output from the first ring gear 13 and the second ring gear 23, respectively, after the differential action of the differential 100.
下面以该差速器100应用于轮间差速为例简单说明差速器100的工作原理，此时第一齿圈13可与左半轴相连，左半轴可与左侧车轮相连，第二齿圈23可与右半轴相连，右半轴可与右侧车轮相连，动力源如发动机和/或电机输出的动力可通过主减速器的减速作用后输出至输入部3，输入部3带动第一行星架11和第二行星架21同步旋转。若此时车辆行驶在平整的路面且没有转弯，左侧车轮和右侧车轮理论上转速相同，此时差速器100不起差速作用，第一行星架11和第二行星架21同速、同向转动，第一齿圈13和第二齿圈23同速、同向转动，第一行星轮12和第二行星轮22只公转、不自转。若此时车辆行驶在不平整的路面或者车辆转弯行驶，左侧车轮和右侧车轮理论上转速不同，第一齿圈13和第二齿圈23的转速也不同，即存在转速差，此时第一行星轮12和第二行星轮22在公转的同时 也自转，第一行星轮12和第二行星轮22的自转会使得第一齿圈13和第二齿圈23中的一个增速、另一个减速，增速的齿圈与减速的齿圈的转速差即为左右车轮的转速差，从而实现差速作用。The following is a brief description of the working principle of the differential 100 by applying the differential 100 to the inter-wheel differential. The first ring gear 13 can be connected to the left half shaft, and the left half shaft can be connected to the left wheel. The second ring gear 23 can be connected to the right half shaft, and the right half shaft can be connected to the right side wheel. The power output from the power source such as the engine and/or the motor can be output to the input unit 3 through the deceleration of the final drive, and the input unit 3 The first planet carrier 11 and the second planet carrier 21 are driven to rotate synchronously. If the vehicle is traveling on a smooth road surface and there is no turning at this time, the left wheel and the right wheel are theoretically rotated at the same speed. At this time, the differential 100 does not function as a differential, and the first carrier 11 and the second carrier 21 are at the same speed. In the same direction, the first ring gear 13 and the second ring gear 23 rotate at the same speed and in the same direction, and the first planetary gear 12 and the second planetary gear 22 only revolve and do not rotate. If the vehicle is driving on an uneven road surface or the vehicle is turning, the left and right wheels are theoretically different in rotational speed, and the rotational speeds of the first ring gear 13 and the second ring gear 23 are also different, that is, there is a difference in rotational speed. The first planet gear 12 and the second planet gear 22 are both revolving Also rotating, the rotation of the first planet gear 12 and the second planet gear 22 causes one of the first ring gear 13 and the second ring gear 23 to increase speed, the other to decelerate, the speed increasing ring gear and the decelerating ring gear The difference in rotational speed is the difference in rotational speed between the left and right wheels, thereby achieving differential action.
综上，根据本发明实施例的差速器100利用行星差速原理，在结构和连接形式上空间利用率更高，轴向尺寸更小，并且在生产和装配上更具有优势。这样的结构形式不但可以避免锥形齿轮轴向以及径向上的尺寸缺陷，附加地还可以更好地利用主减从动齿轮内部中空的空间，实现更好地空间利用率，极大地方便了差速器100总成的整车布置以及对重量大小的限制，同时也具备了更高的可靠性和更佳的传动效率，有利于提高动力传动链的可靠性和过弯时的动力输出流畅性，这相对于对称式锥齿轮差速器而言更具有实用性。In summary, the differential 100 according to an embodiment of the present invention utilizes the principle of planetary differential, has higher space utilization in structure and connection form, smaller axial dimension, and is more advantageous in production and assembly. Such a structural form can not only avoid the dimensional defects in the axial direction and the radial direction of the bevel gear, but also can better utilize the hollow space inside the main reduction driven gear, thereby achieving better space utilization and greatly facilitating the difference. The overall arrangement of the speedometer 100 assembly and the limitation on the weight, as well as higher reliability and better transmission efficiency, are beneficial to improve the reliability of the power transmission chain and the power output fluency during cornering. This is more practical than a symmetrical bevel gear differential.
下面对第一行星轮12与第二行星轮22的啮合关系结合具体实施例进行详细描述。The meshing relationship between the first planetary gear 12 and the second planetary gear 22 will be described in detail below in conjunction with a specific embodiment.
参照图1-图2且结合图6-图7，第一行星轮12与第二行星轮22在轴向(图6-图7中左右方向)上部分重叠，也就是说，第一行星轮12与第二行星轮22只有部分重叠，其余的部分错开，第一行星轮12和第二行星轮22重叠的部分可彼此啮合，而错开的部分则可与各自的齿圈啮合。Referring to Figures 1-2 and in conjunction with Figures 6-7, the first planet gear 12 and the second planet gear 22 partially overlap in the axial direction (left-right direction in Figures 6-7), that is, the first planet gear 12 is only partially overlapped with the second planet gear 22, the remaining portions are staggered, the overlapping portions of the first planet gear 12 and the second planet gear 22 are engageable with each other, and the staggered portions are engageable with the respective ring gears.
结合图6和图7所示，第一行星轮12可以包括第一齿部151和第二齿部152(以图7中K2虚线为分界线)，第二行星轮22可以包括第三齿部153和第四齿部154(以图7中K1虚线为分界线)，第二齿部152和第三齿部153构成重叠部分，即第二齿部152与第三齿部153在轴向上重叠且啮合配合，第一齿部151和第四齿部154在轴向上错开并与各自对应的齿圈啮合，即第一齿部151与第一齿圈13啮合，第四齿部154与第二齿圈23啮合。需要说明的是，虚线K1和K2的位置可根据实际情况进行调节，在此并未进行限定。6 and 7, the first planetary gear 12 may include a first tooth portion 151 and a second tooth portion 152 (with a broken line of K2 in FIG. 7), and the second planetary gear 22 may include a third tooth portion. 153 and the fourth tooth portion 154 (with a broken line of K1 in FIG. 7), the second tooth portion 152 and the third tooth portion 153 constitute an overlapping portion, that is, the second tooth portion 152 and the third tooth portion 153 are axially aligned. The first tooth portion 151 and the fourth tooth portion 154 are axially offset and mesh with the corresponding ring gears, that is, the first tooth portion 151 is meshed with the first ring gear 13 and the fourth tooth portion 154 is overlapped and engaged. The second ring gear 23 is engaged. It should be noted that the positions of the broken lines K1 and K2 can be adjusted according to actual conditions, and are not limited herein.
由此，使得差速器100的轴向尺寸更加紧凑，差速器100的体积更加小巧，利于差速器100的安装、布置。Thereby, the axial dimension of the differential 100 is made more compact, and the volume of the differential 100 is more compact, which facilitates the installation and arrangement of the differential 100.
根据本发明的一些实施例，第一齿圈13的齿数与第二齿圈23的齿数相等，第一行星轮12的齿数与第二行星轮22的齿数相等。According to some embodiments of the present invention, the number of teeth of the first ring gear 13 is equal to the number of teeth of the second ring gear 23, and the number of teeth of the first planet gear 12 is equal to the number of teeth of the second planet gear 22.
根据本发明的一些实施例，第一行星轮12和第二行星轮22均为圆柱齿轮，相比传统对称式锥齿轮差速器，利用圆柱齿轮的差速器100结构更加紧凑，具体而言，其在结构和连接形式上空间利用率更高，轴向尺寸更小，并且在生产和装配上更具有优势。According to some embodiments of the present invention, the first planetary gear 12 and the second planetary gear 22 are both spur gears, and the differential 100 using the spur gear is more compact in structure than the conventional symmetrical bevel gear differential, in particular It has higher space utilization in structure and connection form, smaller axial dimension, and is more advantageous in production and assembly.
下面结合具体实施例对第一齿圈13和第二齿圈23的结构进行详细描述。The structure of the first ring gear 13 and the second ring gear 23 will be described in detail below in conjunction with specific embodiments.
在本发明的一些实施例中，第一齿圈13和第二齿圈23为对称结构，换言之，第一齿圈13和第二齿圈23对称设置，这样能够增加齿圈的通用性，降低成本。In some embodiments of the present invention, the first ring gear 13 and the second ring gear 23 are symmetric structures, in other words, the first ring gear 13 and the second ring gear 23 are symmetrically arranged, which can increase the versatility of the ring gear and reduce cost.
如图1-图2所示的实施例中，第一齿圈13和第二齿圈23中的每一个均包括：主体平板部161和设置在主体平板部161的外周沿的环形侧壁部162，主体平板部161与环形侧 壁部162可以是一体成型部件。环形侧壁部162的内壁面上设置有多个轮齿，主体平板部161与环形侧壁部162之间限定出空腔A1、A2，即第一齿圈13的主体平板部161与环形侧壁部162之间限定出空腔A1，第二齿圈23的主体平板部161与环形侧壁部162之间限定出空腔A2(如图4)，第一齿圈13内的空腔A1与第二齿圈23内的空腔A2朝向彼此以构成安装空间A(如图4)，其中第一行星架11和第一行星轮12以及第二行星架21和第二行星轮22收纳在安装空间A内，这样使得差速器100的结构相对更加紧凑，占用体积更小，更易于布置，同时第一齿圈13和第二齿圈23充当外部壳体的功用，能够保护收纳在其中的行星架和行星轮，提高寿命。此外，第一齿圈13和第二齿圈23所限定出的安装空间A相对较为封闭，外部杂物不易进入到安装空间A内而影响运动部件，保证了差速器100的稳定工作。In the embodiment shown in FIGS. 1 to 2, each of the first ring gear 13 and the second ring gear 23 includes a main body flat plate portion 161 and an annular side wall portion provided at an outer peripheral edge of the main body flat plate portion 161. 162, the main body flat portion 161 and the ring side Wall portion 162 can be an integrally formed component. A plurality of gear teeth are disposed on the inner wall surface of the annular side wall portion 162, and the cavity A1, A2 is defined between the main body flat plate portion 161 and the annular side wall portion 162, that is, the main body flat portion 161 and the annular side of the first ring gear 13 A cavity A1 is defined between the wall portions 162, and a cavity A2 (FIG. 4) is defined between the main body flat portion 161 of the second ring gear 23 and the annular side wall portion 162, and the cavity A1 in the first ring gear 13 is defined. The cavity A2 in the second ring gear 23 faces each other to constitute an installation space A (Fig. 4), wherein the first planet carrier 11 and the first planet gear 12 and the second planet carrier 21 and the second planet gear 22 are housed in The installation space A is such that the structure of the differential 100 is relatively more compact, takes up less volume, and is easier to arrange, while the first ring gear 13 and the second ring gear 23 function as an outer casing to protect the housing therein. The planet carrier and planet wheels enhance life. In addition, the installation space A defined by the first ring gear 13 and the second ring gear 23 is relatively closed, and the external debris is not easily entered into the installation space A to affect the moving parts, thereby ensuring stable operation of the differential 100.
下面对输入部3的具体构造结合具体的实施例进行详细描述。The specific configuration of the input unit 3 will be described in detail below in conjunction with specific embodiments.
根据本发明的一些实施例，输入部3构造为输入端齿轮。如图1-图3所示，输入端齿轮3构造为环形(该输入端齿轮3的齿形成在外周面上)并且套设在第一齿圈13和第二齿圈23的外表面，可以理解的是，输入端齿轮3的内径尺寸可以大于第一齿圈13和第二齿圈23的外径，这样通过将输入端齿轮3套在第一齿圈13和第二齿圈23的外面，使得位于两个齿圈内部的部件不暴露出来，保护齿圈内部的部件。According to some embodiments of the invention, the input 3 is configured as an input gear. As shown in FIG. 1 to FIG. 3, the input end gear 3 is configured to be annular (the teeth of the input end gear 3 are formed on the outer peripheral surface) and sleeved on the outer surfaces of the first ring gear 13 and the second ring gear 23, It is understood that the inner diameter of the input end gear 3 may be larger than the outer diameters of the first ring gear 13 and the second ring gear 23, such that the input end gear 3 is placed outside the first ring gear 13 and the second ring gear 23 The components inside the two ring gears are not exposed, protecting the components inside the ring gear.
结合图4所示，第一齿圈13和第二齿圈23在轴向上设置有间隙D，也就是说，第一齿圈13与第二齿圈23在轴向上彼此间隔开，并非紧密贴合。对于本领域技术人员而言，由于第一行星轮12与第二行星轮22的啮合部分的宽度在一定程度上决定了该间隙D的大小(另外，中间连接结构6中的延伸臂部63的厚度也可以决定该间隙D，这将在下面说明，这里先只以两个行星轮22的啮合部分的宽度决定间隙D为例说明)，即第一行星轮12与第二行星轮22的啮合部分的宽度可以与该间隙D的最小值相等，因此通过控制第一行星轮12和第二行星轮22啮合部分的宽度，可以间接控制该间隙D的大小，对于本领域技术人员而言，在保证第一行星轮12与第二行星轮22能够稳定传递动力以及第一行星轮12与第二行星轮22的使用寿命的前提下，可将第一行星轮12与第二行星轮22的啮合部分的宽度设置的相对较窄，这样可以有效减少该间隙D，使得差速器100的轴向尺寸更小、更紧凑，易于布置。As shown in FIG. 4, the first ring gear 13 and the second ring gear 23 are provided with a gap D in the axial direction, that is, the first ring gear 13 and the second ring gear 23 are axially spaced apart from each other, not Closely fit. For the person skilled in the art, the width of the meshing portion of the first planet gear 12 and the second planet gear 22 determines the size of the gap D to some extent (in addition, the extending arm portion 63 of the intermediate connecting structure 6) The thickness may also determine the gap D, which will be explained below. Here, only the width D of the meshing portion of the two planet gears 22 is used to determine the gap D as an example, that is, the meshing of the first planet gear 12 with the second planet gear 22 The width of the portion may be equal to the minimum value of the gap D, so that by controlling the width of the meshing portion of the first planet gear 12 and the second planet gear 22, the size of the gap D can be indirectly controlled, for those skilled in the art, The first planetary gear 12 and the second planetary gear 22 are ensured to stably transmit power and the service life of the first planetary gear 12 and the second planetary gear 22, and the first planetary gear 12 and the second planetary gear 22 can be meshed. The width of the portion is relatively narrow, so that the gap D can be effectively reduced, so that the axial dimension of the differential 100 is smaller, more compact, and easier to arrange.
在一些实施例中，输入端齿轮3环绕并遮盖该间隙D。由此，使得安装空间A的封闭性更好，外部杂物更难进入到安装空间A内而影响运动部件，进一步保证了差速器100的稳定工作，同时还能至少在一定程度上节省差速器的轴向空间和径向空间。In some embodiments, the input gear 3 surrounds and covers the gap D. Thereby, the sealing space of the installation space A is better, and the external debris is more difficult to enter into the installation space A to affect the moving parts, thereby further ensuring the stable operation of the differential 100, and at the same time saving the difference at least to some extent. The axial space and radial space of the speeder.
在一些实施例中，输入端齿轮3为主减速器从动齿轮。由此，可以更好地利用主减从动齿轮内部中空的空间，实现更好地空间利用率，极大地方便了差速器100总成的整车布 置以及对重量大小的限制。In some embodiments, the input end gear 3 is the main reducer driven gear. Thereby, the hollow space inside the main reduction driven gear can be better utilized, thereby achieving better space utilization, and greatly facilitating the whole vehicle layout of the differential 100 assembly. Set and limit the weight.
需要说明的是，在图1、图2和图4的实施例中，第一齿圈13和第二齿圈23都包括主体平板部161和环形侧壁部162，而上述图4(结合图1-图2)的间隙D指的是第一齿圈13的环形侧壁部162和第二齿圈23的环形侧壁部162之间的距离。It should be noted that, in the embodiments of FIG. 1 , FIG. 2 and FIG. 4 , the first ring gear 13 and the second ring gear 23 both include the main body flat plate portion 161 and the annular side wall portion 162, and the above FIG. 4 (combined view) The gap D of 1 - 2) refers to the distance between the annular side wall portion 162 of the first ring gear 13 and the annular side wall portion 162 of the second ring gear 23.
而在本发明的另一些实施例中，如参见图8和图9的实施例中，第一齿圈13和第二齿圈23中的每一个还进一步包括环形凸缘部163，环形凸缘部163从环形侧壁部162的端面向远离主体平板部161的方向延伸，在图8的实施例中，环形凸缘部163的内径可与环形侧壁部162的外径大体相等，这样环形凸缘部163在径向上相当于向外突出于环形侧壁部162(即第一齿圈13或第二齿圈23的外周面)。而在图9的实施例中，环形凸缘部163外径可与环形侧壁部162的外径大体相等，而环形凸缘部163的内径可以大于环形侧壁部162的内径，也就是说，环形凸缘部163的厚度比环形侧壁部162的厚度要薄一些。In still other embodiments of the present invention, as in the embodiment of Figures 8 and 9, each of the first ring gear 13 and the second ring gear 23 further includes an annular flange portion 163, an annular flange The portion 163 extends from the end surface of the annular side wall portion 162 in a direction away from the main body flat portion 161. In the embodiment of Fig. 8, the inner diameter of the annular flange portion 163 may be substantially equal to the outer diameter of the annular side wall portion 162, such that the ring The flange portion 163 corresponds to protrude outward in the radial direction from the annular side wall portion 162 (that is, the outer circumferential surface of the first ring gear 13 or the second ring gear 23). In the embodiment of FIG. 9, the outer diameter of the annular flange portion 163 may be substantially equal to the outer diameter of the annular side wall portion 162, and the inner diameter of the annular flange portion 163 may be larger than the inner diameter of the annular side wall portion 162, that is, The thickness of the annular flange portion 163 is thinner than the thickness of the annular side wall portion 162.
但是，需要说明，在图1、图2和图4实施例的齿圈结构中，其两个齿圈之间的间隙D指代两个齿圈的环形侧壁部162之间的间隙。而图8和图9实施例中的齿圈结构，其两个齿圈之间的间隙D指代两个齿圈的环形凸缘部163之间的间隙。However, it should be noted that in the ring gear structure of the embodiment of Figs. 1, 2 and 4, the gap D between the two ring gears refers to the gap between the annular side wall portions 162 of the two ring gears. In the ring gear structure of the embodiment of Figs. 8 and 9, the gap D between the two ring gears refers to the gap between the annular flange portions 163 of the two ring gears.
下面结合具体的实施例对中间连接结构6进行详细描述。The intermediate connection structure 6 will be described in detail below in conjunction with a specific embodiment.
如图1和图2所示，中间连接结构6的作用是用于将第一行星架11、第二行星架21连接至输入部3，使得第一行星架11、第二行星架21与输入部3能够同轴联动。另外，中间连接结构6也可以分别与第一行星架11、第二行星架21固定连接，且所述输入部3固定于中间连接结构6的外表面，同样可以使得第一行星架11、第二行星架21与输入部3能够同轴联动。As shown in FIGS. 1 and 2, the intermediate connection structure 6 functions to connect the first planet carrier 11 and the second planet carrier 21 to the input portion 3 such that the first planet carrier 11, the second planet carrier 21 and the input The part 3 can be coaxially linked. In addition, the intermediate connection structure 6 can also be fixedly connected to the first planet carrier 11 and the second planet carrier 21, respectively, and the input portion 3 is fixed to the outer surface of the intermediate connection structure 6, and the first planet carrier 11 can also be made. The two planet carriers 21 and the input unit 3 can be coaxially linked.
对于中间连接结构6的具体构造，本发明给出了一种可行的实施方式，当然这并不表示或暗示本发明的中间连接结构6只能采用该实施例中的结构。即，下面实施例中将要介绍的中间连接结构6仅是一种可行的实施方式，并不是对本发明保护范围的一种限制。The present invention provides a possible embodiment for the specific construction of the intermediate connection structure 6, which of course does not mean or suggest that the intermediate connection structure 6 of the present invention can only adopt the structure of this embodiment. That is, the intermediate connection structure 6 to be described in the following embodiments is only one possible implementation manner, and is not a limitation on the scope of protection of the present invention.
参见图1和图2所示，该实施例中的输入部3为环形的输入端齿轮3，中间连接结构6包括第一连接支架61和第二连接支架62，第一连接支架61用于连接第一行星架11与输入部3(即输入端齿轮3)，第二连接支架62用于连接第二行星架21与输入部3(即输入端齿轮3)，其中第一连接支架61和第二连接支架62的结构可以相同，并且每一个均可包括：中心本体部64以及延伸臂部63(结合图5)，其中第一连接支架61的中心本体部和第二连接支架62的中心本体部可以成一体结构，以形成共用的一个中心本体部，但不限于此。Referring to Figures 1 and 2, the input portion 3 in this embodiment is an annular input end gear 3, and the intermediate connection structure 6 includes a first connection bracket 61 and a second connection bracket 62, and the first connection bracket 61 is used for connection. The first carrier 11 and the input portion 3 (ie, the input end gear 3), and the second connecting bracket 62 is used to connect the second carrier 21 with the input portion 3 (ie, the input end gear 3), wherein the first connecting bracket 61 and the The two connection brackets 62 may have the same structure, and each may include: a central body portion 64 and an extension arm portion 63 (in conjunction with FIG. 5), wherein the central body portion of the first connection bracket 61 and the central body of the second connection bracket 62 The portions may be integrally formed to form a common central body portion, but are not limited thereto.
对于上述间隙D，正如上面所提及的两个行星轮的啮合宽度可以在一定程度上决定间隙D的大小，与此同时，延伸臂部63的厚度在一定程度上也决定了间隙D的大小。具体而言，在两个行星轮的啮合宽度与延伸臂部63的整体厚度相等时，该间隙D的大小可与两个行星 轮的啮合宽度或者延伸臂部63的整体厚度大体相等。而在延伸臂部63的整体厚度大于两个行星轮的啮合宽度时，该间隙D的大小可与延伸臂部63的整体厚度大体相等。而在延伸臂部63的整体厚度小于两个行星轮的啮合宽度时，该间隙D的大小可与两个行星轮的啮合宽度大体相等。需要说明的是延伸臂部63的整体厚度指第一连接支架61的延伸臂部63的厚度与第二连接支架62的延伸臂部63的厚度之和。For the above-mentioned gap D, as the above-mentioned meshing widths of the two planetary wheels can determine the size of the gap D to some extent, at the same time, the thickness of the extending arm portion 63 also determines the size of the gap D to some extent. . Specifically, when the meshing width of the two planet wheels is equal to the overall thickness of the extending arm portion 63, the gap D can be sized to two planets The meshing width of the wheel or the overall thickness of the extended arm portion 63 is substantially equal. When the overall thickness of the extending arm portion 63 is greater than the meshing width of the two planet wheels, the gap D may be substantially equal in size to the entire thickness of the extending arm portion 63. When the overall thickness of the extension arm portion 63 is smaller than the meshing width of the two planet wheels, the gap D may be substantially equal to the meshing width of the two planet wheels. It should be noted that the overall thickness of the extending arm portion 63 refers to the sum of the thickness of the extending arm portion 63 of the first connecting bracket 61 and the thickness of the extending arm portion 63 of the second connecting bracket 62.
结合图5所示，延伸臂部63为多个且设置在中心本体部64的外周面上，多个延伸臂部63与中心本体部64可以是一体结构，但不限于此。多个延伸臂部63以中心本体部64为中心且大体呈放射状分布，在图5的示例中，延伸臂部63为三个且等间距分布。延伸臂部63用于与输入部3相连。在一些实施例中，延伸臂部63的外端可延伸至输入部3例如环形的主减速器从动齿轮的内周面处并与其内周面固定。As shown in FIG. 5, the plurality of extending arm portions 63 are provided on the outer peripheral surface of the center body portion 64, and the plurality of extending arm portions 63 and the central body portion 64 may be integrally formed, but are not limited thereto. The plurality of extension arm portions 63 are generally radially distributed around the central body portion 64. In the example of Fig. 5, the extension arm portions 63 are three and equally spaced. The extension arm portion 63 is for connection with the input portion 3. In some embodiments, the outer end of the extension arm portion 63 may extend to and be fixed to the inner peripheral surface of the input portion 3, such as an annular final drive driven gear.
每一组对应啮合的第一行星轮12和第二行星轮22位于相邻的两个延伸臂部63之间，如在图5的示例中，延伸臂部63为三个，该三个延伸臂部63限定出三个容纳腔(每相邻的两个延伸臂部63与输入端齿轮3的内周面限定出一个容纳腔)，每个容纳腔内均可以设置一对啮合的第一行星轮12和第二行星轮22，这样使得差速器100的整体结构更加紧凑，同时使得差速器100的重心更接近或位于中心位置，大大改善了差速器100高速运转时由于偏心或偏心较大造成差速器100运行不稳定、寿命低等情况。Each set of correspondingly engaged first planet gears 12 and second planet gears 22 are located between adjacent two extension arm portions 63, as in the example of Figure 5, the extension arm portions 63 are three, the three extensions The arm portion 63 defines three receiving chambers (each adjacent two extending arm portions 63 and an inner peripheral surface of the input end gear 3 define a receiving cavity), and each of the receiving chambers may be provided with a pair of first engaged The planet gear 12 and the second planet gear 22, such that the overall structure of the differential 100 is more compact, while making the center of gravity of the differential 100 closer to or at a central position, greatly improving the eccentricity of the differential 100 during high speed operation or The large eccentricity causes the differential 100 to be unstable in operation and low in life.
在一些实施例中，如图3和图4所示，第一齿圈13可以同轴地连接有第一输出轴41，第二齿圈23可以同轴地连接有第二输出轴42。如图2和图4所示，同时第一行星架11同轴地连接有第一行星架轴111，第二行星架21同轴地连接有第二行星架轴211，第一输出轴41可以是空心轴且可同轴地套在第一行星架轴111上，第二输出轴42同样可为空心轴且同轴地套设在第二行星架轴211上。其中，第一行星架轴111与第一连接支架61的中心本体部64同轴固定，第二行星架轴211可与第二连接支架62的中心本体部64同轴固定，但不限于此。In some embodiments, as shown in FIGS. 3 and 4, the first ring gear 13 may be coaxially coupled to the first output shaft 41, and the second ring gear 23 may be coaxially coupled to the second output shaft 42. As shown in FIG. 2 and FIG. 4, the first carrier 11 is coaxially coupled to the first carrier shaft 111, and the second carrier 21 is coaxially coupled to the second carrier shaft 211. The first output shaft 41 can be It is a hollow shaft and can be coaxially sleeved on the first planet carrier shaft 111. The second output shaft 42 can also be a hollow shaft and coaxially sleeved on the second planet carrier shaft 211. The first carrier shaft 111 is coaxially fixed to the central body portion 64 of the first connecting bracket 61, and the second carrier shaft 211 is coaxially fixed to the central body portion 64 of the second connecting bracket 62, but is not limited thereto.
此外，第一齿圈13和第二齿圈23的径向尺寸相同，且第一齿圈13和第二齿圈23中的每一个均可以是一体成型部件。Further, the first ring gear 13 and the second ring gear 23 have the same radial dimension, and each of the first ring gear 13 and the second ring gear 23 may be an integrally formed member.
上面已详细介绍根据本发明实施例的差速器100，下面将对动力驱动***1000的其余结构进行详细说明。The differential 100 according to an embodiment of the present invention has been described in detail above, and the remaining structure of the power drive system 1000 will be described in detail below.
参照图10-图15所示，变速器104可以包括多个输入轴101、102和动力输出轴103。在一些实施例中，变速器104的动力输出轴103可以是一个，但不限于此。动力输出轴103设置成与输入部3联动，例如动力输出轴103上设置有输出齿轮110，输出齿轮110与输入部3啮合传动。在一些实施例中，输出齿轮110与输入部3构成主减速器，其中输出齿轮110构造为主减速器主动齿轮，输入部3则对应构造为主减速器 从动齿轮。这样，使得动力驱动***1000结构更加紧凑，而且差速器100内置在主减速器从动齿轮内部，可以使差速器100更好地利用该内部空间，方便整个动力驱动***1000的布置。Referring to Figures 10-15, the transmission 104 can include a plurality of input shafts 101, 102 and a power take-off shaft 103. In some embodiments, the power take off shaft 103 of the transmission 104 may be one, but is not limited thereto. The power output shaft 103 is disposed in linkage with the input unit 3. For example, the power output shaft 103 is provided with an output gear 110, and the output gear 110 is meshed with the input unit 3. In some embodiments, the output gear 110 and the input portion 3 constitute a final drive, wherein the output gear 110 is configured as a main reducer drive gear, and the input portion 3 is correspondingly configured as a main reducer. Driven gear. In this way, the structure of the power drive system 1000 is made more compact, and the differential 100 is built inside the driven gear of the final drive, so that the differential 100 can better utilize the internal space, facilitating the arrangement of the entire power drive system 1000.
多个输入轴101、102中的一个输入轴设置成可选择性地与动力输出轴103联动。换言之，如图10所示，该其中一个输入轴如第一输入轴101(图11中为第二输入轴102)能够与动力输出轴103进行联动，同时该其中一个输入轴如第一输入轴101也能与动力输出轴103断开。对于其余的输入轴，则均设置成与动力输出轴103联动，即这些输入轴动作则动力输出轴103也跟随动作、或者动力输出轴103动作则这些输入轴也随之动作。One of the plurality of input shafts 101, 102 is arranged to be selectively engageable with the power take-off shaft 103. In other words, as shown in FIG. 10, one of the input shafts, such as the first input shaft 101 (the second input shaft 102 in FIG. 11), can be linked with the power output shaft 103, and one of the input shafts is the first input shaft. The 101 can also be disconnected from the power output shaft 103. The remaining input shafts are all arranged in conjunction with the power output shaft 103. That is, when the input shafts are operated, the power output shaft 103 also follows the action, or the power output shaft 103 operates, and the input shafts also operate.
如图10所示，第一电动发电机401设置成与该其中一个输入轴如第一输入轴101联动，即和第一电动发电机401进行联动的输入轴为与动力输出轴103选择性联动的输入轴。在一些实施例中，动力输出轴103上空套设置有空套从动齿轮108，空套从动齿轮108与上述的其中一个输入轴联动，同步器109设置成用于同步动力输出轴103与空套从动齿轮108。可以理解的是，在同步器109处于接合状态时，同步器109同步空套从动齿轮108和动力输出轴103，这样来自第一电动发电机401的动力能够在同步器109的接合作用下从动力输出轴103输出至差速器100，而在同步器109处于断开状态时，第一电动发电机401相当于与动力输出轴103断开。由此，同步器109充当第一电动发电机401的动力开关，能够控制第一电动发电机401动力的输出与断开。As shown in FIG. 10, the first motor generator 401 is disposed in linkage with the one input shaft, such as the first input shaft 101, that is, the input shaft that is linked with the first motor generator 401 is selectively linked with the power output shaft 103. Input shaft. In some embodiments, the power take-off shaft 103 is provided with an idler driven gear 108, and the idler driven gear 108 is coupled with one of the input shafts. The synchronizer 109 is configured to synchronize the power output shaft 103 with the air. The set of driven gears 108. It can be understood that when the synchronizer 109 is in the engaged state, the synchronizer 109 synchronizes the idler driven gear 108 and the power output shaft 103 so that the power from the first motor generator 401 can be engaged by the synchronizer 109. The power output shaft 103 is output to the differential 100, and when the synchronizer 109 is in the off state, the first motor generator 401 is equivalent to being disconnected from the power output shaft 103. Thereby, the synchronizer 109 functions as a power switch of the first motor generator 401, and can control the output and disconnection of the power of the first motor generator 401.
在一些实施例中，同步器109设置在动力输出轴103上且用于接合空套从动齿轮108。由此，结构简单，易于实现。In some embodiments, the synchronizer 109 is disposed on the power take-off shaft 103 and is configured to engage the idler driven gear 108. Thereby, the structure is simple and easy to implement.
对于其余输入轴与动力输出轴103的传动方式，可以通过齿轮传动方式实现。例如，动力输出轴103上固定设置有固定从动齿轮107，固定从动齿轮107与其余的输入轴联动，即除去上述图10实施例中的输入轴101或者图11实施例中的输入轴102。For the transmission mode of the remaining input shaft and the power output shaft 103, it can be realized by gear transmission. For example, the power output shaft 103 is fixedly provided with a fixed driven gear 107, and the fixed driven gear 107 is interlocked with the remaining input shafts, that is, the input shaft 101 in the above embodiment of FIG. 10 or the input shaft 102 in the embodiment of FIG. 11 is removed. .
例如参见图10和图11的具体实施例，动力输出轴103上同时固定设置有固定从动齿轮107，且空套有空套从动齿轮108，而输入轴上对应地固定设置有固定主动齿轮105、106，空套从动齿轮108和固定从动齿轮107分别与对应的固定主动齿轮啮合。如，空套从动齿轮108与固定从动齿轮107的总数与固定主动齿轮的数量相同。For example, referring to the specific embodiment of FIG. 10 and FIG. 11, the power output shaft 103 is fixedly fixedly provided with a fixed driven gear 107, and the empty sleeve has an idler driven gear 108, and the input shaft is correspondingly fixedly provided with a fixed driving gear. 105, 106, the idler driven gear 108 and the fixed driven gear 107 are respectively meshed with the corresponding fixed driving gears. For example, the total number of idler driven gears 108 and fixed driven gears 107 is the same as the number of fixed drive gears.
参见图10-图11的示例，空套从动齿轮108和固定从动齿轮107的数量均为一个，对应地，固定主动齿轮的数量为两个，空套从动齿轮108与一个固定主动齿轮啮合构成一对齿轮副，固定从动齿轮107与另一个固定主动齿轮啮合构成另一对齿轮副。可以理解，该两对齿轮副的传动速比不同，因此该实施例中的变速器104具有两个不同速比的传动挡位，这样动力驱动***1000的结构相对简单、紧凑，并且也能够满足车 辆正常行驶对传动速比的要求。Referring to the example of FIGS. 10-11, the number of the idler driven gear 108 and the fixed driven gear 107 is one. Correspondingly, the number of the fixed driving gears is two, the idler driven gear 108 and a fixed driving gear. Engagement constitutes a pair of gear pairs, and the fixed driven gear 107 meshes with another fixed drive gear to form another pair of gear pairs. It can be understood that the transmission speed ratios of the two pairs of gear pairs are different, so the transmission 104 in this embodiment has two transmission gears of different speed ratios, so that the structure of the power drive system 1000 is relatively simple and compact, and can also satisfy the vehicle. The requirement of the normal driving speed ratio.
如图10-图15所示，多个输入轴包括第一输入轴101和第二输入轴102，第一输入轴101可以是实心轴，第二输入轴102可以是空心轴，第二输入轴102套设在第一输入轴101上，如第二输入轴102同轴地套在第一输入轴101上，第一输入轴101的轴向长度大于第二输入轴102的轴向长度，第一输入轴101的一端如右端可从第二输入轴102内部延伸出。As shown in Figures 10-15, the plurality of input shafts include a first input shaft 101 and a second input shaft 102, the first input shaft 101 can be a solid shaft, and the second input shaft 102 can be a hollow shaft, a second input shaft The sleeve 102 is disposed on the first input shaft 101. The second input shaft 102 is coaxially sleeved on the first input shaft 101. The axial length of the first input shaft 101 is greater than the axial length of the second input shaft 102. One end of an input shaft 101, such as a right end, may extend from the interior of the second input shaft 102.
每个输入轴可以只固定设置有一个固定主动齿轮，也就是说，固定主动齿轮包括第一固定主动齿轮106和第二固定主动齿轮105，第一固定主动齿轮106固定设置在第一输入轴101上，第二固定主动齿轮105固定设置在第二输入轴102上。Each input shaft may be fixedly provided with only one fixed driving gear, that is, the fixed driving gear includes a first fixed driving gear 106 and a second fixed driving gear 105, and the first fixed driving gear 106 is fixedly disposed on the first input shaft 101. The second fixed driving gear 105 is fixedly disposed on the second input shaft 102.
在图10、图12-图15的示例中，空套从动齿轮108与第一固定主动齿轮106啮合，固定从动齿轮107与第二固定主动齿轮105啮合。同时第一电动发电机401与第一输入轴101联动，如第一电动发电机401通过齿轮结构与第一固定主动齿轮106联动。具体可为第一电动发电机401通过齿轮402、齿轮403与第一固定主动齿轮106传动，通过合理地设计上述齿轮的齿数可以获得第一电动发电机401所需的传动速比。In the example of FIGS. 10 and 12 to 15, the idler driven gear 108 meshes with the first fixed drive gear 106, and the fixed driven gear 107 meshes with the second fixed drive gear 105. At the same time, the first motor generator 401 is interlocked with the first input shaft 101, for example, the first motor generator 401 is interlocked with the first fixed driving gear 106 through a gear structure. Specifically, the first motor generator 401 can be driven by the gear 402 and the gear 403 and the first fixed driving gear 106. The gear ratio required by the first motor generator 401 can be obtained by appropriately designing the number of teeth of the gear.
而在图11的示例中，空套从动齿轮108与第二固定主动齿轮105啮合，固定从动齿轮107与第一固定主动齿轮106啮合。同时第一电动发电机401与第二输入轴102联动，如第一电动发电机401通过齿轮结构与第二固定主动齿轮105联动。具体可为第一电动发电机401通过齿轮402、齿轮403、齿轮404、齿轮405与第二固定主动齿轮105传动，其中齿轮404和齿轮405可以固定在同一轴406上，通过合理地设计上述齿轮的齿数可以获得第一电动发电机401所需的传动速比。In the example of FIG. 11, the idler driven gear 108 meshes with the second fixed drive gear 105, and the fixed driven gear 107 meshes with the first fixed drive gear 106. At the same time, the first motor generator 401 is interlocked with the second input shaft 102, for example, the first motor generator 401 is coupled to the second fixed driving gear 105 through a gear structure. Specifically, the first motor generator 401 can be driven by the gear 402, the gear 403, the gear 404, the gear 405, and the second fixed driving gear 105. The gear 404 and the gear 405 can be fixed on the same shaft 406, and the gear is properly designed. The number of teeth can obtain the required transmission ratio of the first motor generator 401.
动力驱动***1000还可以包括发动机301，发动机301设置成可选择性地与多个输入轴中的至少一个接合。在一些实施例中，输入轴是两个，并且发动机301与两个输入轴之间设置有双离合器204。双离合器204包括：第一接合部分201、第二接合部分202和第三接合部分203，其中第一接合部分201和第二接合部分202可以是双离合器204的两个从动盘，第三接合部分203可以是双离合器204的壳体，两个从动盘中的至少一个可选择性地接合壳体，也就是说，第一接合部分201和第二接合部分202中的至少一个可以选择性地接合第三接合部分203。当然，两个从动盘也可以与壳体全部断开，即第一接合部分201和第二接合部分202均与第三接合部分203处于断开状态。The powertrain system 1000 can also include an engine 301 that is configured to selectively engage at least one of the plurality of input shafts. In some embodiments, the input shaft is two and a dual clutch 204 is disposed between the engine 301 and the two input shafts. The dual clutch 204 includes a first engagement portion 201, a second engagement portion 202, and a third engagement portion 203, wherein the first engagement portion 201 and the second engagement portion 202 can be two driven discs of the dual clutch 204, the third engagement The portion 203 can be a housing of the dual clutch 204, at least one of the two driven disks can selectively engage the housing, that is, at least one of the first engagement portion 201 and the second engagement portion 202 can be selectively The third joint portion 203 is joined to the ground. Of course, the two driven disks can also be completely disconnected from the housing, that is, both the first engaging portion 201 and the second engaging portion 202 are in an open state with the third engaging portion 203.
参见图10-图15，发动机301与第三接合部分203相连，第一输入轴101与第一接合部分201相连，第二输入轴102与第二接合部分202相连。这样，发动机301产生的动力可通过双离合器204而选择性地输出至第一输入轴101、第二输入轴102。Referring to Figures 10-15, the engine 301 is coupled to a third engagement portion 203, the first input shaft 101 is coupled to the first engagement portion 201, and the second input shaft 102 is coupled to the second engagement portion 202. Thus, the power generated by the engine 301 can be selectively output to the first input shaft 101 and the second input shaft 102 through the dual clutch 204.
根据本发明的一个实施例，参见图16-图17所示且结合图1-图9所示，第二电动 发电机501与第一齿圈13联动，第三电动发电机503与第二齿圈23联动。在一些实施例中，第一齿圈13的外周面上设置有第一外齿505，第一外齿505可一体地形成在第一齿圈13的外周面上。第二齿圈23的外周面上设置有第二外齿506，第二外齿506可一体地形成在第二齿圈23的外周面上。第二电动发电机501与第一外齿505联动，第三电动发电机503与第二外齿506联动。According to an embodiment of the present invention, referring to Figures 16-17 and in conjunction with Figures 1-9, the second electric The generator 501 is interlocked with the first ring gear 13, and the third motor generator 503 is interlocked with the second ring gear 23. In some embodiments, the outer peripheral surface of the first ring gear 13 is provided with a first outer tooth 505, and the first outer tooth 505 may be integrally formed on the outer circumferential surface of the first ring gear 13. The outer peripheral surface of the second ring gear 23 is provided with a second outer tooth 506, and the second outer tooth 506 is integrally formed on the outer peripheral surface of the second ring gear 23. The second motor generator 501 is interlocked with the first external teeth 505, and the third motor generator 503 is interlocked with the second external teeth 506.
在一些实施例中，第二电动发电机501的电机轴上可设置有齿轮502，齿轮502与第一外齿505啮合，第三电动发电机503的电机轴上可设置有齿轮504，齿轮504与第二外齿506啮合。但是，可以理解的是，第二电动发电机501与第一齿圈13以及第三电动发电机503与第二齿圈23的联动方式并不限于这里描述的方式。In some embodiments, the motor shaft of the second motor generator 501 may be provided with a gear 502, the gear 502 meshes with the first external tooth 505, and the motor shaft of the third motor generator 503 may be provided with a gear 504, the gear 504 Engaged with the second outer teeth 506. However, it can be understood that the manner in which the second motor generator 501 and the first ring gear 13 and the third motor generator 503 and the second ring gear 23 are interlocked is not limited to the manner described herein.
参见图16-图17所示，第二电动发电机501和第三电动发电机503关于差速器100左右对称分布，这样可以使得动力驱动***1000的重心处在中心位置或更靠近中心位置。Referring to FIGS. 16-17, the second motor generator 501 and the third motor generator 503 are symmetrically distributed left and right with respect to the differential 100 such that the center of gravity of the power drive system 1000 can be centered or closer to the center position.
参见图18-图19的实施例，该实施例中的动力驱动***1000与图10-图17实施例中的动力驱动***1000的一个主要区别在于：输入轴的数量。该些实施例中，输入轴包括第一输入轴101、第二输入轴102和第三输入轴1003，第三输入轴1003可以是空心轴且套设在第二输入轴102上，第二输入轴102也可以是空心轴且套设在第一输入轴101上，三个输入轴可以是同轴布置的。发动机301与第一输入轴101、第二输入轴102和第三输入轴1003之间通过三离合器205相连。具体而言，三离合器205具有第一从动盘206、第二从动盘207、第三从动盘208和壳体209，壳体209可选择性地与第一从动盘206、第二从动盘207、第三从动盘208中的至少一个接合，第一输入轴101与第一从动盘206连接，第二输入轴102与第二从动盘207连接，第三输入轴1003与第三从动盘208连接，发动机301与壳体209连接。图18的实施例中，第一从动盘206、第二从动盘207、第三从动盘208沿轴向分布。图19的实施例中，第一从动盘206、第二从动盘207、第三从动盘208沿径向分布。Referring to the embodiment of Figures 18-19, one major difference between the power drive system 1000 of this embodiment and the power drive system 1000 of the embodiment of Figures 10-17 is the number of input shafts. In these embodiments, the input shaft includes a first input shaft 101, a second input shaft 102, and a third input shaft 1003. The third input shaft 1003 can be a hollow shaft and sleeved on the second input shaft 102, the second input. The shaft 102 can also be a hollow shaft and sleeved on the first input shaft 101, and the three input shafts can be coaxially arranged. The engine 301 is coupled to the first input shaft 101, the second input shaft 102, and the third input shaft 1003 via a three clutch 205. Specifically, the three clutch 205 has a first driven disc 206, a second driven disc 207, a third driven disc 208, and a housing 209, and the housing 209 is selectively engageable with the first driven disc 206, the second At least one of the driven disc 207 and the third driven disc 208 is engaged, the first input shaft 101 is coupled to the first driven disc 206, and the second input shaft 102 is coupled to the second driven disc 207. The third input shaft 1003 Connected to the third driven disk 208, the engine 301 is coupled to the housing 209. In the embodiment of Fig. 18, the first driven disk 206, the second driven disk 207, and the third driven disk 208 are distributed in the axial direction. In the embodiment of Fig. 19, the first driven disk 206, the second driven disk 207, and the third driven disk 208 are distributed in the radial direction.
下面结合图10简单描述根据本发明实施例的动力驱动***1000的典型工况。A typical operating condition of the power drive system 1000 according to an embodiment of the present invention will be briefly described below with reference to FIG.
例如，第一接合部分201与第三接合部分203接合，第二接合部分202与第三接合部分203断开，同步器109处于接合状态，此时发动机301产生的动力通过第一输入轴101、动力输出轴103后输出至差速器100，由差速器100将动力分配给两侧的驱动轮。For example, the first engaging portion 201 is engaged with the third engaging portion 203, the second engaging portion 202 is disconnected from the third engaging portion 203, and the synchronizer 109 is in an engaged state, at which time the power generated by the engine 301 passes through the first input shaft 101, The power take-off shaft 103 is then output to the differential 100, and the differential 100 distributes the power to the drive wheels on both sides.
又如，第二接合部分202与第三接合部分203接合，第一接合部分201与第三接合部分203断开，同步器109处于断开状态，此时发动机301产生的动力通过第二输入轴102、动力输出轴103后输出至差速器100，由差速器100将动力分配给两侧的驱动轮。For another example, the second engaging portion 202 is engaged with the third engaging portion 203, the first engaging portion 201 is disconnected from the third engaging portion 203, and the synchronizer 109 is in an open state, at which time the power generated by the engine 301 passes through the second input shaft. 102. The power output shaft 103 is output to the differential 100, and the differential 100 distributes the power to the drive wheels on both sides.
再如，双离合器204全部断开，同步器109处于接合状态，第一电动发电机401产生的动力通过第一输入轴101、动力输出轴103后输出至差速器100，由差速器100将动力分 配给两侧的驱动轮。For example, the dual clutch 204 is completely disconnected, the synchronizer 109 is in the engaged state, and the power generated by the first motor generator 401 is output to the differential 100 through the first input shaft 101 and the power output shaft 103, and the differential 100 is received by the differential 100. Power division The drive wheels on both sides are assigned.
再如，第一接合部分201与第三接合部分203接合，第二接合部分202与第三接合部分203断开，同步器109处于断开状态，此时发动机301产生的动力通过第一输入轴101输出至第一电动发电机401，驱动第一电动发电机401作为电动机进行发电，实现驻车发电功能。For another example, the first engaging portion 201 is engaged with the third engaging portion 203, the second engaging portion 202 is disconnected from the third engaging portion 203, and the synchronizer 109 is in an open state, at which time the power generated by the engine 301 passes through the first input shaft. The 101 is output to the first motor generator 401, and drives the first motor generator 401 to generate electric power as an electric motor to realize a parking power generation function.
图11实施例与图10实施例的主要区别在于第一电动发电机401与第二输入轴102联动，而图10实施例则为第一电动发电机401与第一输入轴101联动，对于其余部分则不再赘述。The main difference between the embodiment of FIG. 11 and the embodiment of FIG. 10 is that the first motor generator 401 is interlocked with the second input shaft 102, and the embodiment of FIG. 10 is that the first motor generator 401 is linked with the first input shaft 101. Some will not go into details.
对于图12-图15的实施例，与图10实施例相比，区别在于增加了后驱差速锁。For the embodiment of Figures 12-15, the difference compared to the embodiment of Figure 10 is the addition of a rear differential lock.
参照图12-图15并结合图1-图9所示，第一齿圈13与左前轮910a联动，如第一齿圈13与左前轮910a同轴相连，第二齿圈23与右前轮910b联动，如第二齿圈23与右前轮910b同轴相连。第四电动发电机901通过齿轮结构与左后轮910c联动，如第四电动发电机901通过齿轮W1、W2、W3、W4与左后轮910c联动，齿轮W1与第四电动发电机901同轴相连，齿轮W1与齿轮W2啮合，齿轮W2与齿轮W3同轴相连，齿轮W3与齿轮W4啮合，齿轮W4可固定设置于左半轴904上，左半轴904上设置有左后轮910c。类似地，第五电动发电机902通过齿轮结构与右后轮910d联动，如第五电动发电机902通过齿轮X1、X2、X3、X4与右后轮910d联动，齿轮X1与第五电动发电机902同轴相连，齿轮X1与齿轮X2啮合，齿轮X2与齿轮X3同轴相连，齿轮X3与齿轮X4啮合，齿轮X4可固定设置于右半轴905上，右半轴905上设置有右后轮910d。Referring to Figures 12-15, in conjunction with Figures 1-9, the first ring gear 13 is coupled to the left front wheel 910a, such as the first ring gear 13 is coaxially coupled to the left front wheel 910a, and the second ring gear 23 is right. The front wheel 910b is interlocked, for example, the second ring gear 23 is coaxially connected with the right front wheel 910b. The fourth motor generator 901 is interlocked with the left rear wheel 910c through a gear structure. For example, the fourth motor generator 901 is interlocked with the left rear wheel 910c via the gears W1, W2, W3, and W4, and the gear W1 is coaxial with the fourth motor generator 901. Connected, the gear W1 meshes with the gear W2, the gear W2 is coaxially coupled to the gear W3, the gear W3 meshes with the gear W4, the gear W4 can be fixedly disposed on the left half shaft 904, and the left rear axle 910c is disposed on the left half shaft 904. Similarly, the fifth motor generator 902 is interlocked with the right rear wheel 910d through a gear structure, such as the fifth motor generator 902 is coupled with the right rear wheel 910d through the gears X1, X2, X3, X4, the gear X1 and the fifth motor generator The 902 is coaxially connected, the gear X1 is meshed with the gear X2, the gear X2 is coaxially connected with the gear X3, the gear X3 is meshed with the gear X4, the gear X4 is fixedly disposed on the right half shaft 905, and the right rear wheel is provided on the right half shaft 905. 910d.
在图12的示例中，防滑同步器903设置成用于同步齿轮W4与齿轮X4，例如防滑同步器903设置在齿轮W4上且用于接合齿轮X4。在图13的示例中，防滑同步器903设置成用于同步齿轮W1与齿轮X1，例如防滑同步器903设置在齿轮W1上且用于接合齿轮X1。在图14的示例中，防滑同步器903设置成用于同步齿轮W2与齿轮X2，例如防滑同步器903设置在齿轮W2上且用于接合齿轮X2。In the example of FIG. 12, the anti-skid synchronizer 903 is provided for the synchronizing gear W4 and the gear X4, for example, the anti-skid synchronizer 903 is disposed on the gear W4 and is used to engage the gear X4. In the example of FIG. 13, the anti-skid synchronizer 903 is provided for the synchronizing gear W1 and the gear X1, for example, the anti-skid synchronizer 903 is disposed on the gear W1 and is used to engage the gear X1. In the example of FIG. 14, the anti-skid synchronizer 903 is provided for the synchronizing gear W2 and the gear X2, for example, the anti-skid synchronizer 903 is disposed on the gear W2 and is used to engage the gear X2.
在图15的示例中，防滑同步器903设置成用于同步左半轴904与右半轴905，如防滑同步器903设置在左半轴904上且用于接合右半轴905，该实施例中第四电动发电机901和第五电动发电机902均为轮边电机。In the example of FIG. 15, the anti-skid synchronizer 903 is configured to synchronize the left and right axles 904, 905, such as the anti-skid synchronizer 903, on the left axle 904 and for engaging the right axle 905, this embodiment The fourth fourth motor generator 901 and the fifth motor generator 902 are both wheel motors.
综上，防滑同步器903设置成可选择性地同步左后轮910c和右后轮910d，换言之，在防滑同步器903处于接合状态时，左后轮910c和右后轮910d将同步旋转，即同速、同向旋转，此时左后轮910c和右后轮910d不会差速转动。而在防滑同步器903处于断开状态时，第四电动发电机901可单独驱动左后轮910c，第五电动发电机902可单独驱动右后轮910d，两个后轮相互独立、互不干涉，从而实现车轮的差速转动功能。 In summary, the anti-skid synchronizer 903 is arranged to selectively synchronize the left rear wheel 910c and the right rear wheel 910d, in other words, when the anti-slip synchronizer 903 is in the engaged state, the left rear wheel 910c and the right rear wheel 910d will rotate synchronously, ie At the same speed and in the same direction, the left rear wheel 910c and the right rear wheel 910d do not rotate at a differential speed. When the anti-skid synchronizer 903 is in the off state, the fourth motor generator 901 can separately drive the left rear wheel 910c, and the fifth motor generator 902 can separately drive the right rear wheel 910d, and the two rear wheels are independent of each other and do not interfere with each other. In order to achieve the differential rotation function of the wheel.
此外，对于上述各实施例中描述的技术方案和/或技术特征，在不相互冲突、不相互矛盾的情况下，本领域技术人员能够将上述实施例中的技术方案和/或技术特征进行相互组合，组合后的技术方案可以是两个或两个以上技术方案的叠加、两个或两个以上技术特征的叠加或者两个或两个以上的技术方案与技术特征的叠加，由此能够实现各技术方案和/或技术特征彼此在功能上的相互作用和支持，并且组合后的方案具有更优越的技术效果。In addition, for the technical solutions and/or technical features described in the foregoing embodiments, those skilled in the art can perform the technical solutions and/or technical features in the foregoing embodiments with each other without conflicting or contradicting each other. The combined technical solution may be a superposition of two or more technical solutions, a superposition of two or more technical features or a superposition of two or more technical solutions and technical features, thereby enabling The technical solutions and/or technical features interact and support each other functionally, and the combined solution has a superior technical effect.
例如，本领域技术人员可将第一行星轮12与第二行星轮22部分重叠的方案与第一行星架11和第二行星架21为板状结构的方案组合，这样可以有效减少差速器100的轴向尺寸，从而使差速器100的体积更小。For example, a person skilled in the art can partially overlap the first planet gear 12 and the second planet gear 22 with a scheme in which the first planet carrier 11 and the second planet carrier 21 are plate-shaped structures, which can effectively reduce the differential. The axial dimension of 100 makes the differential 100 smaller.
又如，本领域技术人员可将第一行星轮12与第二行星轮22部分重叠的方案与行星轮以及行星架收纳在安装空间内的方案组合，这样不仅可以有效减少差速器100的轴向尺寸，而且还能使行星轮和行星架隐藏在安装空间内而避免暴漏在外面受损，从而增加了使用寿命，降低了维护成本。For another example, a person skilled in the art can combine the scheme in which the first planetary gear 12 and the second planetary gear 22 partially overlap with the solution in which the planetary gear and the carrier are housed in the installation space, so that the shaft of the differential 100 can be effectively reduced. Dimensional, but also allows the planet wheels and planet carrier to be hidden in the installation space to avoid damage to the outside, which increases the service life and reduces maintenance costs.
再如，本领域技术人员可将第一行星轮12的公转轴线与第二行星轮22的公转轴线重合的方案与第一行星轮12的公转半径与第二行星轮22的公转半径相同的方案组合，这样使得差速器100的结构更加紧凑、占用体积更小、更便于布置。For another example, a person skilled in the art may adjust the revolving axis of the first planet gear 12 to the revolving axis of the second planet gear 22 and the revolving radius of the first planet gear 12 to be the same as the revolving radius of the second planet gear 22 . The combination makes the structure of the differential 100 more compact, smaller in size, and easier to arrange.
再如，本领域技术人员可将输入部3构造为环形输入端齿轮且套在第一齿圈13和第二齿圈23的外周面的方案与输入端齿轮3为主减速器从动齿轮的方案进行组合，由此差速器100可以更好地利用主减从动齿轮内部中空的空间，实现更好地空间利用率，极大地方便了差速器总成的整车布置以及对重量大小的限制，而且通过将输入部3直接设置为环形的主减速器从动齿轮，不用单独再设置主减速器从动齿轮，由此不仅可以减少整个动力驱动***的零部件，降低成本，而且还使差速器100的结构更加的紧凑、小巧。For example, a person skilled in the art can configure the input portion 3 as an annular input end gear and fit on the outer circumferential surface of the first ring gear 13 and the second ring gear 23 and the input end gear 3 as the driven gear of the main reducer. The solution is combined, whereby the differential 100 can better utilize the hollow space inside the main reduction driven gear, thereby achieving better space utilization, greatly facilitating the overall vehicle layout of the differential assembly and the weight. The limitation, and by directly setting the input portion 3 as a ring-shaped final drive driven gear, it is not necessary to separately set the final drive driven gear, thereby not only reducing the parts of the entire power drive system, but also reducing the cost, and also The structure of the differential 100 is made more compact and compact.
再如，本领域技术人员可将输入部3构造为环形输入端齿轮与输入端齿轮3环绕并遮盖间隙的方案组合，这样一方面使得差速器100的结构相对紧凑，而且通过输入端齿轮3遮盖间隙，还能使两行星轮系的壳体限定出的安装空间相对更加密闭，充分保护安装空间内部的部件，提高其使用寿命。For example, a person skilled in the art can configure the input part 3 as a combination of the annular input end gear and the input end gear 3 to surround and cover the gap, so that on the one hand, the structure of the differential 100 is relatively compact, and the gear 3 is input through the input end. The cover gap can also make the installation space defined by the shells of the two planetary gear trains relatively more closed, fully protecting the components inside the installation space and improving the service life thereof.
当然，应当理解的是，上述的示例说明仅是示意性的，对于技术方案和/或技术特征的组合，本领域技术人员能够在不冲突的情况下进行自由组合，并且组合后的方案具备更优越的技术效果，本发明仅作了上述多个示例的简单说明，在此不再一一穷举。Of course, it should be understood that the above-described exemplary descriptions are merely illustrative, and for a combination of technical solutions and/or technical features, those skilled in the art can freely combine without conflict, and the combined solutions have more The superior technical effect, the present invention has only been briefly described in the above several examples, and is not exhaustive here.
另外，可以理解的是，上述组合后的技术方案同样落入本发明的保护范围之内。In addition, it is to be understood that the above-described combined technical solutions are also within the scope of the present invention.
整体而言，根据本发明实施例的差速器100，能够有效节省空间，且降低了重量，具体而言，这种行星齿轮式差速器100相比传统锥齿轮式差速器而言，重量可以减少大约30％，同时轴向尺寸大约减少70％，不仅能够降低轴承的摩擦力，而且能够实现左右车轮的扭矩 分配，使差速器100的载荷分布更加合理，差速器100刚性更好，此外由于采用圆柱齿轮，传动效率也得到一定提高，例如6级精度和7级精度的传统圆锥齿轮传动效率约为0.97～0.98，而6级精度和7级精度的圆柱齿轮传动效率约为0.98～0.99，此外采用圆柱齿轮，还降低了差速器100的工作噪音，同时降低了发热量，大大提高了差速器100的寿命。简言之，根据本发明实施例的差速器100具有轻量化、小尺寸、成本低、传动效率高、噪音低、发热小、寿命高等诸多优点。In general, the differential 100 according to an embodiment of the present invention can effectively save space and reduce weight. Specifically, the planetary gear differential 100 is compared to a conventional bevel gear differential. The weight can be reduced by about 30%, while the axial dimension is reduced by about 70%, which not only reduces the friction of the bearing, but also achieves the torque of the left and right wheels. The distribution makes the load distribution of the differential 100 more reasonable, the differential 100 is more rigid, and the transmission efficiency is also improved due to the use of the spur gear, for example, the efficiency of the conventional bevel gear transmission of the 6-level precision and the 7-level precision is about 0.97～0.98, and the efficiency of spur gear transmission with 6-level accuracy and 7-level precision is about 0.98-0.99. In addition, the cylindrical gear reduces the working noise of the differential 100, reduces the heat generation, and greatly improves the differential speed. The life of the device 100. In short, the differential 100 according to the embodiment of the present invention has many advantages such as light weight, small size, low cost, high transmission efficiency, low noise, low heat generation, and high life.
同时，由于根据本发明实施例的差速器100可以省去太阳轮，而省去太阳轮可以具有如下优点：Meanwhile, since the differential 100 according to the embodiment of the present invention can omit the sun gear, the elimination of the sun gear can have the following advantages:
从力学上分析，应当取消太阳轮而是利用齿圈实现差速，因为齿圈的齿数相比太阳轮可以设置的更多，同时节圆较大(节圆指的是齿轮啮合传动时在节点处相切的一对圆)，从而可以更均衡的分布载荷和承受力矩，这对差速器100的寿命的提高是有好处的。同时没有太阳轮，可以更好的实现差速器100的润滑和冷却，也就是说，由于取消了太阳轮，因此齿圈里面可以形成空腔，而齿圈与行星轮啮合是属于内啮合的关系(太阳轮与行星轮属于外啮合)，齿圈内可以储藏润滑油，由此冷却和润滑效果会大大提高。另外，由于取消太阳轮，减少了零部件，降低了差速器100的质量和成本，使差速器100变得更加小型化、轻量化。From the mechanical analysis, the sun gear should be canceled instead of using the ring gear to achieve the differential speed, because the number of teeth of the ring gear can be set more than the sun gear, and the pitch circle is larger (the pitch circle refers to the node at the gear meshing transmission). A pair of tangent circles are tangential, so that the load and the withstand torque can be distributed more evenly, which is advantageous for the improvement of the life of the differential 100. At the same time, there is no sun wheel, and the lubrication and cooling of the differential 100 can be better realized. That is to say, since the sun gear is eliminated, a cavity can be formed inside the ring gear, and the ring gear meshes with the planetary gear to belong to the inner mesh. The relationship (the sun gear and the planet gear are externally meshed), the lubricating oil can be stored in the ring gear, and the cooling and lubrication effect is greatly improved. In addition, since the sun gear is eliminated, the components are reduced, the quality and cost of the differential 100 are reduced, and the differential 100 is further reduced in size and weight.
而对于具有根据本发明实施例的差速器100的动力驱动***1000而言，其主要在空间上以及驱动方式上具有较明显的优势，以空间优势为例，该动力驱动***1000特别适用于新能源车辆，由于新能源车辆的动力总成一般布置在发动机舱内，动力总成不仅具有变速器、发动机、同时还具有至少一个电机，由于发动机舱空间有限，因此采用根据本发明实施例的紧凑型差速器100能够在空间上获得优势，更加便于布置。又如，以驱动方式上的优势为例，由于根据本发明实施例的差速器100的轴向尺寸大大减少，因此轴向空间更好布置，而且差速器100具有两个齿圈作为动力输出端可以更好地实现与两个电机的动力连接(如上面介绍的通过齿圈的外齿连接电机)，而这在传统圆锥差速器上是难以实现的。For the power drive system 1000 having the differential 100 according to the embodiment of the present invention, it has obvious advantages mainly in space and in the drive mode. Taking the space advantage as an example, the power drive system 1000 is particularly suitable for In a new energy vehicle, since the powertrain of the new energy vehicle is generally disposed in the engine compartment, the powertrain not only has a transmission, an engine, but also at least one electric motor, and adopts a compact according to an embodiment of the present invention due to limited space in the engine compartment. The differential 100 is capable of gaining an advantage in space and is more convenient to arrange. For another example, taking the advantage of the driving mode as an example, since the axial dimension of the differential 100 according to the embodiment of the present invention is greatly reduced, the axial space is better arranged, and the differential 100 has two ring gears as power. The output can better achieve a power connection to the two motors (as described above for connecting the motor through the external gear of the ring gear), which is difficult to achieve on conventional conical differentials.
下面简单描述根据本发明实施例的车辆10000，如图20所示，该车辆10000包括上述实施例中的动力驱动***1000，该动力驱动***1000可以用于前驱，当然也可以用于后驱，本发明对此不作特殊限定。应当理解的是，根据本发明实施例的车辆10000的其它构造例如制动***、行驶***、转向***等均已为现有技术，且为本领域技术人员所熟知，因此这里不再一一赘述。A vehicle 10000 according to an embodiment of the present invention will be briefly described below. As shown in FIG. 20, the vehicle 10000 includes the power drive system 1000 in the above embodiment, and the power drive system 1000 can be used for a front drive, and of course, for a rear drive. The present invention is not particularly limited thereto. It should be understood that other configurations of the vehicle 10000, such as the brake system, the travel system, the steering system, and the like, according to embodiments of the present invention are known in the art and are well known to those skilled in the art, and therefore will not be described herein. .
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述 不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。此外，本领域的技术人员可以将本说明书中描述的不同实施例或示例进行接合和组合。In the description of the present specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like means a specific feature described in connection with the embodiment or example. A structure, material or feature is included in at least one embodiment or example of the invention. In this specification, a schematic representation of the above terms It is not necessary to be directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Further, various embodiments or examples described in this specification can be joined and combined by those skilled in the art.
尽管上面已经示出和描述了本发明的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本发明的限制，本领域的普通技术人员在本发明的范围内可以对上述实施例进行变化、修改、替换和变型。 Although the embodiments of the present invention have been shown and described, it is understood that the above-described embodiments are illustrative and are not to be construed as limiting the scope of the invention. The embodiments are subject to variations, modifications, substitutions and variations.

Claims (20)

  1. 一种动力驱动***，其特征在于，包括：A power drive system, comprising:
    差速器，所述差速器包括：a differential, the differential comprising:
    第一行星架、第一行星轮和第一齿圈，所述第一行星轮与所述第一行星架连接，所述第一行星轮与所述第一齿圈啮合；a first planet carrier, a first planet gear, and a first ring gear, the first planet gear being coupled to the first planet carrier, the first planet gear meshing with the first ring gear;
    第二行星架、第二行星轮和第二齿圈，所述第二行星轮与所述第二行星架连接，所述第二行星轮与所述第二齿圈啮合且所述第二行星轮还与所述第一行星轮啮合，其中，所述第一齿圈和所述第二齿圈构成所述差速器的两个动力输出端；a second planet carrier, a second planet gear and a second ring gear, the second planet gear being coupled to the second planet carrier, the second planet gear meshing with the second ring gear and the second planet The wheel is also meshed with the first planet gear, wherein the first ring gear and the second ring gear constitute two power output ends of the differential;
    输入部，所述输入部、所述第一行星架和所述第二行星架同轴布置且所述输入部分别与所述第一行星架和所述第二行星架联动；An input portion, the input portion, the first planet carrier and the second planet carrier are coaxially arranged and the input portion is respectively associated with the first planet carrier and the second planet carrier;
    动力输出轴，所述动力输出轴设置成与所述输入部联动；a power output shaft, the power output shaft is disposed to be linked with the input portion;
    多个输入轴，所述多个输入轴中一个输入轴设置成可选择性地与所述动力输出轴联动，所述多个输入轴中的其余输入轴设置成与所述动力输出轴联动；以及a plurality of input shafts, one of the plurality of input shafts being disposed to be selectively engageable with the power output shaft, and the remaining ones of the plurality of input shafts are disposed to be coupled with the power output shaft; as well as
    第一电动发电机，所述第一电动发电机设置成与所述多个输入轴中的所述一个输入轴联动。a first motor generator, the first motor generator being disposed in linkage with the one of the plurality of input shafts.
  2. 根据权利要求1所述的动力驱动***，其特征在于，所述第一行星轮与所述第二行星轮在轴向上部分重叠。The power drive system of claim 1 wherein said first planet gear and said second planet gear partially overlap in an axial direction.
  3. 根据权利要求2所述的动力驱动***，其特征在于，所述第一行星轮包括：第一齿部和第二齿部，所述第二行星轮包括：第三齿部和第四齿部，所述第一齿部与所述第一齿圈啮合，所述第二齿部与所述第三齿部在所述轴向上重叠且啮合配合，所述第四齿部与所述第二齿圈啮合。The power drive system according to claim 2, wherein the first planetary gear comprises: a first tooth portion and a second tooth portion, the second planet gear comprising: a third tooth portion and a fourth tooth portion The first tooth portion is engaged with the first ring gear, the second tooth portion and the third tooth portion are overlapped and engaged in the axial direction, and the fourth tooth portion and the fourth tooth portion The two ring gears mesh.
  4. 根据权利要求1-3中任一项所述的动力驱动***，其特征在于，所述第一齿圈和所述第二齿圈对称设置，所述第一齿圈和所述第二齿圈中的每一个均包括：The power drive system according to any one of claims 1 to 3, wherein the first ring gear and the second ring gear are symmetrically disposed, the first ring gear and the second ring gear Each of them includes:
    主体平板部和设置在所述主体平板部的外周沿的环形侧壁部，所述环形侧壁部的内壁面上设置有多个齿，所述主体平板部与所述环形侧壁部之间限定出空腔，所述第一齿圈的空腔和所述第二齿圈的空腔朝向彼此以构成安装空间，所述第一行星架和所述第一行星轮以及所述第二行星架和所述第二行星轮收纳在所述安装空间内。a main body flat portion and an annular side wall portion provided at an outer peripheral edge of the main body flat portion, the inner wall surface of the annular side wall portion is provided with a plurality of teeth, and between the main body flat portion and the annular side wall portion Defining a cavity, the cavity of the first ring gear and the cavity of the second ring gear facing each other to constitute an installation space, the first planet carrier and the first planet gear and the second planet The frame and the second planet gear are housed in the installation space.
  5. 根据权利要求1-4中任一项所述的动力驱动***，其特征在于，所述输入部构造为输入端齿轮，所述输入端齿轮构造为环形且套设在所述第一齿圈和所述第二齿圈外表面。The power drive system according to any one of claims 1 to 4, wherein the input portion is configured as an input end gear, and the input end gear is configured to be annular and sleeved on the first ring gear and The outer surface of the second ring gear.
  6. 根据权利要求5所述的动力驱动***，其特征在于，所述第一齿圈与所述第二齿圈之间设置有间隙，所述输入端齿轮环绕并遮盖所述间隙。The power drive system according to claim 5, wherein a gap is provided between the first ring gear and the second ring gear, and the input end gear surrounds and covers the gap.
  7. 根据权利要求1-6中任一项所述的动力驱动***，其特征在于，还包括：中间连接 结构，所述中间连接结构用于将所述第一行星架、所述第二行星架连接至所述输入部，A power drive system according to any one of claims 1 to 6, further comprising: an intermediate connection a structure, the intermediate connection structure is configured to connect the first planet carrier and the second planet carrier to the input portion,
    所述中间连接结构包括：第一连接支架和第二连接支架，所述第一连接支架用于连接所述第一行星架与所述输入部，所述第二连接支架用于连接所述第二行星架与所述输入部，The intermediate connection structure includes: a first connection bracket for connecting the first planet carrier and the input portion, and a second connection bracket for connecting the first a second planet carrier and the input portion,
    其中所述第一连接支架和所述第二连接支架中的每一个均包括：中心本体部和多个延伸臂部，所述多个延伸臂部设置在所述中心本体部的外周面上，所述多个延伸臂部以所述中心本体部为中心且呈放射状分布，其中所述多个延伸臂部用于与所述输入部相连。Wherein each of the first connecting bracket and the second connecting bracket comprises: a central body portion and a plurality of extending arms, the plurality of extending arms being disposed on an outer circumferential surface of the central body portion, The plurality of extension arms are radially distributed around the central body portion, wherein the plurality of extension arms are for connection with the input portion.
  8. 根据权利要求1-7中任一项所述的动力驱动***，其特征在于，每个第一行星轮配置有第一行星轮轴，所述第一行星轮轴的两个端部分别与所述第一行星架和所述第二行星架相连，每个第二行星轮配置有第二行星轮轴，所述第二行星轮轴的两个端部分别与所述第一行星架和所述第二行星架相连。A power drive system according to any one of claims 1 to 7, wherein each of the first planet gears is provided with a first planetary gear shaft, and both ends of the first planetary gear shaft are respectively associated with the first a planet carrier coupled to the second planet carrier, each second planet gear being configured with a second planet gear axle, the two ends of the second planet gear axle being respectively associated with the first planet carrier and the second planet The shelves are connected.
  9. 根据权利要求1-8中任一项所述的动力驱动***，其特征在于，所述第一行星轮的公转半径与所述第二行星轮的公转半径相同。A power drive system according to any one of claims 1-8, wherein the revolution radius of the first planet gear is the same as the revolution radius of the second planet gear.
  10. 根据权利要求1-9中任一项所述的动力驱动***，其特征在于，还包括：发动机，所述发动机设置成可选择性地接合所述多个输入轴中的至少一个。A power drive system according to any one of claims 1-9, further comprising: an engine arranged to selectively engage at least one of the plurality of input shafts.
  11. 根据权利要求1-10中任一项所述的动力驱动***，其特征在于，所述动力输出轴上设置有输出齿轮，所述输出齿轮与所述输入部啮合传动。The power drive system according to any one of claims 1 to 10, characterized in that the power output shaft is provided with an output gear, and the output gear is meshed with the input portion.
  12. 根据权利要求1-11中任一项所述的动力驱动***，其特征在于，所述动力输出轴上空套设置有空套从动齿轮，所述空套从动齿轮与所述多个输入中轴的所述一个输入轴联动，The power drive system according to any one of claims 1 to 11, wherein the power take-off shaft is provided with an idler driven gear, the idler driven gear and the plurality of inputs. The one input shaft of the shaft is linked,
    所述动力驱动***还包括同步器，所述同步器设置成用于同步所述动力输出轴与所述空套从动齿轮。The power drive system also includes a synchronizer configured to synchronize the power take off shaft with the idler driven gear.
  13. 根据权利要求12所述的动力驱动***，其特征在于，所述同步器设置在所述动力输出轴上且用于接合所述空套从动齿轮。The power drive system of claim 12 wherein said synchronizer is disposed on said power take-off shaft and for engaging said idler driven gear.
  14. 根据权利要求13所述的动力驱动***，其特征在于，所述动力输出轴上固定设置有固定从动齿轮，所述固定从动齿轮与所述多个输入轴中的所述其余输入轴联动。The power drive system according to claim 13, wherein the power output shaft is fixedly provided with a fixed driven gear, and the fixed driven gear is linked with the remaining ones of the plurality of input shafts. .
  15. 根据权利要求1-11中任一项所述的动力驱动***，其特征在于，所述动力输出轴上空套设置有空套从动齿轮以及固定设置有固定从动齿轮，所述动力驱动***还包括同步器，所述同步器设置成用于同步所述动力输出轴与所述空套从动齿轮；The power drive system according to any one of claims 1 to 11, wherein the power output shaft is provided with an idler driven gear and a fixed driven gear fixedly, and the power drive system is further provided. A synchronizer is provided, the synchronizer being configured to synchronize the power take-off shaft with the idler driven gear;
    每个输入轴上固定设置有固定主动齿轮，所述空套从动齿轮和所述固定从动齿轮分别与对应的固定主动齿轮啮合。A fixed driving gear is fixedly disposed on each input shaft, and the idler driven gear and the fixed driven gear respectively mesh with corresponding fixed driving gears.
  16. 根据权利要求1-15中任一项所述的动力驱动***，其特征在于，还包括：The power drive system according to any one of claims 1 to 15, further comprising:
    第二电动发电机和第三电动发电机，所述第二电动发电机与所述第一齿圈联动，所述 第三电动发电机与所述第二齿圈联动。a second motor generator and a third motor generator, the second motor generator being associated with the first ring gear, The third motor generator is coupled to the second ring gear.
  17. 根据权利要求16所述的动力驱动***，其特征在于，所述第一齿圈的外周面上设置有第一外齿，所述第二齿圈的外周面上设置有第二外齿，所述第二电动发电机与所述第一外齿联动，所述第三电动发电机与所述第二外齿联动。The power drive system according to claim 16, wherein a first outer tooth is disposed on an outer circumferential surface of the first ring gear, and a second outer tooth is disposed on an outer circumferential surface of the second ring gear. The second motor generator is coupled to the first external tooth, and the third motor generator is coupled to the second external tooth.
  18. 根据权利要求1-17中任一项所述的动力驱动***，其特征在于，所述多个输入轴包括第一输入轴、第二输入轴和第三输入轴，所述第三输入轴套设在所述第二输入轴上，所述第二输入轴套设在所述第一输入轴上，所述发动机与所述第一输入轴、所述第二输入轴和所述第三输入轴之间通过三离合器相连。A power drive system according to any one of claims 1 to 17, wherein the plurality of input shafts comprise a first input shaft, a second input shaft and a third input shaft, the third input sleeve Provided on the second input shaft, the second input shaft is sleeved on the first input shaft, the engine and the first input shaft, the second input shaft and the third input The shafts are connected by a three clutch.
  19. 根据权利要求1-18中任一项所述的动力驱动***，其特征在于，所述第一齿圈与左前轮联动，所述第二齿圈与右前轮联动；The power drive system according to any one of claims 1 to 18, wherein the first ring gear is linked with the left front wheel, and the second ring gear is linked with the right front wheel;
    所述动力驱动***还包括：The power drive system further includes:
    第四电动发电机和第五电动发电机，所述第四电动发电机与左后轮联动，所述第五电动发电机与右后轮联动；以及a fourth motor generator and a fifth motor generator, the fourth motor generator is linked to the left rear wheel, and the fifth motor generator is linked to the right rear wheel;
    防滑同步器，所述防滑同步器设置成可选择性地同步所述左后轮和右后轮，从而使得所述左后轮和所述右后轮同步旋转。A non-slip synchronizer configured to selectively synchronize the left rear wheel and the right rear wheel such that the left rear wheel and the right rear wheel rotate in synchronization.
  20. 一种车辆，其特征在于，包括根据权利要求1-19中任一项所述的动力驱动***。 A vehicle characterized by comprising the power drive system according to any one of claims 1-19.
PCT/CN2016/097695 2015-09-25 2016-08-31 Power driving system and vehicle having same WO2017050101A1 (en)

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