CN109987193A - Transmission device, driving device and the electric vehicle with driving device - Google Patents
Transmission device, driving device and the electric vehicle with driving device Download PDFInfo
- Publication number
- CN109987193A CN109987193A CN201711481680.3A CN201711481680A CN109987193A CN 109987193 A CN109987193 A CN 109987193A CN 201711481680 A CN201711481680 A CN 201711481680A CN 109987193 A CN109987193 A CN 109987193A
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- China
- Prior art keywords
- gear
- planetary gear
- transmission device
- clutch
- electric vehicle
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- Legal status (The legal status 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 status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M11/00—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels
- B62M11/04—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio
- B62M11/14—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio with planetary gears
- B62M11/16—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio with planetary gears built in, or adjacent to, the ground-wheel hub
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M11/00—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels
- B62M11/04—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio
- B62M11/14—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio with planetary gears
- B62M11/18—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio with planetary gears with a plurality of planetary gear units
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M7/00—Motorcycles characterised by position of motor or engine
- B62M7/12—Motorcycles characterised by position of motor or engine with the engine beside or within the driven wheel
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Retarders (AREA)
Abstract
This application involves for the transmission device of electric vehicle, driving device and with the electric vehicle of driving device.Transmission device includes: sun gear；Planetary gear set, including first planet carrier cover board, the second planet carrier cover board, at least two planetary gear shafts for being fixedly connected with first planet carrier cover board and the second planet carrier cover board and at least two planetary gears for being rotatably socketed at least two planetary gear shafts and being evenly arranged on around sun gear, wherein at least two planetary gear each include can coaxial rotating, the mafor planet gear and small planetary gear that are fixed together, and mafor planet gear is engaged with sun gear；First gear ring has internal tooth, engages at least two planetary gear mafor planet gears；And second gear ring, there is internal tooth, engaged at least two planetary gear small planetary gears.
Description
Technical field
This application involves electric vehicles, in particular to transmission device, driving device and with the electronic of driving device
Vehicle.
Background technique
So far, electric vehicle, especially electric motor car with two wheels have been vigorously developed the more than ten years, and market maintenance is on 200,000,000 left sides
The right side, but still have very big market potential.
In more mountainous region areas, the ownership of electric motor car with two wheels is still less than two-wheeled motor vehicle, this is because current two-wheeled
The torque and mileages of continuation of the straight drive wheel hub electric motor of electric vehicle cannot even meet these regional users on mountainous region road well
Actual demand in section.
Electric motor car with two wheels wheel hub electric motor on the market is broadly divided into two major classes at present, the straight motor and electronic with tooth of driving
Machine.
Straight the shortcomings that driving motor is that volume is big, and output torque is small, and climbing is painstaking and energy consumption is big, meets heavy load and is easy to burn
It is bad；Band tooth motor then just on the contrary, feature be it is small in size, torque is big, climbs laborsaving and energy saving good, does not also just allow easy burn-out electric
Motivation.
Band gear hub motor can be divided into fixed deceleration wheel hub electric motor and with tooth speed-variating hub motor again.It is fixed to slow down
Wheel hub electric motor, nominal torque and best efficiency point are all in climbing process, so the efficiency in flat pavement running is relatively low, energy consumption is inclined
Height influences mileages of continuation；Band tooth variable-speed motor, can switch multiple gears, different gears may be selected in different road conditions,
Guarantee that motor operates always in high-effect section, regardless of (efficiency is flat in level road (Forward of efficiency platform), or in climbing section
Platform moves back), energy consumption can be controlled, and mileages of continuation is increased.
Summary of the invention
The application technical problems to be solved are to provide one kind and are suitble to use in more mountainous region areas with the small torsion of level land high speed
Square is run with the gear assembly of mountainous region low-speed big operation, the driving device with gear assembly and with driving
The electric vehicle of device.
In order to solve the above-mentioned technical problem, according to the one aspect of the application, a kind of transmission for electric vehicle is provided
Device comprising: sun gear；Planetary gear set, including first planet carrier cover board, the second planet carrier cover board, be fixedly connected
At least two planetary gear shafts of first planet carrier cover board and the second planet carrier cover board and rotatably it is socketed at least two
In planetary gear shaft and at least two planetary gears that are evenly arranged on around sun gear, wherein at least two planetary gear are each
It is a include can coaxial rotating, the mafor planet gear and small planetary gear that are fixed together, and mafor planet gear with too
Positive gear engagement；First gear ring has internal tooth, engages at least two planetary gear mafor planet gears；And second gear ring,
With internal tooth, engaged at least two planetary gear small planetary gears.
According to an embodiment of the present application, transmission device, which may also include, is arranged at least two planetary gears and at least two rows
A pair of bearings between star gear shaft.
According to an embodiment of the present application, at least two planetary gears can be 2 to 8 planetary gears, preferably 3 or 4
Planetary gear.
According to an embodiment of the present application, transmission device may also include first clutch, when the first gear ring in a first direction
When having rotation trend, first clutch limits the rotation of the first gear ring in a first direction；When the first gear ring in a second direction
When rotation, first clutch is detached from cooperation with it.
According to an embodiment of the present application, transmission device may also include second clutch, when planetary gear set is in first party
When having rotation trend upwards, the rotation of second clutch restrictions planetary gear component in a first direction；Work as planetary gear set
When rotating in a second direction, second clutch is detached from cooperation with it.
According to an embodiment of the present application, mafor planet gear and small planetary gear are formed as entirety.Alternatively, mafor planet gear
It can be formed separately with small planetary gear, and therebetween may include key and keyway connecting the two.
According to an embodiment of the present application, first clutch can for unilateral bearing or first clutch and the first gear ring it
Between clutch means may include that roller, pawl, buckle or elasticity hook together structure.Equally, second clutch can be unilateral bearing, or
Clutch means between person's second clutch and planetary gear set may include that roller, pawl, buckle or elasticity hook together structure.
According to further aspect of the application, a kind of driving device for electric vehicle is provided comprising above-mentioned biography
The motor of dynamic device and the sun gear for driving transmission device, wherein motor is that can rotate in positive and negative both direction
Motor, and the drive shaft of motor and sun gear are coaxially connected.
According to an embodiment of the present application, driving device may also include electricity and rub axis, and the rotor and sun gear of motor
Rubbing with the electricity may include the bearing both being rotatably connected between axis.
According to another aspect of the application, a kind of electric vehicle is provided comprising above-mentioned transmission device or above-mentioned
Driving device.
According to an embodiment of the present application, electric vehicle may also include the hub cap being fixedly connected with the second gear ring, and hub cap
It is connect with the wheel hub of electric vehicle.In addition, electric vehicle may also include end cap, wherein the wheel hub of end cap and hub cap and vehicle is formed
Accommodate the space of driving device.
It according to an embodiment of the present application, may include the bearing for being rotatably connected the two between hub cap and end cap and the electric axis that rubs.
According to an embodiment of the present application, electric vehicle may also include the oil sealing being arranged between end cap and the electric axis that rubs and set
Set the oil sealing between hub cap and the electric axis that rubs.
The application can realize following beneficial effect.
The transmission device for electric vehicle according to the application include sun gear, planetary gear set (including with too
The mafor planet gear of positive gear engagement and the small planetary gear being fixedly and coaxially connected with mafor planet gear), in mafor planet gear
The first gear ring engaged and the second gear ring with small planetary gear internal messing.Therefore, the first gear ring and planet tooth are unidirectionally being limited
In the case where the movement of wheel assembly, by sun gear rotating in positive and negative both direction, it can be achieved that two of the second gear ring
Speed output.The driving according to the application is formed according to the combination of the transmission device of the embodiment of the present application and the motor of positive and negative rotation
Device.When being applied to electric vehicle according to the driving device of the application, it can be achieved that two grades of speed changes of electric vehicle, the small torsion of high speed
One gear of square is suitable for flat pavement running, and a gear of low-speed big is suitable for section of climbing.This is more mountainous region areas
The electric vehicle of urgent need.
Detailed description of the invention
Attached drawing to embodiment is simply situated between by technical solution in ord to more clearly illustrate embodiments of the present application below
It continues, it should be apparent that, the accompanying drawings in the following description merely relates to some embodiments of the present application, rather than the limitation to the application.
Fig. 1 is the decomposition perspective view for showing the transmission device according to the embodiment of the present application.
Fig. 2 is the installation diagram for showing the transmission device according to the embodiment of the present application.
Fig. 3 is the sectional view for showing driving device and electric vehicle wheel hub structure according to the embodiment of the present application.
Fig. 4 A to 4D is the schematic diagram for showing the working principle of the transmission device according to the embodiment of the present application, and wherein Fig. 4 A is
The schematic diagram of the working condition of transmission device when sun gear rotates in a first direction is shown, Fig. 4 B is to show sun gear to exist
The schematic diagram of the working condition of transmission device when second party is rotated up, Fig. 4 C are to show the second gear ring to rotate in a second direction
When transmission device working condition schematic diagram, and Fig. 4 D shows transmission device when the second gear ring rotates in a first direction
The schematic diagram of working condition.
Specific embodiment
To keep the purposes, technical schemes and advantages of the embodiment of the present application clearer, below in conjunction with the embodiment of the present application
Attached drawing, the technical solution of the embodiment of the present application is clearly and completely described.Obviously, described embodiment is this Shen
A part of the embodiment please, instead of all the embodiments.Based on described embodiments herein, ordinary skill
Personnel's all other embodiment obtained under the premise of being not necessarily to creative work, shall fall in the protection scope of this application.
Unless otherwise defined, the technical term or scientific term used herein should be in the application fields and has
The ordinary meaning that the personage of general technical ability is understood." first " used in present patent application specification and claims,
" second " and similar word are not offered as any sequence, quantity or importance, and are used only to distinguish different compositions
Part.Equally, the similar word such as "one" or " one " does not indicate that quantity limits yet, but indicates that there are at least one.
In the following, being described in conjunction with the accompanying according to an embodiment of the present application.
Fig. 1 is the decomposition perspective view for showing the transmission device according to the embodiment of the present application, and Fig. 2 is shown according to the application
The installation diagram of the transmission device of embodiment.
Referring to Fig. 1 and 2, a kind of transmission device 1 is provided according to the embodiment of the present application, transmission device 1 may include sun gear
10, planetary gear set 20, the first gear ring 30 and the second gear ring 40.
Sun gear 10 can receive the driving force for rotating it from the outside, and can be passed driving force by surrounding tooth
It is defeated to arrive planetary gear set 20.
Planetary gear set 20 may include first planet carrier cover board 21, the second planet carrier cover board 22, be fixedly connected and position
First planet carrier cover board 21 and the articulation hole screw 23 of the second planet carrier cover board 22 are fixedly connected with first planet carrier cover board 21 and
At least two planetary gear shaft (not shown) of two planet carrier cover boards 22 and rotatably it is socketed at least two planetary gears
On axis and at least two planetary gears 24 that are evenly arranged on around sun gear 10.Each of at least two planetary gears 24 can wrap
Include can coaxial rotating, the mafor planet gear 24a and small planetary gear 24b that are fixed together, and mafor planet gear 24a
It is engaged with sun gear 10.
Preferably, at least two planetary gears 24 can be 2 to 8 planetary gears, it is highly preferred that can be 3 or 4.
First gear ring 30 has internal tooth, the mafor planet gear of the internal tooth of the first gear ring 30 and at least two planetary gears 24
The outer tooth engagement of 24a.
Second gear ring 40 has internal tooth, the small planetary gear of the internal tooth of the second gear ring 40 and at least two planetary gears 24
The outer tooth engagement of 24b.
According to an embodiment of the present application, transmission device 1, which may also include, is arranged at least two planetary gears 24 and at least two
A pair of bearings 25 between a planetary gear shaft.
According to an embodiment of the present application, each of at least two planetary gear shafts can be used those skilled in the art and be easy
Any type of connection means expected.
According to an embodiment of the present application, transmission device 1 may also include first clutch 50, for example, when the first gear ring 30 exists
When having rotation trend on first direction, first clutch 50 limits the rotation of the first gear ring 30 in a first direction；When the first tooth
When circle 30 rotates in a second direction, first clutch 50 is detached from cooperation with it.But the invention is not limited thereto, but can adopt
With opposite clutch mode, for example, when the first gear ring 30 has rotation trend in a second direction, the limitation of first clutch 50 the
The rotation of one gear ring 30 in a first direction；When the first gear ring 30 rotates in a first direction, first clutch 50 is de- with it
From cooperation.For the convenience described, first clutch when only having rotation trend in a first direction to the first gear ring 30 below
50 the first gear rings 30 of limitation rotations in a first direction and first clutch 50 when the first gear ring 30 rotates in a second direction
The case where being detached from cooperation with it is described.
According to an embodiment of the present application, transmission device 1 may also include second clutch 60, for example, working as planetary gear set
20 when having rotation trend in a first direction, the rotation of 60 restrictions planetary gear component 20 of second clutch in a first direction；
When planetary gear set 20 rotates in a second direction, second clutch 60 is detached from cooperation with it.But the present invention is not limited to
This, but opposite clutch mode can be used, for example, when planetary gear set 20 has rotation trend in a second direction, the
The rotation of two clutches, 60 restrictions planetary gear component 20 in a first direction；When planetary gear set 20 turns in a first direction
When dynamic, second clutch 60 is detached from cooperation with it.For the convenience described, below only to planetary gear set 20 in first party
The rotation in a first direction of 60 restrictions planetary gear component 20 of second clutch and planetary gear set when having rotation trend upwards
The case where second clutch 60 is detached from cooperation with it when part 20 rotates in a second direction is described.
In the present specification and claims, for the convenience on describing and understanding, first direction also be can be described as just
Turn or clockwise, and second direction also can be described as reversion or counterclockwise.
According to an embodiment of the present application, mafor planet gear 24a and small planetary gear 24b can be integrally formed with identical material
Or it is formed separately.It therebetween may include both connections when mafor planet gear 24a and small planetary gear 24b are formed separately
Key be fixedly connected with keyway, in addition, the two can also be fixedly connected by interference or annular knurl, so that therebetween can be with
With identical revolving speed around at least two planetary gear shaft coaxial rotatings.
According to an embodiment of the present application, first clutch 50 can be unilateral bearing；Alternatively, first clutch 50 and the first tooth
One-way clutch means between circle 30 may include that roller, pawl, buckle or elasticity hook together structure.Equally, second clutch 60 can
For unilateral bearing；Alternatively, the one-way clutch means between second clutch 60 and planetary gear set 20 may also comprise roller, spine
Pawl, buckle or elasticity hook together structure.But the application is without being limited thereto, but unidirectional between first clutch 50 and the first gear ring 30
Those skilled in the art can be used in one-way clutch means between clutch means and second clutch 60 and planetary gear set 20
Any other one-way clutch means known to member.
Fig. 3 is the sectional view for showing driving device and electric vehicle wheel hub structure according to the embodiment of the present application.
Referring to Fig. 3, a kind of driving device 2 for electric vehicle is provided according to an embodiment of the present application, and driving device 2 is wrapped
Include the motor 69 of above-mentioned transmission device 1 and the sun gear 10 for driving transmission device 1.Motor 69 is can be positive and negative
The inner rotor motor or outer rotor motor rotated in both direction, and the drive shaft of motor 69 and sun gear 10
It is coaxially connected.Alternatively, the drive shaft of motor 69 and sun gear 10 are the same part, that is, sun gear 10 can directly with
The rotor of motor 69 connects.
Motor 69 can be inner rotor motor, outer rotor motor, permasyn morot or asynchronous motor.It is electronic
Machine 69 may include stator assembly and rotor assembly.Stator module may include stator core 61, be wrapped on stator core 61 three
Phase winding 62, Hall circuit board (not shown) and stator case 63.Rotor assembly may include rotor core 64 and insertion rotor iron
Magnet steel 65 in core 64.Motor 69 may also include the motor support lid 66 being mounted on stator case 63.Rotor assembly dress
After entering in stator module, (not shown) fixed rotor component is limited with circlip.It powers in addition, motor 69 may also include for it
With the cable 67 of control.
According to an embodiment of the present application, driving device 2 may also include electricity and rub axis 70, and the rotor and the sun of motor 69
It may include the bearing 80 for being rotatably connected the two between gear 10 and the electric axis 70 that rubs.
Electricity rubs and is equipped with second clutch fixing seat 81 on axis 70, and the two is fixedly connected on one by flat key (not shown)
It rises, and carries out axial limiting with stop collar 82.
It may include the isolation cover 84 of isolating pad 83 and protective separation pad 83 between transmission device 1 and motor 69.Transmission dress
It sets and may also include the O-ring seal 85 for preventing grease from leaking between 1 and motor 69.
Referring also to Fig. 3, a kind of electric vehicle is provided according to an embodiment of the present application comprising above-mentioned driving device 2.
According to an embodiment of the present application, electric vehicle may also include the hub cap 90 being fixedly connected with the second gear ring 40, and
Hub cap 90 is connect with the wheel hub 91 of electric vehicle.In addition, electric vehicle may also include end cap 92, wherein end cap 92 and hub cap 90 with
The wheel hub 91 of vehicle forms the space for accommodating driving device 2.
It according to an embodiment of the present application, may include being rotatably connected the two between hub cap 90 and end cap 92 and the electric axis 70 that rubs
Bearing 93.
According to an embodiment of the present application, electric vehicle may also include the oil sealing 94 being arranged between end cap 92 and the electric axis 70 that rubs
And the oil sealing 95 between hub cap 90 and the electric axis 70 that rubs is set.For dust-proof purpose, the outside of oil sealing 94 may also include anti-
Dust hood 96.
Fig. 4 A to 4D is the schematic diagram for showing the working principle of the transmission device according to the embodiment of the present application, and wherein Fig. 4 A is
The schematic diagram of the working condition of transmission device when sun gear rotates in a first direction is shown, Fig. 4 B is to show sun gear to exist
The schematic diagram of the working condition of transmission device when second party is rotated up, Fig. 4 C are to show the second gear ring to rotate in a second direction
When transmission device working condition schematic diagram, and Fig. 4 D shows transmission device when the second gear ring rotates in a first direction
The schematic diagram of working condition.
In Fig. 4 A into 4D, arrow expression to the left is rotated counterclockwise, and arrow expression to the right rotates clockwise, and engagement is
Refer to engaging for the first gear ring and first clutch or engaging for the second gear ring and second clutch, idle running refer to the first gear ring with
First clutch is detached from cooperation or the second gear ring and second clutch is detached from and cooperates.In addition, X is indicated in symbol circle in figure
The Impact direction of first gear ring or the second gear ring is directed toward paper, and black circle indicates the first gear ring or second in symbol circle
The Impact direction of gear ring comes out from paper.
In the following, A to 4D description is filled according to the transmission device for electric vehicle of the embodiment of the present application with driving referring to fig. 4
The working principle set.
As shown in Figure 4 A, when motor rotates forward (input clockwise), because of motor reel (sun gear) and major planet
Gear engagement, mafor planet gear is engaged with the first gear ring simultaneously, and small planetary gear is engaged with the second gear ring, so planet tooth
Wheel assembly has the tendency that rotating forward revolution.At this point, the first gear ring is inverting in the case where restrictions planetary gear component is rotated forward and revolved
(idle running) is inverted under the driving of the mafor planet gear of rotation, and the second gear ring is under the driving of the small planetary gear of reversion rotation
Reversion is exported smaller to realize NW planetary transmission structure (i.e. internal messing-external toothing planetary transmission structure) with higher speed
Torque (Forward of efficiency platform).In the case where it drives electric vehicle, it is suitble to flat pavement running.
As shown in Figure 4 B, when motor reversion (input counterclockwise), because of motor reel (sun gear) and major planet
Gear engagement, mafor planet gear is engaged with the first gear ring simultaneously, and small planetary gear is engaged with the second gear ring, so the first tooth
Circle has rotating forward trend.At this point, mafor planet gear is using the internal tooth of the first gear ring as track in the case where limiting the rotating forward of the first gear ring
Rotation, driving planetary gear set reversion revolution are rotated forward, and the second gear ring inverts under the driving of small planetary gear, thus real
Existing 3Z (NGWN) planetary transmission structure (the i.e. public planetary gear-external toothing of the interior external toothing-of internal messing-- internal messing Gear Planet Transmission knot
Structure), biggish torque (efficiency platform moves back) is transmitted with lower speed.In the case where it drives electric vehicle, it is suitable for
Climbing traveling.
As shown in Figure 4 C, when vehicle slides forward, because motor reel (sun gear) is engaged with mafor planet gear, greatly
Planetary gear is engaged with the first gear ring simultaneously, and small planetary gear is engaged with the second gear ring, so the second gear ring is in vehicle wheel
It is inverted under the drive of hub, the first gear ring and planetary gear set are reversion, idling conditions are in, to sliding forward not for vehicle
Generate any obstacle.Thus it is guaranteed that vehicle can be slided smoothly forward.
As shown in Figure 4 D, when vehicle is pushed backwards, because motor reel (sun gear) is engaged with mafor planet gear,
Mafor planet gear is engaged with the first gear ring simultaneously, and small planetary gear is engaged with the second gear ring, so the second gear ring is in vehicle
It is rotated forward under the drive of wheel hub, the second gear ring drives small planetary gear to rotate forward, and the mafor planet gear of rotating forward generates just the first gear ring
Transfer toward gesture.At this point, in the case where limiting the rotating forward of the first gear ring, planetary gear set reversion.Therefore, it can be achieved that vehicle is by backward
It is not obstructed when promotion.
The transmission device for electric vehicle according to the application include sun gear, planetary gear set (including with too
The mafor planet gear of positive gear engagement and the small planetary gear being fixedly and coaxially connected with mafor planet gear), in mafor planet gear
The first gear ring engaged and the second gear ring with small planetary gear internal messing.Therefore, the first gear ring and planet tooth are unidirectionally being limited
In the case where the movement of wheel assembly, by sun gear rotating in positive and negative both direction, it can be achieved that two of the second gear ring
Speed output.The driving according to the application is formed according to the combination of the transmission device of the embodiment of the present application and the motor of positive and negative rotation
Device.When being applied to electric vehicle according to the driving device of the application, it can be achieved that two grades of speed changes of electric vehicle, the small torsion of high speed
One gear of square is suitable for flat pavement running, and a gear of low-speed big is suitable for section of climbing.This is more mountainous region areas
The electric vehicle of urgent need.
The above is only the exemplary embodiment of the application, not for the protection scope of limitation the application, the application's
Protection scope is determined by the attached claims.
Claims (17)
1. a kind of transmission device for electric vehicle, comprising:
Sun gear；
Planetary gear set, including first planet carrier cover board, the second planet carrier cover board, it is fixedly connected with the first planet carrier cover board
With at least two planetary gear shafts of the second planet carrier cover board and rotatably it is socketed in at least two planets tooth
On wheel shaft and at least two planetary gears that are evenly arranged on around the sun gear, wherein at least two planetary gear is every
One include can coaxial rotating, the mafor planet gear and small planetary gear that are fixed together, and the major planet tooth
Wheel is engaged with the sun gear；
First gear ring has internal tooth, engages with mafor planet gear described at least two planetary gear；And
Second gear ring has internal tooth, engages with small planetary gear described at least two planetary gear.
2. transmission device as described in claim 1 further includes being arranged at least two planetary gear and at least two rows
A pair of bearings between star gear shaft.
3. transmission device as described in claim 1, wherein at least two planetary gear is 2 to 8 planetary gears.
4. transmission device as described in claim 1, wherein at least two planetary gear is 3 or 4 planetary gears.
5. transmission device as described in claim 1 further includes first clutch, when first gear ring has in a first direction
When rotation trend, the first clutch limits the rotation of first gear ring in a first direction；When first gear ring exists
When second party is rotated up, the first clutch is detached from cooperation with it.
6. transmission device as claimed in claim 5 further includes second clutch, when the planetary gear set in a first direction
On when having rotation trend, the second clutch limits the rotation of the planetary gear set in a first direction；When the row
When star gear assembly rotates in a second direction, the second clutch is detached from cooperation with it.
7. transmission device as described in claim 1, wherein the mafor planet gear and the small planetary gear are formed as whole.
8. transmission device as described in claim 1, wherein including connecting between the mafor planet gear and the small planetary gear
Connect the key and keyway of the two.
9. transmission device as claimed in claim 5, wherein the first clutch is unilateral bearing or first clutch
Clutch means between device and first gear ring include that roller, pawl, buckle or elasticity hook together structure.
10. transmission device as claimed in claim 6, wherein the second clutch be unilateral bearing or described second from
Clutch means between clutch and the planetary gear set include that roller, pawl, buckle or elasticity hook together structure.
11. a kind of driving device for electric vehicle, including transmission device as described in any one of claim 1 to 10 and
For driving the motor of the sun gear of the transmission device,
Wherein the motor is the motor that can be rotated in positive and negative both direction, and the drive shaft of the motor with it is described
Sun gear is coaxially connected.
It further include that electricity rubs axis, and the rotor of the motor and the sun 12. driving device as claimed in claim 11
It includes the bearing both being rotatably connected between axis that gear and the electricity, which rub,.
13. a kind of electric vehicle, including the driving device as described in claim 11 or 12.
14. electric vehicle as claimed in claim 13 further includes the hub cap being fixedly connected with second gear ring, and described
The connection of the wheel hub of hub cap and electric vehicle.
15. electric vehicle as claimed in claim 14 further includes end cap, wherein the wheel of the end cap and the hub cap and vehicle
Hub forms the space for accommodating the driving device.
16. electric vehicle as claimed in claim 15 includes between axis wherein the hub cap and the end cap and the electricity rub
It is rotatably connected the bearing of the two.
It further include that the end cap is set and oil sealing that the electricity rubs between axis 17. electric vehicle as claimed in claim 16
And the hub cap is set and oil sealing that the electricity rubs between axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711481680.3A CN109987193A (en) | 2017-12-29 | 2017-12-29 | Transmission device, driving device and the electric vehicle with driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711481680.3A CN109987193A (en) | 2017-12-29 | 2017-12-29 | Transmission device, driving device and the electric vehicle with driving device |
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| Publication Number | Publication Date |
|---|---|
| CN109987193A true CN109987193A (en) | 2019-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711481680.3A Pending CN109987193A (en) | 2017-12-29 | 2017-12-29 | Transmission device, driving device and the electric vehicle with driving device |
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