CN109995185A - Electric machine and electric vehicle with electric machine - Google Patents
Electric machine and electric vehicle with electric machine Download PDFInfo
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- CN109995185A CN109995185A CN201711485200.0A CN201711485200A CN109995185A CN 109995185 A CN109995185 A CN 109995185A CN 201711485200 A CN201711485200 A CN 201711485200A CN 109995185 A CN109995185 A CN 109995185A
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- 230000005540 biological transmission Effects 0.000 claims abstract description 39
- 230000001360 synchronised effect Effects 0.000 claims description 64
- 238000001816 cooling Methods 0.000 claims description 8
- 210000003781 tooth socket Anatomy 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 14
- 230000009194 climbing Effects 0.000 description 6
- 244000309464 bull Species 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/18—Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/1004—Structural association with clutches, brakes, gears, pulleys or mechanical starters with pulleys
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/1004—Structural association with clutches, brakes, gears, pulleys or mechanical starters with pulleys
- H02K7/1012—Machine arranged inside the pulley
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Retarders (AREA)
Abstract
This application involves for a kind of electric machine for electric vehicle, comprising: driving device, for providing power for the electric vehicle；Transmission device；And synchronizing device；Wherein, the 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 the 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 the 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 the mafor planet gear is engaged with the sun gear；First gear ring has internal tooth, engages with mafor planet gear described at least two planetary gears；And second gear ring, there is internal tooth, engaged with small planetary gear described at least two planetary gears.
Description
Technical field
This application involves electric vehicle fields, in particular to the electric machine of electric vehicle.
Background technique
Nowadays, due to for factors such as environmental protection and oil consumption costs the considerations of, electric vehicle has become people and gets over
Carry out more selections.However, the ownership of electric vehicle is still less than motorcycle in more mountainous region areas, this is because electric vehicle
Many limitations are being still had in terms of speed, dynamics.For example, conventional boss motor belongs to slowspeed machine
Scope, because of the limitation in technical principle, improving speed, there are obstacles.And built-in motor generally uses high-speed motor, but at present
It is mostly straight on the market to drive form built-in motor the disadvantage is that volume is big, although increased compared to direct driving motor speed, climb
When it is painstaking, meet heavy grade road conditions when be easy to burn out.Although tooth built-in motor volume is reduced band, Motor torque is promoted,
But it is still painstaking when climbing, motor power consumption is big, influences vehicle cruising ability.
In view of this, it is desirable to provide a kind of to be capable of providing multi gear position available to realize output friction speed and torque
The demand of electric vehicle.
Summary of the invention
The application technical problems to be solved are to provide a kind of shift-variable electric machine, are suitable for having a variety of geographical road conditions
Traffic environment, that is, can the high speed small torque operation at level land, and the electric machine that low-speed big is run at mountainous region
With the electric vehicle with electric machine.
In order to solve the above-mentioned technical problem, according to the one aspect of the application, a kind of motor for electric vehicle is provided
Device may include: driving device, for providing power for the electric vehicle；Transmission device；And synchronizing device.?
In some embodiments, transmission device may include: sun gear；Planetary gear set, including first planet carrier cover board, the second row
Carrier cover board, at least two planetary gear shafts for being fixedly connected with the first planet carrier cover board and the second planet carrier cover board,
And rotatably it is socketed at least two at least two planetary gear shaft and be evenly arranged on around the sun gear
Planetary gear, wherein at least two planetary gear each include can coaxial rotating, be fixed together it is big
Planetary gear and small planetary gear, and the mafor planet gear is engaged with the sun gear；First gear ring has internal tooth,
It is engaged with mafor planet gear described at least two planetary gear；And second gear ring, there is internal tooth, with described at least two
The engagement of small planetary gear described in a planetary gear.
In some embodiments, driving device include by with the sun gear it is coaxially connected and drive the transmission to fill
The motor set, and motor can be the motor that can be rotated in positive and negative both direction.
In some embodiments, motor further includes the shell with piece-shape type cooling fin or spiral cooling fin.
In some embodiments, synchronizing device includes synchronous pulley and synchronous belt.
In some embodiments, synchronous pulley includes the first synchronous pulley and the second synchronous pulley, wherein described first
The diameter of synchronous pulley is less than the diameter of second synchronous pulley.
In some embodiments, the first synchronous pulley and the driving device and sun gear are coaxially connected.
In some embodiments, synchronous pulley includes tooth socket, and the synchronous belt includes internal tooth, and when rotated, described
The interior tooth engagement of the tooth socket of synchronous pulley and the synchronous belt.
In some embodiments, synchronous pulley is sprocket wheel or flywheel.
In some embodiments, synchronous belt is belt or chain.
In some embodiments, transmission device, which may also include, is arranged at least two planetary gears and at least two planet teeth
A pair of bearings between wheel shaft.
In some embodiments, at least two planetary gears can be 2 to 8 planetary gears, and more preferably can be 3
A or 4 planetary gears.
In some embodiments, transmission device may also include first clutch, turn when the first gear ring has in a first direction
When dynamic trend, first clutch limits the rotation of the first gear ring in a first direction；When the first gear ring rotates in a second direction
When, first clutch is detached from cooperation with it.
In some embodiments, transmission device may also include second clutch, when planetary gear set in a first direction
When having rotation trend, the rotation of second clutch restrictions planetary gear component in a first direction；When planetary gear set is
When two sides are rotated up, second clutch is detached from cooperation with it.
In some embodiments, mafor planet gear and small planetary gear are formed as entirety.Alternatively, mafor planet gear and small
Planetary gear can be formed separately, and therebetween may include key and keyway connecting the two.
In some embodiments, first clutch can be between unilateral bearing or first clutch and the first gear ring
Clutch means may include that roller, pawl, buckle or elasticity hook together structure.Equally, second clutch can be unilateral bearing, Huo Zhe
Clutch means between two clutches and planetary gear set may include that roller, pawl, buckle or elasticity hook together structure.
According to the another aspect of the application, a kind of electric vehicle is provided comprising above-mentioned electric machine.
The application can realize following beneficial effect.
What it is according to the application includes transmission device and synchronizing device for electric vehicle motor, and transmission device includes the sun
Gear, planetary gear set (are fixedly and coaxially connected including the mafor planet gear engaged with sun gear and with mafor planet gear
Small planetary gear), the second gear ring with the first gear ring of mafor planet gear internal messing and with small planetary gear internal messing.Therefore,
In the case where unidirectionally limiting the movement of the first gear ring and planetary gear set, through sun gear in positive and negative both direction
Rotation is, it can be achieved that two speed of the second gear ring export.To realize two grades of speed changes of electric vehicle, that is, the small torque of high speed
Gear be suitable for flat pavement running, the gear of low-speed big is suitable for section of climbing.And further with the knot of synchronizing device
It closes, realizes the two grades of speed changes and the promotion of torque of another grade, for section of climbing, variable-ratio, big torsion can be further realized
The beneficial effects such as square, long continuation of the journey, to realize the electric vehicle for preferably meeting the needs of different road conditions are coped in more mountainous region areas
?.
From following detailed description, the other aspects and embodiment of the application be will become obvious, when in conjunction with attached drawing
When, the principle of the application is illustrated by way of example.
Detailed description of the invention
The non-limiting and non exhaustive embodiment of the disclosure is described with reference to following attached drawing, unless otherwise indicated,
In through each attached drawing same reference numerals refer to same parts.Component in figure is not necessarily drawn to scale, and may than
Exception draws the convenience to promote understanding of the embodiments of the disclosed embodiments.
Fig. 1 is the overall assembling figure for showing the electric machine structure according to the embodiment of the present application.
Fig. 2 is the decomposition perspective view for showing the transmission device according to the embodiment of the present application.
Fig. 3 is the installation diagram for showing transmission device and synchronizing device according to the embodiment of the present application.
Fig. 4 A is the work for showing transmission device when rotating in a first direction according to the sun gear of the embodiment of the present application
The schematic diagram of state；
Fig. 4 B is the work for showing transmission device when rotating in a second direction according to the sun gear of the embodiment of the present application
The schematic diagram of state；
Fig. 4 C is the work for showing transmission device when rotating in a second direction according to second gear ring of the embodiment of the present application
The schematic diagram of state；
Fig. 4 D is the work for showing transmission device when rotating in a first direction according to second gear ring of the embodiment of the present application
The schematic diagram of state；
Fig. 5 is the schematic diagram for showing the radiator structure of the motor casing according to the embodiment of the present application.
Fig. 6 is the schematic diagram for showing another structure of heat dissipation according to the motor casing of the embodiment of the present application.
Specific embodiment
In order to illustrate the application General Principle and be described below, be not intended to limit herein it is claimed
Inventive concept.In addition, special characteristic described herein can with it is other in each in various possible combination and permutation
The feature of description is used in combination.
Unless specific definition otherwise herein, otherwise all terms will be given its broadest interpretation, including this explanation
Meaning and meaning understood by one of ordinary skill in the art that book is implied and/or as defined in dictionary, paper etc..
The following description disclose the several preferred embodiments and its operation of electric machine and electric vehicle and/or groups
Part part.
Fig. 1 is the overall assembling figure for showing the electric machine structure according to the embodiment of the present application.
Referring to Fig. 1, it illustrates the assembly of the electric machine 100 according to the embodiment of the present application is overall.Electric machine 100 can
To include transmission device 1, driving device 2 and synchronizing device 3.
Below by various pieces specific structure and mutually matched operation operation be described in detail.In this theory
In bright book and claims, for the convenience on describing and understanding, first direction may also indicate that rotating forward or clockwise direction, and
And second direction can indicate reversion or counter clockwise direction.
Fig. 2 shows the decomposition perspective views according to the transmission device 1 of the embodiment of the present application, and Fig. 3 is shown according to this Shen
It please the transmission device 1 of embodiment and the installation diagram of synchronizing device.
Referring to fig. 2 with 3, wherein transmission device 1 may include sun gear 10, planetary gear set 20,30 and of the first gear ring
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.
In some embodiments, transmission device 1, which may also include, is arranged at least two planetary gears 24 and at least two rows
A pair of bearings 25 between star gear shaft.
In some embodiments, each of at least two planetary gear shafts can be used those skilled in the art and be readily apparent that
Any type of connection means.
In some embodiments, transmission device 1 may also include first clutch 50, for example, when the first gear ring 30 is first
When having rotation trend on direction, first clutch 50 limits the rotation of the first gear ring 30 in a first direction；When the first gear ring 30
When rotating in a second direction, first clutch 50 is detached from cooperation with it.But the invention is not limited thereto, but phase can be used
Anti- clutch mode, for example, first clutch 50 limits the first tooth when the first gear ring 30 has rotation trend in a second direction
The rotation of circle 30 in a first direction；When the first gear ring 30 rotates in a first direction, first clutch 50 is detached from it matches
It closes.For the convenience described, first clutch 50 is limited when only having rotation trend in a first direction to the first gear ring 30 below
Make the rotation in a first direction of the first gear ring 30 and when the first gear ring 30 rotates in a second direction first clutch 50 and its
The case where being detached from cooperation is described.
In some embodiments, transmission device 1 may also include second clutch 60, for example, when planetary gear set 20 exists
When having rotation trend on first direction, the rotation of 60 restrictions planetary gear component 20 of second clutch in a first direction；Work as row
When star gear assembly 20 rotates in a second direction, second clutch 60 is detached from cooperation with it.But the invention is not limited thereto,
But opposite clutch mode can be used, for example, when planetary gear set 20 has rotation trend in a second direction, second from
The rotation of 60 restrictions planetary gear component 20 of clutch in a first direction；When planetary gear set 20 rotates in a first direction
When, second clutch 60 is detached from cooperation with it.For the convenience described, below only to planetary gear set 20 in a first direction
On the rotation in a first direction of 60 restrictions planetary gear component 20 of second clutch and planetary gear set when having rotation trend
20 second clutch 60 when rotating in a second direction the case where being detached from cooperation with it, were described.
In some embodiments, 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 key connecting the two when mafor planet gear 24a and small planetary gear 24b are formed separately
It is fixedly connected with keyway, in addition, the two can also be fixedly connected by interference or annular knurl, so that therebetween can be with phase
Same revolving speed is around at least two planetary gear shaft coaxial rotatings.
In some embodiments, first clutch 50 can be unilateral bearing；Alternatively, first clutch 50 and the first gear ring 30
Between one-way clutch means may include that roller, pawl, buckle or elasticity hook together structure.Equally, second clutch 60 can be single
To bearing；Alternatively, the one-way clutch means between second clutch 60 and planetary gear set 20 may also comprise roller, pawl,
Buckle or elasticity hook together structure.But the application is without being limited thereto, but between first clutch 50 and the first gear ring 30 it is unidirectional from
Those skilled in the art can be used in one-way clutch means between conjunction means and second clutch 60 and planetary gear set 20
Known any other one-way clutch means.
Referring back to Fig. 1, wherein providing a kind of for providing the driving device 2 of power for electric vehicle, driving device 2 can
To be the motor 69 of sun gear 10 for driving transmission device 1.Motor 69 can rotate in positive and negative both direction
Inner rotor motor or outer rotor motor 69, and the drive shaft of motor 69 and sun gear 10 are coaxially connected.Alternatively,
The drive shaft and sun gear 10 of motor 69 are the same part, that is, the rotor that sun gear 10 can directly with motor 69
Connection.Motor 69 can be inner rotor motor, outer rotor motor, permasyn morot or asynchronous motor.
On the other hand, with further reference to Fig. 5 and Fig. 6, Figures 5 and 6 are the motor casings shown according to the embodiment of the present application
Radiator structure schematic diagram.
Motor 69 further includes shell 90, and shell 90 can include the cooling fin around multiple sheets thereon as shown in Figure 5
91.In addition, shell 90 can also include around spiral cooling fin 92 thereon as illustrated in fig. 6.Due to the reality according to the application
69 rotation speed of motor applied in example is very fast, and load is big, Yi Fare.Therefore, the shell 90 of motor 69 is designed into slabbing
Formula cooling fin or spiral cooling fin are conducive to the heat dissipation of motor, and then protect to increase shell and air contact area
Motor.
Referring again to Fig. 1, wherein providing a kind of synchronizing device 3 for synchronous driving power, wherein synchronizing device 3 includes
Synchronous pulley 70 and synchronous belt 80.
In some embodiments, synchronous pulley 70 includes small synchronous pulley 70a and big synchronous pulley 70b, small synchronous belt
The drive shaft and sun gear 10 for taking turns 70a and motor 69 are coaxially connected, for synchronously transmitting the dynamic of output shaft output
Power.The diameter of big synchronous pulley 70b is greater than the diameter of small synchronous pulley 70a, with the torque for changing institute's output power.
Synchronous belt 80 surrounds small synchronous pulley 70a and big synchronous pulley 70b to be rotated around two synchronous pulleys.
Two synchronous pulleys 70 include tooth socket (not shown), and synchronous belt 80 include internal tooth (not shown), therefore, when synchronous belt with
Synchronous pulley rotation when, the interior tooth engagement of the tooth socket of synchronous pulley 70 and synchronous belt 80.By known to those skilled in the art,
Synchronous pulley can be sprocket wheel or flywheel, and synchronous belt is belt or chain.
According to the another aspect of the application, the electric vehicle (not shown) of the above-mentioned electric machine of application is also provided.Such as this
Field technical staff it will be appreciated that, above-mentioned electric machine can be fixedly mounted at any position of electric vehicle, as long as
The electric machine can transmit power for electric vehicle.For example, the electric machine can be located at the front and back two of electric vehicle
Between wheel, with the rear wheel power for electric vehicle.In another implementation, electric machine can pass through plug-in side
Formula is fixedly connect with electric vehicle, and provides output power for electric vehicle.In other words, the electric machine and electric vehicle
Connection type do not limited by several ways described herein.
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 is to show transmission device when the second gear ring rotates in a first direction
Working condition schematic diagram.
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, to realize NW planetary transmission structure (i.e. internal messing-external toothing planetary transmission structure), meanwhile, synchronous belt steamboat due to
It is connected firmly with motor reel, motor reel drives the rotation of synchronous belt steamboat, and by synchronous belt, synchronous belt steamboat drives synchronous belt
Bull wheel rotation exports lesser torque (Forward of efficiency platform) with higher speed, in the case where it drives electric vehicle, fits
Close 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), meanwhile, for synchronous belt steamboat due to connecting firmly with motor reel, motor reel drives the rotation of synchronous belt steamboat, and passes through synchronization
Band, synchronous belt steamboat drive the rotation of synchronous belt bull wheel, transmit biggish torque with lower speed (efficiency platform moves back).At it
In the case where driving electric vehicle, it is suitable for climbing traveling.
As shown in Figure 4 C, because when vehicle slides forward, synchronous belt bull wheel is driven through wheel as the defeated of electric machine
Enter end, synchronous belt bull wheel rotates clockwise；And the synchronized V belt translation of synchronous belt steamboat rotates clockwise, synchronous belt steamboat and electricity
Coaxially, furthermore motor reel engages motivation axis (sun gear) with mafor planet gear, and mafor planet gear is nibbled with the first gear ring simultaneously
It closes, and small planetary gear is engaged with the second gear ring, so the second gear ring inverts under the drive of synchronous belt bull wheel, the first gear ring
It is reversion with planetary gear set, is in idling conditions, any obstacle is not generated to sliding forward for vehicle.Thus it is guaranteed that
Vehicle can smoothly slide 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.
What it is according to the application includes transmission device and synchronizing device for electric vehicle motor, and transmission device includes the sun
Gear, planetary gear set (are fixedly and coaxially connected including the mafor planet gear engaged with sun gear and with mafor planet gear
Small planetary gear), the second gear ring with the first gear ring of mafor planet gear internal messing and with small planetary gear internal messing.Therefore,
In the case where unidirectionally limiting the movement of the first gear ring and planetary gear set, through sun gear in positive and negative both direction
Rotation is, it can be achieved that two speed of the second gear ring export.To realize two grades of speed changes of electric vehicle, that is, the small torque of high speed
Gear be suitable for flat pavement running, the gear of low-speed big is suitable for section of climbing.And further with the knot of synchronizing device
It closes, realizes the two grades of speed changes and the promotion of torque of another grade, for section of climbing, can further realize variable
The beneficial effects such as speed, large torque, long continuation of the journey, preferably meet the needs of different road conditions are coped in more mountainous region areas to realize
Electric vehicle.
Unless the context clearly require that otherwise running through the word " comprising " in present specification and claims, " packet
Containing " etc. be interpreted as having the meaning of inclusiveness, rather than exclusive or exhaustive meaning；That is, be " including but not
Be limited to " meaning.Word " coupling ", it is such as usually used herein above, it refers to two or more elements and can be and be directly connected to, or
Person passes through one or more intermediary element connections.In addition, word " here ", " above-mentioned ", " hereafter " etc., when in this application
When, it should refer to the entirety of the application and be not necessarily referring to any specific part of the application.When context allows, above-mentioned specific implementation
The word of singular or plural used in mode can also respectively include plural number or odd number.Word "or" refers to two or more
The list of a project, this word cover all following explanations of word: all items in any project, list in list
Any combination of project in mesh and list.
Teachings of the present application provided herein can be applied to other systems, without being above-mentioned system.Above-mentioned
The element of each embodiment and movement can be combined to provide further embodiment.
Although some embodiments of the present application have been described, these embodiments are only proposed with example, and are not intended to
Limit scope of the present application.Really, new method and system as described herein may be embodied in the form of various other；Furthermore, it is possible to
The various forms omitted, substitute and change method and system described here are carried out, without departing from spirit herein.Appended power
Benefit requires and its is intended to cover these forms or modification equally to fall into the scope and spirit of the present application.
Claims (19)
1. a kind of electric machine for electric vehicle, comprising:
Driving device, for providing power for the electric vehicle；
Transmission device；And
Synchronizing device；
Wherein, the transmission device includes:
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. electric machine as described in claim 1, wherein the driving device includes by coaxially connecting with the sun gear
Connect and drive the motor of the transmission device, and the motor is the motor that can be rotated in positive and negative both direction.
3. electric machine as claimed in claim 2, wherein the motor further includes with piece-shape type cooling fin or spiral
The shell of formula cooling fin.
4. electric machine as described in claim 1, wherein the synchronizing device includes synchronous pulley and synchronous belt.
5. electric machine as claimed in claim 4, wherein the synchronous pulley includes that the first synchronous pulley and second are synchronous
Belt wheel, wherein the diameter of first synchronous pulley is less than the diameter of second synchronous pulley.
6. electric machine as claimed in claim 4, wherein first synchronous pulley and the driving device and sun tooth
It takes turns coaxially connected.
7. electric machine as claimed in claim 4, the synchronous pulley includes tooth socket, and the synchronous belt includes internal tooth, and
When rotated, the interior tooth engagement of the tooth socket of the synchronous pulley and the synchronous belt.
8. electric machine as claimed in claim 4, wherein the synchronous pulley is sprocket wheel or flywheel.
9. electric machine as claimed in claim 4, wherein the synchronous belt is belt or chain.
10. electric machine 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.
11. electric machine as described in claim 1, wherein at least two planetary gear is 2 to 8 planetary gears.
12. electric machine as described in claim 1, wherein at least two planetary gear is 3 or 4 planetary gears.
13. electric machine as described in claim 1 further includes first clutch, when first gear ring in a first direction
When having rotation trend, the first clutch limits the rotation of first gear ring in a first direction；When first gear ring
When rotating in a second direction, the first clutch is detached from cooperation with it.
14. electric machine as claimed in claim 13 further includes second clutch, when the planetary gear set is in first party
When having rotation trend upwards, the second clutch limits the rotation of the planetary gear set in a first direction；When described
When planetary gear set rotates in a second direction, the second clutch is detached from cooperation with it.
15. electric machine as described in claim 1, wherein the mafor planet gear and the small planetary gear are formed as whole
Body.
16. electric machine 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.
17. electric machine as claimed in claim 6, wherein the first clutch be unilateral bearing or described first from
Clutch means between clutch and first gear ring include that roller, pawl, buckle or elasticity hook together structure.
18. electric machine as claimed in claim 7, 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.
19. a kind of electric vehicle, including the electric machine as described in claim 1-18.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711485200.0A CN109995185A (en) | 2017-12-29 | 2017-12-29 | Electric machine and electric vehicle with electric machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711485200.0A CN109995185A (en) | 2017-12-29 | 2017-12-29 | Electric machine and electric vehicle with electric machine |
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| CN109995185A true CN109995185A (en) | 2019-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711485200.0A Pending CN109995185A (en) | 2017-12-29 | 2017-12-29 | Electric machine and electric vehicle with electric machine |
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| Country | Link |
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| CN (1) | CN109995185A (en) |
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