CN202130301U - Full-electric wheel assembly - Google Patents
Full-electric wheel assembly Download PDFInfo
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- CN202130301U CN202130301U CN201120200809U CN201120200809U CN202130301U CN 202130301 U CN202130301 U CN 202130301U CN 201120200809 U CN201120200809 U CN 201120200809U CN 201120200809 U CN201120200809 U CN 201120200809U CN 202130301 U CN202130301 U CN 202130301U
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- wheel
- electric
- magneto
- hub
- wheel set
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Abstract
The utility model relates to a full-electric wheel assembly, which comprises a hub and a tire. A sealed holding space is arranged in the hub, a sun gear is arranged in the holding space, planet gears which are driven to rotate by permanent magnetic motors are arranged along the axial direction of the sun gear, the relationship between the number Z of teeth of the sun gear and the number N of the planet gears meets a formula Z=KN, and both the K and the N are integers larger than 2. The full-electric wheel assembly is provided with the multiple permanent magnetic motors, the planet gears on output shafts of the permanent magnetic motors are driven to transmit torque and rotation speed to the sun gear, and eventually, the hub is driven to rotate by the sun gear. The permanent magnetic motors are arranged in a planet shape and jointly drive the sun gear, purposes of expanding the torque and power are achieved simultaneously, furthermore, axial sizes of the motors do not need to be enlarged, a space of the hub is sufficiently utilized, and basic appearance characteristics of the hub are maintained.
Description
Technical field
The utility model relates to a kind of automotive wheel assembly, more particularly, relates to a kind of all-electric wheel set that adopts many three-phase motor with permanent magnets drivings of planetary layout.
Background technology
Wheel hub motor is used in Electrical Bicycle and Moped Scooter in a large number at present, but the use in electronlmobil is still rare.Major cause is; Each wheel hub of electronlmobil needs the continuous moment of 20-200Nm, the continuous power of 2-200KW usually; And hub rotation speed is not high again, has only 1000-1500rpm usually, therefore; Making directly will inevitably be very big by motor-driven words diameter, and used material and the cost of motor can be very high.The method that solves is to adopt reducing gear, and this method can increase by a retarder of 5: 1 usually, can rotating speed of motor be brought up to 5000-7500rpm, and the volume of motor can reduce exponentially, and this scheme is referred to as the wheel motor scheme usually.But also there is the too big shortcoming of motor axial dimension in this traditional wheel motor scheme, and has destroyed the flat basic profile characteristics of wheel hub motor, is unfavorable for the layout of wheel hub on car load.Tradition adopts the structural representation of wheel motor and direct drive motor wheel hub as shown in Figure 1.
Application number 200410037252.8; The Chinese invention patent of " a kind of structure that constitutes wheel hub motor with plural electrical motor " by name; Proposition disperses power with the structure that plural electrical motor constitutes electric bicycle hub motor, reaches cost-cutting and through changing the purpose that number of motors disposes the different capacity product.This scheme is only applicable to low power wheel hub of electric bicycle, and the drive multiple of plural electrical motor can increase the control difficulty and control cost.
The utility model content
The technical matters that the utility model will solve is; Motor axial dimension to the above-mentioned wheel motor of prior art is big; The car load layout that is unfavorable for wheel hub; Adopt the wheel hub of plural electrical motor to be only applicable to the electronic bicycle of miniwatt and control difficulty and defect of high cost, a kind of all-electric wheel set is provided.
The utility model solves the technical scheme that its technical matters adopted: construct a kind of all-electric wheel set; Comprise wheel hub and be located at the peripheral tire of said wheel hub; It is characterized in that; The central authorities of said wheel hub are provided with a fully enclosed accommodation space, and the side wall centers of said accommodation space is provided with perforation, the interior wheel shaft that is equipped with hollow through bearing of said perforation;
In said accommodation space, be installed with the sun wheel of passing said wheel shaft; Circumferencial direction along said sun wheel is evenly equipped with N satellite gear; Each said satellite gear rotates by being fixed in the magneto-electric machine driven in rotation on the vehicle frame and then driving said sun wheel, and the reduction ratio of said sun wheel and said satellite gear is 4: 1-10: 1;
The stator zero-bit of said magneto-electric machine and rotor zero-bit are all alignd with the zero-bit of said satellite gear, thereby make the teeth groove interlock of zero-bit and said sun wheel of said satellite gear; The number of teeth of said sun wheel is Z, and then Z satisfies following formula:
Z=KN, wherein N and K are the integer greater than 2.
The described all-electric wheel set of the utility model; Wherein, Said accommodation space is by surrounding with said wheel hub shape sidewall that be complementary and substrate that be used for fixing said magneto-electric machine and said wheel hub; On said substrate, the circumferential direction of the said wheel hub in edge is evenly equipped with the through hole that equates with said satellite gear quantity, and the output shaft of said magneto-electric machine is assemblied in the said through hole through bearing.
The described all-electric wheel set of the utility model, wherein, the peripheral region that said substrate and said wheel hub join also is provided with movable sealing structure.
The described all-electric wheel set of the utility model wherein, wherein also is equipped with position transduser on a said magneto-electric machine.
The described all-electric wheel set of the utility model, wherein, said position transduser comprises Hall switch, magnetic coder, magslip or photoelectric encoder.
The described all-electric wheel set of the utility model, wherein, the winding of all said magneto-electric machines and the lead-in wire of position transduser formation wire harness are sealed in the said wheel shaft and from said wheel shaft and pass.
The described all-electric wheel set of the utility model, wherein, said magneto-electric machine is the three-phase motor with permanent magnets of Y form coil, and all said magneto-electric machines adopt parallel connection or series connected mode to electrically connect.
The described all-electric wheel set of the utility model, wherein, this all-electric wheel set also comprises driving governor, said driving governor adopts three-phase square wave electric current or three-phase sine-wave current drives to said magneto-electric machine.
The described all-electric wheel set of the utility model, wherein, said sun wheel comprises metal gear, said planetary wheel comprises metal gear or non-metallic gear.
The described all-electric wheel set of the utility model, wherein, said sun wheel comprises inner gear or external gear.
The described all-electric wheel set of the utility model, wherein, this all-electric wheel set comprises also and the coaxial mounted drg of said sun wheel that said drg comprises plate disc brake or drum brake mechanism.
Implement the all-electric wheel set of the utility model; Have following beneficial effect: the utility model adopts many magneto-electric machines, is also finally rotated by the sun wheel drive hub to sun wheel carry-over moment and rotating speed through the planetary wheel that drives on the magneto-electric machine output shaft.Many magneto-electric machines are planetary layout, and the driven in common sun wheel reaches the purpose of moment and power expansion simultaneously, and the axial dimension of motor needn't enlarge, and make full use of the space of wheel hub, have kept the basic profile characteristics of wheel hub.
Description of drawings
To combine accompanying drawing and embodiment that the utility model is described further below, in the accompanying drawing:
Fig. 1 is the structural representation that prior art adopts wheel motor and direct drive motor wheel hub;
Fig. 2 is the structural representation of a kind of all-electric wheel set preferred embodiment of the utility model;
Fig. 3 is sun wheel and satellite gear engagement figure in a kind of all-electric wheel set preferred embodiment of the utility model;
Fig. 4 is the circuit diagram of three magneto-electric machine three phase windings parallel connections in a kind of all-electric wheel set preferred embodiment of the utility model;
Fig. 5 is the circuit diagram of three magneto-electric machine three-phase windings in series in a kind of all-electric wheel set preferred embodiment of the utility model.
The specific embodiment
As shown in Figure 2; In the preferred embodiment of the utility model; This all-electric wheel set comprises wheel hub 1 and the tire 2 of being located at said wheel hub 1 periphery; The central authorities of wheel hub 1 are provided with a fully enclosed accommodation space, are provided with perforation in the side wall centers of this accommodation space, are equipped with the wheel shaft 3 of hollow in the perforation through bearing.Secondly, in accommodation space, also being installed with the sun wheel 4 of passing wheel shaft 3, also is in above-mentioned accommodation space; Circumferencial direction along sun wheel 4 is evenly equipped with N satellite gear 5; Each satellite gear 5 is by being fixed on magneto-electric machine 6 driven in rotation on the vehicle frame, and then drives sun wheel 4 rotations, and in order to control the rotating speed of wheel; Reduce the axial dimension of motor, regulation sun wheel 4 is 4 with the reduction ratio of satellite gear 5: 1-10: 1 as far as possible.
Because in the preferred embodiment of the utility model, the rotating speed of wheel hub 1 is about 1000rpm, reduction ratio is defined in 4: 1～and about 10: 1, is defined in the rotating speed of electrical motor about 4000～10000rpm exactly.Generally can think: motor speed improves 4～10 times, and power of motor can improve 4～10 times, because: power of motor P=T ω; T is a moment, and ω=2 Л n/60 are cireular frequencys, and T moment is constant; Motor size is constant, and ω improves, and motor horsepower output P has also just improved.The utility model improves rotating speed of motor through the deceleration of gear, and the power density of electric vehicle hub has been improved.And motor speed can not surpass 6000～10000rpm, because the iron loss and the noise of motor can increase sharply at this moment, the life-span of motor also is a problem.So reduction ratio is defined in 4: 1～about 10: 1 relatively rationally.
It should be noted that as shown in Figure 3, in when assembling; The stator zero-bit 601 of magneto-electric machine 6 is all alignd with the zero-bit 501 of satellite gear 5 with the rotor zero-bit; Thereby make the zero-bit 501 of satellite gear 5 and the teeth groove interlock of sun wheel 4, so just guaranteed sun wheel 4 when rotated, the phase place of the counter electromotive force of three phase windings of many magneto-electric machines 6 is all identical; And if the number of teeth of sun wheel 4 is Z, then should satisfy following formula between the number of the tooth number Z of sun wheel and satellite gear 5:
Z=KN, wherein N and K are the integer greater than 2.
This is because if N=3, then the counter electromotive force of three magneto-electric machines is respectively E
A1, E
A2, E
A3, phase place is identical, the series connection back:
Total electro-motive force E
a=E
A1+ E
A2+ E
A3=3E
A1If phase place is inequality, series connection back E
aThe amplitude of synthetic counter electromotive force can reduce, and phase place also can change, and synthetic electrical efficiency must descend.So, guarantee that the zero-bit alignment is very important, simultaneously; With three permanent magnet motors 6, the tooth number Z of corresponding sun wheel 4 should be 3 multiple, and this point is extremely important equally; Because if the tooth number Z of sun wheel 4 is multiples of 4; Therefore the teeth groove interlock of three satellite gears 5 and sun wheel 4 in any case all be asymmetric, can not guarantee also that the counter electromotive force phase place of three permanent magnet motor 6 three phase windings is all identical.
Further, above-mentioned accommodation space is surrounded by the sidewall of and substrate 12 that be used for fixing magneto-electric machine 6 and wheel hub 1 that be complementary with wheel hub 1 shape.On substrate 12, be evenly equipped with the through hole that equates with satellite gear 5 quantity along the circumferential direction of wheel hub 1, the output shaft of magneto-electric machine 6 is assemblied in this through hole through bearing 7.Sun wheel 4 is rigidly connected with wheel hub 1, so wheel hub 1 can rotate with respect to the fixing substrate 12 of magneto-electric machine 6.
Preferably, the periphery (being spoke 10) that joins at aforesaid substrate 12 and wheel hub 1 locates also to be provided with movable sealing structure 11.Movable sealing structure 11 can be the stator wire loop in stator wire loop or band labyrinth, and with one or several rubber ring on the rotor, or the seal ring of composite material constitutes movable sealing structure 11; Also can be the stator wire loop in wire loop or band labyrinth on the rotor, one or several rubber ring on the stator, or the seal ring of composite material constitutes movable sealing structure 11.Because during wheel hub 1 rotation, sun wheel 4 rotations also produce positive pressure in the fully enclosed accommodation space, thereby guaranteed the malleation motion sealing in the airtight accommodation space.
Preferably, wherein on a magneto-electric machine 6 position transduser is housed also, and the sensor of putting can be Hall switch, magnetic coder, magslip or photoelectric encoder.
In the preferred embodiment of the utility model, the winding of all magneto-electric machines 6 and the lead-in wire of position transduser are made into wire harness and are sealed in the wheel shaft 3 of above-mentioned hollow and from wheel shaft 3 and pass.
Further, above-mentioned magneto-electric machine 6 all adopts the three-phase motor with permanent magnets of Y form coil, and all magneto-electric machines 6 adopt parallel connection or series connected mode to electrically connect.As shown in Figure 4, the three-phase motor with permanent magnets of many Y form coils can be in parallel according to U phase, V phase, W, forms one group of UVW three phase winding, perhaps also can U phase, V phase, W be in series according to mode as shown in Figure 5, forms one group of UVW three phase winding.
Because the satellite gear 5 and sun wheel 4 interlocks of many three-phase motor with permanent magnets 6 through separately, be equivalent to separately output shaft by the three-phase motor with permanent magnets of series connected, a mechanically coaxial equivalence.When sun wheel 4 rotations, the counter electromotive force phase place of many three-phase motor with permanent magnets 6 is all identical; Otherwise; When many three-phase motor with permanent magnets 6 are driven; Since separately satellite gear 5 all with sun wheel 4 interlocks; So the rotating speed of many three-phase motor with permanent magnets 6 with turn to inevitable consistent, so many three-phase motor with permanent magnets 6 are equivalent to output shaft by the three-phase motor with permanent magnets of series connected, a mechanically coaxial equivalence.
Therefore can use the three-phase motor with permanent magnets of a driving governor to an equivalence, promptly many magneto-electric machines 6 adopt three-phase square wave electric current or three-phase sine-wave current drives.
Further, sun wheel 4 can adopt metal gear, and 5 in planetary wheel can adopt any in metal gear or the non-metallic gear.And sun wheel 4 can adopt in inner gear or the external gear any, and in the preferred embodiment of the utility model, what sun wheel 4 adopted is external gear.
Understandable, this all-electric wheel set should comprise also and sun wheel 4 coaxial mounted drgs that drg generally includes brake component 9 and brake disc 8, and drg belongs to existing known technology, can adopt any one of plate disc brake or drum brake mechanism.
The utility model adopts many magneto-electric machines, is also finally rotated by the sun wheel drive hub to sun wheel carry-over moment and rotating speed through the planetary wheel that drives on the magneto-electric machine output shaft.Many magneto-electric machines are planetary layout, and the driven in common sun wheel reaches the purpose of moment and power expansion simultaneously, and the axial dimension of motor needn't enlarge, and make full use of the space of wheel hub, have kept the basic profile characteristics of wheel hub.In addition; Being also advantageous in that of many motors, multirow star gear drive mode; Output shaft is along circumference multiple spot, symmetry, evenly stressed and driving; Have stressed and mass distribution symmetry, evenly, the influence in motor gear gap is also because the average effect of Multipoint Drive is suppressed greatly, so the noise during the wheel hub high speed revolution also reduces greatly.
Series of advantages such as therefore the utlity model has the power density height, moment is big, torque fluctuations is little, noise is low, overload capacity is strong, mass distribution is even, stock utilization is high, cost is low and axial dimension is little.
Above embodiment only is the technical conceive and the characteristics of explanation the utility model, and its purpose is to let the personage who is familiar with this technology can understand content of the utility model and enforcement in view of the above, can not limit the protection domain of the utility model.All equalizations of being done with the utility model claim scope change and modify, and all should belong to the covering scope of the utility model claim.
Claims (10)
1. all-electric wheel set; Comprise wheel hub (1) and be located at the peripheral tire (2) of said wheel hub (1); It is characterized in that; The central authorities of said wheel hub (1) are provided with a fully enclosed accommodation space, and the side wall centers of said accommodation space is provided with perforation, the interior wheel shaft (3) that is equipped with hollow through bearing of said perforation;
In said accommodation space, be installed with the sun wheel (4) of passing said wheel shaft (3); Circumferencial direction along said sun wheel (4) is evenly equipped with N satellite gear (5); Each said satellite gear (5) rotates by being fixed in magneto-electric machine (6) driven in rotation on the vehicle frame and then driving said sun wheel (4), and the reduction ratio of said sun wheel (4) and said satellite gear (5) is 4: 1-10: 1;
The stator zero-bit (601) of said magneto-electric machine (6) and rotor zero-bit are all alignd with the zero-bit (501) of said satellite gear (5), thereby make the teeth groove interlock of zero-bit (501) Yu said sun wheel of said satellite gear (5); The number of teeth of said sun wheel (4) is Z, and then Z satisfies following formula:
Z=KN, wherein N and K are the integer greater than 2.
2. all-electric wheel set according to claim 1; It is characterized in that; Said accommodation space is surrounded by sidewall that be complementary with said wheel hub (1) shape and substrate that be used for fixing said magneto-electric machine (6) (12) and said wheel hub (1); On said substrate (12), the circumferential direction of the said wheel hub in edge (1) is evenly equipped with the through hole that equates with said satellite gear (5) quantity, and the output shaft of said magneto-electric machine (6) is assemblied in the said through hole through bearing (7).
3. all-electric wheel set according to claim 2 is characterized in that, said substrate (12) also is provided with movable sealing structure (11) with the peripheral region that said wheel hub (1) joins.
4. all-electric wheel set according to claim 1 is characterized in that, wherein on the said magneto-electric machine (6) position transduser is housed also.
5. all-electric wheel set according to claim 4 is characterized in that said position transduser comprises Hall switch, magnetic coder, magslip or photoelectric encoder.
6. all-electric wheel set according to claim 5 is characterized in that, the winding of all said magneto-electric machines (6) and the lead-in wire of position transduser formation wire harness are sealed in the said wheel shaft (3) and from said wheel shaft (3) and pass.
7. according to each described all-electric wheel set of claim 1-6, it is characterized in that said magneto-electric machine (6) is the three-phase motor with permanent magnets of Y form coil, and all said magneto-electric machines (6) adopt parallel connection or series connected mode to electrically connect.
8. all-electric wheel set according to claim 7 is characterized in that, this all-electric wheel set also comprises driving governor, and said driving governor adopts three-phase square wave electric current or three-phase sine-wave current drives to said magneto-electric machine (6).
9. all-electric wheel set according to claim 1 is characterized in that, said sun wheel (4) comprises inner gear or external gear.
10. all-electric wheel set according to claim 1 is characterized in that, this all-electric wheel set comprises also and the coaxial mounted drg of said sun wheel (4) that said drg comprises plate disc brake or drum brake mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120200809U CN202130301U (en) | 2011-06-14 | 2011-06-14 | Full-electric wheel assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120200809U CN202130301U (en) | 2011-06-14 | 2011-06-14 | Full-electric wheel assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202130301U true CN202130301U (en) | 2012-02-01 |
Family
ID=45519083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120200809U Expired - Lifetime CN202130301U (en) | 2011-06-14 | 2011-06-14 | Full-electric wheel assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202130301U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104882997A (en) * | 2015-05-29 | 2015-09-02 | 徐少波 | Cluster motor driver |
| CN104999898A (en) * | 2015-08-04 | 2015-10-28 | 汪景营 | Combined driving motor and application method thereof |
| CN106972670A (en) * | 2017-04-17 | 2017-07-21 | 安徽旋利达电机有限公司 | A kind of motor output regulation Special machine frame |
| CN111470052A (en) * | 2020-05-31 | 2020-07-31 | 陈泽进 | Planetary gear paddle fan combined engine device |
-
2011
- 2011-06-14 CN CN201120200809U patent/CN202130301U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104882997A (en) * | 2015-05-29 | 2015-09-02 | 徐少波 | Cluster motor driver |
| CN104999898A (en) * | 2015-08-04 | 2015-10-28 | 汪景营 | Combined driving motor and application method thereof |
| CN104999898B (en) * | 2015-08-04 | 2017-05-31 | 汪景营 | Combined drive motor and its application process |
| CN106972670A (en) * | 2017-04-17 | 2017-07-21 | 安徽旋利达电机有限公司 | A kind of motor output regulation Special machine frame |
| CN111470052A (en) * | 2020-05-31 | 2020-07-31 | 陈泽进 | Planetary gear paddle fan combined engine device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120201 |
|
| CX01 | Expiry of patent term |