CN203774916U - Permanent magnet synchronous motor and vehicle - Google Patents
Permanent magnet synchronous motor and vehicle Download PDFInfo
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- CN203774916U CN203774916U CN201420148850.1U CN201420148850U CN203774916U CN 203774916 U CN203774916 U CN 203774916U CN 201420148850 U CN201420148850 U CN 201420148850U CN 203774916 U CN203774916 U CN 203774916U
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- synchronous motor
- pole shoe
- permagnetic synchronous
- outer shroud
- extension part
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Abstract
The utility model discloses a permanent magnet synchronous motor which comprises a stator and a rotor, wherein the stator comprises a support and iron core laminations arranged on the support; the rotor is an outer rotor and comprises an outer ring, pole shoes and permanent magnets. The permanent magnet synchronous motor is characterized in that the pole shoes are fixedly arranged on the inner surface of the outer ring along the peripheral direction; a depression cavity extending along the radial direction is arranged between adjacent pole shoes; and the permanent magnets are fixedly arranged in the depression cavities respectively. Through the reasonable layout of the permanent magnets on the rotor, the performance of the motor is improved, the cost of the motor is reduced, and the size of the motor is reduced. The utility model also discloses a vehicle comprising the permanent magnet synchronous motor.
Description
Technical field
The utility model relates to a kind of permagnetic synchronous motor.The utility model also relates to the vehicle with this permagnetic synchronous motor.
Background technology
Motor vehicle is just come into huge numbers of families with various forms.Large to electric automobile, little of electro-tricycle, battery-operated motor cycle, electric bicycle etc., all with it, use the zero discharge of electric energy, free of contamination Green Travel and receive increasing concern.And in urban transportation, battery-operated motor cycle, electric bicycle etc. are avoided the puzzlement of traffic congestion because its rapidity, convenience make bicyclist again, thereby the walking-replacing tool of first-selection in becoming gradually, during short distance traffic.
Permagnetic synchronous motor is owing to having high efficiency, high output torque, high power density and good dynamic property, and extensively adopted by increasing industry.In motor vehicle field, permagnetic synchronous motor is particularly general as the application of the drive motors that travels.
The common structure of the current permagnetic synchronous motor for driving motor of electric vehicle as shown in Figure 1.Wherein, the permanent magnet 2 that is conventionally tile shape is along the circumferential direction secured on the inner surface of the back iron 1 of annular roughly, thereby forms the external rotor of motor; Lamination 3 is arranged on support 4, forms the stator of motor.This external rotor is combined with wheel hub, form a kind of direct drive wheel hub motor, thereby the rotation of rotor can directly drive the driving wheel of vehicle.Owing to having removed reducing gear from, make driving system structure simple, compact, axial dimension is little, thereby is widely adopted.
Yet, from the angle of motor vehicle, user always wishes that the motor performance that obtains further raising rides or riding demand to meet it, and for the motor of said structure, the raising of its performance needs to use more permanent magnet, and this can bring the increase of cost and volume.And as a kind of surface permanent magnetic synchronous machine, this motor cannot apply the extra reluctance torque that can increase output torque.In addition, because permanent magnet need to adopt the materials such as adhesive, be fixed on the inner surface of rotor, a little less than this makes its mechanical strength, particularly, during high-speed cruising, left certain potential safety hazard.
Utility model content
In view of being used as the permagnetic synchronous motor of driving motor of electric vehicle in prior art, there are the problems referred to above, main purpose of the present utility model is to provide a kind of new topological structure of permagnetic synchronous motor, and it can provide better performance than other conventional drive motors.Another object of the present utility model is to provide the vehicle of the permagnetic synchronous motor with this new topological structure.
According to one side of the present utility model, a kind of permagnetic synchronous motor is provided, it comprises stator and rotor, and wherein, described stator comprises support and is arranged on the lamination on described support, described rotor is external rotor, it comprises outer shroud, pole shoe and permanent magnet, and wherein, described pole shoe is along the circumferential direction fixed on the inner surface of outer shroud, between adjacent pole shoe, be provided with the depression radially extending, described permanent magnet is fixed in described depression.
In one embodiment, between described outer shroud and described pole shoe, be also provided with the interior ring being fixedly connected with described outer shroud, the inner surface of described interior ring is provided with radially inner convex extension part, in described pole shoe, be provided with the concave shaped portion similar to described convex extension part shape, the sidewall of described concave shaped portion is provided with tooth-like part, utilize described tooth-like part, described pole shoe is press fitted on the described convex extension part on interior ring.
Alternatively, described rotor does not comprise interior ring, and described convex extension part is set directly on the inner surface of described outer shroud.
In one embodiment, described pole shoe utilizes adhesive directly to be sticked on the inner surface of described outer shroud.
In one embodiment, the inner surface of described outer shroud is provided with radially inner convex extension part, and the width of the radial extremity of described convex extension part is greater than the width of its root, and described pole shoe is provided with the concave shaped portion of bottom and described convex extension part form fit.
Preferably, the cross sectional shape of described convex extension part radial extremity and/or described concave shaped portion bottom is circular, swallow-tail form, polygon, or inverted T-shaped.
In one embodiment, between described pole shoe and described outer shroud, have gap, in described gap, be perfused with resin, the resin after solidifying is secured together described pole shoe and described outer shroud.
Preferably, described resin is epoxy resin.
According to preferred aspect of the present utility model, the number of described pole shoe is 50, and the number of the groove in described lamination is 45.
According on the other hand of the present utility model, a kind of vehicle is provided, it comprises above-mentioned permagnetic synchronous motor.
Preferably, described vehicle is motor vehicle, and described permagnetic synchronous motor is wheel hub motor.
In addition preferably, described vehicle is working truck, and described permagnetic synchronous motor is operation drive motors.
Permagnetic synchronous motor provided by the utility model, the structure of the external rotor of surface permanent magnetic synchronous machine of the prior art is improved, make permanent magnet be embedded in pole shoe inside, thereby form built-in external rotor permanent magnet synchronous machine, for it has brought saliency, can produce reluctance torque and carry out weak magnetic control system, also reduced the volume of motor simultaneously, the torque that has increased motor, provides cost savings, and has kept other characteristic of motor.On the other hand, the motor vehicle that adopts above-mentioned motor to drive, compared with prior art, structure is more compact, and ride characteristic is more superior, thereby more economical and practical.
Accompanying drawing explanation
Aforementioned and other side of the present utility model will more completely be understood and be understood by the detailed introduction done with reference to the accompanying drawings, in the accompanying drawings:
Fig. 1 is the schematic partial view of the driving motor of electric vehicle of prior art;
Fig. 2 is the schematic partial view according to the drive motors of an execution mode of the present utility model;
Fig. 3 is the schematic partial view according to the drive motors of another execution mode of the present utility model;
Fig. 4 is the schematic partial view according to the drive motors of another execution mode of the present utility model; And
Fig. 5 is according to the schematic partial perspective view of the drive motors of another execution mode of the present utility model.
Embodiment
Referring to Fig. 2-5, according to a kind of permagnetic synchronous motor of the present utility model, it comprises stator and rotor, wherein, described stator comprises support 4 and is arranged on the lamination 3 on support 4, described rotor is external rotor, it comprises outer shroud 11,21,31,41, pole shoe 13,23,33,43 and permanent magnet 14, and, described pole shoe 13,23,33,43 is along the circumferential direction fixed on the inner surface of outer shroud 11,21,31,41, is provided with the depression radially extending between adjacent pole shoe, and described permanent magnet 14 is fixed in described depression.
When above-mentioned motor is during as the drive motors of motor vehicle, outer shroud is combined with the wheel hub of driving wheel of vehicle, can form wheel hub motor and realize the direct driving to driving wheel, it is very convenient to apply.
Referring to Fig. 2, in one embodiment, pole shoe 13 is fixed on outer shroud 11 by interference fit.Particularly, in order to realize pole shoe 13 to the interference fit of outer shroud 11, be provided with the interior ring 12 being fixedly connected with outer shroud 11.The inner surface of interior ring 12 is provided with radially inner convex extension part 16, in pole shoe 13, be provided with the concave shaped portion 17(similar to convex extension part 16 shapes in illustrated example, concave shaped portion 17 be shaped as U-shaped), the sidewall of concave shaped portion 17 is provided with tooth-like part 15, utilize this tooth-like part 15, pole shoe 13 is press fitted on the convex extension part 16 on interior ring 12.In this way, between pole shoe 13 and outer shroud 11, realize firm being connected, thereby the permanent magnet 14 of having guaranteed to be fixed in the depression between adjacent pole shoe is connected with outer shroud reliably.
Be understandable that, interior ring 12 is not necessary, and for example, the convex extension part of matching with concave shaped portion 17 on pole shoe 13 can directly process on the inner surface of outer shroud, thereby omits this interior ring 12.Therefore the performance of motor can not change substantially.Yet, when interior ring is set, can select the material of different hardness to make outer shroud and interior ring, for example select to be more suitable for carrying out with tooth-like part the interior ring of material making of interference fit, can facilitate the installation of pole shoe.
Fig. 3 is another execution mode of the present utility model, wherein shows the another kind of connected mode between pole shoe and outer shroud.Different from the execution mode of Fig. 2, in present embodiment, between outer shroud 21 and pole shoe 23, interior ring is not set, pole shoe 23 is directly sticked on the inner surface of outer shroud.Compare with the execution mode of Fig. 2, owing to having saved the processing of the interior ring that is provided with convex extension part, and the shape of pole shoe is simpler, therefore can reduce the manufacturing cost of motor.Be understandable that equally, also interior ring can be set, pole shoe 23 is by sticking on the inner surface of interior ring and the technical scheme that is indirectly fixed to outer shroud 21 is also feasible.Those skilled in the art easily makes suitable selection to this.
Fig. 4 is another execution mode of the present utility model, wherein shows another connected mode between pole shoe and outer shroud.Different from the execution mode of Fig. 2, in present embodiment, pole shoe 33 is fixed on outer shroud 31 by the sealed mode of shape.Particularly, the inner surface of outer shroud 31 is provided with radially inner convex extension part 36, and the width of the radial extremity 35 of convex extension part 36 is greater than the width of its root, and pole shoe 33 is provided with the concave shaped portion with convex extension part form fit.Further, the cross sectional shape of these convex extension part 36 ends 35 and/or described concave shaped portion bottom can be circular, swallow-tail form, polygon, inverted T-shaped, or other suitable shape.In the specific implementation, also can utilize shape elastic force clamping force sealed and that pole shoe concave shaped portion produces further to guarantee the firm degree connecting simultaneously.
In addition, be understandable that, convex extension part 36 can be arranged on independent interior ring equally as the execution mode of Fig. 2, thereby by being connected and pole shoe is fixed to outer shroud indirectly between interior ring and outer shroud.Those skilled in the art can easily make a choice to this from the angle of processing cost.
Fig. 5 is another execution mode of the present utility model, wherein shows another connected mode again between pole shoe and outer shroud.In present embodiment, pole shoe 43 is not directly connected with outer shroud 41, but between exists gap 42.In this gap 42, be perfused with resin 44, such as epoxy resin etc., after this resin 44 solidifies, pole shoe 43 is firmly connected together with outer shroud 41.Compare with the execution mode of Fig. 3, mechanical strength and the thermal stability of the resin after solidifying are higher, thereby more safe and reliable during high-speed cruising.
Preferably, according to permagnetic synchronous motor of the present utility model, the number of pole shoe can be 50, and the number of the groove in lamination can be 45.Therefore,, for this salient pole type permanent magnet synchronous motor, the ratio of slot number number is 45 to 50.Hold intelligiblely, according to concrete designing requirement and corresponding operating mode, those skilled in the art easily makes other concrete selection to the ratio of slot number number.
Adopt the permagnetic synchronous motor of above-mentioned new topological structure, because permanent magnet is embedded in the inside of pole shoe, it is than surface type permanent magnet synchronous motor of the prior art, at least there is following obvious advantage: in mechanical aspects, its specific surface formula permanent magnet synchronous motor during high-speed cruising is more firm; Aspect electric, as internal permanent magnet synchronous motor, its relatively high inductance value is adapted to pass through weak magnetic control system and moves at high-speed region.Because permanent magnet is different to the distance of iron core with pole shoe, cause the effective air gap of d-axis and quadrature axis different, thereby generation saliency, and because the permeability of permanent magnet and pole shoe has very big-difference, therefore can increase breakdown torque by extra reluctance torque, the reluctance torque that superposes on the basis of permanent-magnet torque, thus overload capacity and the power density of motor improved, and there is wider permanent power bracket.
Therefore in addition, this design has also reduced the volume of motor and the cost of permanent magnet is lower.
According to result of the test, the performance of the motor of new topological structure of the present utility model and the surface permanent magnetic synchronous machine shown in Fig. 1 are almost identical, but torque has increased 5%.In addition, motor of the present utility model has reduced by about 50% permanent magnet.
Due to above-mentioned advantage, permagnetic synchronous motor of the present utility model is highly suitable in vehicle environmental, can meet and when startup, low speed or climbing, export large torque, when high speed, export high-power, and the service requirement of wide speed regulating range and high reliability can be provided, can meet again the structural requirement of the aspects such as miniaturization, lightness and arrangement space be limited.
Therefore, this motor can be used as the drive motors of the lightweight electric powered vehicles such as electric bicycle, battery-operated motor cycle, electro-tricycle, also can be used as the drive motors of electric automobile, hybrid vehicle and other various new-energy automobiles, for example, be used for forming the wheel hub motor of above-mentioned vehicle.
In addition, permagnetic synchronous motor of the present utility model can also be as the vehicle-mounted operation drive motors of working truck, for example, is used for forming the cleaning drive motors of urban road sweeping vehicle etc.
Certainly, those skilled in the art will readily understand, permagnetic synchronous motor of the present utility model is not limited to the above-mentioned application in vehicle, but can be applied to any occasion that motor is had to identical or similar demand.
Be to be understood that, above-mentioned execution mode is only exemplary, and it is nonrestrictive, in the situation that not departing from basic principle of the present utility model, those skilled in the art can make for above-mentioned details various significantly or the modification or the replacement that are equal to, all will be contained within the scope of claim of the present utility model.
Claims (12)
1. a permagnetic synchronous motor, comprise stator and rotor, wherein, described stator comprises support and be arranged on the lamination on described support, and described rotor is external rotor, and it comprises outer shroud, pole shoe and permanent magnet, it is characterized in that, described pole shoe is along the circumferential direction fixed on the inner surface of outer shroud, is provided with the depression radially extending between adjacent pole shoe, and described permanent magnet is fixed in described depression.
2. permagnetic synchronous motor according to claim 1, it is characterized in that, between described outer shroud and described pole shoe, be also provided with the interior ring being fixedly connected with described outer shroud, the inner surface of described interior ring is provided with radially inner convex extension part, in described pole shoe, be provided with the concave shaped portion similar to described convex extension part shape, the sidewall of described concave shaped portion is provided with tooth-like part, utilizes described tooth-like part, and described pole shoe is press fitted on the described convex extension part on interior ring.
3. permagnetic synchronous motor according to claim 2, is characterized in that, described rotor does not comprise interior ring, and described convex extension part is set directly on the inner surface of described outer shroud.
4. permagnetic synchronous motor according to claim 1, is characterized in that, described pole shoe utilizes adhesive directly to be sticked on the inner surface of described outer shroud.
5. permagnetic synchronous motor according to claim 1, it is characterized in that, the inner surface of described outer shroud is provided with radially inner convex extension part, and the width of the radial extremity of described convex extension part is greater than the width of its root, and described pole shoe is provided with the concave shaped portion of bottom and described convex extension part form fit.
6. permagnetic synchronous motor according to claim 5, is characterized in that, the cross sectional shape of described convex extension part radial extremity and/or described concave shaped portion bottom is circular, swallow-tail form, polygon, or inverted T-shaped.
7. permagnetic synchronous motor according to claim 1, is characterized in that, between described pole shoe and described outer shroud, has gap, in described gap, is perfused with resin, and the resin after solidifying is secured together described pole shoe and described outer shroud.
8. permagnetic synchronous motor according to claim 7, is characterized in that, described resin is epoxy resin.
9. according to the permagnetic synchronous motor one of claim 1-8 Suo Shu, it is characterized in that, the number of described pole shoe is 50, and the number of the groove in described lamination is 45.
10. a vehicle, is characterized in that, comprises the permagnetic synchronous motor described in any one in claim 1-9.
11. vehicles according to claim 10, is characterized in that, described vehicle is motor vehicle, and described permagnetic synchronous motor is wheel hub motor.
12. vehicles according to claim 10, is characterized in that, described vehicle is working truck, and described permagnetic synchronous motor is operation drive motors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420148850.1U CN203774916U (en) | 2014-03-28 | 2014-03-28 | Permanent magnet synchronous motor and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420148850.1U CN203774916U (en) | 2014-03-28 | 2014-03-28 | Permanent magnet synchronous motor and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203774916U true CN203774916U (en) | 2014-08-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420148850.1U Expired - Fee Related CN203774916U (en) | 2014-03-28 | 2014-03-28 | Permanent magnet synchronous motor and vehicle |
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| Country | Link |
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| CN (1) | CN203774916U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104467229A (en) * | 2014-11-19 | 2015-03-25 | 新疆金风科技股份有限公司 | Rotor module and assembling method thereof |
| CN104953738A (en) * | 2014-03-28 | 2015-09-30 | 博世（宁波）轻型电动车电机有限公司 | Permanent-magnet synchronous motor and vehicle |
-
2014
- 2014-03-28 CN CN201420148850.1U patent/CN203774916U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104953738A (en) * | 2014-03-28 | 2015-09-30 | 博世（宁波）轻型电动车电机有限公司 | Permanent-magnet synchronous motor and vehicle |
| CN104467229A (en) * | 2014-11-19 | 2015-03-25 | 新疆金风科技股份有限公司 | Rotor module and assembling method thereof |
| CN104467229B (en) * | 2014-11-19 | 2017-02-22 | 新疆金风科技股份有限公司 | Rotor module and assembling method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140813 Termination date: 20190328 |