CN207782631U - A kind of axial-flux electric machine - Google Patents
A kind of axial-flux electric machine Download PDFInfo
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- CN207782631U CN207782631U CN201721914300.6U CN201721914300U CN207782631U CN 207782631 U CN207782631 U CN 207782631U CN 201721914300 U CN201721914300 U CN 201721914300U CN 207782631 U CN207782631 U CN 207782631U
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Abstract
The utility model is related to a kind of axial-flux electric machine, the stator includes stator body and the stator core that is arranged on stator body, is laid with stator winding on stator core, stator winding is formed by multiple stator teeth loop connectings；Multigroup permanent magnetism magnetism-collected structure is distributed on stator winding, permanent magnetism magnetism-collected structure is permanent magnet array magnet steel group, permanent magnet array magnet steel group forms a permanent magnet array on stator winding, so that stator winding surface layer forms an armoured magnetic field when rotated, the magnetic line of force in entire magnetic circuit is promoted to be closed along stator teeth, reduce leakage field existing for teeth portion, improve magnet steel utilization rate, improve air gap flux density, motor torque density can be improved, the unit for electrical property parameters such as efficiency make motor have higher power density and efficiency.
Description
Technical field
The utility model is related to the technical field of motor, specifically a kind of axial-flux electric machine, more particularly to it is a kind of
The axial-flux electric machine of the poly- magnetic of permanent magnetism.
Background technology
Currently, axial-flux electric machine is usually also known as disc type electric machine, and disc type permanent magnet synchronous electric motor is disc type electric machine from now on
Trend, and rare earth rubidium iron canopy is its main permanent-magnet material.Due to disc type electric machine shaped flat, compact-sized and its excellent spy
Property is widely used in the fields such as industrial production, rail traffic, aerospace.
However disc type permanent magnet synchronous electric motor not high enough, not wide enough between high efficient area, the speed governing that still has torque density at present
The problems such as range is not wide enough.Meanwhile there are leakage field phenomenons for existing permanent magnet synchronous motor teeth portion, the utilization rate of magnet steel is not high, gas
Gap flux density is relatively low, then influences motor torque density, the unit for electrical property parameters such as efficiency；In specific use, motor teeth portion exists
It can occur to vibrate under different modalities and deform, affect the service life of motor and increase the noise of motor.
Invention content
The purpose of this utility model is to provide a kind of axial-flux electric machine, by be distributed on stator winding it is multigroup forever
Magnetic magnetism-collected structure increases the air gap flux density of axial-flux electric machine, reduces magnetic leakage factor, improves power of motor density, improves effect
Rate.
To achieve the goals above, the technical solution of the utility model is：A kind of axial-flux electric machine, the motor packet
It includes shell and sets the stator and rotor worked in coordination in the housing, it is characterised in that：The stator includes stator body and sets
The stator core on stator body is set, stator winding is laid on stator core, the stator winding is by multiple stator tooths
Portion's loop connecting forms；Multigroup permanent magnetism magnetism-collected structure is distributed on the stator winding, the permanent magnetism magnetism-collected structure is forever
Magnetic array magnet steel group, permanent magnet array magnet steel group form a permanent magnet array on stator winding so that are revolving on stator winding surface layer
An armoured magnetic field is formed when turning, and the magnetic line of force in entire magnetic circuit is promoted to be closed along stator teeth.
Preferably, the permanent magnet array magnet steel group is covered on the gap for the stator teeth that two connect, and adjacent two
It is equipped with copper wire winding layer between group permanent magnet array magnet steel group, the copper wire winding layer is set around on stator teeth, each permanent magnetism
Array magnet steel group is spliced by 3-8 block magnet steel, and permanent magnetism array magnetic steel material is ferrite Y30.
Further, the permanent magnetism array magnet steel group is spliced by 3 blocks of magnet steel, and the magnetizing direction of three blocks of magnet steel is
180 °, 90 ° and 0 °, the magnet steel of 90 ° of magnetizing directions is higher than the height of another two blocks of magnet steel, and the magnet steel of 180 ° and 0 ° magnetizing directions is higher than
Unanimously.
Further, the permanent magnetism array magnet steel group is spliced by 4 blocks of magnet steel, the magnetizing directions of 4 blocks of magnet steel is 180 °,
120 °, 60 ° and 0 °, the magnet steel of both sides is highly consistent, and intermediate two pieces of magnet steel height are also consistent, and the height of intermediate magnet steel is higher than two
The height of side magnet steel.
Further, the permanent magnetism array magnet steel group is spliced by 5 blocks of magnet steel, the magnetizing directions of 5 blocks of magnet steel is 180 °,
135 °, 90 °, 45 ° and 0 °, the magnet steel height highest of 90 ° of magnetizing directions, the magnet steel of 135 ° of magnetizing directions and 45 ° of magnetizing directions
Magnet steel is highly consistent and is less than the magnet steel height of 90 ° of magnetizing directions, the magnetic of the magnet steel and 0 ° of magnetizing direction of 180 ° of magnetizing directions
Steel is highly consistent and is less than the magnet steel height of 135 ° of magnetizing directions.
Further, intermediate magnet steel is square magnetic steel, and the magnet steel of both sides is respectively equipped with a notch, and the notch is set to
The inside portion of the outside portion of magnet steel, both sides magnet steel is horizontal plane, and the water surface is flat to fit with intermediate magnet steel；The notch is equipped with
One scarf, the angular range between the scarf and horizontal plane are 20-40 degree.
Compared with the existing technology, the technical solution of the utility model further includes many in addition to the improvement of overall technical architecture
Improvement in terms of details, specifically, having the advantages that：
1, multigroup permanent magnetism magnetism-collected structure is distributed in improvement project described in the utility model on stator winding, described
Permanent magnetism magnetism-collected structure is permanent magnet array magnet steel group, and permanent magnet array magnet steel group forms a permanent magnet array on stator winding so that
Stator winding surface layer forms an armoured magnetic field when rotated, and the magnetic line of force in entire magnetic circuit is promoted to be closed along stator teeth
It closes, reduces leakage field existing for teeth portion, improve magnet steel utilization rate, improve air gap flux density, motor torque density, efficiency etc. can be improved
Unit for electrical property parameters；
2, in the technical solution of the utility model, each permanent magnetism array magnet steel group is spliced by 3-8 block magnet steel, permanent magnetism
Array magnetic steel material is ferrite Y30, and magnetic field intensity is far below the magnetic field intensity that rare earth rubidium iron canopy on rotor generates, the intensity
The increase of air gap flux density distortion and harmonic component is not influenced, and in addition ferrite permanent-magnet materials have heat safe effect, with motor
Copper wire is in direct contact, and increases the heat dissipation area of machine winding, improves the cooling effect of motor；
3, permanent magnet array magnet steel group described in the utility model is covered on the gap for the stator teeth that two connect, adjacent
Two groups of permanent magnet array magnet steel groups between be equipped with copper wire winding layer, the copper wire winding layer is set around on stator teeth, fully
Using notch and teeth portion structure, the installation difficulty of magnet steel is alleviated, electricity is improved in the case where not changing motor existing design
The copper wire compactedness and cooling effect of machine；
4, when the utility model motor operation, electromagnetic force is when stator teeth, since segmented magnet steel is instead of original
Some monoblock type slots are carved, and vibration and deformation of the teeth portion under different modalities can be reduced, and are improved the service life of motor and are reduced
The noise of motor.
Description of the drawings
Fig. 1 is the stator structure schematic diagram of the utility model.
Fig. 2 is the another stator structure schematic diagram of the utility model.
Fig. 3 is the portions the A enlarged diagram of Fig. 2.
Fig. 4 is the enlarged structure schematic diagram of side magnet steel in Fig. 2.
Fig. 5 is the enlarged structure schematic diagram of intermediate magnet steel in Fig. 2.
Reference numeral：
1 permanent magnetism array magnet steel group, 2 side magnet steel, 3 middle part magnet steel, 4 stator winding, 5 iron cores, 6 stator teeths；
21 notches.
Specific implementation mode
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally
The every other embodiment that field those of ordinary skill is obtained without making creative work, belongs to this practicality
Novel protected range.
The utility model provides a kind of axial-flux electric machine, and referring specifically to Fig. 1, the motor includes shell and is located at
The stator and rotor worked in coordination in shell, difference with the prior art are：The stator includes stator body and sets
The stator core on stator body is set, stator winding is laid on stator core, the stator winding is by multiple stator tooths
Portion's loop connecting forms, and specifically, exactly multiple stator teeth sides are connected to form a cricoid circle；The stator
Multigroup permanent magnetism magnetism-collected structure is distributed on winding, the permanent magnetism magnetism-collected structure is permanent magnet array magnet steel group, permanent magnet array magnet steel
Group forms a permanent magnet array on stator winding so that stator winding surface layer forms an armoured magnetic field when rotated, promotes
The magnetic line of force in entire magnetic circuit is closed along stator teeth, reduces leakage field existing for teeth portion, improves magnet steel utilization rate, is improved
Air gap flux density can improve motor torque density, the unit for electrical property parameters such as efficiency.
It further illustrates, the rest part of stator teeth winds copper wire, which turns in rotary motion
The magnetic field that son generates is had an effect, and will be more than copper wire top layer according to minimum magnetic flux path principle（Close to casing side）Surface is high
The part magnetic line of force of degree is adsorbed, which is the invalid magnetic line of force, is not involved in energy converting between mechanical；The magnetic field simultaneously
The originally invalid magnetic line of force in part is repelled, to increase effective cutting magnetic line radical, improves energy converting between mechanical mistake
The magnetic flux of unit area in journey increases induced electromotive force according to the law of electromagnetic induction, improves the energy output of motor.
In one embodiment, the permanent magnet array magnet steel group is covered on the gap for the stator teeth that two connect,
This gap is open slot, and open slot must have cogging torque, due to the presence of permanent magnet array, can significantly weaken tooth socket and turn
Square.
Copper wire winding layer is equipped between two groups of adjacent permanent magnet array magnet steel groups, the copper wire winding layer is set around stator
In teeth portion, each permanent magnetism array magnet steel group is spliced by 3-8 block magnet steel, and permanent magnetism array magnetic steel material is ferrite Y30, magnetic
For field intensity far below the magnetic field intensity that rare earth rubidium iron canopy on rotor generates, which does not influence air gap flux density distortion and harmonic component
Increase, in addition ferrite permanent-magnet materials have heat safe effect, be in direct contact with motor copper wire, increase machine winding dissipate
Hot area improves the cooling effect of motor.
In another embodiment, the permanent magnetism array magnet steel group is spliced by 4 blocks of magnet steel, and 4 blocks of magnet steel magnetize
Direction is 1 80 °, 120 °, 60 ° and 0 °, and the magnet steel of both sides is highly consistent, and intermediate two pieces of magnet steel height are also consistent, intermediate magnet steel
Height be higher than both sides magnet steel height.Intermediate magnet steel is square magnetic steel, and the magnet steel of both sides is respectively equipped with a notch, the slot
Mouth is set to the outside portion of magnet steel, and the inside portion of both sides magnet steel is horizontal plane, and the water surface is flat to fit with intermediate magnet steel；Described
Notch is equipped with a scarf, and the angular range between the scarf and horizontal plane is 20-40 degree.
Here, permanent magnet array is set in motor slot and the slot place of carving, makes full use of notch and teeth portion structure, alleviates magnet steel
Installation difficulty, the copper wire compactedness and cooling effect of motor are improved in the case where not changing motor existing design.It utilizes
Permanent magnetic steel substitutes original slot and carves, and when motor operation, electromagnetic force is when stator teeth, since segmented magnet steel substitutes
Original monoblock type slot is carved, and can be reduced vibration and deformation of the teeth portion under different modalities, is improved service life and the drop of motor
The low noise of motor.By a series of permanent magnet array specific configuration modes, a special field region, the field regions are constituted
The magnetic field that rotor of the domain in rotary motion generates is had an effect, and will be more than copper wire top layer according to minimum magnetic flux path principle
（Close to casing side）The part magnetic line of force of apparent height is adsorbed, which is the invalid magnetic line of force, is not involved in electromechanics
Energy is converted；The originally invalid magnetic line of force in part is repelled in the magnetic field simultaneously, to increase effective cutting magnetic line radical,
The magnetic flux of unit area increases induced electromotive force according to the law of electromagnetic induction during raising energy converting between mechanical, improves electricity
The energy of machine exports.
In a specific embodiment, the permanent magnetism array magnet steel group is spliced by 5 blocks of magnet steel, and 5 blocks of magnet steel fill
Magnetic direction be 180 °, 135 °, 90 °, 45 ° and 0 °, the magnet steel height highest of 90 ° of magnetizing directions, the magnet steel of 135 ° of magnetizing directions with
The magnet steel of 45 ° of magnetizing directions is highly consistent and magnet steel height less than 90 ° of magnetizing directions, the magnet steel of 180 ° of magnetizing directions and 0 °
The magnet steel of magnetizing direction is highly consistent and is less than the magnet steel height of 135 ° of magnetizing directions.
It, cannot the above content is specific preferred embodiment further detailed description of the utility model is combined
Assert that the utility model specific implementation is confined to these above-mentioned explanations.For the common skill of the utility model technical field
For art personnel, without departing from the concept of the premise utility, a number of simple deductions or replacements can also be made, all should
It is considered as belonging to the scope of protection of the utility model.
Claims (6)
1. a kind of axial-flux electric machine, the motor includes shell and sets the stator and rotor worked in coordination in the housing,
It is characterized in that：The stator includes stator body and the stator core that is arranged on stator body, is laid on stator core
Stator winding, the stator winding are formed by multiple stator teeth loop connectings；
Multigroup permanent magnetism magnetism-collected structure is distributed on the stator winding, the permanent magnetism magnetism-collected structure is permanent magnet array magnet steel
Group, permanent magnet array magnet steel group form a permanent magnet array on stator winding so that stator winding surface layer forms one when rotated
A armoured magnetic field promotes the magnetic line of force in entire magnetic circuit to be closed along stator teeth.
2. a kind of axial-flux electric machine according to claim 1, it is characterised in that：The permanent magnet array magnet steel group covering
On the gap for the stator teeth that two connect, copper wire winding layer is equipped between adjacent two groups of permanent magnet array magnet steel groups, it is described
Copper wire winding layer be set around on stator teeth, each permanent magnetism array magnet steel group is spliced by 3-8 block magnet steel, permanent magnetism array magnetic
Steel material is ferrite Y30.
3. a kind of axial-flux electric machine according to claim 2, it is characterised in that：The permanent magnetism array magnet steel group is by 3
Block magnet steel is spliced, and the magnetizing direction of three blocks of magnet steel is 180 °, 90 ° and 0 °, and the magnet steel of 90 ° of magnetizing directions is higher than another two blocks of magnetic
The height of steel, 180 ° with the magnet steel of 0 ° of magnetizing direction higher than consistent.
4. a kind of axial-flux electric machine according to claim 2, it is characterised in that：The permanent magnetism array magnet steel group is by 4
Block magnet steel is spliced, and the magnetizing direction of 4 blocks of magnet steel is 1 80 °, 120 °, 60 ° and 0 °, and the magnet steel of both sides is highly consistent, intermediate
Two pieces of magnet steel height it is also consistent, the height of intermediate magnet steel is higher than the height of both sides magnet steel.
5. a kind of axial-flux electric machine according to claim 2, it is characterised in that：The permanent magnetism array magnet steel group is by 5
Block magnet steel is spliced, and the magnetizing direction of 5 blocks of magnet steel is 180 °, 135 °, 90 °, 45 ° and 0 °, the magnet steel height of 90 ° of magnetizing directions
Highest, the magnet steel of 135 ° of magnetizing directions and the magnet steel of 45 ° of magnetizing directions are highly consistent and high less than the magnet steel of 90 ° of magnetizing directions
Degree, the magnet steel of 180 ° of magnetizing directions are highly consistent with the magnet steel of 0 ° of magnetizing direction and less than the magnet steel of 135 ° of magnetizing directions height
Degree.
6. a kind of axial-flux electric machine according to claim 4, it is characterised in that：Intermediate magnet steel is square magnetic steel, both sides
Magnet steel be respectively equipped with a notch, the notch is set to the outside portion of magnet steel, and the inside portion of both sides magnet steel is horizontal plane, should
Horizontal plane fits with intermediate magnet steel；The notch is equipped with a scarf, the angular range between the scarf and horizontal plane
For 20-40 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721914300.6U CN207782631U (en) | 2017-12-31 | 2017-12-31 | A kind of axial-flux electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721914300.6U CN207782631U (en) | 2017-12-31 | 2017-12-31 | A kind of axial-flux electric machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207782631U true CN207782631U (en) | 2018-08-28 |
Family
ID=63223292
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721914300.6U Active CN207782631U (en) | 2017-12-31 | 2017-12-31 | A kind of axial-flux electric machine |
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| Country | Link |
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| CN (1) | CN207782631U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109194070A (en) * | 2018-09-07 | 2019-01-11 | 华中科技大学 | A kind of assembled stator and its assembling method of axial flux permanent magnet motor |
| WO2020098126A1 (en) * | 2018-11-14 | 2020-05-22 | 歌尔股份有限公司 | Brushless motor and mechanical arm |
| WO2020252693A1 (en) * | 2019-06-19 | 2020-12-24 | 威刚科技股份有限公司 | Axial stator of axial clearance type rotation motor |
-
2017
- 2017-12-31 CN CN201721914300.6U patent/CN207782631U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109194070A (en) * | 2018-09-07 | 2019-01-11 | 华中科技大学 | A kind of assembled stator and its assembling method of axial flux permanent magnet motor |
| WO2020098126A1 (en) * | 2018-11-14 | 2020-05-22 | 歌尔股份有限公司 | Brushless motor and mechanical arm |
| WO2020252693A1 (en) * | 2019-06-19 | 2020-12-24 | 威刚科技股份有限公司 | Axial stator of axial clearance type rotation motor |
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