CN208522544U - A kind of permanent magnet direct driving motor - Google Patents
A kind of permanent magnet direct driving motor Download PDFInfo
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- CN208522544U CN208522544U CN201820811407.6U CN201820811407U CN208522544U CN 208522544 U CN208522544 U CN 208522544U CN 201820811407 U CN201820811407 U CN 201820811407U CN 208522544 U CN208522544 U CN 208522544U
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Abstract
The utility model discloses a kind of permanent magnet direct driving motors, including stator core and rotor core, stator core includes the stator punching of multiple superpositions, rotor core includes the rotor punching of multiple superpositions, stator punching includes the stator yoke of circular ring shape and the radial multiple stator tooths extended to center of circle direction along stator yoke, stator slot is formed between two adjacent stator tooths, the outer circumference portion of stator yoke is arranged with stator technology groove and stator locating slot, the boss ratio of stator punching is 0.67-0.77, the ratio of width to height of stator slot notch is 1.33-10, the ratio of width to height of slot shoulder is 2.57-11, slot bottom it is wide with slot in the ratio between height be 0.67-1.25；Rotor punching includes the rotor yoke of circular ring shape and multiple rotor tooths of the radially outward circumferencial direction extension along rotor yoke, forms rotor slot between two adjacent rotor tooths, rotor technology groove is equipped in rotor slot, the boss ratio of rotor punching is 0.51-1.08.
Description
Technical field
The utility model relates to technical field of motors, and in particular to a kind of permanent magnet direct driving motor.
Background technique
DDR (directly driving rotation) motor is that motor is directly connected in load by one kind under drive system control, realization pair
The motor of load directly driven.Its feature is that torque is big, positioning accuracy is high, movement is steady, fast response time, vibration is low, makes an uproar
Sound is few, energy saving, the service life is long, the excellent motor characteristic such as easy to maintenance.Direct driving motor mostly uses conventional motors technical solution at present,
Distributed winding, number of stator slots are much larger than number of magnetic poles to design feature as follows, and magnetic pole arc angle, Gas-gap Magnetic Field Resonance Wave content are big.It is empty
Between Gas-gap Magnetic Field Resonance Wave can cause back-emf harmonic wave and torque pulsation, strong influence direct driving motor is steadily controlled and is run,
Especially it is embodied in the control performance of the low speed segment of direct driving motor.In addition because motor gas-gap magnetic field harmonics can generate harmonic wave exciting
Power, it is relatively low so as to cause electric efficiency, vibration is big, electromagnetic noise is big.
In addition traditional large inertia high-speed direct-drive rotor generally uses nonmagnetic steel set or high strength fibre line, by Surface Mount
Magnetic shoe fixation prevents its high speed from being fallen off by centrifugation, and either manufacturing process is complicated or because nonmagnetic steel covers intersity limitation for such structure
System, steel bushing thickness reach 1.5mm or more generally in 0.5mm or more so as to cause the air gap of magneto, are keeping motor demagnetization energy
Power and air-gap field density, it is necessary to permanent magnetism body thickness is thickeied, to bring the utilization rate of permanent magnet lower and air-gap field distortion
It is difficult to reach effective sinusoidal magnetic field, Gas-gap Magnetic Field Resonance Wave content is big.
And improves Gas-gap Magnetic Field Resonance Wave at present and generally use rotor magnetic pole and cut arc, skewed-rotor, improve the skills such as winding layout
Art scheme, although preferable air-gap field waveform and winding back emf waveform can be obtained to a certain extent, for high-precision,
High efficiency, high torque density direct driving motor be difficult to reach using above-mentioned Technological improvement plan.Its basic reason be stator and
There are problems for the cooperation of rotor tooth socket.It can be seen that the structure and dimensional parameters of optimization stator punching and rotor punching, optimize tooth
Slot cooperation and stator and rotor magnetic circuit waveform are necessary.
Utility model content
The purpose of this utility model is to provide a kind of permanent magnet direct driving motor, pass through optimization stator punching and rotor punching
Dimensional parameters improve tooth socket fit and stator and rotor magnetic circuit waveform, to overcome back-emf in existing direct-drive motor technology to distort
Seriously, the problems such as harmonic content is big, torque pulsation is big, motor control precision and operation are unstable.
To achieve the above object, the utility model provides a kind of permanent magnet direct driving motor, including stator core and rotor core,
Stator core includes the stator punching of multiple superpositions, and rotor core includes the rotor punching of multiple superpositions, and stator punching includes circle
The stator yoke of annular and radial multiple stator tooths extended to center of circle direction along stator yoke, between two adjacent stator tooths
Stator slot is formed, the outer circumference portion of stator yoke is arranged with stator technology groove and stator locating slot, and the boss ratio of stator punching is
0.67-0.77, the ratio of width to height of stator slot notch are 1.33-10, and the ratio of width to height of slot shoulder is 2.57-11, and slot bottom is wide with height in slot
Than for 0.67-1.25；Rotor punching include circular ring shape rotor yoke and along rotor yoke radially outward circumferencial direction extend it is more
A rotor tooth forms rotor slot between two adjacent rotor tooths, is equipped with rotor technology groove in rotor slot, rotor punching it is inside and outside
Diameter ratio is 0.51-1.08.
Preferably, the outer diameter of stator punching is 155-165mm, and internal diameter 110-120mm, the slot number of stator slot is 24.
Preferably, stator slot is semi-closed port hexagon, and stator slot inside groove mouth width is 2-5mm, and slot shoulder breadth is 9-11mm, slot bottom
Width is 11-15mm, and a height of 0.5-1.5mm of notch, slot shoulder height is 1-3.5mm, and a height of 12-16.5mm in slot, slot bottom angle β are
135-180 °, the most thin position k of slot bottom is 2.5-7mm, and the stator facewidth is 5-7mm.
Preferably, stator trench bottom is in arc-shaped, is concentrically formed uniform thickness yoke portion with the outer circle of stator punching, wherein stator tooth
Width is 5-7mm, and stator yoke thickness is 3.5-7.5mm.
Preferably, the quantity of the stator technology groove is 4-8, and the first salient point and first are arranged in stator technology groove
Symmetrical groove body, the first bump height are 0.5-1.5mm, and the highest point of the first salient point is not less than at a distance from the circumference of stator punching
0.75mm, the width of stator technology groove are 5-8mm, depth 1.5-4mm.
Preferably, the outer diameter of rotor punching is 108-118mm, and internal diameter 60-100mm, the slot number of rotor slot is 20,22
Or 26, a height of 1.5-3mm of rotor tooth, rotor slot bottom width is 10-14mm, and rotor bottom angle is 5-15 °.
Preferably, the second salient point of setting and the second symmetrical groove body in rotor technology groove, the second bump height are 0.5-
1.5mm, the highest point of the second salient point are not less than 0.75mm, the width of rotor technology groove at a distance from the circumference of the rotor punching
For 5-8mm, depth 1.5-4mm.
Preferably, the second symmetrical groove body is plane；Or second symmetrical groove body be curved surface, and the center of circle of curved surface and rotor rush
On same central axis, eccentricity is more than or equal to 0 in the center of circle of the inner periphery of piece.
Preferably, stator punching locating slot is assembled to form skewed stator slot, stator punching fold high thickness with respect to sector away from ratio
Value Sk is 0-1.5.
The structure and ruler that a kind of permanent magnet direct driving motor of the utility model passes through reasonably optimizing stator punching and rotor punching
Very little parameter improves and thus plants stator punching and rotor punching and combine the iron core and motor to be formed, stator winding mode by concentrate around
It is bad and other issues to significantly reduce turn-to-turn in production process, pressure resistance instead of traditional fraction winding method for group mode.Electricity
Machine air gap can obtain preferable air-gap field waveform, and harmonic content is lower, and sinusoidal is presented in winding back-emf, can effectively mention
High electric efficiency, improves motor control and traveling comfort, reduces torque pulsation, reduces motor oscillating and noise,
Improve the performance of permanent magnet direct driving motor.
Detailed description of the invention
Fig. 1 is the stator laminating structure schematic diagram of the utility model；
Fig. 2 is stator punching E partial enlargement scale diagrams shown in FIG. 1；
Fig. 3 is stator punching F partial enlargement structural representation shown in FIG. 1；
Fig. 4 is that Fig. 1 slot bottom is the stator laminating structure schematic diagram that concentric circles circular arc stator yoke is equal wall thickness；
Fig. 5 is the rotor punching structure schematic diagram of the utility model；
Fig. 6 is rotor punching G partial enlargement scale diagrams shown in fig. 5；
Fig. 7 is rotor punching G partial enlargement structural representation I shown in fig. 5；
Fig. 8 is rotor punching G partial enlargement structural representation II shown in fig. 5；
Fig. 9-A and Fig. 9-B is the stator and rotor shaped iron core combined structure schematic diagram of the utility model.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described.
The embodiments of the present invention are described below in detail, the example of embodiment is shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the utility model, and should not be understood as the limit to the utility model
System.
The utility model provides a kind of permanent magnet direct driving motor, as shown in Figure 1, stator punching 1 includes the stator yoke of circular ring shape
13 and along stator yoke 13 the radial multiple stator tooths 11 extended to center of circle direction, formed between two adjacent stator tooths 11
Stator slot 12, the outer circumference portion of stator yoke 13 are arranged with stator technology groove 14 and stator locating slot 15.As shown in Fig. 5, rotor punching
Multiple rotor tooths 22 of rotor yoke 23 of the piece 2 including circular ring shape and the radially outward circumferencial direction extension along the rotor yoke 23,
Rotor slot 21 is formed between two adjacent rotor tooths 22；Rotor technology groove 24 is equipped in rotor slot 21.The outer diameter of stator punching 1
For Do, internal diameter Di, the quantity of stator slot 12 is N, and the slot opening of stator slot 12 is Bs0, and slot shoulder breadth is Bs1, and slot bottom width is
Bs2, a height of Hs0 of notch, slot shoulder height are Hs1, and a height of Hs2 in slot, slot bottom angle is β；The outer diameter of rotor punching 2 is DRo, interior
Diameter is DRi, and the quantity of rotor slot 21 is p, and the angle of rotor tooth 22 is θ, and a height of hs of rotor tooth 22,21 width of rotor slot is bs.
As shown in Figure 1, the outer diameter D o of stator punching 1 is 155-165mm, internal diameter Di is 110-120mm, the most thin position of slot bottom
K is 2.5-7mm, and 11 width b of stator tooth is 5-7mm, and the quantity N of stator slot 12 is 24.
As shown in Fig. 2, the slot opening Bs0 of the stator slot 12 of stator punching 1 is 2-3.5mm, slot shoulder breadth Bs1 is 9-11mm,
The wide Bs2 of slot bottom is 11-15mm, and the high Hs0 of notch is 0.5-1.5mm, and slot shoulder height Hs1 is 1-3.5m, and high Hs2 is 12- in slot
16.5mm, slot bottom angle β value are 135-180 °.
The outer circumference of the stator yoke 13 of stator punching 1 as shown in Figure 3 is evenly distributed with 4-8 stator technology groove 14, stator work
The height of the first salient point 141 of setting and the first symmetrical groove body 142 in skill slot 14, the first salient point 141 is 0.5-1.5mm, and first is convex
The highest point of point 141 is not less than 0.75mm at a distance from the circumference of stator punching 1, and the width of stator technology groove 14 is 5-8mm, and depth is
1.5-4mm。
As shown in figure 4,12 bottom of stator slot is in arc-shaped, same with the outer circle of stator punching 1 in another structure type
It is formed centrally uniform thickness yoke portion, wherein 11 width b of stator tooth is 5-7mm, and 13 thickness c of stator yoke is 3.5-7.5mm.
As shown in figure 5, the outer diameter D Ro of rotor punching 2 is 108-118mm, internal diameter DRi is 60-100mm, rotor slot 21
Quantity p is 20,22,26 3 kind of specification.
As shown in fig. 6, it is 1.5-3mm that rotor tooth 22 is hs high, the wide bs of rotor slot 21 is 10-14mm, the folder of rotor tooth 22
Angle θ is 5-15 °, and the angle of rotor tooth 22 forms the isosceles trapezoid groove for preventing magnetic shoe from falling off, and prevents the high revolving speed of motor from falling off pole
Assemble guide-localization.
As shown in Figure 7 and Figure 8, rotor punching 2 includes the rotor yoke 24 of circular ring shape and radially outward justifying along rotor yoke 24
Multiple rotor tooths 22 that circumferential direction extends form rotor slot 21 between two adjacent rotor tooths 22；It is equipped with and turns in rotor slot 21
Sub- technology groove 23, the second salient point 231 of interior setting of rotor technology groove 23 and the second symmetrical groove body 232,231 height of the second salient point are
0.5-1.5mm, the highest point of the second salient point 231 are not less than 0.75mm, rotor technology groove at a distance from the circumference of rotor punching 2
23 width 5-8mm, deep 1.5-4mm.The bottom of rotor slot 21 is r by two sections of symmetrical straight lines 25 or radius in addition to rotor technology groove 23
Curved section 26 constitute, wherein on same central axis, eccentricity is more than or equal to 0 for r and the center of circle rotor inner circle radius R.
As shown in Fig. 9-A and 9-B, stator core includes multiple said stator punchings 1 stacked, and by stator locating slot
15 are assembled to form skewed stator slot Sk, its meaning of Sk 0-1.5, Sk be stator punching 1 fold high thickness with respect to sector away from ratio.
The iron core and motor to be formed are combined by the stator and rotor punching of structure described in the utility model embodiment and size, it is fixed
Sub- winding method, instead of traditional fraction winding method, greatly reduces turn-to-turn in production process, pressure resistance by concentratred winding mode
It is bad and other issues.Motor gas-gap can obtain preferable air-gap field waveform, and harmonic content is lower, and winding back-emf is presented just
String shape can effectively improve electric efficiency, improve motor control and traveling comfort, reduce torque pulsation, reduce motor
Vibration and noise.The utility model obtains biggish groove area and corresponding under reasonable magnetic structure and air gap magnetic field conditions
Structural strength, in the case where same groove utilization rate St, the copper wire that big specification can be used carries out coiling, to reduce the electricity of motor
Resistance reduces copper wastage and iron loss, improves electric efficiency and specific volume power density and torque density output, it is straight to improve permanent magnetism
The performance of motor is driven, motor temperature rise is lower, and the life and reliability of motor gets a promotion.
Obviously, those skilled in the art can be made without departing from the spirit and scope of the utility model to this
The various modifications and change of the embodiment of utility model.In this manner, if these modifications and changes are in the utility model
In the range of claim and its equivalent form, then the utility model, which also aims to, covers these modifications and changes.Word " comprising "
It is not excluded for the presence of other element or steps that do not list in the claims.Certain measures are documented in mutually different appurtenance
Simple fact in benefit requirement does not show that the combination of these measures is consequently not used for making a profit.Any appended drawing reference in claim
It should not be regarded as limited to range.
Claims (9)
1. a kind of permanent magnet direct driving motor, including stator core and rotor core, the stator core includes the stator of multiple superpositions
Punching, the rotor core include the rotor punching of multiple superpositions, which is characterized in that the stator punching includes determining for circular ring shape
Sub- yoke and radial multiple stator tooths extended to center of circle direction along the stator yoke are formed between two adjacent stator tooths
Stator slot, the outer circumference portion of the stator yoke are arranged with stator technology groove and stator locating slot, the internal-and external diameter of the stator punching
Than for 0.67-0.77, the ratio of width to height of the stator slot notch is 1.33-10, and the ratio of width to height of slot shoulder is 2.57-11, slot bottom it is wide with
The ratio between height is 0.67-1.25 in slot；The rotor punching include the rotor yoke of circular ring shape and along the rotor yoke radially outward
Multiple rotor tooths that circumferencial direction extends form rotor slot between two adjacent rotor tooths, are equipped with rotor in the rotor slot
Technology groove, the boss ratio of the rotor punching are 0.51-1.08.
2. permanent magnet direct driving motor according to claim 1, which is characterized in that the outer diameter of the stator punching is 155-
165mm, internal diameter 110-120mm, the slot number of the stator slot are 24.
3. permanent magnet direct driving motor according to claim 1, which is characterized in that the stator slot is semi-closed port hexagon, institute
Stating stator slot inside groove mouth width is 2-5mm, and slot shoulder breadth is 9-11mm, and slot bottom width is 11-15mm, a height of 0.5-1.5mm of notch, slot shoulder
A height of 1-3.5mm, a height of 12-16.5mm in slot, slot bottom angle β are 135-180 °, and the most thin position k of slot bottom is 2.5-7mm, stator
The facewidth is 5-7mm.
4. permanent magnet direct driving motor according to claim 3, which is characterized in that the stator trench bottom is in arc-shaped, with institute
The outer circle for stating stator punching is concentrically formed uniform thickness yoke portion, wherein the stator tooth width is 5-7mm, the stator yoke thickness is 3.5-
7.5mm。
5. permanent magnet direct driving motor according to claim 1, which is characterized in that the quantity of the stator technology groove is 4-8,
And the first salient point and the first symmetrical groove body are set in the stator technology groove, and the first bump height is 0.5-1.5mm, described the
The highest point of one salient point is not less than 0.75mm at a distance from the circumference of the stator punching, and the width of stator technology groove is 5-8mm,
Depth is 1.5-4mm.
6. permanent magnet direct driving motor according to claim 1, which is characterized in that the outer diameter of the rotor punching is 108-
118mm, internal diameter 60-100mm, the slot number of the rotor slot are 20,22 or 26, a height of 1.5-3mm of rotor tooth, described turn
Pilot trench bottom width is 10-14mm, and the rotor bottom angle is 5-15 °.
7. permanent magnet direct driving motor according to claim 6, which is characterized in that the second salient point is arranged in the rotor technology groove
With the second symmetrical groove body, second bump height is 0.5-1.5mm, the highest point and the rotor punching of second salient point
The distance of circumference be not less than 0.75mm, the width of the rotor technology groove is 5-8mm, depth 1.5-4mm.
8. permanent magnet direct driving motor according to claim 7, which is characterized in that the second symmetrical groove body is plane；Or
The second symmetrical groove body is curved surface, and the center of circle of the inner periphery of the center of circle of the curved surface and the rotor punching is at same center
On axis, eccentricity is more than or equal to 0.
9. permanent magnet direct driving motor according to claim 1, which is characterized in that the stator punching locating slot is assembled to form fixed
Sub- skewed slot, the stator punching fold high thickness with respect to sector away from ratio Sk be 0-1.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820811407.6U CN208522544U (en) | 2018-05-29 | 2018-05-29 | A kind of permanent magnet direct driving motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820811407.6U CN208522544U (en) | 2018-05-29 | 2018-05-29 | A kind of permanent magnet direct driving motor |
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| Publication Number | Publication Date |
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| CN208522544U true CN208522544U (en) | 2019-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820811407.6U Active CN208522544U (en) | 2018-05-29 | 2018-05-29 | A kind of permanent magnet direct driving motor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109940090A (en) * | 2019-04-17 | 2019-06-28 | 珠海格力精密模具有限公司 | Automatic adhesive stamping die and technique in a kind of stator-rotor iron core mould |
| CN112787431A (en) * | 2020-12-24 | 2021-05-11 | 珠海格力电器股份有限公司 | Stator core, motor, car |
| CN114244051A (en) * | 2021-12-27 | 2022-03-25 | 厦门金龙汽车新能源科技有限公司 | High-efficiency permanent magnet synchronous motor |
-
2018
- 2018-05-29 CN CN201820811407.6U patent/CN208522544U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109940090A (en) * | 2019-04-17 | 2019-06-28 | 珠海格力精密模具有限公司 | Automatic adhesive stamping die and technique in a kind of stator-rotor iron core mould |
| CN109940090B (en) * | 2019-04-17 | 2024-04-30 | 珠海格力精密模具有限公司 | Automatic bonding stamping die and process in stator and rotor iron core die |
| CN112787431A (en) * | 2020-12-24 | 2021-05-11 | 珠海格力电器股份有限公司 | Stator core, motor, car |
| CN114244051A (en) * | 2021-12-27 | 2022-03-25 | 厦门金龙汽车新能源科技有限公司 | High-efficiency permanent magnet synchronous motor |
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