CN107248793A - Tangential motor, tangential rotor and its rotor core - Google Patents
Tangential motor, tangential rotor and its rotor core Download PDFInfo
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- CN107248793A CN107248793A CN201710677509.3A CN201710677509A CN107248793A CN 107248793 A CN107248793 A CN 107248793A CN 201710677509 A CN201710677509 A CN 201710677509A CN 107248793 A CN107248793 A CN 107248793A
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- Prior art keywords
- rotor
- bore
- rotor core
- tangential
- magnetic pole
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
- H02K1/2766—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
- H02K29/03—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with a magnetic circuit specially adapted for avoiding torque ripples or self-starting problems
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention discloses a kind of tangential motor, tangential rotor and its rotor core, rotor core includes rotor body (1) and the magnet steel groove (2) being arranged on rotor body (1), 2N is provided with rotor magnetic pole between two neighboring magnet steel groove (2) every bore (12) and fixing hole (11) for fixed rotor punching, N is positive integer；Fixing hole (11) is arranged at the centre of rotor magnetic pole, the individual pole center line both sides that rotor magnetic pole is symmetricly set in every bore (12) of 2N, are located at side of the fixing hole (11) close to rotor body (1) edge every bore (12)；Increase every the center of circle of the width along rotor body (1) of bore (12) to the direction on the outside of it, the width close to two magnetic pole entity parts between bore (12) of pole center line increases along its outer lateral center of circle direction of rotor body (1).The vibrating noise of above-mentioned rotor core, effectively reduction motor, improves electric efficiency.
Description
Technical field
The present invention relates to motor device technical field, more particularly to a kind of tangential motor, tangential rotor and its rotor
Iron core.
Background technology
Because tangential permanent magnet synchronous motor has the effect of " poly- magnetic ", compared with radial permanent magnet synchronous motor, it can produce more
High air gap flux density so that motor has small volume, lightweight, torque is big, and power density is big, electric efficiency height and dynamic property
Good the advantages of, the industrial circles such as servo-drive system, electric propulsion and household electric appliances are applied to more and more.
At present, the air gap flux density and back-emf of tangential permanent magnet synchronous motor contain all kinds of space harmonicses, due to tangential permanent magnet
Slotted on the stator of synchronous motor so that magnetic circuit magnetic conductance is uneven, and air gap flux density, back-emf contain all kinds of space harmonicses, and humorous
Ripple accounting is big, and all kinds of harmonic interactions produce low order Reeb, the vibration noise of expanded motor.Waveform sine is poor, waveform
Aberration rate is high so that the vibration of motor and noise are larger, and influence user's uses health, limits the application of motor.
Therefore, the vibrating noise of motor how is reduced, is those skilled in the art's urgent problem to be solved.
The content of the invention
In view of this, the invention provides a kind of rotor core, to reduce the vibrating noise of motor.Present invention also offers
A kind of tangential rotor and tangential motor with above-mentioned rotor core.
To achieve the above object, the present invention provides following technical scheme：
A kind of rotor core, including rotor body and the magnet steel groove that is arranged on the rotor body, it is two neighboring described
2N is provided with rotor magnetic pole between magnet steel groove every bore and fixing hole for fixed rotor punching, N is positive integer；
The fixing hole is arranged at the centre of the rotor magnetic pole, and the rotor magnetic is symmetricly set in every bore described in 2N
The pole center line both sides of pole, it is described to be located at side of the fixing hole close to the rotor body edge every bore；
The center of circle of the width every bore along the rotor body increases to the direction on the outside of it, also, close to described
Its outer lateral circle of the width of magnetic pole entity part described in two of pole center line between bore along the rotor body
Heart direction increases.
Preferably, in above-mentioned rotor core, described is axially symmetric structure every bore, and the extension line of its axis of symmetry passes through institute
State the center of circle of rotor body.
Preferably, in above-mentioned rotor core, it is described every bore be isosceles triangle hole, scallop hole or isosceles trapezoid hole.
Preferably, in above-mentioned rotor core, the outside hole face every bore is formed between the rotor body outer wall
First every magnetic bridge, and described first is C every the width of magnetic bridge, and it is D that the rotor core, which is used for the gas length that stator coordinates,；
2.9≥C/D≥1.3。
Preferably, in above-mentioned rotor core, 2.1 >=C/D >=1.5.
Preferably, in above-mentioned rotor core, the radian every bore is A, shared by the single magnetic pole of the rotor core
Angle is F；0.13≥A/F≥0.08.
Preferably, in above-mentioned rotor core, the length of the radial direction every bore along the rotor body is J, institute
The radius for stating rotor body is R；
0.32≥J/R≥0.1。
Preferably, in above-mentioned rotor core, the minimum range of the entity part between bore and the fixing hole is big
In 1.5mm；
The inner side point I every bore and the magnet steel groove minimum range are more than 1.5mm.
Preferably, in above-mentioned rotor core, it is described every bore be non-axis symmetry shape, inner side point I every bore
In it is described every bore close to the position of the magnet steel groove.
Preferably, it is described to be formed between bore and the magnet steel groove second every magnetic bridge in above-mentioned rotor core, described the
Two width every the outside of magnetic bridge is more than the width on the inside of it.
Preferably, in above-mentioned rotor core, described second every magnetic bridge close to the outside of the rotor body two end points
The angle with the line in the rotor body center of circle is E respectively, and angle shared by the single magnetic pole of the rotor core is F；
0.2≥E/F≥0.15。
Preferably, in above-mentioned rotor core, lines and institute of the inner side point I every bore with the rotor body center of circle
It is G to state the angle between the center line of magnet steel groove, and angle shared by the single magnetic pole of the rotor core is F；
0.37≥G/F≥0.3。
Present invention also offers a kind of tangential rotor, including rotor core and the tangential magnetic that is arranged in its magnet steel groove
Change permanent magnet, the rotor core is rotor core as described above described in any one.
Present invention also offers a kind of tangential motor, including tangential rotor and stator, it is characterised in that described tangential
Rotor is tangential rotor as described above.
Preferably, there is stator slot and towards the tangential rotor and institute in above-mentioned tangential motor, on the stator
The notch of the air gap of stator is stated, the width of the notch is K, the circumferential width every bore along the rotor core is H；
H=(0.94~1.37) K.
It can be seen from above-mentioned technical scheme that, the rotor core that provides of the present invention, by two neighboring magnet steel groove it
Between rotor magnetic pole on 2N is set every bore so that 2N rotor magnetic pole is symmetricly set in every bore pole center line two
Side；Because fixed hole position is in the centre of rotor magnetic pole so that on same rotor magnetic pole, the both sides of fixing hole be respectively provided with it is N number of every
Bore, the both sides of fixing hole it is N number of symmetrical every bore.It is located at side of the fixing hole close to rotor body edge every bore；
Increase every the center of circle of the width along rotor body of bore to the direction on the outside of it, close to two of pole center line between bore
The width of magnetic pole entity part increase along its outer lateral center of circle direction of rotor body so that two magnetic poles between bore
Entity part is broadened by the direction of the outer lateral fixing hole of rotor body, effectively be ensure that the position of fixing hole is avoided and is opened every magnetic
Hole, it is ensured that fixing hole is opened up on the rotor magnetic pole of rotor body and every the mechanical strength after bore；Also, it is located at every bore solid
Determine side of the hole close to rotor body edge, it is shorter every distance of the bore apart from rotor body edge, in order to every bore with making
The formation of rotor body edge is every magnetic bridge, and having effectively played improves the magnetic flux trend of rotor magnetic pole so that air gap flux density, back-emf ripple
Shape sine degree is improved, the effect of reduction harmonic wave accounting and harmonic loss, effectively the vibrating noise of reduction motor, improves motor effect
Rate.
Present invention also offers a kind of tangential rotor and tangential motor with above-mentioned rotor core.Due to above-mentioned turn
Sub- iron core has above-mentioned technique effect, and tangential rotor and tangential motor with above-mentioned rotor core should also have same
Technique effect, no longer tires out state herein one by one.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structural representation of tangential motor provided in an embodiment of the present invention；
Fig. 2 is the first structural representation of tangential rotor provided in an embodiment of the present invention；
Fig. 3 is second of structural representation of tangential rotor provided in an embodiment of the present invention；
Fig. 4 is the structural representation of stator provided in an embodiment of the present invention；
Fig. 5 is back-emf harmonic wave accounting provided in an embodiment of the present invention and C/D relation schematic diagram.
Embodiment
The invention discloses a kind of rotor core, to reduce the vibrating noise of motor.Have present invention also offers one kind
The tangential rotor and tangential motor of above-mentioned rotor core.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Fig. 1-Fig. 3 is refer to, the embodiments of the invention provide a kind of rotor core, including rotor body 1 and magnet steel groove 2,
Magnet steel groove 2 is arranged on rotor body 1.Having fixing hole 11 and 2N on rotor body 1, N is positive integer every bore 12, fixed
Hole 11 is used for fixed rotor punching.Fixing hole 11 and 2N are arranged at the rotor magnetic between two neighboring magnet steel groove 2 every bore 12
On extremely, fixing hole 11 is arranged at the centre of rotor magnetic pole, the individual pole center lines that rotor magnetic pole is symmetricly set in every bore 12 of 2N
Both sides, are located at side of the fixing hole 11 close to the edge of rotor body 1 every bore 12；Every bore 12 width along rotor body 1
The center of circle increases to the direction on the outside of it, also, two magnetic pole entity parts between bore 12 of close pole center line
Width increases along its outer lateral center of circle direction of rotor body 1.
Rotor core provided in an embodiment of the present invention, by being set on the rotor magnetic pole between two neighboring magnet steel groove 3
2N every bore 12 so that the individual pole center line both sides that rotor magnetic pole is symmetricly set in every bore 12 of 2N；Due to fixing hole 11
Positioned at the centre of rotor magnetic pole so that on same rotor magnetic pole, the both sides of fixing hole 11 be respectively provided with it is N number of every bore 12, it is fixed
The both sides in hole 11 it is N number of symmetrical every bore 12.It is located at side of the fixing hole 11 close to the edge of rotor body 1 every bore 12；
Increase every the center of circle of the width along rotor body 1 of bore 12 to the direction on the outside of it, close to two of pole center line every bore
The width of magnetic pole entity part between 12 increases along its outer lateral center of circle direction of rotor body 1 so that two every bore 12
Between magnetic pole entity part broadened by the direction of the outer lateral fixing hole 11 of rotor body 1, effectively ensure that fixing hole 11
Position avoids and opened every bore 12, it is ensured that fixing hole 11 is opened up on the rotor magnetic pole of rotor body 1 and every the machinery after bore 12
Intensity；Also, it is located at fixing hole 11 close to the side at the edge of rotor body 1 every bore 12, every bore 12 apart from the side of rotor body 1
The distance of edge is shorter, in order to, with making the formation of the edge of rotor body 1 every magnetic bridge, effectively play improvement rotor magnetic pole every bore 12
Magnetic flux trend so that air gap flux density, counter potential waveform sine degree improve, reduction harmonic wave accounting and harmonic loss effect, drop
The vibrating noise of low motor, improves electric efficiency.
It is understood that the width of two magnetic pole entity parts between bore 12 is it along perpendicular to rotor body
The distance between 1 both sides of radial direction.Every bore 12 width for its along perpendicular to rotor body 1 radial direction two
The distance between side opening wall.
Preferably due to increase every the center of circle of the width along rotor body 1 of bore 12 to the direction on the outside of it so that every magnetic
The Edge Distance pole center line in hole 12 is nearer, i.e., two nearer every the distance between bore 12, and two are between bore 12
Thin interior thickness outside core configuration at pole center line.
Wherein, fixing hole 11 is preferably rivet hole, or screwed hole.
It is understood that the quantity of magnet steel groove 3 is more than or equal to 4 even number, permanent magnet is located in magnet steel groove 2, adjacent
Two permanent magnets there is identical polarity to be oppositely arranged.
In the present embodiment, N is 1, i.e. two are respectively provided with each rotor magnetic pole every bore 12, and two every 12 pairs of bore
Claim the pole center line both sides for being arranged at rotor magnetic pole.
Further, it is axially symmetric structure every bore 12, the extension line of its axis of symmetry passes through the center of circle of rotor body 1.
As shown in Figures 1 and 2, in the present embodiment, preferably isosceles triangle hole will be set to every bore 12.
Scallop hole or isosceles trapezoid hole can also will be set every bore 12, may be arranged as other structures, herein no longer
It is discussed in detail and within protection domain.
Preferably, every the outside hole face of bore 12 to forming first between the outer wall of rotor body 1 every magnetic bridge, first every magnetic bridge
Width be C, rotor core be used for stator coordinate gas length be D；Found by simulation study, first every magnetic bridge width
Degree C and gas length D ratio has considerable influence to back-emf harmonic wave accounting.By first every magnetic bridge width C and gas length D
Ratio be arranged to C/D >=1.3, limitation sub-fraction magnetic flux first is transmitted by this every magnetic bridge, improves magnetic flux bang path
And air-gap field distribution, air gap flux density harmonic wave accounting and back-emf harmonic wave accounting are reduced, vibration noise is reduced.But, when
When C/D is more than 2.9, first every magnetic bridge width C it is excessive, the magnetic flux transmitted along first every magnetic bridge is excessive, and air gap magnetic density waveform is abnormal
Become, the increase of harmonic wave accounting, the increase of motor oscillating noise.It is therefore preferred that 2.9 >=C/D >=1.3.
Wherein, first every the width C of magnetic bridge be outside hole face every bore 12 the distance between to the outer wall of rotor body 1.
Further, 2.1 >=C/D >=1.5.Found through simulation study, when C/D ratio is arranged between 1.5 and 2.1
When, air-gap field distribution is optimal, and the sine degree of air gap flux density is optimal, and air gap flux density harmonic wave accounting is minimum, back-emf harmonic wave accounting
Minimum, motor oscillating noise is minimum, and harmonic loss now is minimum, electric efficiency highest.As shown in figure 5, on this condition,
The harmonic wave accounting for the motor that the present embodiment is provided is less than 10%.
It is A every the radian of bore 12, angle shared by the single magnetic pole of rotor core is F；Found by simulation study, every magnetic
The radian A in hole 12 and angle F shared by magnetic pole ratio has considerable influence to back-emf harmonic wave accounting.A/F is set greater than or
During equal to 0.08, magnetic flux can be improved and moved towards along the magnetic flux in rotor magnetic pole, and then improve air-gap field so that the air gap of magnetic circuit
Magnetic conductance evenly, improves air gap magnetic density waveform sine degree, and reduction air gap flux density, back-emf harmonic wave accounting reduce vibration noise, but
A/F is nor be the bigger the better, and excessive every bore width after more than 0.13, the magnetic flux of rotor magnetic pole centerline is very few, rotor
The magnetic flux concentrations of magnetic pole both sides, cause air-gap field skewness, and air gap, the increase of back-emf harmonic wave accounting, iron loss increase,
Magnetic pole area is smaller simultaneously, the easy saturation of pole flux, and total magnetic flux reduces, and motor output torque reduces, and electric efficiency declines.0.13
≥A/F≥0.08。
Wherein, the center of circle due to the width every bore 12 along rotor body 1 increases to the direction on the outside of it, every bore 12
Radian A is every the radian shared by outside hole wall of the bore 12 close to the outside of rotor body 1.Every bore 12 outside hole wall be bar shaped
Hole wall of the hole close to the outside of rotor body 1.
Further, the length of the radial direction every bore 12 along rotor body 1 is J, and the radius of rotor body 1 is R；It is logical
Simulation study discovery is crossed, it is larger to harmonic effects every the length J and the radius R of rotor body 1 of bore 12 ratio.It is appreciated that
, every radial direction extension of the bore 12 along rotor body 1, every the top apex of bore 12 and bottom apex in rotor radial side
To distance definition be every bore 12 length J.With the increase of the length J every bore 12, every the bottom of bore 12 closer to
The rotating shaft 3 of rotor.It is longer every the length of bore 12 as J/R >=0.1, it can limit in the rotor magnetic pole of the part of rotating shaft 3
Magnetic flux trend so that improve air-gap field distribution so that air gap flux density, back-emf harmonic wave accounting reduce, motor oscillating noise
Reduce.But, excessive every the length of bore 12 as J/R ＞ 0.32, magnetic conduction magnetic pole area mistake excessive every the area of bore 12
Small, while the easy saturation of magnetic pole, the torque pulsation of motor is increased, motor output drop, electric efficiency declines.Therefore, the present embodiment
In, 0.32 >=J/R >=0.1.
Preferably, the minimum range of entity part is more than 1.5mm between bore 12 and fixing hole 11.Set by above-mentioned
Put, the mechanical strength of motor rotor construction can be improved.
Further, it is more than 1.5mm with the minimum range of magnet steel groove 2 every the inner side point I of bore 12.Wherein, point I in inner side is
Every the point nearest apart from the center of circle of rotor body 1 of bore 12.By above-mentioned setting, the mechanical structure for improving rotor is strong
Degree.
In the present embodiment, due to being axially symmetric structure every bore 12, justify every inner side point I and the rotor body 1 of bore 12
The line of the heart is the symmetry axis every bore 12.
As shown in figure 3, in another embodiment, every bore 12 be non-axis symmetry shape, every inner side point I of bore 12
In every bore 12 close to the position of magnet steel groove 2.That is, every bore 12 towards the side of magnet steel groove 2 along the side to the center of circle of rotor body 1
Tilted to the direction of magnet steel groove 2, point I is closer to magnet steel groove 2 on the inside of the bore, and two of close pole center line every bore 12
Between the width of magnetic pole entity part strengthen along the outer lateral increased degree in its center of circle direction of rotor body 1.
Further, second is formed between bore 12 and magnet steel groove 2 every magnetic bridge, the second width every the outside of magnetic bridge is big
The width of side in the inner.
Preferably, second every magnetic bridge close to the outside of rotor body 1 two end points company respectively with the center of circle of rotor body 1
The angle of line is E, and angle shared by the single magnetic pole of rotor core is F；Found by simulation study, the second angle on the outside of magnetic bridge
Degree and the ratio of angle shared by magnetic pole have considerable influence to back-emf harmonic wave accounting, every bore close to permanent magnet trough, i.e., close to forever
Magnet, every being air in bore, therefore can change trend of the magnetic flux of permanent magnet in rotor magnetic pole, when every magnetic bridge 2 every bore
When being designed to wide at the top and narrow at the bottom, during and 0.2 >=E/F >=0.15, it can preferably improve the magnetic flux trend in rotor magnetic pole so that gas
Evenly, harmonic wave accounting is lower for gap Distribution of Magnetic Field, and motor oscillating noise is lower.
Preferably, between the inner side point I and the line in the center of circle of rotor body 1 and the center line of magnet steel groove 2 of bore 12
Angle is G；Angle shared by the single magnetic pole of rotor core is F.Found by simulation study, every the inner side point I and magnetic of bore 12
The distance of steel tank 2 has considerable influence to back-emf harmonic wave accounting.Every bore bottom close to permanent magnet, when 0.37 >=G/F >=0.3
When, the magnetic flux trend in rotor magnetic pole can be improved, and then improve the distribution of air-gap field, reduction air gap, back-emf harmonic wave are accounted for
Than reducing motor oscillating noise, reducing harmonic loss, improve electric efficiency.It is therefore preferred that 0.37 >=G/F >=0.3.
The embodiment of the present invention additionally provides a kind of tangential rotor, including rotor core and is arranged in its magnet steel groove
Tangential magnetization permanent magnet, rotor core is any rotor core as described above.Because there is above-mentioned rotor core above-mentioned technology to imitate
Really, the tangential rotor with above-mentioned rotor core should also have same technique effect, no longer tire out one by one state herein.
The embodiment of the present invention additionally provides a kind of tangential motor, including tangential rotor and stator, tangential rotor
For tangential rotor as described above.Because above-mentioned tangential rotor has above-mentioned technique effect, turn with above-mentioned tangential motor
The tangential motor of son should also have same technique effect, no longer tire out one by one state herein.
As shown in Fig. 1 and Fig. 4, in above-mentioned tangential motor, on stator have stator slot 41 and towards tangential rotor with
The notch 42 of the air gap of stator, the width of notch 42 is K, every circumferential width of the bore 12 along rotor core be H.That is, every magnetic
The width of the outside hole face in hole 12 is H.Every the rotor core that bore 12 is tangential rotor every bore 12.Through simulation study
It was found that, it is larger on the back-emf harmonic wave accounting influence of motor every the width H of the bore 12 and width K of notch 42, to motor oscillating
Influence of noise is larger, can improve magnetic flux trend every bore on rotor magnetic pole, stator rabbet can also improve magnetic flux trend, when
During H=(0.94~1.37) K, it can make it that motor gas-gap Distribution of Magnetic Field is more excellent, air gap flux density, back-emf harmonic wave accounting are lower,
Motor oscillating noise is lower, while degaussing armature reacting field that should be when the setting of bore can weaken motor operation, and then
Optimize the demagnetization capability of motor.It is therefore preferred that H=0.94~1.37K.
The embodiment of each in this specification is described by the way of progressive, and what each embodiment was stressed is and other
Between the difference of embodiment, each embodiment identical similar portion mutually referring to.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (15)
1. a kind of rotor core, including rotor body (1) and the magnet steel groove (2) that is arranged on the rotor body (1), its feature
It is, 2N is provided with the rotor magnetic pole between the two neighboring magnet steel groove (2) every bore (12) and for fixed rotor
The fixing hole (11) of punching, N is positive integer；
The fixing hole (11) is arranged at the centre of the rotor magnetic pole, and described turn is symmetricly set in every bore (12) described in 2N
The pole center line both sides of sub- magnetic pole, it is described to be located at the fixing hole (11) close to the rotor body (1) side every bore (12)
The side of edge；
The center of circle of the width every bore (12) along the rotor body (1) increases to the direction on the outside of it, also, close to institute
The width of magnetic pole entity part described in two of pole center line between bore (12) is stated along the outer of the rotor body (1)
Lateral its center of circle direction increase.
2. rotor core as claimed in claim 1, it is characterised in that described is axially symmetric structure every bore (12), and its is symmetrical
The extension line of axis passes through the center of circle of the rotor body (1).
3. rotor core as claimed in claim 2, it is characterised in that it is described every bore (12) be isosceles triangle hole, sector
Hole or isosceles trapezoid hole.
4. rotor core as claimed in claim 1, it is characterised in that the outside hole face every bore (12) to the rotor
First is formed between body (1) outer wall every magnetic bridge, described first is C every the width of magnetic bridge, and the rotor core is used for and stator
The gas length of cooperation is D；
2.9≥C/D≥1.3。
5. rotor core according to claim 4, it is characterised in that 2.1 >=C/D >=1.5.
6. rotor core as claimed in claim 1, it is characterised in that the radian every bore (12) is A, the rotor iron
Angle shared by the single magnetic pole of core is F；0.13≥A/F≥0.08.
7. rotor core as claimed in claim 1, it is characterised in that it is described every bore (12) along the rotor body (1)
The length of radial direction is J, and the radius of the rotor body (1) is R；
0.32≥J/R≥0.1。
8. rotor core as claimed in claim 1, it is characterised in that described between bore (12) and the fixing hole (11)
The minimum range of entity part is more than 1.5mm；
The inner side point I every bore (12) and the minimum range of the magnet steel groove (2) are more than 1.5mm.
9. rotor core as claimed in claim 1, it is characterised in that it is described every bore (12) be non-axis symmetry shape, it is described
It is located at the position every the close magnet steel groove (2) of bore (12) every the inner side point I of bore (12).
10. rotor core as claimed in claim 1, it is characterised in that described between bore (12) and the magnet steel groove (2)
Second is formed every magnetic bridge, the described second width every the outside of magnetic bridge (12) is more than the width on the inside of it.
11. rotor core as claimed in claim 10, it is characterised in that described second every magnetic bridge close to the rotor body
(1) angle of two end points in outside respectively with the line in the rotor body (1) center of circle is E, the list of the rotor core
Angle shared by individual magnetic pole is F；
0.2≥E/F≥0.15。
12. rotor core as claimed in claim 1, it is characterised in that the inner side point I every bore (12) and the rotor
Angle between the line in body (1) center of circle and the center line of the magnet steel groove (2) is G, the single magnetic pole of the rotor core
Shared angle is F；
0.37≥G/F≥0.3。
13. a kind of tangential rotor, including rotor core and the tangential magnetization permanent magnet that is arranged in its magnet steel groove, its feature
It is, the rotor core is the rotor core as described in claim any one of 1-12.
14. a kind of tangential motor, including tangential rotor and stator, it is characterised in that the tangential rotor is as weighed
Profit requires the tangential rotor described in 13.
15. motor as claimed in claim 14 tangential, it is characterised in that there is stator slot (41) and towards institute on the stator
The notch (42) of tangential rotor and the air gap of the stator is stated, the width of the notch (42) is K, described every bore (12)
It is H along the circumferential width of the rotor core；
H=(0.94~1.37) K.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710677509.3A CN107248793B (en) | 2017-08-09 | 2017-08-09 | Tangential motor, tangential motor rotor and rotor core thereof |
Applications Claiming Priority (1)
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110311528A (en) * | 2019-07-08 | 2019-10-08 | 苏州市润豪电机有限公司 | A kind of two extremely embedded brshless DC motors |
| CN111614176A (en) * | 2020-05-11 | 2020-09-01 | 珠海格力电器股份有限公司 | Rotor structure, motor and vehicle |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2636480A1 (en) * | 1988-08-01 | 1990-03-16 | Alsthom Gec | Synchronous motor with permanent magnets |
| KR20080048596A (en) * | 2006-11-29 | 2008-06-03 | 전자부품연구원 | Brushless motor of interior rotor type with decreased cogging torque |
| CN207234638U (en) * | 2017-08-09 | 2018-04-13 | 珠海格力节能环保制冷技术研究中心有限公司 | Tangential motor, tangential rotor and its rotor core |
-
2017
- 2017-08-09 CN CN201710677509.3A patent/CN107248793B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2636480A1 (en) * | 1988-08-01 | 1990-03-16 | Alsthom Gec | Synchronous motor with permanent magnets |
| KR20080048596A (en) * | 2006-11-29 | 2008-06-03 | 전자부품연구원 | Brushless motor of interior rotor type with decreased cogging torque |
| CN207234638U (en) * | 2017-08-09 | 2018-04-13 | 珠海格力节能环保制冷技术研究中心有限公司 | Tangential motor, tangential rotor and its rotor core |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110311528A (en) * | 2019-07-08 | 2019-10-08 | 苏州市润豪电机有限公司 | A kind of two extremely embedded brshless DC motors |
| CN111614176A (en) * | 2020-05-11 | 2020-09-01 | 珠海格力电器股份有限公司 | Rotor structure, motor and vehicle |
| CN111614176B (en) * | 2020-05-11 | 2022-03-15 | 珠海格力电器股份有限公司 | Rotor structure, motor and vehicle |
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| Publication number | Publication date |
|---|---|
| CN107248793B (en) | 2023-06-20 |
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