CN109314419A - The rotor core used with permanent magnet or the electric machine used with this rotor core - Google Patents
The rotor core used with permanent magnet or the electric machine used with this rotor core Download PDFInfo
- Publication number
- CN109314419A CN109314419A CN201780034016.6A CN201780034016A CN109314419A CN 109314419 A CN109314419 A CN 109314419A CN 201780034016 A CN201780034016 A CN 201780034016A CN 109314419 A CN109314419 A CN 109314419A
- Authority
- CN
- China
- Prior art keywords
- permanent magnet
- recess
- towards
- rotor core
- shape design
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- 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
Abstract
It include two permanent magnets (101 by every magnetic pole of the rotor core (100) for having magnetic conduction ability of the rotor for the electric machine that permanent magnet motivates for lower torque ripple and higher torque and in the " V " shape design (101,102) opened towards rotor exterior face (104) for rotor;It 102) include, and for each permanent magnet the side (115 towards rotor exterior face with the permanent magnet;116) adjacent, extending towards rotor exterior face and pass through connection bridge part (113 from this;114) recess (111 at edge is constituted;112).Each of recess is in external its edge part (119 being directed toward that the peripheral direction (105) along rotor core is designed towards " V " shape;120) there is the support shoulder (121 for permanent magnet in;122) and in its edge part (123 being internally pointed to designed towards " V " shape;124) there is forming part (125 in;126).The forming part protrudes past the plane of the pole-face (127) of the inside towards " V " shape design of permanent magnet towards the inside that " V " shape designs.
Description
Technical field
The present invention relates to a kind of rotor core (Rotorkern).Turn in addition, the present invention relates to a kind of with such rotor core
Sub, a kind of electric machine (elektrische Maschine, otherwise referred to as motor) and one kind with such rotor has this
The vehicle of class machine.
Background technique
10 2,013 219 020 A1 of file DE shows a kind of electric rotary machine, which, which has, has stator
The stator of winding and rotor with the rotor core for having magnetic conduction ability are embedded with multiple groups in the rotor core and are in internal permanent
Magnet (Dauermagnete), wherein each group has a pair of of permanent magnet per great, and the permanent magnet is designed with " V " shape
(Gestaltung, otherwise referred to as shape) arrangement, which designs opens towards the outer peripheral edge of rotor.For each pair of
Permanent magnet, rotor are implemented as with one group of opening, and the opening is arranged in " V " shape design, and " V " shape design direction is external
Periphery open, so as to make respectively more than its length rectangle having the same cross-sectional profiles and in the axis along rotor axis
It is fixedly accommodated to the permanent magnet just upwardly extended, is inserted into its turning (Ecke) in opening group by license.
Every group of opening includes following magnet opening, and the magnet opening is designed in this way, so that the magnet openings house
The permanent magnet of respective sets and including the first opening and the second opening, first opening is arranged in each of permanent magnet
On and mutually along the direction of its width separate and be used as external throughput barrier (Flussbarriere, otherwise referred to as
Flow obstacle), to prevent magnetic flux (Magnetfluss, otherwise referred to as magnetic current) from rotating around permanent magnet, described second is opened
Mouth is between each pair of permanent magnet and is used as internal throughput barrier.Intermediate axle is in the second opening of each pair
Between, the intermediate axle extends along the radial direction of rotor axis, it is connected so that the inside seamed edge of opening will be limited with outer edge,
It is kept in position so that permanent magnet is overcome the centrifugal force generated when rotor at a high speed rotates.Internal flux barrier
Hinder more most than external throughput barrier times.Rotor by biggish internal throughput barrier and by every magnetic pole rotor outer peripheral edge
The magnetic lines of flux of stator winding is effectively divided and is separated into two by the medial launder at place.This causes, and rotor efficiently generates magnetic
The moment of resistance (Reluktanzmoment), and torque ripple (Drehmomentenwelligkeit) is restricted, and torque quilt
Improve.
Summary of the invention
The present invention has following task, in the situation of the rotor for the electric machine of described type motivated by permanent magnet
It further decreases torque ripple and increases average torque.
The task has the rotor core of magnetic conduction ability to solve by a kind of rotor of electric machine motivated by permanent magnet, should
Rotor core
At least two permanent magnets are had for every magnetic pole of rotor, the permanent magnet is to open towards rotor exterior face
" V " shape design arrangement,
Each recess (Ausnehmung) is had for each of the permanent magnet of " V " shape design,
Each flank abutment towards rotor exterior face of zero recess and the permanent magnet of " V " shape design
Zero and from the side towards rotor exterior face extend,
Zero designs the connection at the end side of recess by being formed in rotor core relative to the rotor exterior face, the V-arrangement
Bridge part constitutes edge,
Wherein, each of described recess
Zero has in external its edge part being directed toward that the peripheral direction along rotor core is designed towards " V " shape and is designed as being used for
The shaping sector (Einformung, otherwise referred to as inside shaping sector) of the support shoulder of permanent magnet,
Zero and its edge part being internally pointed to for being designed in the peripheral direction along rotor core towards " V " shape in there is forming part
(Ausformung, otherwise referred to as outside forming part),
Wherein, which protrudes past the inside towards " V " shape design of permanent magnet towards inside that " V " shape designs
The plane of pole-face (Polfl che).
The rotor core designed according to the present invention as a result, has two or more permanent magnets for every magnetic pole of rotor, from
A portion is all but at least two with " V " shape design arrangement.In particular, permanent magnet is seen in the sagittal plane of rotor
It is at least almost cross section of rectangle, and at least almost prolongs in the axial length of rotor core along the axial direction of rotor
It stretches.Preferably, in the situation of the cross section of the rectangle of permanent magnet, two pole-faces and two sides are formed, wherein permanent magnetic
Body " flatly " design, that is to say, that pole-face has the size bigger than side.In " V " shape design, two permanent magnets
The pole-face of pole of the same name turns to each other, however each side is directed toward or is orientated radially inward and radially outward；The latter because
This is towards rotor exterior face.
Each one in the recess designed according to the present invention with each adjoining in these sides outwardly, and
The connection bridge part being made of the permeability magnetic material of rotor core is extended up to towards rotor exterior face；The connection bridge part by recess with
Rotor exterior face separates.Advantageously, which in this rough approximation occupies the design on four sides, that is to say, that its edge part
(Berandung) four sections are divided into:
Along the first section of the side of permanent magnet, and
Along the second section of connection bridge part；
The two sections at least most of parts are designed to until at least almost straight line；
Peripherally direction turns to (zugekehrt) for the external of " V " shape design of permanent magnet to third section, and designs
At with shaping sector that is jagged, forming support shoulder or tapered portion or narrow part or diminution portion or narrowing, permanent magnet with
One section of its side being directed toward radially outward, especially end section especially overcome centrifugal force to be supported at the support shoulder；
Peripherally direction and is configured with forming part, i.e. for the internal turn of the " V " shape design of permanent magnet to 4th section
Protrusion (Ausbuchtung) designs internal broadening towards " V " shape by the forming part recess, that is increases, more precisely
Say that the forming part extends over the pole-face of permanent magnet being directed toward towards the design of internal " V " shape in ground, that is to say, that be more than following flat
Face, which is unfolded by the pole-face or the pole-face is in the plane.
These third and fourth sections of the edge part of recess are not straight preferably for most of parts of its extension
Design to line, but cavetto (ausgerundet, otherwise referred to as rounding) design, as then also moreed specifically explain
Like that.
Preferably, the radial axis that recess designs the permanent magnet that identical " V " shape designs relative to the " V " shape
Line is arranged symmetrically and designs.
The present invention realizes the following design scheme of rotor core, design scheme mechanical strength with higher and mechanical stress
Thus good distribution and very small torque ripple in operation simultaneously have and generate (Ger with lesser noise
Uschentwicklung biggish smoothness of operation (Laufruhe)).Magnetic flux can be in order to realize rotor core and there are also forever
The utilization of the improvement of the quality of the material of such rotor core of long magnet and controlled in the rotor core, that is to say, that rotor
Core, in operation not by magnetic flux or only by magnetic flux slightly past region still largely by with rotor core
The construction that raw material is carried out forecloses.Here, by shaping sector, that is support shoulder realizes permanent magnet in rotor core
In force-fitting and shape cooperation, it is effective fixed.In addition, recess is very well protected from or at least reduces in permanent magnet
Pole between magnet short-cut path.On the other hand, the magnetic flux of permanent magnet is particularly suitable for ground, targetedly and effectively redirect to
In the stator of electric machine, this facilitates the reduction of noise generation.In addition, being made by the bunchy of magnetic flux realized so-called hidden
Pole moment (Vollpolmoment) is promoted, to can export extra high power in the case where allowing higher electrodynamic situation.
The mechanical load occurred is effectively born by connection bridge part.
Advantageous design scheme of the invention shows in the dependent claims.
A kind of preferred improvement project of rotor core according to the present invention is shown i.e. by following
The straight line of the end side of the side and recess of permanent magnet, intermediate section it is preset, design towards " V " shape it is outer
It is arranged under the angle that portion opens,
Maximum length of the recess between the side of permanent magnet and the end side of recess is in turning to for shaping sector for recess
Edge part at, that is towards " V " shape design it is external be directed toward, and
Minimum length of the recess between the side of permanent magnet and the end side of recess is in turning to for forming part for recess
Edge part at, that is towards " V " shape design be internally pointed to.
In other words, the edge part of recess turned to for shaping sector or support shoulder forms shaping sector or support shoulder or sets
It counts into shaping sector or support shoulder.In a manner of it can compare, the edge part of recess turned to for forming part forms molding
Portion, that is to say, that the edge part is designed with forming part.The rough approximation of recess four sides design so with retouched above
Four sections of the edge part stated form the quadrangle at oblique angle, the external opening which designs towards " V " shape.So that
The region as big as possible of the radial cross section of rotor core is covered by recess, that is to say, that the recess is radial rotor core
Extend and thereby assist in the reduction of the quality of rotor core on the part as big as possible of cross section.Meanwhile this of recess is set
Meter scheme facilitates the also better control of magnetic flux, and thereby assists in further promotion and the torque ripple of average torque
Further decrease.
Another preferred embodiment of rotor core according to the present invention by showing as follows, that is,
Connect bridge part along the end side of recess straight line, intermediate section have it is at least nearly constant or towards " V "
The width of radial direction determination that the inside of shape design is gradually reduced, along rotor core, and
Determined depending on this end side of the side and recess of permanent magnet straight line, angle between intermediate section
Degree.
Angle between the side of permanent magnet and the end side of recess thus on the one hand by connection bridge part its most
Wide preset between its most narrow position is tapered to obtain, or, when end side is at least nearly parallel to rotor exterior
Face or when being parallel to relative to rotor exterior face tangential direction in the region of recess and extending, passes through the extension of connection bridge part
Direction obtains, on the other hand the position by the permanent magnet of curvature and the " V " shape design in rotor exterior face in rotor core
It is obtained with gradient.If here, connection bridge part width and be possible to the width be tapered by operation to
The mechanical stress of receiving determines, wherein if in order to save the material of rotor core and it is possible that in order to obtain in the region
Magnetic conduction ability as small as possible is with for reducing undesirable magnetic flux, selection connects the width of bridge part as small as possible.
According to another embodiment of rotor core according to the present invention,
Forming part protrudes past the inside towards " V " shape design of permanent magnet with it towards the inside maximum that " V " shape designs
The scale (Ma, otherwise referred to as scale) of pole-face be pole of the permanent magnet in inside of the permanent magnet towards " V " shape design
Thickness between the pole-face of the outside towards " V " shape design of face and permanent magnet 5 to 20%, especially at least almost
10%,
And preferably, forming part carrys out cavetto with following radius, which is at least almost recess in the side of permanent magnet
Twice of minimum length between the end side of recess.
The spy of magnetic flux is obtained in the case where the extension as big as possible of recess by this design scheme of forming part
Not Shi Yi steering.The cavetto of forming part is also beneficial to this, wherein thus obtains the particularly suitable equal of mechanical stress simultaneously
It homogenizes.
One kind of rotor core according to the present invention is advantageously improved scheme by showing as follows i.e.
Shaping sector is maximum from the inside that the pole-face for the outside of permanent magnet designed towards " V " shape is designed towards " V " shape with it
The scale of rebound is permanent magnet in the pole-face of inside of the permanent magnet towards " V " shape design and permanent magnet towards " V "
Shape design outside pole-face between thickness 10 to 40%, preferably 20 to 30%, particularly preferably at least almost
27%,
And preferably, shaping sector carrys out cavetto with following radius, the radius
Zero is at least almost the half of minimum length of the recess between the side of permanent magnet and the end side of recess,
Zero particularly preferably at least nearly equalizes the radius that forming part is rounded off with it.
By shaping sector, that is support shoulder this construction, be not only similarly obtained magnetic flux to the greatest extent may be used in recess
Particularly suitable steering in the case where extension that can be high, and following design scheme is obtained, which realizes from permanent
Particularly suitable load transmission on magnet to support shoulder.Shaping sector supports the cavetto of shoulder to be also beneficial to this, this is repaired
Circle while the particularly suitable distribution for realizing mechanical stress.
Another preferred embodiment of rotor core according to the present invention by showing as follows, that is,
The edge part of recess is rounded off in the First Transition region between forming part and the end side of recess,
Cavetto is preferably come with following radius, the radius
Zero is at least almost 4/3rds of minimum length of the recess between the side of permanent magnet and the end side of recess,
Zero optionally at least nearly equalizes
■ Maximum length of the recess between the side of permanent magnet and the end side of recess,
■ Particularly preferably at least nearly equalize 0.9 times of the maximum length.
Another preferred embodiment according to the present invention, the rotor core by showing as follows, that is,
The edge part of recess is rounded off in the second transitional region between shaping sector and the end side of recess,
Cavetto is preferably come with following radius, the radius
Zero is at least almost 0.3 times of minimum length of the recess between the side of permanent magnet and the end side of recess,
Zero optionally at least nearly equalizes the 0.2 of maximum length of the recess between the side of permanent magnet and the end side of recess
Times.
The end side of described recess on the one hand and the on the other hand transitional region between support shoulder or forming part
Cavetto is for the mechanical stress in the material of rotor core in operation in the case where noticing the suitable steering of magnetic flux
Further homogenization.
In addition, above mentioned task is solved by a kind of electric machine motivated by permanent magnet, before which passes through
The rotor for the type that face illustrates and/or shown by the rotor core of previously described structure type.Such machine preferably may be used
The vehicle for the driver that be used to feed with electric drive, preferably battery, especially road vehicle traction driver.Root
Allow according to machine of the invention with high-revolving operation, average torque with higher and only still very small in all cases
Torque ripple.Thus it can not only improve traction behavior, but also reduce noise and generate, thus promote the vehicle being so equipped with
Driving comfort and road horsepower.
The size of recess can the different design schemes and size from the different rotor core of the electric machine of different configuration set
Meter matches and therefore allows the biggish flexibility in terms of topology layout.Recess according to the present invention additionally makes to be originated from
The magnetic flux of two permanent magnets of " V " shape design turns to, what the sum for the reinforcement in the stator to electric machine was homogenized
The magnetic flux that the sum of magnetic field or reinforcement is homogenized, thus in addition to reducing torque ripple and thus subtracting directly noise generation
The promotion of so-called non-salient pole torque is also obtained other than small.
The " V " shape of the two permanent magnets, basic as the present invention (the minimum magnet as every magnetic pole is arranged) is set
Meter can be supplemented optionally with other permanent magnet.Thus every magnetic pole simultaneously designs the " V " shape of the two permanent magnets
In each " V " shape design third permanent magnet can especially be added, the third permanent magnet is tangentially along the week of rotor core
Edge direction is at least almost relative to " V " shape design arrangement in centre.Recess according to the present invention is the case where this magnet is arranged
Under additionally make from " V " shape design two permanent magnets magnetic flux turn to, for before third permanent magnet plus
Thus the magnetic flux in strong magnetic field or reinforcement equally promotes non-salient pole torque.
Detailed description of the invention
In the accompanying drawings (in the figure, the consistent element in all figures be equipped with identical appended drawing reference, and for
The attached drawing is abandoned carrying out repeated description to these elements):
Fig. 1 shows the diagram of rotor core with rough schematical, axial view, wherein three permanent magnets of every magnetic pole,
Fig. 2 shows the rough signals in part for having a kind of rotor core of the recess of embodiment according to the present invention according to Fig. 1
The diagram of property, and
Fig. 3 shows turn of one in the recess with embodiment according to the present invention according to fig. 2 described in detail
The part for the amplification of the diagram of sub- core cut out.
The embodiment being shown in the accompanying drawings of the invention is described in greater detail below.
Specific embodiment
In Fig. 1, rotor core is indicated with appended drawing reference 100, if the rotor core is for the reality illustrated below the present invention
It applies based on example is used as.Rotor core 100 is under axial visual angle, i.e. along rotor core 100 and thus by the motor of permanent magnet excitation
Describe under the visual angle in the direction of the rotation axis 110 of the rotor of the building of the device rotor core.Rotor core 100 has such as ten herein
A magnetic pole.Each magnetic pole of rotor core 100 or the rotor for being built with the rotor core is arranged there are three permanent magnet 101,
102,103, from wherein, two permanent magnets 101,102 with towards rotor exterior face 104, that is open radially outward
101,102 arrangement of " V " shape design, and third permanent magnet 103 is tangentially along peripheral direction 105 and thus along rotor
The rotor exterior face 104 of core 100 relative to " V " shape design 101,102 radial central axes 106 at least almost in intermediate cloth
It sets.All permanent magnets 101,102,103 (as long as mechanical stability that the permanent magnet realizes rotor core 100) are closely squeezed
It is pressed at rotor exterior face 104.Along the peripheral direction 105 of rotor core 100, " V " shape design 101,102, that is by this two
The configuration angle of coverage range that the first permanent magnet 101 and the second permanent magnet 102 in a permanent magnet 101,102 are constituted
107, the angular range is equal to the pole span (Polteilung) of rotor core 100.It is every two adjacent, be associated in magnetic pole two
A adjacent pole and peripherally direction 105 by " V " shape design 101,102 covering angular range 107 transition, that is to say, that
Every two triangular arrangement in the triangular arrangement of permanent magnet 101,102,103 is in the peripheral direction 105 of rotor core 100
The position at place adjacent to each other is indicated in Fig. 1 by cutting line 108.It is abandoned in Fig. 1 thin in the structure to rotor core 100
Section is shown, and only describes permanent magnet 101,102,103 relative to the outer peripheral edge of rotor core 100, that is phase
For rotor exterior face 104 sum relative to armature spindle opening 109 arrangement.
In Fig. 2 with diagram schematical roughly enlargedly describe rotor core 100 along the cutting line 108 according to Fig. 1
There are three an angular ranges in the angular range 107 of permanent magnet 101,102,103 for the part that cuts out, that is band.
For " V " shape design 101,102 permanent magnet 101,102 in each permanent magnet, that is for this
The first permanent magnet 101 and the 2nd 102 permanent magnet in two permanent magnets 101,102, are each provided with recess (the first recess
111 or second recess 112), the recess is arranged in each area of space inside rotor core 100, the area of space with
First permanent magnet 101 of the permanent magnet 101,102 of " V " shape design or each one of the second permanent magnet 102 are towards rotor
The side 115 or 116 of exterior face 104 is adjacent.Recess 111 or 112 prolongs from the side 115 or 116 towards rotor exterior face 104
It stretches.Relative to rotor exterior face 104, recess 111,112 passes through at the end side 117 or 118 of related recess 111 or 112
The connection bridge part 113 or 114 formed in rotor core 100 (that is by the raw material of the rotor core) constitutes edge.Connection
Bridge part 113,114 is designed to advantageously be tapered towards radial central axes 106 along peripheral direction 105.
Each of recess 111,112 is in the peripheral direction 105 along rotor core 100 towards the outer of " V " shape design 101,102
There is the support being designed as the first permanent magnet 101 or the second permanent magnet 102 in the edge part 119 or 120 that portion is directed toward
The shaping sector 121 or 122 of shoulder.The peripheral direction 105 along rotor core 100 towards " V " shape design 101,102 inside,
That is each recess in recess 111,112 respectively has in the edge part 123 or 124 being directed toward towards radial central axes 106
Forming part 125 or 126.The inside of each of described forming part 125,126 towards " V " shape design 101,102 protrudes past permanently
The plane of the pole-face 127 or 128 of the inside towards " V " shape design 101,102 of magnet 101 or 102.
Recess 111,112 is designed and arranged symmetrically to each other about radial central axes 106.Along the axial direction of rotor core 100
Direction, that is along the direction of rotation axis 110, recess 111,112 is with constant cross section along permanent magnet 101,102
Extend through at least almost entire rotor core 100.
Fig. 3 shows the part of the amplification of the diagram from rotor core 100 according to fig. 2, with the detailed of the first recess 111
Description.The design of the first recess 111 is illustratively more fully described according to Fig. 3.Here, the second recess 112 is for first
It designs to recess mirror image, so as to abandon the individual description of the second recess 112.
In Fig. 3, for the sake of clarity, the first permanent magnet 101 is only roughly drawn into its profile (Umriss)；This
Outside, Fig. 3 only shows in rotor core 100, setting and determines into the recess 129 for accommodating the first permanent magnet 101, and
The position of the side 115 towards rotor exterior face 104 of first permanent magnet 101.First permanent magnet 101 is in the first permanent magnetic
The pole-face 127 of the inside towards " V " shape design 101,102 of body 101 and being designed towards " V " shape for the first permanent magnet 101
Thickness between the pole-face 130 of 101,102 outside is indicated with l1.
The side 115 (being then simplifiedly expressed as side 115) towards rotor exterior face 104 of first permanent magnet 101
Acute angle a1 is formed with the straight line of the end side 117 of the first recess 111, intermediate section 131.Angle a1 is designed towards " V " shape
(101,102) external opening.As a result, the first recess 111 formed oblique angle quadrangle star, turning however be rounded off herein, such as
As then also illustrating.
Along being parallel to the direction of pole-face 127,130, the oblique angle, the quadrangle through cavetto there is maximum length l4, this is most
The first recess 111 is consequently formed between the side 115 of the first permanent magnet 101 and the end side 117 of the first recess 111 in long length
Maximum length l4.The maximum length l4 be in the first recess 111 for 121 turns of shaping sector (that is supporting shoulder)
To edge part 119 at, be that is directed toward towards the external of " V " shape design 101,102.First recess 111 is permanent first
Minimum length l7 between the side 115 of magnet 101 and the end side 117 of the first recess 111 is (and along being parallel to pole-face 127,130
Orientation measurement) at the edge part 123 that the first recess 111 turns to forming part 125, that is towards " V " shape
Design 101,102 is internally pointed to.
End side of the connection bridge part 113 shown only sheared in Fig. 3 in the first recess 111 along the first recess 111
Have at least nearly constant in the previously described construction of 117 straight line, intermediate section 131 or is designed towards " V " shape
The width of radial direction measurement that 101,102 inside is gradually reduced, along rotor core 100.Depending on the width, determine the
Angle between the straight line of the side 115 of one permanent magnet 101 and the end side 117 of the first recess 111, intermediate section 131
a1。
Forming part 125 in edge part 123 designs 101,102 inside, that is towards radial direction towards " V " shape
The pole of the maximum inside towards " V " shape design 101,102 that the first permanent magnet 101 is protruded past with scale l5 in central axes 106
Face 127.According to the present invention, scale l5 is the first permanent magnet 101 designing towards " V " shape in the first permanent magnet 101
The pole-face 130 of the outside towards " V " shape design 101,102 of the pole-face 127 of 101,102 inside and the first permanent magnet 101
Between thickness l1 5 to 20%.Particularly preferably and in Fig. 3 correspondingly illustratively, scale l5 is at least almost
The 10% of the thickness l1 of first permanent magnet 101.
Here, forming part 125 preferably carrys out cavetto with radius R2, which is at least almost the first recess 111 first
Twice of minimum length l7 between the side 115 of permanent magnet 101 and the end side 117 of the first recess 111.Scale l5 is then true
It is set to the out to out in the apex of the cavetto with radius R2.
Pole-face 130 direction of the shaping sector 121 from the outside towards " V " shape design 101,102 of the first permanent magnet 101
The inside (that is in the apex of shaping sector) that " V " shape designs 101,102 is maximum with scale l6 rebound, and the scale is according to this
Invention be the first permanent magnet 101 thickness l1 10 to 40%, preferably 20 to 30%, particularly preferably at least almost
27%, and correspondingly also intercepted in Fig. 3.
Preferably, shaping sector 121 is also rounded off, more precisely, carry out cavetto with radius R3, which is at least almost the
The one of minimum length l7 of one recess 111 between the side 115 of the first permanent magnet 101 and the end side 117 of the first recess 111
Half.It is particularly preferred that the radius R3 that shaping sector 121 is rounded off with it at least nearly equalizes half that forming part 125 is rounded off with it
Diameter R2.This also describes in the embodiment according to Fig. 3 in this way.
As already mentioned, end side 117 and another aspect are recessed first on the one hand for the edge part of the first recess 111
Forming part 125 in mouthfuls 111 external edge part 119 being directed toward towards " V " shape design 101,102 or in the first recess 111
Towards " V " shape design 101,102 inside, that is towards 106 be directed toward edge part 123 in support shoulder 121 it
Between transitional region 132,133 in be rounded off.
The cavetto extend between end side 117 and forming part 125 in transitional region, in the first recess 111 first
There is radius R4 in transitional region 132.According to the present invention, radius R4 is really sized to the first recess 111 in the first permanent magnet
At least almost 4/3rds of minimum length l7 between 101 side 115 and the end side 117 of the first recess 111.Optionally,
Radius R4 can also be sized so that, so that the radius at least nearly equalizes the first recess 111 in the first permanent magnet 101
Maximum length l4 between side 115 and the end side 117 of the first recess 111.In size particularly preferred, being shown in FIG. 3
In design, radius R4 at least nearly equalizes 0.9 times of maximum length l4.
The external edge part being directed toward in transitional region, in the first recess 111 towards " V " shape design 101,102
The second transitional region extended between 119 shaping sector (that is supporting shoulder) 121 and the end side 117 of the first recess 111
In 133, which has radius R1.According to the present invention, radius R1 is at least almost the first recess 111 in the first permanent magnet
0.3 times of minimum length l7 between 101 side 115 and the end side 117 of the first recess 111.Optionally, radius R1 can also be with
It is sized so that, so that the radius at least nearly equalizes the first recess 111 in the side 115 of the first permanent magnet 101 and
0.2 times of maximum length l4 between the end side 117 of one recess 111.
It is parallel to pole-face 127,130 and therefore perpendicular to its thickness l1, the first permanent magnet 101 has width l3.
In addition, the thickness l1 that the first recess 111 is parallel to the first permanent magnet 101 have maximum width (Weite, sometimes referred to as
For width or span) l2, the maximum width by thickness l1, forming part 125 with its towards " V " shape design 101,102 it is interior
Portion, that is protruded past towards radial 106 maximum of central axes the first permanent magnet 101 pole-face 127 scale l5 and
Support shoulder 121 is determined with it from pole-face 130 towards the scale l6 of the inside maximum rebound of " V " shape design 101,102.It is preferred that
Ground, the thickness l1 of the first permanent magnet 101 are greater than the maximum width l2 of the first recess 111 only highest 10%, preferably at least
Almost just 8%.
Subsequent table describes a kind of size design of particularly preferred embodiment:
Briefly, a kind of rotor core for having magnetic conduction ability of the rotor of electric machine motivated by permanent magnet is proposed through the invention,
The rotor in order to lower torque ripple and higher torque in the " V " shape design opened towards rotor exterior face for turning
Every magnetic pole of son includes two permanent magnets, and includes with the permanent magnet towards rotor exterior for each permanent magnet
Recess that the is flank abutment in face, extending towards rotor exterior face and being made up of edge connection bridge part from this.Recess
Each of have in external its edge part being directed toward that the peripheral direction along rotor core is designed towards " V " shape for permanent magnetic
The support shoulder of body, and there is forming part in its edge part being internally pointed to designed towards " V " shape.The forming part direction
The inside of " V " shape design protrudes past the plane of the pole-face of the inside towards " V " shape design of permanent magnet.
Reference signs list
100 rotor cores
The permanent magnet of 101 " V " shapes design 101,102
The permanent magnet of 102 " V " shapes design 101,102
103 permanent magnets
104 rotor exterior faces, that is 100 outer peripheral edge
105 100 peripheral direction
The radial central axes of 106 " V " shapes design 101,102
107 are designed the angular range 107 of 101,102 coverings, the pole span equal to 100 along 105 by " V " shape
108 cutting lines indicate the transition of every two adjacent angular range 107
109 100 armature spindle opening
110 100 rotation axis
The first recess in 111 100 in 107
The second recess in 112 100 in 107
The 113 connection bridge part between 111 and 104
The 114 connection bridge part between 112 and 104
115 101 side towards rotor exterior face 104
116 102 side towards rotor exterior face 104
117 111 end side
118 112 end side
The 119 111 external edge part being directed toward towards " V " shape design 101,102
The 120 112 external edge part being directed toward towards " V " shape design 101,102
121 are used for 101 shaping sector/support shoulder in the 119 of 111
122 are used for 102 shaping sector/support shoulder in the 120 of 112
123 111 towards " V " shape design 101,102 inside, that is towards 106 be directed toward edge part
124 112 towards " V " shape design 101,102 inside, that is towards 106 be directed toward edge part
125 forming part in the 123 of 111
126 forming part in the 124 of 112
The pole-face of 127 101 inside towards " V " shape design 101,102
The pole-face of 128 102 inside towards " V " shape design 101,102
129 are used for 101 recess in 100
The pole-face of 130 101 outside towards " V " shape design 101,102
131 117 straight line, intermediate section
The 132 First Transition region between the 131 of 117 and the 125 of 123
133 the second transitional region between the 131 of 117 and 119
Angle of the a1 between the 115 of 101 and the 131 of 117
The thickness between the 127 of 101 and the 130 of 101 of l1 101
The maximum width for being parallel to l1 of l2 111
The width perpendicular to l1 of l3 101
Maximum length of the l4 111 along the direction for being parallel to 127,130
125 in l5 123 are protruded past with it towards the inside of " V " shape design 101,102, that is towards 106 maximums
The scale of 101 pole-face 127
121 scales to be knock-oned from pole-face 130 towards the inside maximum of " V " shape design 101,102 with it in l6 119
Minimum length of the l7 111 along the direction for being parallel to 127,130
The radius of the cavetto of R1 133
The radius of the cavetto of R2 125
The radius of the cavetto of R3 121
The radius of the cavetto of R4 132.
Claims (10)
1. a kind of rotor core (100) for having magnetic conduction ability of the rotor of the electric machine motivated by permanent magnet,
At least two permanent magnets (101 are had for every magnetic pole of rotor;102), at least two permanent magnet is with court
" V " shape design (101, the 102) arrangement opened to rotor exterior face (104),
For the permanent magnet (101 of " V " shape design (101,102);Each of 102) each recess is had
(111;112),
The permanent magnet (101 of zero recess and " V " shape design (101,102);102) each one is towards described turn
The side (115 of sub- exterior face (104);116) adjacent
Zero and from the side (115;116) extend towards the rotor exterior face (104),
Zero relative to the rotor exterior face, and the " V " shape design is in the recess (111;112) end side (117;118) place
Pass through the connection bridge part (113 formed in the rotor core (100);114) edge is constituted,
Wherein, the recess (111;Each of 112)
Zero is directed toward in the peripheral direction (105) along the rotor core (100) towards the external of " V " shape design (101,102)
Its edge part (119;120) have in and be designed as the permanent magnet (101;102) shaping sector of support shoulder
(121;122),
Zero and the peripheral direction (105) along the rotor core (100) towards the " V " shape design (101,102) inside
Its edge part (123 being directed toward;124) there is forming part (125 in;126),
Wherein, the forming part (125;126) described in being protruded past towards the inside of " V " shape design (101,102) forever
Long magnet (101;102) plane of the pole-face (127) of the inside towards " V " shape design (101,102).
2. rotor core (100) according to claim 1,
It is characterized in that,
The permanent magnet (101;102) side (115;And the recess (111 116);112) end side (117;118)
Straight line, intermediate section (131) external opening preset, towards " V " shape design (101,102) angle
(a1) it is arranged under,
The recess (111;112) in the permanent magnet (101;102) side (115;116) with the recess (111;
112) end side (117;118) maximum length (l4) between is in the recess (111;112) for the shaping sector
(121;122) edge part (119 turned to;120) place, that is towards the " V " shape design (101,102) outside refer to
To, and
The recess (111;112) in the permanent magnet (101;102) side (115;116) with the recess (111;
112) end side (117;118) minimum length (l7) between is in the recess (111;112) for the forming part
(125;126) edge part (123 turned to;124) place, that is towards the " V " shape design (101,102) inside refer to
To.
3. rotor core (100) according to claim 2,
It is characterized in that,
The connection bridge part (113;114) along the recess (111;112) end side (117;118) straight line, in
Between section (131) have it is at least nearly constant or towards the " V " shape design (101,102) inside be gradually reduced,
The width determined along the radial direction of the rotor core (100), and
It is determined depending on this in the side (115 of the permanent magnet (101,102);116) with the recess (111;112)
End side (117;118) angle (a1) between straight line, intermediate section (131).
4. according to any one of preceding claims or the multinomial rotor core (100),
It is characterized in that,
The forming part (125;126) it is protruded past with it towards the inside maximum that the " V " shape designs (101,102) described
Permanent magnet (101;102) scale (l5) of the pole-face (127) of the inside towards " V " shape design (101,102) is institute
State permanent magnet (101;102) in the permanent magnet (101;102) the inside towards " V " shape design (101,102)
Pole-face (127) and the permanent magnet (101;102) pole-face of the outside towards " V " shape design (101,102)
(130) 5 to 20%, especially at least almost 10% of the thickness (l1) between,
And preferably, the forming part (125;126) cavetto is come with radius (R2), the radius is at least almost described recessed
Mouth (111;112) in the permanent magnet (101;102) side (115;116) with the recess (111;112) end side
(117;118) twice of the minimum length (l7) between.
5. according to any one of preceding claims or the multinomial rotor core (100),
It is characterized in that,
The shaping sector (121;122) with it from the permanent magnet (101;102) towards the " V " shape design (101,
102) scale (l6) of the pole-face (130) of outside towards the inside maximum rebound of " V " shape design (101,102) is described
Permanent magnet (101;102) in the permanent magnet (101;102) the inside towards " V " shape design (101,102)
Pole-face (127) and the permanent magnet (101;102) pole-face (130) of the outside towards " V " shape design (101,102)
Between thickness (l1) 10 to 40%, preferably 20 to 30%, particularly preferably at least almost 27%,
And preferably, the shaping sector (121;122) cavetto, the radius are come with radius (R3)
Zero is at least almost the recess (111;112) in the permanent magnet (101;102) side (115;116) and institute
State recess (111;112) end side (117;118) half of the minimum length (l7) between,
Zero particularly preferably at least nearly equalizes the forming part (125;126) radius (R2) being rounded off with it.
6. according to any one of preceding claims or the multinomial rotor core (100),
It is characterized in that,
The recess (111;112) edge part is in the forming part (125;126) with the recess (111;112) end side
(117;118) it is rounded off in the First Transition region (132) between,
Cavetto, the radius are preferably come with radius (R4)
Zero is at least almost the recess (111;112) in the permanent magnet (101;102) side (115;116) and institute
State recess (111;112) end side (117;118) 4/3rds of the minimum length (l7) between,
Zero optionally at least nearly equalizes
■ The recess (111;112) in the permanent magnet (101;102) side (115;116) with the recess (111;
112) end side (117;118) maximum length (l4) between,
■ Particularly preferably at least nearly equalize 0.9 times of the maximum length (l4).
7. according to any one of preceding claims or the multinomial rotor core (100),
It is characterized in that,
The recess (111;112) edge part is in the shaping sector (121;122) with the recess (111;112) end side
(117;118) it is rounded off in the second transitional region (133) between,
Cavetto, the radius are preferably come with radius (R1)
Zero is at least almost the recess (111;112) in the permanent magnet (101;102) side (115;116) and institute
State recess (111;112) end side (117;118) 0.3 times of the minimum length (l7) between,
Zero optionally at least nearly equalizes the recess (111;112) in the permanent magnet (101;102) side (115;
116) with the recess (111;112) end side (117;118) 0.2 times of the maximum length (l4) between.
8. a kind of rotor of the electric machine motivated by permanent magnet,
It is characterized in that
According to any one of preceding claims or the multinomial rotor core (100).
9. a kind of electric machine motivated by permanent magnet,
It is characterized in that
Rotor according to claim 8 and/or according to claim 1 to the rotor core described in any one of 7 or multinomial
(100)。
10. a kind of vehicle, especially road vehicle,
It is characterized in that
It is according to claim 9 by permanent magnet motivate electric machine and/or with rotor according to claim 8
And/or with according to claim 1 to the machine of the rotor core (100) described in any one of 7 or multinomial.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102016209709.1 | 2016-06-02 | ||
| DE102016209709.1A DE102016209709A1 (en) | 2016-06-02 | 2016-06-02 | rotor core |
| PCT/EP2017/058910 WO2017207158A1 (en) | 2016-06-02 | 2017-04-13 | Rotor core using permanent magnets, and electric machine using said rotor core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109314419A true CN109314419A (en) | 2019-02-05 |
Family
ID=58645016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780034016.6A Pending CN109314419A (en) | 2016-06-02 | 2017-04-13 | The rotor core used with permanent magnet or the electric machine used with this rotor core |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3465876A1 (en) |
| CN (1) | CN109314419A (en) |
| DE (1) | DE102016209709A1 (en) |
| WO (1) | WO2017207158A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112152351A (en) * | 2019-06-27 | 2020-12-29 | 法雷奥西门子新能源汽车(德国)有限公司 | Rotor for motor, motor for vehicle and vehicle |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019206088A1 (en) * | 2019-04-29 | 2020-10-29 | Volkswagen Aktiengesellschaft | Rotor sheet metal, in particular sheet metal cut, for a rotor of an electrical machine and electrical machine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1937358A (en) * | 2005-09-21 | 2007-03-28 | 丰田自动车株式会社 | Permanent magnet type rotating electric machine capable of suppressing deformation of rotor core |
| US20140077653A1 (en) * | 2012-09-14 | 2014-03-20 | Denso Corporation | Rotor for rotating electric machine |
| CN204967578U (en) * | 2015-09-23 | 2016-01-13 | 渤海大学 | Reduce PMSM torque ripple's rotor structure |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006254629A (en) * | 2005-03-11 | 2006-09-21 | Toyota Motor Corp | Rotor of rotating electric machine, rotating electric machine, and vehicle driving apparatus |
| JP2009153236A (en) * | 2007-12-18 | 2009-07-09 | Toyota Central R&D Labs Inc | Rotor for rotating electrical machines and rotating electrical machine |
| JP2014072995A (en) | 2012-09-28 | 2014-04-21 | Suzuki Motor Corp | Ipm type electric rotary machine |
-
2016
- 2016-06-02 DE DE102016209709.1A patent/DE102016209709A1/en not_active Withdrawn
-
2017
- 2017-04-13 EP EP17720384.1A patent/EP3465876A1/en active Pending
- 2017-04-13 WO PCT/EP2017/058910 patent/WO2017207158A1/en unknown
- 2017-04-13 CN CN201780034016.6A patent/CN109314419A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1937358A (en) * | 2005-09-21 | 2007-03-28 | 丰田自动车株式会社 | Permanent magnet type rotating electric machine capable of suppressing deformation of rotor core |
| US20140077653A1 (en) * | 2012-09-14 | 2014-03-20 | Denso Corporation | Rotor for rotating electric machine |
| CN204967578U (en) * | 2015-09-23 | 2016-01-13 | 渤海大学 | Reduce PMSM torque ripple's rotor structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112152351A (en) * | 2019-06-27 | 2020-12-29 | 法雷奥西门子新能源汽车(德国)有限公司 | Rotor for motor, motor for vehicle and vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102016209709A1 (en) | 2017-12-21 |
| WO2017207158A1 (en) | 2017-12-07 |
| EP3465876A1 (en) | 2019-04-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10833549B2 (en) | Rotary electric machine | |
| JP4886624B2 (en) | Permanent magnet type rotating electrical machine and permanent magnet type rotating electrical machine system | |
| US8294324B2 (en) | Winding arrangement for stator of rotating machinery | |
| CN102035329B (en) | Motor | |
| US8841807B2 (en) | Rotary electric machine with improved magnetic resistance | |
| JP6211524B2 (en) | Rotating electrical machine rotor and rotating electrical machine with rotor | |
| CN101741154A (en) | Rotating electric machine | |
| EP2485370A2 (en) | Permanent magnet electrical machine | |
| JP4900132B2 (en) | Rotor and rotating electric machine | |
| US20100213782A1 (en) | Five-phase motor with improved stator structure | |
| CN101677197B (en) | Brushless motor | |
| US9893577B2 (en) | Motor including permanent magnet rotor with flux barrier | |
| CN104868679B (en) | Permasyn morot and electric boosting steering system | |
| CN102570659A (en) | Rotor of rotary electric machine | |
| JP2002252941A (en) | Permanent magnet type dynamo electric machine | |
| JP2010011640A (en) | Permanent magnet type rotary electric machine | |
| KR101943775B1 (en) | Rotor of an electric machine, electric machine, and method for producing a rotor of an electric machine | |
| US11190070B2 (en) | Rotor for rotating electrical machine | |
| CN101796706A (en) | Electric machine and rotor arrangement | |
| KR20080074089A (en) | Car steering wheel electromechanical booster | |
| CN106134040A (en) | There is the reluctance rotor of mechanically stable | |
| CN107465285A (en) | Rotor core | |
| US9444317B2 (en) | Electric rotating machine | |
| CN110022016A (en) | A kind of rotor chip and its rotor and motor | |
| CN102457151A (en) | Motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190205 |