CN107437858A - Motor rotor punching sheet, rotor, motor and electric automobile - Google Patents
Motor rotor punching sheet, rotor, motor and electric automobile Download PDFInfo
- Publication number
- CN107437858A CN107437858A CN201610368644.5A CN201610368644A CN107437858A CN 107437858 A CN107437858 A CN 107437858A CN 201610368644 A CN201610368644 A CN 201610368644A CN 107437858 A CN107437858 A CN 107437858A
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- China
- Prior art keywords
- magnet steel
- motor
- steel groove
- rotor
- punching sheet
- Prior art date
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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
-
- 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
-
- 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
Abstract
The invention discloses a kind of motor rotor punching sheet, rotor, motor and electric automobile, motor rotor punching sheet includes punching body (100), formed with the magnet steel groove (200) inserted for magnet steel on the punching body, surface direction of the magnet steel groove along the punching body has straightway (201) and an inclination angle section (202) positioned at the straightway both sides, and first lateral margin of the inclination angle section away from the punching body centre of gyration is outward-dipping from the end of the straightway.By setting outward-dipping inclination angle section in straightway both sides, the buffering area for producing micro-deformation can be provided for the magnet steel both ends in magnet steel groove, i.e. when rotor rotates, magnet steel micro-deformation in magnet steel groove is allowed to produce tension inside magnet steel so as to discharge, then the life-span of magnet steel is lifted, the motor that ultrahigh speed works in electric automobile that is particularly suitable for use in is used.
Description
Technical field
The present invention relates to motor component field, in particular it relates to a kind of motor rotor punching sheet, use the punching
The rotor of piece and the motor using the rotor and the electric automobile using the motor.
Background technology
Motor is as drive device extensively using with various fields.Electric automobile therewith is emerging in recent years
Rise, it is self-evident to the importance of the motor as driving vehicle traveling.Wherein, well known, it is electric
Owner will include shell, stator and rotor.Such as at some in the prior art, shell is front opening
Cylinder, is provided with stator in shell, and stator includes stator core and iron core winding, rotor then include rotating shaft,
Permanent magnet and rotor core；Rotor core is set on rotating shaft, rotor core periphery be evenly equipped with it is multiple forever
Magnet；The front end of shell is provided with end face, and shell upper end is provided with terminal box and thinks winding power.So as to
Realize the rotation driving function of motor.Motor wherein as electric automobile usually require power it is big and
Small volume, how to solve this contradiction is also important topic to be studied in the art.
The content of the invention
Turn it is an object of the invention to provide a kind of motor rotor punching sheet, using the motor of the motor rotor punching sheet
Son, the motor using the rotor and the electric automobile using the motor.
To achieve these goals, the present invention provides a kind of motor rotor punching sheet, including punching body, should
Formed with the magnet steel groove inserted for magnet steel, table of the magnet steel groove along the punching body on punching body
Face direction has straightway and the inclination angle section positioned at the straightway both sides, and the inclination angle section is away from the punching
First lateral margin of the body centre of gyration is outward-dipping from the end of the straightway.
Alternatively, center symmetric setting of two inclination angle sections on the straightway.
Alternatively, the angle between first lateral margin of the inclination angle section and the straightway is 0.5 °
-2°。
Alternatively, the inclination angle section is close to the second lateral margin of the punching body centre of gyration and the straight line
The conllinear arrangement of section.
Alternatively, the straightway accounts for the magnet steel that is contained in the magnet steel groove along the punching body surface
Length 1/2-3/4.
Alternatively, the punching body is made up of amorphous alloy material.
Alternatively, the magnet steel groove is multiple that the plurality of magnet steel groove is formed with the magnet steel for forming rotor magnetic pole
Groove group, the magnet steel groove group include the first magnet steel groove arranged on the first diameter symmetry of the punching body
With the second magnet steel groove, the first magnet steel groove and the second magnet steel groove are arranged in outwardly open first V-type.
Alternatively, the magnet steel groove group also includes the 3rd magnet steel groove on first diameter symmetry arrangement
With the 4th magnet steel groove, the 3rd magnet steel groove and the 4th magnet steel groove arranged in outwardly open second V-type and
It is arranged at intervals at the radially inner side of the first magnet steel groove and the second magnet steel groove.
Alternatively, the angle of second V-type is less than the angle of first V-type.
Alternatively, the magnet steel groove group is multiple to respectively constitute multiple rotor magnetic poles, the plurality of magnet steel groove
Group is even number and is uniformly distributed circumferentially on the punching body.
Alternatively, the magnet steel groove group is four to form the two of the rotor pairs of poles.
Alternatively, it is located at phase formed with the oilhole being uniformly distributed circumferentially, the oilhole on the punching body
Between the adjacent magnet steel groove group.
Alternatively, the centre of gyration of the punching body is right in the side wall of the shaft hole formed with shaft hole
Claim ground formed with a pair be used for rotating shaft coordinate keyways, the keyway towards the center of circle protrude and it is the pair of
Keyway is located at described first diametrically.
Alternatively, in the magnet steel groove group, reinforcement is provided between the magnet steel groove being arranged symmetrically,
And it is provided with magnetic bridge or every bore between the edge of the magnet steel groove and the punching body.
Alternatively, the motor rotor punching sheet is super high speed motor rotor punching.
The present invention also provides a kind of rotor, and the rotor includes being formed by multiple rotor punchings are stacked
Rotor core, the rotor punching is motor rotor punching sheet provided by the invention.
The present invention also provides a kind of motor, including housing, rotor and motor in the housing
Stator, the rotor are rotor provided by the invention.
The present invention also provides a kind of electric automobile, including motor, and the motor provides for the present invention
Motor.
Pass through above-mentioned technical proposal, by setting outward-dipping inclination angle section, Ke Yiwei in straightway both sides
Magnet steel both ends in magnet steel groove provide the buffering area for producing micro-deformation, i.e., when rotor rotates, it is allowed to magnetic
Steel micro-deformation in magnet steel groove produces tension so as to discharge inside magnet steel, then lift the longevity of magnet steel
Life, the motor that ultrahigh speed works in electric automobile that is particularly suitable for use in are used.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Brief description of the drawings
Accompanying drawing be for providing a further understanding of the present invention, and a part for constitution instruction, with
Following embodiment is used to explain the present invention together, but is not construed as limiting the invention.
In accompanying drawing：
Fig. 1 is the first view stereo figure of the motor that the specific embodiment of the invention provides；
Fig. 2 is the second view stereo figure of the motor that the specific embodiment of the invention provides；
Fig. 3 is the configuration schematic diagram for the motor that the specific embodiment of the invention provides；
Fig. 4 is the structural representation for the motor rotor punching sheet that the specific embodiment of the invention provides；
Fig. 5 is the structural representation for the magnet steel groove that the specific embodiment of the invention provides, wherein in order to clear
Angle is shown, in the case of other feature invariants, the angle is exaggerated several times and shown；
Fig. 6 is the structure diagram for the electric automobile that the specific embodiment of the invention provides.
Embodiment
The embodiment of the present invention is described in detail below in conjunction with accompanying drawing.It should be appreciated that
Embodiment described herein is merely to illustrate and explain the present invention, and is not limited to this hair
It is bright.
In the present invention, in the case where not making opposite explanation, the noun of locality that uses as " it is upper and lower, left,
It is right " it is typically what is defined on the basis of the page of accompanying drawing, " inside and outside " refers to corresponding component profile
It is inner and outer.
As shown in Figures 1 to 6, the present invention provide at a kind of motor rotor punching sheet, a kind of rotor,
A kind of motor 1000 and a kind of electric automobile 2000.Wherein motor 1000 can be two pairs of pole motors,
Permagnetic synchronous motor or two pairs of pole permanent-magnet synchronous machines, motor of the invention can also be other in addition
Known motor type in field, such as the motor of asynchronous machine etc. type, especially a kind of ultrahigh speed
The motor of motor, i.e. rotating speed more than 20000rpm (rev/min), the various motors that the present invention mentions
The motor for being also particularly suitable for electric automobile uses.
Wherein, " two pairs of pole " described in the present invention, " permanent-magnet synchronous " are terms well known in the art,
For example, two pairs of poles refer to be provided with two pairs of magnetic poles on rotor.Wherein because magnetic pole logarithm is more, when
When motor speed is high, when the motor especially in the present invention is super high speed motor, the alternative frequency in magnetic field is got over
Height, heat caused by motor is more, and the requirement to cooling system is also higher, in addition the iron of motor
Consumption can also increase.Therefore, the motor that ultrahigh speed operation is more suitable for using two pairs of pole motors is used.
Certainly, in other possible embodiments, three pairs of poles or four pairs of pole etc. can also be used.
The motor that other permagnetic synchronous motor is also more suitable for electric automobile uses.In performance, its
Efficiency high can be included, the advantages of power factor (PF) is high, and small volume, in light weight in addition, and temperature rise is low.Specifically
Ground for example, after embedding permanent magnet, rotor field is established by permanent magnet on rotor for permagnetic synchronous motor,
In normal work, rotor is run simultaneously with stator field, non-inductive electric current in rotor, in the absence of rotor electricity
Resistance loss, greatly improves electric efficiency.In addition, when starting, motor has sufficiently large starting torque,
And it is not required to that starting current is too big, suitable for the motor moved by electrokinetic cell band.In addition, permanent magnetism
The efficiency high of synchronous motor, resistance loss is relatively low in rotor windings, rarer in stator winding or hardly
Reactive current be present, make motor temperature rise low, can also extend the service life of motor.Other permanent-magnet synchronous
The advantages of motor belt motor is come, which does not do, excessively to be repeated.In a word, permanent magnetic synchronous motor structure is simple, processing and distribution
Expense is reduced, and operation is relatively reliable, using increasing air gap flux density after rare earth permanent magnet, and motor speed
Bring up to most preferably, so as to be reduced significantly the volume of motor, improve power-mass ratio；Additionally, due to province
Excitation copper loss is removed, electric efficiency is significantly improved.
In structure, as shown in Figure 1 to Figure 3, embodiment of the present invention provide motor include housing 400,
Rotor 300 and motor stator 500 in the housing 400, wherein rotor 300 wrap
Include by the stacked rotor core 310 formed of multiple rotor punchings, in addition to phase is driven with rotor core 310
Rotating shaft 320 even, specifically in the present embodiment, in the revolution of the punching body 100 of rotor core
Shaft hole 101 has been formed centrally, has been asymmetrically formed and has been used for for a pair and rotating shaft in the side wall of the shaft hole 101
The keyway 102 of cooperation, i.e. rotor core 310 and rotating shaft 320 are key connection mode.In other embodiment party
In formula, the two can also be attached using drive connection mode known to other skilled in the art,
For example with the type face connected mode of non-circular cross-section.In addition, can also be formed with oilhole on rotor punching
103, to form a part for rotor oil circuit.
In addition, housing 400 has end cap 800 away from clutch end, can be formed on the end cap 800
There is bearing chamber, the inner of rotating shaft 320 is arranged in the bearing chamber by ceramic balls zanjon bearing 600,
Clutch end can be then used as by stretching out the outer end of housing 400.In addition, terminal box 700 is installed on housing
Can be with external power supply, such as electrically connected with electrokinetic cell bag also can be by powering to produce for winding 900
Magnetic field, so as to realize the work of motor.In addition, it is additionally provided with gas between the rotor and stator of motor
Gap is to enable motor normal work.
In embodiments of the present invention, as shown in figure 4, the motor rotor punching sheet provided includes punching
Body 100, formed with the magnet steel groove 200 inserted for magnet steel on the punching body 100, that is, utilize magnetic
Steel forms rotor magnetic pole as permanent magnet, i.e. permanent magnet in present embodiment uses Embedded installation
Mode, the stability when rotor ultrahigh speed rotates can so be effectively ensured, compared to the permanent magnetism of surface-mount type
Body mounting means is more suitable for the rotor of ultrahigh speed operating.Wherein, in rotor, especially ultrahigh speed is transported at a high speed
When turning, the magnet steel being contained in magnet steel groove can have the trend of deformation under the action of the centrifugal force, i.e., internally
Tension is produced, and compression is born due to the resistance of magnet steel groove, wherein the tensile strength of magnet steel will
Far below its compression strength.In a kind of embodiment of magnet steel, its tensile strength only has 85Mpa, and resistance to compression
Intensity can then reach more than 1000Mpa.Therefore tension caused by can cause shadow to the life-span of magnet steel
Ring.Based on this, in order to improve the life-span of magnet steel in present embodiment, the groove profile of magnet steel groove is changed
Enter, its mode can include the tension suffered by magnet steel being changed into compression.
Wherein, as shown in figure 5, surface direction of the magnet steel groove 200 along punching body 100 has straightway
201 and the inclination angle section 202 positioned at the both sides of straightway 201, inclination angle section 202 is away from punching body 100
First lateral margin of the centre of gyration is outward-dipping from the end of straightway 201.So, by straightway 201
Both sides set outward-dipping inclination angle section, and it is micro that generation can be provided for the magnet steel both ends in magnet steel groove 200
The buffering area of deformation, i.e., when rotor rotates, it is allowed to magnet steel in magnet steel groove 200 micro-deformation so as to releasing
Put and tension is produced inside magnet steel, then lift the life-span of magnet steel.
Specifically, in the present embodiment, can be existing in order to realize the improvement of magnet steel groove 200
Angle of release forms on yi word pattern magnet steel groove.Wherein, because the deformation of magnet steel is more micro, and in order to avoid
Excessive influence is caused on the intensity of rotor punching, in the present embodiment, the first lateral margin of inclination angle section 202
Angle α between straightway 201 is 0.5 ° -2 °, for example with 1 ° of inclination.Need to note herein
Meaning, Fig. 5 are in the case of other feature invariants, and the angle α is exaggerated into regarding after several times
Figure, schematically to clearly show that the inclination angle section 202.This improvement to magnet steel groove 200 can effectively increase
Add the life-span of magnet steel, but the intensity of punching body 100 can be caused necessarily to influence.Therefore, this implementation
Punching body 100 in mode is made up of amorphous alloy material, i.e., the rotor iron in embodiment of the present invention
Core is made up of amorphous alloy material.
Well known, tensile strength is tens times of common silicon steel material in the characteristic of amorphous alloy material, because
The intensity that this improvement to magnet steel groove 200 is sacrificed can be made up by the material, and be much higher than existing
The rotor punching of silicon steel material in technology, so as to ensure that the life-span of magnet steel can also ensure that rotor iron
The intensity of core and life-span.
In addition, in embodiments of the present invention, because rotor core is made up of amorphous alloy material, can also
So that rotor core has the characteristics that magnetic conductivity is high, electrical conductivity is high, eddy-current loss is small, more greatly improve
The performance of motor., wherein it is desired to be mentioned that, rotor core, this hair is made using amorphous alloy material
Bright inventor has found that this material not only can cause rotor ability to get a promotion, and also solves and how to lead to
The key issue that small size realizes high-power output is crossed, this technical breakthrough enables to electric automobile
The motor in field achieves rapid progress.
Specifically, the mentality of designing of the present inventor is, inventor is had found in electric automobile field,
For the consideration of space layout, it is difficult to the volume of motor is maximum, that is, it is difficult the moment of torsion of lifting motor.This
Sample is for hoisting power, it can be seen from formula p=T*n/9550, in the case of small size, and Ke Yitong
Increase rotating speed is crossed to realize powerful output.Therefore, the present inventor is generated using small size
The motor of big rotating speed is used as the motivation that the motor of electric automobile is used.Wherein, inventor further contemplates
To after reaching 20000rpm ultrahigh speed when motor speed, limited by common silicon steel sheet yield strength
System, the motor volume designed can be too small.When motor volume is too small, although rotating speed it is higher but still
The torque of motor output can be directly affected, so as to which the requirement of motor can not be met.
In view of these factors, present inventor employs amorphous alloy material and does rotor to solve rotor
The problem of external diameter is limited, i.e., it can increase as much as possible while ensureing that motor can be operated with ultrahigh speed
The volume of motor is so as to increasing moment of torsion and further lifting motor power.Further, it is provided by the invention
Motor is not simply manufactured all parts using amorphous alloy material.Except cost factor, this hair
It is bright to also found under present technological conditions, amorphous alloy strips restricted width, if also using amorphous alloy strip
Material does motor stator, and it is too small and influence the power output of motor to will also result in produced motor.In addition,
Because the magnetostriction coefficient of amorphous alloy material is larger, this will cause motor oscillating noise larger.Cause
This, rotor core is only used amorphous alloy material system by the various motors that embodiment of the present invention is provided
Into, and stator can then select to be made using existing silicon steel material.Therefore, in embodiment of the present invention
Using the structure that rotor is used to original silicon steel material using amorphous alloy material and stator, be carry out it is comprehensive
The structure for considering each side factor is closed, it is necessary to which inventor carries out a large amount of creative works.
And further, this just with it is above-mentioned using amorphous alloy material manufacture rotor core so as to being lifted
The idea in magnet steel life-span is perfectly in harmony when ultrahigh speed operates.So, the present invention is dexterously by non-crystaline amorphous metal material
Expect the manufacture for rotor, the beneficial effect that the magnet steel life-span is improved when ultrahigh speed operates can not only be reached
Fruit, additionally it is possible to while make it that the motor volume that designs is smaller without too small, i.e., closed by using amorphous
Golden material manufacture rotor core also creates unexpected technique effect, realizes a variety of of feature
Effect.Being particularly suitable for use in needs the requirement of high-power and small size motor so that motor
Performance is significantly enhanced.
Return on the motor rotor punching sheet of present embodiment offer, as shown in figure 5, in order to ensure magnet steel two
The deformation of side is consistent, can be designed as setting on the Central Symmetry of straightway 201 by two inclination angle sections 202
Put.The structure of i.e. two inclination angle sections 202 is essentially identical.In addition, in order to realize the structure of magnet steel, inclination angle
Section 202 is collinearly arranged close to the second lateral margin of the centre of gyration of punching body 100 with straightway 201.Incline
The first lateral margin line in only outside tilts relative to straightway 201 in the section of angle, so as to ensure that magnet steel exists
The outside micro-deformation in both ends under centrifugal action, additionally it is possible to preferably so that magnet steel, which accommodates, is maintained at magnetic
In steel tank 200.Further, in order to better adapt to the deformation of magnet steel, straightway 201 can be designed
Account for the 1/2-3/4 of length of the magnet steel being contained in magnet steel groove along the surface of punching body 100.So that magnetic
The deformation of steel is preferably buffered, and avoids magnet steel groove from applying destructive power unnecessary to magnet steel.
The groove profile for above describing magnet steel groove 200 improves, below to rotor in embodiment of the present invention
The improvement in terms of magnetic pole arrangement in punching is described.
Wherein, in order to form rotor magnetic pole, as shown in figure 4, magnet steel groove 200 is multiple, the plurality of magnetic
Steel tank 200 is formed with the magnet steel groove group for forming rotor magnetic pole, i.e. a magnet steel groove group can form one
Rotor magnetic pole, wherein, the magnet steel groove group includes first arranged on the first diameter symmetry of punching body
The magnet steel groove 220 of magnet steel groove 210 and second, the first magnet steel groove and the second magnet steel groove are in outwardly open the
One V-type is arranged.In other words, magnet steel arrangement of the invention is V-structure.For the purposes of compared with
Larger magnetic field is produced in small size, in the present embodiment, magnet steel groove group also includes straight on first
The 3rd magnet steel groove 230 and the 4th magnet steel groove 240 that footpath is arranged symmetrically, the 3rd magnet steel groove and the 4th magnet steel
Groove is in outwardly open second V-type arrangement and is arranged at intervals at the first magnet steel groove and the second magnet steel groove
Radially inner side.I.e. a magnetic pole can include four magnet steel in the present invention, so as to make full use of punching body
Space, the motor of this small volume that is particularly suitable for use in.In order to optimize the cloth of four magnet steel in same group
Office, reasonable utilization space, alternatively, the angle of the second V-type are less than the angle of the first V-type.So,
Enable to the magnet steel in outside to better profit from the space in punching body string of a musical instrument direction, and cause inner side magnet steel
The space of punching body radial direction is better profited from, layout is more reasonable, more effectively produces magnetic field.
In order to produce uniform magnetic field, in the present embodiment, magnet steel groove group is multiple more to respectively constitute
Individual rotor magnetic pole, the plurality of magnet steel groove group are even number and are uniformly distributed circumferentially on punching body.Its
In in two pairs of pole motors provided by the invention, accordingly, magnet steel groove group is four to form rotor
Two pairs of poles.In other embodiments, with the difference of magnetic pole logarithm, the magnetic of varying number can be set
Steel tank group.
In the present embodiment, in order to ensure the intensity of punching body, formed with edge on punching body 100
Circumferential equally distributed oilhole 103, the oilhole 103 is between adjacent magnet steel groove group, with fully profit
Punching body plenum, loss of weight can be carried out to rotor and reduce rotor moment of inertia by opening up oilhole 103 in addition.
In addition, in the present embodiment, the centre of gyration of punching body 100 is formed with shaft hole 101, this turn
A pair of keyways 102 for being used to coordinate with rotating shaft, the keyway 102 are asymmetrically formed in the side wall of axis hole 101
It is located at first diametrically towards center of circle protrusion and a pair of keyways 102.That is, the keyway is the structure of protrusion
And non-re-entrant structure, coordinate transmission moment of torsion with spindle keyway so as to convenient.
In addition, in order to ensure the intensity of punching body, it is in the present embodiment, right in magnet steel groove group
Claim to be provided with reinforcement between the magnet steel groove of arrangement, to strengthen the intensity of punching body.In addition, and magnetic
Magnetic bridge is provided between the edge of steel tank and punching body or every bore.Magnetic bridge therein can be with smaller
It is better, so as to which leakage field can be reduced, increase air gap flux density.Air gap magnetic density waveform can be improved every bore in addition,
So as to lifting motor performance.
Motor provided by the invention is more suitable for the motor of electric automobile, iron loss therein than relatively low,
Power output is improved, turn avoid the problem of next noise of amorphous motor belt motor is big.Redesign and determined, turn
Minor structure.The intensity of rotor structure is improved, can not only make ultrahigh rotating speed motor, and with excellent
Electromagnetic performance.Only rotor core uses non-crystaline amorphous metal, reduces difficulty of processing, reduces technique
Cost.Volume is not restricted by amorphous alloy material, and motor can then give play to bigger moment of torsion and power.
At high speed, the alternative frequency in magnetic field is minimized, reduces iron loss, reduces radiating, and easily
In the control of motor so that the performance of motor is significantly improved, and causes the performance of electric automobile indirectly
It is increased dramatically, practicality is more preferable.
The preferred embodiment of the present invention is described in detail above in association with accompanying drawing, it is still, of the invention and unlimited
Detail in above-mentioned embodiment, can be to the present invention in the range of the technology design of the present invention
Technical scheme carry out a variety of simple variants, these simple variants belong to protection scope of the present invention.
It is further to note that each particular technique described in above-mentioned embodiment is special
Sign, in the case of reconcilable, can be combined by any suitable means, in order to avoid need not
The repetition wanted, the present invention no longer separately illustrate to various combinations of possible ways.
In addition, various embodiments of the present invention can be combined randomly, as long as its
Without prejudice to the thought of the present invention, it should equally be considered as content disclosed in this invention.
Claims (18)
1. a kind of motor rotor punching sheet, including punching body (100), shape on the punching body (100)
Into the magnet steel groove (200) having for magnet steel insertion, it is characterised in that the magnet steel groove (200) is along institute
Stating the surface direction of punching body (100) has straightway (201) and positioned at the straightway (201)
The inclination angle section (202) of both sides, the inclination angle section (202) is away from the punching body (100) revolution
First lateral margin of the heart is outward-dipping from the end of the straightway (201).
2. motor rotor punching sheet according to claim 1, it is characterised in that two inclination angles
Center symmetric setting of the section (202) on the straightway (201).
3. motor rotor punching sheet according to claim 1 or 2, it is characterised in that the inclination angle
Angle between first lateral margin of section (202) and the straightway (201) is 0.5 ° -2 °.
4. motor rotor punching sheet according to claim 1 or 2, it is characterised in that the inclination angle
Section is conllinear close to the second lateral margin of punching body (100) centre of gyration and the straightway (201)
Arrangement.
5. motor rotor punching sheet according to claim 1 or 2, it is characterised in that the straight line
Section (201) accounts for length of the magnet steel being contained in the magnet steel groove along punching body (100) surface
1/2-3/4.
6. motor rotor punching sheet according to claim 1, it is characterised in that the punching body
(100) it is made up of amorphous alloy material.
7. motor rotor punching sheet according to claim 1, it is characterised in that the magnet steel groove (200)
To be multiple, the plurality of magnet steel groove (200) is formed with the magnet steel groove group for forming rotor magnetic pole, the magnet steel groove
Group includes the first magnet steel groove (210) and second arranged on the first diameter symmetry of the punching body
Magnet steel groove (220), the first magnet steel groove and the second magnet steel groove are arranged in outwardly open first V-type.
8. motor rotor punching sheet according to claim 7, it is characterised in that the magnet steel groove group
Also include the 3rd magnet steel groove (230) and the 4th magnet steel groove (240) on first diameter symmetry arrangement,
3rd magnet steel groove and the 4th magnet steel groove are arranged in outwardly open second V-type and are arranged at intervals at institute
State the radially inner side of the first magnet steel groove and the second magnet steel groove.
9. motor rotor punching sheet according to claim 8, it is characterised in that second V-type
Angle be less than first V-type angle.
10. according to the motor rotor punching sheet described in any one in claim 7-9, it is characterised in that
The magnet steel groove group to be multiple to respectively constitute multiple rotor magnetic poles, the plurality of magnet steel groove group be even number simultaneously
It is uniformly distributed circumferentially on the punching body.
11. motor rotor punching sheet according to claim 10, it is characterised in that the magnet steel groove
Group is four to form the two of the rotor pairs of poles.
12. motor rotor punching sheet according to claim 10, it is characterised in that the punching sheet
Formed with the oilhole (103) being uniformly distributed circumferentially on body (100), the oilhole is positioned at adjacent described
Between magnet steel groove group.
13. motor rotor punching sheet according to claim 12, it is characterised in that the punching sheet
The centre of gyration of body (100) is symmetrical in the side wall of the shaft hole (101) formed with shaft hole (101)
Protruded formed with a pair of keyways (102) being used for rotating shaft cooperation, the keyway (102) towards the center of circle on ground
And the pair of keyway (102) is located at described first diametrically.
14. according to the motor rotor punching sheet described in any one in claim 7-9, it is characterised in that
In the magnet steel groove group, reinforcement, and the magnetic are provided between the magnet steel groove being arranged symmetrically
Magnetic bridge is provided between the edge of steel tank and the punching body or every bore.
15. motor rotor punching sheet according to claim 1, it is characterised in that the rotor
Punching is super high speed motor rotor punching.
16. a kind of rotor, the rotor (300) includes being formed by multiple rotor punchings are stacked
Rotor core (310), it is characterised in that the rotor punching is according to any in claim 1-6
Motor rotor punching sheet described in one.
17. a kind of motor, including housing (400), the rotor in the housing (400)
(300) and motor stator (500), it is characterised in that the rotor (300) is according to right
It is required that the rotor described in 16.
18. a kind of electric automobile, including motor, it is characterised in that the motor is according to power
Profit requires the motor described in 17.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610368644.5A CN107437858B (en) | 2016-05-27 | 2016-05-27 | Motor rotor punching sheet, motor rotor, motor and electric automobile |
| PCT/CN2017/085590 WO2017202318A1 (en) | 2016-05-27 | 2017-05-23 | Punching plate for motor rotor, motor rotor, motor, and electric vehicle |
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| CN201610368644.5A CN107437858B (en) | 2016-05-27 | 2016-05-27 | Motor rotor punching sheet, motor rotor, motor and electric automobile |
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| CN107437858A true CN107437858A (en) | 2017-12-05 |
| CN107437858B CN107437858B (en) | 2021-05-14 |
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| WO (1) | WO2017202318A1 (en) |
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| CN108711977A (en) * | 2018-06-25 | 2018-10-26 | 苏州汇川联合动力系统有限公司 | Rotor and magneto |
| CN110034621A (en) * | 2018-01-11 | 2019-07-19 | 本田技研工业株式会社 | The rotor of rotating electric machine |
| CN113497501A (en) * | 2020-04-02 | 2021-10-12 | 安徽威灵汽车部件有限公司 | Rotor punching sheet, rotor of motor, motor and vehicle |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2017202318A1 (en) | 2017-11-30 |
| CN107437858B (en) | 2021-05-14 |
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