CN208986699U - Rotor punching, rotor, motor and mold - Google Patents
Rotor punching, rotor, motor and mold Download PDFInfo
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- CN208986699U CN208986699U CN201822064162.8U CN201822064162U CN208986699U CN 208986699 U CN208986699 U CN 208986699U CN 201822064162 U CN201822064162 U CN 201822064162U CN 208986699 U CN208986699 U CN 208986699U
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Abstract
The utility model proposes a kind of rotor punching, rotor, motor and molds, wherein rotor punching includes: multiple slots, and each slot is arranged radially along rotor punching, and slot is for installing ferromagnet；There is the first angle, in multiple first angles, at least one first angle is less than other first angles between two slots of arbitrary neighborhood.By the technical solution of the utility model, has effectively achieved certain air gap flux density harmonic waves and cancel out each other；It also achieves and oblique pole effect is reached with whole magnetic pole misalignment, and rotor is without segmentation；Further, the technical program can also reduce cogging torque, torque pulsation, improve power of motor density, compared to the rotor punching in the structures such as the special magnet steel that magnetizes, step skewed pole rotor, the rotor punching of the technical program also has many advantages, such as simple process, easily manufactured, convenient for batch production.
Description
Technical field
The utility model relates to technical field of motors, in particular to a kind of rotor punching, a kind of rotor, Yi Zhong electricity
Machine and a kind of mold.
Background technique
Cogging torque and torque pulsation are to influence one of motor oscillating noise principal element.Traditional permanent magnet machine rotor is normal
Motor cogging torque and torque pulsation are reduced by the way of step skewed pole, but this method magnetizes, assembly difficulty, technique is multiple
Miscellaneous, product batch is not easy to realize.
Utility model content
The utility model aims to solve at least one of technical problems existing in the prior art or related technologies.
In view of this, one of the utility model is designed to provide a kind of rotor punching.
Another of the utility model is designed to provide a kind of rotor.
Another of the utility model is designed to provide a kind of motor.
Another of the utility model is designed to provide a kind of mold.
To achieve the goals above, the technical solution of the utility model first aspect provides a kind of rotor punching, comprising:
Multiple slots, each slot are arranged radially along rotor punching, and slot is for installing ferromagnet；Have the between two slots of arbitrary neighborhood
One angle, in multiple first angles, at least one first angle is less than other first angles.
In the technical scheme, by the way that at least one first angle is set smaller than other first angles, so that
After ferromagnet is installed on slot, can at least one polar arc be less than other polar arcs, make q axis area corresponding to lesser polar arc
The area in domain is less than the area in other q axis region, and then realizes that certain air gap flux density harmonic waves are cancelled out each other；Meanwhile in this way
The ferromagnet of structure arrangement can be realized and reach oblique pole effect with whole magnetic pole misalignment, and rotor is without segmentation；Further, originally
Technical solution also by the structure of this oblique pole, can reduce motor cogging torque, reduce the loss of electric machine, and then improve motor effect
Rate；Slot ripples can also be reduced, torque pulsation is reduced, improve power of motor density, to reduce the vibration noise of motor；Together
When, compared to the rotor punching in the structures such as the special magnet steel that magnetizes, step skewed pole rotor, the rotor punching of the technical program has
It is simple process, easily manufactured, the advantages that being convenient for mass production.
It is to be appreciated that the rotor that the slot being arranged radially is formed after installing ferromagnet is cutting orientation structure, structure is simple,
It is easy to assembly.
In the above-mentioned technical solutions, the quantity of slot is even number.
In the technical scheme, the quantity of slot is set as even number, is easily installed the ferromagnet of even number, can guaranteed
Number of magnetic poles is also even number, so as to provide maximum magnetic field using the smallest magnet, promotes the utilization rate of energy, can be with
Guarantee stability when stress balance and the work of rotor.
In the above-mentioned technical solutions, multiple slots are axisymmetricly distributed.
In the technical scheme, multiple slots are axisymmetricly distributed, and on the one hand advantageously ensure that the stress balance and work of rotor
Stability when making promotes capacity usage ratio.
In the above-mentioned technical solutions, the slot of multiple distributions that are centrosymmetric is divided into even number slot group, each slot group and
Slot group adjacent thereto respectively deviates identical predetermined angle round about, is distributed multiple slots axisymmetricly, wherein each
The circumferentially continuous arrangement of multiple slots in slot group along rotor punching.
In the technical scheme, the multiple slots for the distribution that is centrosymmetric are divided into even number slot group, each slot group and with
Its adjacent slot group respectively deviates identical angle round about, and such multiple slots are formed by axially symmetric structure, can
Cogging torque and torque pulsation are more effectively reduced, improves power of motor density, and structure is simple, it is easy to process.
In any of the above-described technical solution, circumferential array of multiple slots along rotor punching.
In the technical scheme, for multiple slots along the circumferential array of rotor punching, i.e., the radial direction of each slot is continuously, to keep away
Exempt from the multiple slots for arranged radially occur, can simplify structure, improving production efficiency in this way.
The technical solution of the utility model second aspect provides a kind of rotor, including appointing in multiple above-mentioned first aspects
The rotor punching of one technical solution；Multiple ferromagnets, each ferromagnet are mounted in a slot of a rotor punching.
In the technical scheme, it is rushed by the way that the rotor of any one of above-mentioned first aspect technical solution is arranged in the rotor
Piece, so that the rotor in the technical program is provided with whole beneficial effects of above-mentioned technical proposal, details are not described herein.
In the above-mentioned technical solutions, in two adjacent ferromagnets, the pole polarity phase close to each other along the circumferential direction of rotor
Together.
In the technical scheme, in two adjacent ferromagnets, the magnetic pole pole of the side close to each other along the circumferential direction of rotor
Property it is identical, i.e., the polarity of adjacent magnetic pole is identical, in other words, ferromagnet along rotor circumferential direction alternating polarity place, be conducive in this way
Reduce cogging torque and torque pulsation.
In the above-mentioned technical solutions, in the same slot group of rotor punching, multiple ferromagnets are continuously installed.
In the technical scheme, multiple ferromagnets are continuously installed, and are conducive to the stability for improving working rotor.
In the above-mentioned technical solutions, multiple ferromagnets are axisymmetricly distributed.
In the technical scheme, it is distributed by multiple ferromagnetic axial symmetry, can make full use of ferromagnetic magnetism, mention
Rise the utilization rate of energy, additionally it is possible to further promote the stability and reliability of working rotor.
The technical solution of the utility model third aspect provides a kind of motor, comprising: any one of above-mentioned second aspect
The rotor of technical solution.
By using the rotor of any one of above-mentioned second aspect technical solution, so that the motor of the technical program has
Whole beneficial effects of above-mentioned technical proposal, details are not described herein.
The technical solution of the utility model fourth aspect provides a mold, and includes in above-mentioned first aspect for making
The rotor punching of any one technical solution, mold are equipped with protrusion corresponding with the slot of rotor punching.
In the technical scheme, for the mold of the rotor punching of any one of above-mentioned first aspect technical solution, structure
Simply, easy to process.
The additional aspect and advantage of the utility model will become obviously in following description section, or practical new by this
The practice of type is recognized.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the rotor punching of one embodiment of the utility model；
Fig. 2 is the slot off-set construction schematic diagram of the rotor punching of one embodiment of the utility model；
Fig. 3 is the skewed pole rotor and symmetric rotor back-emf harmonic content schematic diagram of one embodiment of the utility model；
Skewed pole rotor and symmetric rotor electromagnetic torque comparison of wave shape figure in one embodiment of Fig. 4 the utility model.
Wherein, the corresponding relationship between appended drawing reference and component names of the Fig. 1 into Fig. 2 are as follows:
10 rotor punchings, 12 slots, the first slot of 120a, the second slot of 121a, 122a third slot, the 4th slot of 123a, 120b the 5th
Slot, the 6th slot of 121b, the 7th slot of 122b, the 8th slot of 123b.
Specific embodiment
In order to be more clearly understood that the above objects, features, and advantages of the utility model, with reference to the accompanying drawing and have
The utility model is further described in detail in body embodiment.It should be noted that in the absence of conflict, this Shen
The feature in embodiment and embodiment please can be combined with each other.
Many details are explained in the following description in order to fully understand the utility model, still, this is practical
Novel to be implemented using other than the one described here other modes, therefore, the protection scope of the utility model is simultaneously
It is not limited by the specific embodiments disclosed below.
Some embodiments according to the present utility model are described referring to Fig. 1 to Fig. 4.
As shown in Figure 1, according to the utility model proposes one embodiment a kind of rotor punching 10, comprising: multiple slots
12, each being arranged radially along rotor punching 10 of slot 12, slot 12 is for installing ferromagnet；Have between two slots 12 of arbitrary neighborhood
There is the first angle, in multiple first angles, at least one first angle is less than other first angles.
As shown in Figure 1, in this embodiment, by the way that at least one first angle is set smaller than other first angles,
Multiple slots 12 i.e. on rotor punching 10 form a non-centrosymmetrical structure, so that ferromagnet is installed on slot 12
Later, can at least one polar arc be less than other polar arcs, make q axis region corresponding to lesser polar arc area be less than it is other
The area in q axis region, and then realize that certain air gap flux density harmonic waves are cancelled out each other；Meanwhile such structure arrangement is ferromagnetic
Body, which can be realized, reaches oblique pole effect with whole magnetic pole misalignment, to reduce motor cogging torque, reduces the loss of electric machine, and then improve electricity
Engine efficiency；And rotor is without segmentation；Further, the present embodiment can also reduce slot ripples, reduce torque pulsation, improve motor
Power density, to reduce the vibration noise of motor；Meanwhile compared in the structures such as the special magnet steel that magnetizes, step skewed pole rotor
Rotor punching 10, the rotor punching 10 of the present embodiment has many advantages, such as simple process, easily manufactured, is convenient for mass production.
It is to be appreciated that the rotor that the slot 12 being arranged radially is formed after installing ferromagnet is cutting orientation structure, structure letter
It is single, it is easy to assembly.
Ferromagnet in the present embodiment, including at least any one in magnet, magnet steel.
In the above-described embodiments, the quantity of slot 12 is even number.
In this embodiment, the quantity of slot 12 is set as even number, is easily installed the ferromagnet of even number, can guaranteed
Number of magnetic poles is also even number, so as to provide maximum magnetic field using the smallest magnet, promotes the utilization rate of energy, can be with
Guarantee stability when stress balance and the work of rotor.
Certainly, in some embodiments, it is also possible to odd number is set by the quantity of slot 12, to meet specific demand.
In the above-described embodiments, multiple slots 12 are axisymmetricly distributed.
In this embodiment, multiple slots 12 are axisymmetricly distributed, when advantageously ensuring that stress balance and the work of rotor
Stability promotes capacity usage ratio.
As shown in Fig. 2, in the above-described embodiments, the slot 12 of multiple distributions that are centrosymmetric is divided into even number slot group,
Each slot group and slot group adjacent thereto respectively deviate identical predetermined angle round about, divide multiple slots 12 axisymmetricly
Cloth, wherein the circumferentially continuous arrangement of multiple slots 12 in each slot group along rotor punching 10.
In this embodiment, the multiple slots 12 for the distribution that is centrosymmetric are divided into even number slot group, each slot group and with
Its adjacent slot group respectively deviates identical angle round about, and such multiple slots 12 are formed by axially symmetric structure, energy
It is enough more effectively to reduce cogging torque and torque pulsation, power of motor density is improved, and structure is simple, it is easy to process.
Fig. 2 shows the offset schematic diagrames of the rotor punching 10 in the present embodiment.Specifically, as shown in Fig. 2, to be in center
Subject to symmetrical rotor punching 10, have on centrosymmetric rotor punching 10 in criss-cross four slots 12, respectively the 5th slot
120b, the 6th slot 121b, the 7th slot 122b, the 8th slot 123b, wherein as shown in the dotted ellipse in Fig. 2, the 5th slot 120b and
8th slot 123b is a slot group, and the 6th slot 121b and the 7th slot 122b are a slot group；5th slot 120b and the 8th slot 123b
(as shown by arrows) offsets by d angle in the counterclockwise direction together, so that the 5th slot 120b is offset to the position of the first slot 120a
Place, the 8th slot 123b are offset at the 4th position slot 123a；6th slot 121b and the 7th slot 122b is together along clockwise direction (such as
Shown in arrow) d angle is offset by, so that the 6th slot 121b is offset at the position of the second slot 121a, the 7th slot 122b is offset to
At the position third slot 122a, so as to form a new axially symmetric structure, i.e., the structure of rotor punching 10 shown in FIG. 1.
Certainly, embodiments herein is not limited to that, in two adjacent slot groups, the angle offset to opposite direction
It is not necessarily identical.Such as the deviation angle of above-mentioned 5th slot 120b and the 8th slot 123b is d1 (such as 5 °), and the 6th slot
The deviation angle of 121b and the 7th slot 122b are d2 (such as 10 °), and the structure after offset remains as axially symmetric structure.
Further, for the division of slot group, it can also be that each slot 12 is individually for a slot group, the as escribed above 5th
Slot 120b, the 6th slot 121b, the 7th slot 122b, the 8th slot 123b are respectively a slot group, wherein the 5th slot 120b is along counterclockwise
Offset, the 6th slot 121b is along clockwise, and the 7th slot 122b is along offset counterclockwise, and the 8th slot 123b is along clockwise, together
Sample can form axially symmetric structure.
What is needed to pay attention to is that multiple slots 12 in the same slot group are protected in this way along the circumferentially continuous arrangement of rotor punching 10
Having demonstrate,proved multiple slots 12 in each slot group is arrangement that is continuous, rather than being spaced, and such structure is simple, easy to produce.
In any of the above-described embodiment, circumferential array of multiple slots 12 along rotor punching 10.
In this embodiment, for multiple slots 12 along the circumferential array of rotor punching 10, i.e., the radial direction of each slot 12 is continuous
, multiple slots 12 of arranged radially are avoided the occurrence of, can simplify structure, improving production efficiency in this way.
The embodiment of the utility model second aspect provides a kind of rotor, including any in multiple above-mentioned first aspects
The rotor punching 10 of item embodiment；Multiple ferromagnets, each ferromagnet are mounted in a slot 12 of a rotor punching 10.
In this embodiment, by the way that the rotor punching of any one of above-mentioned first aspect embodiment is arranged in the rotor
10, so that the rotor in the present embodiment is provided with whole beneficial effects of above-described embodiment, details are not described herein.
In the above-described embodiments, in two adjacent ferromagnets, the magnetic pole pole of the side close to each other along the circumferential direction of rotor
Property is identical.
In this embodiment, in two adjacent ferromagnets, the pole polarity of the side close to each other along the circumferential direction of rotor
Identical, i.e., the polarity of adjacent magnetic pole is identical, and in other words, ferromagnet is placed along rotor circumferential direction alternating polarity, i.e. magnetic pole N and magnetic pole
N is adjacent, and magnetic pole S and magnetic pole S are adjacent, advantageously reduces cogging torque and torque pulsation in this way.
In the above-described embodiments, in the same slot group of rotor punching 10, multiple ferromagnets are continuously installed.
In this embodiment, multiple ferromagnets are continuously installed, and are conducive to the stability for improving working rotor.
It is to be appreciated that in entire rotor punching 10, it is preferable that and multiple ferromagnets are continuously installed, i.e., each slot
A ferromagnet is fitted in 12, without empty slot 12.
Optionally, of course, ferromagnet can also be installed with compartment of terrain just to install that is, in multiple slots 12 every a slot 12
One ferromagnet, in other words, there are one empty slots 12 in two adjacent ferromagnets, are guaranteeing multiple ferromagnets still in this way
While being capable of forming axially symmetric structure, the specifications and models of rotor punching 10 can also be reduced, reduce inventory, simplify production work
Skill.Such as on the rotor punching 10 with eight slots 12,2,4,6 or 8 ferromagnets can be installed, to only need
The rotor punching 10 of eight slots 12 is produced, consequently facilitating realizing large batch of production.
In the above-described embodiments, multiple ferromagnets are axisymmetricly distributed.
In this embodiment, it is distributed by multiple ferromagnetic axial symmetry, can make full use of ferromagnetic magnetism, promoted
The utilization rate of energy can also further promote the stability and reliability of working rotor.
The embodiment of the utility model third aspect provides a kind of motor, comprising: any one of above-mentioned second aspect is real
Apply the rotor of example.
By using the rotor of any one of above-mentioned second aspect embodiment, so that the motor of the present embodiment is provided with
Whole beneficial effects of embodiment are stated, details are not described herein.
It is to be appreciated that the motor in the application, includes at least AC permanent magnet synchronous motor and generator, AC permanent magnet
Synchronous motor and generator, DC Brushless Motor permasyn morot and generator in any one.
The embodiment of the utility model fourth aspect provides a mold, and includes appointing in above-mentioned first aspect for making
The rotor punching 10 of one embodiment, mold are equipped with protrusion corresponding with the slot 12 of rotor punching 10.
In this embodiment, by using the mould of the rotor punching 10 for any one of above-mentioned first aspect embodiment
Tool, the structure of mold is simple, more convenient for the processing of rotor punching 10.
As shown in Figure 1, the whole skewed pole rotor of the magneto of a specific embodiment according to the present utility model, rotor
For cutting orientation structure, rotor punching 10 includes the asymmetrically distributed slot 12 of even number, and slot 12 is for placing magnet steel；Each magnetic slot 12
Corresponding magnetic steel structure is completely the same, and each magnet steel is placed along rotor circumferential direction alternating polarity；Even number magnet steel is divided into Z group (Z
Magnet steel (h) greater than 1), and in each group must be several for continuously in a circumferential；As shown in Fig. 2, cutting with centrosymmetric structure
To on the basis of p-m rotor, skewed pole rotor is along magnet steel disalignment d angle, same group of magnet steel deviation angle and offset direction
Be consistent and with the magnet steel offset direction of adjacent sets on the contrary, but angle it is consistent.
By using the rotor punching of above-mentioned specific embodiment, the poles oblique side of the magnetic pole of rotor half and other half
To opposite；Polar arc corresponding q axis region area in part is not equal, it can be achieved that certain air gap flux density harmonic waves are cancelled out each other；The knot
The permanent magnet of structure arrangement, which can be realized, reaches oblique pole effect with whole magnetic pole misalignment, and rotor is without segmentation；In addition, the application is can
While reducing cogging torque, torque pulsation, improve power of motor density, compared to the special magnet steel that magnetizes, step skewed pole rotor
Etc. structures have many advantages, such as simple process, easily manufactured.
Fig. 3 shows skewed pole rotor and symmetric rotor back-emf harmonic content schematic diagram in this specific embodiment；Fig. 4 shows
Skewed pole rotor and symmetric rotor electromagnetic torque comparison of wave shape figure in this specific embodiment are gone out.
The technical solution of the utility model is had been described in detail above with reference to the accompanying drawings, by the technical solution of the utility model,
Certain air gap flux density harmonic waves are had effectively achieved to cancel out each other；Meanwhile the ferromagnet of such structure arrangement can realize with
Whole magnetic pole misalignment reaches oblique pole effect, and rotor is without segmentation；Further, the technical program can also reduce tooth socket and turn
Square, torque pulsation improve power of motor density, meanwhile, compared to turning in the structures such as the special magnet steel that magnetizes, step skewed pole rotor
Sub- punching, the rotor punching of the technical program have many advantages, such as simple process, easily manufactured, convenient for batch production.
In the present invention, term " first ", " second ", " third " are only used for the purpose of description, and should not be understood as
Indication or suggestion relative importance；Term " multiple " then refers to two or more, unless otherwise restricted clearly.Term " peace
Dress ", " connected ", " connection ", the terms such as " fixation " shall be understood in a broad sense, can also be with for example, " connection " may be a fixed connection
It is to be detachably connected, or be integrally connected；" connected " can be directly connected, can also be indirectly connected through an intermediary.It is right
For those skilled in the art, can understand as the case may be above-mentioned term in the present invention specifically contain
Justice.
In the description of the utility model, it is to be understood that term " on ", "lower", "left", "right", "front", "rear" etc. refer to
The orientation or positional relationship shown be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description the utility model and
Simplify description, rather than the device or unit of indication or suggestion meaning there must be specific direction, with specific orientation construction
And operation, it is thus impossible to be construed as a limitation of the present invention.
In the description of this specification, the description of term " one embodiment ", " some embodiments ", " specific embodiment " etc.
Mean that particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least the one of the utility model
In a embodiment or example.In the present specification, schematic expression of the above terms are not necessarily referring to identical embodiment
Or example.Moreover, the particular features, structures, materials, or characteristics of description can be in any one or more embodiment or examples
In can be combined in any suitable manner.
The above is only the preferred embodiments of the utility model, are not intended to limit the utility model, for this field
Technical staff for, various modifications and changes may be made to the present invention.Within the spirit and principle of the utility model,
Any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (11)
1. a kind of rotor punching characterized by comprising
Multiple slots, each slot being arranged radially along the rotor punching, the slot is for installing ferromagnet；
There is the first angle, in multiple first angles, at least one described first between two slots of arbitrary neighborhood
Angle is less than other first angles.
2. rotor punching according to claim 1, which is characterized in that
The quantity of the slot is even number.
3. rotor punching according to claim 2, which is characterized in that
Multiple slots are axisymmetricly distributed.
4. rotor punching according to claim 3, which is characterized in that
The slot of multiple distributions that are centrosymmetric is divided into even number slot group, each slot group and adjacent thereto described
Slot group respectively deviates identical predetermined angle round about, is distributed multiple slots axisymmetricly,
Wherein, circumferentially continuous arrangement of the multiple slots in each slot group along the rotor punching.
5. rotor punching according to any one of claim 1-3, which is characterized in that
Circumferential array of multiple slots along the rotor punching.
6. a kind of rotor characterized by comprising
Multiple rotor punchings according to any one of claims 1 to 5；
Multiple ferromagnets, each ferromagnet are mounted in a slot of a rotor punching.
7. rotor according to claim 6, which is characterized in that
In two adjacent ferromagnets, the pole polarity close to each other along the circumferential direction of the rotor is identical.
8. rotor according to claim 6, which is characterized in that
In the same slot group of the rotor punching, multiple ferromagnets are continuously installed.
9. rotor according to claim 6, which is characterized in that
Multiple ferromagnets are axisymmetricly distributed.
10. a kind of motor characterized by comprising
Rotor described in any one of claim 6-9.
11. a kind of mold, for making rotor punching of any of claims 1-5, which is characterized in that
The mold is equipped with protrusion corresponding with the slot of the rotor punching.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822064162.8U CN208986699U (en) | 2018-12-10 | 2018-12-10 | Rotor punching, rotor, motor and mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822064162.8U CN208986699U (en) | 2018-12-10 | 2018-12-10 | Rotor punching, rotor, motor and mold |
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| Publication Number | Publication Date |
|---|---|
| CN208986699U true CN208986699U (en) | 2019-06-14 |
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ID=66792056
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822064162.8U Active CN208986699U (en) | 2018-12-10 | 2018-12-10 | Rotor punching, rotor, motor and mold |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111162613A (en) * | 2020-01-03 | 2020-05-15 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Multiphase skewed slot shift extremely-low vibration noise permanent magnet motor |
-
2018
- 2018-12-10 CN CN201822064162.8U patent/CN208986699U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111162613A (en) * | 2020-01-03 | 2020-05-15 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Multiphase skewed slot shift extremely-low vibration noise permanent magnet motor |
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