CN108616178A - Rotor assembly, motor, automobile - Google Patents
Rotor assembly, motor, automobile Download PDFInfo
- Publication number
- CN108616178A CN108616178A CN201810651402.6A CN201810651402A CN108616178A CN 108616178 A CN108616178 A CN 108616178A CN 201810651402 A CN201810651402 A CN 201810651402A CN 108616178 A CN108616178 A CN 108616178A
- Authority
- CN
- China
- Prior art keywords
- heat dissipation
- baffle
- conducting bar
- rotor assembly
- rotor core
- 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.)
- Granted
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]
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/22—Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
-
- 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
Abstract
A kind of rotor assembly of present invention offer, motor, automobile.The rotor assembly, including the first baffle, rotor core, second baffle being engaged successively, have along its axially extending several straight slot on the rotor core, it is fitted with several permanent magnets in several straight slots, several permanent magnets form several clearance grooves towards rotor core periphery wall side and the rotor core, heat dissipation conducting bar is fitted in several clearance grooves, at least one one end with the heat dissipation conducting bar is connect in the first baffle or second baffle.A kind of rotor assembly according to the present invention, motor, automobile are capable of the heat dissipation of strong guarantee rotor core and permanent magnet, effectively control the Wen Sheng of rotor core and permanent magnet, reduce permanent magnet since high temperature caused by temperature is excessively high demagnetizes phenomenon.
Description
Technical field
The invention belongs to technical field of motors, and in particular to a kind of rotor assembly, motor, automobile.
Background technology
New-energy automobile will gradually replace fuel vehicle as the following technique direction for reducing carbon emission in the automotive field whole world,
New-energy automobile generally uses permanent magnet synchronous motor, permanent magnet synchronous motor to have many advantages, such as that efficient, low noise, majority use neodymium
Iron boron permanent magnet provides rotor-exciting, but neodymium iron boron is easy to happen heat demagnetization phenomenon, especially Automobile drive electricity in high-temperature condition
The running environment of machine is severe, and to rotor heat dissipation, only the air in motor realizes motor stator and electric machine casing at present, and forever
It usually disregards there are gap, this gap between magnet and rotor core or uses encapsulating mode, the case where not handling
Under, the heat of permanent magnet then can only outward be radiated by air in gap, and efficiency is very poor, when using encapsulating processing, then obviously
The heat dissipation for having blocked permanent magnet is then concentrated mainly on rotor permanent magnet demagnetization problem during design of electrical motor, currently used
Technological means is to ensure that permanent magnet will not demagnetize by increasing magnet steel dosage or improving the magnet steel trade mark, this undoubtedly makes electricity
The manufacturing cost of machine improves.
In addition, the fixation for the permanent magnet in PM rotor component, mostly uses process for filling colloid or to rotor at present
Plastic packaging is carried out to realize, the heat dissipation for leading to permanent magnet is seriously obstructed using process for filling colloid, needs high temperature when using plastic package process,
It is avoided while demagnetizing phenomenon to also result in permanent magnet high temperature, therefore how permanent magnet is carried out effectively fixed
High temperature demagnetization phenomenon generates, and merits attention, is based on this, proposes the present invention.
Invention content
Therefore, the technical problem to be solved in the present invention is to provide a kind of rotor assembly, motor, automobile, can try hard to keep
The heat dissipation of rotor core and permanent magnet is demonstrate,proved, the Wen Sheng of rotor core and permanent magnet is effectively controlled, reduces permanent magnet due to temperature mistake
High temperature caused by height demagnetizes phenomenon.
To solve the above-mentioned problems, the present invention provides a kind of rotor assembly, including be engaged successively first baffle, turn
Sub- iron core, second baffle have on the rotor core and are fitted with along its axially extending several straight slot, several straight slots
Several permanent magnets, several permanent magnets form several gaps towards rotor core periphery wall side and the rotor core
Slot, is fitted with heat dissipation conducting bar in several clearance grooves, at least one with the heat dissipation in the first baffle or second baffle
One end of conducting bar connects.
Preferably, the heat dissipation conducting bar axially penetrates through the rotor core along the rotor core.
Preferably, the material of the heat dissipation conducting bar is non-magnetic metal material.
Preferably, transition coordinates between the heat dissipation conducting bar and the clearance groove.
Preferably, the heat dissipation conducting bar turns with the clearance groove along described in the cross sectional shape on its length direction
Shape on the radial section of sub- iron core matches.
Preferably, the heat dissipation conducting bar and the first baffle are integrally formed, and the heat dissipation conducting bar length is L, described turn
Sub- iron core has axial length H, L=H.
Preferably, the first baffle, and/or, second baffle has plug-in opening, and the heat dissipation conducting bar can be by described
Plug-in opening is plugged in the clearance groove.
Preferably, it is described heat dissipation conducting bar include with the first length L1 first radiate conducting bar, with the second length L2
Second heat dissipation conducting bar, the first heat dissipation conducting bar and the first baffle are integrally formed, the second heat dissipation conducting bar and described the
Two baffles are integrally formed, and the rotor core has axial length H, L1+L2≤H.
Preferably, there are the first baffle several heat dissipations repeated hole, several heat dissipations to be gone to go repeated hole along the first gear
The circumferential direction of plate is uniformly distributed, and/or, there are the second baffle several heat dissipations repeated hole, several heat dissipations to be gone to go repeated hole along institute
The circumferential direction for stating second baffle is uniformly distributed.
The present invention also provides a kind of motors, including above-mentioned rotor assembly.
The present invention also provides a kind of automobiles, including above-mentioned motor.
A kind of rotor assembly provided by the invention, motor, automobile, due to being plugged in the clearance groove using heat dissipation conducting bar
In, heat dissipation conducting bar is at least part of to be contacted with the permanent magnet, it is a part of contacted with the rotor core, heat dissipation at this time is led
Heat in the permanent magnet and rotor core can be transferred to therewith the first baffle that at least one end is connected in time by item
Or second baffle, since the first baffle or second baffle are in the both ends of the rotor core, radiating surface is more spacious
It opens, therefore radiating efficiency is improved significantly, it can be seen that, which can significantly improve the heat dissipation of the rotor assembly
Ability, when the rotor assembly is assembled in motor, the rotor core and permanent magnetism body temperature that can be substantially reduced in motor operation
It rises, avoids rotor core and permanent magnetism body heat from demagnetizing, while improving the output performance of motor.
Description of the drawings
Fig. 1 is the configuration schematic diagram of the rotor assembly of the embodiment of the present invention；
Fig. 2 is the partial enlargement structural representation at A in Fig. 1；
Fig. 3 is the configuration schematic diagram of the rotor assembly of another embodiment of the present invention；
Fig. 4 is the partial enlargement structural representation at B in Fig. 3.
Reference numeral is expressed as：
1, first baffle；11, plug-in opening；12, repeated hole is removed in heat dissipation；2, rotor core；3, second baffle；4, permanent magnet；5、
Clearance groove；6, radiate conducting bar；61, the first heat dissipation conducting bar；62, the second heat dissipation conducting bar.
Specific implementation mode
In conjunction with referring to shown in Fig. 1 to 4, according to an embodiment of the invention, a kind of rotor assembly is provided, including contact match successively
First baffle 1, rotor core 2, the second baffle 3 of conjunction have on the rotor core 2 along its axially extending several straight slot,
Be fitted with several permanent magnets 4 in several straight slots, several permanent magnets 4 towards 2 periphery wall side of the rotor core with
The rotor core 2 forms several clearance grooves 5, be fitted in several clearance grooves 5 heat dissipation conducting bar 6, the first baffle 1 or
At least one one end with the heat dissipation conducting bar 6 is connect in second baffle 3.In the technical solution, due to being inserted using heat dissipation conducting bar 6
Loaded in the clearance groove 5, heat dissipation conducting bar 6 is at least part of contact with the permanent magnet 4, a part of and rotor core
Heat in the permanent magnet 4 and rotor core 2 can be in time transferred to therewith at least by 2 contacts, heat dissipation conducting bar 6 at this time
The first baffle 1 or second baffle 3 that one end is connected, since the first baffle 1 or second baffle 3 are in the rotor iron
The both ends of core 2, radiating surface more open wide, therefore radiating efficiency is improved significantly, it can be seen that, which can be bright
The aobvious heat-sinking capability for improving the rotor assembly can be substantially reduced motor fortune when the rotor assembly is assembled in motor
4 Wen Sheng of rotor core 2 and permanent magnet in row avoids the 4 heat demagnetization of rotor core 2 and permanent magnet, while improving the output of motor
Performance.It is understood that the material of the first baffle 1, second baffle 3 is preferably metal material.
Further to promote the contact area of the heat dissipation conducting bar 6 and the permanent magnet 4 and rotor core 2, with further
Improve the heat conduction and heat radiation ability of the heat dissipation conducting bar 6, it is preferable that heat dissipation the axially penetrating through along the rotor core 2 of conducting bar 6
The rotor core 2.The material of the heat dissipation conducting bar 6 is preferably non-magnetic metal material, such as copper, the aluminium in non-black metal
Deng the light-weight design theory based on design of electrical motor, preferably aluminium.Certainly, in order to ensure the heat dissipation conducting bar 6 in the gap
Positional stability in slot 5, it is preferable that before being inserted into the heat dissipation conducting bar 6, the surface of the heat dissipation conducting bar 6 is applied
Glue processing, even if also the surface of the heat dissipation conducting bar 6 has thin adhesive layer.
Heat dissipation conducting bar 6 and the clearance groove 5 may be used the mode of clearance fit, but due to gap fiting mode,
On the one hand limited to the fixed function of permanent magnet 4, on the other hand, deposited between permanent magnet 4 and heat dissipation conducting bar 6 with being still difficult to avoid that
In gap, it is unfavorable that this certainly causes radiating efficiency, it is therefore preferred that mistake between the heat dissipation conducting bar 6 and the clearance groove 5
Cooperation is crossed, heat dissipation conducting bar 6 at this time not only acts as the effect of heat dissipation heat conduction, is also carried out to the rotor core 2, permanent magnet 4
Rational support fixed function, therefore rotor structure intensity can be improved, when the rotor assembly, which is assembled in, to be operated in motor,
Due to having obtained corresponding fixation radial play will not occur for permanent magnet 4, to reduce motor oscillating and noise.
Further, the heat dissipation conducting bar 6 is on cross sectional shape and 5 edge of the clearance groove on its length direction
Shape on the radial section of the rotor core 2 matches, can ensure at this time it is described heat dissipation conducting bar 6 periphery wall with it is described
The peripheral wall of clearance groove 5 completely attaches to, and further promotes the heat conduction and heat radiation performance of the heat dissipation conducting bar 6.
A kind of specific set-up mode as the heat dissipation conducting bar 6, it is preferable that the heat dissipation conducting bar 6 and the first gear
Plate 1 is integrally formed, and 6 length of heat dissipation conducting bar is L, and the rotor core 2 has axial length H, L=H, the technical solution energy
Enough ensure that length of the heat dissipation conducting bar 6 in its longitudinal direction with the clearance groove 5 exactly matches, can further promote institute
The heat conduction and heat radiation performance of heat dissipation conducting bar 6 is stated, certainly, integrally formed design method can be conducive to the efficiency for improving assembling.
The specific set-up mode of another kind as the heat dissipation conducting bar 6, it is preferable that the first baffle 1, and/or, second
There is baffle 3 plug-in opening 11, the heat dissipation conducting bar 6 can be plugged in the clearance groove 5 by the plug-in opening 11, this kind of side
The heat dissipation conducting bar 6 of formula setting has higher assembly flexibility.
It is, of course, understood that the heat dissipation conducting bar 6 may include the first heat dissipation conducting bar with the first length L1
61, the second heat dissipation conducting bar 62 with the second length L2, the first heat dissipation conducting bar 61 are integrally formed with the first baffle 1,
Second heat dissipation conducting bar 62 and the second baffle 3 are integrally formed, the rotor core 2 have axial length H, L1+L2≤
H, it is preferable that L1+L2=H, in this technical solution, by the heat dissipation conducting bar 6 be set as the first heat dissipation conducting bar 61 independent of each other,
Second heat dissipation conducting bar 62, and first heat dissipation conducting bar 61, second radiate conducting bar 62 respectively with the first baffle 1, second baffle 3 one
It is body formed, the first baffle 1, second baffle 3 can be made to be designed as identical component, general applicability higher.
In order to further increase the radiating efficiency of the rotor assembly, it is further ensured that the rotor assembly or even motor
Lightweight is arranged, it is preferable that there are the first baffle 1 several heat dissipations repeated hole 12, several heat dissipations to be gone to go repeated hole 12 along institute
The circumferential direction for stating first baffle 1 is uniformly distributed, and/or, there are the second baffle 3 several heat dissipations to remove repeated hole 12, several described scattered
Heat goes repeated hole 12 uniformly distributed along the circumferential direction of the second baffle 3.
The present invention also provides a kind of motor, including above-mentioned rotor assembly, the rotor that can be substantially reduced in motor operation
4 Wen Sheng of iron core 2 and permanent magnet avoids the 4 heat demagnetization of rotor core 2 and permanent magnet, while improving the output performance of motor
The present invention also provides a kind of automobile, including above-mentioned motor, the rotor core 2 that can be substantially reduced in motor operation
And 4 Wen Sheng of permanent magnet, the 4 heat demagnetization of rotor core 2 and permanent magnet is avoided, while improving the output performance of motor
Those skilled in the art will readily recognize that under the premise of not conflicting, above-mentioned each advantageous manner can be free
Ground combination, superposition.
The above is merely preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
All any modification, equivalent and improvement made by within principle etc., should all be included in the protection scope of the present invention.Above only
It is the preferred embodiment of the present invention, it is noted that for those skilled in the art, do not departing from this hair
Under the premise of bright technical principle, several improvements and modifications can also be made, these improvements and modifications also should be regarded as the guarantor of the present invention
Protect range.
Claims (11)
1. a kind of rotor assembly, which is characterized in that including be engaged successively first baffle (1), rotor core (2), second
Baffle (3), have on the rotor core (2) be fitted with along its axially extending several straight slot, several straight slots it is several
Permanent magnet (4), several permanent magnets (4) are formed towards the rotor core (2) periphery wall side and the rotor core (2)
Several clearance grooves (5) are fitted with heat dissipation conducting bar (6), the first baffle (1) or second baffle in several clearance grooves (5)
(3) at least one one end with the heat dissipation conducting bar (6) is connect in.
2. rotor assembly according to claim 1, which is characterized in that the heat dissipation conducting bar (6) is along the rotor core (2)
Axially penetrate through the rotor core (2).
3. rotor assembly according to claim 1, which is characterized in that the material of the heat dissipation conducting bar (6) is non-magnetic gold
Belong to material.
4. rotor assembly according to claim 1, which is characterized in that the heat dissipation conducting bar (6) and the clearance groove (5) it
Between transition coordinate.
5. rotor assembly according to claim 1, which is characterized in that the heat dissipation conducting bar (6) is perpendicular to its length side
Upward cross sectional shape matches with shape of the clearance groove (5) on the radial section of the rotor core (2).
6. rotor assembly according to claim 1, which is characterized in that the heat dissipation conducting bar (6) and the first baffle (1)
It is integrally formed, heat dissipation conducting bar (6) length is L, and the rotor core (2) has axial length H, L=H.
7. rotor assembly according to claim 1, which is characterized in that the first baffle (1), and/or, second baffle
(3) there is plug-in opening (11), the heat dissipation conducting bar (6) can be plugged in by the plug-in opening (11) in the clearance groove (5).
8. rotor assembly according to claim 1, which is characterized in that the heat dissipation conducting bar (6) includes having the first length
L1 first heat dissipation conducting bar (61), with the second length L2 second heat dissipation conducting bar (62), it is described first heat dissipation conducting bar (61) with
The first baffle (1) is integrally formed, and the second heat dissipation conducting bar (62) is integrally formed with the second baffle (3), described turn
Sub- iron core (2) has axial length H, L1+L2≤H.
9. rotor assembly according to any one of claim 1 to 8, which is characterized in that the first baffle (1) is if having
Dry heat dissipation goes repeated hole (12), several heat dissipations to go repeated hole (12) uniformly distributed along the circumferential direction of the first baffle (1), and/or,
There are the second baffle (3) several heat dissipations repeated hole (12), several heat dissipations to be gone to go repeated hole (12) along the second baffle (3)
Circumferential direction it is uniformly distributed.
10. a kind of motor, including rotor assembly, which is characterized in that the rotor assembly is any one of claim 1 to 9 institute
The rotor assembly stated.
11. a kind of automobile, including motor, which is characterized in that the motor is motor according to any one of claims 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810651402.6A CN108616178B (en) | 2018-06-22 | 2018-06-22 | Rotor subassembly, motor, car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810651402.6A CN108616178B (en) | 2018-06-22 | 2018-06-22 | Rotor subassembly, motor, car |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108616178A true CN108616178A (en) | 2018-10-02 |
| CN108616178B CN108616178B (en) | 2020-11-24 |
Family
ID=63665568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810651402.6A Active CN108616178B (en) | 2018-06-22 | 2018-06-22 | Rotor subassembly, motor, car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108616178B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110176817A (en) * | 2019-06-26 | 2019-08-27 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor core, rotor, motor, compressor |
| CN111555479A (en) * | 2020-05-26 | 2020-08-18 | 安徽美芝精密制造有限公司 | Motor, compressor and refrigeration plant |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN108616178B (en) | 2020-11-24 |
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