CN108258863A - The double-stator structure of permanent magnet synchronous motor - Google Patents
The double-stator structure of permanent magnet synchronous motor Download PDFInfo
- Publication number
- CN108258863A CN108258863A CN201611237022.5A CN201611237022A CN108258863A CN 108258863 A CN108258863 A CN 108258863A CN 201611237022 A CN201611237022 A CN 201611237022A CN 108258863 A CN108258863 A CN 108258863A
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- China
- Prior art keywords
- bearing
- stator
- shaft
- housing
- face
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- 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
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 15
- 230000007704 transition Effects 0.000 claims description 6
- 238000001727 in vivo Methods 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K16/00—Machines with more than one rotor or stator
- H02K16/04—Machines with one rotor and two stators
Abstract
The invention discloses a kind of double-stator structures of permanent magnet synchronous motor, the housing of this structure is set between drive end bearing bracket and rear end cap, first stator is set on housing inner ring, shaft end is annulus end face, shaft front end is set on by fore bearing in the axis hole of drive end bearing bracket, seam allowance is equipped on the inside of rear end cap, fixing axle front end is set on the annulus end face inner ring of shaft by inner bearing, fixed shaft rear end is set on the seam allowance on the inside of rear end cap, second stator is set on fixing axle outer ring, bearing inner race is set on fixed shaft rear end outer ring afterwards, bearing holder (housing, cover) inner ring is set on rear bearing outer ring afterwards, the front/rear end of rotor core connects the annulus end face of shaft end and rear bearing holder (housing, cover) end face and between the first stator and the second stator respectively.This structure changes the structure of conventional motors list stator and single rotor, is coordinated using bimorph transducer and rotor core, so as to further improve the power density of motor, adapts to requirements at the higher level of the new-energy automobile to driving motor.
Description
Technical field
The present invention relates to a kind of double-stator structures of permanent magnet synchronous motor.
Background technology
Permanent magnet synchronous motor has the characteristics that simple in structure, reliable, power density is big, good speed adjustment features, therefore wide
The general driving motor applied to new-energy automobile.But the developing goal of current new-energy automobile driving motor is that high quality power is close
Degree and high size power density, i.e. motor can export the power of bigger under the premise of phase homogenous quantities and same apparent size；
And motor affects further improving for power of motor density generally using the structure of single stator and single rotor at present.
Invention content
The technical problems to be solved by the invention are to provide a kind of double-stator structure of permanent magnet synchronous motor, this structure changes
The structure of conventional motors list stator and single rotor is coordinated using bimorph transducer and rotor core, so as to further improve motor
Power density, adapt to new-energy automobile to the requirements at the higher level of driving motor.
In order to solve the above technical problems, the double-stator structure of permanent magnet synchronous motor of the present invention includes shaft, rotor core, preceding
End cap, rear end cap, fore bearing, rear bearing, the first stator and housing, the housing are set between the drive end bearing bracket and rear end cap,
First stator is set on the housing inner ring, this structure further includes the second stator, fixing axle, inner bearing and rear bearing holder (housing, cover), institute
Shaft end is stated as annulus end face, the shaft front end is set on by the fore bearing in the axis hole of the drive end bearing bracket, after described
Seam allowance is equipped on the inside of end cap, the fixing axle front end is set on the annulus end face inner ring of the shaft by the inner bearing, described
Fixed shaft rear end is set on the seam allowance on the inside of the rear end cap, and second stator is set on the fixing axle outer ring, the rear bearing
Inner ring is set on the fixed shaft rear end outer ring, and the rear bearing holder (housing, cover) inner ring is set on the rear bearing outer ring, the rotor core
Front/rear end connects the annulus end face of the shaft end and rear bearing holder (housing, cover) end face and positioned at first stator and the respectively
Between two stators.
Further, the front/rear end of the rotor core leads to the annulus end face of the shaft end and rear bearing holder (housing, cover) end face
Cross screw connection.
Further, transition coordinates between the rear bearing holder (housing, cover) inner ring and the rear bearing outer ring.
Further, the rear clearance fit between bearing inner race and the fixing axle.
Further, the fore bearing inner ring coordinates with shaft front end transition, the front axle bearing outer-ring and the front end
Lid axis hole clearance fit.
Since the double-stator structure of permanent magnet synchronous motor of the present invention employs above-mentioned technical proposal, i.e. before the housing of this structure is set on
Between end cap and rear end cap, the first stator is set on housing inner ring, and shaft end is annulus end face, and shaft front end is set by fore bearing
In in the axis hole of drive end bearing bracket, being equipped with seam allowance on the inside of rear end cap, fixing axle front end is set on by inner bearing in the annulus end face of shaft
Circle, fixed shaft rear end are set on the seam allowance on the inside of rear end cap, and the second stator is set on fixing axle outer ring, and rear bearing inner race is set on fixing axle
Rear end outer ring, rear bearing holder (housing, cover) inner ring are set on rear bearing outer ring, and the front/rear end of rotor core connects the annulus of shaft end respectively
End face and rear bearing holder (housing, cover) end face and between the first stator and the second stator.This structure change conventional motors list stator and
The structure of single rotor is coordinated using bimorph transducer and rotor core, so as to further improve the power density of motor, adapts to new energy
Source automobile is to the requirements at the higher level of driving motor.
Description of the drawings
The present invention is described in further detail with embodiment below in conjunction with the accompanying drawings：
Fig. 1 is the double-stator structure schematic diagram of permanent magnet synchronous motor of the present invention.
Specific embodiment
Embodiment is as shown in Figure 1, the double-stator structure of permanent magnet synchronous motor of the present invention includes shaft 1, rotor core 2, preceding
End cap 5, rear end cap 6, fore bearing 3, rear bearing 4, the first stator 8 and housing 7, the housing 7 are set on the drive end bearing bracket 5 and rear end
Between lid 6, first stator 8 is set on 7 inner ring of housing, this structure further includes the second stator 9, fixing axle 11, inner bearing
10 and rear bearing holder (housing, cover) 12,1 end of shaft is annulus end face 13, and 1 front end of shaft is set on described by the fore bearing 3
In the axis hole of drive end bearing bracket 5,6 inside of rear end cap is equipped with seam allowance 61, and 11 front end of fixing axle is set by the inner bearing 10
In the annulus end face inner ring of the shaft 1,11 rear end of fixing axle is set on the seam allowance 61 of 6 inside of rear end cap, and described the
Two stators 9 are set on 11 outer ring of fixing axle, and 4 inner ring of the rear bearing is set on the 11 rear end outer ring of fixing axle, the rear axle
12 inner ring of bearing sleeve is set on rear 4 outer ring of bearing, and the front/rear end of the rotor core 2 connects 1 end of shaft respectively
Annulus end face 13 and 12 end face of rear bearing holder (housing, cover) and between 8 and second stator 9 of the first stator.
Preferably, the front/rear end of the rotor core 2 and the annulus end face 13 of 1 end of shaft and rear bearing holder (housing, cover) 12
End face is connected by screw.
Preferably, transition coordinates between rear 12 inner ring of bearing holder (housing, cover) and rear 4 outer ring of bearing.
Preferably, the rear clearance fit between 4 inner ring of bearing and the fixing axle 11.
Preferably, 3 inner ring of fore bearing coordinates with 1 front end transition of the shaft, 3 outer ring of fore bearing with it is described before
5 axis hole clearance fit of end cap.
The annulus end face inner cavity of inner shaft bearing outer-ring and shaft coordinates in this structure, forms the support knot of inner shaft bearing outer-ring rotation
Structure, inner bearing inner ring coordinate with fixing axle, and fixing axle is enable to support the second stator；The inner ring of bearing outer ring and rear bearing holder (housing, cover) afterwards
Cooperation, rear bearing inner race coordinate with fixing axle, bearing outer ring rotatable support structure after formation；The seam allowance of fixing axle and rear end cap connects
It connects, fixing axle is fixedly connected with rear end cap；Fore bearing inner ring and shaft cooperation, outer ring and drive end bearing bracket shaft hole matching, form and turn
The support of axis；Drive end bearing bracket and rear end cap are closed by screw and housing handle, form a complete electric machine structure.
This structure causes motor to have bimorph transducer, changes conventional motors stator structure corresponding with rotor, utilizes and turns
The annulus end face and rear bearing holder (housing, cover) end face of sub- iron core both ends and shaft connect, so as to which motor center be made to reserve certain space,
The second stator is set by fixing axle in the space, wherein the inner ring of inner bearing and rear bearing is fixed, outer ring rotates so that rotor
Iron core rotates between the first stator and the second stator, increases the electromagnetism sense of rotor core and the first stator and the second stator
Should, so as to improve the power density of motor under unit mass and unit sizes.
Claims (5)
1. a kind of double-stator structure of permanent magnet synchronous motor, including shaft, rotor core, drive end bearing bracket, rear end cap, fore bearing, after
Bearing, the first stator and housing, the housing are set between the drive end bearing bracket and rear end cap, and first stator is set on the shell
Circle in vivo, it is characterised in that：The second stator, fixing axle, inner bearing and rear bearing holder (housing, cover) are further included, the shaft end is annulus end
Face, the shaft front end are set on by the fore bearing in the axis hole of the drive end bearing bracket, and seam allowance, institute are equipped on the inside of the rear end cap
State fixing axle front end by the inner bearing be set on the shaft annulus end face inner ring, the fixed shaft rear end be set on it is described after
Seam allowance on the inside of end cap, second stator is set on the fixing axle outer ring, after the rear bearing inner race is set on the fixing axle
Hold outer ring, it is described after bearing holder (housing, cover) inner ring be set on it is described after bearing outer ring, the front/rear end of the rotor core connects described respectively
The annulus end face of shaft end and rear bearing holder (housing, cover) end face and between first stator and the second stator.
2. the double-stator structure of permanent magnet synchronous motor according to claim 1, it is characterised in that：Before the rotor core
Rear end face is connected by screw with the annulus end face of the shaft end and rear bearing holder (housing, cover) end face.
3. the double-stator structure of permanent magnet synchronous motor according to claim 1 or 2, it is characterised in that：Bearing holder (housing, cover) after described
Transition coordinates between inner ring and the rear bearing outer ring.
4. the double-stator structure of permanent magnet synchronous motor according to claim 1 or 2, it is characterised in that：After described in bearing
Clearance fit between circle and the fixing axle.
5. the double-stator structure of permanent magnet synchronous motor according to claim 1 or 2, it is characterised in that：In the fore bearing
Circle coordinates with shaft front end transition, the front axle bearing outer-ring and the drive end bearing bracket axis hole clearance fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611237022.5A CN108258863A (en) | 2016-12-28 | 2016-12-28 | The double-stator structure of permanent magnet synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611237022.5A CN108258863A (en) | 2016-12-28 | 2016-12-28 | The double-stator structure of permanent magnet synchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108258863A true CN108258863A (en) | 2018-07-06 |
Family
ID=62719665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611237022.5A Pending CN108258863A (en) | 2016-12-28 | 2016-12-28 | The double-stator structure of permanent magnet synchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108258863A (en) |
-
2016
- 2016-12-28 CN CN201611237022.5A patent/CN108258863A/en active Pending
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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: 20180706 |