CN209358316U - A kind of hub motor based on magnetism-collected structure rotor axial magnetic field - Google Patents
A kind of hub motor based on magnetism-collected structure rotor axial magnetic field Download PDFInfo
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- CN209358316U CN209358316U CN201920307871.6U CN201920307871U CN209358316U CN 209358316 U CN209358316 U CN 209358316U CN 201920307871 U CN201920307871 U CN 201920307871U CN 209358316 U CN209358316 U CN 209358316U
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Abstract
The utility model discloses a kind of hub motors based on magnetism-collected structure rotor axial magnetic field, including stator module and the rotor assembly being articulated with the stator module, the rotor assembly includes the rotor case for being sheathed on the stator module periphery, and the rotor yoke assembly for being anchored on the rotor case two-port and being articulated respectively with the main shaft of the stator module, the rotor yoke assembly includes rotor yoke, and the circumferential several groups fan-shaped magnet for being distributed in the rotor yoke one side, the another side of the rotor yoke is circumferentially evenly equipped with several for reducing the weight loss groove of motor self weight, fan-shaped magnet described in every group is provided with orthogonal first fan-shaped magnet of magnetizing direction and the second fan-shaped magnet.The weight of rotor yoke is effectively reduced by the setting of weight loss groove with the hub motor that this structure designs, the specific surface area of rotor is then effectively increased, to effectively improve the radiating efficiency of motor and the torque density of motor and power density.
Description
Technical field
The utility model relates to automobile technical field more particularly to a kind of wheel hubs based on magnetism-collected structure rotor axial magnetic field
Motor.
Background technique
Hub motor is mounted on wheel end, increases the unsprung mass of vehicle, has very big shadow to the driving ride comfort of vehicle
It rings.So hub motor design has very stringent lightweight index.Conventional external rotor permanent magnet synchronous hub motor is in specific ruler
Very little lower power density and torque density have certain upper limit, are added significantly to the unsprung mass of vehicle, and make hub motor
Power density and torque density it is lower, heat dissipation performance is poor.
Utility model content
The purpose of this utility model is to provide a kind of hub motor based on magnetism-collected structure rotor axial magnetic field, the wheel hubs
Motor can effectively increase the specific surface area of rotor by the setting of weight loss groove, promote motor radiating efficiency, then effectively be promoted
Torque density and power density.
For this purpose, the utility model uses following technical scheme:
A kind of hub motor based on magnetism-collected structure rotor axial magnetic field, including stator module and with the stator module phase
The rotor assembly of pivot joint, the rotor assembly include the rotor case for being sheathed on the stator module periphery, and are anchored on described
Rotor case two-port and the rotor yoke assembly being articulated respectively with the main shaft of the stator module, the rotor yoke assembly include turning
Sub- yoke, and the circumferential several groups fan-shaped magnet for being distributed in the rotor yoke one side, the another side of the rotor yoke are circumferential
It is evenly equipped with several and is provided with magnetizing direction for reducing the weight loss groove of motor self weight, fan-shaped magnet described in every group and is mutually perpendicular to
The first fan-shaped magnet and the second fan-shaped magnet.
Wherein, the weight loss groove is along the radial recessed scalloped recess of the rotor yoke.
Wherein, the arc length of first fan-shaped magnet is greater than the arc length of second fan-shaped magnet.
Wherein, the fan-shaped magnet as described in several groups encloses set made of be fastened with hub bearing, the hub bearing in pit
It is connect with the main axis.
Wherein, the side that the rotor yoke is evenly equipped with the fan-shaped magnet is arranged towards the stator module.
Wherein, the edge circumferential direction extension of the rotor case has flange, and the edge of the flange and the rotor yoke passes through spiral shell
Silk fastening.
Wherein, the stator module includes stator support, and the enameled wire of winding and the stator support.
Wherein, the main shaft is equipped in the middle part of the stator support, the main shaft and the stator support fasten.
Wherein, the one side of the rotor yoke is integrally recessed with annular groove, and the fan is accommodated in the annular groove
Shape magnet.
Wherein, the hub bearing is provided with velocity location sensor.
The utility model has the beneficial effects that the utility model provides a kind of wheel based on magnetism-collected structure rotor axial magnetic field
Hub motor, including stator module and the rotor assembly being articulated with the stator module, the rotor assembly includes being sheathed on institute
State the rotor case of stator module periphery, and be anchored on the rotor case two-port and respectively with the main shaft phase of the stator module
The rotor yoke assembly of pivot joint, the rotor yoke assembly includes rotor yoke, and if circumferential being distributed in the rotor yoke one side
Dry group fan-shaped magnet, the another side of the rotor yoke are circumferentially evenly equipped with several for reducing the weight loss groove of motor self weight, often
The group fan-shaped magnet is provided with orthogonal first fan-shaped magnet of magnetizing direction and the second fan-shaped magnet.It is set with this structure
The hub motor of meter effectively reduces the weight of rotor yoke by the setting of weight loss groove, then effectively increases the ratio table of rotor
Area, thus the effective torque density and power density of promotion motor radiating efficiency and motor.
Detailed description of the invention
Fig. 1 is a kind of exploded view of the hub motor based on magnetism-collected structure rotor axial magnetic field of the utility model.
Fig. 2 is the axonometric drawing of rotor assembly inner surface in Fig. 1.
Fig. 3 is the axonometric drawing of rotor assembly outer surface in Fig. 1.
Specific embodiment
Further illustrate the technical solution of the utility model below with reference to the accompanying drawings and specific embodiments.
In conjunction with shown in Fig. 1 to Fig. 3, a kind of wheel hub electricity based on magnetism-collected structure rotor axial magnetic field is present embodiments provided
Machine, including stator module 1 and the rotor assembly being articulated with the stator module 1, the rotor assembly is described including being sheathed on
The rotor case 21 of 1 periphery of stator module, and it is anchored on 21 two-port of rotor case and the respectively master with the stator module 1
The rotor yoke assembly 22 that axis 3 is articulated, the rotor yoke assembly 22 includes rotor yoke 221, and is circumferentially distributed in the rotor
The several groups fan-shaped magnet 222 of 221 one side of yoke, the another side of the rotor yoke 221 are circumferentially evenly equipped with several for subtracting
The weight loss groove 2211 of few motor self weight, it is fan-shaped that fan-shaped magnet 222 described in every group is provided with magnetizing direction orthogonal first
Magnet 2221 and the second fan-shaped magnet 2222.
Specifically, weight loss groove is opened in 22 magnetic flux of rotor yoke assembly most in order to not influence motor performance in the present embodiment
The magnetic flux in small region, the region is less than 22 maximum flux 5% of rotor yoke assembly.
Further, in the present embodiment, as shown in figure 3, the weight loss groove 2211 is radial recessed along the rotor yoke 221
Scalloped recess, the both ends of scalloped recess are in arc-shaped setting, which is located remotely from the first fan-shaped magnet 2221
With one end of the cambered surface of the second fan-shaped magnet 2222.
In addition, in order to effectively promote the magnetic flux based on magnetism-collected structure rotor, first fan-shaped magnet in the present embodiment
2221 arc length is greater than the arc length of second fan-shaped magnet 2222.
Further, in the present embodiment the fan-shaped magnet 222 as described in several groups enclose set made of be fastened with wheel hub in pit
Bearing 4, the hub bearing 4 is sheathed on main shaft and main shaft 3 is rotatablely connected, and the rotor yoke 221 is evenly equipped with the sector magnet
The side of body 222 is arranged towards the stator module 1.
In order to facilitate fixation, the edge circumferential direction extension of the rotor case 21 in the present embodiment has a flange, the flange with
The edge of the rotor yoke 221 is fixed by screw.
The present embodiment be arranged in the stator module 1 in rotor case include stator support 11, and winding with it is described fixed
The enameled wire of submounts 11, and the middle part of the stator support 11 is equipped with the main shaft 3, the main shaft 3 and the stator branch
Frame 11 fastens.
In addition, the stickup of fan-shaped magnet 222 positions for convenience in the present embodiment, the one side one of the rotor yoke 221
Body is recessed with annular groove, and the fan-shaped magnet 222 is pasted in annular groove in groups.
The present embodiment is additionally provided with velocity potential at the hub bearing 4 to further obtain motor operating parameters
Sensor (not marking in figure) is set, which is electrically connected with external electric control gear.
The motor designed using the above structure, by being less than 22 maximum flux of rotor yoke assembly, 5% position in magnetic flux
The setting for the weight loss groove that place opens up.So that rotor yoke is thinner, the quality of rotor portion is further decreased.Axial magnetic field is forever
Magnetic-synchro motor is higher compared to the torque density of radial magnetic field permanent magnet synchronous motor, therefore reaches the motor matter of identical torque value
Amount is smaller, is more in line with the smaller principle of vehicle unsprung mass.At the same time, the structure design of reasonable rotor weight loss groove, can
It is more advantageous to motor radiating to increase the specific surface area of rotor, further increase the torque density and power density of motor.
Technical principle of the utility model has been described above with reference to specific embodiments.These descriptions are intended merely to explain this reality
With novel principle, and it cannot be construed to the limitation to scope of protection of the utility model in any way.Based on the explanation herein,
Those skilled in the art, which does not need to pay for creative labor, can associate with other specific implementation modes of this utility model,
These modes are fallen within the protection scope of the utility model.
Claims (10)
1. a kind of hub motor based on magnetism-collected structure rotor axial magnetic field, including stator module and with the stator module phase pivot
The rotor assembly connect, the rotor assembly include the rotor case for being sheathed on the stator module periphery, and are anchored on described turn
Sub- shell two-port and the rotor yoke assembly being articulated respectively with the main shaft of the stator module, it is characterised in that: the rotor yoke
Component includes rotor yoke, and the circumferential several groups fan-shaped magnet for being distributed in the rotor yoke one side, the rotor yoke it is another
One side is circumferentially evenly equipped with several and is provided with the side of magnetizing for reducing the weight loss groove of motor self weight, fan-shaped magnet described in every group
To orthogonal first fan-shaped magnet and the second fan-shaped magnet.
2. a kind of hub motor based on magnetism-collected structure rotor axial magnetic field according to claim 1, it is characterised in that: institute
Stating weight loss groove is along the radial recessed scalloped recess of the rotor yoke.
3. a kind of hub motor based on magnetism-collected structure rotor axial magnetic field according to claim 1, it is characterised in that: institute
The arc length for stating the first fan-shaped magnet is greater than the arc length of second fan-shaped magnet.
4. a kind of hub motor based on magnetism-collected structure rotor axial magnetic field according to claim 1, it is characterised in that: by
Fan-shaped magnet described in several groups encloses set made of hub bearing is fastened in pit, the hub bearing and the main axis connect
It connects.
5. a kind of hub motor based on magnetism-collected structure rotor axial magnetic field according to claim 1, it is characterised in that: institute
It states rotor yoke and is evenly equipped with the side of the fan-shaped magnet and be arranged towards the stator module.
6. a kind of hub motor based on magnetism-collected structure rotor axial magnetic field according to claim 1, it is characterised in that: institute
The edge circumferential direction extension for stating rotor case has flange, and the edge of the flange and the rotor yoke is fixed by screw.
7. a kind of hub motor based on magnetism-collected structure rotor axial magnetic field according to claim 1, it is characterised in that: institute
Stating stator module includes stator support, and the enameled wire of winding and the stator support.
8. a kind of hub motor based on magnetism-collected structure rotor axial magnetic field according to claim 7, it is characterised in that: institute
It states and is equipped with the main shaft in the middle part of stator support, the main shaft and the stator support fasten.
9. a kind of hub motor based on magnetism-collected structure rotor axial magnetic field according to claim 1, it is characterised in that: institute
The one side for stating rotor yoke is integrally recessed with annular groove, and the fan-shaped magnet is accommodated in the annular groove.
10. a kind of hub motor based on magnetism-collected structure rotor axial magnetic field according to claim 4, it is characterised in that:
The hub bearing is provided with velocity location sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920307871.6U CN209358316U (en) | 2019-03-12 | 2019-03-12 | A kind of hub motor based on magnetism-collected structure rotor axial magnetic field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920307871.6U CN209358316U (en) | 2019-03-12 | 2019-03-12 | A kind of hub motor based on magnetism-collected structure rotor axial magnetic field |
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| Publication Number | Publication Date |
|---|---|
| CN209358316U true CN209358316U (en) | 2019-09-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920307871.6U Active CN209358316U (en) | 2019-03-12 | 2019-03-12 | A kind of hub motor based on magnetism-collected structure rotor axial magnetic field |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109768646A (en) * | 2019-03-12 | 2019-05-17 | 清华大学苏州汽车研究院（吴江） | A kind of hub motor based on magnetism-collected structure rotor axial magnetic field |
| CN115001172A (en) * | 2022-07-21 | 2022-09-02 | 南京理工大学 | Axial-magnetizing permanent magnet motor rotor structure and permanent magnet motor |
-
2019
- 2019-03-12 CN CN201920307871.6U patent/CN209358316U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109768646A (en) * | 2019-03-12 | 2019-05-17 | 清华大学苏州汽车研究院（吴江） | A kind of hub motor based on magnetism-collected structure rotor axial magnetic field |
| CN109768646B (en) * | 2019-03-12 | 2024-03-19 | 清华大学苏州汽车研究院（吴江） | Hub motor based on magnetic focusing structure rotor axial magnetic field |
| CN115001172A (en) * | 2022-07-21 | 2022-09-02 | 南京理工大学 | Axial-magnetizing permanent magnet motor rotor structure and permanent magnet motor |
| CN115001172B (en) * | 2022-07-21 | 2023-08-04 | 南京理工大学 | Axial magnetizing permanent magnet motor rotor structure and permanent magnet motor |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20221024 Address after: 215200 Building 2, Tsinghua Automobile Industrial Park, 139 Lianyang Road, Wujiang Development Zone, Suzhou City, Jiangsu Province Patentee after: TSINGHUA University SUZHOU AUTOMOTIVE RESEARCH INSTITUTE(WUJIANG) Patentee after: TSINGHUA University Address before: 215200 Building 2, Tsinghua Automobile Industrial Park, 139 Lianyang Road, Wujiang Development Zone, Suzhou City, Jiangsu Province Patentee before: TSINGHUA University SUZHOU AUTOMOTIVE RESEARCH INSTITUTE(WUJIANG) |