CN208548768U - A kind of novel hub motor rotor construction - Google Patents
A kind of novel hub motor rotor construction Download PDFInfo
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- CN208548768U CN208548768U CN201821141924.3U CN201821141924U CN208548768U CN 208548768 U CN208548768 U CN 208548768U CN 201821141924 U CN201821141924 U CN 201821141924U CN 208548768 U CN208548768 U CN 208548768U
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- rotor
- rectangle groove
- groove body
- hub motor
- slot
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
A kind of novel hub motor rotor construction, belong to hub motor manufacturing technology field, the end face of rotor body is equipped with several magnetic slots, magnetic slot is evenly distributed on the excircle of shaft hole, magnetic slot is superimposed the convex trough body structure constituted by upper rectangle groove body and lower rectangle groove body, it is connected between upper rectangle groove body and lower rectangle groove body by circular arc chamfering transition, the outer surface of rotor body is laid with several V-shape slots.The gap section of the utility model structure novel, magnetic slot is conducive to the circulation of air, can improve the heat-sinking capability of stator, and circular arc chamfering processing can prevent permanent magnet and heading joint contact there is a situation where stress it is excessive；V-shape slot can locally increase the air gap between stator and rotor, reduce induction reactance, keep operating reliable, improve starting characteristic.Compared with traditional rotor structure, the utility model improves starting characteristic, reduces loss, solves the problems, such as permanent magnet temperature rise.
Description
Technical field
The utility model belongs to hub motor manufacturing technology field, is related to a kind of rotor structure of hub motor, specifically
Say it is to be related to a kind of hub motor rotor structure for improving hub motor efficiency, improving heat dissipation performance.
Background technique
Hub motor is exactly that motor is arranged in the hub in simple terms, is an important directions of Development of Electric Vehicles.
In the design process of hub motor, the problem of temperature rise of motor is to influence the main problem of electric machine operation state.If in motor
The temperature rise in portion is excessively high, can largely reduce the service life of motor insulation material, and the destruction of insulating materials then means motor
It scraps；For magneto, once temperature rise is excessively high, irreversible demagnetization phenomenon, the phenomenon can occur for permanent magnet material
Mean that motor is scrapped.
Currently, traditional internal rotor hub motor rotor outer edge be it is circular, magnetic slot is rectangle, this structure
Rotor has the disadvantage that the gap between internal rotor and external stator is too small in the application can generate static friction, increase loss,
Starting characteristic is deteriorated；Gap super-high-current increases, and fever increases, and electric efficiency reduces, and traditional magnet steel slot structure makes motor exist
In operational process, permanent magnetism temperature is increased, and can not be radiated well.
Utility model content
The purpose of this utility model is to generate static friction for the gap between internal rotor and external stator is too small, makes to be lost
Increase, starting characteristic is deteriorated；Gap super-high-current increases, and fever increases, and electric efficiency reduces, and traditional magnet steel slot structure is easy
Permanent magnetism temperature is increased, the deficiencies of heat dissipation performance is poor, proposes a kind of novel hub motor rotor construction, passes through and changes rotor knot
Structure can effectively solve the problems, such as above-mentioned technology.
The technical solution of the utility model is: a kind of novel hub motor rotor construction, including rotor body, and setting is turning
The shaft hole of sub- body central；It is characterized by: the end face of the rotor body is equipped with several magnetic slots, the magnetic slot
It is evenly distributed on the excircle of shaft hole, the magnetic slot is superimposed the convex constituted by upper rectangle groove body and lower rectangle groove body
Trough body structure is connected between the upper rectangle groove body and lower rectangle groove body by circular arc chamfering transition, outside the rotor body
Surface is laid with several V-shape slots.
The length of the upper rectangle groove body is less than the length of lower rectangle groove body.
The magnetic slot is connect with permanent magnet by interference fit.
The V-shape slot is uniformly arranged on the outer surface of rotor body, and the opening angle of V-shape slot is 60~90 °.
The magnetic slot is center annular array on the end face of rotor body using the axle center of rotor body, two neighboring magnetic
V-arrangement angle is formed between steel tank.
The utility model has the following beneficial effects: a kind of novel hub motor rotor construction provided by the utility model, rotor
The end face of ontology is equipped with several magnetic slots, and magnetic slot is evenly distributed on the excircle of shaft hole, and magnetic slot is by upper rectangle
The convex trough body structure that groove body and the superposition of lower rectangle groove body are constituted, is fallen between upper rectangle groove body and lower rectangle groove body by circular arc
Angle transition connection, the outer surface of rotor body are laid with several V-shape slots, and structure novel matches permanent magnet by interference
Attach together in the rotor, the gap section of magnetic slot is conducive to the circulation of air, the heat-sinking capability of stator can be improved, when motor plus
Speed, when all standing, permanent magnet is in semi-free state, has small offset and vibration, and circular arc chamfering processing can be prevented
It is excessive that only there is a situation where stress permanent magnet and heading joint contact；It is uniform that V-shape slot energy is set at the yoke portion edge of rotor
Part increases the air gap between stator and rotor, reduces induction reactance, keeps operating reliable, improves starting characteristic.With traditional rotor knot
Structure is compared, and the utility model improves starting characteristic, reduces loss, solves the problems, such as permanent magnet temperature rise.
Detailed description of the invention
Fig. 1 is rotor body ends structural schematic diagram in the utility model.
Partial enlargement structural representation in Fig. 2 Fig. 1 at A.
Fig. 3 is the utility model rotor overall structure diagram.
In figure: rotor body 1, magnetic slot 2, upper rectangle groove body 2-1, lower rectangle groove body 2-2, circular arc chamfering 2-3, V-shape
Slot 3, shaft hole 4.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing:
As shown in Figure 1-3, a kind of novel hub motor rotor construction, including rotor body 1, it is arranged in rotor body 1
The shaft hole 4 of the heart；The end face of rotor body 1 is equipped with several magnetic slots 2, and magnetic slot 2 is evenly distributed on the outer circle of shaft hole 4
Zhou Shang, the magnetic slot 2 are superimposed the convex trough body structure constituted by upper rectangle groove body 2-1 and lower rectangle groove body 2-2, it is described on
It is connected between rectangle groove body 2-1 and lower rectangle groove body 2-2 by circular arc chamfering 2-3 transition, the outer surface of the rotor body 1 is equal
It is laid with several V-shape slots 3.
As shown in Figure 1-3, a kind of novel hub motor rotor construction, the length of upper rectangle groove body 2-1 is less than lower rectangular channel
The length of body 2-2；Magnetic slot 2 is connect with permanent magnet by interference fit；V-shape slot 3 is uniformly arranged on rotor body 1
On outer surface, the opening angle of V-shape slot 3 is 60~90 °；Magnetic slot 2 exists by center annular array of the axle center of rotor body 1
On the end face of rotor body 1, V-arrangement angle is formed between two neighboring magnetic slot 2.
As shown in Figure 1-3, a kind of working principle of novel hub motor rotor construction is as follows: permanent magnet is matched by interference
Attach together in the rotor, the gap section of magnetic slot is conducive to the circulation of air, the heat-sinking capability of stator can be improved, when motor plus
Speed, when all standing, permanent magnet is in semi-free state, has small offset and vibration, and circular arc chamfering processing can be prevented
It is excessive that only there is a situation where stress permanent magnet and heading joint contact；It is uniform that V-shape slot energy is set at the yoke portion edge of rotor
Part increases the air gap between stator and rotor, reduces induction reactance, keeps operating reliable, improves starting characteristic.With traditional rotor knot
Structure is compared, and the utility model improves starting characteristic, reduces loss, solves the problems, such as permanent magnet temperature rise.
Claims (5)
1. the shaft hole at rotor body (1) center is arranged in a kind of novel hub motor rotor construction, including rotor body (1)
(4)；It is characterized by: the end face of the rotor body (1) is equipped with several magnetic slots (2), the magnetic slot (2) is uniformly divided
For cloth on the excircle of shaft hole (4), the magnetic slot (2) is superimposed structure by upper rectangle groove body (2-1) and lower rectangle groove body (2-2)
At convex trough body structure, between the upper rectangle groove body (2-1) and lower rectangle groove body (2-2) pass through circular arc chamfering (2-3)
Transition connection, the outer surface of the rotor body (1) is laid with several V-shape slots (3).
2. a kind of novel hub motor rotor construction according to claim 1, it is characterised in that: the upper rectangle groove body
The length of (2-1) is less than the length of lower rectangle groove body (2-2).
3. a kind of novel hub motor rotor construction according to claim 1, it is characterised in that: the magnetic slot (2) with
Permanent magnet is connected by interference fit.
4. a kind of novel hub motor rotor construction according to claim 1, it is characterised in that: the V-shape slot (3) is equal
Even to be arranged on the outer surface of rotor body (1), the opening angle of V-shape slot (3) is 60~90 °.
5. a kind of novel hub motor rotor construction according to claim 1, it is characterised in that: the magnetic slot (2) with
The axle center of rotor body (1) is center annular array on the end face of rotor body (1), shape between two neighboring magnetic slot (2)
Forming V-shape angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821141924.3U CN208548768U (en) | 2018-07-19 | 2018-07-19 | A kind of novel hub motor rotor construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821141924.3U CN208548768U (en) | 2018-07-19 | 2018-07-19 | A kind of novel hub motor rotor construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208548768U true CN208548768U (en) | 2019-02-26 |
Family
ID=65424887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821141924.3U Active CN208548768U (en) | 2018-07-19 | 2018-07-19 | A kind of novel hub motor rotor construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208548768U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116169808A (en) * | 2023-04-26 | 2023-05-26 | 四川芯智热控技术有限公司 | Motor magnet fixing structure and motor magnet fixing method |
-
2018
- 2018-07-19 CN CN201821141924.3U patent/CN208548768U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116169808A (en) * | 2023-04-26 | 2023-05-26 | 四川芯智热控技术有限公司 | Motor magnet fixing structure and motor magnet fixing method |
| CN116169808B (en) * | 2023-04-26 | 2023-07-04 | 四川芯智热控技术有限公司 | Motor magnet fixing structure and motor magnet fixing method |
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