CN107379884B - Breathing heat dissipation structure of hub motor - Google Patents
Breathing heat dissipation structure of hub motor Download PDFInfo
- Publication number
- CN107379884B CN107379884B CN201710471685.1A CN201710471685A CN107379884B CN 107379884 B CN107379884 B CN 107379884B CN 201710471685 A CN201710471685 A CN 201710471685A CN 107379884 B CN107379884 B CN 107379884B
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- China
- Prior art keywords
- hub
- waterproof
- breathing
- breathable film
- motor
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B27/00—Hubs
- B60B27/0015—Hubs for driven wheels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B27/00—Hubs
- B60B27/0047—Hubs characterised by functional integration of other elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B2900/00—Purpose of invention
- B60B2900/10—Reduction of
- B60B2900/111—Weight
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B2900/00—Purpose of invention
- B60B2900/30—Increase in
- B60B2900/321—Lifetime
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B2900/00—Purpose of invention
- B60B2900/50—Improvement of
- B60B2900/511—Sealing
- B60B2900/5114—Sealing against humidity or water
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B2900/00—Purpose of invention
- B60B2900/50—Improvement of
- B60B2900/513—Cooling, e.g. of brakes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The invention provides a breathing heat dissipation structure of a hub motor, which comprises a hub and a waterproof and breathable film assembly; the hub is provided with a breathing hole and a protruding part; the waterproof and breathable membrane component is arranged inside, outside or in the breathing hole of the hub; the waterproof breathable film component covers the radial cross section of the breathing hole; the protruding part is arranged on the outer side surface of the hub; the protruding part comprises a diversion protrusion; the flow guiding bulge corresponds to the breathing hole. According to the invention, the diversion protrusions are arranged on the outer surface of the hub, so that when the hub rotates skillfully, pressure difference is formed at the breathing holes at two sides, hot air in the hub is driven to flow out, the performance of the hub motor can be furthest exerted, and in addition, the components in the breathing holes can be protected.
Description
Technical Field
The invention relates to the field of electric vehicle accessories, in particular to a breathing heat dissipation structure of an in-wheel motor.
Background
In the prior art, the hub motor of the electric vehicle is used outdoors, so that the waterproof requirement is high, and the motor is required to normally run under the condition of soaking. This requires the motor to be completely sealed. But the motor can generate heat when using, will make the inside air expansion of motor after generating heat, and when inflation pressure reaches certain degree, the air then can spill over from rubber seal etc. and wait that the motor is stopped using, and whole motor cooling down, the inside negative pressure that then produces of motor, outside air can get into the motor inside again, if outside is the moist environment, or soaks, can inhale inside the motor with water, causes insulation resistance to reduce, even short circuit motor damages. In addition, the motor is sealed, no air flows between the inside and the outside, and heat in the motor can only exchange heat with the outside through the motor shell. Therefore, the heat dissipation is slower, and the motor is not beneficial to exerting the optimal performance and the extreme performance.
Patent document CN105610254a discloses an oil-cooled hub motor. The stator is provided with an oil inlet and an oil outlet, a bent oil channel through which cooling oil passes is formed between the stator and the rotor, and a coil iron core of the stator and rotor magnetic steel are cooled. According to the patent document, the heating part of the motor is completely surrounded by the oil channel through which the cooling oil with the bending structure passes, so that the running temperature inside the motor is effectively reduced, the bearing with motion friction can be lubricated to a certain extent, the electric efficiency of the motor is improved, the service life of the bearing is prolonged, the insulation level inside the motor is increased, and the motor has the characteristics of extremely good heat dissipation effect. However, the oil-cooled hub motor provided in this patent document is complicated in structure, high in manufacturing cost, and very difficult to maintain if damage occurs.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a breathing heat dissipation structure of an in-wheel motor.
The invention provides a breathing heat dissipation structure of a hub motor, which comprises a hub and a waterproof and breathable film assembly;
the hub is provided with a breathing hole and a protruding part;
the waterproof and breathable membrane component is arranged inside, outside or in the breathing hole of the hub; the waterproof breathable film component covers the radial cross section of the breathing hole;
the protruding part is arranged on the outer side surface of the hub;
the protruding part comprises a diversion protrusion; the flow guiding bulge corresponds to the breathing hole.
Preferably, the guide projection comprises a first guide side surface and a second guide side surface;
the first diversion side surface and the second diversion side surface are oppositely arranged along the circumferential direction of the hub;
the first diversion side surface comprises a straight surface; the straight surface is perpendicular to the outer side surface of the hub;
the second diversion side surface comprises an inclined surface; the inclined plane extends along the length direction and is connected with the outer side surface of the hub, and an included angle between the inclined plane and the outer side surface of the hub is an obtuse angle;
the breathing hole is positioned on the side of the first diversion side surface.
Preferably, the deflector protrusion comprises a deflector extension;
the flow guiding extension extends according to the following path:
along the axial direction of the hub, away from the hub surface;
along the circumferential direction of the hub, towards the side where the breathing holes are located.
Preferably, the guide protrusions form an inlet guide protrusion and an outlet guide protrusion;
when the hub rotates circumferentially, the first side surface of the air inlet guide bulge is a windward surface; the second side of the air outlet guide bulge is a windward side.
Preferably, the inlet guide projection and the outlet guide projection are respectively positioned on two different sides of the hub.
Preferably, there are a plurality of breathing holes;
the plurality of breathing holes are distributed on two sides of the hub.
Preferably, there are a plurality of waterproof breathable membrane assemblies; and the waterproof breathable film assemblies correspond to the breathing holes.
Preferably, the waterproof and breathable film assembly comprises a waterproof and breathable film and an externally threaded sleeve;
the waterproof breathable film is arranged in the externally threaded sleeve; the external thread sleeve is in threaded connection with the breathing hole.
Preferably, the waterproof breathable membrane assembly comprises a waterproof breathable membrane; the waterproof breathable film is arc-shaped or annular;
the waterproof breathable film is arranged inside the hub;
a waterproof breathable film covers a plurality of breathing holes simultaneously.
Preferably, the convex part further comprises a heat dissipation convex;
there are a plurality of heat radiation protrusions distributed on the hub outer side surface in the hub circumferential direction.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the diversion protrusions are arranged on the outer surface of the hub, so that when the hub rotates skillfully, pressure difference is formed at the breathing holes at two sides to drive hot air in the hub to flow out, the performance of the hub motor can be exerted to the maximum extent, and in addition, the components in the breathing holes can be protected, so that two purposes are achieved;
2. the waterproof breathable film is arranged in the invention, so that the motor is prevented from being damaged by thermal expansion and water is prevented from being sucked into the motor under negative pressure while the ventilation of the inside of the hub is ensured, and the waterproof breathable film is made of a pollution-free self-cleaning material and has the characteristics of non-sticking and is easy to clean;
3. the invention solves the pressure difference between the inside and the outside of the motor by utilizing the breathing structure, so that the pressure difference is balanced, and the weight of the hub is reduced on the premise of not affecting the strength and the bearing.
4. The detachable waterproof and breathable film assembly is adopted, so that the waterproof and breathable film can be cleaned and replaced, the heat dissipation efficiency of the hub motor is guaranteed, and the service life of the hub motor is prolonged;
5. the heat dissipation bulges are further arranged on the outer surface of the outline, so that the heat exchange area between the heat dissipation bulges and air is increased, and the heat dissipation effect is enhanced.
Drawings
Other features, objects and advantages of the present invention will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of a waterproof and breathable membrane assembly and hub mounting structure comprising a waterproof and breathable membrane and an externally threaded sleeve;
FIG. 3 is a schematic view of the placement of the boss on the hub.
The figure shows:
Breathing hole 11 waterproof breathable film component 2
Waterproof and breathable film 21 of diversion bump 12
First flow guiding side 1201 externally threaded sleeve 22
Second flow guiding side 1202
Air outlet guide projection 122
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present invention.
As shown in fig. 1 and fig. 3, in the embodiment, the breathing heat dissipation structure of the motor of the hub 1 provided by the invention comprises the hub 1 and the waterproof and breathable membrane assembly 2, wherein the hub 1 is provided with a breathing hole 11 and a bulge, the bulge comprises a diversion bulge 12, the waterproof and breathable membrane assembly 2 is arranged in the hub 1 and covers the radial cross section of the breathing hole 11 so as to ensure that a waterproof airtight space is formed in the hub 1. The water conservancy diversion arch 12 sets up at wheel hub 1 surface to with breathing hole 11 one-to-one, the water conservancy diversion arch 12 contains first water conservancy diversion side 1201 and second water conservancy diversion side 1202, along wheel hub 1 circumference direction, first water conservancy diversion side 1201 and the relative setting of second water conservancy diversion side 1202, first water conservancy diversion side 1201 contains the straight face, and the straight face is perpendicular with wheel hub 1 lateral surface, second water conservancy diversion side 1202 contains the inclined plane, and the inclined plane extends along length direction and links to each other with wheel hub 1 lateral surface, and the contained angle is the obtuse angle between inclined plane and the wheel hub 1 lateral surface, and breathing hole 11 is located the side of first water conservancy diversion side 1201. The deflector protrusion 12 further comprises a deflector extension 1203, said deflector extension 1203 extending according to the following path: along the axial direction of the hub 1, away from the surface of the hub 1; in the circumferential direction of the hub 1, towards the side of the breathing holes 11. The air guiding extension 1203 covers the breathing hole 11 on the axial projection of the hub 1, so that the air guiding protrusion 12 has an air guiding function, and can prevent the breathing hole from being directly exposed to the outside, thereby causing the waterproof and breathable membrane assembly 2 to be damaged by stones or people on the road. According to the installation direction on the hub 1, the guiding protrusions 12 may be classified into the air inlet guiding protrusions 121 and the air outlet guiding protrusions 122, and the air inlet guiding protrusions 121 and the air outlet guiding protrusions 122 are identical in shape and structure, and are distinguished as follows: when the hub 1 rotates circumferentially, the first side surface of the air inlet guide protrusion 121 is a windward surface; the second side of the air outlet guide protrusion 122 is a windward side.
In the embodiment, a plurality of breathing holes 11 are oppositely arranged on the first hub side and the second hub side, the breathing holes 11 on the first hub side are correspondingly provided with air inlet guide protrusions 121, and the breathing holes 11 on the second hub side are correspondingly provided with air outlet guide protrusions 122, so that air flow in the hub 1 has good directivity, and heat in the hub 1 is easily taken out. In the preferred embodiment, the air inlet guide protrusions 121 and the air outlet guide protrusions 122 are alternately arranged on the circumferential directions of the two side surfaces of the hub 1, so that the structure has the advantages of being capable of well avoiding that the hub 1 deflects to a certain axial direction due to axial air flow in the rotating process of the hub 1, and further increasing the abrasion of parts in the axial direction, but has obvious defects, namely, the air flow in the hub 1 is disordered, heat is not easy to take away in time, and the structure is suitable for occasions with fewer breathing holes 11.
As shown in fig. 1, in the embodiment, the waterproof and breathable membrane assembly 2 is located inside the hub 1, each breathing hole 11 corresponds to one waterproof and breathable membrane assembly 2, and the structure has the advantages of compactness and stability, that is, the single waterproof and breathable membrane assembly 2 is smaller, waterproof sealing of the breathing holes 11 is easy to achieve, and the waterproof and breathable membrane assembly 2 is located inside the hub 1, so that loosening and even falling off caused by friction or collision of the hub 1 can be avoided. Of course, preferably, the waterproof and breathable membrane assembly 2 used in the hub 1 can further comprise an annular waterproof and breathable membrane 21, all breathing holes 11 on one side of the hub 1 are covered once, the complicated step of installing the waterproof and breathable membrane assemblies 2 one by one is omitted, but the difficulty of guaranteeing waterproof sealing at each breathing hole 11 is increased due to the increase of the area of the waterproof and breathable membrane 21, and the arc waterproof and breathable membrane 21 can be used relatively, and the breathing holes 11 on one side of the hubs 1 are covered once, so that the waterproof sealing difficulty is reduced. The prior art already has a waterproof breathable film 21 made of a non-fouling self-cleaning material, which has non-stick property and is easy to clean. As shown in fig. 2, in a preferred embodiment, the waterproof and breathable membrane assembly 2 comprises a waterproof and breathable membrane 21 and an externally threaded sleeve 22, the waterproof and breathable membrane 21 is mounted in the externally threaded sleeve 22, the externally threaded sleeve 22 is in threaded connection with the breathing hole 11, the structure enables the waterproof and breathable membrane assembly 2 to be detachably assembled on the hub 1, when the waterproof and breathable membrane assembly 2 is broken, the waterproof and breathable membrane assembly 2 is easy to detach and replace, and further, a waterproof adhesive tape is preferably added to threads, so that even if a thread structure has a tiny defect, water can be well prevented from entering the hub 1. Preferably, the waterproof and breathable membrane assembly 2 can also be arranged outside the hub 1, for example, clamped in the guide protrusions 12, the assembly is very simple, but this structure has the disadvantage that the waterproof and breathable membrane assembly 2 is susceptible to scraping wear and the efficiency of the air flow into the hub 1 is also reduced. As shown in fig. 3, in a preferred embodiment, the above-mentioned protruding portion further includes a heat dissipating protrusion 13; there are a plurality of heat dissipation protrusions 13 distributed on the outer side surface of the hub 1 along the circumferential direction of the hub 1 to increase the heat convection area between the outer side surface of the hub 1 and the air, enhancing the heat dissipation effect.
Working principle: when the hub 1 rotates along the circumferential direction, the windward side of the air inlet guide protrusion 121 is a first guide side 1201, the first guide side 1201 comprises a vertical plane, the speed of the air flow is reduced, the pressure is increased, and the air flow enters the hub 1 from the breathing hole 11 corresponding to the air inlet guide protrusion 121. The windward side of the air outlet guide protrusion 122 is a second guide side 1202, and the inclined surface of the second guide side 1202 is located in a high-speed air flow area, opposite to the first guide side 1201 of the air outlet guide protrusion 122, and the breathing holes 11 corresponding to the air outlet guide protrusion 122 generate negative pressure, so that air flows out from the hub 1. The heat generated by the motor is carried out by the inflow and outflow of the air flow in the hub 1, so that the motor performance can be exerted to the maximum extent; in addition, the waterproof breathable film 21 is arranged at the breathing hole 11, so that the problem of water inflow caused by air pressure difference inside and outside the motor due to heat expansion and cold contraction of air inside the motor is avoided.
The foregoing describes specific embodiments of the present invention. It is to be understood that the invention is not limited to the particular embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the claims without affecting the spirit of the invention. The embodiments of the present application and features in the embodiments may be combined with each other arbitrarily without conflict.
Claims (10)
1. The breathing heat dissipation structure of the hub motor is characterized by comprising a hub and a waterproof and breathable film assembly;
the hub is provided with a breathing hole and a protruding part;
the waterproof and breathable membrane component is arranged inside, outside or in the breathing hole of the hub; the waterproof breathable film component covers the radial cross section of the breathing hole;
the protruding part is arranged on the outer side surface of the hub;
the protruding part comprises a diversion protrusion; the flow guiding bulge corresponds to the breathing hole.
2. The in-wheel motor respiration heat radiation structure according to claim 1, wherein the guide projection comprises a first guide side surface and a second guide side surface;
the first diversion side surface and the second diversion side surface are oppositely arranged along the circumferential direction of the hub;
the first diversion side surface comprises a straight surface; the straight surface is perpendicular to the outer side surface of the hub;
the second diversion side surface comprises an inclined surface; the inclined plane extends along the length direction and is connected with the outer side surface of the hub, and an included angle between the inclined plane and the outer side surface of the hub is an obtuse angle;
the breathing hole is positioned on the side of the first diversion side surface.
3. The in-wheel motor respiratory heat dissipating structure of claim 2, wherein the deflector protrusion comprises a deflector extension;
the flow guiding extension extends according to the following path:
along the axial direction of the hub, away from the hub surface;
along the circumferential direction of the hub, towards the side where the breathing holes are located.
4. The in-wheel motor respiration heat radiation structure according to claim 2, wherein the guide projection forms an intake guide projection and an outlet guide projection;
when the hub rotates circumferentially, the first side surface of the air inlet guide bulge is a windward surface; the second side of the air outlet guide bulge is a windward side.
5. The hub motor respiratory heat dissipation structure according to claim 4, wherein the inlet guide projection and the outlet guide projection are respectively located on two different sides of the hub.
6. The in-wheel motor breathing heat dissipating structure of claim 1, wherein there are a plurality of breathing holes;
the plurality of breathing holes are distributed on two sides of the hub.
7. The in-wheel motor respiratory heat dissipating structure of claim 6, wherein there are a plurality of waterproof breathable membrane assemblies; and the waterproof breathable film assemblies correspond to the breathing holes.
8. The in-wheel motor respiratory heat dissipation structure according to claim 7, wherein the waterproof and breathable film assembly comprises a waterproof and breathable film and an externally threaded sleeve;
the waterproof breathable film is arranged in the externally threaded sleeve; the external thread sleeve is in threaded connection with the breathing hole.
9. The in-wheel motor respiratory heat dissipation structure according to claim 6, wherein the waterproof and breathable film assembly comprises a waterproof and breathable film; the waterproof breathable film is arc-shaped or annular;
the waterproof breathable film is arranged inside the hub;
a waterproof breathable film covers a plurality of breathing holes simultaneously.
10. The in-wheel motor respiration heat radiation structure according to claim 1, characterized in that the boss further comprises a heat radiation boss;
there are a plurality of heat radiation protrusions distributed on the hub outer side surface in the hub circumferential direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710471685.1A CN107379884B (en) | 2017-06-20 | 2017-06-20 | Breathing heat dissipation structure of hub motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710471685.1A CN107379884B (en) | 2017-06-20 | 2017-06-20 | Breathing heat dissipation structure of hub motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107379884A CN107379884A (en) | 2017-11-24 |
| CN107379884B true CN107379884B (en) | 2023-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710471685.1A Active CN107379884B (en) | 2017-06-20 | 2017-06-20 | Breathing heat dissipation structure of hub motor |
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| Country | Link |
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| CN (1) | CN107379884B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110311500B (en) * | 2019-07-26 | 2021-01-05 | 中智电气南京有限公司 | Waterproof type new energy automobile motor based on stable output |
| CN112319132B (en) * | 2020-11-25 | 2022-05-24 | 浙江博鑫涵汽车零部件有限公司 | Novel automobile wheel hub subassembly |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105515227A (en) * | 2015-12-28 | 2016-04-20 | 华南理工大学 | Device for enhancing heat-dissipating performance of hub motor |
| CN207000037U (en) * | 2017-06-20 | 2018-02-13 | 新安乃达驱动技术（上海）股份有限公司 | Wheel hub motor respiration heat-radiation structure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI263735B (en) * | 2004-07-16 | 2006-10-11 | Delta Electronics Inc | Heat-dissipating device |
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2017
- 2017-06-20 CN CN201710471685.1A patent/CN107379884B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105515227A (en) * | 2015-12-28 | 2016-04-20 | 华南理工大学 | Device for enhancing heat-dissipating performance of hub motor |
| CN207000037U (en) * | 2017-06-20 | 2018-02-13 | 新安乃达驱动技术（上海）股份有限公司 | Wheel hub motor respiration heat-radiation structure |
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| CN107379884A (en) | 2017-11-24 |
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