CN111262360B - Labyrinth dynamic seal outer rotor hub motor driving device - Google Patents
Labyrinth dynamic seal outer rotor hub motor driving device Download PDFInfo
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- CN111262360B CN111262360B CN202010068862.3A CN202010068862A CN111262360B CN 111262360 B CN111262360 B CN 111262360B CN 202010068862 A CN202010068862 A CN 202010068862A CN 111262360 B CN111262360 B CN 111262360B
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- rotor
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- labyrinth
- dynamic seal
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- 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
- H02K1/2786—Outer rotors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K7/00—Disposition of motor in, or adjacent to, traction wheel
- B60K7/0007—Disposition of motor in, or adjacent to, traction wheel the motor being electric
-
- 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
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/165—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields radially supporting the rotor around a fixed spindle; radially supporting the rotor directly
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The invention relates to a labyrinth dynamic seal outer rotor hub motor driving device, which comprises a wire harness cooling water pipe, a dynamic seal labyrinth seal ring, an outer rotor assembly, a tire assembly, an inner stator assembly and a knuckle flange, wherein the outer rotor assembly, the tire assembly, the inner stator assembly and the knuckle flange are coaxially arranged, the inner stator assembly is arranged in the outer rotor assembly, the knuckle flange is of a hollow structure, penetrates through the outer rotor assembly and is fixedly connected with the inner stator assembly, the dynamic seal labyrinth seal ring is arranged between the knuckle flange and the outer rotor assembly, the wire harness cooling water pipe is connected with the inner stator assembly through the knuckle flange, and the outer rotor assembly is fixedly connected with the tire assembly to drive a tire to rotate.
Description
Technical Field
The invention relates to the field of hub motor driving of electric automobiles, in particular to a labyrinth dynamic seal outer rotor hub motor driving device.
Background
Compared with the traditional automobile, the electric automobile has the advantages of energy conservation and environmental protection, so that the electric automobile becomes the mainstream of future development in the automobile field. The electric automobile can be divided into a centralized driving type and a distributed wheel-side driving type according to the structural form of a power assembly, and the distributed wheel-side driving electric automobile is mainly structurally characterized in that a driving motor is directly installed in or near a driving wheel, and has the outstanding advantages of short driving transmission chain, high efficiency, compactness and the like. The hub motor driving system is mainly divided into two types according to the rotor type of the motor: an inner rotor type and an outer rotor type. The outer rotor type motor is a low-speed rotor motor, a speed reduction device is not needed usually, and the rotating speed of wheels is the same as that of the motor.
The wheel hub motor technology has the biggest characteristic that power, transmission and braking devices are integrated into a wheel hub, and the mechanical part of an electric vehicle is greatly simplified. Due to the limitation of structure and space, the integrated design of wheel end components such as a brake, a steering knuckle, a rim and the like and the hub motor brings difficulty to the design of the hub motor. In addition, the working environment of the hub motor is severe, and the sealing requirement is high.
Chinese patent CN201820660635.8 discloses an external rotor in-wheel motor electric automobile drive braking integrated device, this patent is through installing the sealed dustproof stopper of drive in motor shaft and motor drive end cover contact department, plays sealed dustproof waterproof effect, but this patent has only used a sealing plug, can't play better sealed effect, and the device's structure inlet wire difficulty simultaneously, and do not consider the cooling problem, the pencil of being not convenient for is arranged and is dispelled the heat. Chinese patent CN201910156189.6 discloses an in-wheel motor for an electric vehicle, which considers the cooling problem, but the dynamic seal position between the stator and the rotor of the device is close to the outer side of the rim, so that the friction resistance can be relatively large.
Therefore, how to integrate electronic components, a cooling system and wiring harness arrangement in a limited space through improvement of an internal structure and ensure good dynamic sealing between components of the motor rotating at a high speed is a technical bottleneck in the design of the external rotor hub motor at present.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a labyrinth dynamic seal outer rotor hub motor driving device which can ensure heat dissipation and good dynamic seal.
The purpose of the invention can be realized by the following technical scheme:
a labyrinth dynamic seal outer rotor hub motor driving device comprises a wire harness cooling water pipe, a dynamic seal labyrinth seal ring, an outer rotor assembly, a tire assembly, an inner stator assembly and a knuckle flange which are coaxially arranged, wherein the inner stator assembly is arranged in the outer rotor assembly, the knuckle flange is of a hollow structure and penetrates through the outer rotor assembly and is fixedly connected with the inner stator assembly, the dynamic seal labyrinth seal ring is arranged between the knuckle flange and the outer rotor assembly, the wire harness cooling water pipe is connected with the inner stator assembly through the knuckle flange, and the outer rotor assembly is fixedly connected with the tire assembly to drive a tire to rotate.
Furthermore, the knuckle flange comprises a first cylinder and a second cylinder which are connected with each other, the diameter of the first cylinder is smaller than that of the second cylinder, the outer side wall of the first cylinder is fixedly connected with the inner stator assembly, the second cylinder penetrates through the outer rotor assembly, and the dynamic seal labyrinth seal ring is arranged between the outer side wall of the second cylinder and the outer rotor assembly.
Furthermore, the dynamic seal labyrinth seal ring is an axial labyrinth seal structure.
Furthermore, the outer rotor assembly comprises a rotor shell, a rotor cover plate and a permanent magnet, wherein the rotor shell and the rotor cover plate are mutually connected to form a cavity, the permanent magnet is attached to the inner side of the rotor shell, the rotor shell is basin-shaped, the rotor cover plate comprises a central cylinder and a circular cover plate which are mutually perpendicular, the inner edge of the circular cover plate is fixedly connected with the side wall of the central cylinder, the outer edge of the circular cover plate is fixedly connected with the rotor shell, a sealing groove is formed in the inner side wall of the central cylinder, the second cylinder is sleeved in the central cylinder, and the dynamic sealing labyrinth sealing ring is arranged in the sealing groove.
Further, the inner stator assembly comprises a stator support, a winding, an electronic element and a water cooling jacket, the stator support comprises a mounting portion and a connecting portion which are connected with each other, the connecting portion is fixedly connected with the outer side wall of the first cylinder, the winding, the electronic element and the water cooling jacket are respectively and fixedly mounted on the mounting portion, the winding is matched with the permanent magnet in position and generates an alternating magnetic field to drive the rotor to rotate, and the electronic element can comprise a sensor or a power component.
Furthermore, the installation part is a groove cylinder with a groove formed in the outer side wall, the connecting part is an annular disc with an annular groove formed in the bottom, the winding is installed in the groove in the outer side wall of the groove cylinder and is opposite to the permanent magnet on the inner side wall of the rotor shell, the water cooling jacket is installed on the inner side wall of the groove cylinder, the electronic element is installed at the top of the groove cylinder through a connecting piece, and one end of the central cylinder is arranged in the annular groove in the bottom of the connecting part.
Furthermore, the device also comprises a hub bearing, wherein the hub bearing is arranged between the second cylinder and the central cylinder, the inner ring of the hub bearing is connected with the steering knuckle flange, the outer ring of the hub bearing is connected with the rotor cover plate, and the hub bearing and the dynamic seal labyrinth seal ring form sealing protection together.
Further, the tire assembly comprises a tire and a rim, wherein the rim is fixedly connected with the inner ring of the tire and is coaxially and fixedly connected with the rotor shell.
Compared with the prior art, the invention has the following advantages:
1) according to the invention, the steering knuckle flange and the rotor cover plate with specific structures and shapes are designed, and the dynamic seal labyrinth seal ring is arranged near the axis of the motor, so that the rotating linear speed of the motor is relatively low, the dynamic seal reliability can be effectively improved, and meanwhile, the motor wire harness and the cooling pipeline can be conveniently led out through the hollow structure of the steering knuckle flange;
2) according to the invention, by designing the stator bracket with a specific structure and a specific shape, the electronic components and the cooling system are integrated in the inner space of the inner stator component, so that the integrated heat dissipation is facilitated;
3) according to the invention, the dynamic sealing structure is arranged on the side, close to the suspension, of the hub bearing, and forms sealing protection together with the hub bearing, so that the sealing effect is further improved.
Drawings
FIG. 1 is a cross-sectional view of the structure of the present invention;
fig. 2 is an enlarged view of a portion a.
The automobile wheel hub comprises a wheel 1, a tire, a wheel rim 2, a wheel rim 3, a permanent magnet 4, a winding 5, an electronic element 6, a stator support 61, a connecting part 62, an installation part 7, a wheel hub bearing 8, a steering knuckle flange 81, a first cylinder 82, a second cylinder 9, a dynamic seal labyrinth seal ring 10, a rotor shell 11, a wire harness cooling water pipe 12, a rotor cover plate 121, a ring cover plate 122, a central cylinder 13 and a water cooling jacket.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of protection of the present invention.
Examples
As shown in figure 1, the invention provides a labyrinth dynamic seal outer rotor hub motor driving device, which comprises a wire harness cooling water pipe 11, a dynamic seal labyrinth seal ring 9, an outer rotor assembly, a tire assembly, an inner stator assembly, a steering knuckle flange 8 and a hub bearing 7 which are coaxially arranged.
The outer rotor assembly comprises a rotor shell 10, a rotor cover plate 12 and a permanent magnet 3, wherein the rotor shell 10 and the rotor cover plate 12 are connected with each other to form a cavity, the permanent magnet 3 is attached to the inner side of the rotor shell 10, the rotor shell 10 is basin-shaped, the rotor cover plate 12 comprises a central cylinder 122 and a circular cover plate 121 which are perpendicular to each other, the inner edge of the circular cover plate 121 is fixedly connected with the side wall of the central cylinder 122, the outer edge of the circular cover plate 121 is fixedly connected with the rotor shell 10, and a steering knuckle flange 8 is arranged in the central cylinder 122. The tire assembly comprises a tire 1 and a rim 2, the rim 2 is fixedly connected with an inner ring of the tire 1 and is coaxially and fixedly connected with a rotor shell 10, and the rotor shell 10 drives the tire 1 to rotate through the rim 2.
The inner stator assembly comprises a stator support 6, a winding 4, an electronic element 5 and a water cooling jacket 13, the stator support 6 comprises an installation part 62 and a connecting part 61 which are connected with each other, the connecting part 61 is an annular disc with an annular groove formed in the bottom, and is fixedly connected with a knuckle flange 8, one end of a central cylinder 122 is arranged in the annular groove in the bottom of the connecting part 61, the installation part 62 is a groove cylinder with a groove formed in the outer side wall, the winding 4 is installed in the groove of the outer side wall of the groove cylinder, and is right opposite to a permanent magnet 3 on the inner side wall of a rotor shell 10, and an alternating magnetic field is generated between the permanent magnet 3 to drive the rotor to rotate, the water cooling jacket 13 is installed on the inner side wall of the groove cylinder, the electronic element 5 is installed at the top of the groove cylinder through a connecting piece, wherein the electronic element 5 can comprise a sensor or a power component.
The knuckle flange 8 is a hollow structure for guiding out a motor wiring harness and a cooling pipeline, and comprises a first cylinder 81 and a second cylinder 82 which are connected with each other, the diameter of the first cylinder 81 is smaller than that of the second cylinder 82, the outer side wall of the first cylinder 81 is fixedly connected with the connecting part 61, a sealing groove is formed in the inner side wall of the central cylinder 122, the second cylinder 82 is sleeved in the central cylinder 233, and the dynamic sealing labyrinth seal ring 9 is arranged in the sealing groove.
The hub bearing 7 is arranged between the second cylinder 82 and the central cylinder 122, with its inner ring connected to the knuckle flange 8 and its outer ring connected to the rotor cover plate 12. As shown in fig. 2, the dynamic seal labyrinth seal 9 is disposed between the outer sidewall of the second cylinder 82 and the inner sidewall of the central cylinder 122, in this embodiment, the dynamic seal labyrinth seal 9 adopts an axial labyrinth seal structure, and different structures may be adopted according to different situations.
As shown in fig. 1, the overall structure of the whole device is as follows: the motor rotor shell consists of an outer rotor shell 10 and an inner rotor cover plate 12 which are connected through bolts. The rotor shell 10 and the rim 2 are coaxially arranged and fixedly connected, the tire 1 is arranged on the rim 2, and the permanent magnet 3 is attached to the inner side of the rotor shell 10. The winding 4 is arranged on the stator bracket 6, and the motor rotor is driven to rotate by generating an alternating magnetic field between the winding 4 and the permanent magnet 3. The motor stator bracket 6 is also provided with a water cooling jacket 13 and an electronic element 5. The stator support 6 and the knuckle flange 8 are coaxially arranged and fixedly connected, and the knuckle flange 8 is of a hollow structure and used for leading out wire harnesses such as a water cooling pipeline and a winding arranged on a motor stator. The knuckle flange 8 and the rotor cover plate 12 are mounted on the inner race and the outer race of the hub bearing 7, respectively. And a dynamic seal labyrinth seal ring 9 is arranged on the steering knuckle flange 8.
While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and those skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (4)
1. A labyrinth dynamic seal outer rotor hub motor driving device is characterized by comprising a wire harness cooling water pipe (11), a dynamic seal labyrinth seal ring (9), an outer rotor assembly, a tire assembly, an inner stator assembly and a knuckle flange (8), wherein the outer rotor assembly, the tire assembly, the inner stator assembly and the knuckle flange (8) are coaxially arranged;
the knuckle flange (8) comprises a first cylinder (81) and a second cylinder (82) which are connected with each other, the diameter of the first cylinder (81) is smaller than that of the second cylinder (82), the outer side wall of the first cylinder (81) is fixedly connected with an inner stator assembly, the second cylinder (82) penetrates through an outer rotor assembly, a dynamic seal labyrinth seal ring (9) is arranged between the outer side wall of the second cylinder (82) and the outer rotor assembly, the outer rotor assembly comprises a rotor shell (10) and a rotor cover plate (12) which are connected with each other to form a cavity, and a permanent magnet (3) attached to the inner side of the rotor shell (10), the rotor shell (10) is basin-shaped, the rotor cover plate (12) comprises a central cylinder (122) and a circular ring cover plate (121) which are perpendicular to each other, and the inner edge of the circular ring cover plate (121) is fixedly connected with the side wall of the central cylinder (122), the outer edge of the rotor is fixedly connected with the rotor shell (10), a sealing groove is formed in the inner side wall of the central cylinder (122), the second cylinder (82) is sleeved in the central cylinder (122), and the dynamic sealing labyrinth sealing ring (9) is arranged in the sealing groove;
the inner stator assembly comprises a stator support (6), a winding (4), an electronic element (5) and a water cooling jacket (13), the stator support (6) comprises a mounting part (62) and a connecting part (61) which are connected with each other, the connecting part (61) is fixedly connected with the outer side wall of a first cylinder (81), the winding (4), the electronic element (5) and the water cooling jacket (13) are respectively and fixedly mounted on the mounting part (62), and the winding (4) is matched with the permanent magnet (3) in position and generates an alternating magnetic field with the permanent magnet (3) to drive the rotor to rotate;
installation department (62) set up the recess drum of recess for the lateral wall, connecting portion (61) set up the annular disc of annular groove for the bottom, winding (4) install in the recess of recess drum lateral wall, just to permanent magnet (3) of rotor housing (10) inside wall, water-cooling jacket (13) install on the inside wall of recess drum, electronic component (5) install in the top of recess drum through the connecting piece, the one end of center drum (122) set up in the annular groove of connecting portion (61) bottom.
2. A labyrinth dynamic seal external rotor hub motor driving device as claimed in claim 1, wherein said dynamic seal labyrinth seal ring (9) is an axial labyrinth seal structure.
3. A labyrinth dynamic seal external rotor in-wheel motor drive as claimed in claim 1, further comprising a hub bearing (7), said hub bearing (7) being disposed between the second cylinder (82) and the central cylinder (122), the inner ring of which is connected to the knuckle flange (8), and the outer ring of which is connected to the rotor cover plate (12).
4. A labyrinth dynamic seal external rotor in-wheel motor drive as claimed in claim 1, wherein said tire assembly comprises a tire (1) and a rim (2), said rim (2) being fixedly connected to the inner ring of the tire (1) and coaxially to the rotor housing (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010068862.3A CN111262360B (en) | 2020-01-21 | 2020-01-21 | Labyrinth dynamic seal outer rotor hub motor driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010068862.3A CN111262360B (en) | 2020-01-21 | 2020-01-21 | Labyrinth dynamic seal outer rotor hub motor driving device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111262360A CN111262360A (en) | 2020-06-09 |
| CN111262360B true CN111262360B (en) | 2022-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010068862.3A Active CN111262360B (en) | 2020-01-21 | 2020-01-21 | Labyrinth dynamic seal outer rotor hub motor driving device |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111775622B (en) * | 2020-07-10 | 2021-09-21 | 浙江吉利新能源商用车集团有限公司 | Wheel end assembly of vehicle, control method and vehicle |
| CN112564408A (en) * | 2020-12-10 | 2021-03-26 | 擎风(扬州)新能源科技有限公司 | Sealed high-voltage direct-current brushless outer rotor fan |
| JP2023002194A (en) * | 2021-06-22 | 2023-01-10 | Ntn株式会社 | Vehicle power device and wheel bearing with generator |
| CN116619797B (en) * | 2023-07-20 | 2023-10-03 | 山东豪迈数控机床有限公司 | Tire vulcanizer agitator transmission and tire vulcanizer |
| CN116604858B (en) * | 2023-07-20 | 2023-10-10 | 山东豪迈数控机床有限公司 | Transmission mechanism of agitator of vulcanizing machine and tire vulcanizing device |
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| CN201238228Y (en) * | 2008-07-11 | 2009-05-13 | 鲍文光 | Rotary sealing mechanism of electric motor used for electric car |
| CN102738921A (en) * | 2012-05-17 | 2012-10-17 | 吉林大学 | Water-cooled hub motor |
| US20190131858A1 (en) * | 2017-10-26 | 2019-05-02 | Nidec Corporation | Motor and rotary drive apparatus |
| CN110022029A (en) * | 2019-04-26 | 2019-07-16 | 贵州航天林泉电机有限公司 | A kind of outer rotor hub motor drive assembly |
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2020
- 2020-01-21 CN CN202010068862.3A patent/CN111262360B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105370892A (en) * | 2015-12-11 | 2016-03-02 | 南京工程学院 | Magneto-rheological torque controller |
| CN106926690A (en) * | 2017-03-23 | 2017-07-07 | 重庆大学 | Electric vehicle hub drive device |
| CN107128162A (en) * | 2017-06-28 | 2017-09-05 | 吉林大学 | A kind of heavy-duty vehicle Electric Motor Wheel assembly apparatus and automobile |
| CN107612193A (en) * | 2017-10-24 | 2018-01-19 | 中车永济电机有限公司 | Motor big flow thin oil lubricant sealed bearing housing structure |
| CN208707474U (en) * | 2018-08-03 | 2019-04-05 | 任丘市强东电机有限公司 | A kind of water cooling hub motor |
| CN109768680A (en) * | 2018-11-19 | 2019-05-17 | 眭华兴 | A kind of electric bicycle hub motor with teeth |
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| CN111262360A (en) | 2020-06-09 |
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