CN113098200A - Heat radiation structure of hub motor for electric automobile - Google Patents
Heat radiation structure of hub motor for electric automobile Download PDFInfo
- Publication number
- CN113098200A CN113098200A CN202010017236.1A CN202010017236A CN113098200A CN 113098200 A CN113098200 A CN 113098200A CN 202010017236 A CN202010017236 A CN 202010017236A CN 113098200 A CN113098200 A CN 113098200A
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- CN
- China
- Prior art keywords
- air inlet
- heat dissipation
- hub motor
- transmission shaft
- wheel motor
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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.)
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Classifications
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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
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
- H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
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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
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
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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
Abstract
The invention discloses a heat dissipation structure of a hub motor for an electric automobile, which comprises a heat dissipation fan, a planetary gear mechanism, a hub motor shell, a nut, an air inlet, a rotary transmission block, an air inlet diversion port, a transmission shaft, an inner groove, a return spring, an isolation membrane, an ECU (electronic control unit), a power supply, an auxiliary electromagnetic relay, a main electromagnetic relay, a switch return spring and a switch. The planetary gear mechanism is adopted as a transmission part, the planetary gear mechanism, the transmission shaft and the cooling fan are integrated, when the planetary gear mechanism rotates, the transmission shaft is driven to rotate, and at the moment, the transmission shaft can drive the cooling fan to rotate. The air inlet of the heat dissipation structure of the hub motor for the electric automobile disclosed by the invention adopts an arc transition structure, and compared with a traditional direct opening structure, the air inlet volume is larger, and the heat dissipation efficiency is better; the planetary gear transmission mechanism is adopted to drive the cooling fan to rotate, so that the transmission efficiency is improved; the heat dissipation efficiency of the hub motor is guaranteed by the aid of a double heat dissipation structure of the air inlet and the heat dissipation fan.
Description
Technical Field
The invention relates to the technical field of automobile driving, in particular to a heat dissipation structure of a hub motor for an electric automobile.
Background
With the phenomena of global environmental pollution aggravation, resource shortage and the like, energy conservation and emission reduction become the trend that the society cannot block, and in the automobile field, the rapid development of electric automobiles is more conducive to environmental protection. The motor driving system is a core system of the electric automobile, replaces the function of a traditional automobile engine, and has higher transmission efficiency. The hub motor is the heart of an electric drive system, but the heat generated by the motor cannot be well dissipated due to the sealing performance of the hub motor, so that the operation efficiency of the motor is seriously influenced.
Chinese patent No. CN203368190U discloses an air-cooled fully-sealed hub motor of an electric vehicle, which can effectively reduce the heat in the operation process of the motor, but is difficult to dissipate a large amount of heat generated by the motor operating for a long time by purely external air intake; chinese patent No. CN 105958729a discloses an "electric automobile hub motor air-cooling heat dissipation structure", which utilizes an internal ventilation duct to dissipate heat, but inevitably has a small air volume and a poor heat dissipation effect; chinese patent No. CN208046352U discloses a "heat dissipation housing of a hub motor based on air-cooled heat dissipation", which can effectively dissipate the internal heat, but if the heat is too large, the heat is accumulated, which is not favorable for the normal operation of the motor; chinese patent publication No. CN 204131318U discloses a "hub motor outer rotor air-cooling heat dissipation structure", which can perform natural air-cooling and fan-cooling simultaneously, so that the heat dissipation efficiency is greatly improved, but the structure of the air inlet can be further improved.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to solve the technical problem of providing the heat dissipation structure of the hub motor for the electric automobile, which cools the hub motor by adopting two modes of natural air cooling and fan cooling, so that the heat dissipation efficiency of the hub motor is improved.
To achieve the purpose, the invention adopts the following technical scheme.
The invention provides a heat dissipation structure of a hub motor for an electric automobile, which comprises a heat dissipation fan and a hub motor shell, wherein the rotation of the heat dissipation fan is controlled by the rotation of a transmission shaft, the rotation of the transmission shaft is controlled by the transmission of a planetary gear carrier, the transmission of the planetary gear carrier pushes a notch of a gear ring of the planetary gear carrier to carry out transmission by a rotary transmission block, an air inlet pipe is arranged on the hub motor shell in the circumferential direction around the center of the hub motor shell, the air inlet of the air inlet pipe faces the same direction as the rotation direction of the hub motor shell, and the air outlet of the air inlet pipe is communicated with an air inlet flow guide port on the inner side of the hub.
Preferably, the transmission shaft perpendicularly runs through in-wheel motor shell side, the transmission shaft is kept away from radiator fan side surface with in-wheel motor shell side parallel and level, the transmission shaft with in-wheel motor shell clearance fit.
Preferably, the heat dissipation fan is connected with the transmission shaft through a key.
Preferably, the pipe surface of the air inlet pipe adopts a circular arc transition structure.
Preferably, the air inlet pipe is internally provided with a separation film which only allows air to pass through, and the separation film is arranged in parallel with the section of the air inlet pipe.
Preferably, a plurality of inner grooves are formed in the circumferential direction of an inner ring of the hub motor shell, and the rotary transmission block is elastically connected with the inner grooves through return springs.
Preferably, the heat radiation structure of in-wheel motor for electric automobile still includes temperature monitoring control system, temperature monitoring control system is including the ECU system that is used for monitoring in-wheel motor inside temperature, be used for supplying with the power of temperature monitoring control system electric energy, be used for controlling the switch of temperature monitoring system circuit break-make, be used for controlling switch disconnection and closed supplementary electromagnetic relay, connection the switch return spring of switch, control rotatory drive block is closed and the main electromagnetic relay who pops open.
Preferably, the hub motor housing is fixed through bolts, and the bolts are arranged on the side face of the hub motor housing along the circumferential direction of the transmission shaft.
The invention has the beneficial effects of.
1. The heat dissipation efficiency of the hub motor is improved by using the double heat dissipation structure of the air inlet and the heat dissipation fan.
2. The planetary gear carrier and the rotary transmission block are utilized to ensure that the air inlet pipe and the fan can work independently and can cooperate with each other under the condition of higher temperature.
3. The air-supply line adopts the excessive structure of arc, compares in traditional upright open structure, and the air inlet effect is better, and the radiating efficiency is higher.
Drawings
Fig. 1 is an exploded view of the entire structure of a heat dissipation structure of a wheel hub motor for an electric vehicle.
Fig. 2 is a perspective view 1 of the entire structure of a heat dissipation structure of an in-wheel motor for an electric vehicle.
Fig. 3 is a perspective view 2 showing the overall structure of a heat dissipation structure of an in-wheel motor for an electric vehicle.
Fig. 4 is a cross-sectional view of the hub motor housing.
Fig. 5 is an enlarged partial cross-sectional view of the hub motor housing.
Fig. 6 is a schematic view of a rotary drive structure.
Fig. 7 is a schematic structural view of the rotary transmission block.
Fig. 8 is a schematic view of the structure of the air inlet duct.
Fig. 9 is a circuit diagram of a temperature monitoring control system.
In the figure: 1. a heat radiation fan; 2. a planet carrier; 3. a hub motor housing; 4. a bolt; 5. an air inlet pipe; 6. rotating the transmission block; 7. an air inlet diversion port; 8. a drive shaft; 9. an inner groove; 10. a return spring; 11. an isolation film; 12. an ECU system; 13. a power source; 14. an auxiliary electromagnetic relay; 15. a switch return spring; 16. a main electromagnetic relay; 17. and (4) switching.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
As shown in fig. 1-9, the heat dissipation structure of the wheel hub motor for the electric vehicle provided in this embodiment includes a heat dissipation fan 1 and a wheel hub motor housing 3, wherein the rotation of the heat dissipation fan 1 is controlled by the rotation of a transmission shaft 8, the rotation of the transmission shaft 8 is controlled by the transmission of a planet gear carrier 2, the transmission of the planet gear carrier 2 is performed by pushing a gear ring notch of the planet gear carrier 2 by a rotation transmission block 6, the wheel hub motor housing 3 is provided with an air inlet pipe 5 around the center circumference thereof, the air inlet of the air inlet pipe 5 faces the same direction as the rotation direction of the wheel hub motor housing 3, the air outlet of the air inlet pipe 5 is communicated with an air inlet flow guide opening 7 at the inner side of the wheel hub motor housing 3, and external air is introduced into the wheel hub motor through the air inlet flow guide opening 7, at normal temperature, only the air inlet pipe 5 on the wheel hub motor housing 3 works, and due to the, the hub motor is used for dissipating heat and cooling the hub motor in the hub motor shell 3; when a certain temperature is reached, the heat radiation fan 1 starts to work, at the moment, because the hub motor shell 3 rotates, the air inlet pipe 5 is still in an air inlet state, the rotary transmission block 6 in the hub motor shell 3 is in contact with the gear ring notch on the planet gear carrier 2, along with the rotation of the hub motor shell 3, the rotary transmission block 6 drives the outer ring of the planet gear carrier 2 to rotate, the planet gear carrier 2 drives the rotating shaft 8 to rotate, the rotating shaft 8 drives the heat radiation fan 1 to rotate and generate air, the air inlet of the air inlet pipe 5 is realized, the double cooling effect of the air generated by the heat radiation fan 1 is realized, and the heat radiation effect of the hub motor is.
In order to ensure that the rotating shaft 8 does not synchronously rotate with the hub motor shell 3 when the hub motor shell 3 rotates, further, the transmission shaft 8 vertically penetrates through the side surface of the hub motor shell 3, the surface of the transmission shaft 8, which is far away from the cooling fan 1, is flush with the side surface of the hub motor shell 3, the transmission shaft 8 is in clearance fit with the hub motor shell 3, since the rotating shaft 8 drives the heat dissipation fan 1 to rotate, in order to ensure that the heat dissipation fan 1 and the air inlet pipe 5 work independently, it is necessary to ensure that the rotating shaft 8 does not rotate synchronously with the hub motor housing 3, because the transmission shaft 8 is in clearance fit with the hub motor shell 3, when the air inlet pipe 5 enters air, that is, when the hub motor housing 3 rotates, the rotating shaft 8 is not influenced by the rotation of the hub motor housing 3 to keep a static state or is influenced by inertia and the like to generate small rotation, and at this time, the rotating shaft is under a general temperature condition, that is, when the heat dissipation motor 1 does not need to work.
In order to guarantee the synchronous rotation of rotating shaft 8 and radiator fan 1, further, through the key-type connection between radiator fan 1 and the transmission shaft 8, compare in rotating shaft 8 and the inserting hole between radiator fan 1 interference fit's the connected mode, the key-type connection makes things convenient for the dismouting between rotating shaft 8 and the radiator fan 1 more.
In order to improve the air inlet efficiency of the air inlet pipe, the pipe surface of the air inlet pipe 5 adopts an arc transition structure, the width of the air inlet pipe 5 is increased, and the air inlet quantity of the air inlet pipe 5 is improved.
In order to reduce the influence of external dust and water vapor on the heat dissipation fan 1, furthermore, an isolation film 11 which only allows air to pass through is arranged inside the air inlet pipe 5, the isolation film 11 is arranged in parallel with the cross section of the air inlet pipe 5, and the heat dissipation effect of the hub motor is affected due to dust deposition and corrosion of the heat dissipation fan 1 caused by excessive dust and water vapor, so that the dust and the water vapor need to be separated by the isolation film 11.
In order to control the bouncing and closing of the rotary transmission block 6, further, a plurality of inner grooves 9 are circumferentially arranged on the inner ring of the hub motor shell 3, the rotary transmission block 6 is elastically connected with the inner grooves 9 through a return spring 10, the return spring 10 is in a compression state at a common temperature, the rotary transmission block 6 is closed in the inner grooves 9, after the temperature rises, when the cooling fan 1 needs to work, the return spring 10 is in a rebound state under the control of a temperature monitoring control system, the rotary transmission block 6 stretches out of the inner grooves 9 at the moment, the rotary transmission block 6 drives the planet gear carrier 2 to rotate, and then the cooling fan 1 is driven to work, and the two cooling modes are changed.
In order to control different heat dissipation states, further, the temperature monitoring and controlling system comprises an ECU system 12 for monitoring the internal temperature of the hub motor, a power supply 13 for supplying electric energy to the temperature monitoring and controlling system, a switch 17 for controlling the on-off of a circuit of the temperature monitoring system, an auxiliary electromagnetic relay 14 for controlling the on-off of the switch 17, a switch return spring 15 connected with the switch 17, and a main electromagnetic relay 16 for controlling the on-off and the bouncing of the rotary transmission block 6, wherein the ECU system 12 monitors the temperature in the hub motor, when the temperature is in a general temperature, the auxiliary electromagnetic relay 14 is in an unpowered state, the switch 17 is closed, the main electromagnetic relay 16 is powered, the return spring 10 is in a compressed state, the rotary transmission block 6 is closed, and only the ventilation pipe 5 works; when the temperature in the hub motor reaches an early warning value, the auxiliary electromagnetic relay 14 is powered on, the switch 17 is switched off, the main electromagnetic relay 16 is powered off, the return spring 10 is in a rebound state, the rotary transmission block 6 is popped up to drive the planet gear carrier 2 to rotate, and the ventilation pipe 5 and the cooling fan 1 are both in a working state at the moment.
In order to fix the in-wheel motor housing 3, further, the in-wheel motor housing 3 is fixed by bolts 4, and the bolts 4 are circumferentially arranged on the side surface of the in-wheel motor housing 3 around the transmission shaft 8.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. The present invention is not to be limited by the specific embodiments disclosed herein, and other embodiments that fall within the scope of the claims of the present application are intended to be within the scope of the present invention.
Claims (8)
1. The utility model provides a heat radiation structure of in-wheel motor for electric automobile, includes radiator fan (1), in-wheel motor shell (3), its characterized in that: the rotation of the cooling fan (1) is controlled by the rotation of a transmission shaft (8), the rotation of the transmission shaft (8) is controlled by the transmission of a planet gear carrier (2), and the transmission of the planet gear carrier (2) is realized by pushing a gear ring notch of the planet gear carrier (2) by a rotary transmission block (6); the hub motor shell (3) is provided with an air inlet pipe (5) around the center circumference, and the air inlet of the air inlet pipe (5) faces the same direction as the rotation direction of the hub motor shell (3); the air outlet of the air inlet pipe (5) is communicated with the air inlet diversion port (7) on the inner side of the hub motor shell (3), and external air is guided into the hub motor through the air inlet diversion port (7).
2. The heat dissipation structure of the in-wheel motor for the electric vehicle according to claim 1, characterized in that: transmission shaft (8) run through perpendicularly in-wheel motor shell (3) side, keep away from transmission shaft (8) radiator fan (1) a side surface with in-wheel motor shell (3) side parallel and level, transmission shaft (8) with in-wheel motor shell (3) clearance fit.
3. The heat dissipation structure of the in-wheel motor for the electric vehicle according to claim 1, characterized in that: the heat radiation fan (1) is connected with the transmission shaft (8) through a key.
4. The heat dissipation structure of the in-wheel motor for the electric vehicle according to claim 1, characterized in that: the pipe surface of the air inlet pipe (5) adopts an arc transition structure.
5. The heat dissipation structure of the in-wheel motor for the electric vehicle according to claim 4, wherein: an isolating membrane (11) allowing air to pass through is arranged inside the air inlet pipe (5), and the isolating membrane (11) and the cross section of the air inlet pipe (5) are arranged in parallel.
6. The heat dissipation structure of the in-wheel motor for the electric vehicle according to claim 1, characterized in that: a plurality of inner grooves (9) are formed in the circumferential direction of an inner ring of the hub motor shell (3), and the rotary transmission block (6) is elastically connected with the inner grooves (9) through return springs (10).
7. The heat dissipation structure of the in-wheel motor for the electric vehicle according to claim 5, wherein: the device also comprises a temperature monitoring control system; the temperature monitoring and controlling system comprises an ECU system (12) for monitoring the internal temperature of the hub motor, a power supply (13) for supplying electric energy to the temperature monitoring and controlling system, a switch (17) for controlling the on-off of a circuit of the temperature monitoring system, an auxiliary electromagnetic relay (14) for controlling the on-off of the switch (17), a switch return spring (15) connected with the switch (17), and a main electromagnetic relay (16) for controlling the on-off and the bouncing of the rotary transmission block (6).
8. The heat dissipation structure of the in-wheel motor for the electric vehicle according to claim 1, characterized in that: the hub motor shell (3) is fixed through a bolt (4), and the bolt (4) winds the transmission shaft (8) in the circumferential direction and is arranged on the side face of the hub motor shell (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010017236.1A CN113098200A (en) | 2020-01-08 | 2020-01-08 | Heat radiation structure of hub motor for electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010017236.1A CN113098200A (en) | 2020-01-08 | 2020-01-08 | Heat radiation structure of hub motor for electric automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113098200A true CN113098200A (en) | 2021-07-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010017236.1A Pending CN113098200A (en) | 2020-01-08 | 2020-01-08 | Heat radiation structure of hub motor for electric automobile |
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| Country | Link |
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| CN (1) | CN113098200A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113672054A (en) * | 2021-08-23 | 2021-11-19 | 江苏芯安集成电路设计有限公司 | Single chip microcomputer signal processor |
| CN115833481A (en) * | 2023-02-08 | 2023-03-21 | 深圳市鸿明机电有限公司 | Double-cooling motor |
| CN116722699A (en) * | 2023-08-10 | 2023-09-08 | 大澳电器（江苏）有限公司 | Motor internal and external pressure balance system |
| CN116846148A (en) * | 2023-09-04 | 2023-10-03 | 广东兆力电机集团有限公司 | Motor with auxiliary heat dissipation device |
| CN117453018A (en) * | 2023-10-27 | 2024-01-26 | 北京交通大学 | Computer support device for developing computer software |
-
2020
- 2020-01-08 CN CN202010017236.1A patent/CN113098200A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113672054A (en) * | 2021-08-23 | 2021-11-19 | 江苏芯安集成电路设计有限公司 | Single chip microcomputer signal processor |
| CN113672054B (en) * | 2021-08-23 | 2022-07-15 | 江苏芯安集成电路设计有限公司 | Single chip microcomputer signal processor |
| CN115833481A (en) * | 2023-02-08 | 2023-03-21 | 深圳市鸿明机电有限公司 | Double-cooling motor |
| CN116722699A (en) * | 2023-08-10 | 2023-09-08 | 大澳电器（江苏）有限公司 | Motor internal and external pressure balance system |
| CN116722699B (en) * | 2023-08-10 | 2023-11-07 | 大澳电器（江苏）有限公司 | Motor internal and external pressure balance system |
| CN116846148A (en) * | 2023-09-04 | 2023-10-03 | 广东兆力电机集团有限公司 | Motor with auxiliary heat dissipation device |
| CN116846148B (en) * | 2023-09-04 | 2023-11-17 | 广东兆力电机集团有限公司 | Motor with auxiliary heat dissipation device |
| CN117453018A (en) * | 2023-10-27 | 2024-01-26 | 北京交通大学 | Computer support device for developing computer software |
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