CN105939079A - Ventilation and heat-dissipation structure of electric vehicle in-wheel motor - Google Patents
Ventilation and heat-dissipation structure of electric vehicle in-wheel motor Download PDFInfo
- Publication number
- CN105939079A CN105939079A CN201610421341.5A CN201610421341A CN105939079A CN 105939079 A CN105939079 A CN 105939079A CN 201610421341 A CN201610421341 A CN 201610421341A CN 105939079 A CN105939079 A CN 105939079A
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- China
- Prior art keywords
- air
- motor
- wheel hub
- wheel motor
- motor shaft
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/08—Arrangements for cooling or ventilating by gaseous cooling medium circulating wholly within the machine casing
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/22—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating around the armatures, e.g. flywheel magnetos
-
- 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
- H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/003—Couplings; Details of shafts
-
- 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
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
Abstract
The invention discloses a ventilation and heat-dissipation structure of an electric vehicle in-wheel motor. In-wheel motor end covers are arranged at the left side and the right side of the in-wheel motor; a first bearing is arranged between a motor shaft and the in-wheel motor end cover at the left side; seal structures are arranged between the in-wheel motor end covers and the outer rotor and between the in-wheel motor end covers and the motor shaft; the motor shaft is provided with inner and outer two-layer concentric circle air ducts; the inner-layer air duct is an air inlet channel; the outer-layer air duct is an air outlet channel; one end of each of the air inlet channel and the air outlet channel communicate with an inner cavity of the in-wheel motor; and the other ends of the air inlet channel and the air outlet channel are connected with an air inlet and an air outlet respectively. By the ventilation and heat-dissipation structure of the electric vehicle in-wheel motor, airflow smoothly flows in the sealed in-wheel motor to take away heat; the heat dissipation performance and the waterproofness of an in-wheel motor system are considered; the structure is ingeniously transformed under the premise of not affecting the traditional in-wheel motor structure; good forced ventilation and heat-dissipation effects can be achieved; the safety of an electric vehicle in the driving process is ensured; and meanwhile, the compactness of the motor structure and the economy of the manufacturing cost are considered.
Description
Present patent application is invention and created name " the waterproof wind-cooling heat dissipating of a kind of hub motor for electric automobile
Structure " divisional application, the filing date of original application on October 11st, 2014, Application No.
2014105353103。
Technical field
The present invention relates to electric automobile, particularly relate to electric automobile hub.
Background technology
Wheel hub motor is a kind of inner stator, the motor of outer rotor form, and its power, transmission and brake unit are all
It is incorporated in wheel hub, therefore the mechanical part of electric vehicle is greatly simplified.Heating in motor work process
Coming from the loss that winding is unshakable in one's determination, the size of caloric value is the most relevant with stator current, the most indirectly with output
Power is relevant with output moment of torsion.When the electric automobile of In-wheel motor driving is in heavy duty, climbing or anxious acceleration
Time, motor need bigger electric current to provide bigger output moment of torsion, at short notice can at motor winding and
Produce more heat on iron core, make winding temperature raise.But motor work has certain temperature limiting,
The class of insulation of winding limits the temperature upper limit of motor internal.The temperature that motor internal is higher makes the effect of motor
Rate is substantially reduced, and once exceedes this temperature upper limit, and the winding insulation of motor, by impaired, causes motor winding turns
Between short circuit even blow.It addition, the permanent magnet magnet steel the most at high temperature loss of excitation within wheel hub motor, work as temperature
After exceeding curie point, the magnetic of permanent magnet can not be recovered completely, affects exerting oneself and efficiency of motor.
In order to enable wheel hub motor normally to work at a temperature of allowing, generally there is following several processing mode:
One is the model selecting rated power bigger, and the rated power of such motor is relative to electric automobile nominal situation
The power of Shi Suoxu has a bigger redundancy, relies on natural heat dissipation can meet requirement during motor work, but this side
Method is not reasonable at the aspect such as economy and space utilization；Two is the heat radiation by installing on wheel hub motor end cap
Sheet increases area of dissipation, the heat produced during rapid dispersion motor runs in the way of natural heat dissipation, the party
Method is noted above in patent of invention CN201310756432.0, but the radiating effect of this kind of mode depends on heat radiation
The size of sheet, surface area and gravity-flow ventilation condition, usual heat-sinking capability is limited；Another kind of method is to use by force
Heat dissipation technology processed, including modes such as air-cooled and liquid are cold.Generally use air blast cooling, i.e. install at motor internal
Fan, makes motor internal form cross-ventilation with outside, and heat can be discharged to outside motor in time.For
Identical radiator structure, the radiating effect natural heat dissipation to be significantly better than of air blast cooling.On the other hand, it is considered to
Being likely encountered hydrops and sleety weather in vehicle travel process, wheel hub motor requires have good sealing,
Destroy winding insulation to prevent water from penetrating into motor internal, cause electric short circuit and chemical attack, but current
Air-cooled heat dissipation structure there is no method and solves the requirement of this sealing, and it is contradiction that above both sides requires, always
Annoying those skilled in the art.
Summary of the invention
The technical problem to be solved is just to provide the ventilation and heat knot of a kind of hub motor for electric automobile
Structure, had both maintained the water-proof sealing of wheel hub, when can realize again air blast cooling to meet the high-power operation of motor
Cooling requirements, it is ensured that the safety during electric automobile during traveling, taken into account the tight of electric machine structure simultaneously
Gathering property and the economy of manufacturing cost.
For solving above-mentioned technical problem, the present invention adopts the following technical scheme that the logical of hub motor for electric automobile
Wind radiator structure, including outer rotor and inner stator, described outer rotor is located at inner stator outer circumferential sides, described interior
Stator is installed on motor shaft, is provided with wheel hub motor end cap, described wheel hub motor in the wheel hub motor left and right sides
End cap is fixed with outer rotor, is provided with clutch shaft bearing between described motor shaft and left side wheel hub electric motor end cap, described
The second bearing it is provided with between motor shaft and right side wheel hub electric motor end cap, described wheel hub motor end cap and outer rotor,
Being provided with sealing structure between motor shaft, described motor shaft is provided with the concentrically ringed air channel of inside and outside two-layer, internal layer air channel
For air intake passage, outer layer air channel is air-out passage, described air intake passage and air-out passage one end and wheel hub motor
Inner space, described air intake passage and the air-out passage other end connect air inlet and air outlet respectively, described in enter
Air port and air outlet are positioned at outside vehicle and paddle more than altitude line and be provided with waterproof and dustproof structure, described motor
Axle includes that motor shaft body, described motor shaft body center hollow form described internal layer air intake passage, described
It is provided with axle sleeve between motor shaft and wheel hub motor end cap, between described axle sleeve and described motor shaft body, forms institute
The outer layer air-out passage stated, is provided with ventilation gap between described inner stator outer circle wall and outer rotor inner peripheral wall
Connection wheel hub motor inner stator, the cavity of outer rotor, described air intake passage end is empty with wheel hub motor inner stator
Chamber connects, and described clutch shaft bearing uses ventilation bearing, makes Wheel hub motor external rotor cavity connect with air-out passage,
Circumferentially arranged with ventilation in the right-hand member of described motor shaft body circumferential wall between the second bearing and stator core
Hole, described axle sleeve is provided with blade or air channel structure in the gap between clutch shaft bearing and air-out passage, described
Blade or air channel structure are driven by wheel hub and rotate.
Preferably, described air outlet is provided with force ventilated fan.
The present invention uses double-deck axle aeration structure inside and outside a kind of sealing being isolated from the outside, with the wheel of particular design
Hub electric motor end cap matches, and in addition to air inlet/outlet passage, wheel hub motor inner sealing is closed, wind inlet channel, wheel
Ventilation gap between hub electric motor internal stator chamber, wheel hub motor rotor, Wheel hub motor external rotor chamber, outer shaft
Hold air channel, exhaust air flue collectively constitutes an air flue, and air is from the air inlet being connected with wind inlet channel
Enter wheel hub motor inner chamber, when stator winding and the iron core of motor, take away heat and from exhaust air flue
Air outlet is discharged, thus realizes the effect of heat radiation.
To sum up, the present invention makes air-flow take away heat at the internal smooth flow of the wheel hub motor sealed, and has taken into account wheel
The thermal diffusivity of hub electric system and water proofing property, this structure is entered on the premise of not affecting original hub motor structure
Row is transformed cleverly, both can realize good forced ventilation radiating effect, it is ensured that electric automobile during traveling process
In safety, taken into account the compactedness of electric machine structure and the economy of manufacturing cost simultaneously.
Accompanying drawing explanation
The invention will be further described with detailed description of the invention below in conjunction with the accompanying drawings:
Fig. 1 is the waterproof air-cooled heat dissipation structure cross-sectional view of hub motor for electric automobile；
The waterproof air-cooled heat dissipation structure air circulation schematic diagram of Fig. 2 hub motor for electric automobile.
Detailed description of the invention
As depicted in figs. 1 and 2, the waterproof air-cooled heat dissipation structure of a kind of hub motor for electric automobile, including outside
Rotor 2 and inner stator 1, described inner stator 1 is formed by stalloy closed assembly, embeds three-phase windings in stator slot.
Described outer rotor 2 is located at inner stator 1 outer circumferential sides, uniformly embeds permanent magnet magnet steel inside described outer rotor 2.
Described inner stator 1 is installed on motor shaft 4, is provided with wheel hub motor end cap 3 in the axial both sides of wheel hub motor, bag
Including left side wheel hub electric motor end cap and right side wheel hub electric motor end cap, described wheel hub motor end cap 3 is solid with outer rotor 2
Fixed, it is provided with clutch shaft bearing, described motor shaft and right side between described motor shaft 4 and left side wheel hub electric motor end cap
Being provided with the second bearing between wheel hub motor end cap, the motor shaft other end is connected with vehicle hanging mechanism.
Be provided with sealing structure between described wheel hub motor end cap 3 and outer rotor and motor shaft 4, outer rotor with
The wheel hub motor inner chamber of closing is formed between the wheel hub motor end cap of both sides.On the right side of Yi Fangmian, wheel hub electric motor end cap is complete
Totally-enclosed machine wheel hub, on the other hand in addition to clutch shaft bearing, left side wheel hub electric motor end cap also closes motor wheel
Hub, the ventilation and heat passage left behind on clutch shaft bearing connects with the cavity in motor wheel hub.Described motor shaft
Being provided with the concentrically ringed air channel of inside and outside two-layer, internal layer air channel is air intake passage 5, and outer layer air channel is air-out passage 6,
The hub end of described air intake passage 5 and air-out passage 6 and wheel hub motor inner space, described air intake passage and
The other end of air-out passage connects air inlet and air outlet respectively, and described air inlet and air outlet are positioned at outside vehicle
Portion paddles more than altitude line and is provided with waterproof and dustproof structure.Owing to wheel hub motor inner chamber seals on the whole, only
The wind-cooling heat dissipating passage having setting can be with wheel hub motor inner space, even and air intake passage and air-out are logical
Road is also provided with corresponding water proof and dust proof structure, thus ensure that the water proofing property of entirety.
Described motor shaft 4 includes motor shaft body, and motor shaft body inner tubal wall is fixing with stator core to be connected,
Outer tube wall is provided with flange and fixes with wheel hub motor end cap.Described motor shaft body center hollow is formed described interior
Layer wind inlet channel, is arranged with axle sleeve, described axle sleeve and described electricity between described motor shaft and wheel hub motor end cap
Described outer layer air-out passage is formed between arbor body.
It is provided with ventilation gap between described inner stator outer circle wall and outer rotor inner peripheral wall and connects wheel hub motor
Medial and lateral cavity, described air intake passage end connects with wheel hub motor inner chambers, and described clutch shaft bearing is adopted
Cavity outside wheel hub motor is made to connect with air-out passage with ventilation bearing.
The hub end of described motor shaft body, in the circumferential wall between the second bearing and stator core circumferentially
It is provided with air vent.Described axle sleeve is provided with blade or air channel knot in the gap between clutch shaft bearing and exhaust air flue
Structure 7, described blade or air channel structure 7 are driven by wheel hub and rotate, and wherein air channel structure can use spiral type to tie
Structure, to promote the flowing of air-flow, described air outlet is provided with force ventilated fan.
In hub motor for electric automobile involved in the present invention, wind inlet channel, wheel hub motor inner chambers,
Cavity, clutch shaft bearing air channel, air-out wind outside ventilation gap between wheel hub motor rotor, wheel hub motor
Road collectively constitutes an air flue, and air enters in wheel hub motor from the air inlet being connected with wind inlet channel
Chamber, when stator winding and the iron core of motor, takes away heat and discharges from the air outlet of exhaust air flue, from
And realize the effect of heat radiation.
In order to enable air to flow along air flue, need to apply in the duct suction.During high vehicle speeds,
The outer wheel hub rotated drives the blade outside clutch shaft bearing or air channel structure synchronous rotary, by hot-air from wheel hub
Motor cavity is extracted out, is transported to air outlet through exhaust air flue, and the motor internal sealed is owing to producing negative pressure,
From the air that air inlet inlet temperature is relatively low, cooling winding and iron core, so go round and begin again further.
On the other hand, it is contemplated that during the climbing of vehicle low-speed heave-load, the rotating speed of wheel is relatively low, and air mass flow is not enough,
The fan energising that now can make air outlet rotates and produces suction, forces air to flow in air channel, dissipates to strengthen
Thermal effect.
Claims (2)
1. the ventilation and heat structure of hub motor for electric automobile, including outer rotor and inner stator, described outer rotor is located at
Inner stator outer circumferential sides, described inner stator is installed on motor shaft, is provided with wheel hub in the wheel hub motor left and right sides
Electric motor end cap, described wheel hub motor end cap fixes with outer rotor, described motor shaft and left side wheel hub electric motor end cap
Between be provided with clutch shaft bearing, be provided with the second bearing between described motor shaft and right side wheel hub electric motor end cap, it is special
Levy and be: between described wheel hub motor end cap and outer rotor, motor shaft, be provided with sealing structure, described motor shaft
Being provided with the concentrically ringed air channel of inside and outside two-layer, internal layer air channel is air intake passage, and outer layer air channel is air-out passage, institute
Stating air intake passage and air-out passage one end and wheel hub motor inner space, described air intake passage and air-out passage are another
One end connects air inlet and air outlet respectively, and described air inlet and air outlet are positioned at outside vehicle and paddle altitude line
Above and be provided with waterproof and dustproof structure, described motor shaft includes motor shaft body, in described motor shaft body
Internal layer air intake passage described in empty formation, is provided with axle sleeve between described motor shaft and wheel hub motor end cap in the heart,
Described outer layer air-out passage, described inner stator excircle is formed between described axle sleeve and described motor shaft body
It is provided with ventilation gap between wall with outer rotor inner peripheral wall and connects the cavity of wheel hub motor inner stator, outer rotor,
Described air intake passage end connects with wheel hub motor inner stator cavity, and described clutch shaft bearing uses ventilation bearing,
Make Wheel hub motor external rotor cavity connect with air-out passage, the right-hand member of described motor shaft body at the second bearing and
Circumferentially arranged with air vent in circumferential wall between stator core, described axle sleeve is at clutch shaft bearing and air-out passage
Between gap in be provided with blade or air channel structure, described blade or air channel structure by wheel hub drive rotate.
The ventilation and heat structure of hub motor for electric automobile the most according to claim 1, it is characterised in that: institute
State air outlet and force ventilated fan is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610421341.5A CN105939079B (en) | 2014-10-11 | 2014-10-11 | The ventilation and heat structure of hub motor for electric automobile |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410535310.3A CN104319931B (en) | 2014-10-11 | 2014-10-11 | Waterproof air cooling heat radiation structure of hub motor of electric automobile |
| CN201610421341.5A CN105939079B (en) | 2014-10-11 | 2014-10-11 | The ventilation and heat structure of hub motor for electric automobile |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410535310.3A Division CN104319931B (en) | 2014-10-11 | 2014-10-11 | Waterproof air cooling heat radiation structure of hub motor of electric automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105939079A true CN105939079A (en) | 2016-09-14 |
| CN105939079B CN105939079B (en) | 2018-04-10 |
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Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610421341.5A Active CN105939079B (en) | 2014-10-11 | 2014-10-11 | The ventilation and heat structure of hub motor for electric automobile |
| CN201610412794.1A Active CN105958729B (en) | 2014-10-11 | 2014-10-11 | Hub motor for electric automobile air-cooled heat dissipation structure |
| CN201410535310.3A Active CN104319931B (en) | 2014-10-11 | 2014-10-11 | Waterproof air cooling heat radiation structure of hub motor of electric automobile |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
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| CN201610412794.1A Active CN105958729B (en) | 2014-10-11 | 2014-10-11 | Hub motor for electric automobile air-cooled heat dissipation structure |
| CN201410535310.3A Active CN104319931B (en) | 2014-10-11 | 2014-10-11 | Waterproof air cooling heat radiation structure of hub motor of electric automobile |
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| CN106411047A (en) * | 2016-11-28 | 2017-02-15 | 山东理工大学 | Hub motor driving system with air cooling mode |
| WO2020134422A1 (en) * | 2018-12-25 | 2020-07-02 | 珠海格力电器股份有限公司 | Motor rotor, compressor, refrigerant circulation system, and cooling device |
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- 2014-10-11 CN CN201610421341.5A patent/CN105939079B/en active Active
- 2014-10-11 CN CN201610412794.1A patent/CN105958729B/en active Active
- 2014-10-11 CN CN201410535310.3A patent/CN104319931B/en active Active
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| JPH0926087A (en) * | 1995-07-14 | 1997-01-28 | Hitachi Koki Co Ltd | Lubricating oil sucking-up device for rotary equipment |
| CN1833345A (en) * | 2003-07-10 | 2006-09-13 | 磁应用股份有限公司 | Compact high power alternator |
| CN202931112U (en) * | 2012-12-05 | 2013-05-08 | 湘电集团有限公司 | Cooling and protecting apparatus of horizontal motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106411047A (en) * | 2016-11-28 | 2017-02-15 | 山东理工大学 | Hub motor driving system with air cooling mode |
| WO2020134422A1 (en) * | 2018-12-25 | 2020-07-02 | 珠海格力电器股份有限公司 | Motor rotor, compressor, refrigerant circulation system, and cooling device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105939079B (en) | 2018-04-10 |
| CN104319931A (en) | 2015-01-28 |
| CN105958729A (en) | 2016-09-21 |
| CN105958729B (en) | 2018-07-03 |
| CN104319931B (en) | 2017-01-25 |
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