CN106452013B - A kind of winding strengthens the axial magnetic flux hub motor of heat dissipation - Google Patents
A kind of winding strengthens the axial magnetic flux hub motor of heat dissipation Download PDFInfo
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- CN106452013B CN106452013B CN201611046485.3A CN201611046485A CN106452013B CN 106452013 B CN106452013 B CN 106452013B CN 201611046485 A CN201611046485 A CN 201611046485A CN 106452013 B CN106452013 B CN 106452013B
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- stator
- heat pipe
- stator tooth
- winding
- magnetic flux
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K55/00—Dynamo-electric machines having windings operating at cryogenic temperatures
- H02K55/02—Dynamo-electric machines having windings operating at cryogenic temperatures of the synchronous type
- H02K55/04—Dynamo-electric machines having windings operating at cryogenic temperatures of the synchronous type with rotating field windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/22—Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Superconductive Dynamoelectric Machines (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
A kind of winding strengthens the axial magnetic flux hub motor of heat dissipation.The motor uses intermediate stator, the sandwich structure of both sides rotor in the axial direction.Motor stator is made of Q stator tooth unit, and Q is number of slots, is the positive integer times of number of motor phases m.Each stator tooth unit includes a stator tooth iron core and the coil that is wrapped on stator tooth iron core, is mounted with superconducting flat heat pipe between two adjacent stator tooth units.One end of superconducting flat heat pipe is in close contact with two intermediate stator tooth unit windings are sandwiched, and the other end is inserted into the coolant flow channel in stator support.Using superconducting flat heat pipe strong heat transfer and by force change thermal property, the heat of winding is run through into the coolant flow channel that superconducting flat heat pipe is transmitted to stator support, realizes that winding strengthens heat dissipation, promotion wheel hub motor torque density.
Description
Technical field
The present invention relates to a kind of axial magnetic flux hub motors.
Background technique
Current electric car mostly uses greatly centralized driving method, and power transmitting need to generally pass through gearbox, differential
The mechanical devices such as device, transmission shaft and universal joint are transferred to driving wheel, are driven chain length, and efficiency is lower.And it is special as distribution driving
The dynamical system of sign, hub motor is directly installed in driving wheel, has that transmission chain is short, transmission is efficient, compact-sized etc. prominent
Advantage out, extensive concern and research by domestic and international scientific research institution and mainstream depot.
However it is limited and demand of the vehicle to hub motor torque and weight by space in wheel hub, hub motor size
It is required that compact, torque density index is high.Axial magnetic flux hub motor has axial dimension compact, the big advantage of output torque, fits
Share in the distributed drive type electric automobile of wheel hub driving and other stringent to space constraint directly drive application.State
Interior civilian hub motor driven electric vehicle is in the technical research stage, and uses the hybrid vehicle of In-wheel motor driving
Technology has become the important development direction of vehicle power actuation techniques of new generation.
Patent CN200980147427.1 proposes a kind of for having determining for the axial-flux electric machine of liquid-cooling system
Sub-segments, stator core are annular core element, are had along datum axis, which has multiple electricity along its annular center tape
Conductor coils, the electric conductor coil are spaced each other and around cores, the interval between two neighboring conductor coil
Place is mounted with cooling section, and multiple cooling section parallel connections form liquid-cooling system.Although the patent can improve axial direction electric machine around
Group cooling condition, but cooling system and winding are coaxially wrapped on annular core, and cooling section processing is complicated, and cooling section is not only
Winding usable area is occupied, effective air gap is also increased, the intensity of permanent magnetic field is weakened, reduces axial magnetic flux indirectly
The torque density of hub motor.
Patent CN201510098576.0 discloses a kind of cooling axial-flux electric machine of liquid and stator interior insulation surface
Forming method.The patent forms a closed seal chamber, the seal chamber after sealing cover to be mounted on to the open side of motor casing
Inside there is the stator being fixedly mounted on motor casing inner face, is provided on the outside of the seal chamber and is mounted on sealing cover outer end face
Rotor, the installation site face stator of the rotor, installation coolant liquid inlet and outlet, the electricity on the outer circumference surface of the seal chamber
The groove being interlinked to the outside in being provided on the stator mounting surface of casing.Although the patent can be straight by being passed through cooling liquid in seal chamber
Cooling machine winding and iron core are connect, motor radiating condition is improved, but seal chamber is between stator and rotor in the patent,
In axial air-gap, effective air gap is increased, weakens permanent magnetic field, the torque for reducing axial magnetic flux hub motor indirectly is close
Degree.Furthermore the sealing of seal chamber also brings along additional technology difficulty.
Summary of the invention
The purpose of the present invention is overcoming the axial direction electric machine winding poor heat radiation of the prior art, existing winding cooling system increases
Motor axial direction effective air gap, the shortcomings that limiting motor torque density, propose that a kind of winding strengthens the axial magnetic flux wheel hub of heat dissipation
Motor.The present invention can further promote axial magnetic flux hub motor torque density index.
The excellent heat characteristic that the present invention is about ten thousand times of common metal using superconducting flat heat pipe for thermal conductivity rate, it is fixed in conjunction with centre
The axial magnetic flux sandwich topology of sub- both sides rotor, realizes the reinforcing heat dissipation of stator winding, and reaching, which improves stator winding heat transfer, leads to
The purpose of torque density is improved on road.
Axial magnetic flux hub motor of the invention has the sandwich structure of typical intermediate stator both sides rotor.The motor
It is made of casing, stator, rotor, superconducting flat heat pipe, stator support and shaft.In the axial direction, stator clamp is in two rotors
Between.Rotor is fixed on casing, and casing is connected with shaft, and rotor, casing and shaft three rotate together with.Stator and superconduction are flat
Plate heat pipe is fixed on stator support.
For the stator by stator support, Q stator tooth unit and n × Q superconducting flat heat pipe composition, Q is stator slot
Number is the integral multiple of number of motor phases m, and n is positive integer.Q stator tooth unit is uniformly distributed in circumferencial direction.Each stator tooth unit by
One stator tooth iron core and a winding being wrapped on stator tooth iron core are constituted.It is disposed between every two adjacent stators tooth unit
Have a superconducting flat heat pipe, one end of superconducting flat heat pipe and the winding of stator tooth unit are in close contact, superconducting flat heat pipe it is another
One end is contacted with the coolant flow channel in stator support.Coolant flow channel, cooling stream is in axial direction being distributed with inside stator support
The projection overlapping of both road and stator in the axial direction.
The stator tooth iron core is constituted using soft magnetic materials, and silicon steel plate stacking can be used and form or using soft magnetism composite powder
It suppresses at end.When the stator tooth iron core is manufactured using silicon steel plate stacking, silicon steel plate stacking direction and motor axial direction
Vertically, silicon steel sheet is parallel to axial direction.
The superconducting flat heat pipe has the advantages that heat pipe high heat transfer, shape are flat plate.The superconduction
Flat-plate heat pipe relies on circulating phase-change in enclosure space of its interior media in a low pressure even close to vacuum and transmits heat,
Working principle is: when heat is passed to heat pipe from high temperature heat source, the medium in heat pipes heat section is activated immediately, and absorb heat vapour
Change becomes steam, and instant steam flows to the heat pipe other end, condenses into liquid, condensate liquid after releasing latent heat to the cold when reaching the other end
Body flows back into vaporization section through span line, circulating phase-change and realize heat transfer.The superpower thermal coefficient of super heat-conductive pipe is general gold
Ten thousand times or so belonged to.
The present invention has the advantage that
Superconducting flat heat pipe is disposed in the present invention between the two neighboring stator tooth unit of motor, it can be effectively by stator winding
Temperature is transferred in the coolant flow channel of stator support, significantly improves winding radiating condition.
Superconducting flat heat pipe of the invention is not take up axial air-gap space, avoids while improving winding radiating condition
Increase axial effective air gap length.
Superconducting flat heat pipe is used in the present invention, is about the spy of ten thousand times of thermal coefficients of common metal using superconducting flat heat pipe
Property, winding heat is efficiently rapidly transferred to stator coolant flow channel, realizes that winding strengthens heat dissipation.Furthermore superconducting flat heat pipe is close
It spends low, can effectively avoid obviously increasing for motor quality.
The sandwich axial direction electric machine technique of motor of the invention based on traditional intermediate stator both sides rotor, mounting technology are mature
Degree is high.
Detailed description of the invention
The structure chart of Fig. 1 a embodiment of the present invention 1, in figure: 1 casing, 2 rotors, 3 stators, 4 superconducting flat heat pipes, 5 stators
Bracket, 6 shafts；
The main component explosive view of Fig. 1 b embodiment of the present invention 1；
The stator tooth cell schematics of Fig. 2 a embodiment of the present invention 1；
The stator tooth iron core schematic diagram of Fig. 2 b embodiment of the present invention 1；
The stator of Fig. 3 embodiment of the present invention 1 and the assembly relation of superconducting flat heat pipe and stator support；
The superconducting flat heat pipe schematic diagram of Fig. 4 embodiment of the present invention 1.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and detailed description.
Winding of the present invention strengthen heat dissipation axial-flux electric machine include casing 1, rotor 2, stator 3, superconducting flat heat pipe 4,
Stator support 5 and shaft 6, as shown in Figure 1a.The sandwich knot of intermediate stator both sides rotor is used in the axial direction in motor
Structure, motor assembly technology continue to use mature axial direction electric machine technique.In the axial direction, stator 3 is clipped between two rotors 2.Casing
1, the explosive view of rotor 2, stator 3, superconducting flat heat pipe 4 and stator support 5 is as shown in Figure 1 b.Casing 1 is by two 101 Hes of end cap
One shell 102 forms, and rotor 2 is made of annular conducting magnet core 201 and magnet steel 202.Rotor 2 is fixed on casing 1, casing 1
It is connected with shaft 6, rotor 2, casing 1 and 6 three of shaft rotate together with.Stator 3 and superconducting flat heat pipe 4 are fixed on stator support
On 5.
Stator 3 is made of Q stator tooth unit 301, and Q is number of stator slots, is the integral multiple of number of motor phases m.Stator tooth list
301 annular arrangement in a circumferential direction of member, as shown in Figure 2.Each stator tooth unit includes a stator tooth iron core 3011 and twines
Around winding 3012 on the stator teeth.Stator tooth is made of common silicon steel sheet, and multi-disc stator tooth iron core silicon-steel sheet is stacked
Stator tooth iron core.Stator tooth silicon steel plate stacking direction with it is axially vertical, stator tooth silicon steel sheet is parallel with axial direction.
Stator 3 is uniformly constituted in circumferencial direction annular by Q stator tooth unit 301.The inner ring and stator branch of 3 annular of stator
Frame 5 contacts, and axially inside directional spreding has coolant flow channel 501 to stator support 5, and both coolant flow channel 501 and stator 3 are in axial direction
There is overlapping in the projection in direction.As shown in Figure 1, Figure 3.Superconducting flat heat pipe 4 is disposed between two neighboring stator tooth unit 301,
The superconducting flat heat pipe 4 is flat plate.One end of superconducting flat heat pipe 4 is clipped in two adjacent stator tooth units
Between 301, it is in close contact with the winding 3012 of stator tooth unit, it is cold in the other end and stator support of superconducting flat heat pipe 4
But runner 501 is in close contact.Superconducting flat heat pipe has n × Q, and Q is number of stator slots, and n is integer.Stator 3, superconducting flat heat pipe
4 and stator support 5 after the assembly is completed, insulating encapsulating material can be used and reinforce three's entirety encapsulating.
Used superconducting flat heat pipe 4 as shown in figure 4, have the advantages that heat pipe high heat transfer, shape be it is flat plate,
It can be come into full contact with stator winding.For one low pressure of superconducting flat inside heat pipe even close to the enclosure space 401 of vacuum, closing is empty
Between have heat-conducting medium in 401, using the heated vaporization of the heat-conducting medium, the characteristics of liquefaction to the cold, realize efficiently heat exchange rapidly, can
Reach the ultra-high conducting heating rate much higher than common metal.
Claims (5)
- It include casing (1), rotor (2), stator (3), superconducting flat 1. a kind of winding strengthens the axial magnetic flux hub motor of heat dissipation Heat pipe (4), stator support (5) and shaft (6)；In the axial direction, stator (3) is clipped between two rotors (2)；Rotor (2) is solid It is scheduled on casing (1), casing (1) is connected with shaft (6), and rotor (2), casing (1) and shaft (6) three rotate together with, special Sign is: the motor uses intermediate stator (3) in the axial direction, the sandwich structure of both sides rotor (2)；The stator (3) it is made of Q stator tooth unit (301), Q is number of slots, is the positive integer times of number of motor phases m；One stator tooth unit (301) winding (3012) comprising a stator tooth iron core (3011) and winding on it；By Q stator tooth unit 301 in circle Circumferential direction annular is uniformly distributed；The inner ring of stator (3) annular is contacted with stator support (5), and stator support (5) is internal in axial direction It is distributed with coolant flow channel (501), both coolant flow channel (501) and stator (3) are overlapped in the projection of radial direction；It is two neighboring fixed Superconducting flat heat pipe (4) are disposed between sub- tooth unit (301), one end of superconducting flat heat pipe (4) is clipped in two adjacent stators It between tooth unit (301), is in close contact with the winding (3012) of stator tooth unit, the other end of superconducting flat heat pipe (4) and fixed Coolant flow channel (501) in submounts is in close contact.
- 2. axial magnetic flux hub motor described in accordance with the claim 1, it is characterised in that: the superconducting flat heat pipe (4) is It is flat plate, there is heat-conducting medium in internal enclosure space (401).
- 3. axial magnetic flux hub motor described in accordance with the claim 1, it is characterised in that: the superconducting flat heat pipe (4) is altogether There are n × Q, Q is number of stator slots, is the integral multiple of number of motor phases m, n is positive integer.
- 4. axial magnetic flux hub motor described in accordance with the claim 1, it is characterised in that: the stator tooth iron core (3011) by Multiple silicon steel plate stackings form, and laminate that direction is vertical with axial direction, and stator tooth silicon steel sheet is parallel with axial direction.
- 5. axial magnetic flux hub motor described in accordance with the claim 1, it is characterised in that: the stator tooth unit (301), super Sealing is carried out using insulation fixed sealing material between flat guiding plate heat pipe (4) and stator support (5), it is whole to form stator module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611046485.3A CN106452013B (en) | 2016-11-23 | 2016-11-23 | A kind of winding strengthens the axial magnetic flux hub motor of heat dissipation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611046485.3A CN106452013B (en) | 2016-11-23 | 2016-11-23 | A kind of winding strengthens the axial magnetic flux hub motor of heat dissipation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106452013A CN106452013A (en) | 2017-02-22 |
| CN106452013B true CN106452013B (en) | 2019-02-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201611046485.3A Active CN106452013B (en) | 2016-11-23 | 2016-11-23 | A kind of winding strengthens the axial magnetic flux hub motor of heat dissipation |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108418396B (en) * | 2018-03-28 | 2020-02-07 | 中国石油大学(华东) | Stator segmentation monomer excitation divides polar formula high temperature superconducting motor |
| CN111463952A (en) * | 2019-01-21 | 2020-07-28 | 丹阳市昊聪新材料有限公司 | High heat conduction insulation frame structure of low-voltage high-efficiency motor |
| CN110233545B (en) * | 2019-06-21 | 2024-02-02 | 扬州大学 | Cooling and radiating device for multi-stator motor |
| CN111864966B (en) * | 2020-08-03 | 2021-08-10 | 华中科技大学 | Integrated air-cooled axial flux motor |
| CN111900822B (en) * | 2020-08-11 | 2021-10-08 | 华中科技大学 | Integrated air blast heating device and control method thereof |
| CN112688521B (en) * | 2021-01-15 | 2022-03-29 | 东南大学 | Stator hybrid cooling structure of birotor stator yoke-free modular axial motor |
| CN112953120B (en) * | 2021-01-25 | 2023-01-03 | 中国第一汽车股份有限公司 | Motor cooling system, cooling method and motor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110221287A1 (en) * | 2008-11-28 | 2011-09-15 | Fabio Lucchi | Stator section for an axial flux electric machine with liquid cooling system |
| US20110309699A1 (en) * | 2009-02-13 | 2011-12-22 | Isis Innovation Ltd | Electric machine-cooling |
| CN104734425A (en) * | 2015-03-05 | 2015-06-24 | 腾达电动科技镇江有限公司 | Liquid cooling axial magnetic flux motor and method for forming stator inner insulation surface |
| US9071117B2 (en) * | 2009-02-13 | 2015-06-30 | Isis Innovation Ltd. | Electric machine—flux |
-
2016
- 2016-11-23 CN CN201611046485.3A patent/CN106452013B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110221287A1 (en) * | 2008-11-28 | 2011-09-15 | Fabio Lucchi | Stator section for an axial flux electric machine with liquid cooling system |
| US20110309699A1 (en) * | 2009-02-13 | 2011-12-22 | Isis Innovation Ltd | Electric machine-cooling |
| US9071117B2 (en) * | 2009-02-13 | 2015-06-30 | Isis Innovation Ltd. | Electric machine—flux |
| CN104734425A (en) * | 2015-03-05 | 2015-06-24 | 腾达电动科技镇江有限公司 | Liquid cooling axial magnetic flux motor and method for forming stator inner insulation surface |
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| CN106452013A (en) | 2017-02-22 |
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