CN103973040A - Design method of stator cooling waterway applicable to outer rotor hub motor - Google Patents
Design method of stator cooling waterway applicable to outer rotor hub motor Download PDFInfo
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- CN103973040A CN103973040A CN201410228502.XA CN201410228502A CN103973040A CN 103973040 A CN103973040 A CN 103973040A CN 201410228502 A CN201410228502 A CN 201410228502A CN 103973040 A CN103973040 A CN 103973040A
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- motor
- cooling
- outer rotor
- rotor hub
- stator
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Abstract
The invention provides a stator shaft inner cooling pipeline structure which is used for cooling an external rotor wheel hub motor. The structure comprises a motor stator, a stator shaft, a cooling water pipe and an shaft inner cooling pipeline, wherein motor cooling liquid enters a cooling pipeline which is built in the stator shaft through the cooling water pipe; the shaft inner cooling pipeline is axially distributed along the motor shaft and is communicated with two ends of the motor shaft to form a pipeline loop; the cooling liquid flows out of a motor shaft through a water outlet pipe and is capable of taking away various types of loss in the motor operating process through convection heat transfer effect among the cooling liquid, the cooling water channel surface of the motor stator shaft and the inner surface of the motor stator, so that the purpose of cooling the external rotor motor is achieved.
Description
Technical field
The present invention relates to the cooling technical field of external rotor electric machine, relate in particular to a kind of method for designing of stator axis heat radiation internal coolant pipeline configuration.
Background technology
Motor vehicle more and more adopts outer rotor hub motor as direct-driving motor at present, mainly adopt the cooling fluid type of cooling in stator axis for outer rotor hub motor owing to improving power of motor and output torque, mainly contain and adopt radially helical structure for the reflux type of cooling fluid in stator axis.
Adopt radially screw cooling pipe modes coolant duct to draw outlet pipe along motor stator axle circumference spiral and from motor stator axle opposite side.Adopt this structure to introduce outlet pipe at motor stator axle two ends and increased the length of wheel hub motor both side ends, cause the waste of the valuable axial space of motor, adopt the coolant duct of helical structure in the shorter motor shaft of axial dimension, cannot obtain the problem of larger area of dissipation, as shown in Figure 1 simultaneously.
Adopt method of the present invention, have under with low cost, same axial length that area of dissipation is large, the short advantages such as motor axial dimension of effectively utilizing of shaft part cooling water pipe length.Simultaneously in stator axis, axially cooling pipe is simple in structure, easy to process, the different needs that more can require according to heat radiation, flexible design coolant duct width and highly wait technical parameter, raising area of dissipation and heat-sinking capability.
Summary of the invention
Technical problem underlying to be solved by this invention is a kind of interior cooling device method for designing of stator axis of outer rotor hub motor.By facts have proved, implement according to scheme proposed by the invention, not only ensure the temperature rise requirement in outer rotor hub motor running, and can significantly improve the power density of outer rotor hub motor, reduce costs, be conducive to improve power density and the reliability of driving system for electric vehicles.
Motor stator structure of the present invention and the motor stator axle with axial coolant duct, can realize by simple processing technology.Therefore the technical merit to operator and process equipment require relatively lowly, therefore can control effectively to cost.In addition, due to motor stator structure and the similar multiplexing functions that can do to a certain extent of conventional motors stator structure, be connected by interference fit with motor stator with the motor stator axle of axial coolant duct, can significantly reduce installation cost.
The present invention adopts outer rotor hub motor stator axis inside cooling fluid circulating current system vertically to carry out cooling to outer rotor hub motor, accomplish to make full use of motor axial length and motor stator axle surface area, can accomplish to increase cooling fluid to flow area in the motor of little draw ratio, obviously improve the effect of radiating efficiency, be relatively applicable to using in the little draw ratio motors of a class such as outer rotor hub motor.
Can obviously increase the heat-sinking capability of outer rotor hub motor, improve the temperature rising phenomenon in motor operation course, and then significantly improve the power density of outer rotor hub motor, be conducive to the research of electric automobile Direct Driving System miniaturization.
Outer rotor hub motor stator axis internal coolant pipeline of the present invention distributes along motor stator direction of principal axis, in UNICOM's stroke loop, stator axis end, cooling fluid area of dissipation is significantly improved, and make cooling line and external environment completely isolated, be not subject to external environmental interference, make the inner axial cooling system of whole stator axis not need later maintenance, thereby the applicability of system is significantly improved.
Brief description of the drawings
Fig. 1 is a kind of conventional motors stator axis inner radial spiral cooling tube road schematic diagram.
Fig. 2 is a kind of structural representation of the cooling motor stator axle inner shaft of outer rotor hub motor to cooling pipe that can be used for.
Wherein: 1. cooling liquid inlet, 2. outer rotor hub motor stator, 3. motor stator axle internal coolant pipeline, 4. motor stator axle, 5. coolant duct end connects, 6. cooling liquid outlet.
Embodiment
Below will be described in detail the specific embodiment of the present invention with reference to the accompanying drawings.
Outer rotor hub motor stator axis internal coolant operating loop is connected by coolant duct, coolant duct end and outer rotor hub motor stator forms.
Cooling fluid heat loss through convection area of the present invention is made up of jointly motor stator axle internal coolant pipeline 3, the surface of motor stator axle 4 and the inner surface of outer rotor hub motor stator 2, cooling fluid is moved in stator axis internal pipeline, on above-mentioned surface, heat loss through convection phenomenon occurs outer rotor hub motor is carried out to thermolysis.
Its concrete steps are as follows:
A) according to the integral heat sink parameter of the characteristic decision employing motor stator axle internal cooling outer rotor hub motor of the size of all kinds of losses in motor operation course and all kinds of cooling fluids;
B) determine that according to the different physical characteristic of all kinds of cooling fluids, flow velocity and fluid for radiating heat type motor stator axle inner shaft is to parameters such as the height of cooling water channel 3, width, length;
B) determine the diameter of cooling liquid inlet 1 and cooling liquid outlet 6 according to the type of cooling fluid, flow velocity and heat-sinking capability, and retrain according to motor axial dimension and installation processing the axial length of determining cooling liquid inlet 1 and cooling liquid outlet 6.
C) determine that according to fluid mechanics principle motor stator axle inner shaft connects the parameters such as 5 length, width, fillet and radius to coolant duct end.
D) according to the drawing of above result of calculation design motor shaft internal stator axle coolant duct and stator axis;
E) process according to drawing requirement;
F), after motor stator axle 4 and outer rotor hub motor stator 2 machine, the two is adopted to interference fit assembling, and carry out encapsulation process according to the class of insulation of motor with heat-barrier material after assembling completes;
G) after heat-barrier material solidifies completely, outer rotor hub motor stator axis inner shaft completes to cooling device process and assemble.
Claims (2)
1. one kind can be used for the stator axis cooling water channel of outer rotor hub motor, comprise that cooling liquid inlet (1), outer rotor hub motor stator (2), motor stator axle internal coolant pipeline (3), motor stator axle (4), coolant duct end connect (5), cooling liquid outlet (6), is characterized in that: the present invention adopts outer rotor hub motor stator axis inside cooling fluid circulating current system vertically to carry out cooling to outer rotor hub motor.
2. a kind of stator axis cooling water channel that can be used for outer rotor hub motor as claimed in claim 1, is characterized in that, stator axis cooling water channel design procedure is as follows:
1) according to the integral heat sink parameter of the inner outer rotor hub motor of characteristic decision employing motor stator axle of the size of all kinds of losses in motor operation course and all kinds of cooling fluids;
2) determine that according to the different physical characteristic of all kinds of cooling fluids, flow velocity and fluid for radiating heat type motor stator axle inner shaft is to parameters such as the height of cooling water channel (3), width, length;
3) determine the diameter of cooling liquid inlet (1) and cooling liquid outlet (6) according to the type of cooling fluid, flow velocity and heat-sinking capability, and retrain according to motor axial dimension and installation processing the axial length of determining cooling liquid inlet (1) and cooling liquid outlet (6).
4) determine that according to fluid mechanics principle motor stator axle inner shaft connects the parameters such as length, width, fillet and the radius of (5) to coolant duct end.
5) according to the drawing of above result of calculation design motor shaft internal stator axle coolant duct and stator axis;
6) process according to drawing requirement;
7), after motor stator axle (4) and outer rotor hub motor stator (2) machine, the two is adopted to interference fit assembling, and carry out encapsulation process according to the class of insulation of motor with heat-barrier material after assembling completes;
8) after heat-barrier material solidifies completely, outer rotor hub motor stator axis inner shaft completes to cooling device process and assemble.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410228502.XA CN103973040A (en) | 2014-05-27 | 2014-05-27 | Design method of stator cooling waterway applicable to outer rotor hub motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410228502.XA CN103973040A (en) | 2014-05-27 | 2014-05-27 | Design method of stator cooling waterway applicable to outer rotor hub motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103973040A true CN103973040A (en) | 2014-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410228502.XA Pending CN103973040A (en) | 2014-05-27 | 2014-05-27 | Design method of stator cooling waterway applicable to outer rotor hub motor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106026449A (en) * | 2016-05-18 | 2016-10-12 | 中车株洲电机有限公司 | External rotor motor cooling device |
| CN110311513A (en) * | 2019-08-08 | 2019-10-08 | 哈尔滨理工大学 | A kind of hub motor conductive structure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08130854A (en) * | 1994-10-31 | 1996-05-21 | Hitachi Ltd | Ac power generator for motor vehicle |
| CN103701264A (en) * | 2013-12-12 | 2014-04-02 | 大连天元电机股份有限公司 | Water channel cooling device of high-power doubly-fed wind driven generator |
| CN103812259A (en) * | 2014-02-26 | 2014-05-21 | 安徽安凯汽车股份有限公司 | Liquid cooling enclosure of driving motor of electric motor coach |
-
2014
- 2014-05-27 CN CN201410228502.XA patent/CN103973040A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08130854A (en) * | 1994-10-31 | 1996-05-21 | Hitachi Ltd | Ac power generator for motor vehicle |
| CN103701264A (en) * | 2013-12-12 | 2014-04-02 | 大连天元电机股份有限公司 | Water channel cooling device of high-power doubly-fed wind driven generator |
| CN103812259A (en) * | 2014-02-26 | 2014-05-21 | 安徽安凯汽车股份有限公司 | Liquid cooling enclosure of driving motor of electric motor coach |
Non-Patent Citations (1)
| Title |
|---|
| 孙利云: "螺旋形电机水冷系统设计与散热计算", 《中国科技博览》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106026449A (en) * | 2016-05-18 | 2016-10-12 | 中车株洲电机有限公司 | External rotor motor cooling device |
| CN106026449B (en) * | 2016-05-18 | 2018-05-08 | 中车株洲电机有限公司 | External rotor electric machine cooling device |
| CN110311513A (en) * | 2019-08-08 | 2019-10-08 | 哈尔滨理工大学 | A kind of hub motor conductive structure |
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Application publication date: 20140806 |