CN103580422A - Air-cooling heat dissipation structure of permanent magnet synchronous motor stator - Google Patents

Air-cooling heat dissipation structure of permanent magnet synchronous motor stator Download PDF

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Publication number
CN103580422A
CN103580422A CN201210259095.XA CN201210259095A CN103580422A CN 103580422 A CN103580422 A CN 103580422A CN 201210259095 A CN201210259095 A CN 201210259095A CN 103580422 A CN103580422 A CN 103580422A
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CN
China
Prior art keywords
stator
air
heat dissipation
synchronous motor
cooling
Prior art date
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.)
Pending
Application number
CN201210259095.XA
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Chinese (zh)
Inventor
樊成芳
何勤
张闯
周静
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CHENGDU LIANTENG POWER CONTROL TECHNOLOGY Co Ltd
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CHENGDU LIANTENG POWER CONTROL TECHNOLOGY Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by CHENGDU LIANTENG POWER CONTROL TECHNOLOGY Co Ltd filed Critical CHENGDU LIANTENG POWER CONTROL TECHNOLOGY Co Ltd
Priority to CN201210259095.XA priority Critical patent/CN103580422A/en
Publication of CN103580422A publication Critical patent/CN103580422A/en
Pending legal-status Critical Current

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Abstract

The invention discloses an air-cooling heat dissipation structure of a permanent magnet synchronous motor stator. The air-cooling heat dissipation structure of the permanent magnet synchronous motor stator comprises a stator body. The exterior of the stator body is of a regular hexahedron structure or a regular octahedron structure. The stator body is hollow to form a cylindrical cavity. The stator body is formed by overlying stator punching pieces formed by punching. The air-cooling heat dissipation structure of the permanent magnet synchronous motor stator is characterized in that a plurality of air holes are formed in a stator tooth yoke portion of the stator body, the axes of the air holes are parallel to the axis of the stator body, and the air holes penetrate through the stator body. According to the air-cooling heat dissipation structure of the permanent magnet synchronous motor stator, heat is transmitted by the stator body, the number of transmission paths of the heat is reduced, the heat resistance is reduced, the heat dissipation capacity is improved by 2-4 times, the air holes account for the certain size, due to the fact that the stator is not required to be additionally sleeved with a shell, a motor is more compact in structure, and the radial size of the motor is greatly reduced. Due to the fact that a cooling medium is air, the sealing missing requirement of the air is lower than that of cooling liquid, the cooling structure is simple, the manufacturing cost is reduced, maintenance is not required basically in the use process, and the environmental adaptability is high.

Description

The air-cooled heat dissipation structure of permanent-magnetic synchronous motor stator
Technical field
The present invention relates to a kind of stator improvement structure of motor, specifically refer to the air-cooled heat dissipation structure of permanent-magnetic synchronous motor stator.
Background technology
Magneto substitutes excitation winding with permanent magnet and sets up excitation field.Under stable situation, main pole magnetic field is along with rotating magnetic field is synchronously rotated, so rotor speed is also synchronous speed, and the permanent main pole magnetic field maintenance of setting up with permanent magnet of stator rotating magnetic field is relative static, between them, interact and produce electromagnetic torque, drive motors rotates and carries out power conversion.
The radiating mode of at present domestic permagnetic synchronous motor substantially all adopts surperficial naturally cooling or cooling fluid is cooling, wherein the surperficial natural type of cooling is generally the cooling surface area that increases motor, all can be in stator outer cover thermal resistance little, the aluminium shell of good heat dissipation effect, and case surface is also distributed with fin, thermal radiation and the mobile acquisition of air natural by motor housing surface are cooling, do not install other special cooling devices additional, the heat producing in motor operation course passes through iron core, winding, the passages such as shell outwards distribute, radially the long total thermal resistance of motor that causes of heat dissipation channel is larger, more difficult the shedding of heat of motor, thereby cause radiating effect undesirable, but, this radiating mode has simple in structure, substantially need not safeguard, low cost of manufacture, the advantage that environmental suitability is strong, although the natural type of cooling in surface is simple in structure, environmental suitability is strong, but its cooling effect is bad, and there is the shortcoming that causes overall dimension to increase owing to will increasing surface radiating area, the cooling fluid type of cooling is generally water-cooled housing in the outer cover of motor stator, on housing, there is spiral channel or axial water channel, the heat producing in motor operation course is taken away by the cooling fluid circulating in water channel, specific heat of water holds greatly, heat-sinking capability is better, radiating effect in this way better, also there is the shortcomings such as internal structure complexity, leakproof seal requirement raising, manufacturing cost increase, environmental suitability is restricted in this kind of radiating mode simultaneously, cooling effect is good, but its complex structure, keep in repair constantly, environmental suitability is poor.
Summary of the invention
The object of the present invention is to provide the air-cooled heat dissipation structure of permanent-magnetic synchronous motor stator, solve that the thermal resistance that the approach of current permanent-magnetic synchronous motor stator heat radiation is long, total is large, bad, the baroque problem of radiating effect.
Object of the present invention is achieved through the following technical solutions:
The air-cooled heat dissipation structure of permanent-magnetic synchronous motor stator, comprise stator body, stator body outside is positive six posts or positive octagon column structure, its inner hollow forms cylindrical cavity, stator body is overrided to form by stamping forming stator punching, stator tooth yoke portion at described stator body is provided with a plurality of ventilation holes, and the axis of ventilation hole is parallel with the axis of stator body, and a plurality of ventilation holes run through stator body.The external structure of stator body integral body is positive six posts or positive octagon column, for the ease of its shell as whole motor, install and place, adopt positive six posts or positive octagon column structure, also can adopt cylindrical other structure such as grade, the shell that itself can be used as motor is used, and also can carry out hot jacket or cold-pressing assembly with other housings, and the inside of stator body is cavity structure, this cavity is cylinder, and cavity is coaxial with stator body.Stator body forms by stator punching stack is rear, stator punching profile is identical with stator cross section, stator coil can adopt concentrates winding or distributed winding pattern, yoke portion at stator body arranges a plurality of ventilation holes, ventilation hole runs through whole stator body, ventilation hole can be linear, and the axis of its axis and stator body is parallel to each other.When stator winding is worked, the sense of current of stator winding changes repeatedly, can on stator body, form ,Gai magnetic field, magnetic field generation eddy current loss and magnetic hysteresis loss that direction changes repeatedly, produces heat, and this is iron loss; The heat that stator coil produces because of electric current conduction, this is copper loss.Copper loss is directly passed to stator body with contacting of stator by heat by coil, when running up, the iron loss that stator body produces also strengthens thereupon, these heats are discharged by the ventilation hole of stator body, with respect to conventional motors by stator winding, stator case, motor object, the mode of fin heat radiation, the heat of stator winding is directly passed to stator body, by stator body, passed, reduced the path that heat transmits, reduced thermal resistance, the ability of heat radiation has been improved to 2 ~ 4 times, and, ventilation hole has occupied certain volume, owing to not needing to add set of shells in stator outside in addition, make electric machine structure compacter, greatly dwindle motor radial dimension, its coolant is that air so its leak that seal request is low compared with cooling fluid cooling structure, manufacturing cost reduces, it is non-maintaining in use substantially can to realize, and environmental suitability is strong.
The cross section of described ventilation hole is arbitrary shape, and its sidewall equates with the distance of stator punching.
Described ventilation hole is evenly distributed on the sidewall of stator body.
The long-pending sum of described ventilation hole plane of structure be stator body sidewall plane of structure long-pending 30%~55%.Further, as the optimal design of ventilation hole, need to control the long-pending ratio of the total cross-sectional area of ventilation hole and stator body sidewall plane of structure is 30~55:100.
The present invention compared with prior art, has following advantage and beneficial effect:
The air-cooled heat dissipation structure of 1 permanent-magnetic synchronous motor stator of the present invention, the mode by stator winding, stator case, electric machine casing, fin heat radiation with respect to conventional motors, the heat of stator winding is directly passed to stator body, by stator body, passed, reduced the path that heat transmits, reduced thermal resistance, the ability of heat radiation has been improved to 2 ~ 4 times, and, ventilation hole has occupied certain volume, owing to not needing to add set of shells in stator outside in addition, make electric machine structure compacter, greatly dwindle motor radial dimension; Its coolant is that air so its leak that seal request is low compared with cooling fluid cooling structure, manufacturing cost reduces, it is non-maintaining in use substantially can to realize, and environmental suitability is strong;
The air-cooled heat dissipation structure of 2 permanent-magnetic synchronous motor stators of the present invention, simple in structure, processing technology is simpler, and cost is lower;
The air-cooled heat dissipation structure of 3 permanent-magnetic synchronous motor stators of the present invention, easy to assembly, technique is simple, there is no shell and fin, and weight is lighter, and complete machine is with low cost, is suitable for promoting.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Mark and corresponding parts title in accompanying drawing:
1-stator body, 2-stator punching, 3-ventilation hole.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Embodiment
As shown in Figure 1, the air-cooled heat dissipation structure of permanent-magnetic synchronous motor stator of the present invention, comprise stator body 1, the external structure of stator body 1 integral body is positive six posts, for the ease of its shell as whole motor, install and place, also can adopt positive octagon column, cylindrical other structure such as grade, the shell that itself can be used as motor is used, also can carry out hot jacket or cold-pressing assembly with other housings, the inside of stator body 1 is cavity structure, this cavity is cylinder, cavity is coaxial with stator body 1, stator body is by rear formation of stator punching 2 stacks, stator punching profile is identical with stator cross section, stator coil can adopt concentrates winding or distributed winding pattern, a plurality of ventilation holes 3 are set in the yoke portion of stator body 1, ventilation hole 3 runs through whole stator body, ventilation hole 3 is linear, the axis of its axis and stator body is parallel to each other, the long-pending sum of ventilation hole 3 plane of structures be stator body 1 sidewall plane of structure long-pending 30%~55%.
The above, be only preferred embodiment of the present invention, not the present invention done to any pro forma restriction, and any simple modification, the equivalent variations in every foundation technical spirit of the present invention, above embodiment done, within all falling into protection scope of the present invention.

Claims (4)

1. the air-cooled heat dissipation structure of permanent-magnetic synchronous motor stator, comprise stator body (1), stator body (1) outside is positive six posts or positive octagon column structure, its inner hollow forms cylindrical cavity, stator body (1) is overrided to form by stamping forming stator punching (2), it is characterized in that: the stator tooth yoke portion at described stator body (1) is provided with a plurality of ventilation holes (3), the axis of ventilation hole (3) is parallel with the axis of stator body (1), and a plurality of ventilation holes (3) run through stator body (1).
2. the air-cooled heat dissipation structure of permanent-magnetic synchronous motor stator according to claim 1, is characterized in that: the cross section of described ventilation hole (3) is arbitrary shape, and its sidewall equates with the distance of stator punching (2).
3. the air-cooled heat dissipation structure of permanent-magnetic synchronous motor stator according to claim 2, is characterized in that: described ventilation hole (3) is evenly distributed on the sidewall of stator body (1).
4. according to the air-cooled heat dissipation structure of the permanent-magnetic synchronous motor stator described in any one in claims 1 to 3, it is characterized in that: the long-pending sum of described ventilation hole plane of structure be stator body (1) sidewall plane of structure long-pending 30%~55%.
CN201210259095.XA 2012-07-25 2012-07-25 Air-cooling heat dissipation structure of permanent magnet synchronous motor stator Pending CN103580422A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210259095.XA CN103580422A (en) 2012-07-25 2012-07-25 Air-cooling heat dissipation structure of permanent magnet synchronous motor stator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210259095.XA CN103580422A (en) 2012-07-25 2012-07-25 Air-cooling heat dissipation structure of permanent magnet synchronous motor stator

Publications (1)

Publication Number Publication Date
CN103580422A true CN103580422A (en) 2014-02-12

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104935140A (en) * 2015-06-17 2015-09-23 沈阳工业大学 Cooling system of outer rotor permanent magnet synchronous motor used by crane
WO2017161527A1 (en) * 2016-03-24 2017-09-28 Robert Bosch Gmbh Stator lamination and electrical machine
CN109639085A (en) * 2019-01-28 2019-04-16 西安广源机电技术有限公司 A kind of magnet brushless

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07177689A (en) * 1993-12-20 1995-07-14 Fanuc Ltd Motor
CN2738455Y (en) * 2004-09-29 2005-11-02 中国北车集团永济电机厂 Armature stamping for electric machine
CN1784818A (en) * 2003-04-16 2006-06-07 西门子公司 Electric machine having cooled metal laminated stator and rotor cores and windings
CN201409021Y (en) * 2009-05-06 2010-02-17 福建联合动力设备制造有限公司 Stator core with ventilation holes
CN202160021U (en) * 2011-08-23 2012-03-07 浙江泰达微电机有限公司 Stator lamination benefit for heat radiation
CN202260682U (en) * 2011-08-11 2012-05-30 南阳防爆集团股份有限公司 Stator punching sheet with double-row axial air vents uniformly distributed at yoke part
CN202663264U (en) * 2012-07-25 2013-01-09 成都联腾动力控制技术有限公司 Air-cooled heat radiating structure of permanent magnet synchronous motor stator

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07177689A (en) * 1993-12-20 1995-07-14 Fanuc Ltd Motor
CN1784818A (en) * 2003-04-16 2006-06-07 西门子公司 Electric machine having cooled metal laminated stator and rotor cores and windings
CN2738455Y (en) * 2004-09-29 2005-11-02 中国北车集团永济电机厂 Armature stamping for electric machine
CN201409021Y (en) * 2009-05-06 2010-02-17 福建联合动力设备制造有限公司 Stator core with ventilation holes
CN202260682U (en) * 2011-08-11 2012-05-30 南阳防爆集团股份有限公司 Stator punching sheet with double-row axial air vents uniformly distributed at yoke part
CN202160021U (en) * 2011-08-23 2012-03-07 浙江泰达微电机有限公司 Stator lamination benefit for heat radiation
CN202663264U (en) * 2012-07-25 2013-01-09 成都联腾动力控制技术有限公司 Air-cooled heat radiating structure of permanent magnet synchronous motor stator

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104935140A (en) * 2015-06-17 2015-09-23 沈阳工业大学 Cooling system of outer rotor permanent magnet synchronous motor used by crane
WO2017161527A1 (en) * 2016-03-24 2017-09-28 Robert Bosch Gmbh Stator lamination and electrical machine
CN109639085A (en) * 2019-01-28 2019-04-16 西安广源机电技术有限公司 A kind of magnet brushless

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Application publication date: 20140212

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