CN105553126A - Stator cooling structure of built-in disc type motor - Google Patents
Stator cooling structure of built-in disc type motor Download PDFInfo
- Publication number
- CN105553126A CN105553126A CN201610021895.6A CN201610021895A CN105553126A CN 105553126 A CN105553126 A CN 105553126A CN 201610021895 A CN201610021895 A CN 201610021895A CN 105553126 A CN105553126 A CN 105553126A
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- China
- Prior art keywords
- stator
- cooling structure
- winding
- end cap
- built
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Classifications
-
- 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
- H02K1/12—Stationary parts of the magnetic circuit
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The invention discloses a stator cooling structure of a built-in disc type motor, which comprises a stator winding; the stator winding is embedded into a stator iron core; the stator winding is compressed by magnetic slot wedges; the stator iron core is fixed onto an end cover via beams and fastening screws; heat conduction ceramics are installed at the inner and outer end portions of the stator winding; the heat conduction ceramics contact the end cover; a lip seal and a bearing outer cover are arranged at the axial outside of a central bearing of the end cover; the lip seal and the bearing outer cover are installed via interference fit, thereby realizing the sealing to the bearing; and a water channel cover board is fixed onto the end cover. According to the stator cooling structure disclosed by the invention, the cooling effect is good, the structure is more compact and the power density of the motor is improved; and the stator cooling structure is suitable for the power in fields with strict space requirements such as pure electric vehicle, hybrid electric vehicle and the like.
Description
Technical field
The present invention relates to a kind of built-in disc-type electric motor, be specifically related to a kind of cooling structure of stator of built-in disc-type electric motor.
Background technology
Mostly be permagnetic synchronous motor or the induction machine of radial flux at pure motor that is electronic, field of hybrid electric vehicles application, because conventional radial motor shaft is comparatively large to installation dimension, power density and efficiency are all on the low side, are unfavorable for reducing motor volume and reducing energy consumption.
Conventional water-cooled machine, the single methods for cooling such as general employing support water-cooled or end cap water-cooled, and electronic, mixed power electric motor of automobile degree of protection requires high, in car, installing space is narrow and small, the heat of motor internal, because the capacity of heat transmission of air is poor, sometimes only carry out heat exchange by support water-cooled or end cap water-cooled and often can not in time heat be taken away.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the object of the present invention is to provide a kind of cooling structure of stator of built-in disc-type electric motor, good cooling results.
In order to achieve the above object, the technical solution used in the present invention is:
A kind of built-in disc-type electric motor cooling structure of stator, comprise stator winding 1, stator winding 1 is mounted in stator core 2, and use magnetic slot-seal 10 to compress stator winding 1, stator core 2 is fixed on end cap 3 by crossbeam 8 and holding screw 9, the interior outer end of stator winding 1 is provided with thermal conductive ceramic 4, thermal conductive ceramic 4 and end cap 3 contact, the axis outside of end cap 3 centre bearing is provided with lip packing 5 and bearing end cover 6, lip packing 5 and bearing end cover 6 are installed by interference fit, realize the sealing to bearing, water channel cover plate 7 is fixed on end cap 3.
Described stator winding 1 uses the loose centralized winding rolled off the production line, and shorten End winding length, stator winding 1 carries out vacuum pressure impregnation, adopts C class F insulation.
Described stator core 2 adopts high magnetic permeability, low-loss, ultra-thin silicon steel disc winding to form, stator core 2 eddy current loss under effective reduction high frequency operating mode and magnetic hysteresis loss, an end face of stator core 2 is processed with 4 dovetail grooves, for placing crossbeam 8, be connected with end cap 3 by crossbeam 8, realize the fixing of stator core 2; Another section of stator core 2 is provided with 12 open slots, and magnetic slot-seal 10 is placed at notch place.
The end face of described end cap 3 is provided with swirl type water channel, and its outer circumference surface is provided with water inlet 11 and delivery port 12.
Thermal conductive ceramic 4 is filled between described stator winding 1 and support.
Described end cap 3 adopts aluminum alloy materials.
Beneficial effect of the present invention is: initiatively reduce the wastage aspect, have employed ultra-thin silicon steel sheet and make stator core 2 to reduce iron loss, stator winding 1 adopts thin enamelled wire to reduce high-frequency vortex copper loss, the passive aspect that reduces the wastage, consider disk type electric machine stator end cap 3 water channel design, improve the heat convection ability of electric system; By adopting end cap 3, the support of aluminium alloy, and thermal conductive ceramic 4, heat-conduction epoxy resin etc. are adopted to improve the conducting power of heat-transfer path.Simultaneously, stator winding 1 enamelled wire adopts the paint film that temperature resistant grade is higher, by above measure, disc type electric machine is provided with higher heatproof and upgrades, larger overload can be born, structure is compacter, improves power of motor density, is applicable to the power to the harsh field of space requirement such as pure electronic, hybrid vehicle.
Accompanying drawing explanation
Fig. 1 is the structure chart of the built-in disk type electric machine stator assembly of the present invention.
Fig. 2 is the structure chart of stator winding of the present invention.
Fig. 3 is the structure chart of stator core of the present invention.
Fig. 4 is the structure chart of magnetic slot-seal of the present invention.
Fig. 5 is the structure chart of end cap of the present invention.
Fig. 6 is the structure chart of thermal conductive ceramic of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
As shown in Figure 1, a kind of built-in disc-type electric motor cooling structure of stator, comprise stator winding 1, stator winding 1 is mounted in stator core 2, and use magnetic slot-seal 10 to compress stator winding 1, stator core 2 is fixed on end cap 3 by crossbeam 8 and holding screw 9, the interior outer end of stator winding 1 is provided with thermal conductive ceramic 4, thermal conductive ceramic 4 and end cap 3 contact, the heat of the generation of stator core 2, be transmitted to end cap 3, the heat that stator winding 1 produces is by thermal conductive ceramic 4, part heat conduction is in the cooling jacket of support, a part is by the inner periphery binding face of end cap 3 with thermal conductive ceramic 4, finally be transmitted to end cap 3, by the convection current of swirl type water channel coolant, heat is taken away, simultaneously, stator core 2 and stator winding 1 can heat conduction mutually, the axis outside of end cap 3 centre bearing is provided with lip packing 5 and bearing end cover 6, lip packing 5 and bearing end cover 6 are installed by interference fit, realize the sealing to bearing, water channel cover plate 7 is fixed on end cap 3 by holding screw, crossbeam 8 is inserted in the dovetail groove of stator core 2, by holding screw 9, be fixed on end cap 3, magnetic slot-seal 10 is installed in the groove of stator core 2, realize fixing stator winding 1.
As shown in Figure 2, described stator winding 1 uses the loose centralized winding rolled off the production line, and shortens End winding length, and save end copper, stator winding 1 carries out vacuum pressure impregnation, adopts C class F insulation, meets higher temperature increase requirement.
As shown in Figure 3, Figure 4, described stator core 2 adopts high magnetic permeability, low-loss, ultra-thin silicon steel disc winding to form, stator core 2 eddy current loss under effective reduction high frequency operating mode and magnetic hysteresis loss, an end face of stator core 2 is processed with 4 dovetail grooves, for placing crossbeam 8, by being connected with end cap 3 by crossbeam 8, realize the fixing of stator core 2; Another section of stator core 2 is provided with 12 open slots, and grooved adopts open slot design, is convenient to machine and rolls off the production line, and magnetic slot-seal 10 is placed at notch place, and reduce cogging torque, magnetic slot-seal 10 is installed in the groove of stator core 2, realizes fixing stator winding 1.
The end face of described end cap 3 is provided with swirl type water channel, increases the area of dissipation of water channel, improves radiating effect, its outer circumference surface is provided with water inlet 11 and delivery port 12, as shown in Figure 5.Described end cap 3 adopts aluminum alloy materials.
As shown in Figure 6, fill thermal conductive ceramic 4 between described stator winding 1 and support, between stator winding 1 and end cap 3 inner periphery, the heat transmission that stator winding and stator core produce can be taken away by thermal conductive ceramic 4 faster.
Operation principle of the present invention is: the stator winding 1 in stator connects the three-phase alternating current that inverter exports, produce circular rotating field, in disc type electric machine running, the heat that stator winding 1 and stator core 2 produce, mainly through the mode of conduction, be delivered to end cap 3, then taken away by the water channel cooling fluid in end cap 3.
Although this specification has illustrated and described concrete embodiment, it should be appreciated by those skilled in the art that when not deviating from scope of the present invention, various replacement or equivalent realization can substitute these shown and described concrete embodiments.The application is intended to cover the various concrete embodiment that any change and this specification are discussed.Therefore the present invention is only by claim and equivalents thereof.
Claims (6)
1. a built-in disc-type electric motor cooling structure of stator, comprise stator winding (1), it is characterized in that: stator winding (1) is mounted in stator core (2), and use magnetic slot-seal (10) to compress stator winding (1), stator core (2) is fixed on end cap (3) by crossbeam (8) and holding screw (9), the interior outer end of stator winding (1) is provided with thermal conductive ceramic (4), thermal conductive ceramic (4) and end cap (3) contact, the axis outside of end cap (3) centre bearing is provided with lip packing (5) and bearing end cover (6), lip packing (5) and bearing end cover (6) are installed by interference fit, realize the sealing to bearing, water channel cover plate (7) is fixed on end cap (3).
2. the built-in disc-type electric motor cooling structure of stator of one according to claim 1, it is characterized in that: described stator winding (1) uses the loose centralized winding rolled off the production line, shorten End winding length, stator winding (1) carries out vacuum pressure impregnation, adopts C class F insulation.
3. the built-in disc-type electric motor cooling structure of stator of one according to claim 1, it is characterized in that: described stator core (2) adopts high magnetic permeability, low-loss, ultra-thin silicon steel disc winding to form, reduce stator core (2) eddy current loss under high frequency operating mode and magnetic hysteresis loss, an end face of stator core (2) is processed with 4 dovetail grooves, for placing crossbeam (8), be connected with end cap (3) by crossbeam (8), realize the fixing of stator core (2); Another section of stator core (2) is provided with 12 open slots, and magnetic slot-seal (10) is placed at notch place.
4. the built-in disc-type electric motor cooling structure of stator of one according to claim 1, it is characterized in that: the end face of described end cap (3) is designed with swirl type water channel, its outer circumference surface is designed with water inlet (11) and delivery port (12).
5. the built-in disc-type electric motor cooling structure of stator of one according to claim 1, is characterized in that: fill thermal conductive ceramic (4) between described stator winding (1) and support.
6. the built-in disc-type electric motor cooling structure of stator of one according to claim 1, is characterized in that: described end cap (3) adopts aluminum alloy materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610021895.6A CN105553126A (en) | 2016-01-13 | 2016-01-13 | Stator cooling structure of built-in disc type motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610021895.6A CN105553126A (en) | 2016-01-13 | 2016-01-13 | Stator cooling structure of built-in disc type motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105553126A true CN105553126A (en) | 2016-05-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610021895.6A Pending CN105553126A (en) | 2016-01-13 | 2016-01-13 | Stator cooling structure of built-in disc type motor |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106655563A (en) * | 2016-12-01 | 2017-05-10 | 华中科技大学 | Motor cooling structure and non-casing motor with same |
| CN108448822A (en) * | 2018-05-15 | 2018-08-24 | 华中科技大学 | A kind of disk type electric machine stator water-cooling structure and motor |
| CN108471177A (en) * | 2018-05-25 | 2018-08-31 | 明程电机技术（深圳）有限公司 | Disk type electric machine stator |
| CN108808896A (en) * | 2018-07-06 | 2018-11-13 | 金华市壹维科技有限公司 | Segmented armature motor stator and its manufacturing process |
| CN108900056A (en) * | 2018-08-31 | 2018-11-27 | 核心驱动科技（金华）有限公司 | A kind of disc type core structure and disc type electric machine |
| CN110535292A (en) * | 2018-05-23 | 2019-12-03 | 上海鸣志电器股份有限公司 | A kind of low-temperature lifting motor structure |
| CN111682661A (en) * | 2020-06-08 | 2020-09-18 | 齐鲁工业大学 | Disk type motor based on dovetail slot wedge cooling system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201928095U (en) * | 2011-01-27 | 2011-08-10 | 深圳飞能能源有限公司 | Disk type electric machine stator |
| CN102396134A (en) * | 2009-02-13 | 2012-03-28 | Isis创新有限公司 | Electric machine - cooling |
| CN202334060U (en) * | 2011-04-29 | 2012-07-11 | 国电联合动力技术(宜兴)有限公司 | Composite slot wedge of rotor for variable-frequency motor |
| CN105186813A (en) * | 2015-09-22 | 2015-12-23 | 河南速达电动汽车科技有限公司 | Flame-proof water cooling permanent magnetism synchronization disc motor |
-
2016
- 2016-01-13 CN CN201610021895.6A patent/CN105553126A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102396134A (en) * | 2009-02-13 | 2012-03-28 | Isis创新有限公司 | Electric machine - cooling |
| CN201928095U (en) * | 2011-01-27 | 2011-08-10 | 深圳飞能能源有限公司 | Disk type electric machine stator |
| CN202334060U (en) * | 2011-04-29 | 2012-07-11 | 国电联合动力技术(宜兴)有限公司 | Composite slot wedge of rotor for variable-frequency motor |
| CN105186813A (en) * | 2015-09-22 | 2015-12-23 | 河南速达电动汽车科技有限公司 | Flame-proof water cooling permanent magnetism synchronization disc motor |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106655563A (en) * | 2016-12-01 | 2017-05-10 | 华中科技大学 | Motor cooling structure and non-casing motor with same |
| CN106655563B (en) * | 2016-12-01 | 2018-10-26 | 华中科技大学 | A kind of motor cooling and the inorganic shell motor with the structure |
| CN108448822A (en) * | 2018-05-15 | 2018-08-24 | 华中科技大学 | A kind of disk type electric machine stator water-cooling structure and motor |
| CN108448822B (en) * | 2018-05-15 | 2019-08-30 | 华中科技大学 | A kind of disk type electric machine stator water-cooling structure and motor |
| CN110535292A (en) * | 2018-05-23 | 2019-12-03 | 上海鸣志电器股份有限公司 | A kind of low-temperature lifting motor structure |
| CN108471177A (en) * | 2018-05-25 | 2018-08-31 | 明程电机技术（深圳）有限公司 | Disk type electric machine stator |
| CN108808896A (en) * | 2018-07-06 | 2018-11-13 | 金华市壹维科技有限公司 | Segmented armature motor stator and its manufacturing process |
| CN108900056A (en) * | 2018-08-31 | 2018-11-27 | 核心驱动科技（金华）有限公司 | A kind of disc type core structure and disc type electric machine |
| CN108900056B (en) * | 2018-08-31 | 2020-10-27 | 浙江盘毂动力科技有限公司 | Disc type iron core structure and disc type motor |
| CN111682661A (en) * | 2020-06-08 | 2020-09-18 | 齐鲁工业大学 | Disk type motor based on dovetail slot wedge cooling system |
| CN111682661B (en) * | 2020-06-08 | 2021-12-24 | 齐鲁工业大学 | Disk type motor based on dovetail slot wedge cooling system |
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Application publication date: 20160504 |
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