CN111049320A - Single-phase permanent magnet motor - Google Patents

Single-phase permanent magnet motor Download PDF

Info

Publication number
CN111049320A
CN111049320A CN201911308525.0A CN201911308525A CN111049320A CN 111049320 A CN111049320 A CN 111049320A CN 201911308525 A CN201911308525 A CN 201911308525A CN 111049320 A CN111049320 A CN 111049320A
Authority
CN
China
Prior art keywords
gear
motor
stator
permanent magnet
rotor
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.)
Granted
Application number
CN201911308525.0A
Other languages
Chinese (zh)
Other versions
CN111049320B (en
Inventor
张伟
张磊
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.)
Supersonic Intelligent Technology Zhejiang Co Ltd
Original Assignee
Supersonic Intelligent Technology Zhejiang 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 Supersonic Intelligent Technology Zhejiang Co Ltd filed Critical Supersonic Intelligent Technology Zhejiang Co Ltd
Priority to CN201911308525.0A priority Critical patent/CN111049320B/en
Publication of CN111049320A publication Critical patent/CN111049320A/en
Application granted granted Critical
Publication of CN111049320B publication Critical patent/CN111049320B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • 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
    • H02K1/20—Stationary 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
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil

Abstract

The invention discloses a single-phase permanent magnet motor, comprising: the motor comprises a motor shell, a rotor, a motor shaft and a stator; the rotor is mounted to the motor shaft and rotates relative to the stator; the stator is fixed to the motor housing; the rotor comprises a rotor iron core and a permanent magnet; the permanent magnet is fixed to the rotor core; the stator comprises a stator iron core and a stator coil; the stator coil is wound to the stator core; the stator core includes: a connecting arm and two long arms; one end of the long arm is provided with a polar claw; two ends of the connecting arm are respectively connected with the other ends of the two long arms; the rotor is positioned between the two pole claws; the stator core is provided with a cooling channel for cooling liquid to flow through to cool the stator core; the cooling passage includes: two longitudinal channels formed by the two long arms and a transverse channel formed by the connecting arm; the transverse channel is communicated with the two longitudinal channels; the longitudinal channel extends in a direction parallel to the extension direction of the long arm; the transverse channel extends parallel to the extension of the connecting arm. The invention has the beneficial effect of good heat dissipation effect.

Description

Single-phase permanent magnet motor
Technical Field
The invention relates to a single-phase permanent magnet motor.
Background
A single-phase permanent magnet motor is a kind of single-phase motor. A single-phase permanent magnet motor is generally composed of a stator core, a stator winding, and a permanent magnet rotor. The stator magnetic core is a U-shaped iron core, a pair of pole arms are formed, and a pair of magnetic poles are formed at the tail ends of the pole arms; the stator winding is wound on the pole arm; the permanent magnet rotor is rotatably arranged between the magnetic poles of the iron core.
After the motor runs for a long time, the temperature rises, and the heat dissipation is not timely performed, so that the aging is accelerated, the service life is shortened, and even the damage is caused.
Disclosure of Invention
In order to solve the defects of the prior art, the invention provides the single-phase motor which has a good heat dissipation effect and can dissipate heat in time to cool the motor.
In order to achieve the above object, the present invention adopts the following technical solutions:
a single phase electric motor comprising: the motor comprises a motor shell, a rotor, a motor shaft and a stator; the rotor is mounted to the motor shaft and rotates relative to the stator; the stator is fixed to the motor housing; the rotor comprises a rotor iron core and a permanent magnet; the permanent magnet is fixed to the rotor core; the stator comprises a stator iron core and a stator coil; the stator coil is wound to the stator core; the stator core includes: a connecting arm and two long arms; one end of the long arm is provided with a polar claw; two ends of the connecting arm are respectively connected with the other ends of the two long arms; the rotor is positioned between the two pole claws;
a hollow hole is formed on the motor shell; the hollow hole penetrates through the motor shell along the direction parallel to the rotating axis of the rotor; the hollow hole is positioned between the two long arms;
a single phase electric motor further comprising: the heat dissipation device comprises a gear box body, a first gear, a second gear, an output shaft and a heat dissipation fan; the gear box body is fixed to the motor shell; the first gear and the second gear are arranged in the gear box body; the first gear is meshed with the second gear; the second gear and the heat radiation fan are mounted to the output shaft; the motor shaft drives the first gear to rotate and drives the cooling fan to rotate through the second gear and the output shaft; the rotation axis of the heat radiation fan is positioned in the hollow hole.
Further, the heat radiation fan is located between the gear box body and the motor housing.
Further, the heat radiation fan is a centrifugal fan; the gear box body and the motor shell jointly form a containing area for containing the radiating fan; the receiving area is open in at least two directions in a circumferential direction of a rotational axis of the heat dissipation fan.
Further, the accommodation region is open in three directions in the circumferential direction of the rotational axis of the heat dissipation fan.
Further, the number of stator coils is 2; two stator coils are wound on the two long arms, respectively.
Further, the motor housing includes an inner ring housing; the inner ring shell is a hollow structure to form a hollow hole.
Further, the motor housing further includes: the upper end cover, the lower end cover and the outer ring shell; the upper end cover and the lower end cover are respectively fixed to two ends of the outer ring shell; the outer annular shell surrounds the inner annular shell.
Further, two ends of the inner ring shell are respectively fixed to the upper end cover and the lower end cover.
Further, the motor shaft is a hollow shaft; a heat radiation oil path through which lubricating oil flows to radiate the rotor is formed in the middle of the motor shaft; the motor shaft is inserted into the gear box body; lubricating oil enters the gear box body from the heat dissipation oil path to lubricate the first gear and the second gear; the gear box body is formed with an oil return hole from which lubricating oil flows out.
Further, the first gear is fixed to one end of the motor shaft.
A single phase permanent magnet electric machine comprising: the motor comprises a motor shell, a rotor, a motor shaft and a stator; the rotor is mounted to the motor shaft and rotates relative to the stator; the stator is fixed to the motor housing; the rotor comprises a rotor iron core and a permanent magnet; the permanent magnet is fixed to the rotor core; the stator comprises a stator iron core and a stator coil; the stator coil is wound to the stator core; the stator core includes: a connecting arm and two long arms; one end of the long arm is provided with a polar claw; two ends of the connecting arm are respectively connected with the other ends of the two long arms; the rotor is positioned between the two pole claws;
the stator core is provided with a cooling channel for cooling liquid to flow through to cool the stator core; the cooling passage includes: two longitudinal channels formed by the two long arms and a transverse channel formed by the connecting arm; the transverse channel is communicated with the two longitudinal channels; the longitudinal channel extends in a direction parallel to the extension direction of the long arm; the transverse channel extends parallel to the extension of the connecting arm.
Further, the longitudinal channels extend in a direction perpendicular to the direction of extension of the transverse channels.
Furthermore, the single-phase permanent magnet motor also comprises a liquid supply pipeline for conveying cooling liquid into the cooling channel and a liquid outlet pipeline for discharging the cooling liquid in the cooling channel; the liquid supply pipeline and the liquid outlet pipeline penetrate through the motor shell and are respectively communicated to the two longitudinal channels.
Further, the motor shaft is a hollow shaft; and a heat radiation oil path for lubricating oil to flow through to radiate the rotor is formed in the middle of the motor shaft.
Further, a single phase motor further comprises: the gear box body, the first gear, the second gear and the output shaft; the gear box body is fixed to the motor shell; the first gear and the second gear are arranged in the gear box body; the first gear is meshed with the second gear; the second gear is mounted to the output shaft; the motor shaft drives the first gear to rotate so as to drive the output shaft to rotate.
Further, the motor shaft is inserted into the gear box body; lubricating oil enters the gear box body from the heat dissipation oil path to lubricate the first gear and the second gear; the gear box body is formed with an oil return hole from which lubricating oil flows out.
Further, the first gear is fixed to the motor shaft.
Further, the axis of rotation of the motor shaft is parallel to the axis of rotation of the output shaft.
Furthermore, both ends of the motor shaft extend out of the motor shell; the first gear is fixed to one end of the motor shaft; and the other end of the motor shaft is provided with a rotary joint for supplying oil to the heat-radiating oil circuit.
Further, the rotary joint and the gear box body are located on two sides of the motor housing.
The invention has the beneficial effect that the heat dissipation effect of the motor is good.
The rotor and the stator can be effectively cooled.
Drawings
FIG. 1 is a schematic view of a single phase motor of the present invention;
FIG. 2 is a right side view of the single phase motor of FIG. 1 with the rotary joint removed;
fig. 3 is a schematic view of a rotor and a stator of the single-phase motor of fig. 1.
The single-phase motor comprises a single-phase motor 100, a motor shell 10, an upper end cover 11, a lower end cover 12, an outer ring shell 13, a hollowed hole 141, a rotor 20, a motor shaft 30, a stator 40, a stator core 41, a cooling channel 41a, a connecting arm 411, a transverse channel 411a, a long arm 412, a longitudinal channel 412a, a pole claw 4121, a stator coil 42, a gear box body 51, an oil return hole 511, a first gear 52, a second gear 53, an output shaft 54, a cooling fan 55, an accommodating area 55a, a rotary joint 60, a liquid supply pipeline 71 and a liquid outlet pipeline 72.
Detailed Description
The invention is described in detail below with reference to the figures and the embodiments.
As shown in fig. 1 to 3, a single-phase motor 100 includes: a motor housing 10, a rotor 20, a motor shaft 30, and a stator 40. Specifically, the single-phase motor 100 is a single-phase permanent magnet motor.
The rotor 20 is mounted to the motor shaft 30 and rotates relative to the stator 40. The stator 40 is fixed to the motor housing 10. The rotor 20 includes a rotor core and permanent magnets. Thus, single-phase electric machine 100 may also be referred to as a single-phase permanent magnet machine. The permanent magnet is fixed to the rotor core. The stator 40 includes a stator core 41 and a stator coil 42. The stator coil 42 is wound to the stator core 41.
The stator core 41 includes: a connecting arm 411 and two long arms 412. One end of the long arm 412 is provided with a claw 4121. The connecting arm 411 has both ends connected to the other ends of the two long arms 412, respectively. The rotor 20 is located between the two pole pieces 4121. As a specific embodiment, the number of the stator coils 42 is 2. Two stator coils 42 are wound on the two long arms 412, respectively.
As a preferred embodiment, the motor housing 10 is formed with a hollowed hole 141. The hollow hole 141 penetrates the motor housing 10 in a direction parallel to the rotational axis of the rotor 20. The hollow 141 is located between the two long arms 412.
The single-phase motor 100 further includes: a gear housing 51, a first gear 52, a second gear 53, an output shaft 54, and a heat radiation fan 55.
The gear housing 51 is fixed to the motor housing 10. The first gear 52 and the second gear 53 are provided in the gear housing 51. The first gear 52 meshes with the second gear 53. The second gear 53 and the heat radiation fan 55 are mounted to the output shaft 54. The first gear 52 is fixed to the motor shaft 30. The motor shaft 30 drives the first gear 52 to rotate and drives the output shaft 54 to rotate via the second gear 53. The output shaft 54 outputs power outward. The output shaft 54 rotates the radiator fan 55. One end of the output shaft 54 is used for power output of an external transmission system. A heat radiation fan 55 is mounted to the other end of the output shaft 54. The first gear 52 and the second gear 53 constitute a reduction gear.
The axis of rotation of the motor shaft 30 is parallel to the axis of rotation of the output shaft 54. It is convenient to arrange the radiator fan 55, and the installation structure is simplified by directly installing the radiator fan 55 to the output shaft 54.
The rotation axis of the heat dissipation fan 55 is located in the hollow hole 141. The rotation of the heat dissipation fan 55 drives the airflow through the hollow 141, thereby dissipating heat from the motor. The gap between the two long arms 412 of the stator core 41 is fully utilized for heat dissipation of the motor, the heat dissipation area is increased, the motor is effectively cooled, and particularly, the stator 40 has a good heat dissipation effect.
As a specific embodiment, the heat radiation fan 55 is located between the gear housing 51 and the motor housing 10. The heat radiation fan 55 is a centrifugal fan. The gear housing 51 and the motor housing 10 together form a receiving area 55a that receives the heat radiation fan 55. The accommodation area 55a is open in at least two directions in the circumferential direction of the rotational axis of the heat dissipation fan 55. The rotation axis of the heat dissipation fan 55 is located in the hollow hole 141. The air flow can rapidly pass through the hollow hole 141 and overflow to the open direction through the accommodating area 55a, and the heat dissipation effect is good.
Specifically, the accommodation area 55a is open in three directions in the circumferential direction of the rotational axis of the heat dissipation fan 55. A rectangular coordinate system is established with the X-axis and the Y-axis perpendicular to each other in a plane perpendicular to the heat dissipation fan 55. The accommodation area 55a is open in three directions of positive and negative directions of the X axis and negative directions of the Y axis. The motor shaft 30 is located in the positive direction of the Y axis of the accommodation area 55 a.
As a specific embodiment, the motor housing 10 includes an inner ring housing. The inner ring shell is a hollow structure to form a hollow hole 141. Specifically, the motor housing 10 further includes: an upper end cover 11, a lower end cover 12 and an outer ring shell 13. The upper and lower caps 11 and 12 are fixed to both ends of the outer ring housing 13, respectively. An outer annular shell 13 surrounds the inner annular shell. The two ends of the inner ring shell are respectively fixed to an upper end cover 11 and a lower end cover 12.
In a preferred embodiment, the motor shaft 30 is a hollow shaft. A heat-dissipating oil path through which lubricating oil flows to dissipate heat of the rotor 20 is formed at the middle portion of the motor shaft 30. The motor shaft 30 is inserted into the gear housing 51. The lubricating oil enters the gear housing 51 from the heat radiation oil path to lubricate the first gear 52 and the second gear 53. The gear housing 51 is formed with an oil return hole 511 through which the lubricating oil flows out. The lubricant oil passing through the motor shaft 30 can effectively dissipate heat of the rotor 20.
Both ends of the motor shaft 30 protrude outside the motor housing 10. The first gear 52 is fixed to one end of the motor shaft 30. The other end of the motor shaft 30 is mounted with a rotary joint 60 for supplying oil into the heat-dissipating oil path. The rotary joint 60 can supply oil into the heat-dissipating oil path of the motor shaft 30 while the motor shaft 30 rotates. The rotary joint 60 and the gear housing 51 are located on both sides of the motor housing 10.
As a preferred embodiment, the stator core 41 is formed with a cooling passage 41a through which a cooling liquid flows to cool the stator core 41. The cooling passage 41a includes: two longitudinal channels 412a formed by the two long arms 412, respectively, and a transverse channel 411a formed by the connecting arm 411. The lateral passage 411a communicates with the two longitudinal passages 412 a. The longitudinal channel 412a extends in parallel to the direction of extension of the long arm 412. The transverse channel 411a extends in parallel to the extension of the connecting arm 411. The longitudinal passage 412a extends in a direction perpendicular to the direction in which the lateral passage 411a extends.
The single-phase permanent magnet motor 100 further includes a liquid supply pipe 71 for supplying the cooling liquid into the cooling channel 41a and a liquid outlet pipe 72 for discharging the cooling liquid in the cooling channel 41 a. The liquid supply pipe 71 and the liquid outlet pipe 72 are respectively connected to two longitudinal passages 412a through the motor housing 10.
The coolant enters the cooling passage 41a from the liquid supply pipe 71 to cool the stator core 41, and is discharged from the liquid discharge pipe 72. The coolant directly passes through the stator core 41, which has a better cooling effect on the stator core 41 than a cooling channel provided on the motor housing.
Sealing plug rings are arranged between the liquid supply pipeline 71 and the liquid outlet pipeline 72 and the motor shell 10, so that a sealing effect is realized. An oil seal structure is arranged between the motor shaft 30 and the output shaft 54 and the gear box body 51, and sealing effect is achieved. Other sealing structures may also be used to effect the seal.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by using equivalent alternatives or equivalent variations fall within the scope of the present invention.

Claims (10)

1. A single phase permanent magnet electric machine comprising: the motor comprises a motor shell, a rotor, a motor shaft and a stator; the rotor is mounted to the motor shaft and rotates relative to the stator; the stator is fixed to the motor housing; the rotor comprises a rotor iron core and a permanent magnet; the permanent magnet is fixed to the rotor core; the stator comprises a stator core and a stator coil; the stator coil is wound to the stator core; the stator core includes: a connecting arm and two long arms; one end of the long arm is provided with a polar claw; two ends of the connecting arm are respectively connected with the other ends of the two long arms; the rotor is positioned between the two polar claws;
the stator core is characterized in that a cooling channel for cooling liquid to flow through to cool the stator core is formed in the stator core; the cooling passage includes: two longitudinal channels formed by the two long arms respectively and a transverse channel formed by the connecting arm; the transverse channel is communicated with the two longitudinal channels; the longitudinal channel extends in a direction parallel to the extension direction of the long arm; the transverse channel extends in a direction parallel to the extension of the connecting arm.
2. A single phase permanent magnet electric machine according to claim 1,
the extending direction of the longitudinal channel is perpendicular to the extending direction of the transverse channel.
3. A single phase permanent magnet electric machine according to claim 1,
the single-phase permanent magnet motor also comprises a liquid supply pipeline for conveying cooling liquid into the cooling channel and a liquid outlet pipeline for discharging the cooling liquid in the cooling channel; the liquid supply pipeline and the liquid outlet pipeline penetrate through the motor shell and are respectively communicated to the two longitudinal channels.
4. A single phase permanent magnet electric machine according to claim 1,
the motor shaft is a hollow shaft; and a heat dissipation oil path through which lubricating oil flows to dissipate heat of the rotor is formed in the middle of the motor shaft.
5. A single phase permanent magnet electric machine according to claim 4,
the single-phase permanent magnet machine further comprises: the gear box body, the first gear, the second gear and the output shaft; the gear housing is fixed to the motor housing; the first gear and the second gear are arranged in the gear box body; the first gear is meshed with the second gear; the second gear is mounted to the output shaft; the motor shaft drives the first gear to rotate so as to drive the output shaft to rotate.
6. A single phase permanent magnet electric machine according to claim 5,
the motor shaft is inserted into the gear box body; lubricating oil enters the gear box body from the heat radiation oil path to lubricate the first gear and the second gear; and an oil return hole for lubricating oil to flow out is formed in the gear box body.
7. A single phase permanent magnet electric machine according to claim 5,
the first gear is fixed to the motor shaft.
8. A single phase permanent magnet electric machine according to claim 7,
the axis of rotation of the motor shaft is parallel to the axis of rotation of the output shaft.
9. A single phase permanent magnet electric machine according to claim 7,
both ends of the motor shaft extend out of the motor shell; a first gear fixed to one end of the motor shaft; and the other end of the motor shaft is provided with a rotary joint for supplying oil to the heat-radiating oil way.
10. A single phase permanent magnet electric machine according to claim 9,
the rotary joint and the gear box body are positioned on two sides of the motor shell.
CN201911308525.0A 2019-12-18 2019-12-18 Single-phase permanent magnet motor Active CN111049320B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911308525.0A CN111049320B (en) 2019-12-18 2019-12-18 Single-phase permanent magnet motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911308525.0A CN111049320B (en) 2019-12-18 2019-12-18 Single-phase permanent magnet motor

Publications (2)

Publication Number Publication Date
CN111049320A true CN111049320A (en) 2020-04-21
CN111049320B CN111049320B (en) 2021-09-28

Family

ID=70237571

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911308525.0A Active CN111049320B (en) 2019-12-18 2019-12-18 Single-phase permanent magnet motor

Country Status (1)

Country Link
CN (1) CN111049320B (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0161712A2 (en) * 1984-05-14 1985-11-21 Philips Patentverwaltung GmbH Forcing pump with a wet rotor driving motor
CN101709664A (en) * 2009-12-16 2010-05-19 于佳衣 Internal-combustion engine cooling system based on integrative permanent magnet synchronous motor water pump and electronic speed regulation technology
CN203166677U (en) * 2013-03-22 2013-08-28 商巧玲 Water-cooled motor
CN104578684A (en) * 2013-10-28 2015-04-29 扬州安行机电科技有限公司 Electromagnetic liquid cooling decelerator adopting outer rotor structure
CN106100205A (en) * 2016-08-08 2016-11-09 武汉理工大学 A kind of motor lubricating and cooling
CN107355528A (en) * 2016-05-10 2017-11-17 德昌电机(深圳)有限公司 A kind of electric tool of drive device and the application drive device
CN109936254A (en) * 2017-12-15 2019-06-25 宁波新宏液压有限公司 A kind of retarder motor

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0161712A2 (en) * 1984-05-14 1985-11-21 Philips Patentverwaltung GmbH Forcing pump with a wet rotor driving motor
CN101709664A (en) * 2009-12-16 2010-05-19 于佳衣 Internal-combustion engine cooling system based on integrative permanent magnet synchronous motor water pump and electronic speed regulation technology
CN203166677U (en) * 2013-03-22 2013-08-28 商巧玲 Water-cooled motor
CN104578684A (en) * 2013-10-28 2015-04-29 扬州安行机电科技有限公司 Electromagnetic liquid cooling decelerator adopting outer rotor structure
CN107355528A (en) * 2016-05-10 2017-11-17 德昌电机(深圳)有限公司 A kind of electric tool of drive device and the application drive device
CN106100205A (en) * 2016-08-08 2016-11-09 武汉理工大学 A kind of motor lubricating and cooling
CN109936254A (en) * 2017-12-15 2019-06-25 宁波新宏液压有限公司 A kind of retarder motor

Also Published As

Publication number Publication date
CN111049320B (en) 2021-09-28

Similar Documents

Publication Publication Date Title
KR101131534B1 (en) Arrangement and method for cooling an electrical machine
CN207098863U (en) Enclosed rotary motor and synchronous magnetic resistance motor
US20230107455A1 (en) Motor, motor cooling system, and electric vehicle
CN108880104B (en) Permanent magnet motor cooling system for railway vehicle
US6633098B2 (en) Alternator for use in a vehicle
CN110800191A (en) Stator of an electric machine and cooling device for a stator
ES2702119T3 (en) Permanent magnet motor, refrigeration compressor and air conditioning unit
CN112994355A (en) Air-water cooling high-power permanent magnet traction motor with hanging structure
EP2490320B1 (en) Cooling of permanent magnet electric machine
EP2490323B1 (en) Cooling of permanent magnet electric machine
CN110707843A (en) Motor cooling structure and permanent magnet synchronous motor for electric automobile
CN111864992A (en) Cooling device, motor and wind generating set
CN110768414A (en) Cooling structure of permanent magnet motor
CN111030371B (en) Single-phase motor
CN111049320B (en) Single-phase permanent magnet motor
KR101956021B1 (en) Cooling structure of drive motor
CN215378647U (en) Cooling structure of permanent magnet synchronous motor
JP2005245155A (en) Motor cooling structure
KR20150068224A (en) Cooling structure of drive motor
CN208424048U (en) The motor of high power density
CN102447349A (en) Axial flow air cooled external rotor electric machine
JP2021097427A (en) Rotary electric machine
CN105186760A (en) Mounting structure of motor bearings, and motor
CN108736631A (en) The motor of high power density
EP2602916A1 (en) Cooling of permanent magnet electric machine

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant