CN113746232A - Mixed cooling double-rotor single-stator disc type permanent magnet motor - Google Patents
Mixed cooling double-rotor single-stator disc type permanent magnet motor Download PDFInfo
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- CN113746232A CN113746232A CN202010478004.6A CN202010478004A CN113746232A CN 113746232 A CN113746232 A CN 113746232A CN 202010478004 A CN202010478004 A CN 202010478004A CN 113746232 A CN113746232 A CN 113746232A
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- stator
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- radial
- cooling
- permanent magnet
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- 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
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
-
- 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
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
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- 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
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/32—Rotating 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
- H02K16/00—Machines with more than one rotor or stator
- H02K16/02—Machines with one stator and two or more rotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
-
- 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
- H02K9/197—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil in which the rotor or stator space is fluid-tight, e.g. to provide for different cooling media for rotor and stator
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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
Abstract
The invention discloses a hybrid cooling double-rotor single-stator disc type permanent magnet motor, and relates to the field of motors. The disc type permanent magnet motor has high power density, and the stator core is made of materials with good thermal conductivity or devices such as a cooling fan are additionally arranged at present, so that the overall weight of the motor can be increased, and the disc type permanent magnet motor is not suitable for the fields of electric automobiles and aerospace with light weight application. The invention comprises a stator and a left and right double rotors, wherein the stator comprises an annular stator support frame and rib plates uniformly distributed in a surrounding manner, a fan-shaped magnetic pole is arranged between the adjacent rib plates, the stator support frame is provided with a circumferential cooling channel, each rib plate is provided with a radial cooling channel and communicated with the circumferential cooling channel, and a continuous cooling pipeline is embedded in the cooling channel; the periphery of the left rotor and the right rotor is provided with an annular cover plate used for sealing the motor, and the left rotor and the right rotor and the annular cover plate are provided with ventilation holes which are penetrated through from inside to outside. The air cooling and the liquid cooling are adopted for mixed cooling, the whole structure of the motor is compact, the weight of the motor is light, the cooling effect is good, and the light application is effectively realized.
Description
Technical Field
The invention relates to the field of motors, in particular to a mixed cooling double-rotor single-stator disc type permanent magnet motor.
Background
At present, the traditional motor has the defects of large volume, low efficiency and the like, and the type selection in some fields is limited. The disc type permanent magnet motor has the advantages of small volume, light weight, high efficiency, large torque density and the like, and is suitable for the fields of electric automobiles, aerospace and the like which have strict requirements on the performance of the motor. Disc permanent magnet machines, also known as axial flux machines, have an air gap field distributed axially. In order to overcome the problems of unilateral magnetic pull force and the like, the middle stator double-side rotor and the middle rotor double-side stator are the most widely applied axial disc type permanent magnet motor structures. In the fields of electric automobiles and aviation, motors are used as the core of driving, and attract extensive attention and research.
During the operation of the axial motor, the stator core and the coil generate a large amount of heat. The disc type permanent magnet motor has high power density, so that higher requirements are put forward on the heat dissipation capacity of the motor. In order to improve the heat dissipation capability of the motor, a widely adopted method is to select a material with good heat conductivity as a stator core, or add a heat dissipation fan and other devices. However, this method increases the overall structural weight of the motor, and is not suitable for the field of work requiring light weight.
Disclosure of Invention
The technical problem to be solved and the technical task to be solved by the invention are to perfect and improve the prior technical scheme, and provide a mixed cooling double-rotor single-stator disc type permanent magnet motor, so as to effectively improve the heat dissipation effect under the condition of meeting the requirement of light weight. Therefore, the invention adopts the following technical scheme.
A mixed cooling double-rotor single-stator disc type permanent magnet motor comprises a stator, a left rotor positioned on the left side of the stator and a right rotor positioned on the right side of the stator, wherein the stator comprises an annular stator support frame positioned in the radial middle of the stator and a plurality of radial ribbed plates which are uniformly distributed in a surrounding manner and connected to the periphery of the stator support frame, the ribbed plates are made of non-magnetic conductive materials, fan-shaped magnetic poles are arranged between adjacent ribbed plates, and the ribbed plates are outward in the radial direction and connected with a magnetic pole pressing plate; the stator support frame is provided with circumferential cooling channels, each rib plate is provided with a radial cooling channel and communicated with the circumferential cooling channels, the circumferential cooling channels and the radial cooling channels are embedded into continuous cooling pipelines, and liquid cooling media are injected into the cooling pipelines; an annular cover plate for sealing the motor is arranged between the peripheries of the left rotor and the right rotor in the axial direction, a motor running clearance is reserved between the inner side surface of the annular cover plate and the periphery of the stator, and the left rotor, the right rotor and the annular cover plate are all provided with ventilation holes which penetrate through the inside and the outside; the left rotor and the right rotor respectively comprise a rotor core, magnetic steel and a fixing piece, and the magnetic steel is in close contact with the rotor core through the fixing piece. The rotors are arranged on the two sides of the stator, and an air cooling and liquid cooling mixed cooling mode is adopted, the rotors and the annular cover plate are provided with vent holes, air flow can flow into air gaps from the vent holes and then flow out from the vent holes of the annular cover plate, and complete air path circulation is formed; can lead to cooling liquid in the cooling channel of stator support frame and floor, through going into the liquid mouth, get into the stator support frame, flow in the floor, the fan-shaped magnetic pole of direct cooling, the cooling efficiency of motor has been improved to the mode of hybrid cooling, the weight of motor has also been alleviateed to a certain extent, overall structure part is small in quantity, compact structure, the hybrid cooling mode is efficient, the heat-sinking capability is good, the heat that rotor and stator inside produced can effectively be taken away, effectively promote the cooling effect under the requirement of satisfying the lightweight, the motor overall structure is compact reasonable, can effectively realize the lightweight and use.
As a preferable technical means: the radial cooling channel on each ribbed plate is bent for a plurality of times at the radial inner side and the radial outer side of the stator, and a plurality of radial cooling channel sections which are parallel in the axial direction of the stator are formed on each ribbed plate. The flowing range of the liquid cooling medium is enlarged, and the cooling effect is better improved.
As a preferable technical means: the cooling pipeline comprises a radial pipeline positioned on the ribbed plate and a circumferential pipeline positioned on the stator support frame, the circumferential pipeline is arranged in a circumferential pipeline groove in the side wall of the central hole of the stator support frame, and the radial pipeline is arranged in a side pipeline groove on the ribbed plate. The mode of injecting the liquid cooling medium in the pipeline is adopted, the structural complication and the assembly difficulty caused by the fact that the liquid cooling medium is directly injected into the inner hole cooling channels of the stator support frame and the rib plate are avoided, and the leakage probability of the liquid cooling medium is reduced.
As a preferable technical means: the ribbed plate and the cooling channel therein, the stator support frame and the cooling channel therein are cast integrally or printed integrally in a 3D mode. Through the integrated casting or the additive manufacturing mode, the processing and manufacturing cost can be effectively reduced, and the integration degree is high.
As a preferable technical means: the fan-shaped magnetic pole supporting frame is characterized in that rib plate connecting grooves corresponding to the number of rib plates are formed in the periphery of the stator supporting frame, the rib plates are connected in the rib plate connecting grooves in a positioning mode at the radial inner side of the stator, magnetic pole pressing plates are arranged at the radial outer side of the stator of each rib plate to limit radial outward movement of the fan-shaped magnetic poles, and the fan-shaped magnetic poles are limited and fixed at the radial inner side of the stator supporting frame. The positioning connection of the rib plates and the limiting fixation of the fan-shaped magnetic poles are effectively realized.
As a preferable technical means: left rotor and right rotor all include rotor core, the magnet steel of circumference equipartition and the mounting that is used for fixed magnet steel to be located the magnet steel in the radial inside and outside both sides of rotor and circumference left and right sides on rotor core, the rotor core of left rotor and right rotor all rotationally connect respectively on the bearing shelves at stator support frame axial both ends through central bearing. The rotatable structure of the rotor is effectively realized.
As a preferable technical means: the magnetic steel is provided with slopes at the radial inner side and the radial outer side, is compressed by fixing pieces at the radial inner side and the radial outer side as well as the circumferential left side and the circumferential right side and is connected and fixed in a magnetic steel groove of the rotor core through bolts on the fixing pieces, the radial outer side of each magnetic steel is provided with one fixing piece, and the radial inner sides of every two adjacent magnetic steels share one fixing piece; two circumferential sides of every two adjacent magnetic steels share one fixing piece. The structure is optimized, and the number of the fixing pieces can be effectively reduced.
As a preferable technical means: each magnetic steel is formed by splicing a plurality of small magnetic steel bodies through insulating glue. The eddy current loss of the magnetic steel can be effectively reduced.
As a preferable technical means: the running clearance of the motor is more than 2 mm; the annular cover plate is fixed on the inner side step of the rotor core through bolt connection, and the peripheral surface of the annular cover plate is flush with the peripheral surface of the rotor core. The fixed structure of the annular cover plate can effectively realize the fixed positioning of the annular cover plate, and the annular cover plate can not touch the periphery of the stator when the operation clearance of the motor can effectively ensure the rotation of the double rotors.
As a preferable technical means: the axial section of the magnetic pole pressing plate is in a dovetail shape, the sector magnetic poles and the rib plates which are uniformly distributed in the circumferential direction are radially compressed, each sector magnetic pole comprises a stator core and a stator winding, and the stator core is provided with dovetail structures at two axial sides of the stator; the stator iron core is formed by laminating silicon steel sheets or by pressing iron powder. The dovetail structure can effectively realize the limit with adjacent elements.
Has the advantages that: through the inside cooling of liquid cooling medium and the forced air cooling's of ventilation hole mixed cooling structure, can effectively take away the heat that rotor and stator inside produced, can effectively promote the cooling effect under the condition that does not increase the motor volume, motor overall structure is compact reasonable, and the cooling radiating effect is good, can effectively realize the lightweight and use.
Drawings
Fig. 1 is an axial cross-sectional schematic view of the present invention.
Fig. 2 is a schematic view of the stator structure of the present invention.
Fig. 3 is a schematic view of the connection between the stator support frame and the rib plate of the present invention.
Figure 4 is a schematic view of a sector pole of the present invention.
Fig. 5 is a partial schematic view of a rotor of the present invention.
Fig. 6 is a schematic view of the structure of the cooling duct of the present invention.
In the figure: 1-a stator support frame; 2-a rib plate; 3-an annular shroud plate; 4-circumferential cooling channels; 5-radial cooling channels; 6-magnetic pole pressing plate; 7-sector magnetic pole; 8-rotor core; 9-magnetic steel; 10-a fixing member; 11-a bearing; 12-cooling duct, 101-ribbed plate connecting groove; 102-circumferential pipe grooves; 201-side pipe grooves; 701-a stator core; 702-stator winding.
Detailed Description
The technical scheme of the invention is further explained in detail by combining the drawings in the specification.
As shown in fig. 1-6, a hybrid cooling double-rotor single-stator disc permanent magnet motor comprises a stator, a left rotor positioned on the left side of the stator, and a right rotor positioned on the right side of the stator, wherein the stator comprises an annular stator support frame 1 positioned in the radial middle of the stator, and a plurality of radial ribbed plates 2 uniformly distributed around and connected to the periphery of the stator support frame 1, the ribbed plates 2 are made of non-magnetic conductive materials, fan-shaped magnetic poles 7 are arranged between adjacent ribbed plates 2, and the ribbed plates 2 are outward in the radial direction and connected with a magnetic pole pressing plate 6; the stator support frame 1 is provided with a circumferential cooling channel 4, each rib plate 2 is provided with a radial cooling channel 5 and communicated with the circumferential cooling channel 4, continuous cooling pipelines 12 are embedded in the circumferential cooling channel 4 and the radial cooling channels 5, and liquid cooling media are injected in the cooling pipelines; an annular cover plate 3 for sealing the motor is arranged between the peripheries of the left rotor and the right rotor in the axial direction, a motor running clearance is reserved between the inner side surface of the annular cover plate 3 and the periphery of the stator, and the left rotor, the right rotor and the annular cover plate 3 are all provided with ventilation holes which penetrate through the inside and the outside; the rotor comprises a rotor core 8, magnetic steel 9 and a fixing piece 10, wherein the magnetic steel 9 is in close contact with the rotor core 8 through the fixing piece 10.
In order to better improve the cooling effect, the radial cooling channels 5 on each rib plate 2 are bent for multiple times at the radial inner side and the radial outer side of the stator, and 4 radial cooling channel 5 sections which are parallel in the axial direction of the stator are formed on each rib plate 2. The flowing range of the liquid cooling medium is enlarged, and the cooling effect is better improved.
In order to reduce the structural complexity, the cooling duct 12 comprises a radial duct on the rib plate 2 and a circumferential duct on the stator support frame 1, the circumferential duct is welded in a circumferential duct groove 102 on the side wall of the central hole of the stator support frame 1, and the radial duct is welded in a side duct groove 201 on the rib plate 2. The mode of injecting the liquid cooling medium in the pipeline is adopted, the structural complication and the assembly difficulty caused by the fact that the liquid cooling medium is directly injected into the inner hole cooling channels of the stator support frame 1 and the ribbed plate 2 are avoided, and the leakage probability of the liquid cooling medium is reduced.
In order to realize the positioning connection of the ribbed plates 2 and the limiting fixation of the fan-shaped magnetic poles 7, ribbed plate connecting grooves 101 corresponding to the number of the ribbed plates 2 are arranged on the periphery of the stator supporting frame 1, the ribbed plates 2 are positioned and connected in the ribbed plate connecting grooves 101 at the radial inner side part of the stator, magnetic pole pressing plates 6 are arranged at the radial outer side part of the stator of the ribbed plates 2 to limit the radial outward movement of the fan-shaped magnetic poles 7, and the fan-shaped magnetic poles 7 are limited and fixed at the radial inner side part through the stator supporting frame 1. Effectively realize the location of floor 2 and the spacing fixed of fan-shaped magnetic pole 7.
In order to realize the rotatable structure of rotor, left rotor and right rotor all include rotor core 8, the magnet steel 9 of circumference equipartition and the mounting 10 that is used for fixing being located magnet steel 9 of magnet steel 9 in the radial inside and outside both sides of rotor and circumference left and right sides on rotor core 8, and rotor core 8 of left rotor and right rotor all rotationally connects respectively on the 11 shelves of bearing at 1 axial both ends of stator support frame through central bearing 11. The rotatable structure of the rotor is effectively realized.
In order to reduce the number of the fixing pieces 10, the magnetic steels 9 are provided with slopes at the radial inner side and the radial outer side thereof, the magnetic steels are compressed by the fixing pieces 10 at the radial inner side and the radial outer side thereof as well as the circumferential left side and the circumferential right side thereof and are connected and fixed in the magnetic steel grooves of the rotor core 8 through bolts on the fixing pieces 10, the radial outer side of each magnetic steel 9 is provided with one fixing piece 10, and the radial inner sides of every two adjacent magnetic steels 9 share one fixing piece 10; two circumferential sides of every two adjacent magnetic steels 9 share one fixing piece 10. The structure is optimized, and the number of the fixing pieces 10 can be effectively reduced.
In order to reduce the eddy current loss of the magnetic steel 9, each magnetic steel 9 is formed by splicing a plurality of small magnetic steel bodies through insulating glue. The eddy current loss of the magnetic steel 9 can be effectively reduced.
In order to realize the positioning and fixing of the annular cover plate 3, the annular cover plate 3 is fixed on the inner side step of the rotor core 8 through bolt connection, and the outer peripheral surface of the annular cover plate 3 is flush with the outer peripheral surface of the rotor core 8. The fixing structure of the annular housing plate 3 can effectively realize the positioning and fixing of the annular housing plate 3.
In order to limit adjacent elements, the axial section of the magnetic pole pressing plate 6 is in a dovetail shape, the sector magnetic poles 7 and the rib plates 2 which are uniformly distributed in the circumferential direction are radially compressed, the sector magnetic poles 7 comprise stator cores 701 and stator windings 702, and the stator cores 701 are provided with dovetail structures on two axial sides of the stator. The dovetail structure is simple, and the limit between the dovetail structure and the adjacent element can be effectively realized.
The rotors are arranged on the two sides of the stator, and an air cooling and liquid cooling mixed cooling mode is adopted, the iron core of the rotor and the annular cover plate 3 are provided with air holes, air flow can flow into air gaps from the air holes and then flow out from the air holes of the annular cover plate 3, and complete air path circulation is formed; can lead to cooling liquid in stator support frame 1 and rib plate 2's the cooling channel, through going into the liquid mouth, get into stator support frame 1, flow in rib plate 2, directly cool off fan-shaped magnetic pole 7, the cooling efficiency of motor has been improved to the mixed cooling's mode, the weight of motor has also been alleviateed to a certain extent, overall structure part is small in quantity, compact structure, mixed cooling mode is efficient, the heat-sinking capability is good, the heat that rotor and stator inside produced can effectively be taken away, effectively promote the cooling effect under the condition that does not increase the motor volume, motor overall structure is compact reasonable, can effectively realize the lightweight and use.
In this example, in order to reduce the manufacturing cost, the rib plate 2 and the cooling channel therein, and the stator support frame 1 and the cooling channel therein may be replaced by an integral casting or 3D printing additive manufacturing method. Through the integrated casting or the additive manufacturing mode, the processing and manufacturing cost can be effectively reduced, and the integration degree is high.
In this embodiment, the stator core 701 is formed by laminating silicon steel sheets, or may be formed by pressing iron powder.
In this example, the pole pressing plate 6 and the rib plate 2 are fixed by bolts.
The hybrid cooling double-rotor single-stator disc type permanent magnet motor shown in the above fig. 1-6 is a specific embodiment of the present invention, has shown the outstanding substantive features and significant progress of the present invention, and can be modified equivalently in shape, structure and the like according to the practical use requirements and under the teaching of the present invention, and is within the protection scope of the present solution.
Claims (10)
1. The utility model provides a mixed cooling birotor list stator disk permanent-magnet machine which characterized in that: the stator comprises an annular stator support frame (1) positioned in the radial middle of the stator, and a plurality of radial ribbed plates (2) which are uniformly distributed in a surrounding manner and connected to the periphery of the stator support frame (1), wherein the ribbed plates (2) are made of non-magnetic conducting materials, fan-shaped magnetic poles (7) are arranged between the adjacent ribbed plates (2), and the ribbed plates (2) are outward in the radial direction and are connected with a magnetic pole pressing plate (6); the stator support frame (1) is provided with circumferential cooling channels (4), each rib plate (2) is provided with a radial cooling channel (5) and communicated with the circumferential cooling channels (4), continuous cooling pipelines (12) are embedded into the circumferential cooling channels (4) and the radial cooling channels (5), and liquid cooling media are injected into the cooling pipelines; an annular cover plate (3) used for sealing the motor is arranged between the peripheries of the left rotor and the right rotor in the axial direction, a motor running clearance is reserved between the inner side surface of the annular cover plate (3) and the periphery of the stator, and the left rotor, the right rotor and the annular cover plate (3) are respectively provided with an air vent which penetrates through the inside and the outside; the left rotor and the right rotor respectively comprise a rotor iron core (8), magnetic steel (9) and a fixing piece (10), and the magnetic steel (9) is in close contact with the rotor iron core (8) through the fixing piece (10).
2. A hybrid cooled dual rotor single stator disc permanent magnet machine according to claim 1, wherein: the radial cooling channel (5) on each ribbed plate (2) is bent for a plurality of times at the radial inner side and the radial outer side of the stator, and a plurality of radial cooling channel (5) sections which are parallel to the axial direction of the stator are formed on each ribbed plate (2).
3. A hybrid cooled dual rotor single stator disc permanent magnet machine according to claim 2, wherein: the cooling pipeline (12) comprises a radial pipeline positioned on the ribbed plate (2) and a circumferential pipeline positioned on the stator support frame (1), the circumferential pipeline is arranged in a circumferential pipeline groove (102) on the side wall of a central hole of the stator support frame (1), and the radial pipeline is arranged in a side pipeline groove (201) on the ribbed plate (2).
4. A hybrid cooled dual rotor single stator disc permanent magnet machine according to claim 2, wherein: the ribbed plate (2) and the cooling channel therein, and the stator support frame (1) and the cooling channel therein are integrally cast or integrally printed in a 3D mode.
5. A hybrid cooled dual rotor single stator disc permanent magnet machine according to claim 2, wherein: the periphery of stator support frame (1) be equipped with floor spread groove (101) that correspond with floor (2) quantity, floor (2) in the radial inside position location of stator connect in floor spread groove (101), floor (2) be equipped with magnetic pole clamp plate (6) in the radial outside position of stator in order to restrict fan-shaped magnetic pole (7) and radially move outward, fan-shaped magnetic pole (7) pass through stator support frame (1) spacing fixed in radial inside position.
6. A hybrid cooled dual rotor single stator disc permanent magnet machine according to claim 1, wherein: left rotor and right rotor all include rotor core (8), on rotor core (8) the magnet steel (9) of circumference equipartition and be used for fixed magnet steel (9) lie in magnet steel (9) at the radial inside and outside both sides of rotor and circumference left and right sides mounting (10), rotor core (8) of left rotor and right rotor all rotationally connect respectively in bearing (11) shelves at stator support frame (1) axial both ends through central bearing (11).
7. A hybrid cooled dual rotor single stator disc permanent magnet machine according to claim 6, wherein: the magnetic steels (9) are provided with slopes at the radial inner side and the radial outer side, are compressed by the fixing pieces (10) at the radial inner side and the radial outer side as well as the circumferential left side and the circumferential right side and are fixed in the magnetic steel grooves of the rotor core (8) through bolts on the fixing pieces (10), the radial outer side of each magnetic steel (9) is provided with one fixing piece (10), and the radial inner sides of every two adjacent magnetic steels (9) share one fixing piece (10); two circumferential sides of every two adjacent magnetic steels (9) share one fixing piece (10).
8. A hybrid cooled dual rotor single stator disc permanent magnet machine according to claim 7, wherein: each magnetic steel (9) is formed by splicing a plurality of small magnetic steel bodies through insulating glue.
9. A hybrid cooled dual rotor single stator disc permanent magnet machine according to claim 6, wherein: the running clearance of the motor is more than 2 mm; the annular cover plate (3) is fixedly connected to the inner side step of the rotor core (8) through bolts, and the peripheral surface of the annular cover plate (3) is flush with the peripheral surface of the rotor core (8).
10. A hybrid cooled dual rotor single stator disc permanent magnet machine according to claim 5, wherein: the axial section of the magnetic pole pressing plate (6) is in a dovetail shape, the sector magnetic poles (7) and the rib plates (2) which are uniformly distributed in the circumferential direction are radially compressed, each sector magnetic pole (7) comprises a stator core (701) and a stator winding (702), and the stator core (701) is provided with dovetail structures at two axial sides of a stator; the stator iron core (701) is formed by laminating silicon steel sheets or by pressing iron powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010478004.6A CN113746232A (en) | 2020-05-29 | 2020-05-29 | Mixed cooling double-rotor single-stator disc type permanent magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010478004.6A CN113746232A (en) | 2020-05-29 | 2020-05-29 | Mixed cooling double-rotor single-stator disc type permanent magnet motor |
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| Publication Number | Publication Date |
|---|---|
| CN113746232A true CN113746232A (en) | 2021-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010478004.6A Pending CN113746232A (en) | 2020-05-29 | 2020-05-29 | Mixed cooling double-rotor single-stator disc type permanent magnet motor |
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| CN (1) | CN113746232A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114977564A (en) * | 2022-06-16 | 2022-08-30 | 沈阳工业大学 | Stator liquid cooling structure and stator structure of stator yoke-free disc type motor |
| CN116937892A (en) * | 2023-08-23 | 2023-10-24 | 中国北方车辆研究所 | Wind and liquid mixed cooling device of disc type motor |
-
2020
- 2020-05-29 CN CN202010478004.6A patent/CN113746232A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114977564A (en) * | 2022-06-16 | 2022-08-30 | 沈阳工业大学 | Stator liquid cooling structure and stator structure of stator yoke-free disc type motor |
| US11855487B1 (en) | 2022-06-16 | 2023-12-26 | Shenyang University Of Technology | Stator liquid cooling structure and stator structure of stator yokeless disc motor |
| CN116937892A (en) * | 2023-08-23 | 2023-10-24 | 中国北方车辆研究所 | Wind and liquid mixed cooling device of disc type motor |
| CN116937892B (en) * | 2023-08-23 | 2024-03-15 | 中国北方车辆研究所 | Wind and liquid mixed cooling device of disc type motor |
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