CN216904461U - Double-power self-coupling axial flux induction motor - Google Patents
Double-power self-coupling axial flux induction motor Download PDFInfo
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- CN216904461U CN216904461U CN202022509744.XU CN202022509744U CN216904461U CN 216904461 U CN216904461 U CN 216904461U CN 202022509744 U CN202022509744 U CN 202022509744U CN 216904461 U CN216904461 U CN 216904461U
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- 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 belongs to the technical field of motors, and particularly relates to a double-power self-coupling axial flux induction motor. The technical problem of low power density ratio in the prior art is solved, the motor comprises a motor shell, wherein a first stator component and a second stator component are arranged in the motor shell, a rotor magnetic yoke is arranged between the first stator component and the second stator component, a first rotor component and a second rotor component are respectively arranged between the rotor magnetic yoke and the first stator component and between the rotor magnetic yoke and the second stator component, and the first rotor component and the second rotor component are fixedly installed on the same rotor magnetic yoke. The invention greatly improves the power density of the motor.
Description
Technical Field
The invention belongs to the technical field of motors, and particularly relates to a dual-power self-coupling axial flux induction motor.
Background
An axial flux machine is a machine in which the main magnetic field is along the direction of the rotating shaft, and has the advantages of short axial length, light weight and high torque density. In some particular use scenarios, it is desirable to reduce the size of the motor while obtaining a large output power, such as an electric vehicle, with the motor being the drive and moving with its body as a load. For example, the chinese patent document discloses a rotor for an electric machine [ CN201580079642.8], the electric machine comprising a first stator and a second stator in mirror-symmetrical relationship with the first stator such that a gap is formed between the first stator and the second stator, a thin annular disc-shaped rotor is disposed in the gap, and conductor bars together with an inner periphery and an outer periphery form a cage winding of the rotor.
The above scheme basically achieves the expectation of improving the power density, but the improvement of the output power is not optimized while the weight of the motor is reduced, and a larger output power is expected during the actual use of the motor, and the output power is generally improved by increasing the stators in different directions and reducing the magnetic leakage phenomenon.
Disclosure of Invention
The present invention is directed to solve the above problems, and an object of the present invention is to provide a dual-power self-coupling axial flux induction motor capable of increasing the output power of the motor and increasing the power density by relatively reducing the weight of the motor.
In order to achieve the purpose, the invention adopts the following technical scheme:
the double-power self-coupling axial flux induction motor comprises a motor shell, wherein a first stator assembly and a second stator assembly are arranged in the motor shell, a rotor magnetic yoke is arranged between the first stator assembly and the second stator assembly, a first rotor assembly and a second rotor assembly are respectively arranged between the rotor magnetic yoke and the first stator assembly and between the rotor magnetic yoke and the second stator assembly, the first rotor assembly and the second rotor assembly are fixedly arranged on the same rotor magnetic yoke, and the rotor magnetic yoke is rotatably connected to the motor shell through a rotating shaft.
In the double-power self-coupling axial flux induction motor, the rotor assembly comprises an inner annular guide ring and an outer annular guide ring, a plurality of spoke conductors are uniformly arranged between the inner annular guide ring and the outer annular guide ring, and the spoke conductors are uniformly distributed in a radial manner.
In the double-power self-coupling axial flux induction motor, the spoke conductors are radially arranged, the rotor magnetic yoke is provided with mounting grooves corresponding to the spoke conductors, and the spoke conductors are clamped in the mounting grooves.
In the double-power self-coupling axial flux induction motor, the inner annular guide ring, the outer annular guide ring and the spoke conductors are integrally formed, and the inner annular guide ring, the outer annular guide ring and the rotating shaft are concentrically arranged.
In the double-power self-coupling axial flux induction motor, the two ends of the rotor magnetic yoke are respectively provided with uniformly distributed and radial mounting grooves, and each spoke conductor in the first rotor assembly and the second rotor assembly is respectively and fixedly mounted in each mounting groove correspondingly.
In the double-power self-coupling axial flux induction motor, the rotor magnetic yoke is in a cylindrical shape with openings at two ends, a support inner core is arranged in the middle of an inner cavity of the rotor magnetic yoke and divides the inner cavity of the rotor magnetic yoke into a first inner ring cavity and a second inner ring cavity, and the inner annular guide rings of the first rotor assembly and the second rotor assembly are respectively arranged in the first inner ring cavity and the second inner ring cavity.
In the double-power self-coupling axial flux induction motor, the support inner core is provided with a plurality of lightweight holes, the outer wall of the support inner core is provided with a plurality of first positioning holes, the rotor yoke is provided with second positioning holes which correspond to the first positioning holes and penetrate through the wall of the rotor yoke, and the support inner core is connected with the rotor yoke in a positioning mode through the first positioning holes and the second positioning holes.
In the double-power self-coupling axial flux induction motor, the stator assembly comprises a stator magnetic yoke, the stator magnetic yoke is disc-shaped, a plurality of groups of stator conducting bar assemblies are arranged on the stator magnetic yoke, each stator conducting bar assembly comprises a conducting bar, and adjacent conducting bars in the same group are connected end to form a loop.
In foretell double-power self-coupling axial flux induction machine, the conducting bar includes first conducting bar body and second conducting bar body, and first conducting bar body and second conducting bar body are V font and symmetry setting, first conducting bar body and second conducting bar body set up respectively at first aspect and second aspect, first conducting bar body pass second conducting bar body below and the first conducting bar body coupling in other stator conducting bar subassemblies, first conducting bar body be connected at the connecting portion at its both ends with the second conducting bar body through setting up.
In the double-power self-coupling axial flux induction motor, the rotating shaft is in transmission connection with a circulating water pump, a plurality of heat absorption water channels close to the inner wall of the motor shell and a plurality of heat dissipation water channels close to the outer wall of the motor shell are arranged on the barrel body of the motor shell, the heat absorption water channels and the heat dissipation water channels are connected in series through connecting water channels on end covers at two ends of the motor shell to form heat dissipation water channels, the heat dissipation water channels are connected with the circulating water pump, and a refrigerant supplementing port is arranged on each heat dissipation water channel or the circulating water pump.
Compared with the prior art, the invention has the advantages that:
1. the two symmetrically arranged rotors are arranged between the two symmetrically arranged stators, so that torsion force formed by the two groups of stators and the rotors is applied to the output shaft, the output power is greatly improved, meanwhile, compared with two axial flux motors, the weight of at least one rotor magnetic yoke and two end covers is saved, the weight is only increased in the axial direction of the motor shell, and the power density is greatly improved.
2. Compared with a motor with two rotors subjected to magnetic field force of the stators on one side, the magnetic field force generator has the advantages that the two rotor assemblies form a common magnetic yoke to form an interlayer structure, and the technical defect of large magnetic pulling force between the stators and the rotors is overcome.
3. The cooling medium exchanges heat with the motor through the heat exchange pipeline close to the inner part to cool the motor, the cooling medium dissipates heat through the heat dissipation pipeline close to the outer part to cool after being heated, and the cooled cooling medium enters the heat exchange pipeline again to form an inner circulation.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is an exploded view of the present invention;
FIG. 4 is a schematic view of a rotor assembly structure provided by the present invention;
FIG. 5 is a schematic view of a rotor yoke structure provided by the present invention;
FIG. 6 is a schematic view of a stator structure provided by the present invention;
FIG. 7 is a schematic diagram of a bar group structure provided by the present invention;
FIG. 8 is a schematic view of the structure of the heat absorption water channel and the heat dissipation water channel provided by the present invention
In the figure: the motor comprises a motor shell 1, a first stator component 2, a second stator component 3, a rotor yoke 4, a first rotor component 5, a second rotor component 6, a rotating shaft 7, a rotor component 8, an inner annular guide ring 9, an outer annular guide ring 10, spoke conductors 11, a mounting groove 12, a supporting inner core 13, a first inner ring cavity 14, a second inner ring cavity 15, a second positioning hole 16, a stator yoke 18, a stator guide bar component 19, guide bars 20, a first guide bar body 21, a second guide bar body 22, a connecting part 23, a circulating water pump 24, a heat dissipation water channel 25, a heat absorption water channel 26, a connecting water channel 27 and a refrigerant supplementing opening 28.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
This double dynamical self-coupling axial flux induction machine, including motor casing 1, be provided with first stator subassembly 2 and second stator subassembly 3 in the motor casing 1, first stator subassembly 2 and second stator subassembly 3 between be provided with rotor yoke 4, rotor yoke 4 and first stator subassembly 2 and second stator subassembly 3 between be provided with first rotor subassembly 5 and second rotor subassembly 6 respectively, first rotor subassembly 5 and second rotor subassembly 6 fixed mounting on same rotor yoke 4, rotor yoke 4 through pivot 7 swivelling joint on motor casing 1.
The first stator component 2 is electrified to generate a rotating magnetic field, the first rotor component 4 cuts magnetic induction lines of the rotating magnetic field to generate an asynchronous magnetic field, torque is generated and acted on the rotating shaft 7, meanwhile, the second stator component 3 is electrified to generate a rotating magnetic field in the same direction as the first stator component 2, the second rotor component 5 cuts magnetic induction lines of the rotating magnetic field to generate an asynchronous magnetic field, torque in the same direction as the first rotor component 4 is generated and acted on the rotating shaft 7, the two torques are superposed, the torque output on the rotating shaft 7 is greatly improved, the power of two axial flux motors with magnetic fields on one side is equivalent to that of two axial flux motors, however, compared with two flux induction motors, the weight of two end covers and one rotor yoke is reduced, the installation part of the motor shell required by the installation of the end covers is considered, the material increase in the axial direction of the motor shell can be basically ignored, and the structure of the motor is more compact, the integration performance is enhanced, the power density is greatly improved, and the requirement of higher power output under the same quality is met.
Compared with a motor with two rotors subjected to magnetic field force of the stator on one side, the two rotor assemblies form a common magnetic yoke to form an interlayer structure, and the technical defect that the magnetic tension between the stator and the rotor is large is overcome.
Specifically, rotor subassembly 8 includes interior annular conducting ring 9 and outer annular conducting ring 10, interior annular conducting ring 9 and outer annular conducting ring 10 between evenly be provided with a plurality of spoke conductors 11, form closed loop squirrel-cage planar winding, when cutting rotating magnetic field, produce induction magnetic field, spoke conductors 11 be radial evenly arranging, ensure that the induction magnetic field that produces is even, prevent because the magnetic field inequality leads to the moment of torsion direction to produce the deviation, cause pivot and bearing to cause the harm, extension motor life.
Interior annular guide ring 9, outer annular guide ring 10 and spoke conductor 11 integrated into one piece, electric motor rotor is high-speed rotatory spare part in the motor, requires higher intensity, and integrated into one piece has avoided the not enough problem of joint strength between interior annular guide ring 9, outer annular guide ring 10 and the spoke conductor 11. The inner annular guide ring 9, the outer annular guide ring 10 and the rotating shaft 7 are concentrically arranged. Reducing the jumping of the rotor during high-speed rotation.
Further, rotor yoke 4 is cylindrical, rotor yoke 4 on be close to first stator subassembly 2 and second stator subassembly 3 both ends be provided with respectively with the corresponding mounting groove 12 of spoke conductor 11, spoke conductor 11 joint in mounting groove 12. The spoke guide bars 11 are supported by the mounting grooves 12, and the strength of the rotor assembly is further improved.
Further, the two ends of the rotor yoke 4 are respectively provided with uniformly distributed and radial mounting grooves 12, and each spoke conductor 11 in the first rotor assembly 5 and the second rotor assembly 6 is respectively and correspondingly fixedly mounted in each mounting groove 12. The protrusion between the mounting grooves 12 is embedded between the two spoke conducting bars 11, and the rotor assembly is magnetized after obtaining an induction magnetic field, so that the magnetic field is enhanced, and the output power is further enhanced. The rotor yoke 4 is made of a soft magnetic material, such as a silicon steel sheet.
Preferably, the rotor yoke 4 is in a cylinder shape with two open ends, a supporting inner core 13 is arranged in the middle of the inner cavity of the rotor yoke 4, the supporting inner core 13 divides the inner cavity of the rotor yoke 4 into a first inner ring cavity 14 and a second inner ring cavity 15, the inner annular guide rings 9 of the first rotor assembly 5 and the second rotor assembly 6 are respectively arranged in the first inner ring cavity 14 and the second inner ring cavity 15, and the supporting inner core 13 is made of a non-magnetic material. After the rotor magnetic yoke 4 is prevented from being magnetized, the magnetic field leaks from the rotating shaft 7 and the supporting inner core 13, and the power of the motor is reduced or eliminated.
Preferably, a plurality of lightweight holes are formed in the support inner core 13, a plurality of first positioning holes are formed in the outer wall of the support inner core, a second positioning hole 16 corresponding to the first positioning hole and penetrating through the wall of the rotor yoke 4 is formed in the rotor yoke 4, and the support inner core 13 is connected with the rotor yoke 4 in a positioning mode through the first positioning hole and the second positioning hole 16. The rotor magnetic yoke 4 is stably and effectively connected with the supporting seat 13, and the rotor magnetic yoke is prevented from being separated from the rotating shaft 7 and losing effectiveness when rotating at a high speed.
Preferably, the stator assembly comprises a stator yoke 18, the stator yoke 18 is in a disc shape, a plurality of groups of stator conducting bar assemblies 19 are arranged on the stator yoke 18, each stator conducting bar assembly 19 comprises a conducting bar 20, and adjacent conducting bars 20 in the same group are connected end to form a loop. The conducting bar 20 comprises a first conducting bar body 21 and a second conducting bar body 22 which are arranged in a V shape and symmetrically, the first conducting bar body 21 and the second conducting bar body 22 are respectively arranged on a first layer and a second layer, the first conducting bar body 21 penetrates through the lower part of the second conducting bar body 22 in other stator conducting bar assemblies 19 and is connected with the first conducting bar body 21, and the first conducting bar body 21 and the second conducting bar body 22 are connected through connecting parts 23 arranged at two ends of the first conducting bar body 21 and the second conducting bar body 22. The conducting bar assembly 19 forms a magnetic field after being electrified, and the direction of the current is controlled to form a rotating magnetic field. The first conducting bar and the second conducting bar 22 are both flat, so that the contact area between the first conducting bar and the stator magnetic yoke is increased, the purpose of effective heat dissipation is achieved, the resistance of the cross section of the conducting bars is uniform, and the magnetic field generated by the stator is enhanced.
Preferably, the rotating shaft 7 is in transmission connection with a circulating water pump 24, the cylinder body of the motor housing 1 is provided with a plurality of heat absorption water channels 26 close to the inner wall of the motor housing 1 and a plurality of heat dissipation water channels 25 close to the outer wall of the motor housing 1, the heat absorption water channels 26 and the heat dissipation water channels 25 are sequentially connected in series through connecting water channels 27 on end covers at two ends of the motor housing 1 to form heat dissipation water channels, the heat dissipation water channels are connected with the circulating water pump 24, and the heat dissipation water channels or the circulating water pump 24 are provided with refrigerant supplementing ports 28.
The cooling medium exchanges heat with the motor through the heat exchange pipeline close to the inner part to cool the motor, the cooling medium dissipates heat through the heat dissipation pipeline close to the outer part to cool after being heated, and the cooled cooling medium enters the heat exchange pipeline again to form an inner circulation.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Although the motor case 1, the first stator assembly 2, the second stator assembly 3, the rotor yoke 4, the first rotor assembly 5, the second rotor assembly 6, the rotating shaft 7, the rotor assembly 8, the inner annular guide ring 9, the outer annular guide ring 10, the spoke conductors 11, the mounting groove 12, the support inner core 13, the first inner ring cavity 14, the second inner ring cavity 15, the second positioning hole 16, the stator yoke 18, the stator guide bar assembly 19, the guide bar 20, the first guide bar body 21, the second guide bar body 22, the connecting portion 23, the circulating water pump 24, the heat radiation water channel 25, the heat absorption water channel 26, the connecting water channel 27, and the refrigerant supplement port 28 are more used herein. Etc., but does not exclude the possibility of using other terms. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.
Claims (10)
1. The utility model provides a double dynamical self-coupling axial flux induction machine, includes motor casing (1), its characterized in that, motor casing (1) in be provided with first stator subassembly (2) and second stator subassembly (3), first stator subassembly (2) and second stator subassembly (3) between be provided with rotor yoke (4), rotor yoke (4) and first stator subassembly (2) and second stator subassembly (3) between be provided with first rotor subassembly (5) and second rotor subassembly (6) respectively, first rotor subassembly (5) and second rotor subassembly (6) fixed mounting on same rotor yoke (4), rotor yoke (4) through pivot (7) rotatable coupling on motor casing (1).
2. The dual-power self-coupling axial flux induction machine of claim 1, wherein the rotor assembly (8) comprises an inner annular guide ring (9) and an outer annular guide ring (10), a plurality of spoke conductors (11) are uniformly arranged between the inner annular guide ring (9) and the outer annular guide ring (10), and the spoke conductors (11) are uniformly arranged in a radial shape.
3. The dual-power self-coupling axial flux induction motor according to claim 2, wherein the rotor yoke (4) is cylindrical, mounting grooves (12) corresponding to the spoke conductors (11) are respectively formed in the two ends of the rotor yoke (4) close to the first stator assembly (2) and the second stator assembly (3), and the spoke conductors (11) are clamped in the mounting grooves (12).
4. The dual-power self-coupling axial flux induction machine according to claim 3, wherein the inner annular guide ring (9), the outer annular guide ring (10) and the spoke conductors (11) are integrally formed, and the inner annular guide ring (9), the outer annular guide ring (10) and the rotating shaft (7) are concentrically arranged.
5. The dual-power self-coupling axial flux induction machine according to any one of claims 1-4, wherein the rotor yoke (4) is provided at both ends thereof with uniformly distributed and radial mounting grooves (12), and each spoke conductor (11) of the first rotor assembly (5) and the second rotor assembly (6) is correspondingly and fixedly mounted in each mounting groove (12).
6. The dual-power self-coupling axial flux induction motor according to claim 5, wherein the rotor yoke (4) is cylindrical with two open ends, a supporting core (13) is disposed in the middle of the inner cavity of the rotor yoke (4), the supporting core (13) divides the inner cavity of the rotor yoke (4) into a first inner ring cavity (14) and a second inner ring cavity (15), the inner annular guide rings (9) of the first rotor assembly (5) and the second rotor assembly (6) are disposed in the first inner ring cavity (14) and the second inner ring cavity (15) in a distributed manner, and the supporting core (13) is made of a non-magnetic material.
7. The dual-power self-coupling axial flux induction motor of claim 6, wherein the support inner core (13) is provided with a plurality of lightweight holes, the outer wall of the support inner core (13) is provided with a plurality of first positioning holes, the rotor yoke (4) is provided with second positioning holes (16) which penetrate through the cylinder wall of the rotor yoke (4) and correspond to the first positioning holes, and the support inner core (13) and the rotor yoke (4) are connected in a positioning manner through the first positioning holes and the second positioning holes (16).
8. The hybrid self-coupling axial flux induction motor according to claim 1, wherein the stator assembly comprises a stator yoke (18), the stator yoke (18) is in a disc shape, a plurality of groups of stator bar assemblies (19) are arranged on the stator yoke (18), each stator bar assembly (19) comprises a bar (20), and adjacent bars (20) in the same group are connected end to form a loop.
9. The hybrid self-coupling axial flux induction electric machine according to claim 8, wherein the conducting bar (20) comprises a first conducting bar body (21) and a second conducting bar body (22), the first conducting bar body (21) and the second conducting bar body (22) are arranged symmetrically and in a V shape, the first conducting bar body (21) and the second conducting bar body (22) are respectively arranged on a first layer and a second layer, the first conducting bar body (21) passes through the lower part of the second conducting bar body (22) in other stator conducting bar assemblies (19) and is connected with the first conducting bar body (21), and the first conducting bar body (21) and the second conducting bar body (22) are connected through connecting parts (23) arranged at two ends of the first conducting bar body and the second conducting bar body.
10. The dual-power self-coupling axial flux induction motor according to claim 1, wherein the rotating shaft (7) is in transmission connection with a circulating water pump (24), the cylinder body of the motor housing (1) is provided with a plurality of heat absorption water channels (26) close to the inner wall of the motor housing (1) and a plurality of heat dissipation water channels (25) close to the outer wall of the motor housing (1), the heat absorption water channels (26) and the heat dissipation water channels (25) are sequentially connected in series through connecting water channels (27) on end covers at two ends of the motor housing (1) to form heat dissipation water channels, the heat dissipation water channels are connected with the circulating water pump (24), and the heat dissipation water channels or the circulating water pump (24) are provided with refrigerant supplementing ports (28).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022509744.XU CN216904461U (en) | 2020-11-03 | 2020-11-03 | Double-power self-coupling axial flux induction motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022509744.XU CN216904461U (en) | 2020-11-03 | 2020-11-03 | Double-power self-coupling axial flux induction motor |
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| Publication Number | Publication Date |
|---|---|
| CN216904461U true CN216904461U (en) | 2022-07-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022509744.XU Active CN216904461U (en) | 2020-11-03 | 2020-11-03 | Double-power self-coupling axial flux induction motor |
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| CN (1) | CN216904461U (en) |
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