CN112350461A - High mechanical strength modularization axial flux motor - Google Patents

High mechanical strength modularization axial flux motor Download PDF

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Publication number
CN112350461A
CN112350461A CN202011128488.8A CN202011128488A CN112350461A CN 112350461 A CN112350461 A CN 112350461A CN 202011128488 A CN202011128488 A CN 202011128488A CN 112350461 A CN112350461 A CN 112350461A
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permanent magnet
magnetizing
stator
rotor
modular
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Inventor
宋志翌
黄建
张新华
王贯
王天乙
王传泽
杜林奎
陈爱峰
张鑫
高岩
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Beijing Automation Control Equipment Institute BACEI
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Beijing Automation Control Equipment Institute BACEI
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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
    • 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
    • H02K1/14—Stator cores with salient poles
    • H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
    • H02K1/148—Sectional cores
    • 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
    • H02K1/182—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to stators axially facing the rotor, i.e. with axial or conical air gap
    • 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
    • H02K1/2793—Rotors axially facing stators
    • 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
    • H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K16/00—Machines with more than one rotor or stator
    • H02K16/04—Machines with one rotor and two stators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/18—Windings for salient poles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
    • H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
    • H02K2213/12—Machines characterised by the modularity of some components

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

The invention discloses a high-mechanical-strength modularized axial flux motor which comprises a modularized stator, a permanent magnet rotor, a machine shell, an end cover and a rotating shaft, wherein the modularized stator can adopt a single-side or double-side design, the modularized stator is provided with a Q groove and comprises Q identical winding tooth modules, a concentrated winding is wound on one side of each winding tooth module, the permanent magnet rotor comprises a rotor iron core and p antipodal permanent magnets, the permanent magnets are arranged on the opposite sides of the rotor iron core and the modularized stator, the end cover, the permanent magnets and the rotor iron core are connected through dovetail grooves, so that the mechanical strength is enhanced, and the operation reliability of the motor is improved. The invention solves the problems of complex structure, low winding slot filling rate, poor mechanical strength of the motor, easy falling of the permanent magnet under the axial magnetic pull force and the like of the stator core of the conventional axial flux motor.

Description

High mechanical strength modularization axial flux motor
Technical Field
The invention belongs to the technical field of permanent magnet motors, and particularly relates to a high-mechanical-strength modular axial flux motor.
Background
Axial flux machines, also known as disc machines, have planar air gaps and axial air gap fields. Compared with the traditional radial flux motor, the axial flux motor has the advantages of compact axial space structure, good heat dissipation condition, high power density and the like, and particularly has more obvious superiority on the occasion with limited axial size. However, the three-dimensional magnetic field distribution of the axial flux motor makes the stator core difficult to process, the stator and the rotor bear great axial magnetic pull force, the mechanical strength of the motor is poor, and the motor is easy to deform.
The existing stator iron core of the axial flux motor is mostly formed by winding and slotting silicon steel sheets or casting a mold by a soft magnetic composite material, the former has a complex processing technology, the silicon steel sheets are wound and have risks of scattering sheets along the radial direction or deforming along the axial direction, the latter has very high mold cost when processing a small batch of sample machines, and the disc type stator iron core structure causes the difficulty of coil inserting of a winding to be increased and the slot filling rate to be low. In addition, because of bearing a large axial magnetic pull force, the stator core and the end cover are difficult to fix, and the stator core has the risk of axial movement. The surface-mounted permanent magnet is connected with the rotor core only by gluing, and the permanent magnet has the risk of falling off under the action of axial attraction force, so that the permanent magnet is adsorbed together with the stator core to cause the motor to sweep the chamber.
Disclosure of Invention
The invention aims to provide a high-mechanical-strength modularized axial flux motor to solve the problems that a stator core of a conventional axial flux motor is complex in structure, low in winding slot filling rate, poor in mechanical strength, easy to fall off due to axial magnetic pull of a permanent magnet and the like.
The technical scheme adopted by the invention for realizing the aim is as follows:
the invention provides a high-mechanical-strength modularized axial flux motor which comprises modularized stators, permanent magnet rotors, a machine shell, end covers and a rotating shaft, wherein the number of the modularized stators is two, the two modularized stators are respectively fixed on the inner walls of a left end cover and a right end cover, and the permanent magnet rotors are fixed on the rotating shaft and positioned between the two modularized stators; the rotating shaft is rotatably connected with the end covers at two sides through bearings, and an air gap is formed between the permanent magnet rotor and the modular stator; the modularized stator is provided with Q slots and comprises Q identical winding tooth modules, one side of each winding tooth module is wound with a concentrated winding, the number of winding phases is m, m is more than or equal to 3, and m is a positive integer; the modularized stator is connected with the end cover through a dovetail groove; the permanent magnet rotor comprises a rotor iron core and p antipodal permanent magnets, p is a positive integer, the rotor iron core is disc-shaped, the permanent magnets are symmetrically arranged on the end faces of the discs on the two sides, and the permanent magnets are connected with the rotor iron core through dovetail grooves.
The invention provides another high-mechanical-strength modularized axial flux motor which comprises a modularized stator, a permanent magnet rotor, a machine shell, end covers and a rotating shaft, wherein one modularized stator is fixed on the inner wall of the end cover on one side, and the permanent magnet rotor is fixed on the rotating shaft; the rotating shaft is rotatably connected with the end covers at two sides through bearings, and an air gap is formed between the permanent magnet rotor and the modular stator; the modularized stator is provided with Q slots and comprises Q identical winding tooth modules, one side of each winding tooth module is wound with a concentrated winding, the number of winding phases is m, m is more than or equal to 3, and m is a positive integer; the modularized stator is connected with the end cover through a dovetail groove; the permanent magnet rotor comprises a rotor core and p antipodal permanent magnets, p is a positive integer, the rotor core is disc-shaped, the permanent magnets are arranged on the end face, opposite to the modularized stator, of the disc, of the rotor core, and the permanent magnets are connected with the rotor core through dovetail grooves.
Preferably, adjacent winding tooth modules of the modular stator are connected through clamping grooves to form a disc structure, one side of each winding tooth module is a dovetail groove in the radial direction, and the other side of each winding tooth module is a T-shaped convex tooth in the radial direction.
Preferably, the permanent magnets on the rotor iron core are uniformly distributed in a radial shape by taking the rotating shaft as the center, the permanent magnets are magnetized in parallel along the axial direction or in a sectional special-shaped array, and the magnetizing directions of two adjacent poles are opposite.
Preferably, each pole of the permanent magnet adopts a 2-piece special-shaped array structure, each pole comprises 1 radial magnetizing permanent magnet and 1 tangential magnetizing permanent magnet which are distributed at intervals, and the pole arc coefficient of the radial magnetizing permanent magnet is alphap1The pole arc coefficient of the tangential magnetizing permanent magnet is 1-alphap1。
Preferably, each pole of the permanent magnet adopts a 3-piece special-shaped array structure, each pole comprises 1 radial magnetizing permanent magnet, 1 beta angle magnetizing permanent magnet and 1-beta angle magnetizing permanent magnet which are distributed at intervals, and the pole arc coefficient of the radial magnetizing permanent magnet is alphap1The pole arc coefficients of the beta angle magnetizing permanent magnet and the-beta angle magnetizing permanent magnet are as follows
Figure BDA0002734334800000031
Wherein the beta angle is the included angle between the magnetizing direction and the radial direction.
Preferably, each pole of the permanent magnet adopts a 4-piece special-shaped array structure, each pole comprises 1 radial magnetizing permanent magnet, 1 beta angle magnetizing permanent magnet, 1 tangential magnetizing permanent magnet and 1-beta angle magnetizing permanent magnet which are distributed at intervals, and the pole arc coefficient of the radial magnetizing permanent magnet is alphap1The pole arc coefficient of the tangential magnetizing permanent magnet is alphap2The pole arc coefficients of the beta angle magnetizing permanent magnet and the-beta angle magnetizing permanent magnet are as follows
Figure BDA0002734334800000032
Preferably, the value range of the beta is 20-70 degrees.
Preferably, the winding tooth modules are made of silicon steel sheets or SMC soft magnetic composite materials; the concentrated winding is formed by winding a flat copper wire or a round copper wire; the permanent magnet is made of ferrite, samarium cobalt or neodymium iron boron.
Compared with the prior art, the invention has the beneficial effects that:
the invention discloses a high-mechanical-strength modularized axial flux motor, wherein a stator adopts a modularized concentrated winding design, the winding process of the motor is effectively improved, the slot fullness rate of the motor is improved, and the electromagnetic performance of the motor is further improved. The stator core and the end cover are fixed in a dovetail groove mode, so that the mechanical strength of the stator core is guaranteed, and the stator core is prevented from being deformed or loosened along the axial direction. The dovetail groove connecting mode between the permanent magnet and the rotor core simplifies the assembly process of the permanent magnet, limits the play of the permanent magnet along the circumferential direction, avoids the risk of falling off of the permanent magnet under the action of axial attraction force, and improves the operation reliability of the motor.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 is a schematic structural diagram of a high mechanical strength modular axial-flux electric machine according to embodiment 1 of the present invention;
fig. 2 is a schematic structural view of a modular stator of the axial flux motor in embodiment 1;
FIG. 3 is a schematic view of a rotor magnetized in parallel along the axial direction according to embodiment 2 of the present invention;
FIG. 4 is a schematic structural diagram of a full-teeth wound, 2-block-per-pole, special-shaped array rotor according to an embodiment 3 of the present invention;
FIG. 5 is a schematic structural diagram of a rotor with 3 blocks of special-shaped arrays per pole in the embodiment 4 of the present invention;
FIG. 6 is a schematic structural diagram of a rotor with 4 blocks of special-shaped arrays per pole in the embodiment 5 of the present invention;
fig. 7 is a schematic diagram of another high mechanical strength modular axial-flux electric machine according to embodiment 6 of the present invention;
FIG. 8 is a schematic structural view of a modular stator of an axial flux motor in embodiment 6;
FIG. 9 is a schematic view of a rotor with parallel magnetization along the axial direction according to the embodiment 7 of the present invention;
FIG. 10 is a schematic view of a 2-block-per-pole, profiled array rotor configuration in accordance with an embodiment 8 of the present invention;
FIG. 11 is a schematic view of a 3-block-per-pole, profiled array rotor configuration in accordance with an embodiment of the present invention 9;
fig. 12 is a schematic view of a rotor structure with 4 profile arrays per pole in the embodiment 10 of the present invention.
Wherein the figures include the following reference numerals:
1. a modular stator; 2. a permanent magnet rotor; 3. a housing; 4. an end cap; 5. a rotating shaft; 6. a first bearing; 7. a second bearing; 101. a winding tooth module; 102. concentrating the winding; 201. a rotor core; 202. and a permanent magnet.
Detailed Description
The following provides a detailed description of specific embodiments of the present invention. In the following description, for purposes of explanation and not limitation, specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details.
It should be noted that, in order to avoid obscuring the present invention with unnecessary details, only the device structures and/or processing steps that are closely related to the scheme according to the present invention are shown in the drawings, and other details that are not so relevant to the present invention are omitted.
Example 1
As shown in fig. 1, this embodiment a high mechanical strength modularization axial flux motor, including modularization stator 1, permanent magnet rotor 2, casing 3, end cover 4 and pivot 5, the outer ring terminal surface of two modularization stators 1 is fixed respectively on the inner wall of controlling end cover 4, and permanent magnet rotor 2 is fixed on pivot 5, and is located between two modularization stators 1, and pivot 5 rotates with second bearing 7 and both sides end cover 4 through first bearing 6 and is connected, has the air gap between the inner ring terminal surface of permanent magnet rotor 2 and both sides modularization stator 1, air gap length is L.
As shown in fig. 2, the m-phase Q-slot modular stator 1 includes Q identical winding tooth modules 101, adjacent winding tooth modules 101 are connected through a slot to form a disk structure, one side of each winding tooth module 101 is a dovetail groove along the radial direction, the other side of each winding tooth module 101 is a T-shaped convex tooth along the radial direction, a concentrated winding 102 is wound on the T-shaped convex tooth of the winding tooth module 101, m is greater than or equal to 3, m is a positive integer, Q is a positive integer, and Q-slot opening facilitates concentrated winding. The modular stator 1 and the end cover 4 are connected by adopting a radial dovetail groove.
The permanent magnet rotor 2 includes a rotor core 201 and p counter-pole permanent magnets 202, p being a positive integer. The rotor core 201 is disc-shaped, permanent magnets 202 are symmetrically arranged on the disc end faces on two sides of the rotor core 201, the permanent magnets 202 arranged on each disc end face are uniformly distributed in a radial shape by taking the rotating shaft 5 as the center, the permanent magnets 202 can be magnetized in an axial parallel magnetizing mode or in a sectional special-shaped array magnetizing mode, the special-shaped array can be in a 2-piece, 3-piece or 4-piece permanent magnet structure, the special-shaped array magnetizing structure is adopted, the magnetic field is in a quasi-sinusoidal direction, and the air gap magnetic density is larger than that of radial magnetizing. The permanent magnet 202 and the rotor core 201 are connected in a radial dovetail groove manner.
Example 2: the present embodiment is described with reference to fig. 1, fig. 2, and fig. 3, and the present embodiment is different from embodiment 1 in that the permanent magnet 202 adopts an axially parallel magnetizing structure, and magnetizing directions of two adjacent poles are opposite. The other composition and connection were the same as in example 1.
Example 3: the present embodiment is described with reference to fig. 1, fig. 2, and fig. 4, and the present embodiment is different from embodiment 1 in that the permanent magnet 202 has a special-shaped array structure with 2 blocks per pole, one pole is formed by 1 axial magnetizing permanent magnet and 1 tangential magnetizing permanent magnet distributed at intervals, and the axisThe pole arc coefficient of the magnetizing permanent magnet is alphap1The pole arc coefficient of the permanent magnet of the tangential magnetizing permanent magnet is 1-alphap1And the magnetizing directions of two adjacent poles are opposite. The other composition and connection were the same as in example 1.
Example 4: the present embodiment is described with reference to fig. 1, fig. 2, and fig. 5, and the present embodiment is different from embodiment 1 in that the permanent magnet 202 has a special-shaped array structure with 3 blocks per pole, one pole is formed by 1 axial magnetizing permanent magnet, 1 β -angle magnetizing permanent magnet, and 1- β -angle magnetizing permanent magnet distributed at intervals, and the pole arc coefficient of the axial magnetizing permanent magnet is αp1The coefficient of polar arc of the beta angle magnetizing permanent magnet and the-beta angle magnetizing permanent magnet is
Figure BDA0002734334800000071
The magnetizing directions of two adjacent poles are opposite. Wherein the beta angle is an included angle between the magnetizing direction and the radial direction, and the preferable value range of beta is 20-70 degrees. The other composition and connection were the same as in example 1.
Example 5: the embodiment is described with reference to fig. 1, 2, and 6, and the difference between the embodiment and embodiment 1 is that the permanent magnet 202 has a special-shaped array structure with 4 blocks per pole, one pole is formed by 1 axial magnetizing permanent magnet, 1 beta angle magnetizing permanent magnet, 1 tangential magnetizing permanent magnet, and 1-beta angle magnetizing permanent magnet distributed at intervals, and the pole arc coefficient of the axial magnetizing permanent magnet is αp1The pole arc coefficient of the tangential magnetizing permanent magnet is alphap2The coefficient of polar arc of the beta angle magnetizing permanent magnet and the-beta angle magnetizing permanent magnet is
Figure BDA0002734334800000072
The magnetizing directions of two adjacent poles are opposite. The other composition and connection were the same as in example 1.
Example 6:
as shown in fig. 7, the high mechanical strength modularized axial flux motor according to this embodiment includes a modularized stator 1, a permanent magnet rotor 2, a housing 3, a stator side end cap 4, a rotating shaft 5, and a rotor side end cap 8, where the modularized stator 1 is unilaterally disposed, an outer circular end surface is fixed on an inner wall of the stator side end cap 4, the permanent magnet rotor 2 is fixed on the rotating shaft 5, and the rotating shaft 5 is rotationally connected to the stator side end cap 4 through a first bearing 6, and rotationally connected to the other side end cap 8 through a second bearing 7. An air gap is arranged between the permanent magnet rotor 2 and the annular end face of the modular stator 1, and the length of the air gap is L. A gap is left between the permanent magnet rotor 2 and the end cover 8.
As shown in fig. 8, the m-phase Q-slot modular stator 1 includes Q identical winding tooth modules 101, a concentrated winding 102 is wound on each winding tooth module 101, m is greater than or equal to 3, m is a positive integer, and Q is a positive integer. The modular stator 1 and the end cover 4 adopt a radial dovetail groove connection mode. As in the previous embodiment.
The permanent magnet rotor 2 includes a rotor core 201 and p counter-pole permanent magnets 202, p being a positive integer. The rotor core 201 is disc-shaped, the permanent magnets 202 are arranged on the disc end face of one side of the rotor core 201 opposite to the stator 1 and are uniformly distributed in a radial shape by taking the rotating shaft 5 as the center, the permanent magnets 202 can be magnetized in parallel along the axial direction or in a sectional special-shaped array, and the special-shaped array can adopt a structure of 2, 3 or 4 permanent magnets per pole. The permanent magnet 202 and the rotor core 201 are connected in a radial dovetail groove manner.
Example 7: the present embodiment is described with reference to fig. 7, 8, and 9, and the present embodiment is different from embodiment 6 in that the permanent magnet 202 adopts an axially parallel magnetizing structure, and the magnetizing directions of two adjacent poles are opposite. The other composition and the connection manner were the same as in example 6.
Example 8: the embodiment is described with reference to fig. 7, 8, and 10, and the difference between the embodiment and embodiment 6 is that the permanent magnet 202 has a special-shaped array structure with 2 blocks per pole, one pole is formed by 1 axial magnetizing permanent magnet and 1 tangential magnetizing permanent magnet distributed at intervals, and the pole arc coefficient of the axial magnetizing permanent magnet is αp1The pole arc coefficient of the permanent magnet of the tangential magnetizing permanent magnet is 1-alphap1And the magnetizing directions of two adjacent poles are opposite. The other composition and the connection manner were the same as in example 6.
Example 9: the embodiment is described with reference to fig. 7, 8, and 11, and the difference between the embodiment and embodiment 6 is that the permanent magnet 202 has a special-shaped array structure with 3 blocks per pole, one pole is formed by 1 axial magnetizing permanent magnet, 1 β -angle magnetizing permanent magnet, and 1- β -angle magnetizing permanent magnet distributed at intervals, and the pole arc coefficient of the axial magnetizing permanent magnet is αp1Beta angle chargerThe pole arc coefficient of the magnetic permanent magnet and the-beta angle magnetizing permanent magnet is
Figure BDA0002734334800000081
The magnetizing directions of two adjacent poles are opposite. The other composition and the connection manner were the same as in example 6.
Example 10: the embodiment is described with reference to fig. 7, 8, and 12, and is different from embodiment 6 in that the permanent magnet 202 has a special-shaped array structure with 4 blocks per pole, one pole is formed by 1 axial magnetizing permanent magnet, 1 β -angle magnetizing permanent magnet, 1 tangential magnetizing permanent magnet, and 1- β -angle magnetizing permanent magnet distributed at intervals, and the pole arc coefficient of the axial magnetizing permanent magnet is αp1The pole arc coefficient of the tangential magnetizing permanent magnet is alphap2The coefficient of polar arc of the beta angle magnetizing permanent magnet and the-beta angle magnetizing permanent magnet is
Figure BDA0002734334800000091
The magnetizing directions of two adjacent poles are opposite. The other composition and the connection manner were the same as in example 6.
In embodiments 1-10, the winding tooth module 101 is made of a silicon steel sheet or SMC soft magnetic composite material; the winding 102 is formed by winding a flat copper wire or a round copper wire, wherein the flat copper wire can improve the slot fullness rate; the rotating shaft 5 is made of a magnetic conductive material or a non-magnetic conductive material; the permanent magnet 202 is made of ferrite, samarium cobalt or neodymium iron boron.
The many features and advantages of these embodiments are apparent from the detailed specification, and thus, it is intended by the appended claims to cover all such features and advantages of these embodiments which fall within the true spirit and scope thereof. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the embodiments of the invention to the exact construction and operation illustrated and described, and accordingly, all suitable modifications and equivalents may be resorted to, falling within the scope thereof.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
The invention has not been described in detail and is in part known to those of skill in the art.

Claims (9)

1. A high-mechanical-strength modular axial flux motor is characterized by comprising two modular stators, two permanent magnet rotors, a machine shell, end covers and a rotating shaft, wherein the two modular stators are respectively fixed on the inner walls of a left end cover and a right end cover; the rotating shaft is rotatably connected with the end covers at two sides through bearings, and an air gap is formed between the permanent magnet rotor and the modular stator; the modularized stator is provided with Q slots and comprises Q identical winding tooth modules, one side of each winding tooth module is wound with a concentrated winding, the number of winding phases is m, m is more than or equal to 3, and m is a positive integer; the modularized stator is connected with the end cover through a dovetail groove; the permanent magnet rotor comprises a rotor iron core and p antipodal permanent magnets, p is a positive integer, the rotor iron core is disc-shaped, the permanent magnets are symmetrically arranged on the end faces of the discs on the two sides, and the permanent magnets are connected with the rotor iron core through dovetail grooves.
2. A high-mechanical-strength modular axial flux motor is characterized by comprising a modular stator, a permanent magnet rotor, a machine shell, end covers and a rotating shaft, wherein one modular stator is fixed on the inner wall of the end cover on one side, and the permanent magnet rotor is fixed on the rotating shaft; the rotating shaft is rotatably connected with the end covers at two sides through bearings, and an air gap is formed between the permanent magnet rotor and the modular stator; the modularized stator is provided with Q slots and comprises Q identical winding tooth modules, one side of each winding tooth module is wound with a concentrated winding, the number of winding phases is m, m is more than or equal to 3, and m is a positive integer; the modularized stator is connected with the end cover through a dovetail groove; the permanent magnet rotor comprises a rotor core and p antipodal permanent magnets, p is a positive integer, the rotor core is disc-shaped, the permanent magnets are arranged on the end face, opposite to the modularized stator, of the disc, of the rotor core, and the permanent magnets are connected with the rotor core through dovetail grooves.
3. The modular axial-flux electric machine of claim 1 or 2, wherein adjacent winding tooth modules of the modular stator are connected through slots to form a disk structure, and each winding tooth module has a dovetail groove in a radial direction on one side and a T-shaped convex tooth in a radial direction on the other side.
4. The axial flux motor of claim 1 or 2, wherein the permanent magnets on the rotor core are uniformly distributed in a radial pattern around the rotating shaft, the permanent magnets are magnetized in parallel along the axial direction or in a segmented irregular array, and the magnetizing directions of two adjacent poles are opposite.
5. The modular axial flux machine of claim 4, wherein each pole of said permanent magnets is configured as a 2-piece heteromorphic array, each pole comprises 1 radially magnetized permanent magnet and 1 tangentially magnetized permanent magnet distributed at intervals, and the pole arc coefficient of said radially magnetized permanent magnet is αp1The pole arc coefficient of the tangential magnetizing permanent magnet is 1-alphap1。
6. The modular axial flux machine of claim 4, wherein each pole of said permanent magnet is configured as a 3-piece special-shaped array, each pole comprises 1 radial magnetizing permanent magnet, 1 β -angle magnetizing permanent magnet and 1- β -angle magnetizing permanent magnet, and the pole arc coefficient of said radial magnetizing permanent magnet is αp1The pole arc coefficients of the beta angle magnetizing permanent magnet and the-beta angle magnetizing permanent magnet are as follows
Figure FDA0002734334790000021
Wherein the beta angle is the included angle between the magnetizing direction and the radial direction.
7. The modular axial flux electric machine of claim 4, wherein each pole of said permanent magnets is configured as a 4-piece special-shaped array, each pole comprising 1 radial magnetizing permanent magnet, 1 beta angle magnetizing permanent magnet, and 1 tangential magnetizing permanent magnetThe permanent magnet is formed by distributing 1-beta angle magnetizing permanent magnet at intervals, and the pole arc coefficient of the radial magnetizing permanent magnet is alphap1The pole arc coefficient of the tangential magnetizing permanent magnet is alphap2The pole arc coefficients of the beta angle magnetizing permanent magnet and the-beta angle magnetizing permanent magnet are as follows
Figure FDA0002734334790000022
8. The modular axial-flux electric machine of claim 6 or 7, wherein β is in the range of 20-70 degrees.
9. The modular axial flux electric machine of claim 4, wherein said winding tooth modules are made of silicon steel sheet or SMC soft magnetic composite material; the concentrated winding is formed by winding a flat copper wire or a round copper wire; the permanent magnet is made of ferrite, samarium cobalt or neodymium iron boron.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113241866A (en) * 2021-06-09 2021-08-10 武汉环益电机智能科技有限公司 Disc type permanent magnet motor stator and rotor unit with magnetic gathering structure

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1596496A (en) * 2001-11-29 2005-03-16 雅马哈发动机株式会社 Axial gap type rotating electric machine
CN102656772A (en) * 2009-11-30 2012-09-05 富士通将军股份有限公司 Axial gap motor and pump device
CN103001341A (en) * 2012-11-19 2013-03-27 腾达电动科技镇江有限公司 Iron core fixing structure of disc type motor
CN206894380U (en) * 2017-07-03 2018-01-16 苏州英磁新能源科技有限公司 A kind of new fixing groove disk type electric motor rotor and motor
CN107612260A (en) * 2017-10-10 2018-01-19 武汉索特南洋电机有限公司 End cap and iron core fixing structure and disc type electric machine
CN108432089A (en) * 2016-01-14 2018-08-21 万络机电公司 The stator for axial magnetic flux machinery with the track ring being made of module
CN109194070A (en) * 2018-09-07 2019-01-11 华中科技大学 A kind of assembled stator and its assembling method of axial flux permanent magnet motor
CN111181261A (en) * 2020-02-29 2020-05-19 日立电梯电机（广州）有限公司 Axial flux motor stator and axial flux permanent magnet synchronous motor

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1596496A (en) * 2001-11-29 2005-03-16 雅马哈发动机株式会社 Axial gap type rotating electric machine
CN102656772A (en) * 2009-11-30 2012-09-05 富士通将军股份有限公司 Axial gap motor and pump device
CN103001341A (en) * 2012-11-19 2013-03-27 腾达电动科技镇江有限公司 Iron core fixing structure of disc type motor
CN108432089A (en) * 2016-01-14 2018-08-21 万络机电公司 The stator for axial magnetic flux machinery with the track ring being made of module
CN206894380U (en) * 2017-07-03 2018-01-16 苏州英磁新能源科技有限公司 A kind of new fixing groove disk type electric motor rotor and motor
CN107612260A (en) * 2017-10-10 2018-01-19 武汉索特南洋电机有限公司 End cap and iron core fixing structure and disc type electric machine
CN109194070A (en) * 2018-09-07 2019-01-11 华中科技大学 A kind of assembled stator and its assembling method of axial flux permanent magnet motor
CN111181261A (en) * 2020-02-29 2020-05-19 日立电梯电机（广州）有限公司 Axial flux motor stator and axial flux permanent magnet synchronous motor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113241866A (en) * 2021-06-09 2021-08-10 武汉环益电机智能科技有限公司 Disc type permanent magnet motor stator and rotor unit with magnetic gathering structure

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Application publication date: 20210209