Axial flux motors and electrical equipment

Abstract

The present invention proposes an axial flux motor and electrical equipment, wherein the axial flux motor comprises: a first stator, the first stator comprising a plurality of first stator teeth, a first stator slot between adjacent first stator teeth, a first groove provided on the side of the first stator teeth facing the rotor, the first groove separating the first stator teeth into a plurality of first secondary teeth; a rotor, located on one side of the first stator; and a second stator, located on the side of the rotor facing away from the first stator, the second stator comprising a plurality of second stator teeth, a second stator slot between adjacent second stator teeth, the first groove and the second stator teeth being arranged in correspondence. The axial flux motor proposed by the present invention improves the electromagnetic torque and power factor of the axial flux motor.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and in particular to an axial flux motor and an electrical device. Background Art

[0002] In related technologies, the structure of radial motors has reached a bottleneck. How to improve the torque and power of the motor by changing the motor structure has become a technical problem that needs to be solved urgently. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art.

[0004] To this end, a first aspect of the present invention provides an axial flux motor.

[0005] A second aspect of the present invention provides an electrical device.

[0006] In view of this, according to a first aspect of the present invention, the present invention proposes an axial flux motor, comprising: a first stator, the first stator comprising a plurality of first stator teeth, a first stator slot being provided between adjacent first stator teeth, a first groove being provided on one side of the first stator tooth, the first groove dividing the first stator tooth into a plurality of first sub-teeth; a rotor, located on one side of the first stator, the first groove being provided on the side of the first stator tooth facing the rotor; a second stator, arranged on a side of the rotor facing away from the first stator, the second stator comprising a plurality of second stator teeth, a second stator slot being provided between adjacent second stator teeth, and the first groove and the second stator tooth being arranged correspondingly.

[0007] The axial flux motor proposed in the present invention includes a first stator, a rotor and a second stator, and the rotor is located between the first stator and the second stator. In addition, the first stator includes a plurality of first stator teeth, and the plurality of first stator teeth are arranged toward the rotor. The second stator includes a plurality of second stator teeth, and the plurality of second stator teeth are arranged toward the rotor. Then, the rotor is selected between the first stator and the second stator through electromagnetic induction.

[0008] In addition, a first groove is provided on the side of the first stator tooth facing the rotor, and the first groove divides the first stator tooth into a plurality of first auxiliary teeth, thereby increasing the pulsation frequency of the tooth slot torque and thus increasing the torque of the electrode.

[0009] In addition, the first groove on the first stator tooth of the first stator corresponds to the second stator tooth of the second stator, so that the cooperation of the first stator and the second stator forms a magnetic circuit with small magnetic resistance, thereby enhancing the main magnetic field, reducing magnetic leakage, improving the electromagnetic torque of the axial flux motor, and improving the power factor of the axial flux motor.

[0010] In addition, the axial flux motor in the above technical solution provided by the present invention may also have the following additional technical features:

[0011] On the basis of the above technical solution, further, the first stator slots and the second stator teeth are arranged correspondingly.

[0012] In this technical solution, the first stator slot and the second stator tooth are arranged correspondingly, and the first groove and the second stator tooth of the second stator are further arranged correspondingly. Furthermore, the first stator slot and the second stator tooth are also made opposite to each other, so that all the slots on the first stator are opposite to the second stator teeth on the second stator teeth, further reducing the magnetic resistance of the magnetic circuit between the first stator and the second stator, enhancing the main magnetic field, reducing magnetic leakage, so that the axial flux motor has a higher electromagnetic torque, and the axial flux motor has a higher power factor.

[0013] On the basis of any of the above technical solutions, further, the number of the first auxiliary teeth is equal to the number of the second stator teeth.

[0014] In this technical solution, the number of first auxiliary teeth is the same as the number of second auxiliary teeth, so that a slot of the first stator corresponds to a second stator tooth of the second stator, so that the distribution of the magnetic field formed by the first stator and the second stator is more uniform, the variation of the magnetic field is reduced, the superposition of the pulsation effect of the tooth slot torque is improved, and the torque of the axial flux motor is improved.

[0015] On the basis of any of the above technical solutions, further, the first stator further includes: a first tooth body, the first stator tooth is provided on the first tooth body, and the first stator tooth and the first stator tooth body are a split structure.

[0016] In this technical solution, the first stator also includes a first tooth body, and the first stator tooth is arranged on the first tooth body, and then the split structure of the first stator and the first tooth body is utilized. The winding is usually wound on the first tooth body, and the width of the first stator tooth is usually larger than the first tooth body. Therefore, the first stator tooth and the first tooth body are set as a split structure, which facilitates winding on the first tooth body, reduces production difficulty, and improves production efficiency.

[0017] On the basis of any of the above technical solutions, further, the first stator further includes: a first substrate, the first tooth body is provided on the first substrate, and the first tooth body and the first substrate are an integrated structure.

[0018] In this technical solution, the first stator also includes a first substrate, and the first tooth body is arranged on the first substrate, so that the first substrate can form an overall limit for the first tooth body, and the first tooth body and the first substrate are an integrated structure, which is more conducive to the positioning of the first tooth body, and is also more conducive to the fixation of the first tooth body when winding.

[0019] Furthermore, the first tooth body and the first base plate are an integrated structure. The integrated structure can reduce production costs, improve production efficiency, and make the positioning of the first tooth body more precise.

[0020] On the basis of any of the above technical solutions, further, the first tooth body and the first stator tooth are bonded together.

[0021] In this technical solution, the first tooth body and the first stator tooth are connected by bonding, thereby reducing the difficulty of assembling the first stator tooth and the first tooth body, and can include the connection strength between the first stator tooth and the first tooth body.

[0022] On the basis of any of the above technical solutions, further, the second stator is a soft magnetic second stator.

[0023] In this technical solution, the second stator is a soft magnetic second stator, which is more conducive to forming a magnetic field between the first stator and the second stator.

[0024] On the basis of any of the above technical solutions, further, a second groove is formed on the second stator tooth, the second groove divides the second stator tooth into a plurality of second auxiliary teeth, and the first groove and the second auxiliary teeth are arranged correspondingly.

[0025] In this technical solution, a second groove is provided on the side of the second stator tooth facing the rotor, and the second groove divides the second stator tooth into multiple second auxiliary teeth, thereby utilizing the second groove to increase the pulsation frequency of the tooth slot torque and thereby increase the torque of the electrode.

[0026] In addition, the second groove on the second stator tooth of the second stator corresponds to the first stator tooth of the first stator, so that the cooperation of the first stator and the second stator forms a magnetic circuit with small magnetic resistance, thereby enhancing the main magnetic field, reducing magnetic leakage, improving the electromagnetic torque of the axial flux motor, and improving the power factor of the axial flux motor.

[0027] Moreover, the first stator and the second stator have the same structure, which can improve the balance of the magnetic field between the first stator and the second stator, making the magnetic force on both sides of the rotor more uniform, further improving the electromagnetic torque of the axial flux motor, and improving the power factor of the axial flux motor.

[0028] On the basis of any of the above technical solutions, further, the number of the first auxiliary teeth is equal to the number of the second auxiliary teeth.

[0029] In this technical solution, the number of first auxiliary teeth is equal to the number of second auxiliary teeth, and thus the number of first stator slots is equal to the number of second stator slots, the number of first grooves is equal to the number of second grooves, and the sum of the number of first grooves and the number of first stator slots is equal to the number of first auxiliary teeth, and the sum of the number of second grooves and the number of second stator slots is equal to the number of second auxiliary teeth, and thus each first groove and each slot opening of the first stator slot corresponds to a second auxiliary tooth, and each second groove and each slot opening of the second stator slot corresponds to a first auxiliary tooth, thereby further reducing the magnetic circuit magnetic resistance of the axial flux motor, enhancing the main magnetic field, reducing magnetic leakage, improving the electromagnetic torque of the axial flux motor, and improving the power factor of the axial flux motor.

[0030] On the basis of any of the above technical solutions, further, the second stator further includes: a second tooth body, the second stator teeth are arranged on the second tooth body, and the second stator teeth and the second stator tooth body are a split structure.

[0031] In this technical solution, the second stator also includes a second tooth body, and the second stator teeth are arranged on the second tooth body, and then the split structure of the second stator and the second tooth body is utilized. The winding is usually wound on the second tooth body, and the width of the second stator tooth is usually larger than the second tooth body. Therefore, the second stator tooth and the second tooth body are set as a split structure, which facilitates winding on the second tooth body, reduces production difficulty, and improves production efficiency.

[0032] On the basis of any of the above technical solutions, further, the second stator further includes: a second substrate, the second tooth body is provided on the second substrate, and the second tooth body and the second substrate are an integrated structure.

[0033] In this technical solution, the second stator also includes a second substrate, and the second tooth body is arranged on the second substrate, so that the second substrate can form an overall limit for the second tooth body, and the second tooth body and the second substrate are an integrated structure, which is more conducive to the positioning of the second tooth body, and is also more conducive to the fixation of the second tooth body during winding.

[0034] Furthermore, the second tooth body and the second base plate are an integrated structure. The integrated structure can reduce production costs, improve production efficiency, and make the positioning of the second tooth body more precise.

[0035] On the basis of any of the above technical solutions, further, the second tooth body and the second stator tooth are bonded together.

[0036] In this technical solution, the second tooth body and the second stator tooth are connected by bonding, thereby reducing the difficulty of assembling the second stator tooth and the second tooth body, and can include the connection strength between the second stator tooth and the second tooth body.

[0037] On the basis of any of the above technical solutions, further, the number of poles of the rotor is 2×Pr, the number of teeth of the first stator is Z1, and the number of poles of the winding of the first stator is 2×Ps, wherein |Pr±2×Z1|=Ps.

[0038] In this technical solution, the number of poles of the rotor is 2×Pr, that is, the number of pole pairs of the rotor is Pr, the number of teeth of the first stator is Z1, and the number of poles of the winding of the first stator is 2×Ps, that is, the number of pole pairs of the winding of the first stator is Ps, wherein |Pr±2Z1|=Ps, and thus the number of pole pairs of the winding of the first stator and the number of pole pairs of the rotor form a difference relationship, and by adjusting the number of teeth of the first stator, the number of poles of the winding of the first stator and the number of poles of the rotor, the axial flux electrode is made more stable and the torque of the electrode is improved.

[0039] On the basis of any of the above technical solutions, the rotor further includes: a rotor core; a plurality of magnetic parts, which are arranged on the rotor core; an outer ring, which is sleeved on the outside of the rotor core and the magnetic parts, and the outer ring is a non-magnetic outer ring.

[0040] In this technical solution, the rotor includes a rotor core and multiple magnetic parts, and the multiple magnetic parts are arranged on the rotor core. In addition, the outer ring is sleeved on the outside of the rotor core and the multiple magnetic parts. The outer ring is made of non-magnetic material, thereby reducing the outer ring's consumption of the magnetic field, making the magnetic field more standardized, and improving the torque and power density of the motor.

[0041] According to a second aspect of the present invention, the present invention proposes an electrical device, comprising: an axial flux motor as proposed in any one of the above technical solutions.

[0042] The electrical device proposed in the present invention includes the axial flux motor proposed in any one of the above technical solutions, and therefore has all the beneficial effects of the axial flux motor proposed in any one of the above technical solutions, which will not be listed one by one here.

[0043] Additional aspects and advantages of the invention will become apparent from the description which follows, or may be learned by practice of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0045] Figure 1 A schematic structural diagram of an axial flux motor provided by an embodiment of the present invention is shown;

[0046] Figure 2 An exploded view of an axial flux motor provided by one embodiment of the present invention is shown;

[0047] Figure 3A schematic structural diagram of an axial flux motor provided by an embodiment of the present invention is shown;

[0048] Figure 4 An exploded view of an axial flux motor provided by one embodiment of the present invention is shown;

[0049] Figure 5 A schematic structural diagram of a first stator of an axial flux motor provided by one embodiment of the present invention is shown;

[0050] Figure 6 An exploded view of a first stator of an axial flux motor provided by one embodiment of the present invention is shown;

[0051] Figure 7 A schematic structural diagram of a second stator of an axial flux motor provided by one embodiment of the present invention is shown;

[0052] Figure 8 A schematic structural diagram of a second stator of an axial flux motor provided by one embodiment of the present invention is shown;

[0053] Figure 9 An exploded view of a second stator of an axial flux motor provided by one embodiment of the present invention is shown;

[0054] Figure 10 A schematic structural diagram of a rotor of an axial flux motor provided by one embodiment of the present invention is shown;

[0055] Figure 11 An exploded view of a rotor of an axial flux motor provided by one embodiment of the present invention is shown;

[0056] Figure 12 A partial cross-sectional view of an axial flux motor according to an embodiment of the present invention is shown;

[0057] Figure 13 Shown as Figure 1 A comparison diagram of motor torque of the axial flux motor and a motor in related art under the same current environment is shown;

[0058] Figure 14 Shown as Figure 3 The figure shows a comparison of the motor torque of the axial flux motor and the motor in the related art under the same current environment.

[0059] in, Figures 1 to 12 The corresponding relationship between the reference numerals and component names is as follows:

[0060] 100 axial flux motor, 110 first stator, 112 first stator tooth, 1122 first groove, 1124 first auxiliary tooth, 114 first stator slot, 116 first tooth body, 118 first base plate, 120 rotor, 122 outer ring, 124 rotor core, 126 magnetic component, 130 second stator, 132 second stator tooth, 1322 second groove, 1324 second auxiliary tooth, 134 second stator slot, 136 second tooth body, 138 second base plate, 140 first winding, 150 second winding. DETAILED DESCRIPTION

[0061] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments of the present application and the features therein can be combined with each other.

[0062] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0063] Refer to the following Figures 1 to 14 The axial flux motor 100 and the electrical equipment provided according to some embodiments of the present invention are described.

[0064] Example 1:

[0065] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 12 As shown, the present invention provides an axial flux motor 100, comprising: a first stator 110, a rotor 120 and a second stator 130, wherein the first stator 110 and the second stator 130 are arranged approximately in parallel and spaced apart, and the rotor 120 is arranged between the first stator 110 and the second stator 130, and then when the first winding 140 on the first stator 110 is energized, according to the principle of electromagnetic conversion, a magnetic field is generated, thereby driving the rotor 120 to rotate.

[0066] The first stator 110 includes a plurality of first stator teeth 112, with first stator slots 114 between adjacent first stator teeth 112. The plurality of first stator teeth 112 are annularly spaced, with the openings of the first stator slots 114 facing the rotor 120. Furthermore, the first stator teeth 112 are provided with first grooves 1122, with the openings of the first grooves 1122 facing the rotor 120. The first grooves 1122 separate the first stator teeth 112 into a plurality of first auxiliary teeth 1124. This is equivalent to increasing the number of slots in the first stator 110 without increasing the number of first windings 140. Consequently, while reducing the number of first windings 140, the number of slots in the first stator 110 is increased, thereby increasing the pulsation frequency of the cogging torque.

[0067] The second stator 130 includes a plurality of second stator teeth 132 , and second stator slots 134 are provided between adjacent second stator teeth 132 . The opening direction of the second stator slots 134 faces the rotor 120 , and the first stator teeth 112 face the second stator 130 , and the second stator teeth 132 face the first stator 110 .

[0068] Furthermore, the first groove 1122 is provided corresponding to the second stator tooth 132 , that is, the opening direction of the first stator tooth 112 faces the second stator tooth 132 .

[0069] The axial flux motor 100 provided by the present invention includes a first stator 110, a rotor 120 and a second stator 130. The rotor 120 is located between the first stator 110 and the second stator 130, and the first stator 110 includes a plurality of first stator teeth 112, and the plurality of first stator teeth 112 are arranged toward the rotor 120. The second stator 130 includes a plurality of second stator teeth 132, and the plurality of second stator teeth 132 are arranged toward the rotor 120. Therefore, the rotor 120 is selected between the first stator 110 and the second stator 130 through electromagnetic induction.

[0070] In addition, a first groove 1122 is provided on the side of the first stator tooth 112 facing the rotor 120. The first groove 1122 divides the first stator tooth 112 into a plurality of first auxiliary teeth 1124. The first groove 1122 is used to increase the pulsation frequency of the cogging torque, thereby increasing the torque of the electrode.

[0071] In addition, the first groove 1122 on the first stator tooth 112 of the first stator 110 corresponds to the second stator tooth 132 of the second stator 130, so that the cooperation of the first stator 110 and the second stator 130 forms a magnetic circuit with small magnetic resistance, thereby enhancing the main magnetic field, reducing magnetic leakage, improving the electromagnetic torque of the axial flux motor 100, and improving the power factor of the axial flux motor 100.

[0072] The first stator teeth 112 may have a fan-shaped structure.

[0073] Example 2:

[0074] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 12 As shown, based on the first embodiment, further, the slot opening of the first stator slot 114 faces the second stator tooth 132 .

[0075] In this embodiment, the first stator slots 114 and the second stator teeth 132 are arranged correspondingly, and the first grooves 1122 and the second stator teeth 132 of the second stator 130 are further arranged correspondingly. Furthermore, the first stator slots 114 and the second stator teeth 132 are also arranged opposite to each other, so that all the slots on the first stator 110 are opposite to the second stator teeth 132 on the second stator teeth 132, thereby further reducing the magnetic resistance of the magnetic circuit between the first stator 110 and the second stator 130, enhancing the main magnetic field, reducing magnetic leakage, so that the axial flux motor 100 has a higher electromagnetic torque, and the axial flux motor 100 has a higher power factor.

[0076] Specifically, a plurality of first grooves 1122 and first stator slots 114 may correspond to the same second stator tooth 132 , or one first groove 1122 or one first stator slot 114 may correspond to one second stator tooth 132 .

[0077] Example 3:

[0078] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 7 As shown, on the basis of Example 1 or Example 2, further, the sum of the number of second stator teeth 132 is an integer multiple of the first stator teeth 112. Specifically, the same first groove 1122 is provided on each first stator tooth 112, and thus each first stator tooth 112 can be separated into the same number of first auxiliary teeth 1124. The number of second stator teeth 132 is the same as the number of first auxiliary teeth 1124. Specifically, one, two, three, four or five first grooves 1122 can be provided on each first stator tooth 112.

[0079] In this embodiment, the number of the first auxiliary teeth 1124 and the number of the second auxiliary teeth 1324 are the same, so that a slot of the first stator 110 corresponds to a second stator tooth 132 of the second stator 130, so that the distribution of the magnetic field formed by the first stator 110 and the second stator 130 is more uniform, the variation of the magnetic field is reduced, the superposition of the pulsation effect of the tooth slot torque is improved, and the torque of the axial flux motor 100 is improved.

[0080] Specifically, taking the example of each first stator tooth 112 being provided with a first groove 1122, the first stator tooth 112 can be divided into two first auxiliary teeth 1124, and the number of second stator teeth 132 is equal to the number of first auxiliary teeth 1124. This configuration ensures that the number of second stator teeth 132 is equal to the sum of the number of first grooves 1122 and the number of first stator slots 114. In other words, the number of second stator teeth 132 is equal to the number of slots on the first stator 110. Furthermore, the slots on the first stator 110 are aligned with different second stator teeth 132, that is, the first grooves 1122 and the first stator slots 114 are aligned with different second stator teeth 132. Therefore, when the first winding 140 of the first stator 110 is energized, the overall polarity can correspond to different second stator teeth 132 of the second stator 130, thereby making the overall magnetic field of the axial flux more uniform and improving the efficiency of the axial flux motor 100.

[0081] Specifically, the second stator 130 is not provided with the second winding 150 .

[0082] like Figure 13 As shown, under the structure, the motor torque of the axial flux motor 100 provided by the present invention and the radial motor of the same volume in the related art are compared under the same current. The motor torque of the axial flux motor 100 provided by the present invention is greater than the motor torque of the radial motor in the related art within the current range of 0.2A to 2.2A.

[0083] Example 4:

[0084] like Figure 2 、 Figure 4 、 Figure 5 and Figure 6 As shown, on the basis of any one of Examples 1 to 3, further, the first stator 110 also includes: a first tooth body 116 that is splitly connected to the first stator tooth 112, specifically, each first stator tooth 112 is separately connected to a first tooth body 116, and the first winding 140 is wound on the first tooth body 116, wherein the first winding 140 can adopt centralized winding or distributed winding.

[0085] In this embodiment, the first stator 110 also includes a first tooth body 116, and the first stator tooth 112 is arranged on the first tooth body 116, and then the split structure of the first stator 110 and the first tooth body 116 is utilized. The winding is usually wound on the first tooth body 116, and the width of the first stator tooth 112 is usually greater than that of the first tooth body 116. Therefore, the first stator tooth 112 and the first tooth body 116 are set as a split structure, which facilitates winding on the first tooth body 116, reduces production difficulty, and improves production efficiency.

[0086] Specifically, the first tooth body 116 can adopt a columnar structure, and the first stator tooth 112 is arranged at one end of the first tooth body 116. When winding the first winding 140, the first stator tooth 112 and the first tooth body 116 can be separated. After the first winding 140 is wound on the first tooth body 116, the first tooth body 116 and the first stator tooth 112 are connected, thereby reducing the assembly difficulty and improving the production efficiency of the axial flux motor 100.

[0087] Specifically, first stator slots 114 are formed between adjacent first tooth bodies 116 .

[0088] Example 5:

[0089] like Figure 2 、 Figure 4 、 Figure 5 and Figure 6 As shown, on the basis of any one of Examples 1 to 4, the first stator 110 further includes: a first substrate 118 integrally connected to the first tooth body 116, and the first tooth body 116 is arranged in a ring shape on one side of the first substrate 118. Specifically, a through hole is provided in the middle of the first substrate 118, and multiple first tooth bodies 116 are surrounded by the circumference of the through hole.

[0090] In this embodiment, the first stator 110 also includes a first substrate 118, and the first tooth body 116 is arranged on the first substrate 118, so that the first substrate 118 can form an overall limit for the first tooth body 116, and the first tooth body 116 and the first substrate 118 are an integrated structure, which is more conducive to the positioning of the first tooth body 116, and is also more conducive to the fixation of the first tooth body 116 during winding.

[0091] Furthermore, the first tooth body 116 and the first base plate 118 are an integrated structure. The integrated structure can reduce production costs, improve production efficiency, and make the positioning of the first tooth body 116 more precise.

[0092] The first tooth body 116 and the first base plate 118 can be formed by pressing a soft magnetic material, thereby achieving one-step molding, improving production efficiency and reducing production costs. Furthermore, the first stator tooth 112 is also formed by pressing a soft magnetic material.

[0093] Example 6:

[0094] On the basis of Example 4 or Example 5, further, the first tooth body 116 and the first stator tooth 112 are bonded together by an adhesive.

[0095] In this embodiment, the first tooth body 116 and the first stator tooth 112 are connected by bonding, thereby reducing the difficulty of assembling the first stator tooth 112 and the first tooth body 116 , and can include the connection strength between the first stator tooth 112 and the first tooth body 116 .

[0096] Specifically, when winding the first winding 140, the first stator tooth 112 and the first tooth body 116 can be separated. After the first winding 140 is wound on the first tooth body 116, the first tooth body 116 and the first stator tooth 112 are connected by an adhesive, thereby reducing the difficulty of assembly and improving the production efficiency of the axial flux motor 100.

[0097] Example 7:

[0098] like Figure 7 As shown, on the basis of any one of Examples 1 to 6, further, the second stator 130 is a soft magnetic second stator 130, that is, the second stator 130 is entirely formed by pressing a soft magnetic material.

[0099] In this technical solution, the second stator 130 is a soft magnetic second stator 130, which further facilitates the formation of a magnetic field between the first stator 110 and the second stator 130. Furthermore, the second stator 130 can be formed in one step, thereby improving production efficiency and reducing production costs. The second stator 130 does not have a second winding 150.

[0100] Example 8:

[0101] like Figure 3 and Figure 4 As shown, based on any one of Examples 1 to 6, the second stator 130 further includes a plurality of second stator teeth 132, with second stator slots 134 formed between adjacent second stator teeth 132. The plurality of second stator teeth 132 are annularly spaced, with the openings of the second stator slots 134 facing the rotor 120. Furthermore, the second stator teeth 132 are provided with second grooves 1322, with the openings of the second grooves 1322 facing the rotor 120. The second grooves 1322 separate the second stator teeth 132 into a plurality of second auxiliary teeth 1324. This is equivalent to increasing the number of slots in the second stator 130 without increasing the number of second windings 150. Thus, while reducing the number of second windings 150, the number of slots in the second stator 130 is increased, thereby increasing the pulsation frequency of the cogging torque.

[0102] Furthermore, the first groove 1122 is provided corresponding to the second auxiliary tooth 1324 , that is, the opening direction of the first stator tooth 112 faces the second auxiliary tooth 1324 .

[0103] The second stator teeth 132 may have a fan-shaped structure.

[0104] In this embodiment, a second groove 1322 is provided on the side of the second stator tooth 132 facing the rotor 120. The second groove 1322 divides the second stator tooth 132 into a plurality of second auxiliary teeth 1324. The second groove 1322 is used to increase the pulsation frequency of the tooth slot torque, thereby increasing the torque of the electrode.

[0105] In addition, the second groove 1322 on the second stator tooth 132 of the second stator 130 corresponds to the first stator tooth 112 of the first stator 110, so that the cooperation between the first stator 110 and the second stator 130 forms a magnetic circuit with small magnetic resistance, thereby enhancing the main magnetic field, reducing magnetic leakage, improving the electromagnetic torque of the axial flux motor 100, and improving the power factor of the axial flux motor 100.

[0106] Moreover, the first stator 110 and the second stator 130 have the same structure, which can improve the balance of the magnetic field between the first stator 110 and the second stator 130, making the magnetic force on both sides of the rotor 120 more uniform, further improving the electromagnetic torque of the axial flux motor 100, and improving the power factor of the axial flux motor 100.

[0107] Specifically, the same second groove 1322 is set on each second stator tooth 132, and thus each second stator tooth 132 can be separated into the same number of second auxiliary teeth 1324. The number of second auxiliary teeth 1324 is the same as the number of first auxiliary teeth 1124. Specifically, one, two, three, four or five second grooves 1322 can be set on each second stator tooth 132.

[0108] Example 9:

[0109] like Figure 3 and Figure 4 As shown, based on Example 8, further, the number of the first auxiliary teeth 1124 is equal to the number of the second auxiliary teeth 1324.

[0110] In this embodiment, the number of first auxiliary teeth 1124 is equal to the number of second auxiliary teeth 1324, and thus the number of first stator slots 114 is equal to the number of second stator slots 134, and the number of first grooves 1122 is equal to the number of second grooves 1322. Moreover, the sum of the number of first grooves 1122 and the number of first stator slots 114 is equal to the number of first auxiliary teeth 1124, and the sum of the number of second grooves 1322 and the number of second stator slots 134 is equal to the number of second auxiliary teeth 1324. Thus, each notch of the first groove 1122 and the first stator slot 114 corresponds to a second auxiliary tooth 1324, thereby further reducing the magnetic circuit magnetic resistance of the axial flux motor 100, enhancing the main magnetic field, reducing magnetic leakage, improving the electromagnetic torque of the axial flux motor 100, and improving the power factor of the axial flux motor 100.

[0111] Specifically, taking the example of each second stator tooth 132 being provided with a second groove 1322, the second stator tooth 132 can be divided into two second auxiliary teeth 1324, and the number of the second auxiliary teeth 1324 is equal to the number of the first auxiliary teeth 1124. This configuration ensures that the number of second auxiliary teeth 1324 is equal to the sum of the number of first grooves 1122 and the number of first stator slots 114. In other words, the number of second auxiliary teeth 1324 is equal to the number of slots on the first stator 110. Furthermore, the slots on the first stator 110 directly correspond to different second auxiliary teeth 1324, that is, the first groove 1122 and the first stator slot 114 directly correspond to different second auxiliary teeth 1324. Therefore, when the first winding 140 of the first stator 110 is energized, the overall polarity can correspond to different second auxiliary teeth 1324 of the second stator 130, thereby making the overall magnetic field of the axial flux more uniform and improving the efficiency of the axial flux motor 100.

[0112] Moreover, based on such an arrangement, the first auxiliary teeth 1124 of the first stator 110 and the second auxiliary teeth 1324 on the second stator 130 are actually arranged in an alternating manner, so that while the first grooves 1122 and the first stator slots 114 on the first stator 110 are facing the second auxiliary teeth 1324, the second grooves 1322 and the second stator slots 134 on the second stator 130 are also facing the first auxiliary teeth 1124.

[0113] Moreover, the sum of the number of the second grooves 1322 and the number of the second stator slots 134 is equal to the number of the first auxiliary teeth 1124, and the sum of the number of the second grooves 1322 and the number of the second stator slots 134 is equal to the number of the first auxiliary teeth 1124. Thus, each slot of the second groove 1322 and the second stator slot 134 corresponds to a first auxiliary tooth 1124, thereby further reducing the magnetic circuit magnetic resistance of the axial flux motor 100, enhancing the main magnetic field, reducing magnetic leakage, improving the electromagnetic torque of the axial flux motor 100, and improving the power factor of the axial flux motor 100.

[0114] Specifically, taking the example of each second stator tooth 132 being provided with a second groove 1322, the second stator tooth 132 can be divided into two second auxiliary teeth 1324, and the number of the second auxiliary teeth 1324 is equal to the number of the first auxiliary teeth 1124. This configuration ensures that the number of the second auxiliary teeth 1324 is equal to the sum of the number of the first grooves 1122 and the number of the first stator slots 114, and the number of the first auxiliary teeth 1124 is equal to the sum of the number of the second grooves 1322 and the number of the second stator slots 134. In other words, the number of the second auxiliary teeth 1324 is equal to the number of the notches on the first stator 110, and the number of the first auxiliary teeth 1124 is equal to the number of the notches on the second stator 130, and the notches on the first stator 110 are respectively opposite to different second auxiliary teeth 1324. 324, that is, the first groove 1122 and the first stator slot 114 are respectively facing different second auxiliary teeth 1324, and the slots on the second stator 130 are respectively facing different first auxiliary teeth 1124, that is, the second groove 1322 and the second stator slot 134 are respectively facing different first auxiliary teeth 1124, and then when the first winding 140 of the first stator 110 is energized and the second winding 150 of the second stator 130 is energized, the overall magnetic field of the axial flux is made more uniform, thereby improving the efficiency of the axial flux motor 100.

[0115] like Figure 14 As shown, under the structure, the motor torque of the axial flux motor 100 provided by the present invention and the radial motor of the same volume in the related art are compared under the same current. The motor torque of the axial flux motor 100 provided by the present invention is greater than the motor torque of the radial motor in the related art within the current range of 0.2A to 2.2A.

[0116] Example 10:

[0117] like Figure 4 、 Figure 8 and Figure 9 As shown, on the basis of Example 8 or Example 9, further, the second stator 130 also includes: a second tooth body 136 that is splitly connected to the second stator tooth 132, specifically, each second stator tooth 132 is separately connected to a second tooth body 136, and the second winding 150 is wound on the second tooth body 136, wherein the second winding 150 can adopt centralized winding or distributed winding.

[0118] In this embodiment, the second stator 130 also includes a second tooth body 136, and the second stator tooth 132 is arranged on the second tooth body 136, and then utilizing the split structure of the second stator 130 and the second tooth body 136, the winding is usually wound on the second tooth body 136, and the width of the second stator tooth 132 is usually greater than that of the second tooth body 136. Therefore, the second stator tooth 132 and the second tooth body 136 are set as a split structure, which facilitates winding on the second tooth body 136, reduces production difficulty, and improves production efficiency.

[0119] Specifically, the second tooth body 136 can adopt a columnar structure, and the second stator tooth 132 is arranged at one end of the second tooth body 136. When winding the second winding 150, the second stator tooth 132 and the second tooth body 136 can be separated. After the second winding 150 is wound on the second tooth body 136, the second tooth body 136 and the second stator tooth 132 are connected, thereby reducing the difficulty of assembly and improving the production efficiency of the axial flux motor 100.

[0120] Specifically, second stator slots 134 are formed between adjacent second tooth bodies 136 .

[0121] Example 11:

[0122] like Figure 9 As shown, on the basis of any one of Examples 8 to 10, further, the second stator 130 also includes: a second substrate 138 integrally connected to the second tooth body 136, and the second tooth body 136 is arranged in a ring shape on one side of the second substrate 138. Specifically, a through hole is provided in the middle of the second substrate 138, and a plurality of second tooth bodies 136 surround the circumference of the through hole.

[0123] In this embodiment, the second stator 130 also includes a first substrate 118, and the second tooth body 136 is arranged on the second substrate 138, so that the second substrate 138 can form an overall limit for the second tooth body 136, and the second tooth body 136 and the second substrate 138 are an integrated structure, which is more conducive to the positioning of the second tooth body 136, and is also more conducive to the fixation of the second tooth body 136 when winding.

[0124] Furthermore, the second tooth body 136 and the second base plate 138 are an integrated structure. The integrated structure can reduce production costs, improve production efficiency, and make the positioning of the first tooth body 116 more accurate.

[0125] The second tooth body 136 and the second base plate 138 can be formed by pressing a soft magnetic material, thereby achieving one-step molding, improving production efficiency and reducing production costs. The second stator tooth 132 is also formed by pressing a soft magnetic material.

[0126] Example 12:

[0127] On the basis of Example 10 or Example 11, further, the second tooth body 136 and the second stator tooth 132 are bonded together by an adhesive.

[0128] In this embodiment, the second tooth body 136 and the second stator tooth 132 are connected by bonding, thereby reducing the difficulty of assembling the second stator tooth 132 and the second tooth body 136 , and can include the connection strength between the second stator tooth 132 and the second tooth body 136 .

[0129] Specifically, when winding the first winding 140, the second stator tooth 132 and the second tooth body 136 can be separated. After the second winding 150 is wound on the second tooth body 136, the second tooth body 136 and the second stator tooth 132 are connected by an adhesive, thereby reducing the difficulty of assembly and improving the production efficiency of the axial flux motor 100.

[0130] Example 13:

[0131] On the basis of Examples 1 to 12, further, the number of poles of the rotor 120 is 2Pr, the number of first stator teeth 112 of the first stator 110 is Z1, and the number of poles of the winding of the first stator 110 is 2Ps, wherein Pr+2×Z1=Ps or |Pr-2×Z1|=Ps.

[0132] In this embodiment, the number of poles of the rotor 120 is 2×Pr, that is, the number of pole pairs of the rotor 120 is Pr, the number of first stator teeth 112 of the first stator 110 is Z1, and the number of poles of the winding of the first stator 110 is 2×Ps, that is, the number of pole pairs of the winding of the first stator 110 is Ps, wherein |Pr±2×Z1|=Ps, and thus the number of pole pairs of the winding of the first stator 110 and the number of pole pairs of the rotor 120 form a difference relationship, and by adjusting the number of first stator teeth 112, the number of poles of the winding of the first stator 110 and the number of poles of the rotor 120, the axial flux electrode is made more stable and the torque of the electrode is improved.

[0133] The pole pair number Ps of the first stator 110 satisfies: Ps = |Pr±2×Z1|. The new harmonic components appearing in the air gap flux density can be used as the motor's operating harmonics, providing output torque for the motor, thereby effectively improving the motor's torque density. Under this constraint, the new harmonic components appearing in the air gap flux density can be used as the motor's operating harmonics, providing output torque for the motor, thereby effectively improving the motor's torque density.

[0134] Specifically, if Figure 5As shown, the number of rotor poles is 20, that is, 2×Pr=20, Pr=10, the number of first stator teeth is 6, that is, Z1=6, and then |10±2×6|=Ps, that is, Ps=2 or 22, that is, the number of pole pairs of the winding of the first stator Ps=2 or 22, and the number of poles of the winding of the first stator is 4 or 44.

[0135] For another example: the number of rotor poles is 40, that is, 2×Pr=40, Pr=20, the number of first stator teeth is 8, that is, Z1=8, and then |20±2×8|=Ps, that is, Ps=4 or 36, that is, the number of pole pairs of the winding of the first stator Ps=4 or 36, and the number of poles of the winding of the first stator is 8 or 72.

[0136] Example 14:

[0137] like Figure 10 and Figure 11 As shown, on the basis of Examples 1 to 12, the rotor 120 further includes: a rotor core 124, a magnetic part 126 and an outer ring 122, and the outer ring 122 is sleeved on the outside of the rotor core 124 and the magnetic part 126. Specifically, the rotor core 124 includes a plurality of core blocks, and the core blocks and the magnetic part 126 are alternately arranged to form a ring structure. The outer ring 122 is sleeved on the outside of the core blocks and the magnetic part 126, thereby achieving the fixation of the rotor core 124 and the magnetic part 126.

[0138] In this embodiment, the rotor 120 includes a rotor core 124 and a plurality of magnetic members 126. The plurality of magnetic members 126 are arranged on the rotor core 124. The rotor core 124 includes a plurality of core blocks. The core blocks and the magnetic members 126 are alternately arranged in a ring structure, thereby making the magnetic field strength on both sides of the rotor 120 more uniform and making the operation of the rotor 120 more stable.

[0139] Among them, the outer ring 122 is a non-magnetic outer ring 122, which can reduce the consumption of the magnetic field between the first stator 110 and the second stator 130, increase the magnetic field strength between the first stator 110 and the second stator 130, and improve the torque and power density of the motor.

[0140] Specifically, the magnetic member 126 is a magnetic tile.

[0141] Example 15:

[0142] like Figure 1 、 Figure 2 、 Figure 5 、 Figure 6 and Figure 7As shown, the axial flux motor 100 provided by the present invention includes a rotor 120, a first stator 110, and a second stator 130. The rotor 120 is located between the first stator 110 and the second stator 130 and is arranged parallel to each other.

[0143] The first stator 110 consists of a first winding 140 and a first stator core 110. The first stator core 110 comprises first stator teeth 112, a first tooth body 116, and a first base plate 118. The first stator teeth 112 and the first tooth body 116 are also compacted from soft magnetic material powder and bonded together with an adhesive. The first winding 140 is wound around the first tooth body 116. The first stator teeth 112 of the first stator 110 have a number Z1, with Z1 first stator slots 114 existing between them. The first winding 140 has a pole number of 2Ps. The first stator teeth 112 of the first stator 110 have first grooves 1122 located near the air gap. Each first stator tooth 112 has one first groove 1122.

[0144] The second stator 130 is formed by pressing soft magnetic material powder. No second winding 150 is wound around the second stator 130 . The number of the second stator teeth 132 of the second stator 130 is Z2 .

[0145] like Figure 10 and Figure 11 As shown, the rotor 120 is composed of magnetic members 126 and a rotor core 124. The number of magnetic members 126 is 2Pr, and the magnetic members 126 are evenly arranged around a circle. The magnetic members 126 are separated by the rotor core 124, and the rotor core 124 is connected by the non-magnetic outer ring 122.

[0146] The number of teeth Z1 of the first stator teeth 112, the number of poles 2Pr of the rotor 120, and the number of teeth Z2 of the second stator teeth 132 satisfy: Z1 = Z2, |Pr±2Z1| = Ps. The first groove 1122 of the first stator 110 and the first stator tooth 112 are axially opposite to the second stator tooth 132 of the second stator 130.

[0147] like Figure 13 As shown, the axial flux motor 100 has the characteristic of high torque, and compared with a radial motor of the same size with a corresponding number of poles, the motor torque is significantly improved.

[0148] Example 16:

[0149] like Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 8 and Figure 9As shown, the axial flux motor 100 provided by the present invention includes a rotor 120, a first stator 110, and a second stator 130. The rotor 120 is located between the first stator 110 and the second stator 130 and is arranged parallel to each other.

[0150] The first stator 110 consists of a first winding 140 and a first stator core 110. The first stator core 110 comprises first stator teeth 112, a first tooth body 116, and a first base plate 118. The first stator teeth 112 and the first tooth body 116 are also compacted from soft magnetic material powder and bonded together with an adhesive. The first winding 140 is wound around the first tooth body 116. The first stator teeth 112 of the first stator 110 have a number Z1, with Z1 first stator slots 114 existing between them. The first winding 140 has a pole number of 2Ps. The first stator teeth 112 of the first stator 110 have first grooves 1122 located near the air gap. Each first stator tooth 112 has one first groove 1122.

[0151] The second stator 130 consists of a second winding 150 and a second stator core. The second stator core 130 consists of second stator teeth 132, a second tooth body 136, and a second base plate 138. The second stator teeth 132 and the second tooth body 136 are also compacted and formed from soft magnetic material powder and bonded together with an adhesive. The second winding 150 is wound around the second tooth body 136. The second stator teeth 132 of the second stator 130 have a total number of Z2, with Z2 second stator slots 134 located between each second stator tooth 132. The second winding 150 has a total number of poles of 2Ps. Each second stator tooth 132 of the second stator 130 has a second groove 1322 located near the air gap. Each second stator tooth 132 has a second groove 1322.

[0152] like Figure 10 and Figure 11 As shown, the rotor 120 is composed of magnetic members 126 and a rotor core 124. The number of magnetic members 126 is 2Pr, and the magnetic members 126 are evenly arranged around a circle. The magnetic members 126 are separated by the rotor core 124, and the rotor core 124 is connected by the non-magnetic outer ring 122.

[0153] The number of teeth Z1 of the first stator teeth 112, the number of poles 2Pr of the rotor 120, and the number of teeth Z2 of the second stator teeth 132 satisfy: Z1 = Z2, |Pr±2Z1| = Ps. The first groove 1122 of the first stator 110 and the first stator tooth 112 are axially opposite to the second stator tooth 132 of the second stator 130.

[0154] like Figure 14 As shown, the axial flux motor 100 has the characteristic of high torque, and compared with a radial motor of the same size with a corresponding number of poles, the motor torque is significantly improved.

[0155] Example 17:

[0156] The present invention provides an electrical device, comprising: an axial flux motor 100 provided in any of the above embodiments.

[0157] The electrical device provided by the present invention includes the axial flux motor 100 provided in any of the above embodiments, and therefore has all the beneficial effects of the axial flux motor 100 provided in any of the above embodiments, which will not be described one by one here.

[0158] Specifically, electrical appliances include washing machines, blenders or compressors, etc.

[0159] In the present invention, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "plurality" refers to two or more, unless expressly limited otherwise. Terms such as "installed," "connected," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; "connected" can mean a direct connection or an indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of these terms in the present invention based on specific circumstances.

[0160] In the description of the present invention, it should be understood that the directions or positional relationships indicated by terms such as "up", "down", "left", "right", "front" and "back" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0161] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0162] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. An axial flux motor, characterized in that: include: A first stator, wherein the first stator comprises a plurality of first stator teeth, a first stator slot is provided between adjacent first stator teeth, a first groove is provided on one side of the first stator tooth, and the first groove divides the first stator tooth into a plurality of first auxiliary teeth; a rotor located on one side of the first stator, wherein the first stator teeth are provided with the first groove on a side facing the rotor; a second stator, disposed on a side of the rotor facing away from the first stator, the second stator comprising a plurality of second stator teeth, second stator slots being provided between adjacent second stator teeth, the first slots being arranged corresponding to the second stator teeth; A second groove is formed on the second stator tooth, the second groove divides the second stator tooth into a plurality of second auxiliary teeth, and the first groove and the second auxiliary teeth are arranged correspondingly; The opening direction of the second groove is toward the rotor; The first auxiliary teeth of the first stator and the second auxiliary teeth of the second stator are staggered.

2. The axial flux motor according to claim 1, characterized in that The first stator slots and the second stator teeth are arranged correspondingly.

3. The axial flux motor according to claim 1, characterized in that The number of the first auxiliary teeth is equal to the number of the second stator teeth.

4. The axial flux motor according to any one of claims 1 to 3, characterized in that The first stator further includes: The first stator tooth is provided on the first tooth body, and the first stator tooth and the first stator tooth body are split structures.

5. The axial flux motor according to claim 4, characterized in that The first stator further includes: A first substrate, wherein the first tooth body is provided on the first substrate, and the first tooth body and the first substrate are an integrated structure.

6. The axial flux motor according to claim 4, characterized in that The first tooth body and the first stator tooth are bonded together.

7. The axial flux motor according to any one of claims 1 to 3, characterized in that The second stator is a soft magnetic second stator.

8. The axial flux motor according to claim 1 or 2, characterized in that: The number of the first auxiliary teeth is equal to the number of the second auxiliary teeth.

9. The axial flux motor according to claim 1 or 2, characterized in that: The second stator further includes: The second tooth body is provided with the second stator tooth.

10. The axial flux motor according to claim 9, characterized in that The second stator further includes: The second tooth body is provided on the second substrate, and the second tooth body and the second substrate are an integrated structure.

11. The axial flux motor according to claim 9, characterized in that The second tooth body and the second stator tooth are bonded to each other.

12. The axial flux motor according to any one of claims 1 to 3, characterized in that The number of poles of the rotor is 2Pr, the number of teeth of the first stator is Z1, and the number of poles of the winding of the first stator is 2Ps. Among them, |Pr±2×Z1|=Ps.

13. The axial flux motor according to any one of claims 1 to 3, characterized in that The rotor comprises: rotor core; A plurality of magnetic components are provided on the rotor core; The outer ring is sleeved on the outside of the rotor core and the magnetic component, and the outer ring is a non-magnetic outer ring.

14. An electrical device, characterized in that: include: An axial flux motor according to any one of claims 1 to 13.

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