Axial flux motor stator, axial flux induction motor and its manufacturing method

Abstract

This invention provides an axial flux motor stator, an axial flux induction motor, and a method for manufacturing the same. The axial flux motor stator includes a stator disk made of a thermally conductive material. The stator disk has a stator bearing chamber and multiple receiving holes evenly spaced around the bearing chamber. Each receiving hole contains a solid stator winding, which is formed by multiple layers of enameled wire wound from the inside out. The magnetic flux direction of each solid stator winding is parallel to the axial direction of the stator disk. The stator windings on the stator disk are cylindrical solid coils formed by multiple layers wound from the inside out. This minimizes or eliminates the amount of air between the enameled wire strands, creating a highly efficient heat-conducting structure. The stator disk increases the heat dissipation area of ​​each solid stator winding, further improving the heat dissipation efficiency of each winding, effectively reducing winding temperature rise, preventing winding insulation aging, and improving the motor's lifespan, torque, and efficiency.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of motor design and manufacturing, and particularly relates to an axial flux motor stator, an axial flux induction motor and a preparation method thereof. BACKGROUND

[0002] The working principle of an induction motor is based on the law of electromagnetic induction, and is composed of a stator and a rotor. A rotating magnetic field is generated in the stator coil through an alternating current, and an induced current is generated in the rotor, which ultimately drives the rotor to rotate. Generally speaking, the stator is the stationary part of the motor (electric motor), which includes a stator core, windings and a base, etc. When an alternating current source is connected to the windings, a rotating magnetic field is formed in the windings. The rotor is the rotating part of the motor, which is usually composed of a rotor core and conductor strips. These conductor strips are usually made of good conductive materials such as aluminum or copper and are fixed on the rotor core. When the rotating magnetic field passes through the conductor strips of the rotor, an induced electromotive force is generated in the conductor strips, which in turn generates an electric current. Since the electric current in the conductor strips is subject to electromagnetic force, the rotor is subject to a certain torque, thereby starting to rotate. The induction motor has the advantages of simple structure, high reliability and stable operation, and is widely used in various industrial and civil fields. However, the structural drawbacks of the induction motor in the prior art are also relatively obvious, for example:

[0003] (1) The stator and rotor cores of the induction motor are provided with teeth and slots, and the windings or conductor strips are arranged in the slots. The tooth and slot structure causes torque pulsation, resulting in large vibration and noise. In addition, due to the presence of the stator core and the rotor core, the weight of the motor increases, leading to problems such as high material consumption and high manufacturing cost.

[0004] (2) When the induction motor is connected to an alternating current source, the stator windings bear high voltage and large current, and are directly exposed to an alternating magnetic field, which is prone to generate high temperature rise. The temperature rise increases the direct current resistance of the stator, increases the loss, further increases the temperature rise, and long-term operation in this state accelerates the insulation aging of the stator windings and damages the motor. Therefore, during the long-term operation of the motor, the heat dissipation efficiency not only relates to the service life of the motor, but also often is the most important limiting factor for the performance of the motor torque and efficiency.

[0005] A common method for improving the winding temperature of an axial magnetic field (i.e. axial flux) coreless motor in related technologies is to use heat-conducting insulation potting glue to pot the stator winding. This method can improve the heat dissipation of the winding, but due to the low thermal conductivity of the potting glue, the stator winding temperature drop is limited after potting. Some existing technologies propose to set a circulating water channel along the axial shell of the motor to reduce the winding temperature rise, but due to the low heat exchange efficiency, it is difficult to eliminate the heat of the stator winding, and the heat dissipation capacity is relatively weak. Moreover, this method increases the effective axial size of the stator winding, resulting in increased manufacturing cost and size of the motor. SUMMARY

[0006] Therefore, the present application provides an axial flux motor stator, an axial flux induction motor and a preparation method thereof, which can overcome the technical problem of insufficient heat dissipation of the winding of the stator in the axial flux induction motor in the related art, accelerate the insulation aging of the stator winding, and reduce the service life, torque and efficiency of the motor.

[0007] In order to solve the above problems, the present application provides an axial flux motor stator, comprising a stator disc, the material of the stator disc is a heat-conducting material, the stator disc has a stator bearing chamber and a plurality of accommodating holes uniformly and spacedly arranged around the stator bearing chamber, each of the accommodating holes is provided with a solid stator winding, the solid stator winding is formed by a plurality of layers of enameled wires which are circumferentially arranged from inside to outside, and the magnetic flux direction of each of the solid stator windings is parallel to the axial direction of the stator disc.

[0008] In some embodiments, the heat-conducting material is injection molding material or epoxy resin; or the stator disc has a base part.

[0009] In some embodiments, the stator disc and the solid stator winding are integrally formed by potting with the heat-conducting material.

[0010] The present application also provides an axial flux induction motor, comprising a motor stator, a rotating shaft, a motor rotor on one side of the end face of the motor stator, the motor rotor is sleeved on the rotating shaft, the rotating shaft passes through and rotates in the stator bearing chamber of the motor stator, a stator-rotor air gap is formed between the motor stator and the motor rotor, and the motor stator is the above-mentioned axial flux motor stator.

[0011] In some embodiments, the motor rotor is composed of a conductive wheel which is fixedly sleeved on the rotating shaft, the conductive wheel is composed of an inner ring which is sleeved on the rotating shaft, an outer ring which is concentrically and spacedly arranged with the inner ring, and a plurality of radial and spaced conductive strips which are connected between the inner ring and the outer ring.

[0012] In some embodiments, each of the conductive strips is a fan blade structure, so as to drive the airflow to flow towards the motor stator when the motor rotor rotates.

[0013] In some embodiments, the inner ring has a convex ring formed on the side end face of the inner ring which extends along the axial direction of the inner ring, and the end face of the convex ring is in contact with the axial end face of the stator disc.

[0014] In some embodiments, the motor rotor has two groups, the two groups of motor rotors are respectively located at two ends of the motor stator and share the rotating shaft; and / or the conductive wheel is formed by injection molding of conductive material.

[0015] The application further provides a preparation method of the axial flux induction motor.

[0016] The motor stator preparation step is to wind each solid stator winding, place each solid stator winding in the corresponding position of the stator disc forming die cavity, and then pour the heat-conducting material into the stator disc forming die cavity to form the solid motor stator.

[0017] The motor rotor preparation step is to pour the liquid conductive material into the conductive wheel forming die cavity to integrally injection mold the motor rotor.

[0018] The stator-rotor assembly step is to assemble the bearing in the stator bearing chamber of the stator disc, place the two motor rotors at the two ends of the motor stator respectively and form coaxial stacking, and press the rotating shaft along the axial direction of the motor stator and the motor rotor.

[0019] In some embodiments, the solid stator winding is formed by winding in the following manner:

[0020] The winding tool is prepared, and the winding tool includes a transmission needle and a front baffle and a rear baffle connected to the two ends of the transmission needle respectively.

[0021] The wire head of the enameled wire is fixed on the wire head fixing structure of the winding tool, the winding tool is driven to rotate around the central axis of the transmission needle for a predetermined number of turns, and then the winding tool is disassembled to form the solid stator winding.

[0022] The axial flux motor stator, the axial flux induction motor and the preparation method thereof provided by the application have the following beneficial effects:

[0023] The stator disc made of the heat-conducting material serves as the mounting carrier of each stator winding, so that the motor stator is objectively free of the stator core, and the torque ripple caused by the tooth slot structure of the stator core arranged in the motor stator can be eliminated, thereby reducing the vibration and noise during the operation of the motor.

[0024] The stator disc and the solid stator winding are integrally formed by potting with the heat-conducting material, so that the heat-conducting material can completely wrap the solid stator winding, and the liquid heat-conducting material can fill the gaps possibly existing in the winding process of the solid stator winding, further ensuring the heat dissipation effect of the stator disc on each solid stator winding;

[0025] Since the motor rotor objectively has no rotor core, torque ripple caused by the tooth slot structure of the rotor core arranged in the motor rotor can be eliminated, thereby reducing vibration noise during motor operation, and further reducing the overall weight and manufacturing cost of the motor;

[0026] The conductive bars on the conductive wheel are designed as fan blade structures, which can flow the air around the conductive wheel to the motor stator side while transmitting power outward when the motor rotor rotates, thereby forming a cooling effect on the motor stator, which can further improve the heat dissipation effect of the motor stator.

[0027] The width of the stator-rotor air gap can be determined by the thickness of the convex ring, ensuring the stability of the stator-rotor air gap width.

[0028] When the two groups of motor rotors rotate synchronously, the airflow driven by the two groups of motor rotors flows towards the motor stator, thereby further improving the cooling effect of the motor stator, and the torque of the motor can be improved due to the use of two groups of motor rotors. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. The drawings in the following description are only exemplary, and other embodiments can be derived from the provided drawings without creative labor for those skilled in the art.

[0030] Figure 1 is a perspective structural schematic diagram (partially sectioned) of an axial flux motor stator in the embodiment of the present application;

[0031] Figure 2 is a perspective structural schematic diagram of an axial flux induction motor in the embodiment of the present application;

[0032] Figure 3 is a perspective structural schematic diagram of an axial flux induction motor in the embodiment of the present application; Figure 2

[0033] Figure 4 is a perspective structural schematic diagram of an axial flux induction motor in the embodiment of the present application; Figure 2 ​​

[0034] Figure 5 is Figure 2 a perspective structural schematic view of a motor rotor in the motor;

[0035] Figure 6 is Figure 5 a partial sectional view of a motor rotor in the motor;

[0036] Figure 7 is Figure 1 a schematic view of a state of a solid stator winding on a winding tool in the motor;

[0037] Figure 8 is Figure 7 a perspective structural schematic view of a winding tool in the motor;

[0038] Figure 9 is a schematic view of a distribution principle of a solid stator winding on a motor stator in the motor.

[0039] The reference signs are:

[0040] 100, motor stator; 1, stator disc; 11, stator bearing chamber; 12, base portion; 121, mounting hole; 13, coil terminal; 2, solid stator winding; 200, rotating shaft; 300, motor rotor; 301, conductive wheel; 3011, inner ring; 3012, outer ring; 3013, conducting strip; 3014, convex ring; 400, winding tool; 401, transmission needle; 402, front baffle; 403, rear baffle; 404, thread head fixing structure; 405, thread tail fixing structure; 406, thread head via hole; 407, winding rotation driving end; 500, bearing; 600, check ring. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0042] In the description of the present application, it needs to be understood that the orientation words such as "front, back, up, down, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicated orientation or position relationship is generally based on the orientation or position relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, without making the opposite statement, these orientation words do not indicate and imply that the device or element referred to must have a particular orientation or be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer relative to the contour of each component itself.

[0043] For the convenience of description, spatial relative terms such as "over", "above", "upper surface", "upper" and the like can be used herein to describe the spatial position relationship of one device or feature with other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawings. For example, if the device in the drawing is inverted, the device described as "above" or "over" other devices or structures will be positioned "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90° or in other orientations), and the spatial relative description used herein is interpreted accordingly.

[0044] In addition, it needs to be pointed out that the use of "first", "second" and the like to define parts is only for the convenience of distinguishing the corresponding parts, and the above words have no special meaning unless otherwise stated, therefore, it cannot be understood as a limitation on the scope of protection of the present application.

[0045] Referring to Figures 1 to 9 As shown, according to the embodiment of the present application, an axial flux motor stator is provided, comprising a stator disc 1, the material of the stator disc 1 is a heat-conducting material, the stator disc 1 has a stator bearing chamber 11 and a plurality of accommodating holes (not marked in the drawing) uniformly and spacedly arranged around the stator bearing chamber 11, a solid stator winding 2 is arranged in each of the accommodating holes, the solid stator winding 2 is formed by a plurality of layers of enameled wires surrounding from inside to outside, and the magnetic flux direction of each solid stator winding 2 is parallel to the axial direction of the stator disc 1.

[0046] The stator disc 1 made of the heat-conducting material serves as a mounting carrier for the stator windings, so that the motor stator is objectively free of a stator core, thereby eliminating torque ripple caused by the tooth slot structure of the stator core arranged in the motor stator, and reducing vibration and noise during motor operation. More importantly, the stator windings on the stator disc 1 are cylindrical solid coils formed by multiple layers from the inside to the outside. Since the multiple layers are tightly contacted and wound, the air gap between the strands of enameled wire is extremely small or even nonexistent, thereby forming a whole high-efficiency heat-conducting body. Meanwhile, the stator disc 1 made of the heat-conducting material can further expand the heat dissipation area of the solid stator windings 2 while serving as a mounting carrier for the windings, thereby further improving the heat dissipation efficiency of the windings, effectively reducing the temperature rise of the windings during motor operation, preventing insulation aging of the windings caused by temperature rise, improving the service life of the motor, and improving the torque and efficiency of the motor.

[0047] In some embodiments, the heat-conducting material is an injection molding material or an epoxy resin. The injection molding material can be PBT (polybutylene terephthalate) plastic, which has high heat-conducting performance, relatively small density, can effectively reduce the overall mass of the motor stator, and is relatively inexpensive, thereby significantly reducing the overall manufacturing cost of the motor.

[0048] Specifically referring to Figure 1 As shown, the stator disc 1 has a base portion 12, which is generally a pedestal structure having corresponding mounting holes 121 formed thereon to enable reliable detachable assembly with an external carrier through the mounting holes 121. The base portion 12 is also provided with corresponding coil connection terminals 13 to form electrical connection with external power supply lines through the coil connection terminals 13.

[0049] In some embodiments, the stator disc 1 and the solid stator windings 2 are integrally formed by pouring and molding the heat-conducting material, so that the heat-conducting material completely wraps the solid stator windings 2. Since the pouring and molding method is adopted, the liquid heat-conducting material can also fill the gaps (such as the position of the transmission needle 401 mentioned later) that may exist in the winding process of the solid stator windings 2, further ensuring the heat dissipation effect of the stator disc 1 on the solid stator windings 2.

[0050] Specifically referring to Figure 9As shown, in one specific embodiment of the present application, the solid stator winding 2 adopts four in total, two of which are main phase windings, and the other two are auxiliary phase windings, the number of main phase windings is the same as the number of winding distribution of auxiliary phase windings, and the two are alternately and symmetrically distributed, and the adjacent windings of the same phase are opposite in winding direction. In addition, the solid stator windings 2 are independent of each other, and can be wound at the same time, thereby improving the winding efficiency.

[0051] According to the embodiments of the present application, in particular with reference to Figures 2 to 4 As shown, an axial flux induction motor is also provided, which comprises a motor stator 100, a rotating shaft 200, a motor rotor 300 located on one side of the end face of the motor stator 100, the motor rotor 300 is sleeved on the rotating shaft 200, the rotating shaft 200 passes through and rotates in the stator bearing chamber 11 of the motor stator 100, and a stator-rotor air gap (such as the air gap indicated in Figure 3 The motor stator 100 is the above-mentioned axial flux motor stator.

[0052] In particular, with reference to Figure 5 As shown, in some embodiments, the motor rotor 300 is composed of a conductive wheel 301 fixedly sleeved on the rotating shaft 200, the conductive wheel 301 is composed of an inner ring 3011 sleeved on the rotating shaft 200, an outer ring 3012 concentrically and spaced apart from the inner ring 3011, and a plurality of radial spacer bars 3013 connected between the inner ring 3011 and the outer ring 3012, that is, the motor rotor in the present application also objectively does not use a rotor core.

[0053] In this technical solution, since the motor rotor 300 objectively does not have a rotor core, torque pulsation caused by the tooth slot structure of the rotor core arranged in the motor rotor can be eliminated, thereby reducing the vibration and noise during the operation of the motor, which can further reduce the overall weight and manufacturing cost of the motor.

[0054] As a more preferred implementation, each of the bars 3013 is a fan structure to drive the airflow to flow towards the motor stator 100 when the motor rotor 300 rotates.

[0055] In this technical solution, each bar 3013 on the conductive wheel 301 is designed as a fan structure, when the motor rotor 300 rotates, it can not only transmit power outward, but also flow the airflow around it towards the motor stator 100 side, thereby forming a cooling effect on the motor stator 100, which can further improve the heat dissipation effect of the motor stator 100.

[0056] In particular, with reference to Figure 6As shown, the connection position between the aforementioned guide bar 3013 and the inner ring 3011 is at the blade root, and the connection position between the aforementioned guide bar 3013 and the outer ring 3012 is at the blade tip. In order to ensure that the airflow can be driven to the side of the motor stator 100 when the conductive wheel 301 rotates, the fan blade structure formed by the aforementioned guide bar 3013 should have a certain tilt angle. Figure 6 The specific tilt angle can be reasonably selected according to the heat dissipation requirements. Specifically, when the conductive wheel 301 rotates, it can generate a thrust effect on the air in front, that is, push the air forward to form an airflow. The tilt of the guide bar 3013 ensures that most of the airflow is effectively guided forward, thereby generating a significant wind force on the side of the guide bar 3013 facing the motor stator 100. At the same time, the air behind the guide bar 3013 (that is, the side away from the motor stator 100) is drawn in due to the local vacuum effect (low pressure area) formed by the rotation of the guide bar 3013, thereby maintaining the continuity of airflow, thereby effectively dissipating heat in real time, reducing motor losses, and improving motor efficiency.

[0057] In some embodiments, a convex ring 3014 extending axially along the inner ring 3011 is formed on the side end face of the inner ring 3011 facing the motor stator 100, and the end face of the convex ring 3014 abuts against the axial end face of the stator disk 1.

[0058] In this technical solution, the width of the aforementioned stator-rotor air gap can be determined by the thickness of the convex ring 3014, thus ensuring the stability of the stator-rotor air gap width.

[0059] The aforementioned convex ring 3014 can be symmetrically disposed on the end faces of opposite sides of the inner ring 3011. In order to reduce the contact wear between the convex ring 3014 and the motor stator 100, in practical applications, a corresponding wear-resistant plate can be provided between the mating surfaces of the motor stator 100 and the convex ring 3014, or a wear-resistant layer can be provided on at least one of the mating surfaces of the two.

[0060] In some embodiments, the motor rotor 300 has two sets, which are respectively located at both ends of the motor stator 100 and share the rotating shaft 200. Specifically, the two sets of motor rotors 300 are arranged radially to the left and right of the motor stator 100. In this way, when the two sets of motor rotors 300 rotate synchronously, the airflow driven by the two sets of motor rotors 300 flows towards the motor stator 100, thereby further improving the cooling and heat dissipation effect on the motor stator 100. At the same time, the use of two sets of motor rotors 300 can increase the torque of the motor.

[0061] In some embodiments, the conductive wheel 301 is injection molded from a conductive material, such as copper or aluminum.

[0062] In the technical solution, the conductive wheel 301 is formed by injection molding of conductive material, which can improve material utilization and simplify the manufacturing process of the conductive wheel 301.

[0063] According to the embodiment of the application, a preparation method of the axial flux induction motor is also provided, which comprises the following steps:

[0064] The motor stator preparation step comprises: winding each solid stator winding 2, placing each solid stator winding 2 at a corresponding position of the stator disc forming die cavity, and pouring and sealing a heat-conducting material into the stator disc forming die cavity to form the solid motor stator 100;

[0065] The motor rotor preparation step comprises: pouring liquid conductive material into the conductive wheel forming die cavity, and integrally injection molding the motor rotor 300.

[0066] The stator-rotor assembly step comprises: placing two motor rotors 300 at two ends of the motor stator 100 after the bearing 500 is placed in the stator bearing chamber 11 of the stator disc 1 and coaxially stacked, and pressing the shaft 200 into the shaft along the axial direction of the motor stator 100 and the motor rotor 300. In this embodiment, the inner ring of the bearing 500 and the inner ring 3011 of the conductive wheel 301 are in interference fit with the shaft 200.

[0067] In the technical solution, the motor stator preparation step and the motor rotor preparation step can be performed in parallel to improve the motor preparation efficiency.

[0068] In some embodiments, the solid stator winding 2 is wound in the following manner:

[0069] A winding tool 400 is prepared, as shown in Figure 7 and Figure 8 The winding tool 400 comprises a transmission needle 401, a front baffle 402 and a rear baffle 403 connected to two ends of the transmission needle 401, respectively. In order to ensure the solid degree of the solid stator winding 2 after winding, the diameter of the transmission needle 401 should be as small as possible under the premise of meeting the mechanical stiffness. The annular gap between the front baffle 402 and the rear baffle 403 forms a layered and surrounding space for the enameled wire. In order to improve the winding efficiency, two same winding tools 400 can be used to synchronously wind (in opposite directions) two coils of the same phase.

[0070] The wire head of the enameled wire is fixed on the wire head fixing structure 404 of the winding tool 400, which can be a winding column formed on the outer end surface of the front baffle 402 and located close to the transmission needle 401. At this time, the wire head through hole 406 is formed through the front baffle 402, and the winding rotation driving end 407 is coaxially arranged on the outer side of the rear baffle 403 and the transmission needle 401. The rotation shaft of the winding rotation mechanism is fixedly connected with the winding rotation driving end 407 to drive the winding tool 400 to rotate around the central axis of the transmission needle 401 for a predetermined number of turns. After the winding tool 400 is disassembled, the solid stator winding 2 is formed.

[0071] In some other embodiments, the rear baffle 403 can also be provided with a wire tail fixing structure 405 (for example, also a winding column) to fix the wire tail of the solid stator winding 2 formed by winding, thereby ensuring the stability of the stator winding after winding.

[0072] Those skilled in the art can understand that the advantageous technical features of the above-mentioned modes can be freely combined and superimposed without conflict.

[0073] The above description is only the preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application. The above description is only the preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An axial flux induction machine, characterized in that, The motor stator (100), the rotating shaft (200), the motor rotor (300) on the end face of the motor stator (100), the motor rotor (300) is sleeved on the rotating shaft (200), the rotating shaft (200) is supported in the stator bearing chamber (11) of the motor stator (100), the motor stator (100) and the motor rotor (300) form the stator-rotor air gap, the motor stator (100) is an axial flux motor stator, comprising a stator disc (1), the material of the stator disc (1) is a heat conducting material, the stator disc (1) has a stator bearing chamber (11) and a plurality of accommodating holes uniformly arranged around the stator bearing chamber (11), each accommodating hole is provided with a solid stator winding (2), the solid stator winding (2) is formed by a plurality of layers of enameled wire from inside to outside, and the magnetic flux direction of each solid stator winding (2) is parallel to the axial direction of the stator disc (1); the motor rotor (300) is composed of a conductive wheel (301) fixedly sleeved on the rotating shaft (200), the conductive wheel (301) is composed of an inner ring (3011) sleeved on the rotating shaft (200), an outer ring (3012) concentrically and spaced apart from the inner ring (3011), and a plurality of radial spaced apart conductive strips (3013) connected between the inner ring (3011) and the outer ring (3012); each conductive strip (3013) has an inclination angle to form a fan structure to drive airflow to flow towards the motor stator (100) when the motor rotor (300) rotates.

2. The axial flux induction machine of claim 1, wherein, The inner ring (3011) is formed with a convex ring (3014) extending along the axial direction of the inner ring (3011) on the side end face of the motor stator (100), and the end face of the convex ring (3014) abuts against the axial end face of the stator disc (1).

3. The axial flux induction machine of claim 1, wherein, The motor rotor (300) has two groups, and the two groups of motor rotors (300) are respectively located at the two ends of the motor stator (100) and share the rotating shaft (200); and / or the conductive wheel (301) is formed by injection molding of conductive material.

4. The axial flux induction machine of claim 1, wherein, The heat conducting material is an injection molding material; or the stator disc (1) has a base portion (12).

5. The axial flux induction machine of claim 4, wherein, The stator disc (1) and the solid stator winding (2) are integrally formed by pouring and sealing of the heat conducting material.

6. A method for manufacturing an axial flux induction motor according to any one of claims 1 to 5, comprising the following steps: A motor stator preparation step, each solid stator winding (2) is wound and formed, and then placed in the corresponding position of the stator disc forming mold cavity, and then the heat conducting material is injected into the stator disc forming mold cavity to form a solid motor stator (100); A motor rotor preparation step, liquid conductive material is injected into the conductive wheel forming mold cavity to integrally injection mold the motor rotor (300). The stator assembly step is characterized by: after the bearing (500) is installed in the stator bearing chamber (11) of the stator disc (1), the two motor rotors (300) are respectively arranged at two ends of the motor stator (100) and coaxially stacked, and the rotating shaft (200) is press-fitted along the axial direction of the motor stator (100) and the motor rotor (300).

7. The method of manufacturing an axial flux induction machine according to claim 6, wherein, The solid stator winding (2) is formed by winding in the following manner: A winding tool (400) is prepared, which comprises a transmission needle (401) and a front baffle (402) and a rear baffle (403) connected to two ends of the transmission needle (401) respectively; The wire end of the enameled wire is fixed on the wire end fixing structure (404) of the winding tool (400), the winding tool (400) is driven to rotate around the central axis of the transmission needle (401) for a predetermined number of turns, and then the winding tool (400) is disassembled to form the solid stator winding (2).

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