A dual-rotor single-stator axial flux motor structure

Abstract

The application relates to the technical field of new energy automobile driving motors, in particular to a double-rotor single-stator axial flux motor structure which comprises a stator assembly, bearings and two rotor assemblies arranged on the same axis; the stator assembly comprises a stator core with stator teeth on both sides, a winding assembly on the stator teeth and a shell on the outer periphery of the stator core and the winding assembly; the two rotor assemblies are connected to a rotor shaft, the rotor shaft is sleeved in the stator assembly, and the rotor assemblies are oppositely arranged with the winding assembly; the bearings are sleeved on the rotor shaft, and the two rotor assemblies are provided with end covers fixedly connected with the shell on the sides facing the outside. The coaxial double-rotor single-stator layout improves the axial space utilization rate; the stator two-side rotor structure improves the magnetic flux utilization efficiency and output capacity; the bearing supports the rotor shaft, improving the rotation stability; and the end cover is connected with the shell, improving the structural integrity and operation reliability.

Description

Technical Field

[0001] This invention relates to the field of new energy vehicle drive motor technology, and in particular to a dual-rotor single-stator axial flux motor structure. Background Technology

[0002] Axial flux motors are motor structures in which magnetic flux passes through the air gap along the axial direction of the motor. Compared with traditional radial flux motors, they have advantages such as flat structure, high power density and small axial size, and therefore have good application prospects in the field of new energy vehicle drive systems.

[0003] In existing technologies, most drive motors for new energy vehicles adopt a flat-wire radial flux motor structure. While this type of motor improves slot fill factor and output performance through flat-wire windings, the large stator and rotor yokes in its magnetic circuit require a significant amount of ferromagnetic material to support the flux path, resulting in a large overall motor weight and limiting power density improvements. Although axial flux motor structures such as dual-stator single-rotor or single-stator single-rotor have been proposed in the industry, existing structures still generally suffer from large stator yoke dimensions and low structural utilization. Furthermore, they are prone to generating significant heat loads under high-power operating conditions, leading to high motor temperature rise and affecting their continuous output capability.

[0004] Therefore, a new motor structure is urgently needed to improve structural strength and heat dissipation while reducing stator weight, thereby achieving further improvements in power density and operating performance. Summary of the Invention

[0005] In view of at least one of the above technical problems, the present invention provides a dual-rotor single-stator axial flux motor structure, which improves the overall operating performance by adopting structural improvements.

[0006] According to a first aspect of the present invention, a dual-rotor single-stator axial flux motor structure is provided, comprising:

[0007] The stator assembly, bearings, and two rotor assemblies respectively disposed on both sides of the stator assembly are arranged coaxially.

[0008] The stator assembly includes a stator core, stator teeth disposed on both sides of the stator core, a winding assembly mounted on the stator teeth, and a housing disposed on the outer periphery of the stator core and the winding assembly.

[0009] Both rotor assemblies are connected to a rotor shaft, which is sleeved inside the stator assembly. The rotor assembly and the winding assembly are arranged opposite to each other.

[0010] The bearing is sleeved on the rotor shaft, and the two rotor assemblies also have an end cap fixedly connected to the housing on the side facing outward.

[0011] The stator core includes a yoke, and the yoke has multiple through holes arranged radially along the stator core. A connector for connecting the housing passes through the through holes.

[0012] In some embodiments of the present invention, the housing includes an inner ring shell and an outer ring shell disposed along the length direction of the stator core, and a cover plate sealingly connected to both ends of the inner ring shell and the outer ring shell.

[0013] In some embodiments of the present invention, the connector includes a long positioning pin, one end of which extends into the inner ring shell for fixed connection, and the other end of which extends into the outer ring shell for fixed connection. There are at least four long positioning pins that are evenly distributed.

[0014] In some embodiments of the present invention, the through-hole structure has multiple holes and is disposed between two adjacent stator teeth. The connector further includes a short positioning pin, one end of which abuts against the outer ring shell and the other end of which extends into the inner ring shell for fixed connection.

[0015] In some embodiments of the present invention, an inner pressure ring is provided between the inner ring shell and the stator core, and an outer pressure ring is provided between the outer ring shell and the stator core. Both the inner pressure ring and the outer pressure ring abut against the magnetic yoke on one side.

[0016] In some embodiments of the present invention, the cover plate has a receiving groove facing the stator core, a limiting strip is provided in the receiving groove, the stator core extends into the receiving groove, and the stator teeth have limiting grooves that cooperate with the limiting strip.

[0017] In some embodiments of the present invention, the winding assembly includes two insulating frames and a stator winding disposed between the two insulating frames. The insulating frame includes a fixed edge that fits against the side of the stator winding, a snap-fitting edge that extends toward the inner periphery of the stator winding, and a limiting stop edge that extends toward the outer periphery of the stator winding.

[0018] In some embodiments of the present invention, the fastening rim includes fastening teeth, and when the two insulating skeletons are fastened together, the fastening teeth cooperate and abut against each other.

[0019] In some embodiments of the present invention, when the two insulating frames are fastened together, at least two hollow holes are formed between the fastening edges, and coolant flows through the hollow holes.

[0020] In some embodiments of the present invention, an inner rotor ring is fixedly connected to the outer periphery of the rotor shaft. The rotor assembly includes a rotor support fixedly connected to the inner rotor ring and a magnet disposed on the rotor support and disposed opposite to the winding assembly. The bearing is disposed between the inner rotor ring and the rotor shaft.

[0021] The beneficial effects of this invention are as follows: By adopting a coaxially arranged stator assembly, rotor assembly, and rotor shaft structure, the overall structure of the motor is more compact, which is beneficial to improving the axial space utilization rate; by setting two rotor assemblies on both sides of the stator assembly, both sides of the stator participate in the electromagnetic process, improving the magnetic flux utilization efficiency, thereby improving the output capacity and power density of the motor; by using bearings to support and guide the rotor shaft, the stability and reliability of the rotor shaft during rotation are improved; by using the fixed connection structure between the end cover and the housing, the two ends of the motor are sealed and fixed, which is beneficial to improving the integrity and assembly reliability of the overall structure of the motor, thereby meeting the stable operation requirements of the motor under high-speed operating conditions. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a structural cross-sectional view of the dual-rotor single-stator axial flux motor structure in an embodiment of the present invention;

[0024] Figure 2 This is an exploded view of the structure of the dual-rotor single-stator axial flux motor in an embodiment of the present invention;

[0025] Figure 3 This is an exploded view of the stator assembly in an embodiment of the present invention;

[0026] Figure 4 As described in the embodiments of the present invention Figure 1 Enlarged structural diagram at point A;

[0027] Figure 5 This is an exploded view of the stator core structure in an embodiment of the present invention;

[0028] Figure 6 As described in the embodiments of the present invention Figure 5 Enlarged structural diagram at point B;

[0029] Figure 7This is a schematic diagram of the winding assembly in an embodiment of the present invention;

[0030] Figure 8 This is a schematic diagram of the insulating frame structure in an embodiment of the present invention;

[0031] Figure 9 This is a schematic diagram of the cover plate in an embodiment of the present invention.

[0032] Figure 10 This is an exploded view of the rotor assembly in an embodiment of the present invention;

[0033] Figure 11 This is a cross-sectional view of the rotor assembly in an embodiment of the present invention.

[0034] Reference numerals: 1. Stator assembly; 11. Stator core; 11a. Magnetic yoke; 11a1. Through-hole structure; 12. Stator tooth; 12a. Limiting slot; 13. Winding assembly; 13a. Insulating frame; 13a1. Fixed edge; 13a2. Snap-fitting edge; 13a3. Limiting stop edge; 13a4. Snap-fitting tooth; 13a5. Hollow hole; 13b. Stator winding; 14. Housing; 14a. Inner ring housing; 14b. Outer ring housing; 14c. Cover plate; 14c1. Receiving slot; 14c2. Limiting strip; 15. Long positioning pin; 16. Short positioning pin; 17. Inner pressure ring; 18. Outer pressure ring; 2. Bearing; 3. Rotor assembly; 31. Rotor shaft; 32. Rotor inner ring; 33. Rotor support; 34. Magnet; 4. End cover. Detailed Implementation

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0036] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0038] like Figures 1 to 11 The dual-rotor single-stator axial flux motor structure shown includes:

[0039] The stator assembly 1, bearing 2, and two rotor assemblies 3 respectively located on both sides of the stator assembly 1 are coaxially arranged. Figure 1 As shown, the stator assembly 1, rotor assembly 3, and bearing 2 are all arranged along the same axis, forming the basic topology of an axial flux motor. The rotor shaft 31 passes through the interior of the stator assembly 1, and the two rotor assemblies 3 are respectively located on opposite axial sides of the stator assembly 1. It should be noted that the bearing 2 can be implemented in various ways; it can be a rolling bearing 2, a sliding bearing 2, or any one of the following structures: a deep groove ball bearing 2, an angular contact bearing 2, a cylindrical roller bearing 2, or a tapered roller bearing 2, or a combination of the above bearing 2 structures.

[0040] Stator assembly 1, such as Figure 3 As shown, the assembly 1 includes a stator core 11, stator teeth 12 disposed on both sides of the stator core 11, a winding assembly 13 mounted on the stator teeth 12, and a housing 14 disposed around the stator core 11 and the winding assembly 13. The stator core 11 has a ring structure with stator teeth 12 disposed on both sides. The stator teeth 12 are evenly distributed around the circumference of the stator core 11. The winding assembly 13 is disposed on the stator teeth 12 and is used to form a rotating magnetic field when energized. The housing 14 is disposed around the stator core 11 and the winding assembly 13 and is used to externally cover and support the stator structure. It should be noted that the stator core 11 can be a monolithic core structure, a laminated core structure formed by stacking multiple laminations, or a segmented spliced ​​core structure. It should also be noted that the stator teeth 12 are evenly distributed around the stator core 11, and their structural form can be any one or more of the following: straight tooth structure, helical tooth structure, or tooth tip arc transition structure.

[0041] Two rotor assemblies 3, such as Figure 4 As shown, all components are connected to the rotor shaft 31, which is sleeved within the stator assembly 1. The rotor assembly 3 and winding assembly 13 are positioned opposite each other, allowing the rotor to interact with the stator magnetic field on both sides of the stator. The rotor shaft 31 drives the two rotor assemblies 3 to rotate synchronously, thereby achieving mechanical energy output. It should be noted that the rotor assembly 3 can be a surface-mounted permanent magnet rotor structure, an embedded permanent magnet rotor structure, or any combination of one or more of the following: a ring arrangement of magnets 34 or a segmented arrangement of magnets 34.

[0042] Among them, such as Figure 3 , Figure 4As shown, bearing 2 is sleeved on rotor shaft 31 and located on the outer periphery of rotor shaft 31. Bearing 2 supports the rotational movement of rotor shaft 31, enabling it to rotate stably around its axis. The outer side of the two rotor assemblies 3 also has end caps 4 fixedly connected to housing 14. End caps 4 are provided on the outer regions of both sides of stator assembly 1, and are fixedly connected to housing 14, thereby sealing and fixing both ends of the motor. It should be noted that rotor shaft 31 can be a solid shaft structure, a hollow shaft structure, a stepped shaft structure, or a combined shaft structure. Similarly, end caps 4 can be an integral end cap structure, a split end cap structure, or any of the following forms: a reinforcing rib structure or a lightweight hollow structure.

[0043] like Figure 5 As shown, the stator core 11 includes a yoke 11a. Multiple through-hole structures 11a1, radially distributed along the stator core 11, are disposed inside the yoke 11a. Connecting members of the connecting housing 14 pass through the through-hole structures 11a1. The yoke 11a is located in the middle of the stator core 11 and is used to connect the stator teeth 12 structures on both sides of the stator core 11, thereby forming an overall magnetic flux loop structure of the stator core 11. Stator teeth 12 structures are respectively provided on both sides of the stator core 11. The stator teeth 12 structures are integrally or separately connected to the yoke 11a. The stator teeth 12 are evenly distributed circumferentially along the yoke 11a, that is, multiple stator teeth 12 are arranged in a circular array around the central axis of the yoke 11a to ensure the symmetry of the electromagnetic effect. During stator operation, each stator tooth 12 cooperates with the winding to form multiple uniformly distributed electromagnetic action areas, thereby making the stator core 11 more uniformly distributed in terms of force and magnetic field in the circumferential direction. The magnetic yoke 11a is used to carry the magnetic flux transmission path between the stator teeth 12, so that the magnetic flux can form a closed loop structure inside the stator core 11.

[0044] Connectors are installed inside each through-hole structure 11a1. The connectors are installed through the through-hole structure 11a1 and are used to connect the housing 14, so that the stator core 11 is fixedly connected to the housing 14 through the connectors. The connectors are arranged in the radial direction of the through-hole structure 11a1, and their two ends are respectively matched with the structure of the housing 14, thereby realizing the structural fixation and positional constraint between the stator core 11 and the housing 14. This allows the yoke 11a to form a magnetic flux circuit while being reliably connected to the housing 14 through the through-hole structure 11a1 and the connectors, thereby improving the overall structural stability and assembly reliability of the stator assembly 1.

[0045] During operation, when the winding assembly 13 in the stator assembly 1 is energized, it generates an axially distributed rotating magnetic field on both sides of the stator core 11. This magnetic field acts on the two rotor assemblies 3 located on both sides of the stator assembly 1, causing the two rotor assemblies 3 to rotate synchronously around the same rotor shaft 31 under the action of electromagnetic force, and driving the rotor shaft 31 to achieve mechanical output. During the rotation of the rotor shaft 31, the bearing 2 provides radial support and rotational guidance for the rotor shaft 31 to ensure stable operation of the rotor shaft 31 inside the stator assembly 1. The stator core 11 forms a stable magnetic flux channel with the winding assembly 13 through the stator teeth 12 on both sides, so that electromagnetic energy is axially transmitted between the stator and the rotor. The end covers 4 on both sides are fixedly connected to the housing 14 to structurally enclose and fix the two ends of the motor in the axial direction, thereby ensuring that the whole machine has good structural stability and operational reliability under high-speed operation.

[0046] like Figure 3 , Figure 4 As shown, the housing 14 includes an inner ring shell 14a and an outer ring shell 14b arranged along the length of the stator core 11, and a cover plate 14c sealingly connected to both ends of the inner ring shell 14a and the outer ring shell 14b. The inner ring shell 14a is located inside the stator core 11, and the outer ring shell 14b is located outside the stator core 11. The inner ring shell 14a and the outer ring shell 14b together form a radial covering structure for the stator core 11, keeping the stator assembly 1 in a ring-shaped installation state. The inner ring shell 14a and the outer ring shell 14b are sealed at both ends of the axial direction through the cover plate 14c, thereby forming a closed structure for both ends of the stator assembly 1 in the axial direction. The stator core 11 and the winding assembly 13 are covered between the inner ring shell 14a and the outer ring shell 14b, thereby improving the structural integrity and assembly stability of the stator assembly 1.

[0047] like Figure 3 , Figure 6 As shown, the connector includes long locating pins 15. One end of the long locating pin 15 extends into the inner ring shell 14a for fixed connection, and the other end extends into the outer ring shell 14b for fixed connection. There are at least four long locating pins 15, which are evenly distributed. Long locating pins 15 pass through the through-hole structure 11a1. One end of the long locating pin 15 extends into the inner ring shell 14a for fixed connection, and the other end extends into the outer ring shell 14b for fixed connection. This allows the inner ring shell 14a and the outer ring shell 14b to form a radially through connection through the long locating pins 15. There are at least four long locating pins 15, which are evenly distributed. Multiple long locating pins 15 are arranged symmetrically or at even intervals around the central axis of the stator core 11, forming a uniformly stressed connection support structure in the circumferential direction. This allows the inner ring shell 14a and the outer ring shell 14b to form a multi-point rigid connection structure in the yoke region 11a through multiple long locating pins 15, thereby improving the overall structural stability and connection reliability of the stator assembly 1 during operation.

[0048] Continue to refer to Figure 3 , Figure 6 Multiple through-hole structures 11a1 are provided between two adjacent stator teeth 12. The connecting component also includes short locating pins 16, one end of which abuts against the outer ring shell 14b, and the other end extends into the inner ring shell 14a for fixed connection. The through-hole structures 11a1 are provided between two adjacent stator teeth 12, and each through-hole structure 11a1 is arranged circumferentially around the stator core 11, forming multiple radially penetrating installation channel structures inside the yoke 11a. Short locating pins 16 also pass through the through-hole structures 11a1. One end of the short locating pin 16 abuts against the outer ring shell 14b, and the other end extends into the inner ring shell 14a for fixed connection. The short locating pin 16 is provided in the partial through-hole structure 11a1 of the yoke 11a, with one end extending into the inner ring shell 14a and fixedly connected to the inner ring shell 14a, thereby providing a supporting connection for the connection structure between the inner ring shells 14a and improving the overall structural stability and connection reliability of the stator assembly 1.

[0049] like Figure 3 , Figure 4 As shown, an inner pressure ring 17 is provided between the inner shell 14a and the stator core 11, and an outer pressure ring 18 is provided between the outer shell 14b and the stator core 11. Both the inner pressure ring 17 and the outer pressure ring 18 abut against the magnetic yoke 11a on one side. This creates a pressing fit between the inner shell 14a, the outer shell 14b, and the stator core 11. The inner pressure ring 17 is used to support and position the inner side of the stator core 11, and the outer pressure ring 18 is used to support and position the outer side of the stator core 11. The cooperation between the two and the magnetic yoke 11a causes the stator core 11 to be subjected to double-sided pressing constraint in the radial direction, improving the connection stability and assembly reliability between the stator core 11 and the shell 14.

[0050] like Figure 6 , Figure 9As shown, the cover plate 14c has a receiving groove 14c1 facing the stator core 11. The receiving groove 14c1 is recessed along one side of the cover plate 14c facing the stator core 11 and is used for assembly and mating with the end of the stator core 11. A limiting strip 14c2 is provided in the receiving groove 14c1. The limiting strip 14c2 extends along a local area of ​​the receiving groove 14c1 and is integrally or separately fixedly connected with the receiving groove 14c1. It is used to limit the position of the inserted stator core 11. The stator core 11 extends into the receiving groove 14c1, so that the stator core 11 and the cover plate 14c form an embedded mating structure. The stator tooth 12 has a limiting groove 12a that mates with the limiting strip 14c2. When the stator core 11 is assembled into the receiving groove 14c1, the limiting strip 14c2 is embedded in the limiting groove 12a, thereby subjecting the stator core 11 to dual positional constraints in the axial and circumferential directions. This achieves a positioning fit between the stator core 11 and the cover plate 14c, forming a stable end positioning structure between the cover plate 14c and the stator core 11, thereby improving the accuracy and structural stability of the axial assembly of the stator assembly 1.

[0051] like Figure 7 , Figure 8 As shown, the winding assembly 13 includes two insulating frames 13a, which are respectively disposed on both sides of the stator winding 13b to support and insulate the stator winding 13b, so as to maintain the stator winding 13b in a stable installation position; and a stator winding 13b disposed between the two insulating frames 13a. The insulating frame 13a includes a fixing edge 13a1 that fits against the side of the stator winding 13b, a fastening edge 13a2 that extends toward the inner periphery of the stator winding 13b, and a limiting stop edge 13a3 that extends toward the outer periphery of the stator winding 13b. The fixed edge 13a1 abuts against the side of the stator winding 13b, providing lateral support and positioning for the stator winding 13b. The engaging edge 13a2 forms a mating connection between the two insulating frames 13a. The limiting edge 13a3 limits the outer periphery of the stator winding 13b, thereby restricting its radial movement. This creates a covering mounting structure between the two insulating frames 13a and the stator winding 13b, improving the assembly stability and structural consistency of the winding assembly 13.

[0052] Continue to refer to Figure 8 As shown, the snap-fitting edge 13a2 includes snap-fitting teeth 13a4. When the two insulating frames 13a are snapped together, the snap-fitting teeth 13a4 engage and abut against each other. The snap-fitting teeth 13a4 structure is provided on the snap-fitting edge 13a2. When the two insulating frames 13a are positioned opposite each other and snapped together, the snap-fitting teeth 13a4 engage and abut against each other, thereby forming a fixed connection between the two insulating frames 13a in the axial direction.

[0053] like Figure 8As shown, when the two insulating frames 13a are fastened together, at least two perforated holes 13a5 are formed between the fastening edges 13a2, and coolant flows through the perforated holes 13a5. At least two perforated holes 13a5 are formed on the mating edges of the two insulating frames 13a. The perforated holes 13a5 are located in the interval area between the fastening teeth 13a4, forming a through-hole structure inside the insulating frame 13a. Cooling medium can flow through the perforated holes 13a5, allowing the cooling medium to flow inside the insulating frame 13a to exchange heat with the stator winding 13b area, thereby improving the heat dissipation conditions of the winding area. This allows the insulating frame 13a to form an internal cooling channel structure while ensuring the structural fastening strength, thus improving the heat dissipation performance and operational reliability of the winding assembly 13.

[0054] like Figure 10 , Figure 11 As shown, the rotor assembly 3 also includes an inner rotor ring 32 fixedly connected to the outer periphery of the rotor shaft 31. The rotor assembly 3 includes a rotor support 33 fixedly connected to the inner rotor ring 32, and a magnet 34 disposed on the rotor support 33 and opposite to the winding assembly 13. The magnet 34 is disposed in the axial position of the rotor support 33 and opposite to the winding assembly 13, forming an electromagnetic interaction area between the rotor assembly 3 and the stator assembly 1. The bearing 2 is disposed between the inner rotor ring 32 and the rotor shaft 31. The bearing 2 is used to support the rotational fit between the rotor shaft 31 and the inner rotor ring 32 to ensure the stability and coaxiality of the rotor shaft 31 during rotation, so that the rotor assembly 3 can rotate stably under the drive of the rotor shaft 31 and form an axial magnetic flux interaction relationship with the stator winding 13b, thereby realizing the energy conversion and mechanical output of the motor.

[0055] Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to this invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A dual-rotor single-stator axial flux motor structure, characterized in that, include: The stator assembly, bearings, and two rotor assemblies respectively disposed on both sides of the stator assembly are arranged coaxially. The stator assembly includes a stator core, stator teeth disposed on both sides of the stator core, a winding assembly mounted on the stator teeth, and a housing disposed on the outer periphery of the stator core and the winding assembly. Both rotor assemblies are connected to a rotor shaft, which is sleeved inside the stator assembly. The rotor assembly and the winding assembly are arranged opposite to each other. The bearing is sleeved on the rotor shaft, and the two rotor assemblies also have an end cap fixedly connected to the housing on the side facing outward. The stator core includes a yoke, and the yoke has multiple through holes arranged radially along the stator core. A connector for connecting the housing passes through the through holes.

2. The dual-rotor single-stator axial flux motor structure according to claim 1, characterized in that, The housing includes an inner ring shell and an outer ring shell arranged along the length of the stator core, and a cover plate that is sealed to both ends of the inner ring shell and the outer ring shell.

3. The dual-rotor single-stator axial flux motor structure according to claim 2, characterized in that, The connector includes long positioning pins, one end of which extends into the inner ring shell for fixed connection, and the other end of which extends into the outer ring shell for fixed connection. There are at least four long positioning pins that are evenly distributed.

4. The dual-rotor single-stator axial flux motor structure according to claim 3, characterized in that, The through-hole structure has multiple holes and is disposed between two adjacent stator teeth. The connector also includes a short positioning pin, one end of which abuts against the outer ring shell and the other end extends into the inner ring shell for fixed connection.

5. The dual-rotor single-stator axial flux motor structure according to claim 2, characterized in that, An inner pressure ring is provided between the inner ring shell and the stator core, and an outer pressure ring is provided between the outer ring shell and the stator core. Both the inner pressure ring and the outer pressure ring abut against the magnetic yoke on one side.

6. The dual-rotor single-stator axial flux motor structure according to claim 2, characterized in that, The cover plate has a receiving groove facing the stator core, and a limiting strip is provided in the receiving groove. The stator core extends into the receiving groove, and the stator teeth have limiting grooves that cooperate with the limiting strip.

7. The dual-rotor single-stator axial flux motor structure according to claim 1, characterized in that, The winding assembly includes two insulating frames and a stator winding disposed between the two insulating frames. The insulating frame includes a fixed edge that fits against the side of the stator winding, a snap-fitting edge that extends toward the inner periphery of the stator winding, and a limiting stop edge that extends toward the outer periphery of the stator winding.

8. The dual-rotor single-stator axial flux motor structure according to claim 7, characterized in that, The fastening edging includes fastening teeth, and when the two insulating frames are fastened together, the fastening teeth cooperate and abut against each other.

9. The dual-rotor single-stator axial flux motor structure according to claim 8, characterized in that, When the two insulating frames are fastened together, at least two hollow holes are formed between the fastening edges, and coolant flows through the hollow holes.

10. The dual-rotor single-stator axial flux motor structure according to claim 1, characterized in that, It also includes a rotor inner ring fixedly connected to the outer periphery of the rotor shaft. The rotor assembly includes a rotor bracket fixedly connected to the rotor inner ring, and a magnet disposed on the rotor bracket and disposed opposite to the winding assembly. The bearing is disposed between the rotor inner ring and the rotor shaft.

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