Axial flux motor rotor and motor

Abstract

The application discloses an axial flux motor rotor and a motor, and relates to the technical field of axial flux motors.The axial flux motor rotor comprises a rotor support provided with a rotor core slot on one side, a rotor core assembled in the rotor core slot and fixed relative to the rotor support, and a magnetic steel located on the side, away from the rotor core slot, of the rotor core.The magnetic steel is connected with a support piece, and the support piece comprises a first support plate located on the side of the magnetic steel facing the rotor core.The magnetic steel presses the first support plate onto the rotor core, so that a first gap is formed between the magnetic steel and the rotor core.The first gap is used for accommodating glue to bond the magnetic steel and the rotor core.The first gap can effectively ensure the amount of glue between the magnetic steel and the rotor core, and improve the phenomenon that the glue cannot be stored between the magnetic steel and the rotor core.Meanwhile, the magnetic steel does not directly contact the rotor core by the contact between the first support plate and the rotor core, so that the phenomenon that the coating of the magnetic steel is damaged due to friction after the magnetic steel contacts the rotor core during assembly can be effectively improved.

Description

Technical Field

[0001] This invention relates to the field of axial flux motor technology, and particularly to an axial flux motor rotor and motor. Background Technology

[0002] Axial flux motors, also known as disc motors, are a special type of motor in which the magnetic flux flows along the axial direction of the motor. The rotor of an axial flux motor is typically a thin disc structure. During operation, the rotor is subjected to various stresses, including magnetic pull, centrifugal force, torque, thermal stress, inertial forces caused by rotor imbalance or sudden load changes, and repulsive forces between magnets. This places high demands on the mechanical strength and reliability of the magnets, rotor core, and rotor support mounted on the rotor, as well as their mounting methods.

[0003] In existing technical solutions, magnets are generally bonded to the surface of the rotor core. During the bonding process, due to the strong attraction between the magnet and the rotor core, the magnet and the core are very close together. On the one hand, this prevents glue from remaining between the magnet and the rotor core, resulting in a weak bond and a risk of the magnet falling off during operation. On the other hand, the coating between the contact surfaces of the magnet and the rotor core may be damaged, leading to a risk of oxidation and demagnetization of the magnet.

[0004] Therefore, how to provide an axial flux motor rotor and motor that can at least partially solve the above-mentioned drawbacks is a technical problem that needs to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to provide an axial flux motor rotor and motor that can effectively ensure the amount of adhesive between the magnet and the rotor core, improve the phenomenon that adhesive cannot be retained between the magnet and the rotor core, and at the same time, by not directly contacting the rotor core with the magnet, it can effectively improve the phenomenon that the magnet coating is damaged due to friction after the magnet comes into contact with the rotor core during the assembly process.

[0006] To achieve the above objectives, the present invention provides an axial flux motor rotor, comprising a rotor support with a core slot on one side, a rotor core assembled in the core slot and fixed relative to the rotor support, and a magnet located on the side of the rotor core away from the core slot. The magnet is connected to a support member, which includes a first support plate located on the side of the magnet facing the rotor core. The magnet presses the first support plate against the rotor core, forming a first gap between the magnet and the rotor core. The first gap is used to accommodate adhesive for bonding the magnet and the rotor core.

[0007] In one possible implementation, magnets are evenly arranged along the circumference of the rotor core, and a pressure plate is provided between adjacent magnets. The pressure plate extends radially and is connected to the rotor support. A limiting part extending circumferentially along the rotor support is provided on the side of the pressure plate away from the rotor support. A groove adapted to the limiting part is provided on the side of the magnet away from the rotor core. The groove and the limiting part slide in the radial direction to guide the radial movement of the magnet, so that the magnet is installed on the side of the rotor core away from the core slot.

[0008] In one possible implementation, the support further includes a second support plate connected to the first support plate. The second support plate is located on at least one side of the magnet in the circumferential direction of the rotor core. The side of the second support plate opposite to the magnet is in contact with the pressure plate, so that a second gap is formed between the magnet and the pressure plate. The second gap is used to accommodate adhesive for bonding the magnet and the pressure plate.

[0009] In one possible implementation, the rotor core includes a core body, an outer core fixing ring, and an inner core fixing ring. The core body has a ring-shaped structure, and the outer and inner core fixing rings are open ring-shaped elastic structures. The inner circumferential surface of the outer core fixing ring is fitted onto the outer circumferential surface of the core body in an interference fit, and the inner circumferential surface of the core body is fitted onto the outer circumferential surface of the inner core fixing ring in an interference fit.

[0010] In one possible implementation, a radially extending dovetail groove is provided on the side of the rotor core facing the rotor support. The core tie rod is fixed in the dovetail groove to restrict the relative movement of the core body, the outer core fixing ring, and the inner core fixing ring. A radially extending rectangular groove is provided on the side of the rotor core away from the rotor support. The rectangular groove corresponds one-to-one with the pressure plate and is used for the pressure plate assembly to restrict the rotation of the rotor core relative to the rotor support.

[0011] In one possible implementation, the rotor support includes an inner circular support and an outer circular support arranged concentrically, with the outer circular support and the inner circular support spaced apart to form a core slot.

[0012] An outer circular support is connected to an outer circular baffle, and an inner circular support is connected to an inner circular baffle. The outer circular baffle has a first abutting part facing the inner circular baffle, and the inner circular baffle has a second abutting part facing the outer circular baffle. The first abutting part is used to abut the outer side of the magnet, and the second abutting part is used to abut the inner side of the magnet, so as to restrict the movement of the magnet in the radial direction of the rotor support.

[0013] In one possible implementation, the outer circular support is provided with a first stop and a first mounting hole; the outer circular baffle is also provided with a first positioning stop for cooperating with the first stop, a first contact surface for contacting the outer circular support, and a second contact surface for contacting the side of the rotor core away from the rotor support. The first contact surface is provided with a second mounting hole corresponding to the first mounting hole, and the first connecting member passes through the corresponding first mounting hole and second mounting hole to fix the outer circular baffle relative to the outer circular support.

[0014] In one possible implementation, the inner circular support is provided with a second stop and a third mounting hole; the inner circular baffle is also provided with a second positioning stop for cooperating with the second stop, a third contact surface for contacting the inner circular support, and a fourth contact surface for contacting the side of the rotor core away from the rotor support. The third contact surface has a fourth mounting hole corresponding to the third mounting hole. The second connector passes through the corresponding third mounting hole and fourth mounting hole to fix the inner circular baffle relative to the inner circular support.

[0015] In one possible implementation, all magnets are fan-shaped structures, each magnet includes several magnet blocks arranged in a radial direction, and each magnet block is connected to a support member at both ends in the circumferential direction of the rotor core. The support member also includes a third support plate connected to the first support plate and the second support plate, and the third support plate is located on the side of the magnet block facing the second abutment portion.

[0016] In one possible implementation, the rotor support has a plurality of ventilation holes, which are evenly arranged along the circumference of the rotor support to allow air to circulate between the inner circumference of the inner circular support and the outer circumference of the outer circular support.

[0017] This application also provides an electric motor, including the axial flux motor rotor of any of the above.

[0018] Compared with the prior art, the technical solution provided by the present invention has at least the following beneficial effects:

[0019] The magnet is connected to a support member, which includes a first support plate located on the side of the magnet facing the rotor core. When the magnet is installed onto the rotor core, the first support plate creates a first gap between the magnet and the rotor core. This first gap effectively ensures the amount of adhesive between the magnet and the rotor core, improving the situation where adhesive cannot be retained between the magnet and the rotor core. At the same time, because the first support plate is in contact with the rotor core, the magnet does not directly contact the rotor core, which effectively improves the situation where friction between the magnet and the rotor core during assembly causes damage to the magnet coating. Attached Figure Description

[0020] 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 embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the axial flux motor rotor provided in an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of the magnet provided in an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the magnet provided in an embodiment of the present invention from another perspective;

[0024] Figure 4 for Figure 3 A magnified view of a section at point A in the middle;

[0025] Figure 5 This is a schematic diagram of the rotor core structure provided in an embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of the rotor core provided in an embodiment of the present invention from another perspective.

[0027] Figure 7 This is a schematic diagram of the rotor support structure provided in an embodiment of the present invention;

[0028] Figure 8 This is a schematic diagram of the structure of the inner circular baffle provided in an embodiment of the present invention;

[0029] Figure 9 This is a schematic diagram of the inner circular baffle provided in an embodiment of the present invention from another perspective.

[0030] Figure 10 This is a schematic diagram of the structure of the outer circular baffle provided in an embodiment of the present invention;

[0031] Figure 11 This is a schematic diagram of the outer circular baffle provided in an embodiment of the present invention from another perspective.

[0032] Figure 12 This is a schematic diagram of the structure of the pressure plate provided in an embodiment of the present invention;

[0033] Figure 13 This is a schematic diagram of the pressure plate provided in an embodiment of the present invention from another perspective;

[0034] Figure 14This is a schematic diagram of the structure of the magnetic pusher tooling provided in an embodiment of the present invention.

[0035] in:

[0036] 1-Magnet, 11-Magnet block, 12-Groove, 13-Support component, 131-First support plate, 132-Second support plate, 133-Third support plate;

[0037] 2-Rotor core, 21-Core body, 22-Outer ring of core, 23-Inner ring of core, 24-Core tie rod;

[0038] 3-Rotor support, 31-Core slot, 32-First stop, 33-Second stop, 34-Ventilation hole, 35-Stiffening plate;

[0039] 4-Inner circular baffle, 41-Fourth contact surface, 42-Third contact surface, 43-Second positioning stop, 44-Fourth mounting hole;

[0040] 5-Outer circular baffle, 51-Second contact surface, 52-First contact surface, 53-First positioning stop, 54-Second mounting hole, 55-Dynamic balance block mounting hole;

[0041] 6-Pressure plate, 61-Limiting part, 62-Weight reduction hole, 63-Fifth mounting hole;

[0042] 7-Spindle;

[0043] 8-ring bond;

[0044] 9-Push magnet tooling. Detailed Implementation

[0045] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0046] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0047] In the description of this invention, it should be understood that the terms "inner" and "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the position or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0048] The purpose of this invention is to provide an axial flux motor rotor and motor that can effectively ensure the amount of adhesive between the magnet and the rotor core, improve the phenomenon that adhesive cannot be retained between the magnet and the rotor core, and at the same time, by not directly contacting the rotor core with the magnet, it can effectively improve the phenomenon that the magnet coating is damaged due to friction after the magnet comes into contact with the rotor core during the assembly process.

[0049] Please see Figure 1 , Figure 2 and Figure 3 To achieve the above objectives, the present invention provides an axial flux motor rotor, comprising a rotor support 3 with a core slot 31 on one side, a rotor core 2 assembled in the core slot 31 and fixed relative to the rotor support 3, and a magnet 1 located on the side of the rotor core 2 away from the core slot 31. The magnet 1 is connected to a support member 13, which includes a first support plate 131 located on the side of the magnet 1 facing the rotor core 2. The first support plate 131 may be made of thin stainless steel plate, and the thickness of the first support plate 131 may be, but is not limited to, 0.1 mm. The magnet 1 presses the first support plate 131 onto the rotor core 2, forming a first gap between the magnet 1 and the rotor core 2. The thickness of the first gap is consistent with the thickness of the first support plate 131. The first gap is used to accommodate adhesive for bonding the magnet 1 and the rotor core 2.

[0050] The magnet 1 is connected to a support member 13. The support member 13 includes a first support plate 131 located on the side of the magnet 1 facing the rotor core 2. When the magnet 1 is installed on the rotor core 2, the first support plate 131 can form a first gap between the magnet 1 and the rotor core 2. The first gap can effectively ensure the amount of glue between the magnet 1 and the rotor core 2, improve the phenomenon that the magnet 1 cannot retain glue between the magnet 1 and the rotor core 2, and make the magnet 1 and the rotor core 2 firmly bonded. This effectively improves the risk of the magnet 1 falling off during operation due to poor bonding of the magnet 1 in the prior art. At the same time, because the first support plate 131 is in contact with the rotor core 2, the magnet 1 does not directly contact the rotor core 2. This can effectively improve the phenomenon that the coating of the magnet 1 is damaged due to friction after the magnet 1 comes into contact with the rotor core 2 during the assembly process, and effectively reduce the risk of oxidation and demagnetization of the magnet 1.

[0051] In one possible implementation, magnets 1 are uniformly arranged circumferentially along the rotor core 2. Each magnet 1 has a fan-shaped structure, and a pressure plate 6 is provided between adjacent magnets 1. The pressure plate 6 extends radially and connects to the rotor support 3. A limiting portion 61 extending circumferentially along the rotor support 3 is provided on the side of the pressure plate 6 facing away from the rotor support 3. A magnet mounting position is formed between adjacent pressure plates 6. A groove 12 adapted to the limiting portion 61 is provided on the side of the magnet 1 facing away from the rotor core 2, and the groove 12 is located at both ends of the magnet 1 circumferentially around the rotor core 2. The two grooves 12 and the two limiting portions 6... 1. It can slide in the radial direction to guide the radial movement of the magnet 1, effectively reducing the risk of breakage during the assembly of the magnet 1, so that the magnet 1 is installed on the side of the rotor core 2 away from the core slot 31, that is, to install the magnet 1 to the above-mentioned magnet installation position. The limiting part 61 is located on the side of the groove 12 away from the rotor core 2. By the limiting part 61 abutting against the groove 12 on the side facing the groove 12, it can restrict the magnet 1 from disengaging in the direction away from the rotor core 2, that is, restrict the magnet 1 from disengaging in the axial direction of the rotor core 2.

[0052] Please see Figure 4 In one possible implementation, the support member 13 includes a second support plate 132 connected to the first support plate 131. The second support plate 132 may be made of thin stainless steel plate, and the thickness of the second support plate 132 may be, but is not limited to, 0.1 mm. The second support plate 132 is located on at least one side of the magnet 1 in the circumferential direction of the rotor core 2. The side of the second support plate 132 away from the magnet 1 is in contact with the pressure plate 6, so that a second gap is formed between the magnet 1 and the pressure plate 6. The thickness of the second gap is consistent with the thickness of the second support plate 132. The second gap is used to accommodate adhesive for bonding the magnet 1 and the pressure plate 6. The second gap can effectively ensure the amount of adhesive between the magnet 1 and the pressure plate 6, and further ensure the reliability of the bonding between the magnet 1 and the pressure plate 6.

[0053] Please see Figure 5 and Figure 6In one possible implementation, the rotor core 2 includes a core body 21, an outer core fixing ring 22, and an inner core fixing ring 23. The core body 21 can be made of wound silicon steel sheets and has a ring-shaped structure. The outer core fixing ring 22 and the inner core fixing ring 23 are ring-shaped elastic structures with openings. The inner diameter of the outer core fixing ring 22 is slightly smaller than the outer diameter of the core body 21, and the outer diameter of the inner core fixing ring 23 is slightly larger than the inner diameter of the core body 21. Both the outer core fixing ring 22 and the inner core fixing ring 23 have openings of 1-2mm, ensuring that the outer core fixing ring 22 and the inner core fixing ring 23 have a certain elasticity in the radial direction. The inner circumferential surface of the outer core fixing ring 22 is fitted onto the outer circumferential surface of the core body 21 in an interference fit manner, and the inner circumferential surface of the core body 21 is fitted onto the outer circumferential surface of the inner core fixing ring 23 in an interference fit manner. This ensures the winding pressure of the core body 21 while facilitating assembly.

[0054] Furthermore, a radially extending dovetail groove is provided on the side of the rotor core 2 facing the rotor support 3. The core tie rod 24 is fixed in the dovetail groove. Then, the core tie rod 24, the core body 21, the outer core fixing ring 22, and the inner core fixing ring 23 are welded into an integral structure to limit the relative movement of the core body 21, the outer core fixing ring 22, and the inner core fixing ring 23. This further ensures the robustness and reliability of the rotor core 2 and effectively avoids the problems of easy deformation and poor reliability that occur in the prior art after the core is wound and fixed by laser welding. At the same time, the core tie rod 24 is set on the side of the rotor core 2 where the magnet 1 is not installed, which can effectively prevent the influence of eddy current loss on the rotor core 2 and increase the reliability of the rotor core 2 operation. A radially extending rectangular groove is provided on the side of the rotor core 2 away from the rotor support 3. The rectangular groove corresponds one-to-one with the pressure plate 6. The rectangular groove is used for the assembly of the pressure plate 6 to limit the rotation of the rotor core 2 relative to the rotor support 3.

[0055] Please see Figure 7 In one possible implementation, the rotor support 3 includes an inner circular support and an outer circular support arranged concentrically, with the outer circular support and the inner circular support spaced apart to form a core slot 31; an outer circular baffle 5 is connected to the outer circular support, and an inner circular baffle 4 is connected to the inner circular support. The outer circular baffle 5 has a first abutting portion facing the inner circular baffle 4, and the inner circular baffle 4 has a second abutting portion facing the outer circular baffle 5. The first abutting portion is used to abut the outer side surface of the magnet 1, and the second abutting portion is used to abut the inner side surface of the magnet 1 to restrict the movement of the magnet 1 in the radial direction of the rotor support 3.

[0056] The rotor support 3 is heat-fitted onto the rotating shaft 7, and the axial displacement of the rotor support 3 is restricted by the ring key 8. The ring key 8 is welded to the rotating shaft 7 and the rotor support 3 as a whole. The outer circle fixing ring 22 of the rotor core 2 is heat-fitted into the core groove 31 of the rotor support 3, so that the outer circle fixing ring 22 of the rotor core 2 is tightly fitted to the inner wall of the outer circle support. The inner circle fixing ring 23 of the rotor core 2 has a certain gap with the rotor support 3. In order to ensure the reliability of the fixing of the rotor support 3 and the rotor core 2, the pressure plate 6 and the inner circle baffle 4 are first connected to the rotor support 3. Then, the magnet 1 is installed in sequence on the magnet mounting position on the rotor core 2 using the magnet pushing fixture 9. After that, the outer circle baffle 5 is connected to the rotor support 3. The outer circle baffle 5, the inner circle baffle 4, the pressure plate 6 and the side of the rotor core 2 facing the magnet 1 are used to limit the position of the magnet 1 to ensure the reliable fixing of the magnet 1.

[0057] Please see Figure 8 , Figure 9 , Figure 10 and Figure 11 In one possible implementation, the outer circular support is provided with a first stop 32 and a first mounting hole; the outer circular baffle 5 is also provided with a first positioning stop 53 for cooperating with the first stop 32, a first contact surface 52 for contacting the outer circular support, and a second contact surface 51 for contacting the side of the rotor core 2 away from the rotor support 3. The first contact surface 52 has a second mounting hole 54 corresponding to the first mounting hole. The first connecting member passes through the corresponding first mounting hole and second mounting hole 54 to fix the outer circular baffle 5 relative to the outer circular support; the inner circular support is provided with The second stop 33 and the third mounting hole, the number of the first mounting hole and the third mounting hole can be adjusted according to actual needs; the inner circle baffle 4 is also provided with a second positioning stop 43 for cooperating with the second stop 33, a third contact surface 42 for contacting the inner circle support, and a fourth contact surface 41 for contacting the side of the rotor core 2 away from the rotor support 3. The third contact surface 42 is provided with a fourth mounting hole 44 corresponding to the third mounting hole. The second connecting piece passes through the corresponding third mounting hole and fourth mounting hole 44 so that the inner circle baffle 4 is fixed relative to the inner circle support.

[0058] It is understood that the first mounting hole, the second mounting hole 54, the third mounting hole, and the fourth mounting hole 44 can all be bolt holes. The first connector and the second connector are bolts adapted to the corresponding bolt holes. The first connector is threadedly connected to the first mounting hole and the second mounting hole 54, which facilitates the installation and removal of the outer circle baffle 5. The second connector is threadedly connected to the third mounting hole and the fourth mounting hole 44, which facilitates the installation and removal of the inner circle baffle 4. The fourth contact surface 41 of the inner circle baffle 4 and the second contact surface 51 of the outer circle baffle 5 contact the inner circle fixing ring 23 and the outer circle fixing ring 22 of the rotor core 2, respectively, and have... There is a certain pressure to limit the axial and radial displacement of the rotor core 2, so that the rotor core 2 is more reliably fixed on the rotor support 3. The rotor core 2 and the rotor support 3 are fixed by heat fitting. The outer circle baffle 5 is used to fasten the outer circle fixing ring 22 of the rotor core 2 to the rotor support 3, and the inner circle baffle 4 is used to fasten the inner circle fixing ring 23 of the rotor core 2 to the rotor support 3. While ensuring the reliable fixation of the rotor core 2 and the rotor support 3, the eddy current loss of the outer circle baffle 5 and the inner circle baffle 4 is effectively reduced. The outer circle baffle 5 is also provided with a dynamic balance block mounting hole 55 for dynamic balancing of the rotor.

[0059] Please see Figure 12 and Figure 13 It should be noted that the pressure plate 6 has a T-shaped structure. The pressure plate 6 is provided with two fifth mounting holes 63 and several weight reduction holes 62. One fifth mounting hole 63 is located at the outer end of the pressure plate 6 and corresponds to a first mounting hole. The other fifth mounting hole 63 is located at the inner end of the pressure plate 6 and corresponds to a third mounting hole. The pressure plate 6 can also be detachably connected to the rotor support 3 by bolts. The weight reduction holes 62 are used to reduce the weight of the pressure plate 6. The pressure plate 6 only bears a small part of the unbalanced magnetic pull of the magnet 1. The pressure plate 6 can also be made of insulating material, such as epoxy laminate material, to effectively ensure the reliability of the assembly and operation of the magnet 1.

[0060] Please see Figure 14In one possible implementation, the magnet pusher fixture 9 includes a base that can be detachably connected to the first mounting hole, a screw that passes through the base and can move relative to the base, and a clamping member connected to the end of the screw facing the magnet block 11. After the pressure plate 6 and the inner ring baffle are installed to the rotor support 3, the magnet block 11 needs to be installed. When installing the magnet block 11, after the magnet block 11 is installed to a certain position, it is easy to generate a repulsive force between it and the already installed magnet block 11. At this time, the base can be fixed on the first mounting hole so that the base is fixed relative to the rotor support 3. Then, by moving the screw relative to the base, the clamping member abuts against the magnet block 11 and presses the magnet block 11 to a preset position. After the glue solidifies, the next magnet block 11 is installed by moving the screw back or disassembling the base. Then, the above clamping process is repeated to complete the installation of the magnet blocks 11 in sequence.

[0061] In one possible implementation, each magnet 1 comprises a plurality of magnet blocks 11 arranged sequentially in the radial direction. Adjacent magnet blocks 11 in the radial direction are bonded together with adhesive. Each magnet block 11 has a support member 13 connected to both ends in the circumferential direction of the rotor core 2, that is, one magnet block 11 corresponds to two support members 13. The support member 13 also includes a third support plate 133 connected to the first support plate 131 and the second support plate 132. The third support plate 133 may be made of thin stainless steel plate, and the thickness of the third support plate 133 may be, but is not limited to, 0. The support member 13 is an integral structure with a diameter of 0.1mm. The magnet block 11 has a groove on the side facing the second abutment, which is used to make the third support plate 133 located on the side of the magnet block 11 facing the second abutment and flush with the side of the magnet block 11 facing the second abutment. The third support plate 133 can prevent the first support plate 131 and the second support plate 132 from falling off during the assembly of the magnet block 11. At the same time, the groove makes the third support plate 133 recessed into the magnet block 11, effectively avoiding gaps between the magnet blocks 11.

[0062] In one possible implementation, the rotor support 3 has a symmetrical structure on both sides along its own axial direction, with the core slot 31 located on one side. Several radially extending stiffeners 35 are connected between the middle of the two sides of the rotor support 3 and are evenly arranged along the circumference of the rotor support 3. The rotor support 3 also has several ventilation holes 34 located between adjacent stiffeners 35 and evenly arranged along the circumference of the rotor support 3. These ventilation holes 34 are used for air circulation between the inner circumference of the inner circular support and the outer circumference of the outer circular support. The arrangement of the ventilation holes 34 can effectively increase the rotor's load-bearing capacity. At the same time, when the rotor support 3 rotates, the ventilation holes 34 can effectively reduce the temperature of the rotor support 3, further ensuring the reliability of the rotor during operation.

[0063] This application also provides an electric motor, including any of the above-mentioned axial flux motor rotors. The motor also includes the above-mentioned rotating shaft 7 and the above-mentioned ring key 8. By heat-fitting the rotor support 3 onto the rotating shaft 7 and restricting the axial displacement of the rotor support 3 by the ring key 8, the ring key 8 is welded to the rotating shaft 7 and the rotor support 3 as a whole to improve the connection strength of the rotor support 3, the ring key 8 and the rotating shaft 7. The remaining structure of the motor can refer to the prior art, and will not be described in detail here.

[0064] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0065] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0066] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the present invention.

Claims

1. An axial flux motor rotor, comprising a rotor support (3) having a core slot (31) on one side, a rotor core (2) assembled in the core slot (31) and fixed relative to the rotor support (3), and a magnet (1) located on the side of the rotor core (2) facing away from the core slot (31), characterized in that, The magnet (1) is connected to a support member (13), which includes a first support plate (131) located on the side of the magnet (1) facing the rotor core (2). The magnet (1) presses the first support plate (131) onto the rotor core (2), forming a first gap between the magnet (1) and the rotor core (2). The first gap is used to accommodate adhesive to bond the magnet (1) and the rotor core (2).

2. The axial flux motor rotor according to claim 1, characterized in that, The magnets (1) are evenly arranged along the circumference of the rotor core (2), and a pressure plate (6) is provided between adjacent magnets (1). The pressure plate (6) extends radially and is connected to the rotor support (3). The side of the pressure plate (6) away from the rotor support (3) is provided with a limiting part (61) extending circumferentially along the rotor support (3). The side of the magnet (1) away from the rotor core (2) is provided with a groove (12) adapted to the limiting part (61). The groove (12) and the limiting part (61) slide in the radial direction to guide the radial movement of the magnet (1) so that the magnet (1) is installed on the side of the rotor core (2) away from the core slot (31).

3. The axial flux motor rotor according to claim 2, characterized in that, The support member (13) further includes a second support plate (132) connected to the first support plate (131). The second support plate (132) is located on at least one side of the magnet (1) in the circumferential direction of the rotor core (2). The side of the second support plate (132) away from the magnet (1) is in contact with the pressure plate (6), so that a second gap is formed between the magnet (1) and the pressure plate (6). The second gap is used to accommodate glue to bond the magnet (1) and the pressure plate (6).

4. The axial flux motor rotor according to claim 3, characterized in that, The rotor core (2) includes a core body (21), an outer core fixing ring (22), and an inner core fixing ring (23). The core body (21) has a ring-shaped structure. The outer core fixing ring (22) and the inner core fixing ring (23) are ring-shaped elastic structures with openings. The inner circumferential surface of the outer core fixing ring (22) is fitted onto the outer circumferential surface of the core body (21) in an interference fit manner. The inner circumferential surface of the core body (21) is fitted onto the outer circumferential surface of the inner core fixing ring (23) in an interference fit manner.

5. The axial flux motor rotor according to claim 4, characterized in that, The rotor core (2) has a radially extending dovetail groove on the side facing the rotor support (3). The core tie rod (24) is fixed in the dovetail groove to restrict the relative movement of the core body (21), the outer core fixing ring (22), and the inner core fixing ring (23). The rotor core (2) has a radially extending rectangular groove on the side away from the rotor support (3). The rectangular groove corresponds to the pressure plate (6) one by one. The rectangular groove is used for the pressure plate (6) to be assembled to restrict the rotation of the rotor core (2) relative to the rotor support (3).

6. The axial flux motor rotor according to claim 3, characterized in that, The rotor support (3) includes an inner circular support and an outer circular support arranged concentrically, with the outer circular support and the inner circular support spaced apart to form the core groove (31). An outer circular baffle (5) is connected to the outer circular support, and an inner circular baffle (4) is connected to the inner circular support. The outer circular baffle (5) has a first abutting part facing the inner circular baffle (4), and the inner circular baffle (4) has a second abutting part facing the outer circular baffle (5). The first abutting part is used to abut the outer side of the magnet (1), and the second abutting part is used to abut the inner side of the magnet (1) to restrict the movement of the magnet (1) in the radial direction of the rotor support (3).

7. The axial flux motor rotor according to claim 6, characterized in that, The outer circular support is provided with a first stop (32) and a first mounting hole; the outer circular baffle (5) is also provided with a first positioning stop (53) for cooperating with the first stop (32), a first contact surface (52) for contacting the outer circular support, and a second contact surface (51) for contacting the side of the rotor core (2) away from the rotor support (3). The first contact surface (52) is provided with a second mounting hole (54) corresponding to the first mounting hole. The first connecting member passes through the corresponding first mounting hole and second mounting hole (54) so ​​that the outer circular baffle (5) is fixed relative to the outer circular support.

8. The axial flux motor rotor according to claim 6, characterized in that, The inner circular support is provided with a second stop (33) and a third mounting hole; the inner circular baffle (4) is also provided with a second positioning stop (43) for cooperating with the second stop (33), a third contact surface (42) for contacting the inner circular support, and a fourth contact surface (41) for contacting the side of the rotor core (2) away from the rotor support (3). The third contact surface (42) is provided with a fourth mounting hole (44) corresponding to the third mounting hole. The second connector passes through the corresponding third mounting hole and the fourth mounting hole (44) so ​​that the inner circular baffle (4) is fixed relative to the inner circular support.

9. The axial flux motor rotor according to claim 6, characterized in that, The magnets (1) are all fan-shaped structures. Each magnet (1) includes several magnet blocks (11) arranged in a radial direction. The magnet blocks (11) are connected to the support members (13) at both ends of the rotor core (2) in the circumferential direction. The support members (13) also include a third support plate (133) connected to the first support plate (131) and the second support plate (132). The third support plate (133) is located on the side of the magnet blocks (11) facing the second abutment.

10. The axial flux motor rotor according to claim 6, characterized in that, The rotor support (3) has a plurality of ventilation holes (34) which are evenly arranged along the circumference of the rotor support (3) for air to circulate between the inner circumference of the inner circular support and the outer circumference of the outer circular support.

11. An electric motor, characterized in that, Including the axial flux motor rotor as described in any one of claims 1-10.

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