Axial flux motor rotor and axial flux motor

Abstract

The utility model provides an axial magnetic flux motor rotor and an axial magnetic flux motor, the axial magnetic flux motor rotor comprises a rotor iron core and magnetic steel, at least one axial side of the rotor iron core is provided with a plurality of magnetic steel grooves which are circumferentially arranged at intervals; the magnetic steel comprises axial magnetizing magnetic steel and tangential magnetizing magnetic steel which are consistent in size, the axial magnetizing magnetic steel and the tangential magnetizing magnetic steel are alternately arranged in the plurality of magnetic steel grooves which are circumferentially arranged at intervals, and the magnetic steel is fixed in the magnetic steel grooves of the rotor core, so that the structure is more stable, and the rotor core is more compact in structure. And the axial magnetizing magnetic steel and the tangential magnetizing magnetic steel are consistent in size, so that the utilization rate of materials is improved, the use amount of the magnetic steel is reduced, and the cost is further reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of axial flux motors, in particular to an axial flux motor rotor and an axial flux motor. Background Art

[0002] Axial flux motors, also known as disc motors, have the advantages of small axial size, high torque density, high power density and high efficiency, and are widely used in electric vehicles, general industry and other fields. Axial flux motors include stators and rotors. Depending on the number of stators and rotors, axial flux motors are divided into single-stator single-rotor motors, dual-stator single-rotor motors and other motors. Taking the dual-stator single-rotor motor as an example, the rotor is held between the two stators.

[0003] refer to Figure 1 The rotor of the double-stator single-rotor motor includes two layers of upper and lower magnetic steel 100, and a rotor core 500 located in the middle layer. The magnetic steel 100 is fan-shaped and surface-mounted. The magnetic steel 100 is generally die-cast with rare earth permanent magnet materials, and the price of rare earth permanent magnet materials is relatively high. In addition, the centrifugal force caused by the high-speed rotation of the motor will increase the force on the magnetic steel, thus putting forward a strict test on the installation strength of the magnetic steel. Utility Model Content

[0004] The utility model aims to provide an axial flux motor rotor and an axial flux motor which can improve material utilization, reduce magnetic steel usage, and enhance structural strength.

[0005] According to one purpose of the utility model, the utility model provides an axial flux motor rotor, comprising:

[0006] A rotor core, wherein at least one side of the rotor core is provided with a plurality of circumferentially spaced magnetic steel slots;

[0007] The magnetic steel comprises axially magnetized magnetic steel and tangentially magnetized magnetic steel, and the axially magnetized magnetic steel and the tangentially magnetized magnetic steel are alternately arranged in a plurality of circumferentially spaced magnetic steel slots.

[0008] As a preferred embodiment, the rotor core includes a bottom and a tooth portion, and at least one axial side of the bottom is provided with a plurality of circumferentially spaced teeth portions, and the magnetic steel slot is formed between two adjacent teeth portions located on the same axial side of the bottom.

[0009] As a preferred embodiment, the width of the tooth portion gradually increases from the inside to the outside in the radial direction, and the residual magnetism of the tangentially magnetized magnetic steel gradually increases from the inside to the outside in the radial direction.

[0010] As a preferred embodiment, the tooth portion includes a tooth rod portion and a tooth shoulder portion, the tooth rod portion is connected between the bottom portion and the tooth shoulder portion, and the width of the tooth shoulder portion gradually increases in a direction away from the tooth rod portion to form shoulder slopes on both sides of the tooth shoulder portion in a width direction;

[0011] The magnetic steel is circumferentially limited between the tooth rod parts of two adjacent tooth parts. A magnetic steel inclined surface is provided on the magnetic steel, and the magnetic steel inclined surface abuts against the shoulder inclined surface, so that the magnetic steel is axially limited between the shoulder inclined surface and the bottom.

[0012] As a preferred embodiment, the rotor core is formed by winding silicon steel sheets;

[0013] Alternatively, the rotor core is formed by pressing an amorphous material.

[0014] As a preferred embodiment, the cross-sections of the axially magnetized magnetic steel and the tangentially magnetized magnetic steel are rectangular.

[0015] As a preferred embodiment, it also includes:

[0016] An inner ring, the inner ring being arranged radially inward of the rotor core;

[0017] An outer ring, wherein the outer ring is arranged radially outside the rotor core, and the magnetic steel is radially limited between the inner ring and the outer ring;

[0018] The reinforcing ribs penetrate the low magnetic density area of ​​the rotor core and connect the inner ring and the outer ring.

[0019] As a preferred embodiment, magnetic steels are respectively arranged on both axial sides of the rotor core, and the low magnetic density area of ​​the rotor core corresponds to the center position of the magnetic steels.

[0020] As a preferred embodiment, the magnetic steel slots located on both axial sides of the rotor core correspond to each other, and the reinforcing ribs are arranged between the corresponding magnetic steel slots.

[0021] According to another object of the utility model, the utility model provides an axial flux motor, including the axial flux motor rotor of the above embodiment, the axial flux motor also includes at least one stator, and an air gap surface is arranged between the stator and one side of the axial flux motor rotor where the magnetic steel is arranged.

[0022] Compared with the prior art, this technical solution has the following advantages:

[0023] By fixing the magnetic steel in the magnetic steel slot of the rotor core, the structure is made more stable.

[0024] The magnetic steel is divided into axially magnetized magnetic steel and tangentially magnetized magnetic steel, and the axially magnetized magnetic steel and the tangentially magnetized magnetic steel are arranged alternately to realize the Halbach magnetic pole array arrangement, which has the characteristics of better sinusoidality of the motor air gap magnetic density waveform, high magnetic density amplitude, small rotor core thickness, improved torque density, etc.

[0025] The axially magnetized magnetic steel and the tangentially magnetized magnetic steel have the same shape and size, which is beneficial to improving material utilization, reducing the amount of magnetic steel used, and thus reducing costs.

[0026] The present invention is further described below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic diagram of the structure of an existing rotor;

[0028] Figure 2 This is an exploded view of the rotor of the axial flux motor of the utility model;

[0029] Figure 3 It is a schematic diagram of the magnetic field flow direction of the rotor of the axial flux motor of the utility model;

[0030] Figure 4 It is a structural schematic diagram of the rotor core of the utility model;

[0031] Figure 5 It is a schematic diagram of the forming of the rotor core of the utility model;

[0032] Figure 6 It is a schematic diagram of the structure of the magnetic steel of the utility model;

[0033] Figure 7 It is a structural schematic diagram of the outer ring of the utility model;

[0034] Figure 8 It is a structural schematic diagram of the inner ring of the utility model;

[0035] Fig. 9 It is a structural schematic diagram of the upper plate of the utility model;

[0036] Fig.10 It is a structural schematic diagram of the lower plate of the utility model;

[0037] Fig.11 It is a schematic structural diagram of the reinforcing rib described in the utility model.

[0038] In the figure: 100 magnetic steel, 100a magnetic steel inclined surface, 110 axially magnetized magnetic steel, 120 tangentially magnetized magnetic steel, 300 inner ring, 310 inner perforation, 400 outer ring, 410 outer perforation, 500 rotor core, 500a low magnetic density area, 500b high magnetic density area, 500c silicon steel sheet, 510 magnetic steel groove, 510c groove portion, 520 core perforation, 520c through-hole portion, 530 tooth portion, 531 tooth rod portion, 532 tooth shoulder portion, 532a shoulder inclined surface, 540 bottom, 600 reinforcing rib, 610 rod portion, 620 outer limiting portion, 630 inner limiting portion, 700 fixed plate, 710 upper plate, 711a block, 720 lower plate, 721a lower accommodating groove, 800 bolts. DETAILED DESCRIPTION

[0039] The following description is used to disclose the utility model so that those skilled in the art can implement the utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the utility model defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the utility model.

[0040] First embodiment

[0041] like Figure 2 and Figure 3 As shown, the axial flux motor rotor comprises:

[0042] A rotor core 500, wherein at least one side of the rotor core 500 is provided with a plurality of circumferentially spaced magnetic steel slots 510;

[0043] The magnetic steel 100 includes an axially magnetized magnetic steel 110 and a tangentially magnetized magnetic steel 120 . The axially magnetized magnetic steel 110 and the tangentially magnetized magnetic steel 120 are alternately arranged in a plurality of circumferentially spaced magnetic steel slots 510 .

[0044] The structure is made more stable by fixing the magnetic steel 100 in the magnetic steel slot 510 of the rotor core 500. At the same time, the magnetic steel 100 is divided into axial magnetized magnetic steel 110 and tangential magnetized magnetic steel 120, and the axial magnetized magnetic steel 110 and the tangential magnetized magnetic steel 120 are alternately arranged to realize the Halbach magnetic pole array arrangement, which has the characteristics of better sinusoidality of the motor air gap magnetic density waveform, high magnetic density amplitude, small rotor core thickness, and improved torque density. In addition, the axial magnetized magnetic steel 110 and the tangential magnetized magnetic steel 120 have the same shape and size, which is conducive to improving material utilization, reducing the amount of magnetic steel used, and thus reducing costs.

[0045] like Figure 3As shown, the magnetizing direction of the axial magnetized magnetic steel 110 is axial, and can be divided into upward or downward, and the magnetizing direction of the tangential magnetized magnetic steel 120 is tangential, and can be divided into left or right. For details, please refer to Figure 3 , thereby realizing the Halbach magnetic pole array arrangement.

[0046] like Figure 4 As shown, the rotor core 500 includes a bottom 540 and a tooth portion 530, and at least one side of the axial direction of the bottom 540 is provided with a plurality of circumferentially spaced tooth portions 530, and the magnetic steel slot 510 is formed between two adjacent tooth portions 530 located on the same axial side of the bottom 540.

[0047] The bottom 540 is disc-shaped, and the width of the tooth portion 530 gradually increases from the inside to the outside in the radial direction, so that the magnetic steel slot 510 formed between two adjacent tooth portions 530 has a rectangular cross section. Figure 4 and Figure 6 The shapes of the magnetic steel 100 and the magnetic steel slot 510 are adapted to each other, that is, the axially magnetized magnetic steel 110 and the tangentially magnetized magnetic steel 120 have the same shape and a rectangular cross section. The rectangular magnetic steel is easy to process, further improving the material utilization rate.

[0048] The magnetic steel 100 can be formed by die-casting magnetic materials or by stacking silicon steel sheets. Since the cross section of the magnetic steel 100 is rectangular, that is, the magnetic steel 100 is formed by stacking silicon steel sheets of the same shape, compared with stacking silicon steel sheets of different sizes in a gradually larger size to form a fan-shaped magnetic steel, it can fully utilize the raw materials and avoid waste.

[0049] refer to Figure 4 and Figure 6 The tooth portion 530 includes a tooth rod portion 531 and a tooth shoulder portion 532, wherein the tooth rod portion 531 is connected between the bottom portion 540 and the tooth shoulder portion 532, and the width of the tooth shoulder portion 532 gradually increases in a direction away from the tooth rod portion 531, so as to form shoulder slopes 532a on both sides of the tooth shoulder portion 532 in a width direction;

[0050] The magnetic steel 100 is circumferentially limited between the tooth rod portions 531 of two adjacent tooth portions 530 . A magnetic steel inclined surface 100 a is provided on the magnetic steel 100 . The magnetic steel inclined surface 100 a abuts against the shoulder inclined surface 532 a , so that the magnetic steel 100 is axially limited between the shoulder inclined surface 532 a and the bottom 540 .

[0051] The tooth shoulder 532 is in an inverted trapezoidal shape, and the width sides of the tooth shoulder 532 are pressed toward two adjacent magnetic steels 100 respectively, and the shoulder inclined surface 532a abuts against the magnetic steel inclined surface 100a of the magnetic steel 100, so that the magnetic steel 100 is axially limited by the cooperation of the shoulder inclined surface 532a of the tooth shoulder 532 and the bottom 540.

[0052] The magnetic steel slot 510 penetrates the rotor core 500 in the radial direction, that is, the magnetic steel 100 can be inserted into the magnetic steel slot 510 in the radial direction.

[0053] The width of the tooth portion 530 increases radially from the inside to the outside, that is, the width of the tooth portion 530 is narrower near the radial inside and is easy to saturate. For this reason, the tangential magnetized magnetic steel 120 can use a magnetic steel with low remanence, and the remanence of the entire tangential magnetized magnetic steel 120 gradually increases radially from the inside to the outside, which can further reduce the cost of the magnetic steel. Remanence refers to the magnetism that still exists in a magnetic field or electromagnetic system after the external magnetic field or current excitation is removed.

[0054] refer to Figure 3 and Figure 6 The magnetic steel 100 includes a magnetic steel top surface 1001, a magnetic steel bottom surface 1002, a magnetic steel left side surface 1003 and a magnetic steel right side surface 1004. The magnetic steel bottom surface 1002 is used to connect to the bottom 540 of the rotor core 500, the magnetic steel top surface 1001 is used to face the stator, and the magnetic steel left side surface 1003 and the magnetic steel right side surface 1004 are respectively used to connect the teeth 530 on the left and right sides of the magnetic steel 100. The magnetic steel inclined surface 100a is arranged between the magnetic steel top surface 1001 and the magnetic steel left side surface 1003 and the magnetic steel right side surface 1004.

[0055] The magnetic steel top surface 1001 and the magnetic steel bottom surface 1002 are opposite and parallel, and the magnetization direction of the axially magnetized magnetic steel 110 is along the vertical direction of the magnetic steel top surface 1001, and the direction can be from the magnetic steel top surface 1001 to the magnetic steel bottom surface 1002, or from the magnetic steel bottom surface 1002 to the magnetic steel top surface 1001.

[0056] Since the magnetic steel 100 is rectangular, the left side surface 1003 of the magnetic steel and the right side surface 1004 of the magnetic steel are opposite and parallel, and the magnetizing direction of the tangentially magnetized magnetic steel 120 is the vertical direction of the left side surface 1003 of the magnetic steel, and the direction can be the direction from the left side surface 1003 of the magnetic steel to the right side surface 1004 of the magnetic steel, or the direction from the right side surface 1004 of the magnetic steel to the left side surface 1003 of the magnetic steel.

[0057] like Figure 4 and Figure 5As shown, the rotor core 500 can be formed by winding silicon steel sheets 500c to reduce eddy current loss. The through hole portion 520c of the core through hole 520 and the slot portion 510c of the magnetic steel slot 510 can be firstly punched out of the silicon steel sheet 500c, and the through hole portion 520c is located in the middle of the width of the silicon steel sheet 500c, and the slot portions 510c are respectively arranged on both sides of the width of the silicon steel sheet 500c, and then the silicon steel sheet 500c is wound to form the rotor core 500, so that the through hole portions 520c on each layer of the silicon steel sheet 500c and located on the same straight line form the core through hole 520, and the slot portions 510c located on the same straight line form the magnetic steel slot 510. The shape of the magnetic steel slot 510 can also be made into the desired shape according to electromagnetic needs, and different processing methods can be used, such as winding first and then cutting to form the magnetic steel slot 510. In addition, the rotor core 500 is formed by pressing an amorphous material, and the amorphous material includes a soft magnetic material.

[0058] like Figure 2 , Figure 7 and Figure 8 As shown, the axial flux motor rotor also includes:

[0059] An inner ring 300, wherein the inner ring 300 is arranged radially inward of the rotor core 500;

[0060] An outer ring 400, wherein the outer ring 400 is arranged radially outside the rotor core 500, and the magnetic steel 100 is radially limited between the inner ring 300 and the outer ring 400;

[0061] The reinforcing rib 600 is passed through the core through hole 520 of the low magnetic density area 500 a in the rotor core 500 and connects the inner ring 300 and the outer ring 400 .

[0062] By arranging the reinforcing ribs 600 in the low magnetic density area 500a, not only the structural strength of the rotor core 500 is improved, but also eddy current loss will not occur when the reinforcing ribs 600 are made of metal. The magnetic steel 100 is radially limited by the inner ring 300 and the outer ring 400 to prevent the magnetic steel 100 from being separated under high-speed rotation, thereby ensuring the reliability of the structure. The inner ring 300, the outer ring 400 and the rotor core 500 can be fixed by the reinforcing ribs 600, thereby increasing the use function of the reinforcing ribs 600.

[0063] When the rotor core 500 is provided with the magnetic steel 100 only on one axial side, and an air gap surface is formed between the magnetic steel 100 on this side and the stator, and an axial flux motor with a single stator and a single rotor is formed, the axial side of the rotor core 500 where the magnetic steel 100 is provided forms a magnetic circuit, and the other side of the rotor core 500 away from the magnetic steel 100 is a low magnetic flux density area 500a. When the magnetic steel 100 is provided on both axial sides of the rotor core 500, a dual-stator single-rotor axial flux motor is formed, and a low magnetic flux density area 500a is formed in the middle axial position of the rotor core 500.

[0064] refer to Figure 3 The low magnetic flux density zone 500a of the rotor core 500 corresponds to the center position of the magnetic steel 100. Specifically, the low magnetic flux density zone 500a is located in the middle position of the axial direction of the rotor core 500 and corresponds to the center of the axially magnetized magnetic steel 110. The magnetic flux density of the low magnetic flux density zone 500a of the rotor core 500 is 0 to 0.8T.

[0065] The high magnetic flux density area 500 b of the rotor core 500 corresponds to a position between the axial magnetization magnetic steel 110 and the tangential magnetization magnetic steel 120 , and the magnetic flux density of the high magnetic flux density area 500 b of the rotor core 500 is 1.8-2.5T.

[0066] The magnetic flux density is the number of magnetic lines of force that pass vertically through a unit area.

[0067] like Figure 2 and Figure 4 As shown, the magnetic steel slots 510 located on both sides of the rotor core 500 correspond to each other, and the reinforcing ribs 600 are arranged between the corresponding magnetic steel slots 510. After the reinforcing ribs 600 are inserted into the core through holes 520, the magnetic steel slots 510 are opened on both sides of the rotor core 500 in the axial direction, and the structural strength can be ensured.

[0068] refer to Figure 2 , Figure 7 and Figure 8 The inner ring 300 and the outer ring 400 can be made of steel to improve the structural strength. The height of the inner ring 300 and the outer ring 400 are equal, and are equal to the sum of the heights of the rotor core 500 and the upper and lower layers of the magnetic steel 100, ensuring the radial limiting ability of the inner ring 300 and the outer ring 400 to the magnetic steel 100.

[0069] refer to Figure 7 and Figure 8, the inner ring 300 is provided with an inner through hole 310, the outer ring 400 is provided with an outer through hole 410, and the inner through hole 310 and the outer through hole 410 are used for the reinforcing rib 600 to pass through. It can be seen that the cross-sectional shapes of the core through hole 520 of the rotor core 500, the inner through hole 310 of the inner ring 300, the outer through hole 410 of the outer ring 400, and the rod 610 of the reinforcing rib 600 are adapted to each other, for example, in a square or circular shape, and the size, shape, and size can be designed according to electromagnetic simulation and structural strength.

[0070] like Figure 2 , Figures 9 and 10 As shown, the axial magnetic field motor rotor also includes:

[0071] The fixed plate 700 is supported on the inner wall of the inner ring 300 . The fixed plate 700 includes an upper plate 710 and a lower plate 720 . The reinforcing rib 600 is clamped between the upper plate 710 and the lower plate 720 .

[0072] The fixing plate 700 can not only fix the reinforcing rib 600 , but also enhance the supporting force to the inner ring 300 , thereby further ensuring the structural strength.

[0073] refer to Fig.11 , the reinforcing rib 600 comprises:

[0074] The outer limit portion 620,

[0075] Inner limit portion 630;

[0076] The rod portion 610 has the outer limiting portion 620 and the inner limiting portion 630 respectively disposed at both ends of the rod portion 610. The rod portion 610 passes through the outer ring 400, the low magnetic density area 500a of the rotor core 500 and the inner ring 300. The outer limiting portion 620 abuts against the outer wall of the outer ring 400, and the inner limiting portion 630 is clamped with the fixed disk 700.

[0077] The outer limiting portion 620 is configured as an arc-shaped plate and abuts against the outer wall of the outer ring 400 , and the inner limiting portion 630 is configured as a slot, which is opened on the rod portion 610 and is engaged with the fixing plate 700 to fix the reinforcing rib 600 .

[0078] Specifically, a lower accommodating groove 721a is provided on the upper side surface of the lower plate 720; a clamping block 711a is provided on the lower side surface of the upper plate 710, and the clamping block 711a corresponds to the lower accommodating groove 721a one by one; after the lower plate 720 and the upper plate 710 are abutted and the reinforcing rib 600 is clamped, the rod portion 610 of the reinforcing rib 600 is located in the lower accommodating groove 721a, and the inner limit portion 630 of the reinforcing rib 600 is clamped with the clamping block 711a.

[0079] The lower receiving groove 721a passes through the outer edge of the lower plate 720. When the upper plate 710 and the lower plate 720 are axially spliced, the clamping block 711a can fall into the lower receiving groove 721a, so that the clamping block 711a can be clamped with the reinforcing rib 600 located in the lower receiving groove 721a, that is, the clamping block 711a is clamped with the clamping groove of the rod 610. Afterwards, the upper plate 710 and the lower plate 720 can be fixed by bolts 800, etc., which is convenient and quick to fix.

[0080] refer to Figure 2 , Fig. 9 and Fig.10 The number of the reinforcing ribs 600 and the bolts 800 are both multiple, and can be selected based on factors such as structural strength. The bolts 800 fixed between the upper plate 710 and the lower plate 720 are staggered with the lower receiving groove 721a.

[0081] When assembling the axial flux motor rotor, the magnetic steel 100 can be first arranged on both axial sides of the rotor core 500, and then the inner ring 300 and the outer ring 400 can be arranged on the radial inner and outer sides of the rotor core 500, so that the magnetic steel 100 is radially limited between the inner ring 300 and the outer ring 400, and then the reinforcing rib 600 is passed through the outer ring 400 and the rotor core 500 in sequence until the tail of the reinforcing rib 600 passes through the inner ring 300, and then the tail of the reinforcing rib 600 is clamped and fixed by the upper plate 710 and the lower plate 720 of the fixing plate 700 to complete the assembly of the axial flux motor rotor.

[0082] Second embodiment

[0083] refer to Figure 2 The axial flux motor includes the axial flux motor rotor of the above embodiment, and the axial flux motor also includes at least one stator, and an air gap surface is arranged between the stator and the axial flux motor rotor on one side of the magnetic steel 100.

[0084] When the rotor core 500 is provided with the magnetic steel 100 only on one axial side, the number of the stators is also one, forming a single-stator single-rotor axial flux motor. When the rotor core 500 is provided with magnetic steel on both axial sides, the number of the stators is two, forming the dual-stator single-rotor axial flux motor.

[0085] In summary, the structure is made more stable by fixing the magnetic steel 100 in the magnetic steel slot 510 of the rotor core 500. At the same time, the magnetic steel 100 is divided into axial magnetized magnetic steel 110 and tangential magnetized magnetic steel 120, and the axial magnetized magnetic steel 110 and the tangential magnetized magnetic steel 120 are alternately arranged to realize the Halbach magnetic pole array arrangement, which has the characteristics of better sinusoidality of the motor air gap magnetic density waveform, high magnetic density amplitude, small rotor core thickness, and improved torque density. In addition, the axial magnetized magnetic steel 110 and the tangential magnetized magnetic steel 120 have the same shape and size, which is conducive to improving material utilization, reducing the amount of magnetic steel used, and thus reducing costs.

[0086] The embodiments described above are only used to illustrate the technical ideas and features of the utility model, and their purpose is to enable technicians in this field to understand the content of the utility model and implement it accordingly. The patent application scope of the utility model cannot be limited only by this embodiment, that is, any equivalent changes or modifications made according to the spirit disclosed by the utility model still fall within the patent scope of the utility model.

Claims

1. An axial flux motor rotor, characterized in that: include: A rotor core (500), wherein at least one side of the rotor core (500) is provided with a plurality of circumferentially spaced magnetic steel slots (510); A magnetic steel (100), wherein the magnetic steel (100) comprises axially magnetized magnetic steel (110) and tangentially magnetized magnetic steel (120), wherein the axially magnetized magnetic steel (110) and the tangentially magnetized magnetic steel (120) are alternately arranged in a plurality of circumferentially spaced magnetic steel slots (510).

2. The axial flux motor rotor according to claim 1, characterized in that: The rotor core (500) comprises a bottom (540) and a tooth portion (530), wherein at least one axial side of the bottom (540) is provided with a plurality of circumferentially spaced tooth portions (530), and the magnetic steel slot (510) is formed between two adjacent tooth portions (530) located on the same axial side of the bottom (540).

3. The axial flux motor rotor according to claim 2, characterized in that: The tooth portion (530) comprises a tooth rod portion (531) and a tooth shoulder portion (532), wherein the tooth rod portion (531) is connected between the bottom portion (540) and the tooth shoulder portion (532), and the width of the tooth shoulder portion (532) gradually increases in a direction away from the tooth rod portion (531), so as to form shoulder slopes (532a) on both sides of the tooth shoulder portion (532) in a width direction; The magnetic steel (100) is circumferentially limited between the tooth rod portions (531) of two adjacent tooth portions (530); a magnetic steel inclined surface (100a) is provided on the magnetic steel (100); the magnetic steel inclined surface (100a) and the shoulder inclined surface (532a) are in contact with each other, so that the magnetic steel (100) is axially limited between the shoulder inclined surface (532a) and the bottom (540).

4. The axial flux motor rotor according to claim 2, characterized in that: The width of the tooth portion (530) gradually increases from the inside to the outside in the radial direction, and the residual magnetism of the tangentially magnetized magnetic steel (120) gradually increases from the inside to the outside in the radial direction.

5. The axial flux motor rotor according to claim 1, characterized in that: The rotor core (500) is formed by winding silicon steel sheets; Alternatively, the rotor core (500) is formed by pressing an amorphous material.

6. The axial flux motor rotor according to claim 1, characterized in that: The cross sections of the axial magnetized magnetic steel (110) and the tangential magnetized magnetic steel (120) are rectangular.

7. The axial flux motor rotor according to claim 1, characterized in that: Also includes: An inner ring (300), the inner ring (300) being arranged radially inward of the rotor core (500); an outer ring (400), the outer ring (400) being arranged radially outside the rotor core (500), the magnetic steel (100) being radially limited between the inner ring (300) and the outer ring (400); A reinforcing rib (600) is provided through a low magnetic flux density region (500a) of the rotor core (500) and connects the inner ring (300) and the outer ring (400).

8. The axial flux motor rotor according to claim 7, characterized in that: Magnetic steels (100) are respectively arranged on both axial sides of the rotor core (500), and the low magnetic density region (500a) of the rotor core (500) corresponds to the central position of the magnetic steel (100).

9. The axial flux motor rotor according to claim 7, characterized in that: The magnetic steel slots (510) located on both axial sides of the rotor core (500) correspond to each other one by one, and the reinforcing ribs (600) are arranged between the corresponding magnetic steel slots (510).

10. An axial flux motor, characterized in that: The axial flux motor comprises the rotor according to any one of claims 1 to 9, wherein the axial flux motor further comprises at least one stator, and an air gap surface is arranged between the stator and a side of the axial flux motor rotor on which the magnetic steel (100) is arranged.

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