Rotor, electric machine and vehicle

Abstract

The application relates to a rotor, a motor and a vehicle, which are characterized in that a first magnetic part is arranged between two adjacent rotor teeth, a second magnetic part is arranged on the side of the rotor tooth away from the rotor disc, an air gap is formed between the axial side of the rotor disc provided with the first magnetic part and the stator, the second magnetic part is used as an auxiliary magnetic part, the second magnetic part can be closer to the air gap position during use of the rotor, the arrangement of the second magnetic part can enhance the air gap magnetic field strength, the magnetic field is more uniform, the magnetic hysteresis loss is reduced, and the arrangement of the second magnetic part can also reduce torque pulsation and harmonics.

Description

Technical Field

[0001] This application relates to the field of electronic technology, and more particularly to a rotor, motor and vehicle. Background Technology

[0002] The electric motor plays a crucial role in vehicle operation. It typically consists of a stator and a rotor. The rotor comprises a rotor body and magnets. The magnets are positioned on the surface of the rotor body and arranged circumferentially between the rotor teeth. During operation, a magnetic field is generated between the stator and rotor, causing the rotor to rotate at high speed. However, the current arrangement of magnets in the rotor can lead to hysteresis, increasing rotor heat and reducing motor efficiency. Utility Model Content

[0003] This application provides a rotor, motor, and vehicle that improves the hysteresis phenomenon of the rotor, thereby at least partially solving the above-mentioned technical problems.

[0004] To achieve the above objectives, according to a first aspect of this application, a rotor is provided, comprising:

[0005] Rotor disk;

[0006] Multiple rotor teeth are connected to the rotor disk, the rotor teeth are located on one side of the rotor disk along the axial direction, and the multiple rotor teeth are arranged along the circumference of the rotor disk;

[0007] The first magnetic element is disposed between two adjacent rotor teeth;

[0008] The second magnetic element is disposed on the side of the rotor teeth away from the rotor disk.

[0009] Optionally, a first mounting groove is provided on the side of the rotor teeth away from the rotor disk, and the second magnetic element is at least partially located in the first mounting groove.

[0010] Optionally, the side wall of the first mounting groove is provided with a first limiting part, and the second magnetic element is provided with a second limiting part. The second limiting part is used to cooperate with the first limiting part to limit the position of the second magnetic element in the rotor axis.

[0011] Optionally, the cross-sectional area of ​​the first mounting groove perpendicular to the rotor axis increases in the direction close to the rotor disk.

[0012] Optionally, the cross-sectional area of ​​the second magnetic element perpendicular to the rotor axis increases in the direction close to the rotor disk.

[0013] Optionally, the first mounting groove extends radially along the rotor and penetrates at least one side of the rotor teeth.

[0014] Optionally, the rotor teeth are detachably connected to the rotor disk.

[0015] Optionally, the rotor disk has a plurality of second mounting slots, and the rotor teeth are correspondingly arranged in the second mounting slots.

[0016] Optionally, a limiting groove is formed in one of the sidewalls of the second mounting groove and the sidewall of the rotor tooth, and a third limiting part is protruded in the other of the sidewalls of the second mounting groove and the sidewall of the rotor tooth. The third limiting part is used to cooperate with the limiting groove to limit the position of the rotor tooth in the rotor axis.

[0017] Optionally, the second mounting groove extends radially along the rotor and penetrates at least one side of the rotor disk.

[0018] Optionally, the rotor teeth are provided with a fourth limiting part, and the first magnetic element is provided with a fifth limiting part. The fifth limiting part is used to cooperate with the fourth limiting part to limit the position of the first magnetic element in the rotor axis.

[0019] Optionally, the fourth limiting part protrudes from the side surface of the rotor teeth, and the fifth limiting part protrudes from the side surface of the first magnetic element; along the axial direction of the rotor, the side of the fifth limiting part away from the rotor disk abuts against the side of the fourth limiting part facing the rotor disk.

[0020] Optionally, a first gap is provided between the fourth limiting portion and the fifth limiting portion in the circumferential direction of the rotor, the first gap extending radially along the rotor and penetrating the rotor.

[0021] Optionally, the side of the fourth limiting part facing the rotor disk includes a first abutting surface and a first transition surface that are connected to each other, and the side of the fifth limiting part facing the rotor teeth includes a second abutting surface and a second transition surface that are connected to each other.

[0022] Wherein, the first abutting surface abuts against the second abutting surface, and the first transition surface, the second transition surface, the side surface of the rotor teeth, and the side of the rotor disk facing the first magnetic element enclose and form the first gap.

[0023] Optionally, a first gap exists between the first magnetic element and the rotor teeth in the circumferential direction of the rotor.

[0024] Optionally, a second gap exists between the second magnetic element and the sidewall of the first mounting groove in the circumferential direction of the rotor.

[0025] Optionally, the rotor teeth may be made of oriented silicon steel or sheet molding compound.

[0026] According to a second aspect of this application, an electric motor is provided, comprising the rotor described in any one of the foregoing claims.

[0027] According to a third aspect of this application, a vehicle is also provided, including the motor described above.

[0028] In the rotor of this application embodiment, a first magnetic element is provided between two adjacent rotor teeth, and a second magnetic element is provided on the side of the rotor teeth away from the rotor disk. An air gap is formed between the rotor disk with the first magnetic element on one axial side and the stator. The second magnetic element is used as an auxiliary magnetic element so that it can be closer to the air gap during rotor use. This enhances the air gap magnetic field strength, makes the magnetic field more uniform, and reduces hysteresis loss. At the same time, the second magnetic element can also reduce torque pulsation and harmonics.

[0029] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0032] Figure 1 This is a schematic diagram of the structure of the first type of rotor provided in the embodiments of this application;

[0033] Figure 2 This is provided by the embodiments of this application. Figure 1 Enlarged structural diagram of region A in the middle;

[0034] Figure 3 This is a schematic diagram of the structure of a rotor disk provided in an embodiment of this application;

[0035] Figure 4 This is a schematic diagram of the structure of the first type of rotor tooth provided in the embodiments of this application;

[0036] Figure 5 This is a schematic diagram of the structure of a first magnetic element provided in an embodiment of this application;

[0037] Figure 6 This is a schematic diagram of the structure of the first type of second magnetic component provided in the embodiments of this application;

[0038] Figure 7 This is a schematic diagram of the structure of the second type of rotor provided in the embodiments of this application;

[0039] Figure 8 This is provided by the embodiments of this application. Figure 7 A magnified structural diagram of region B in the middle;

[0040] Figure 9 This is a schematic diagram of the structure of the second type of rotor tooth provided in the embodiments of this application;

[0041] Figure 10 This is a schematic diagram of the structure of the second type of magnetic component provided in the embodiments of this application.

[0042] Explanation of reference numerals in the attached figures:

[0043] 1. Rotor; 11. Rotor disk; 111. Second mounting groove; 112. Limiting groove; 12. Rotor tooth; 121. First mounting groove; 122. First limiting part; 123. Third limiting part; 124. Fourth limiting part; 1241. First abutting surface; 1242. First transition surface; 13. First magnetic element; 131. Fifth limiting part; 1311. Second abutting surface; 1312. Second transition surface; 14. Second magnetic element; 141. Second limiting part; 15. First gap; X, radial; Y, axial; Z, circumferential. Detailed Implementation

[0044] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0045] This application provides a rotor; please refer to [link / reference]. Figures 1 to 6 The rotor 1 includes a rotor disk 11 and multiple rotor teeth 12. The rotor teeth 12 are connected to the rotor disk 11 and are located on one side of the rotor disk 11 along the axial direction Y. The multiple rotor teeth 12 are arranged along the circumferential direction Z of the rotor disk 11. That is, the rotor disk 11 is annular, and the multiple rotor teeth 12 are distributed at intervals along the circumferential direction Z of the rotor disk 11 on the surface of the rotor disk 11 and are connected to the rotor disk 11. When the rotor 1 is applied to the motor, the side of the rotor teeth 12 facing away from the rotor disk 11 is directed towards the stator of the motor and has a certain air gap with the stator. During the operation of the motor, a magnetic field is generated between the rotor 1 and the stator to drive the rotor 1 to rotate.

[0046] The rotor 1 includes a first magnetic element 13, which is disposed between two adjacent rotor teeth 12. When multiple rotor teeth 12 are spaced apart, a mounting groove is formed between two adjacent rotor teeth 12, and the first magnetic element 13 is disposed within the mounting groove. This allows the rotor teeth 12 to provide a certain positioning function for the first magnetic element 13. When the rotor 1 is applied to a motor, it magnetizes the first magnetic element 13 during operation, creating a magnetic field around the first magnetic element 13 to drive the rotor 1 to rotate. By adjusting the structure and magnetization method of the first magnetic element 13, the magnetic field around it can be adjusted to meet different application requirements of the rotor 1.

[0047] The rotor 1 also includes a second magnetic element 14, which is located on the side of the rotor teeth 12 facing away from the rotor disk 11. That is, when the rotor 1 is used in the motor, the second magnetic element 14 is located on the side of the rotor teeth 12 facing the stator in the motor, and an air gap is formed between the rotor disk 11 with the first magnetic element 13 on one axial side and the stator. During the operation of the rotor 1, the second magnetic element 14 is also magnetized. Because the second magnetic element 14 is close to the motor stator, its placement enhances the magnetic field strength in the air gap between the rotor 1 and the stator, making the magnetic field more uniform. This helps reduce the hysteresis loss of the rotor 1 and the heat generated during operation. Simultaneously, the placement of the second magnetic element 14 also reduces torque pulsation and harmonics, thereby improving motor efficiency.

[0048] It should be noted that the second magnetic element 14 is smaller in size than the first magnetic element 13. That is, the second magnetic element 14 serves as an auxiliary magnetic element for the rotor 1, used to regulate the magnetic field around the rotor 1. By adding the second magnetic element 14 to the side of the rotor teeth 12 away from the rotor disk 11, when adjustments to the magnetic structure of the rotor 1 are needed to change the magnetic field around the rotor 1, only the structure of the smaller second magnetic element 14 needs to be adjusted, while the structure of the first magnetic element 13 remains unchanged. This arrangement allows the first magnetic element 13 to use a universal magnetic structure and to be adapted to different application scenarios at a lower cost, thereby improving the applicability of the rotor 1 and reducing its production cost.

[0049] In some embodiments, please refer to Figure 2 and Figure 4A first mounting groove 121 is formed on the side of the rotor tooth 12 opposite to the rotor disk 11, and the second magnetic element 14 is at least partially located in the first mounting groove 121. By forming the first mounting groove 121 on the rotor tooth 12, the installation of the second magnetic element 14 can be positioned, making the distribution of the second magnetic element 14 on the multiple rotor teeth 12 more uniform. At the same time, the installation of the second magnetic element 14 can also be limited, making the setting of the second magnetic element 14 on the multiple rotor teeth 12 more stable, thereby improving the overall structural stability of the rotor 1.

[0050] In some embodiments, please refer to Figures 7 to 9 The first mounting groove 121 has a first limiting part 122 on its side wall, and the second magnetic element 14 has a second limiting part 141. The second limiting part 141 cooperates with the first limiting part 122 to limit the position of the second magnetic element 14 in the axial direction Y of the rotor 1. By utilizing the cooperation of the first limiting part 122 and the second limiting part 141, the stability of the second magnetic element 14 in the first mounting groove 121 can be improved, reducing the risk of the second magnetic element 14 disengaging from the rotor teeth 12 during the rotation of the rotor 1, thereby improving the overall structural stability of the rotor 1.

[0051] The first limiting part 122 protrudes from the side wall of the first mounting groove 121, and the second limiting part 141 protrudes from the side surface of the second magnetic element 14. Along the axial direction Y of the rotor 1, the side of the first limiting part 122 facing the rotor disk 11 abuts against the side of the second limiting part 141 away from the rotor disk 11. That is, along the axial direction Y of the rotor 1, the second magnetic element 14 is integrally pressed into the first mounting groove 121 to improve the stability of the second magnetic element 14 within the first mounting groove 121, reduce the risk of the second magnetic element 14 disengaging from the rotor teeth 12 during rotor 1 rotation, and thus improve the overall structural stability of the rotor 1.

[0052] It should be noted that the first limiting part 122 and the second limiting part 141 can also be a groove structure and a protruding structure, respectively. That is, the first limiting part 122 is a groove structure formed in the side wall of the first mounting groove 121, and the second limiting part 141 protrudes from the side surface of the second magnetic element 14; or the second limiting part 141 is a groove structure formed in the side surface of the second magnetic element 14, and the first limiting part 122 protrudes from the side wall of the first mounting groove 121. By embedding the protruding structure into the groove structure, the position of the second magnetic element 14 in the axial Y direction of the rotor 1 can also be limited.

[0053] It should be noted that when the first magnetic component 13 and the second magnetic component 14 are installed onto the rotor disk 11 and the rotor teeth 12, an adhesive layer is applied between the first magnetic component 13 and the rotor disk 11 and between the second magnetic component 14 and the rotor teeth 12 to ensure that the first magnetic component 13 and the second magnetic component 14 have sufficient installation stability.

[0054] In some embodiments, the cross-sectional area of ​​the first mounting groove 121 in the direction perpendicular to the rotor 1 axial direction Y increases towards the rotor disk 11. That is, the opening area of ​​the first mounting groove 121 decreases away from the rotor disk 11, so as to limit the second magnetic element 14 by the sidewall of the first mounting groove 121, improve the stability of the second magnetic element 14 in the first mounting groove 121, reduce the risk of the second magnetic element 14 disengaging from the rotor teeth 12 during the rotation of the rotor 1, and thus improve the overall structural stability of the rotor 1.

[0055] The statement that the cross-sectional area of ​​the first mounting groove 121 in the direction perpendicular to the rotor 1 axis Y increases towards the rotor disk 11 means that the cross-sectional area of ​​the first mounting groove 121 in the direction perpendicular to the rotor 1 axis Y increases entirely towards the rotor disk 11, or only partially in the direction towards the rotor disk 11. In other words, the sidewall of the first mounting groove 121 can gradually narrow inwards in the direction away from the rotor disk 11, or only in the portion away from the rotor disk 11, to limit the second magnetic component 14 and improve the stability of the second magnetic component 14 within the first mounting groove 121.

[0056] For the corresponding information, please refer to [link / reference]. Figure 8 and Figure 10 The cross-sectional area of ​​the second magnetic element 14 in the direction perpendicular to the rotor 1 axis Y increases along the direction close to the rotor disk 11. That is, the structure of the second magnetic element 14 matches the second mounting groove 111 to further improve the stability of the second magnetic element 14 in the first mounting groove 121, reduce the risk of the second magnetic element 14 disengaging from the rotor teeth 12 during the rotation of the rotor 1, and thus improve the overall structural stability of the rotor 1.

[0057] The statement that the cross-sectional area of ​​the second magnetic element 14 in the direction perpendicular to the rotor 1 axis Y increases towards the rotor disk 11 means that the cross-sectional area of ​​the second magnetic element 14 in the direction perpendicular to the rotor 1 axis Y increases entirely towards the rotor disk 11, or only partially towards the rotor disk 11. In other words, the sidewall of the second magnetic element 14 can generally exhibit a gradually expanding outward trend in the direction towards the rotor disk 11, or only in the portion away from the rotor disk 11, so that the structure of the second magnetic element 14 matches the second mounting groove 111, thereby improving the stability of the second magnetic element 14 within the first mounting groove 121.

[0058] In some examples, the first mounting groove 121 extends radially X along the rotor 1 and passes through at least one side of the rotor tooth 12. That is, when installing the second magnetic component 14, the second magnetic component 14 can be inserted into the rotor tooth 12 from one side of the rotor tooth 12 radially X along the rotor 1. This structural design makes the assembly of the second magnetic component 14 and the rotor tooth 12 simpler and more convenient. It also makes it easier to adjust the structural shape of the second magnetic component 14 and the first mounting groove 121 according to the requirements. It is only necessary to match the second magnetic component 14 with the first mounting groove 121 to ensure the installation stability of the second magnetic component 14.

[0059] It should be noted that the radial direction X of rotor 1 refers to the direction of the plane perpendicular to the axial direction Y of rotor 1, that is, the direction corresponding to each diameter of rotor 1 is the radial direction X of rotor 1.

[0060] In some embodiments, the rotor teeth 12 are detachably connected to the rotor disk 11. Since the rotor teeth 12 simultaneously cooperate with the first magnetic element 13 and the second magnetic element 14, and the structures of the first magnetic element 13 and the second magnetic element 14 directly affect the distribution of the magnetic field of the rotor 1, when the structures of the first magnetic element 13 and the second magnetic element 14 change according to the magnetic field requirements, only the structure of the rotor teeth 12 can be adjusted to adapt to the first magnetic element 13 and the second magnetic element 14 with different structures, while the structure of the rotor disk 11 can remain unchanged, thereby helping to improve the adaptability of the rotor 1 and reduce the manufacturing cost of the rotor 1.

[0061] In some embodiments, please refer to Figure 2 , Figure 3 and Figure 8 The rotor disk 11 has multiple second mounting slots 111, and the rotor teeth 12 are correspondingly arranged in the second mounting slots 111. That is, the multiple rotor teeth 12 are arranged one-to-one with the multiple second mounting slots 111, so as to facilitate the independent assembly and disassembly of the multiple rotor teeth 12 in the corresponding second mounting slots 111. By opening the second mounting slots 111 on the rotor disk 11, the installation of the rotor teeth 12 can be positioned, so that the distribution of the multiple rotor teeth 12 on the rotor disk 11 is more uniform. At the same time, the installation of the rotor teeth 12 can also be limited, so that the arrangement of the multiple rotor teeth 12 on the rotor disk 11 is more stable, thereby improving the overall structural stability of the rotor 1.

[0062] In some examples, a limiting groove 112 is formed in one of the sidewalls of the second mounting groove 111 and the side of the rotor tooth 12, and a third limiting part 123 protrudes from the other sidewall of the second mounting groove 111 and the side of the rotor tooth 12. The third limiting part 123 is used to cooperate with the limiting groove 112 to limit the position of the rotor tooth 12 in the axial direction Y of the rotor 1. That is, by embedding the third limiting part 123 into the limiting groove 112, the position of the rotor tooth 12 in the axial direction Y of the rotor 1 is limited, thereby improving the stability of the rotor tooth 12 in the second mounting groove 111, reducing the risk of the rotor tooth 12 disengaging from the rotor disk 11 during the rotation of the rotor 1, and thus improving the overall structural stability of the rotor 1.

[0063] The second mounting groove 111 extends radially X along the rotor 1 and penetrates at least one side of the rotor disk 11. That is, when installing the rotor teeth 12, the rotor teeth 12 can be inserted into the rotor disk 11 from one side of the rotor 1 along the radial X of the rotor 1. This structural design makes the assembly of the rotor teeth 12 and the rotor disk 11 simpler and more convenient.

[0064] It should be noted that the cross-section of the second mounting groove 111 in the radial direction X perpendicular to the rotor 1 can be in various shapes such as dovetail, U-shape or T-shape. Correspondingly, the rotor teeth 12 are designed to fit the shape of the second mounting groove 111, and no special restrictions are imposed here.

[0065] In some embodiments, please refer to Figure 2 and Figure 8 A fourth limiting part 124 is provided on the rotor teeth 12, and a fifth limiting part 131 is provided on the first magnetic element 13. The fifth limiting part 131 is used to cooperate with the fourth limiting part 124 to limit the position of the first magnetic element 13 in the axial direction Y of the rotor 1. By utilizing the cooperation of the fourth limiting part 124 and the fifth limiting part 131, the stability of the first magnetic element 13 between two adjacent rotor teeth 12 can be improved, reducing the risk of the first magnetic element 13 detaching from the rotor disk 11 during the rotation of the rotor 1, thereby improving the overall structural stability of the rotor 1.

[0066] The fourth limiting part 124 protrudes from the side surface of the rotor tooth 12, and the fifth limiting part 131 protrudes from the side surface of the first magnetic element 13. Along the axial direction Y of the rotor 1, the side of the fifth limiting part 131 facing away from the rotor disk 11 abuts against the side of the fourth limiting part 124 facing the rotor disk 11. That is, along the axial direction Y of the rotor 1, the first magnetic element 13 is integrally pressed between the rotor disk 11 and the rotor tooth 12 to improve the stability of the first magnetic element 13 between two adjacent rotor teeth 12, reduce the risk of the first magnetic element 13 detaching from the rotor disk 11 during rotor 1 rotation, and thus improve the overall structural stability of the rotor 1.

[0067] It should be noted that the fourth limiting part 124 and the fifth limiting part 131 can also be a slot structure and a protruding structure, respectively. That is, the fourth limiting part 124 is a slot structure formed on the side surface of the rotor tooth 12, and the fifth limiting part 131 protrudes from the side surface of the first magnetic element 13; or, the fifth limiting part 131 is a slot structure formed on the side surface of the first magnetic element 13, and the fourth limiting part 124 protrudes from the side surface of the rotor tooth 12. By embedding the protruding structure into the slot structure, the position of the first magnetic element 13 in the axial direction Y of the rotor 1 can also be limited. The specific structure of the fourth limiting part 124 and the fifth limiting part 131 can be selected and adjusted according to actual design requirements, as long as the cooperation of the fourth limiting part 124 and the fifth limiting part 131 can improve the stability of the first magnetic element 13 between two adjacent rotor teeth 12, reduce the risk of the first magnetic element 13 detaching from the rotor disk 11 during the rotation of the rotor 1, and improve the overall structural stability of the rotor 1.

[0068] In some embodiments, a first gap 15 is formed between the fourth limiting portion 124 and the fifth limiting portion 131 in the circumferential Z direction of the rotor 1. The first gap 15 extends radially X along the rotor 1 and penetrates the rotor 1. That is, while the rotor teeth 12 and the first magnetic element 13 are engaged and limited by the fourth limiting portion 124 and the fifth limiting portion 131, the first gap 15 is also formed between the rotor teeth 12 and the first magnetic element 13. The first gap 15 forms a magnetic barrier structure. The magnetic barrier structure can adjust the magnetic field around the first magnetic element 13. When the rotor 1 is applied to a motor, it can reduce the torque pulsation and harmonics of the motor and improve the motor performance.

[0069] In some embodiments, please refer to Figure 2 , Figure 4 and Figure 5 The fourth limiting part 124, facing the rotor disk 11, includes a first abutting surface 1241 and a first transition surface 1242 connected to each other. The fifth limiting part 131, facing the rotor teeth 12, includes a second abutting surface 1311 and a second transition surface 1312 connected to each other. The first abutting surface 1241 and the first transition surface 1242 form an angle, and the first abutting surface 1241 is an inclined surface. The second abutting surface 1311 and the second transition surface 1312 form an angle, and the second abutting surface 1311 is an inclined surface.

[0070] In this configuration, the first contact surface 1241 abuts against the second contact surface 1311, and the first transition surface 1242, the second transition surface 1312, the side surface of the rotor tooth 12, and the side of the rotor disk 11 facing the first magnetic component 13 enclose and form the first gap 15. That is, the fourth limiting part 124 protrudes a considerable distance from the side surface of the rotor tooth 12. When the fourth limiting part 124 and the fifth limiting part 131 abut against each other through the first contact surface 1241 and the second contact surface 1311, there is a gap between the side surface of the rotor tooth 12 and the second transition surface 1312 of the fifth limiting part 131. By adjusting the width of the rotor tooth 12, the size of the first gap 15 can be adjusted, thereby adjusting the magnetic field around the rotor 1.

[0071] In some embodiments, a first gap 15 is provided between the first magnetic element 13 and the rotor teeth 12 in the circumferential Z direction of the rotor 1 to form a magnetic barrier structure between the first magnetic element 13 and the rotor teeth 12, thereby adjusting the magnetic field around the first magnetic element 13, reducing torque pulsation and harmonics of the motor, and improving motor performance. The first magnetic element 13 and the rotor teeth 12 can be directly spaced apart, or they can be abutted and limited to form a gap; no special restrictions are placed here, as long as a magnetic barrier structure is formed.

[0072] In some embodiments, a second gap (not shown in the figure) is formed between the second magnetic element 14 and the sidewall of the first mounting groove 121 in the circumferential Z direction along the rotor 1. That is, a magnetic barrier structure can also be formed between the second magnetic element 14 and the rotor teeth 12 to adjust the magnetic field around the second magnetic element 14. When adjusting the magnetic barrier structure, only the structure of the rotor teeth 12 or the second magnetic element 14 needs to be adjusted, and the structure of the first magnetic element 13 can remain unchanged, thereby helping to reduce the production cost caused by the change of the magnetic barrier structure.

[0073] It should be noted that the position of the second magnetic element 14 in the Y-axis of the rotor 1 can also be limited by setting a limiting structure between the second magnetic element 14 and the rotor teeth 12. The limiting structure can refer to the limiting structure between the rotor teeth 12 and the rotor disk 11 and between the rotor teeth 12 and the first magnetic element 13 in the above embodiment, which will not be described again here.

[0074] In some embodiments, the rotor teeth 12 are made of oriented silicon steel or sheet molding compound. When the rotor teeth 12 and the rotor disk 11 are connected in a detachable manner, the material of the rotor teeth 12 can be selected as a lower-cost, high-performance material, such as oriented silicon steel or sheet molding compound, to reduce production costs while ensuring the performance of the rotor 1 itself.

[0075] This application also provides an electric motor, which includes a rotor. The specific structure of the rotor is as described in the above embodiments. Since the electric motor in this application adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0076] The motor includes a shaft, a rotor 1, and a stator. The rotor 1 is rotatably connected to the shaft, and coils are wound on the stator. When the motor is working, the rotor 1 is driven to rotate by forming a magnetic field between the stator and the rotor 1, thereby realizing the motor drive.

[0077] Specifically, the rotor 1 includes a rotor disk 11, multiple rotor teeth 12, a first magnetic element 13, and a second magnetic element 14. The multiple rotor teeth 12 are connected to the rotor disk 11 and are located on one side of the rotor disk 11 along the axial direction Y. The multiple rotor teeth 12 are arranged along the circumferential direction Z of the rotor disk 11. The first magnetic element 13 is located between two adjacent rotor teeth 12, and the second magnetic element 14 is located on the side of the rotor teeth 12 away from the rotor disk 11. In this embodiment, by setting the second magnetic element 14 on the side of the rotor teeth 12 away from the rotor disk 11, the second magnetic element 14 is used as an auxiliary magnetic element. This allows the second magnetic element 14 to be closer to the air gap position during the use of the rotor 1. This enhances the air gap magnetic field strength between the rotor 1 and the stator, making the magnetic field more uniform and reducing hysteresis losses. At the same time, the setting of the second magnetic element 14 can also reduce torque pulsation and harmonics, improving motor performance.

[0078] This application also provides a vehicle, which includes a motor. The specific structure of the motor is as described in the above embodiments. Since the vehicle in this application adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0079] It should be noted that the vehicle may be a gasoline-powered vehicle, a plug-in hybrid electric vehicle, or a new energy vehicle, etc., and this disclosure does not make any specific restrictions.

[0080] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0081] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0082] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0083] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A rotor, characterized in that, include: Rotor disk; Multiple rotor teeth are connected to the rotor disk, the rotor teeth are located on one side of the rotor disk along the axial direction, and the multiple rotor teeth are arranged along the circumference of the rotor disk; The first magnetic element is disposed between two adjacent rotor teeth; The second magnetic element is disposed on the side of the rotor teeth away from the rotor disk.

2. The rotor according to claim 1, characterized in that, The rotor teeth have a first mounting groove on the side opposite to the rotor disk, and the second magnetic element is at least partially located in the first mounting groove.

3. The rotor according to claim 2, characterized in that, The first mounting groove has a first limiting part on its side wall, and the second magnetic component has a second limiting part. The second limiting part is used to cooperate with the first limiting part to limit the position of the second magnetic component in the rotor axis.

4. The rotor according to claim 2, characterized in that, The cross-sectional area of ​​the first mounting groove perpendicular to the rotor axis increases in the direction close to the rotor disk.

5. The rotor according to claim 4, characterized in that, The cross-sectional area of ​​the second magnetic element in the direction perpendicular to the rotor axis increases in the direction close to the rotor disk.

6. The rotor according to claim 2, characterized in that, The first mounting groove extends radially along the rotor and penetrates at least one side of the rotor teeth.

7. The rotor according to claim 1, characterized in that, The rotor teeth are detachably connected to the rotor disk.

8. The rotor according to claim 7, characterized in that, The rotor disk has multiple second mounting slots, and the rotor teeth are correspondingly arranged in the second mounting slots.

9. The rotor according to claim 8, characterized in that, A limiting groove is formed in one of the sidewalls of the second mounting groove and the sidewall of the rotor tooth, and a third limiting part is protruding in the other of the sidewalls of the second mounting groove and the sidewall of the rotor tooth. The third limiting part is used to cooperate with the limiting groove to limit the position of the rotor tooth in the rotor axis.

10. The rotor according to claim 8, characterized in that, The second mounting groove extends radially along the rotor and penetrates at least one side of the rotor disk.

11. The rotor according to any one of claims 1 to 10, characterized in that, The rotor teeth are provided with a fourth limiting part, and the first magnetic element is provided with a fifth limiting part. The fifth limiting part is used to cooperate with the fourth limiting part to limit the position of the first magnetic element in the rotor axis.

12. The rotor according to claim 11, characterized in that, The fourth limiting part protrudes from the side surface of the rotor teeth, and the fifth limiting part protrudes from the side surface of the first magnetic element; along the axial direction of the rotor, the side of the fifth limiting part away from the rotor disk abuts against the side of the fourth limiting part facing the rotor disk.

13. The rotor according to claim 11, characterized in that, Along the circumferential direction of the rotor, there is a first gap between the fourth limiting portion and the fifth limiting portion, the first gap extending radially along the rotor and penetrating the rotor.

14. The rotor according to claim 13, characterized in that, The fourth limiting part facing the rotor disk includes a first abutting surface and a first transition surface that are connected to each other, and the fifth limiting part facing the rotor teeth includes a second abutting surface and a second transition surface that are connected to each other. Wherein, the first abutting surface abuts against the second abutting surface, and the first transition surface, the second transition surface, the side surface of the rotor teeth, and the side of the rotor disk facing the first magnetic element enclose and form the first gap.

15. The rotor according to any one of claims 1 to 10, characterized in that, Along the circumferential direction of the rotor, there is a first gap between the first magnetic element and the rotor teeth.

16. The rotor according to any one of claims 2 to 6, characterized in that, Along the circumferential direction of the rotor, there is a second gap between the second magnetic element and the sidewall of the first mounting groove.

17. The rotor according to any one of claims 1 to 10 or 12 to 14, characterized in that, The rotor teeth are made of materials including oriented silicon steel or sheet molding compound.

18. An electric motor, characterized in that, Includes the rotor as described in any one of claims 1 to 17.

19. A vehicle, characterized in that, Includes the motor as described in claim 18.

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