Rotor structure and motor

Abstract

The utility model discloses a rotor structure and a motor, the rotor structure comprises a rotor iron core, the rotor iron core is provided with a first permanent magnet groove and a magnetic isolation groove, the extension direction of the first permanent magnet groove is orthogonal to the radial direction of the rotor iron core, and the first permanent magnet groove is suitable for accommodating a first permanent magnet; the at least one magnetic isolation groove corresponds to the first permanent magnet groove and is positioned on one side, close to the outer edge of the rotor core, of the first permanent magnet groove; wherein the area of the first permanent magnets on the axial cross section of the rotor core is S1, the total area of the magnetic isolation grooves on the axial cross section of the rotor core is S2, and S2 / S1 is larger than or equal to 0.9 and smaller than or equal to 1.3. According to the rotor structure designed by the utility model, the volume and the cost of the motor can be prevented from being increased while the efficiency of the motor is improved.

Description

Technical Field

[0001] The utility model relates to the field of motors, in particular to a rotor structure and a motor. Background Art

[0002] In related technologies, the compressor motor is one of the core components of the compressor, and its working efficiency directly affects the efficiency of the compressor. In order to improve the efficiency of the compressor motor, some existing technologies achieve motor efficiency improvement by improving the structure of the motor. This method makes the manufacturing cost of the motor high. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a rotor structure. The rotor structure designed according to the present invention can improve motor efficiency while avoiding increasing the size and cost of the motor.

[0004] The utility model also provides a motor with the above rotor structure.

[0005] According to the present invention, the rotor structure includes: a rotor core, on which a first permanent magnet slot and a magnetic isolation slot are provided, the extension direction of the first permanent magnet slot is orthogonal to the radial direction of the rotor core and is suitable for accommodating a first permanent magnet, the magnetic isolation slot is arranged corresponding to the first permanent magnet slot and is located on the side of the first permanent magnet slot close to the outer edge of the rotor core, and there is at least one magnetic isolation slot; wherein the area of ​​the first permanent magnet on the axial cross-section of the rotor core is S1, the total area of ​​the magnetic isolation slot on the axial cross-section of the rotor core is S2, and satisfies: 0.9≤S2 / S1≤1.3.

[0006] According to the rotor structure of the present invention, the efficiency of the motor is improved by adjusting the area of ​​the first permanent magnet and the area of ​​the magnetic isolation groove without adding other structures. It can ensure the structural strength of the rotor core while ensuring the magnetic isolation effect of the magnetic isolation groove, and can avoid increasing the volume and cost of the motor while achieving the efficiency improvement of the motor.

[0007] According to some embodiments of the present invention, the width of the first permanent magnet perpendicular to the magnetization direction is W1, the total width of the magnetic isolation groove perpendicular to the magnetization direction is W2, and the following relationship is satisfied: 0.3≤W2 / W1≤0.5.

[0008] According to some embodiments of the present invention, the total length of the magnetic isolation groove along the magnetization direction is L1, and satisfies: 1.8≤L1 / W1≤2.8.

[0009] According to some embodiments of the present invention, on the axial cross-section of the rotor core, the angle formed by the first permanent magnet in the width direction and the center line of each magnetic isolation slot is An, and satisfies: 50°≤An≤75°.

[0010] According to some embodiments of the present invention, the magnetic isolation grooves are configured in plurality, and in an axial cross section of the rotor core, the plurality of magnetic isolation grooves are symmetrically arranged about a center line of the first permanent magnet.

[0011] According to some embodiments of the present invention, the magnetic isolation grooves are configured in multiple forms, and the widths of the multiple magnetic isolation grooves in a direction perpendicular to the magnetization direction are different.

[0012] According to some embodiments of the present invention, perpendicular to the magnetization direction, among the multiple magnetic isolation grooves, the magnetic isolation groove with the largest width is the first magnetic isolation groove, and the magnetic isolation groove with the smallest width is the second magnetic isolation groove. The width of the first magnetic isolation groove is W3, and the width of the second magnetic isolation groove is W4, and it satisfies: 0.3≤W4 / W3≤1.

[0013] According to some embodiments of the present invention, the magnetic isolation grooves are configured in multiple forms, and the widths of the multiple magnetic isolation grooves in a direction perpendicular to the magnetization direction are the same.

[0014] According to some embodiments of the present invention, on the axial cross section of the rotor core, each of the magnetic isolation slots is bent in a direction away from the first permanent magnet slot.

[0015] According to some embodiments of the present invention, one end of the magnetic isolation groove has a first center line, and the other end of the magnetic isolation groove has a second center line. The maximum angle between the first center line and the second center line is C, and satisfies: 150°≤C≤175°.

[0016] According to some embodiments of the present invention, a second permanent magnet slot and a third permanent magnet slot are also provided on the rotor core, the second permanent magnet slot is suitable for accommodating the second permanent magnet, and the third permanent magnet slot is suitable for accommodating the third permanent magnet. On the axial cross-section of the rotor core, the second permanent magnet slot and the third permanent magnet slot are respectively arranged at both ends of the first permanent magnet slot in the width direction.

[0017] According to some embodiments of the present invention, in an axial cross section of the rotor core, the second permanent magnet slot and the third permanent magnet slot are symmetrically arranged about a center line of the first permanent magnet slot.

[0018] According to some embodiments of the present invention, on the axial cross-section of the rotor core, the included angle between the second permanent magnet slot and the first permanent magnet slot in the width direction is A, and satisfies: 100°≤A≤160°.

[0019] The following briefly describes a motor according to another embodiment of the present invention.

[0020] The motor according to the present invention includes the rotor structure described in any one of the above embodiments. Since the motor according to the present invention is provided with the rotor structure described in the above embodiments, the compressor has low cost and higher efficiency.

[0021] To sum up, according to the rotor structure of the present invention, the efficiency of the motor is improved by adjusting the area of ​​the first permanent magnet and the area of ​​the magnetic isolation groove, which can ensure the structural strength of the rotor core, while ensuring the magnetic isolation effect of the magnetic isolation groove and avoiding increasing the volume and cost of the motor.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0024] Figure 1 It is a cross-sectional view of the rotor structure according to some embodiments of the present utility model.

[0025] Figure 2 yes Figure 1 Enlarged view of the structure at Q in the middle.

[0026] Figure 3 It is a structural schematic diagram of the magnetic isolation groove according to other embodiments of the present utility model.

[0027] Figure 4 It is a structural schematic diagram of the magnetic isolation groove according to some embodiments of the present utility model.

[0028] Reference numerals:

[0029] 1. Rotor core; 2. First permanent magnet slot; 3. Magnetic isolation slot; 31. First magnetic isolation slot; 32. Second magnetic isolation slot; 4. First permanent magnet; 5. Second permanent magnet slot; 6. Third permanent magnet slot; 7. Second permanent magnet; 8. Third permanent magnet. DETAILED DESCRIPTION

[0030] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] Furthermore, 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 quantity of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0033] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or mutual communication; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0034] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0035] In related technologies, the compressor motor is one of the core components of the compressor, and its working efficiency directly affects the efficiency of the compressor. In order to improve the efficiency of the compressor motor, some existing technologies achieve motor efficiency improvement by improving the structure of the motor. This method makes the manufacturing cost of the motor high.

[0036] Reference below Figure 1-Figure 4The rotor structure according to the embodiment of the present invention is described.

[0037] like Figure 1 As shown, the rotor structure according to the present invention includes: a rotor core 1, on which a first permanent magnet slot 2 and a magnetic isolation slot 3 are provided, the extension direction of the first permanent magnet slot 2 is orthogonal to the radial direction of the rotor core 1 and is suitable for accommodating the first permanent magnet 4, the magnetic isolation slot 3 is arranged corresponding to the first permanent magnet slot 2 and is located on the side of the first permanent magnet slot 2 close to the outer edge of the rotor core 1, and there is at least one magnetic isolation slot 3; wherein the area of ​​the first permanent magnet 4 on the axial cross-section of the rotor core 1 is S1, and the total area of ​​the magnetic isolation slot 3 on the axial cross-section of the rotor core 1 is S2, and satisfies: 0.9≤S2 / S1≤1.3. Specifically, a magnetic isolation slot 3 is provided on the rotor core 1 to adjust the magnetic field generated by the first permanent magnet 4. It can be understood that the area of ​​the magnetic isolation slot 3 should not be too large, otherwise it will be connected to the first permanent magnet slot 2 and affect the structural strength of the rotor core 1. The area of ​​the magnetic isolation slot 3 should not be too small, otherwise the magnetic isolation effect of the magnetic isolation slot 3 will not be obvious. In addition, the magnetic isolation slot 3 can be constructed as one or more. When there are multiple magnetic isolation slots 3, the total area of ​​the multiple magnetic isolation slots 3 is S2. The area of ​​the magnetic isolation slot 3 is related to the area occupied by the first permanent magnet 4. When the area S1 of the first permanent magnet 4 on the axial section of the rotor core 1 and the total area S2 of the magnetic isolation slot 3 on the axial section of the rotor core 1 meet 0.9≤S2 / S1≤1.3, the magnetic isolation effect of the magnetic isolation slot 3 can be guaranteed while ensuring the structural strength of the rotor core 1, so as to improve the efficiency of the motor.

[0038] According to the rotor structure of the present invention, the efficiency of the motor is improved by adjusting the area of ​​the first permanent magnet 4 and the area of ​​the magnetic isolation slot 3 without adding other structures. It can ensure the magnetic isolation effect of the magnetic isolation slot 3 while ensuring the structural strength of the rotor core 1, and can avoid increasing the volume and cost of the motor while achieving the improvement of the motor efficiency.

[0039] According to some embodiments of the present invention, Figure 2As shown, the width of the first permanent magnet 4 in the direction perpendicular to the magnetization direction is W1, the total width of the magnetic isolation slot 3 in the direction perpendicular to the magnetization direction is W2, and the following condition is satisfied: 0.3≤W2 / W1≤0.5. It can be understood that the total width of the magnetic isolation slot 3 in the direction perpendicular to the magnetization direction should not be too large to avoid the magnetic isolation slot 3 obstructing the magnetic field, thereby avoiding reducing the motor efficiency and affecting the structural strength of the rotor core 1. The total width of the magnetic isolation slot 3 in the direction perpendicular to the magnetization direction should not be too small. If it is too small, the magnetic isolation effect of the magnetic isolation slot 3 will not be obvious. In addition, the magnetic isolation slot 3 can be constructed as one or more. When there are multiple magnetic isolation slots 3, the sum of the widths of each magnetic isolation slot 3 in the direction perpendicular to the magnetization direction is W2. The total width of the magnetic isolation slot 3 in the direction perpendicular to the magnetization direction is related to the width of the first permanent magnet 4 in the direction perpendicular to the magnetization direction. When the width W1 of the first permanent magnet 4 in the direction perpendicular to the magnetization direction and the total width W2 of the magnetic isolation slot 3 in the direction perpendicular to the magnetization direction satisfy 0.3≤W2 / W1≤0.5, the magnetic isolation effect of the magnetic isolation slot 3 can be guaranteed while ensuring the motor efficiency.

[0040] According to some embodiments of the present invention, the total length of the magnetic isolation slots 3 along the magnetization direction is L1, and satisfies the following: 1.8≤L1 / W1≤2.8. Specifically, when there are multiple magnetic isolation slots 3, the sum of the lengths of each magnetic isolation slot 3 along the magnetization direction is L1. Similarly, to ensure the structural strength of the rotor core 1 while also guaranteeing the magnetic isolation effect of the magnetic isolation slots 3, the width W1 of the first permanent magnet 4 perpendicular to the magnetization direction and the total length L1 of the magnetic isolation slots 3 along the magnetization direction must satisfy 1.8≤L1 / W1≤2.8.

[0041] According to some embodiments of the present invention, Figure 2 As shown, in the axial cross-section of the rotor core 1, the angle An formed between the first permanent magnet 4 and the centerline of each magnetic isolation slot 3 in the width direction satisfies the following conditions: 50°≤An≤75°. Here, the angle A1 formed between the first permanent magnet 4 and the centerline of the first magnetic isolation slot 3 in the width direction, and the angle A2, ..., An formed between the first permanent magnet 4 and the centerline of the second magnetic isolation slot 3 in the width direction, are not too small to prevent the magnetic isolation slots 3 from being horizontally distributed and obstructing the magnetic field. Furthermore, the angle An formed between the first permanent magnet 4 and the centerline of the magnetic isolation slot 3 in the width direction, are not too large to prevent the magnetic isolation slots 3 from being perpendicular to the first permanent magnet 4 and affecting the working efficiency of the rotor structure. Therefore, the angle An formed between the first permanent magnet 4 and the centerline of the magnetic isolation slot 3 in the width direction should satisfy 50°≤An≤75° to ensure both the normal operation and the working efficiency of the rotor structure.

[0042] According to some embodiments of the present invention, Figure 2-Figure 4As shown, the magnetic isolation slots 3 are constructed in plurality. On the axial cross-section of the rotor core 1, the plurality of magnetic isolation slots 3 are symmetrically arranged about the center line of the first permanent magnet 4, so that the magnetic field formed by the rotor structure is more symmetrical, and the plurality of magnetic isolation slots 3 are symmetrically arranged on both sides of the center line of the first permanent magnet 4, which makes processing more convenient and production easier.

[0043] Of course, the lengths of the magnetic isolation slots 3 located on the same side of the center line of the first permanent magnet 4 may also be different.

[0044] According to some embodiments of the present invention, Figure 2 As shown, there are multiple magnetic isolation grooves 3, and the widths of the multiple magnetic isolation grooves 3 in the direction perpendicular to the magnetization direction are different, so as to achieve magnetic isolation effects on magnetic field densities at different locations.

[0045] According to some embodiments of the present invention, Figure 3 As shown, perpendicular to the magnetization direction, among the multiple magnetic isolation slots 3, the widest magnetic isolation slot 3 is the first magnetic isolation slot 31, and the smallest magnetic isolation slot 3 is the second magnetic isolation slot 32. The width of the first magnetic isolation slot 31 is W3, and the width of the second magnetic isolation slot 32 is W4, and they satisfy the following relationship: 0.3≤W4 / W3≤1. It can be understood that a magnetic isolation slot 3 with a width that is too small will affect processing, while a magnetic isolation slot 3 with a width that is too large will affect the magnetic field. In addition, the difference in width between different magnetic isolation slots 3 should not be too large. The width of the widest magnetic isolation slot 3 and the smallest magnetic isolation slot 3 should satisfy the following relationship: 0.3≤W4 / W3≤1, so as to reduce processing difficulty while ensuring magnetic field density.

[0046] According to some embodiments of the present invention, Figure 2 or Figure 4 As shown, the magnetic isolation grooves 3 are constructed in multiple configurations, and the widths of the multiple magnetic isolation grooves 3 in the direction perpendicular to the magnetization direction are the same to facilitate processing operations.

[0047] According to some embodiments of the present invention, Figure 4 As shown, in the axial cross section of the rotor core 1, each magnetic isolation slot 3 is bent away from the first permanent magnet slot 2. In some embodiments, the plurality of magnetic isolation slots 3 are symmetrically arranged about the center line of the first permanent magnet 4, and the magnetic isolation slots 3 on both sides of the center line of the first permanent magnet 4 are bent away from each other.

[0048] According to some embodiments of the present invention, Figure 4As shown, the magnetic isolation slot 3 has a first centerline at one end and a second centerline at the other end. The maximum angle C between the first and second centerlines satisfies the following conditions: 150°≤C≤175°. The curvature of the magnetic isolation slot 3 should not be too large, as this can cause machining difficulties and affect the magnetic field. Specifically, the magnetic isolation slot 3 achieves optimal magnetic isolation when the maximum angle C between the first and second centerlines satisfies the following conditions: 150°≤C≤175°.

[0049] According to some embodiments of the present invention, Figure 1 As shown, the rotor core 1 is further provided with a second permanent magnet slot 5 and a third permanent magnet slot 6. The second permanent magnet slot 5 is suitable for accommodating a second permanent magnet 7, and the third permanent magnet slot 6 is suitable for accommodating a third permanent magnet 8. In the axial cross-section of the rotor core 1, the second permanent magnet slot 5 and the third permanent magnet slot 6 are respectively arranged at both ends of the width direction of the first permanent magnet slot 2. In some embodiments, the second permanent magnet slot 5, the first permanent magnet slot 2, and the third permanent magnet slot 6 are sequentially connected, the second permanent magnet 7, the first permanent magnet 4, and the third permanent magnet 8 are arranged at intervals, and the extension directions of the second permanent magnet slot 5, the first permanent magnet slot 2, and the third permanent magnet slot 6 intersect with each other. This rotor structure can improve the efficiency of the motor without increasing the manufacturing cost of the motor.

[0050] According to some embodiments of the present invention, Figure 1 As shown, in the axial section of the rotor core 1 , the second permanent magnet slot 5 and the third permanent magnet slot 6 are symmetrically arranged about the center line of the first permanent magnet slot 2 to form a symmetrical magnetic field.

[0051] According to some embodiments of the present invention, Figure 2 As shown, in the axial cross-section of the rotor core 1, the angle A between the second permanent magnet slot 5 and the first permanent magnet slot 2 in the width direction is 100°≤A≤160°. Specifically, the angle between the second permanent magnet slot 5 and the first permanent magnet slot 2 in the width direction should not be too small, as this will make it difficult to magnetize the permanent magnets. The angle between the second permanent magnet slot 5 and the first permanent magnet slot 2 in the width direction should also not be too large, as this will degrade energy efficiency. Therefore, the angle A between the second permanent magnet slot 5 and the first permanent magnet slot 2 in the width direction should satisfy 100°≤A≤160° to ensure both the normal operation of the rotor structure and the working efficiency of the rotor structure.

[0052] The motor according to the present invention is briefly described below.

[0053] The motor according to the present invention includes the rotor structure described in any one of the above embodiments. Since the motor according to the present invention is provided with the rotor structure described in the above embodiments, the compressor has low cost and higher efficiency.

[0054] To sum up, according to the rotor structure of the present invention, the efficiency of the motor is improved by adjusting the area of ​​the first permanent magnet 4 and the area of ​​the magnetic isolation slot 3, which can ensure the structural strength of the rotor core 1, while ensuring the magnetic isolation effect of the magnetic isolation slot 3 and avoiding increasing the volume and cost of the motor.

[0055] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification.

[0056] While embodiments of the present invention have been shown and described above, changes, modifications, substitutions, and variations may be made to the embodiments described above.

Claims

1. A rotor structure, characterized in that: include: A rotor core (1), wherein the rotor core (1) is provided with a first permanent magnet slot (2) and a magnetic isolation slot (3), wherein the extension direction of the first permanent magnet slot (2) is orthogonal to the radial direction of the rotor core (1) and is suitable for accommodating a first permanent magnet (4), and the magnetic isolation slot (3) is arranged corresponding to the first permanent magnet slot (2) and is located on a side of the first permanent magnet slot (2) close to the outer edge of the rotor core (1), and the magnetic isolation slot (3) is constructed as at least one; wherein The area of ​​the first permanent magnet (4) on the axial cross section of the rotor core (1) is S1, the total area of ​​the magnetic isolation slots (3) on the axial cross section of the rotor core (1) is S2, and the following relationship is satisfied: 0.9≤S2 / S1≤1.

3.

2. The rotor structure according to claim 1, characterized in that: The width of the first permanent magnet (4) perpendicular to the magnetization direction is W1, the total width of the magnetic isolation slot (3) perpendicular to the magnetization direction is W2, and the following relationship is satisfied: 0.3≤W2 / W1≤0.

5.

3. The rotor structure according to claim 2, characterized in that: The total length of the magnetic isolation groove (3) along the magnetization direction is L1, and satisfies the following conditions: 1.8≤L1 / W1≤2.

8.

4. The rotor structure according to claim 1, characterized in that: On the axial cross section of the rotor core (1), the angle formed by the first permanent magnet (4) in the width direction and the center line of each magnetic isolation slot (3) is An, and satisfies: 50°≤An≤75°.

5. The rotor structure according to claim 1, characterized in that: The magnetic isolation slots (3) are constructed in plurality, and on an axial cross section of the rotor core (1), the plurality of magnetic isolation slots (3) are symmetrically arranged about a center line of the first permanent magnet (4).

6. The rotor structure according to claim 1, characterized in that: The magnetic isolation grooves (3) are constructed in a plurality, and the widths of the plurality of magnetic isolation grooves (3) are different in a direction perpendicular to the magnetization direction.

7. The rotor structure according to claim 6, characterized in that: In a direction perpendicular to the magnetization direction, among the plurality of magnetic isolation grooves (3), the magnetic isolation groove (3) with the largest width is the first magnetic isolation groove (31), and the magnetic isolation groove (3) with the smallest width is the second magnetic isolation groove (32). The width of the first magnetic isolation groove (31) is W3, and the width of the second magnetic isolation groove (32) is W4, and the following condition is satisfied: 0.3≤W4 / W3≤1.

8. The rotor structure according to claim 1, characterized in that: The magnetic isolation grooves (3) are constructed in a plurality, and the widths of the plurality of magnetic isolation grooves (3) in a direction perpendicular to the magnetization direction are the same.

9. The rotor structure according to claim 8, characterized in that: On the axial cross section of the rotor core (1), each of the magnetic isolation slots (3) is bent in a direction away from the first permanent magnet slot (2).

10. The rotor structure according to claim 9, characterized in that: One end of the magnetic isolation groove (3) has a first center line, and the other end of the magnetic isolation groove (3) has a second center line. The maximum angle between the first center line and the second center line is C, and satisfies: 150°≤C≤175°.

11. The rotor structure according to claim 1, characterized in that: The rotor core (1) is further provided with a second permanent magnet slot (5) and a third permanent magnet slot (6); the second permanent magnet slot (5) is suitable for accommodating a second permanent magnet (7); the third permanent magnet slot (6) is suitable for accommodating a third permanent magnet (8); and on an axial cross section of the rotor core (1), the second permanent magnet slot (5) and the third permanent magnet slot (6) are respectively arranged at both ends of the first permanent magnet slot (2) in a width direction.

12. The rotor structure according to claim 11, characterized in that: On an axial cross section of the rotor core (1), the second permanent magnet slot (5) and the third permanent magnet slot (6) are symmetrically arranged about a center line of the first permanent magnet slot (2).

13. The rotor structure according to claim 12, characterized in that: On an axial cross section of the rotor core (1), the included angle between the second permanent magnet slot (5) and the first permanent magnet slot (2) in the width direction is A, and satisfies the following: 100°≤A≤160°.

14. A motor, characterized in that: The invention comprises a rotor structure according to any one of claims 1 to 13.

Images