Rotor, motor and vehicle

Abstract

The embodiment of the invention provides a rotor, a motor and a vehicle, and relates to the technical field of vehicles. The rotor comprises a rotor punching sheet and magnetic steel, and the magnetic steel is arranged in the rotor punching sheet. A first rotor groove, a second rotor groove and a third rotor groove are formed in the rotor punching sheet on a tangent plane perpendicular to the axial direction of the rotor, the third rotor groove is in a triangular ring shape with an opening, and the two ends of the third rotor groove are communicated with the first end of the first rotor groove and the first end of the second rotor groove respectively. The magnetic steel comprises first magnetic steel and second magnetic steel, the first rotor groove is filled with the first magnetic steel, the second rotor groove is filled with the second magnetic steel, and the third rotor groove is filled with a stainless steel material. And the third rotor slots filled with the stainless steel material are high in magnetic conductivity, so that the magnetic circuit distribution of the rotor punching sheet is improved, and a motor with a higher rotating speed can be realized.

Description

Technical Field

[0001] The present disclosure relates to the field of vehicle technology, and in particular to a rotor, a motor and a vehicle. Background Art

[0002] With the rapid development of new energy vehicles, the main development direction of drive motors is to achieve higher speeds. At present, most traditional motors are tangential permanent magnet synchronous motors, but there is a large leakage flux at the end of the permanent magnet, which makes it difficult to achieve a higher speed. The leakage flux can be reduced by setting a rotor magnetic isolation bridge in the motor, but the motor rotor still has the problem of insufficient structural strength. The rotor is difficult to withstand large centrifugal forces at high speeds. In order to make the motor rotor achieve a higher speed, the strength of the rotor can be increased by increasing the thickness of the magnetic isolation bridge, but this method will affect the magnetic circuit structure of the rotor, reduce the motor performance, and increase the speed of the motor rotor to a small extent.

[0003] At present, the main design direction of permanent magnet synchronous motors in this field is to have high speed and high structural strength. The relevant technology generally improves the structural strength by adding inner slots or magnetic isolation bridges. The inner slots are set on the rotor and filled with materials to reduce magnetic leakage and improve the structural strength. However, the magnetic circuit structure of the rotor is complex, difficult to process and difficult to reach a high speed. Summary of the invention

[0004] In view of this, the embodiments of the present disclosure provide a rotor, a motor and a vehicle, which are conducive to realizing a motor with a higher rotation speed.

[0005] Specifically, the following technical solutions are included:

[0006] In a first aspect, an embodiment of the present disclosure provides a rotor, comprising a rotor punching and a magnetic steel, wherein the magnetic steel is disposed in the rotor punching;

[0007] On a section perpendicular to the axial direction of the rotor, the rotor punching is provided with a first rotor slot, a second rotor slot and a third rotor slot, the third rotor slot is a triangular ring with an opening, and two ends of the third rotor slot are respectively connected to the first end of the first rotor slot and the first end of the second rotor slot;

[0008] The magnetic steel includes a first magnetic steel and a second magnetic steel. The first magnetic steel is filled in the first rotor slot, the second magnetic steel is filled in the second rotor slot, and the third rotor slot is filled with stainless steel material.

[0009] Optionally, the opening of the third rotor slot is toward the outer peripheral side of the rotor punching, and the first rotor slot and the second rotor slot extend toward the outer peripheral side of the rotor punching respectively.

[0010] Optionally, the first rotor slot, the second rotor slot and the third rotor slot form an axisymmetric figure, and the extension direction of the symmetry axis of the axisymmetric figure is the same as the radial direction of the rotor punching sheet.

[0011] Optionally, the first rotor slot, the second rotor slot and the third rotor slot are multiple respectively, and the first rotor slot, the second rotor slot and the third rotor slot that are interconnected constitute a rotor slot group, and the multiple rotor slot groups are distributed in an array with the axis of the rotor punching as the center.

[0012] Optionally, the rotor punching is provided with a fourth rotor slot, the extension direction of the fourth rotor slot is the same as the radial direction of the rotor punching, and the fourth rotor slot is located between the first rotor slot of one rotor slot group and the second rotor slot of another adjacent rotor slot group.

[0013] Optionally, the magnetic steel further includes a third magnetic steel, and the third magnetic steel is filled in the fourth rotor slot.

[0014] Optionally, the rotor punching is provided with a plurality of fifth rotor slots, and the plurality of fifth rotor slots are distributed in an array with the axis of the rotor punching as the center.

[0015] Optionally, one end of the fourth rotor slot close to the axis of the rotor punching is connected to the fifth rotor slot, and the first rotor slot, the second rotor slot and the third rotor slot are located on the side of the fifth rotor slot away from the axis of the rotor punching.

[0016] In a second aspect, an embodiment of the present disclosure provides a motor, comprising any rotor according to the first aspect.

[0017] In a third aspect, an embodiment of the present disclosure provides a vehicle, comprising the motor according to the second aspect.

[0018] The beneficial effects of the technical solution provided by the embodiments of the present disclosure include at least:

[0019] In the rotor provided by the embodiment of the present disclosure, a triangular annular third rotor slot is provided on the rotor punching sheet, and a stainless steel material is provided in the third rotor slot, which can improve the strength of the rotor punching sheet. Moreover, the magnetic permeability of the third rotor slot filled with stainless steel material is relatively high, which improves the magnetic circuit distribution of the rotor punching sheet and is conducive to realizing a higher speed motor. The first rotor slot and the second rotor slot are respectively filled with the first magnetic steel and the second magnetic steel, which can increase the magnetic density of the rotor punching sheet, improve the air gap magnetic density waveform of the motor, and thus increase the speed of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 A schematic diagram of a rotor provided for an embodiment of the present disclosure;

[0022] Figure 2 A partial schematic diagram of a rotor provided in an embodiment of the present disclosure.

[0023] The reference numerals in the figures represent respectively:

[0024] 1- rotor punching; 2- magnetic steel; 3- rotor shaft;

[0025] 100- rotor slot group; 101- first rotor slot; 102- second rotor slot; 103- third rotor slot; 104- fourth rotor slot; 105- fifth rotor slot; 106- opening; 107- first magnetic isolation bridge; 108- second magnetic isolation bridge; 109- third magnetic isolation bridge;

[0026] 201 - first magnetic steel; 202 - second magnetic steel; 203 - third magnetic steel.

[0027] The above drawings show clear embodiments of the present disclosure, which will be described in more detail below. These drawings and text descriptions are not intended to limit the scope of the present disclosure in any way, but to illustrate the concepts of the present disclosure to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0029] With the rapid development of new energy vehicle technology, the main development direction of drive motors is to achieve higher speeds. At present, most traditional motors are tangential permanent magnet synchronous motors, but there is a large leakage flux at the end of the permanent magnet, which makes it difficult to achieve a higher speed. The leakage flux can be reduced by setting a rotor magnetic isolation bridge in the motor, but the motor rotor needs to withstand a large centrifugal force at high speeds, and the motor rotor structural strength is difficult to meet the requirements of high speeds. In order to adapt to higher speeds, the rotor core strength can be increased by increasing the thickness of the magnetic isolation bridge, but this method will affect the magnetic circuit structure, reduce motor performance, and increase the speed of the motor rotor to a small extent.

[0030] At present, the main design direction of permanent magnet synchronous motors in this field is to have high speed and high structural strength. The relevant technology generally improves the structural strength by adding inner slots or magnetic isolation bridges. The inner slots are set on the rotor and filled with materials to reduce magnetic leakage and improve the structural strength. However, the magnetic circuit structure of the rotor is complex, difficult to process and difficult to reach a high speed.

[0031] In view of this, an embodiment of the present disclosure provides a rotor that is conducive to realizing a motor with a higher rotation speed. Figure 1 Schematic diagram of a rotor provided in an embodiment of the present disclosure. Figure 1 As shown, the rotor includes a rotor punching 1 and a magnetic steel 2, and the magnetic steel 2 is arranged in the rotor punching 1. On a section perpendicular to the axial direction of the rotor, the rotor punching 1 is provided with a first rotor slot 101, a second rotor slot 102 and a third rotor slot 103, and the third rotor slot 103 is a triangular ring with an opening 106, and the two ends of the third rotor slot 103 are respectively connected to the first end of the first rotor slot 101 and the first end of the second rotor slot 102. The magnetic steel 2 includes a first magnetic steel 201 and a second magnetic steel 202, the first magnetic steel 201 is filled in the first rotor slot 101, the second magnetic steel 202 is filled in the second rotor slot 102, and the third rotor slot 103 is filled with stainless steel material.

[0032] In the rotor provided by the embodiment of the present disclosure, a triangular annular third rotor slot 103 is provided on the rotor punching 1, and a stainless steel material is provided in the third rotor slot 103, which can improve the strength of the rotor punching 1. The third rotor slot 103 filled with stainless steel material has a higher magnetic permeability, which improves the magnetic circuit distribution of the rotor punching 1, and is conducive to realizing a higher speed motor. The first rotor slot 101 and the second rotor slot 102 are filled with the first magnetic steel 201 and the second magnetic steel 202 respectively, and the first magnetic steel 201 and the second magnetic steel 202 can increase the magnetic density of the rotor and improve the air gap magnetic density waveform of the rotor, thereby increasing the speed of the motor. Moreover, the rotor punching 1 has a simple structure and is easy to process, which is conducive to reducing the production cost of the motor.

[0033] In order to make the technical solutions and advantages of the present disclosure more clear, the embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.

[0034] like Figure 1 As shown, the rotor provided by the first aspect of the embodiment of the present disclosure includes a rotor sheet 1 and a magnetic steel 2, and the magnetic steel 2 is located in the rotor sheet 1. The rotor sheet 1 is provided with a first rotor slot 101, a second rotor slot 102 and a third rotor slot 103, the first rotor slot 101 and the second rotor slot 102 are long strips, and the first rotor slot 101 and the second rotor slot 102 have the same size. The third rotor slot 103 is a triangular ring with an opening 106, and one end of the third rotor slot 103 at the opening 106 is connected to the first rotor slot 101, and the other end of the third rotor slot 103 at the opening 106 is connected to the second rotor slot 102. The first rotor slot 101 and the second rotor slot 102 are symmetrically distributed about the center line a of the rotor sheet 1, and the third rotor slot 103 itself is symmetrically distributed about the center line a of the rotor sheet 1. The magnetic steel 2 includes a first magnetic steel 201 and a second magnetic steel 202. The first magnetic steel 201 is filled in the first rotor slot 101, and the second magnetic steel 202 is filled in the second rotor slot 102. The first magnetic steel 201 and the second magnetic steel 202 are used to increase the magnetic flux density of the rotor, improve the air gap magnetic flux waveform of the motor, and thus increase the speed of the motor. The third rotor slot 103 is filled with stainless steel material. The strength and magnetic permeability of the stainless steel material are high, which can reduce magnetic flux leakage and increase the strength of the rotor. The stainless steel material is arranged at intervals in the third rotor slot 103, thereby optimizing the magnetic circuit structure of the rotor and making it easier for the motor to achieve a higher speed.

[0035] Figure 2 A partial schematic diagram of a rotor provided in an embodiment of the present disclosure. For example, see Figure 2 The third rotor slot 103 is filled with three sections of stainless steel material, which are respectively located in the three sides of the triangular ring-shaped third rotor slot, and the three sections of stainless steel material have gaps, which can reduce leakage magnetic flux and play a magnetic isolation role, thereby improving the magnetic circuit structure of the rotor.

[0036] In some embodiments of the present disclosure, Figure 1 As shown, the opening 106 of the third rotor slot 103 faces the outer peripheral side of the rotor sheet 1, and the first rotor slot 101 and the second rotor slot 102 extend toward the outer peripheral side of the rotor sheet 1. The first rotor slot 101 and the second rotor slot 102 are arranged in a V shape relative to the center line a of the rotor sheet 1, and the angle α between the extension direction of the first rotor slot 101 and the extension direction of the second rotor slot 102 is 130°-180°.

[0037] In some embodiments of the present disclosure, see Figure 2, the first rotor slot 101, the second rotor slot 102 and the third rotor slot 103 form an axisymmetric figure, and the extension direction of the axis of symmetry of the axisymmetric figure is the same as the radial direction of the rotor punching 1. It can be seen that the axis of symmetry of the axisymmetric figure formed by the first rotor slot 101, the second rotor slot 102 and the third rotor slot 103 can be the center line a of the rotor punching 1.

[0038] Alternatively, see Figure 1 The rotor provided in the embodiment of the present disclosure further includes a rotor shaft 3 , which passes through a through hole arranged along the axis of the rotor punching 1 and is fixedly connected to the rotor punching 1 , and the rotor shaft 3 is configured to be driven to rotate by the rotor punching 1 .

[0039] In some embodiments of the present disclosure, Figure 1 As shown, there are multiple first rotor slots 101, second rotor slots 102 and third rotor slots 103, which are interconnected to form a rotor slot group 100. The multiple rotor slot groups 100 are distributed in an array with the axis of the rotor punching 1 as the center.

[0040] For example, see Figure 1 , eight first rotor slots 101, eight second rotor slots 102 and eight third rotor slots 103 are arranged on the rotor punching 1, and the eight first rotor slots 101, eight second rotor slots 102 and eight third rotor slots 103 are arranged in an array along the center of the rotor punching 1. The first rotor slots 101, the second rotor slots 102 and the third rotor slots 103 that are interconnected constitute eight rotor slot groups 100, and the structure of each rotor slot group 100 is exactly the same, and each rotor slot 100 is at the same distance from the outer peripheral side of the punching 1. Correspondingly, the magnetic steel 2 includes eight first magnetic steels 201 and eight second magnetic steels 202, and each first rotor slot 101 is provided with a first magnetic steel 201, each second rotor slot 102 is provided with a second magnetic steel 202, and each third rotor slot 103 is filled with stainless steel material.

[0041] In some embodiments of the present disclosure, Figure 1 As shown, the rotor punching 1 is provided with a fourth rotor slot 104, the extension direction of the fourth rotor slot 104 is the same as the radial direction of the rotor punching 1, and the fourth rotor slot 104 is located between the first rotor slot 101 of one rotor slot group 100 and the second rotor slot 102 of another adjacent rotor slot group 100.

[0042] Alternatively, see Figure 1 The magnetic steel 2 further includes a third magnetic steel 203, which is filled in the fourth rotor slot 104. The third magnetic steel 203 filled in the fourth rotor slot 104 can increase the magnetic flux of the rotor, thereby improving the power of the motor, which is conducive to achieving a higher speed motor.

[0043] Exemplarily, the rotor sheet 1 is provided with eight fourth rotor slots 104 and eight rotor slot groups 100 , and the eight fourth rotor slots 104 and the eight rotor slot groups 100 are alternately arranged around each other.

[0044] Specifically, in the tangential direction along the rotor punching 1, the width D1 of the fourth rotor slot 104 is 18 mm-22 mm, and in the radial direction along the rotor punching 1, the length L1 of the first rotor slot 104 is 50 mm-54 mm. Preferably, the width D1 of the fourth rotor slot 104 is 20 mm, and the length L1 of the first rotor slot 104 is 52 mm.

[0045] In some embodiments of the present disclosure, Figure 1 As shown, the rotor sheet 1 is provided with a plurality of fifth rotor slots 105, and the plurality of fifth rotor slots 105 are arranged in an array with the axis of the rotor sheet 1 as the center. Specifically, the plurality of fifth rotor slots 105 are arranged in an array along the center of the rotor sheet 1, and the opposite ends of each fifth rotor slot 105 are spaced apart from other adjacent fifth rotor slots 105. The plurality of fifth rotor slots 105 have the same structure and size, and the plurality of fifth rotor slots 105 are specifically the same as the outer peripheral side of the rotor sheet 1.

[0046] In some embodiments of the present disclosure, Figure 1 As shown, one end of the fourth rotor slot 104 close to the axis of the rotor sheet 1 is connected to the fifth rotor slot 105, and the first rotor slot 101, the second rotor slot 102 and the third rotor slot 103 are located on the side of the fifth rotor slot 105 away from the axis of the rotor sheet 1. Exemplarily, the rotor sheet 1 is provided with four fifth rotor slots 105 and eight rotor slot groups 100, and in the radial direction along the rotor sheet 1, each of the four rotor slot groups 100 is surrounded by a fifth rotor slot 105, two fourth rotor slots 104 and the outer peripheral side of the rotor sheet 1, and the other four rotor slot groups 100 are opposite to the interval area between two adjacent fifth rotor slots 105. During the operation of the motor, the N pole formed by the rotor slot group 100 is opposite to the interval between the fifth rotor slot 105, and the S pole formed by the rotor slot group 100 is opposite to the fifth rotor slot 105, and the fourth rotor slot 104 and the fifth rotor slot 105 isolate the N pole magnetic circuit and the S pole magnetic circuit, thereby reducing the magnetic leakage of the rotor. Alternatively, the S pole formed by the rotor slot group 100 is opposite to the interval between the fifth rotor slots 105 , and the N pole formed by the rotor slot group 100 is opposite to the fifth rotor slot 105 .

[0047] Specifically, the width D2 of the fifth rotor slot 105 is 9 mm-10 mm, and the distance D3 between two adjacent fifth rotor slots 105 is 9 mm-11 mm. Preferably, the width D2 of the fifth rotor slot 105 is 9.5 mm, and the distance D3 between two adjacent fifth rotor slots 105 is 10 mm.

[0048] It should be noted that the fifth rotor slot 105 is filled with insulating material, such as a mixture of plastic, epoxy resin and aluminum oxide. The filled insulating material can improve the strength of the rotor punching sheet 1 after being cured with a curing agent, and can withstand higher temperatures.

[0049] In some embodiments of the present disclosure, see Figure 1 , a plurality of first magnetic isolation bridges 107 are arranged on the rotor sheet 1, and the first magnetic isolation bridges 107 are located between the first rotor slot 101 and the outer peripheral side of the sheet 1, and between the second rotor slot 102 and the outer peripheral side of the sheet 1. Exemplarily, sixteen first magnetic isolation bridges 107 are arranged on the rotor sheet 1, and the sixteen first magnetic isolation bridges 107 are respectively located between the first rotor slot 101 and the second rotor slot 102 and the outer peripheral side of the sheet 1. Since the strength and magnetic permeability of the stainless steel filler in the third rotor slot 103 are relatively high, the leakage of magnetic flux is reduced, the radial stress of the rotor is effectively offset, and the structural strength of the rotor is improved. Moreover, without changing the overall size of the rotor sheet 1, the thickness of the first magnetic isolation bridge 107 can be increased to reduce magnetic leakage, thereby improving the motor performance on the basis of ensuring strength, thereby achieving a higher speed.

[0050] In some embodiments of the present disclosure, see Figure 2 A second magnetic isolation bridge 108 is provided at the opening 106, and the second magnetic isolation bridge 108 is used to reduce leakage magnetic flux.

[0051] Optionally, in the tangential direction of the rotor sheet 1, the width D4 of the second magnetic isolation bridge 108 is 2 mm to 4 mm. Preferably, the width D4 of the second magnetic isolation bridge 108 is 3 mm.

[0052] In some embodiments of the present disclosure, Figure 2 As shown, in the radial direction of the rotor sheet 1, the width D5 of the third rotor slot 103 is 2 mm-3 mm, and in the tangential direction of the rotor sheet 1, the length L2 of the side of the triangular third rotor slot 103 close to the center of the rotor sheet 1 is 8 mm-9 mm. Preferably, the width D5 of the third rotor slot 103 is 2.5 mm, and the length L2 of the side of the third rotor slot 103 close to the center of the rotor sheet 1 is 8.5 mm.

[0053] Alternatively, if Figure 2As shown, the length L3 of the second rotor slot 102 is 12 mm-15 mm, and the width D6 of the second rotor slot 102 is 2.5 mm-3.5 mm. Preferably, the length L3 of the second rotor slot 102 is 14 mm, and the width D6 of the second rotor slot 102 is 2.9 mm.

[0054] In some embodiments of the present disclosure, Figure 2 As shown, a third magnetic isolation bridge 109 is provided between two adjacent fifth rotor slots 105 of the rotor punching 1. The third magnetic isolation bridge 109 is used to reduce the rotor leakage flux and enhance the structural strength of the rotor. The third magnetic isolation bridge 109 is only connected to the N-pole magnetic circuit and is not connected to the S-pole magnetic circuit, which effectively reduces the magnetic leakage of the rotor magnetic circuit.

[0055] In a second aspect, an embodiment of the present disclosure further provides a motor, which includes any one of the rotors in the above embodiments.

[0056] In the motor provided by the embodiment of the present disclosure, the rotor includes a rotor sheet 1 and a magnetic steel 2, and the magnetic steel 2 is located in the rotor sheet 1. The rotor sheet 1 is provided with a first rotor slot 101, a second rotor slot 102 and a third rotor slot 103, the first rotor slot 101 and the second rotor slot 102 are long strips, and the first rotor slot 101 and the second rotor slot 102 have the same structure and size. The third rotor slot 103 is a triangular ring with an opening 106, one end of the third rotor slot 103 at the opening 106 is connected to the first rotor slot 101, and the other end of the third rotor slot 103 at the opening 106 is connected to the second rotor slot 102. The first rotor slot 101 and the second rotor slot 102 are symmetrically distributed about the center line a of the rotor sheet 1, and the third rotor slot 103 itself is symmetrically distributed about the center line a of the rotor sheet 1. The magnetic steel 2 includes a first magnetic steel 201 and a second magnetic steel 202. The first magnetic steel 201 is filled in the first rotor slot 101, and the second magnetic steel 202 is filled in the second rotor slot 102. The first magnetic steel 201 and the second magnetic steel 202 are used to increase the magnetic flux density of the rotor, improve the air gap magnetic flux waveform of the motor, and thus increase the speed of the motor. The third rotor slot 103 is filled with stainless steel material, which can increase the strength of the rotor. The stainless steel material is arranged at intervals in the third rotor slot 103, thereby optimizing the magnetic circuit structure of the rotor and making it easier for the motor to achieve a higher speed.

[0057] In a third aspect, an embodiment of the present disclosure provides a vehicle, which includes the motor in the above embodiment.

[0058] In the vehicle provided by the embodiment of the present disclosure, the rotor of the motor includes a rotor sheet 1 and a magnetic steel 2, and the magnetic steel 2 is located in the rotor sheet 1. The rotor sheet 1 is provided with a first rotor slot 101, a second rotor slot 102 and a third rotor slot 103, the first rotor slot 101 and the second rotor slot 102 are long strips, and the first rotor slot 101 and the second rotor slot 102 have the same structure and size. The third rotor slot 103 is a triangular ring with an opening 106, one end of the third rotor slot 103 at the opening 106 is connected to the first rotor slot 101, and the other end of the third rotor slot 103 at the opening 106 is connected to the second rotor slot 102. The first rotor slot 101 and the second rotor slot 102 are symmetrically distributed about the center line a of the rotor sheet 1, and the third rotor slot 103 itself is symmetrically distributed about the center line a of the rotor sheet 1. The magnetic steel 2 includes a first magnetic steel 201 and a second magnetic steel 202. The first magnetic steel 201 is filled in the first rotor slot 101, and the second magnetic steel 202 is filled in the second rotor slot 102. The first magnetic steel 201 and the second magnetic steel 202 are used to increase the magnetic flux density of the rotor, improve the air gap magnetic flux waveform of the motor, and thus increase the speed of the motor. The third rotor slot 103 is filled with stainless steel material, which can increase the strength of the rotor. The stainless steel material is arranged at intervals in the third rotor slot 103, thereby optimizing the magnetic circuit structure of the rotor, making it easier for the motor to achieve a higher speed and improving the overall performance of the vehicle.

[0059] It should be noted that the "several" and "at least one" mentioned in this article refer to one or more, and "multiple" and "at least two" refer to two or more. "And / or" describes the association relationship of the associated objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0060] In the description of the present disclosure, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0061] In the present disclosure, unless otherwise expressly specified and limited, a first feature being “above” or “below” a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being “above”, “above”, and “above” a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0062] In the description of the present disclosure, 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", "axial", "radial", "circumferential" and the like 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 application and simplifying the description, and do not indicate or imply that the referred device or element 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 disclosure.

[0063] In the description of this specification, the description with reference to the terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present disclosure.

[0064] The above descriptions are merely embodiments of the present disclosure and are not intended to limit the present disclosure. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A rotor, characterized in that: It comprises a rotor punching sheet (1) and a magnetic steel (2), wherein the magnetic steel (2) is arranged in the rotor punching sheet (1); On a section perpendicular to the axial direction of the rotor, the rotor punching sheet (1) is provided with a first rotor slot (101), a second rotor slot (102) and a third rotor slot (103); the third rotor slot (103) is a triangular ring with an opening (106); two ends of the third rotor slot (103) are respectively connected to a first end of the first rotor slot (101) and a first end of the second rotor slot (102); The magnetic steel (2) comprises a first magnetic steel (201) and a second magnetic steel (202), wherein the first magnetic steel (201) is filled in the first rotor slot (101), the second magnetic steel (202) is filled in the second rotor slot (102), and the third rotor slot (103) is filled with a stainless steel material.

2. The rotor according to claim 1, characterized in that The opening (106) of the third rotor slot (103) faces the outer peripheral side of the rotor punching (1), and the first rotor slot (101) and the second rotor slot (102) respectively extend in a direction close to the outer peripheral side of the rotor punching (1).

3. The rotor according to claim 2, characterized in that The first rotor slot (101), the second rotor slot (102) and the third rotor slot (103) form an axisymmetric figure, and the extension direction of the symmetry axis of the axisymmetric figure is the same as the radial direction of the rotor punching sheet (1).

4. The rotor according to claim 3, characterized in that The first rotor slot (101), the second rotor slot (102) and the third rotor slot (103) are respectively a plurality, and the first rotor slot (101), the second rotor slot (102) and the third rotor slot (103) which are interconnected constitute a rotor slot group (100), and the plurality of rotor slot groups (100) are distributed in an array with the axis of the rotor punching sheet (1) as the center.

5. The rotor according to claim 4, characterized in that The rotor punching (1) is provided with a fourth rotor slot (104), the extension direction of the fourth rotor slot (104) is the same as the radial direction of the rotor punching (1), and the fourth rotor slot (104) is located between a first rotor slot (101) of one rotor slot group (100) and a second rotor slot (102) of another adjacent rotor slot group (100).

6. The rotor according to claim 5, characterized in that The magnetic steel (2) further comprises a third magnetic steel (203), wherein the third magnetic steel (203) is filled in the fourth rotor slot (104).

7. The rotor according to claim 5, characterized in that The rotor punching sheet (1) is provided with a plurality of fifth rotor slots (105), and the plurality of fifth rotor slots (105) are distributed in an array with the axis of the rotor punching sheet (1) as the center.

8. The rotor according to claim 6, characterized in that One end of the fourth rotor slot (104) close to the axis of the rotor punching (1) is connected to the fifth rotor slot (105), and the first rotor slot (101), the second rotor slot (102) and the third rotor slot (103) are located on a side of the fifth rotor slot (105) away from the axis of the rotor punching (1).

9. A motor, characterized in that: The motor comprises the rotor according to any one of claims 1-8.

10. A vehicle, characterized in that: The vehicle comprises the electric machine of claim 9.

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