CN216851474U - Motor rotor, motor and electric automobile - Google Patents
Motor rotor, motor and electric automobile Download PDFInfo
- Publication number
- CN216851474U CN216851474U CN202123401110.3U CN202123401110U CN216851474U CN 216851474 U CN216851474 U CN 216851474U CN 202123401110 U CN202123401110 U CN 202123401110U CN 216851474 U CN216851474 U CN 216851474U
- Authority
- CN
- China
- Prior art keywords
- circular arc
- arc section
- shaped mounting
- rotor
- mounting groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The application provides a motor rotor, motor and electric automobile. This electric motor rotor includes rotor core, in the cross section of the central axis of perpendicular to rotor core, under one utmost point, rotor core's rotor excircle includes the first circular arc section that sets gradually along circumference from both sides to the centre, second circular arc section and third circular arc section, be located the first circular arc section of magnetic pole central line both sides, second circular arc section and third circular arc section are about magnetic pole central line symmetry, first circular arc section and the coaxial setting of rotor core, second circular arc section indent, and the centre of a circle of second circular arc section is located rotor core's the excircle outside, the third circular arc section is for first circular arc section eccentric settings, and the diameter of third circular arc section is less than first circular arc section. According to the motor rotor, the motor can be in sine with no-load counter electromotive force, the harmonic content and the torque pulsation of the motor are reduced, and the performance of the motor is improved.
Description
Technical Field
The application relates to the technical field of motors, in particular to a motor rotor, a motor and an electric automobile.
Background
With the increasing importance of people on environmental protection and efficient energy utilization, the trend of automobiles under the eye becomes a common industrial consensus, the electric surge of automobiles is increasingly disturbed, and the driving motor is used as a key ring for energy conversion of new energy automobiles, so that the new energy automobiles are greatly influenced. The permanent magnet synchronous motor has the advantages of large torque density, high efficiency, good stability, high reliability and the like, so that the permanent magnet synchronous motor is widely applied to the field of pure electric or hybrid new energy automobiles.
With the development of new energy industry technology and the reduction of policy subsidies, the cost pressure of the motor is higher, the performance of the whole vehicle is met by outputting the maximum torque with the least cost, and the cost performance of the motor is improved. Therefore, the development of a reluctance motor with relatively low cost is of great significance. In the process of developing a reluctance motor, the problems of high harmonic content, large torque pulsation and the like often occur, so that the performance of the motor is reduced.
SUMMERY OF THE UTILITY MODEL
Therefore, the technical problem that this application will be solved lies in providing a motor rotor, motor and electric automobile, can make the no-load back electromotive force of motor sinusoidal, reduces motor harmonic content and torque ripple, improves the motor performance.
In order to solve the above problem, the application provides a motor rotor, including rotor core, in the cross section of the central axis of perpendicular to rotor core, under one utmost point, rotor core's rotor excircle includes the first circular arc section that sets gradually along circumference from both sides to the centre, second circular arc section and third circular arc section, be located the first circular arc section of magnetic pole central line both sides, second circular arc section and third circular arc section are symmetrical about the magnetic pole central line, first circular arc section and the coaxial setting of rotor core, second circular arc section indent, and the centre of a circle of second circular arc section is located rotor core's the excircle outside, third circular arc section is for first circular arc section eccentric settings, and the diameter of third circular arc section is less than first circular arc section.
Preferably, the radius of the first circular arc segment is r1, the radius of the circular arc at which the center of the second circular arc segment is located is r4, the center of r4 coincides with the center of the first circular arc segment, and r4-r1 are 0.9 mm-1.4 mm.
Preferably, the radius of the first circular arc segment is r1, the radius of the third circular arc segment is r3, r3+ RL is r1, and RL is 0.6mm to 0.7 mm.
Preferably, the line connecting the centers of the second arc segments on both sides of the center line of the magnetic pole and the center of the rotor core forms an included angle Ra, where Ra is 35 ° to 36.3 °.
Preferably, the rotor core includes a U-shaped mounting groove and a V-shaped mounting groove, the V-shaped mounting groove being located at an inner side region of the U-shaped mounting groove.
Preferably, the included angle between two inner side edges of the V-shaped mounting groove close to the central line of the magnetic pole is Ad, the included angle between two inner side edges of the U-shaped mounting groove close to the central line of the magnetic pole is Aa, and Ad-Aa is 21-22.3 degrees.
Preferably, be provided with the magnet steel in V-arrangement mounting groove and the U-shaped mounting groove, the V-arrangement mounting groove still including being located the magnet steel and being close to the first outer groove of rotor excircle one side, the U-shaped mounting groove still including being located the magnet steel and being close to the second outer groove of rotor excircle one side.
Preferably, the minimum distance between the outer side edge of the first outer groove and the inner side edge of the second outer groove is k, the radius of the second circular arc segment is r2, and k-r2 is 1.7 mm-2 mm.
Preferably, an included angle between two inner side edges of the V-shaped mounting groove close to the magnetic pole center line is Ad, an included angle between two inner side edges of the U-shaped mounting groove close to the magnetic pole center line is Aa, an included angle between two side edges of the first outer groove far away from the magnetic pole center line is Af, and an included angle between two side edges of the second outer groove close to the magnetic pole center line is Ab, (Ad-Aa)/(Ab-Af) ═ 3.95-4.0.
Preferably, the included angle between two sides of the first outer slot far away from the center line of the magnetic pole is Af, the included angle between two sides of the first outer slot near the center line of the magnetic pole is Ae, and Ae/Af is 1.22-1.23.
Preferably, the included angle between two inner side edges of the U-shaped mounting groove close to the center line of the magnetic pole is Aa, the included angle between two side edges of the second outer groove close to the center line of the magnetic pole is Ab, the included angle between two side edges of the second outer groove far away from the center line of the magnetic pole is Ac, Ab/Aa is 2.75-2.83, and Ac/Aa is 1.9-1.96.
Preferably Aa is 44 ° -45 °.
Preferably, the midpoint of a connecting line between two nearest end points of two magnetic steels close to the center line of the magnetic pole in the V-shaped mounting groove is m, the midpoint of one side of the magnetic steels close to the V-shaped mounting groove in the U-shaped mounting groove is n, the radial distance between m and n is h, the thickness of the magnetic steels in the U-shaped mounting groove is MAb, the thickness of the magnetic steels in the V-shaped mounting groove is MBb, and h/(MBb-MAb) is 36.5-38.8.
According to another aspect of the present application, there is provided an electric machine comprising an electric machine rotor as described above.
Preferably, the outer diameter of the stator of the motor is 230mm, the peak power is 70Kw-80Kw, the peak torque is 270Nm-300Nm, and the peak rotation speed is 9000rpm-12000 rpm.
According to another aspect of the present application, an electric vehicle is provided, which includes an electric motor, and the electric motor is the electric motor described above.
The application provides an electric motor rotor, including rotor core, in the cross section of the central axis of perpendicular to rotor core, under one utmost point, rotor core's rotor excircle includes the first circular arc section that sets gradually along circumference from both sides to the centre, second circular arc section and third circular arc section, be located the first circular arc section of magnetic pole central line both sides, second circular arc section and third circular arc section are symmetrical about the magnetic pole central line, first circular arc section and the coaxial setting of rotor core, second circular arc section indent, and the centre of a circle of second circular arc section is located rotor core's the excircle outside, third circular arc section is for first circular arc section eccentric settings, and the diameter of third circular arc section is less than first circular arc section. The motor rotor optimizes the structure of the outer circle of the rotor, and adjusts and controls the no-load back electromotive force of the motor by adopting a multi-section arc section matched mode, so that the no-load back electromotive force of the motor is sinusoidal, the harmonic content and the torque pulsation of the motor are greatly reduced, and the performance of the motor is improved.
Drawings
FIG. 1 is a schematic view of a rotor of an electric machine according to an embodiment of the present application;
FIG. 2 is a schematic view of a pole of a rotor of an electric machine according to an embodiment of the present application;
FIG. 3 is a dimensional block diagram of a rotor of an electric machine according to an embodiment of the present application;
FIG. 4 is a dimensional block diagram of a rotor of an electric machine according to an embodiment of the present application;
FIG. 5 is a dimensional block diagram of a rotor of an electric machine according to an embodiment of the present application;
FIG. 6 is a dimensional block diagram of a rotor of an electric machine according to an embodiment of the present application;
FIG. 7 is a no-load back emf simulation diagram of a motor according to an embodiment of the present application;
fig. 8 is a no-load back electromotive force simulation diagram of a motor of the related art.
The reference numerals are represented as:
1. a rotor core; 2. a first arc segment; 3. a second arc segment; 4. a third arc segment; 5. a U-shaped mounting groove; 6. a V-shaped mounting groove; 7. magnetic steel; 8. a first outer tank; 9. a second outer tank.
Detailed Description
Referring to fig. 1 to 6 in combination, according to an embodiment of the present application, a rotor of an electric machine includes a rotor core 1, in a cross section vertical to the central axis of the rotor core 1, under one pole, the outer circle of the rotor core 1 comprises a first arc section 2, a second arc section 3 and a third arc section 4 which are sequentially arranged from two sides to the middle along the circumferential direction, the first arc section 2, the second arc section 3 and the third arc section 4 which are positioned at two sides of the central line of a magnetic pole are symmetrical about the central line of the magnetic pole, the first arc section 2 is coaxially arranged with the rotor core 1, the second arc section 3 is sunken towards the center of the rotor core 1, so that the concave surface of the second arc section 3 faces the outer circle of the rotor, and the centre of a circle of the second arc section 3 is located on the outer side of the outer circle of the rotor core 1, the third arc section 4 is eccentrically arranged relative to the first arc section 2, and the diameter of the third arc section 4 is smaller than that of the first arc section 2.
The motor rotor optimizes the structure of the outer circle of the rotor, and adjusts and controls the no-load back electromotive force of the motor by adopting a multi-section arc section matched mode, so that the no-load back electromotive force of the motor is sinusoidal, the harmonic content and the torque pulsation of the motor are greatly reduced, and the performance of the motor is improved.
In this embodiment, first arc segment 2 of rotor core 1 is located the both sides of the rotor excircle circumferential direction of a magnetic pole, and second arc segment 3 links to each other with first arc segment 2, and third arc segment 4 links to each other with second arc segment 3, and two third arc segments 4 meet in magnetic pole central line department.
In one embodiment, the radius of the first circular arc segment 2 is r1, the radius of the circular arc where the center O1 of the second circular arc segment 3 is located is r4, the center of r4 coincides with the center O of the first circular arc segment 2, and r4-r1 are 0.9 mm-1.4 mm. Preferably, r4-r1 is 1.1 mm.
In one embodiment, the radius of the first circular arc segment 2 is r1, the center of the third circular arc segment 4 is O2, O2 is eccentrically arranged with respect to O1, the radius of the third circular arc segment 4 is r3, r3+ RL is r1, and RL is 0.6mm to 0.7 mm. Preferably, RL-0.65 mm.
The structural design of the rotor excircle can optimize the structure of the rotor excircle, so that the no-load counter electromotive force of the motor is sinusoidal. Referring to fig. 7 and 8 in combination, for a motor in the related art, a motor manufactured by using the motor rotor in the embodiment of the present application has a better motor no-load back electromotive force sinusoidal effect, and the motor harmonic content is reduced from 6% to 2.55%, so that the motor harmonic content is greatly reduced, the torque ripple of the motor is reduced, and the motor performance is improved.
In one embodiment, the line connecting the centers of the second arc segments 3 on both sides of the pole center line and the center of the rotor core 1 forms an included angle Ra of 35 ° -36.3 °, preferably, Ra of 36.1 °.
In one embodiment, rotor core 1 includes U-shaped mounting groove 5 and V-shaped mounting groove 6, and V-shaped mounting groove 6 is located at an inner region of U-shaped mounting groove 5. In this embodiment, the V-shaped mounting groove 6 is symmetrical about the magnetic pole center line, and the V-shaped opening faces the rotor outer circle, the U-shaped mounting groove 5 is symmetrical about the magnetic pole center line I, and the opening faces the rotor outer circle, the V-shaped mounting groove 6 is located inside the U-shaped area of the U-shaped mounting groove 5, the opening of the U-shaped mounting groove 5 is in an outward-expanding structure, the bottom groove of the U-shaped mounting groove 5 is perpendicular to the magnetic pole center line I, and is located at the end of the U-shaped mounting groove 5 away from the rotor outer circle.
Form first magnetism bridge Q1 that separates between the radial outside limit of U-shaped mounting groove 5 and the rotor excircle, first magnetism bridge Q1 that separates can reduce the magnetic leakage, improves reluctance impedance. One side of the radial outer side of the U-shaped mounting groove 5, which is far away from the center line of the magnetic pole, is in transition connection with the side of the U-shaped mounting groove 5, which is far away from the center line of the magnetic pole, through an arc, and one end of the U-shaped mounting groove 5, which is close to the center line of the magnetic pole, is in transition connection with the side of the U-shaped mounting groove 5, which is close to the center line of the magnetic pole, through an arc.
Form second magnetism bridge Q2 that separates between the radial outside limit of V-arrangement mounting groove 6 and the rotor excircle, second magnetism bridge Q2 that separates can reduce the magnetic leakage, improves reluctance impedance. One side of the radial outer side of the V-shaped mounting groove 6, which is far away from the central line of the magnetic pole, is in transition connection with the side of the V-shaped mounting groove 6, which is far away from the central line of the magnetic pole, through an arc, and one end of the V-shaped mounting groove 6, which is close to the central line of the magnetic pole, is in transition connection with the side of the V-shaped mounting groove 6, which is close to the central line of the magnetic pole, through an arc.
In one embodiment, magnetic steels 7 are arranged in the V-shaped mounting groove 6 and the U-shaped mounting groove 5, the V-shaped mounting groove 6 further comprises a first outer groove 8 located on one side of the magnetic steels 7 close to the outer circle of the rotor, and the U-shaped mounting groove 5 further comprises a second outer groove 9 located on one side of the magnetic steels 7 close to the outer circle of the rotor.
In this embodiment, the width of the notch of the first outer groove 8 facing the magnetic steel 7 is smaller than the thickness of the magnetic steel 7, so that a step is formed between the main groove where the first outer groove 8 and the magnetic steel 7 are located, and the magnetic steel 7 is attached to the step surface of the step. The width of this step is 0.8mm ~ 1.1mm, preferably 1mm, and this width can form effective spacing to the magnet steel 7 that is located V-arrangement mounting groove 6, guarantees electric motor rotor's mechanical strength, improves the security of rotor, can reduce the magnetic leakage of V-arrangement mounting groove 6 simultaneously, improves reluctance torque.
The interval sets up between two sides of V-arrangement mounting groove 6, forms the third and separates magnetic bridge Q3 between two sides of V-arrangement mounting groove 6, and the third separates magnetic bridge Q3 and can reduce the magnetic leakage, improves reluctance torque.
In one embodiment, the minimum distance between the outer side of the first outer slot 8 and the inner side of the second outer slot 9 is k, the radius of the second circular arc segment 3 is r2, and k-r2 is 1.7 mm-2 mm. Preferably, k-r2 is 1.8 mm. The motor is combined with the limiting structure of the outer circle of the rotor, so that the no-load back electromotive force of the motor can be more effectively sinusoidal, the harmonic content and the torque pulsation of the motor are greatly reduced, and the performance of the motor is improved.
In one embodiment, the included angle between two inner side edges of the V-shaped mounting groove 6 close to the magnetic pole center line is Ad, the included angle between two inner side edges of the U-shaped mounting groove 5 close to the magnetic pole center line is Aa, the included angle between two side edges of the first outer groove 8 far away from the magnetic pole center line is Af, and the included angle between two side edges of the second outer groove 9 close to the magnetic pole center line is Ab, (Ad-Aa)/(Ab-Af) ═ 3.95-4.0. Preferably, (Ad-Aa)/(Ab-Af) ═ 4.02.
In one embodiment, the included angle between two sides of the first outer slot 8 away from the center line of the magnetic pole is Af, the included angle between two sides of the first outer slot 8 close to the center line of the magnetic pole is Ae, and Ae/Af is 1.22-1.23. Preferably, Ae/Af is 1.226.
In one embodiment, the included angle between two inner side edges of the V-shaped mounting groove 6 close to the central line of the magnetic pole is Ad, the included angle between two inner side edges of the U-shaped mounting groove 5 close to the central line of the magnetic pole is Aa, and Ad-Aa is 21-22.3 degrees. Preferably, Ad-Aa is 21.7 °.
Above-mentioned restraint can carry out optimal design to the shape and the position of installation magnet steel 7's mounting groove to increase q axle inductance, reduce the magnetic leakage, promote reluctance torque, reduce torque pulsation, promote motor efficiency, guarantee the mechanical strength of rotor, improve the security of rotor.
In one embodiment, the included angle between two inner side edges of the U-shaped mounting groove 5 close to the center line of the magnetic pole is Aa, the included angle between two side edges of the second outer groove 9 close to the center line of the magnetic pole is Ab, the included angle between two side edges of the second outer groove 9 far away from the center line of the magnetic pole is Ac, Ab/Aa is 2.75-2.83, and Ac/Aa is 1.9-1.96. Preferably, Ab/Aa is 2.8 and Ac/Aa is 1.93 °.
In one embodiment, Aa is 44 ° -45 °, preferably 44.8.
Through making between Aa, Ab and the Ac correlation, make and to form the restraint each other between the three, make two magnet steels in the outside be close to the rotor and outwards open along the air duct orientation of one end, and contained angle Ab > Ac, can increase q axle inductance, reduce the magnetic leakage, promote reluctance torque, reduce torque pulsation.
In one embodiment, a midpoint of a connecting line between two nearest end points of two magnetic steels 7 in the V-shaped mounting groove 6 close to a magnetic pole center line is m, a midpoint of one side of the magnetic steels 7 in the U-shaped mounting groove 5 close to the V-shaped mounting groove 6 is n, a radial distance between m and n is h, a thickness of the magnetic steels 7 in the U-shaped mounting groove 5 is MAb, a thickness of the magnetic steels 7 in the V-shaped mounting groove 6 is MBb, and h/(MBb-MAb) ═ 36.5-38.8. Preferably, h/(MBb-MAb) ═ 37.5. The constraint relation can reduce local demagnetization of the tail end of the magnetic steel B, improve the overall demagnetization resistance of the motor and improve the motor efficiency.
According to an embodiment of the application, the electric machine comprises an electric machine rotor, which is the electric machine rotor described above.
Aiming at the problems of motor output torque, torque pulsation, no-load back electromotive force sine, harmonic content, demagnetization resistance and the like, the motor for the logistics vehicle is designed through the outer edge of a rotor core, a magnetic steel groove and magnetic steel, the motor has the stator outer diameter of 230mm, the peak power of 70Kw-80Kw, the peak torque of 270Nm-300Nm and the peak rotating speed of 9000rpm-12000 rpm.
According to an embodiment of the application, the electric vehicle comprises the motor, and the motor is the motor.
It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.
The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed. The foregoing is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present application, and these modifications and variations should also be considered as the protection scope of the present application.
Claims (16)
1. The utility model provides a motor rotor, its characterized in that includes rotor core (1), in the cross section of the central axis of perpendicular to rotor core (1), under one utmost point, the rotor excircle of rotor core (1) includes along circumference from both sides to middle first circular arc section (2), second circular arc section (3) and the third circular arc section (4) that set gradually, be located magnetic pole central line both sides first circular arc section (2), second circular arc section (3) and third circular arc section (4) about magnetic pole central line symmetry, first circular arc section (2) with rotor core (1) coaxial arrangement, second circular arc section (3) indent, just the centre of a circle of second circular arc section (3) is located the excircle outside of rotor core (1), third circular arc section (4) for first circular arc section (2) eccentric settings, and the diameter of the third circular arc section (4) is smaller than that of the first circular arc section (2).
2. The electric motor rotor as recited in claim 1, characterized in that the radius of the first circular arc segment (2) is r1, the radius of the circular arc at which the center of the second circular arc segment (3) is located is r4, the center of r4 coincides with the center of the first circular arc segment (2), and r4-r1 is 0.9 mm-1.4 mm.
3. An electric machine rotor according to claim 1, characterised in that the first circular arc section (2) has a radius r1 and the third circular arc section (4) has a radius r3, r3+ RL-r 1, RL-0.6-0.7 mm.
4. The electric motor rotor according to claim 1, characterized in that the line between the centers of the second circular arc segments (3) on both sides of the pole center line and the center of the rotor core (1) forms an included angle Ra of 35-36.3 °.
5. An electric machine rotor according to claim 1, characterized in that the rotor core (1) comprises a U-shaped mounting slot (5) and a V-shaped mounting slot (6), the V-shaped mounting slot (6) being located in the inner area of the U-shaped mounting slot (5).
6. An electric motor rotor as claimed in claim 5, characterized in that the angle between the two inner sides of the V-shaped mounting groove (6) close to the pole centre line is Ad, the angle between the two inner sides of the U-shaped mounting groove (5) close to the pole centre line is Aa, Ad-Aa equals 21 ° -22.3 °.
7. The electric motor rotor according to claim 5 or 6, characterized in that magnetic steel (7) is arranged in the V-shaped mounting groove (6) and the U-shaped mounting groove (5), the V-shaped mounting groove (6) further comprises a first outer groove (8) located on one side of the magnetic steel (7) close to the outer circle of the rotor, and the U-shaped mounting groove (5) further comprises a second outer groove (9) located on one side of the magnetic steel (7) close to the outer circle of the rotor.
8. An electric machine rotor according to claim 7, characterised in that the minimum distance between the outer side of the first outer slot (8) and the inner side of the second outer slot (9) is k, and that the radius of the second circular arc segment (3) is r2, k-r2 being 1.7-2 mm.
9. An electric motor rotor as claimed in claim 7, characterized in that the angle between the two inner sides of the V-shaped mounting groove (6) close to the pole centre line is Ad, the angle between the two inner sides of the U-shaped mounting groove (5) close to the pole centre line is Aa, the angle between the two sides of the first outer groove (8) remote from the pole centre line is Af, the angle between the two sides of the second outer groove (9) close to the pole centre line is Ab, (Ad-Aa)/(Ab-Af) ═ 3.95-4.0.
10. The machine rotor according to claim 7, characterised in that the angle between the two sides of the first outer slot (8) away from the pole centre line is Af, the angle between the two sides of the first outer slot (8) close to the pole centre line is Ae, and Ae/Af is 1.22-1.23.
11. The motor rotor as recited in claim 7, characterized in that the included angle between two inner side edges of the U-shaped mounting groove (5) close to the center line of the magnetic pole is Aa, the included angle between two side edges of the second outer groove (9) close to the center line of the magnetic pole is Ab, the included angle between two side edges of the second outer groove (9) far away from the center line of the magnetic pole is Ac, Ab/Aa is 2.75-2.83, and Ac/Aa is 1.9-1.96.
12. An electric machine rotor as claimed in claim 11, characterized in that Aa-44 ° -45 °.
13. The motor rotor according to claim 7, characterized in that the midpoint of a connecting line between two nearest end points of two magnetic steels (7) in the V-shaped mounting groove (6) close to the center line of the magnetic pole is m, the midpoint of one side of the magnetic steels (7) in the U-shaped mounting groove (5) close to the V-shaped mounting groove (6) is n, the radial distance between m and n is h, the thickness of the magnetic steels (7) in the U-shaped mounting groove (5) is MAb, the thickness of the magnetic steels (7) in the V-shaped mounting groove (6) is MBb, and h/(MBb-MAb) is 36.5-38.8.
14. An electrical machine comprising an electrical machine rotor, characterized in that the electrical machine rotor is an electrical machine rotor according to any one of claims 1 to 13.
15. A machine as claimed in claim 14, characterized in that the stator of the machine has an outer diameter of 230mm, a peak power of 70Kw-80Kw, a peak torque of 270Nm-300Nm and a peak rotational speed of 9000rpm-12000 rpm.
16. An electric vehicle comprising an electric machine, characterized in that the electric machine is an electric machine according to claim 14 or 15.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123401110.3U CN216851474U (en) | 2021-12-30 | 2021-12-30 | Motor rotor, motor and electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123401110.3U CN216851474U (en) | 2021-12-30 | 2021-12-30 | Motor rotor, motor and electric automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216851474U true CN216851474U (en) | 2022-06-28 |
Family
ID=82112682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123401110.3U Active CN216851474U (en) | 2021-12-30 | 2021-12-30 | Motor rotor, motor and electric automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216851474U (en) |
-
2021
- 2021-12-30 CN CN202123401110.3U patent/CN216851474U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20140175932A1 (en) | Motor and rotor thereof | |
| CN211606216U (en) | Built-in permanent magnet synchronous motor with auxiliary groove formed in outer surface of rotor | |
| EP2538523A1 (en) | Rotor and dynamo-electric machine using the rotor | |
| CN113489189A (en) | Permanent magnet motor rotor punching sheet for vehicle and oblique pole structure thereof | |
| CN216851474U (en) | Motor rotor, motor and electric automobile | |
| CN111725914A (en) | Reluctance type high-efficiency large-torque high-speed motor | |
| CN110571955B (en) | Motor rotor and synchronous reluctance motor | |
| CN210629214U (en) | Rotor structure and permanent magnet synchronous motor | |
| CN210724356U (en) | Rotor of motor, driving motor and vehicle | |
| CN210201572U (en) | Rotor structure and rotor assembly of surface-mounted permanent magnet synchronous motor | |
| CN215772705U (en) | Permanent magnet motor rotor punching sheet for vehicle and oblique pole structure thereof | |
| CN217984682U (en) | Stator and rotor core structure for permanent magnet synchronous motor | |
| CN114374284A (en) | Motor rotor, motor and electric automobile | |
| CN110957830A (en) | Motor rotor, reluctance motor and electric automobile | |
| CN213990323U (en) | Rotary motor rotor and motor | |
| CN212366955U (en) | Reluctance type high-efficiency large-torque high-speed motor | |
| CN112968557B (en) | Motor rotor, motor, car | |
| CN113315283A (en) | Rotor, motor and automobile | |
| JP2000253633A (en) | Rotating machine | |
| CN112615452A (en) | Rotary motor rotor and motor | |
| CN112910133A (en) | Motor rotor, motor, car | |
| CN215580598U (en) | Rotor, motor and automobile | |
| CN205195523U (en) | Permanent magnet synchronous motor and have its electric automobile | |
| CN217741408U (en) | Rotor punching sheet of permanent magnet synchronous motor, rotor and motor | |
| CN113541350B (en) | Square wave rotor designed based on inner rotor iron core eccentric structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |