Motor rotor and motor
By rationally laying out magnetic steel in the motor and converting the asynchronous motor into a synchronous motor, the high energy consumption problem of the motor is solved, energy consumption reduction and cost savings are achieved, and it is suitable for old motor modification and new motor production.
Patent Information
- Application Number
- CN202421030356.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-13
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-13
AI Technical Summary
Existing motors have high energy consumption problems and a method is needed to reduce the power consumption of the motor to avoid shutdowns and increase the mileage of the electric vehicle.
By rationally laying out the structure of the magnetic steel, the asynchronous motor is converted into a synchronous motor, four first magnetic steels are arranged in square shapes, and a partition area is set at their connections, and the second magnetic steel is set on the outside, and the partition area is V-shaped. The first and second magnetic steels penetrate the rotor core axially and space distances are provided in appropriate positions to form a low-cost motor rotor.
The modification of old motors and the production of new motors have been achieved, energy consumption has been reduced, the power consumption of key production lines and commercial vehicles can be reduced by more than 10%, and the permanent magnet cost of the motor factory can be saved by more than 30%.
Smart Images
Figure CN222282888U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of motors, in particular to a motor rotor and a motor. Background Art
[0002] See also Figure 1 As shown, the existing motor has the problem of high energy consumption. Therefore, how to solve the above problem is a technical problem that technicians in this field need to solve urgently. Utility Model Content
[0003] In view of the defects existing in the prior art, the purpose of the utility model is to provide a motor rotor and a motor. The utility model converts an asynchronous motor into a synchronous motor by rationally arranging the structure of the magnetic steel to minimize the cost. This technology can not only convert old motors, but also produce new motors.
[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is: a motor rotor, including a rotor core and a rotating shaft, four first magnetic steels are arranged on the rotor core around the rotating shaft, the four first magnetic steels are arranged in a square, and a separation area is provided at the connection between each two adjacent first magnetic steels; second magnetic steels are respectively provided on the outer sides of the four separation areas.
[0005] A further improvement is that the four second magnetic steels are arranged opposite to each other in pairs and are respectively located on the extended lines of the diagonals of the square formed by the four first magnetic steels.
[0006] A further improvement is that the separation area has a V-shaped structure.
[0007] A further improvement is that: the first magnetic steel penetrates the rotor core axially, and both ends of the first magnetic steel are flush with the rotor core.
[0008] A further improvement is that the second magnetic steel penetrates the rotor core in the axial direction, and both ends of the second magnetic steel are flush with the rotor core.
[0009] A further improvement is that the inner end of the second magnetic steel is connected to the corresponding separation area, and the outer end of the second magnetic steel has a first spacing distance from the edge of the rotor core.
[0010] A further improvement is that: the first magnetic steel has a second spacing distance from the rotating shaft.
[0011] A further improvement is that the rotor core is formed by stacking silicon steel sheets.
[0012] The utility model also provides a motor, comprising a motor stator and the motor rotor as described above, wherein the motor rotor is rotatably mounted in a receiving cavity of the motor stator.
[0013] A further improvement is that the motor stator includes a stator core and a stator winding.
[0014] The beneficial effects of the utility model are:
[0015] The use of this utility model can reduce the number of shutdowns of key production lines and key production equipment due to motor burning to zero, and high-energy-consuming equipment can save more than 10% of electricity. The use of this patent in commercial and passenger vehicles can increase the mileage of electric vehicles by more than 10%, and motor factories can save more than 30% of permanent magnet costs by using this patent to produce motors.
[0016] The utility model converts an asynchronous motor into a synchronous motor to minimize the cost by reasonably arranging the structure of the magnetic steel. The technology can not only convert old motors, but also produce new motors. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a structural schematic diagram of a motor in the prior art;
[0018] Figure 2 This is a schematic diagram of the structure of the motor rotor in the embodiment of the utility model;
[0019] Figure 3 A three-dimensional diagram of a motor in an embodiment of the utility model;
[0020] Figure 4 This is a front view of the motor in the embodiment of the utility model;
[0021] Figure 5 It is a cross-sectional view of the motor in the embodiment of the utility model;
[0022] Figure 6 The winding diagram of the motor in the embodiment of the utility model is shown;
[0023] Figure 7 It is a magnetic flux density distribution cloud diagram of the motor in the embodiment of the utility model;
[0024] Figure 8 It is a vector magnetic potential cloud diagram of the motor in the embodiment of the utility model;
[0025] Fig. 9 It is a current density cloud diagram of the motor in the embodiment of the utility model.
[0026] Reference numerals:
[0027] 1-motor rotor; 11-rotor core; 12-rotating shaft; 13-first magnetic steel; 14-separation area; 15-second magnetic steel; 16-first spacing distance; 17-second spacing distance; 2-motor stator; 21-statator core; 22-stator winding. DETAILED DESCRIPTION
[0028] The embodiments of the present invention are described in detail below. The embodiments are shown in the accompanying drawings, wherein the same or similar numbers throughout represent the same or similar elements or elements with the same or similar functions.
[0029] In the description of the present invention, it should be noted that directional words, such as the terms "center", "lateral (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of narrating 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 cannot be understood as limiting the specific protection scope of the present invention.
[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the definition of "first" and "second" features can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "several" and "a number" is two or more, unless otherwise clearly and specifically defined.
[0031] The following is a further description of the specific implementation of the utility model in conjunction with the drawings of the specification, so that the technical solution and its beneficial effects of the utility model are clearer and more explicit. The following description of the embodiments with reference to the drawings is exemplary and intended to explain the utility model, but cannot be understood as limiting the utility model.
[0032] See also Figure 2 As shown, an embodiment of the utility model provides a motor rotor, including a rotor core 11 and a rotating shaft 12, wherein the rotor core 11 is formed by stacking silicon steel sheets. Four first magnetic steels 13 are arranged around the rotating shaft 12 on the rotor core 11, and the four first magnetic steels 13 are arranged in a square shape, and a separation zone 14 is arranged at the connection between each two adjacent first magnetic steels 13; second magnetic steels are respectively arranged on the outside of the four separation zones 14. Specifically, the four second magnetic steels are arranged opposite to each other in pairs and are respectively located on the extended lines of the diagonals of the squares formed by the four first magnetic steels 13. The separation zone 14 is a V-shaped structure. The first magnetic steel 13 penetrates the rotor core 11 axially, and the two ends of the first magnetic steel 13 are flush with the rotor core 11. The second magnetic steel penetrates the rotor core 11 axially, and the two ends of the second magnetic steel are flush with the rotor core 11. The inner end of the second magnetic steel is connected to the corresponding separation zone 14, and the outer end of the second magnetic steel has a first spacing distance 16 with the edge of the rotor core 11. A second spacing distance 17 is formed between the first magnetic steel 13 and the rotating shaft 12 .
[0033] See also Figure 3-Figure 5 As shown, the utility model further provides a motor, including a motor stator 2, and also including the motor rotor 1 as described above, the motor rotor 1 is rotatably mounted in the accommodating cavity of the motor stator 2. Specifically, the motor stator 2 includes a stator core 21 and a stator winding 22.
[0034] See also Figure 6-Figure 9 As shown, the use of this utility model can reduce the number of shutdowns of key production lines and key production equipment due to burning motors to zero, high-energy-consuming equipment can save more than 10% of electricity, the use of this patent in commercial and passenger vehicles can increase the mileage of electric vehicles by more than 10%, and motor factories using this patent to produce motors can save more than 30% of permanent magnet costs.
[0035] The utility model converts an asynchronous motor into a synchronous motor to minimize the cost by reasonably arranging the structure of the magnetic steel. The technology can not only convert old motors, but also produce new motors.
[0036] In the description of the specification, the description with reference to the terms "one embodiment", "preferably", "example", "specific example" or "some examples" means 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 utility model, and the schematic expressions of the above terms in this specification do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.
[0037] Through the description of the above structure and principle, technicians in the relevant technical field should understand that the present invention is not limited to the above-mentioned specific implementation methods. Improvements and substitutions based on the present invention using the known technology in the field all fall within the protection scope of the present invention and should be defined by the claims.
Claims
1. A motor rotor, comprising a rotor core (11) and a rotating shaft (12), characterized in that: Four first magnetic steels (13) are arranged around the rotating shaft (12) on the rotor core (11); the four first magnetic steels (13) are arranged in a square, and a separation area (14) is provided at the connection between each two adjacent first magnetic steels (13); and second magnetic steels are respectively provided on the outer sides of the four separation areas (14).
2. The motor rotor according to claim 1, characterized in that: The four second magnetic steels are arranged opposite to each other in pairs and are respectively located on the extended lines of the diagonals of the square formed by the four first magnetic steels (13).
3. The motor rotor according to claim 1, characterized in that: The separation area (14) is in a V-shaped structure.
4. The motor rotor according to claim 1, characterized in that: The first magnetic steel (13) penetrates the rotor core (11) in the axial direction, and two ends of the first magnetic steel (13) are flush with the rotor core (11).
5. The motor rotor according to claim 1, characterized in that: The second magnetic steel penetrates the rotor core (11) in the axial direction, and two ends of the second magnetic steel are flush with the rotor core (11).
6. The motor rotor according to claim 1, characterized in that: The inner end of the second magnetic steel is connected to the corresponding separation area (14), and the outer end of the second magnetic steel has a first spacing distance (16) from the edge of the rotor core (11).
7. The motor rotor according to claim 1, characterized in that: The first magnetic steel (13) and the rotating shaft (12) have a second spacing distance (17).
8. The motor rotor according to claim 1, characterized in that: The rotor core (11) is formed by laminating silicon steel sheets.
9. A motor, comprising a motor stator (2), characterized in that: It also comprises a motor rotor (1) as claimed in any one of claims 1 to 8, wherein the motor rotor (1) is rotatably mounted in the accommodating cavity of the motor stator (2).
10. The motor according to claim 9, characterized in that: The motor stator (2) comprises a stator core (21) and a stator winding (22).