High-reluctance permanent magnet synchronous rotor structure of new energy automobile driving motor

Abstract

The utility model relates to the field of high-magnetic-resistance permanent magnet synchronous rotors, and discloses a high-magnetic-resistance permanent magnet synchronous rotor structure of a new energy automobile driving motor, which comprises an outer shell and a magnet, and is characterized in that the inner wall of the outer shell is rotatably provided with a rotating shaft, and the surface of the rotating shaft is fixedly connected with a plurality of rotor iron cores; the center of the rotor core and the center of the rotating shaft are located on the same straight line, the two ends of the magnet are provided with electromagnetic blocks, the surfaces of the electromagnetic blocks are connected with a connecting frame in a clamped mode, one end of the connecting frame is fixedly installed on the inner wall of the outer shell, and the surface of the magnet is fixedly connected with the inner wall of the rotating shaft; according to the invention, the magnet is installed on the surface of the rotating shaft, the two ends of the magnet are provided with the electromagnetic blocks, and the electromagnetic blocks are installed on the inner wall of the housing through the connecting frame, so that after the rotating shaft stops rotating, the electromagnetic blocks are electrified to generate magnetic force to attract one end of the magnet on the surface of the rotating shaft, thereby reducing the rotation speed of the rotor core. The stopping speed of the rotating shaft is effectively accelerated.

Description

Technical Field

[0001] The present application relates to the field of high reluctance permanent magnet synchronous rotors, and in particular to a high reluctance permanent magnet synchronous rotor structure for a new energy vehicle drive motor. Background Art

[0002] Permanent magnet synchronous motors are mainly composed of various components such as rotors, end covers and stators. The stator structure of permanent magnet synchronous motors is very similar to that of ordinary induction motors. The biggest difference between the rotor structure and that of asynchronous motors is that high-quality permanent magnet poles are placed on the rotor. According to the different positions of the permanent magnets on the rotor, permanent magnet synchronous motors are usually divided into surface rotor structures and built-in rotor structures. Permanent magnet synchronous rotors are often used for motor drives in new energy vehicles. When installing conventional permanent magnet synchronous rotors, the rotor core is installed on the inner wall of the outer casing. The rotor core controls the rotation of the shaft with the help of the magnetic field generated by the winding current.

[0003] With respect to the above-mentioned related technologies, the inventors believe that after the conventional rotor structure stops rotating at high speed, the shaft will often rotate for a period of time due to inertia. The conventional method of stopping by physical friction can easily cause wear between the accessories after long-term use, making it difficult for the worn accessories to function effectively.

[0004] The above information disclosed in the background technology is only used to increase the understanding of the background technology of the present application, and therefore, it may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0005] In order to solve the problem of easy wear of conventional shaft stop structure accessories, the present application provides a high magnetic resistance permanent magnet synchronous rotor structure for a new energy vehicle drive motor.

[0006] The high reluctance permanent magnet synchronous rotor structure of a new energy vehicle drive motor provided in this application adopts the following technical solution:

[0007] A high magnetic resistance permanent magnet synchronous rotor structure for a new energy vehicle drive motor comprises an outer shell and a magnet, and is characterized in that: a rotating shaft is rotatably mounted on the inner wall of the outer shell, a plurality of rotor cores are fixedly connected to the surface of the rotating shaft, the center of the rotor core and the center of the rotating shaft are on the same straight line, electromagnetic blocks are provided at both ends of the magnet, a connecting frame is clamped on the surface of the electromagnetic block, one end of the connecting frame is fixedly mounted on the inner wall of the outer shell, the surface of the magnet is fixedly connected to the inner wall of the rotating shaft, the magnet and the rotating shaft are arranged perpendicular to each other, and the two electromagnetic blocks are symmetrically distributed with the magnet as the axis.

[0008] Preferably, a fixing frame is fixedly mounted on one end of the electromagnetic block, a limiting block is clamped on the surface of the fixing frame, and one end of the limiting block is fixedly connected to the inner wall of the connecting frame.

[0009] Preferably, a shielding plate is clamped on the inner wall of the outer shell, the size of the surface of the shielding plate is matched with the size of the inner wall of the outer shell, and the shielding plate is a molybdenum alloy steel plate.

[0010] Preferably, one end of the baffle plate is movably connected to a limiting frame, the surface of the limiting frame is welded to the inner wall of the shell, the end of the baffle plate away from the limiting frame is clamped with a mounting frame, the inner wall of the mounting frame is clamped with a fixing bolt, and one end of the fixing bolt is fixedly connected to the surface of the limiting frame.

[0011] Preferably, a bearing is fixedly mounted on the inner wall of the shielding plate, the inner wall of the bearing is rotatably connected to the surface of the rotating shaft, and the center of the bearing is on the same straight line as the center of the rotating shaft.

[0012] In summary, this application includes the following beneficial technical effects:

[0013] 1. By installing the magnet on the surface of the rotating shaft, both ends of the magnet are provided with electromagnetic blocks, and the electromagnetic blocks are installed on the inner wall of the outer shell with the help of a connecting frame, so that after the rotating shaft stops rotating, the electromagnetic block generates magnetic force after being energized and adsorbs one end of the magnet on the surface of the rotating shaft, thereby reducing the speed of the rotation of the rotor core, effectively accelerating the stopping speed of the rotating shaft, and a fixing frame is installed at one end of the electromagnetic block, and the surface of the fixing frame is clamped with a limit block, and one end of the limit block is fixedly installed with the inner wall of the connecting frame, so that the electromagnetic block can be installed in the outer shell with the help of the limit block and the fixing frame, and it is convenient to install and disassemble, and it is more convenient during maintenance. A shielding plate made of molybdenum alloy steel is installed on the inner wall of the outer shell, so that the shielding plate can prevent the effect of the magnetic field by the molybdenum alloy steel material, thereby avoiding the influence of the magnet and the electromagnetic block on the magnetic field around the rotor core, resulting in a poor use effect of the drive motor; compared with the prior art, the deceleration effect of the drive motor is effectively improved;

[0014] 2. The limit frame can also be installed on the inner wall of the outer shell, and the surface of the limit frame is installed with fixing bolts, and the surface of the fixing bolts is clamped with a mounting frame, so that the baffle plate can be installed on the inner wall of the outer shell, which is convenient for disassembly of the outer shell and more convenient for maintenance. The bearing is installed on the inner wall of the baffle plate, and the inner wall of the bearing is connected to the surface of the rotating shaft, so that the friction between the baffle plate and the rotating shaft can be reduced with the help of the bearing to avoid affecting the rotation of the rotating shaft; the use effect of the device is effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of a high reluctance permanent magnet synchronous rotor structure of a new energy vehicle drive motor according to an embodiment of the application;

[0016] Figure 2 is a schematic diagram of a magnet structure of an embodiment of the application;

[0017] Figure 3 is a side view schematic diagram of the structure of an embodiment of the application;

[0018] Figure 4 It is a schematic diagram of the structure at location A of an embodiment of the application.

[0019] Explanation of the accompanying drawings: 1. outer shell; 2. rotor core; 3. rotating shaft; 4. magnet; 5. electromagnetic block; 6. connecting frame; 7. limit block; 8. fixing frame; 9. shielding plate; 10. bearing; 11. limit frame; 12. mounting frame; 13. fixing bolt. DETAILED DESCRIPTION

[0020] The following is combined with Figure 1 —4 Provide further details of this application.

[0021] The present application discloses a high reluctance permanent magnet synchronous rotor structure of a new energy vehicle drive motor, referring to Figure 1 - Figure 2 , including an outer shell 1. During installation, a rotor core 2 is installed on the inner wall of the outer shell 1. The rotor core 2 controls the rotation of a shaft 3 by means of a magnetic field generated by a winding current. A magnet 4 is installed on the surface of the shaft 3. Electromagnetic blocks 5 are provided at both ends of the magnet 4. A connecting frame 6 is installed on the surface of the electromagnetic block 5. The surface of the connecting frame 6 is installed on the inner wall of the outer shell 1. After the shaft 3 stops rotating, the electromagnetic block 5 is energized to generate a magnetic force to adsorb one end of the magnet 4 on the surface of the shaft 3, thereby reducing the rotation speed of the rotor core 2, effectively accelerating the stopping speed of the shaft 3, and avoiding wear on the shaft 3.

[0022] Reference Figure 2 A fixing frame 8 is installed at one end of the electromagnetic block 5, and a limiting block 7 is clamped on the surface of the fixing frame 8. One end of the limiting block 7 is fixedly installed with the inner wall of the connecting frame 6. The electromagnetic block 5 is installed in the outer shell 1 with the help of the limiting block 7 and the fixing frame 8, and the fixing frame 8 and the limiting block 7 can be released by pressing one end of the fixing frame 8, which is convenient for installing and disassembling the electromagnetic block 5, and is more convenient when inspecting the inner wall of the drive motor. A shielding plate 9 made of molybdenum alloy steel is installed on the inner wall of the outer shell 1. The shielding plate 9 made of molybdenum alloy steel can prevent the effect of the magnetic field, thereby avoiding the influence of the magnet 4 and the electromagnetic block 5 on the magnetic field around the rotor core 2, resulting in poor use of the drive motor.

[0023] Reference Figure 3 - Figure 4, install the limit frame 11 on the inner wall of the outer shell 1, and the surface of the limit frame 11 is installed with a fixing bolt 13, and the surface of the fixing bolt 13 is clamped with a mounting frame 12, and the baffle plate 9 is installed between the limit frame 11 and the mounting frame 12. With the help of the limit frame 11 and the mounting frame 12, the baffle plate 9 is installed on the inner wall of the outer shell 1, and the mounting frame 12 is removed after the fixing bolt 13 is removed, so as to facilitate the disassembly of the outer shell 1, which is more convenient during maintenance, and the bearing 10 is installed on the inner wall of the baffle plate 9. The inner wall of the bearing 10 is rotatably connected to the surface of the rotating shaft 3. With the help of the bearing 10, the friction between the baffle plate 9 and the rotating shaft 3 is reduced, so as to avoid the baffle plate 9 affecting the rotation of the rotating shaft 3 after installation.

[0024] The implementation principle of a high magnetic resistance permanent magnet synchronous rotor structure of a new energy vehicle drive motor in the embodiment of the present application is as follows: by installing a magnet 4 on the surface of a rotating shaft 3, both ends of the magnet 4 are provided with an electromagnetic block 5, and the electromagnetic block 5 is installed on the inner wall of the outer shell 1 with the help of a connecting frame 6, so that after the rotating shaft 3 stops rotating, the electromagnetic block 5 is energized to generate a magnetic force and adsorb one end of the magnet 4 on the surface of the rotating shaft 3, thereby reducing the rotation speed of the rotor core 2, and effectively accelerating the stopping speed of the rotating shaft 3. A fixing frame 8 is installed at one end of the electromagnetic block 5, and a limiting block 7 is clamped on the surface of the fixing frame 8. One end of the limiting block 7 is fixedly installed with the inner wall of the connecting frame 6, so that the electromagnetic block 5 can be installed in the outer shell 1 with the help of the limiting block 7 and the fixing frame 8, and it is convenient to install and disassemble, and it is more convenient during maintenance. A shielding plate 9 made of molybdenum alloy steel is installed on the inner wall of the outer shell 1, so that the shielding plate 9 can prevent the magnetic field with the help of the molybdenum alloy steel material, thereby avoiding the influence of the magnet 4 and the electromagnetic block 5 on the magnetic field around the rotor core 2, resulting in a poor use effect of the drive motor.

[0025] The limit frame 11 can also be installed on the inner wall of the outer shell 1, and the surface of the limit frame 11 is installed with a fixing bolt 13, and the surface of the fixing bolt 13 is clamped with a mounting frame 12, so that the baffle plate 9 can be installed on the inner wall of the outer shell 1, which is convenient for disassembly of the outer shell 1 and more convenient during maintenance. The bearing 10 is installed on the inner wall of the baffle plate 9, and the inner wall of the bearing 10 is connected to the surface of the rotating shaft 3, so that the friction between the baffle plate 9 and the rotating shaft 3 can be reduced with the help of the bearing 10 to avoid affecting the rotation of the rotating shaft 3.

[0026] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A high reluctance permanent magnet synchronous rotor structure for a new energy vehicle drive motor, comprising an outer shell (1) and a magnet (4), characterized in that: A rotating shaft (3) is rotatably mounted on the inner wall of the outer shell (1); a plurality of rotor cores (2) are fixedly connected to the surface of the rotating shaft (3); the center of the rotor core (2) and the center of the rotating shaft (3) are on the same straight line; electromagnetic blocks (5) are provided at both ends of the magnet (4); a connecting frame (6) is clamped on the surface of the electromagnetic block (5); and one end of the connecting frame (6) is fixedly mounted on the inner wall of the outer shell (1).

2. The high reluctance permanent magnet synchronous rotor structure of the new energy vehicle drive motor according to claim 1, characterized in that: The surface of the magnet (4) is fixedly connected to the inner wall of the rotating shaft (3), and the magnet (4) and the rotating shaft (3) are arranged perpendicular to each other. The two electromagnetic blocks (5) are symmetrically distributed with the magnet (4) as the axis.

3. The high reluctance permanent magnet synchronous rotor structure of a new energy vehicle drive motor according to claim 1, characterized in that: A fixing frame (8) is fixedly mounted on one end of the electromagnetic block (5); a limit block (7) is clamped on the surface of the fixing frame (8); and one end of the limit block (7) is fixedly connected to the inner wall of the connecting frame (6).

4. The high reluctance permanent magnet synchronous rotor structure of a new energy vehicle drive motor according to claim 1, characterized in that: The inner wall of the outer shell (1) is clamped with a shielding plate (9), the size of the surface of the shielding plate (9) is compatible with the size of the inner wall of the outer shell (1), and the shielding plate (9) is a molybdenum alloy steel plate.

5. The high reluctance permanent magnet synchronous rotor structure of the new energy vehicle drive motor according to claim 4, characterized in that: One end of the shielding plate (9) is movably connected to a limiting frame (11), the surface of the limiting frame (11) is welded to the inner wall of the outer shell (1), one end of the shielding plate (9) away from the limiting frame (11) is clamped with a mounting frame (12), the inner wall of the mounting frame (12) is clamped with a fixing bolt (13), and one end of the fixing bolt (13) is fixedly connected to the surface of the limiting frame (11).

6. The high reluctance permanent magnet synchronous rotor structure of the new energy vehicle drive motor according to claim 4, characterized in that: A bearing (10) is fixedly mounted on the inner wall of the shielding plate (9), the inner wall of the bearing (10) is rotatably connected to the surface of the rotating shaft (3), and the center of the bearing (10) is on the same straight line as the center of the rotating shaft (3).

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