Permanent magnet motor with inertia flywheel

Abstract

The utility model discloses a permanent magnet motor with an inertia flywheel, which comprises a stator, a rotor and an inertia flywheel, the stator is movably connected with the rotor through a first bearing, and the rotor is arranged on the periphery of the stator and is concentric with the stator. The inertia flywheel is sleeved on the outer ring of the rotor through a second bearing to form a movable connection structure, and the inertia flywheel and the rotor are concentrically arranged; a plurality of first permanent magnets are distributed on the inner ring of the inertia flywheel in an annular array mode, the magnetic poles of every two adjacent first permanent magnets are opposite, and the magnetic pole direction of each first permanent magnet points to the circle center of the inertia flywheel. A plurality of second permanent magnets are distributed on the outer ring of the rotor in an annular array mode, the magnetic poles of every two adjacent second permanent magnets are opposite, and the magnetic pole direction of each second permanent magnet points to the circle center of the rotor. According to the utility model, the practicability is improved, the energy is saved, the efficiency is improved, the comprehensive use efficiency of the motor under different working conditions is obviously improved, the practicability is enhanced, and the energy consumption is effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, specifically to a permanent magnet motor with a built-in inertial flywheel. Background Technology

[0002] Permanent magnet motors are the power source for new energy electric vehicles. Currently, the efficiency of permanent magnet motors in new energy electric vehicles is relatively high, but this is only the result of testing under specific conditions. In actual use, the motor power must be designed to be several times greater to meet the torque requirements of the motor under different road conditions. This not only increases costs but also increases no-load current and significantly reduces operating efficiency.

[0003] In view of this, it is necessary to improve the structure of existing permanent magnet motors. Utility Model Content

[0004] To address the shortcomings of existing technologies, the present invention aims to provide a permanent magnet motor with an integrated inertial flywheel. The purpose of designing this permanent magnet motor is to significantly improve the performance of electric vehicles.

[0005] To solve the above technical problems, the present invention achieves this through the following solution: The present invention provides a permanent magnet motor with a built-in inertial flywheel, comprising a stator and a rotor, wherein the stator and the rotor are movably connected by a first bearing, the rotor is disposed on the periphery of the stator and is concentric, and the permanent magnet motor further comprises an inertial flywheel, which is sleeved on the outer ring of the rotor through a second bearing to form a movable connection structure, and the inertial flywheel is concentrically arranged with the rotor;

[0006] The inner ring array of the inertial flywheel has a number of first permanent magnets distributed therein, and the magnetic poles of two adjacent first permanent magnets are opposite. The magnetic poles of each first permanent magnet point towards the center of the inertial flywheel.

[0007] The outer ring array of the rotor has a number of second permanent magnets distributed therein, and the magnetic poles of two adjacent second permanent magnets are opposite, with the magnetic poles of each second permanent magnet pointing towards the center of the rotor.

[0008] Furthermore, there are two of the first bearings;

[0009] The inner rings of the two first bearings are respectively fitted onto the two protruding posts on the stator;

[0010] The outer rings of both first bearings are fixed to the inner wall of the rotor.

[0011] Furthermore, annular grooves for fixing the second bearing are formed on both sides of the inertial flywheel and the rotor;

[0012] The second bearing is provided in two parts;

[0013] Two second bearings are fixed to two annular grooves respectively, so that the inner ring of the second bearing is fixed to the rotor and the outer ring of the second bearing is fixed to the inner wall of the inertial flywheel.

[0014] Furthermore, the stator housing has a ring array of several coil windings distributed on it.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. Improved practicality and energy efficiency of this utility model: It significantly improves the overall efficiency of the motor under different working conditions, enhances its practicality, and effectively reduces energy consumption.

[0017] 2. The power configuration of the permanent magnet motor of this utility model is optimized: the maximum output torque of the motor is greatly improved. In practical application design, the power configuration can be reduced by 50%, effectively reducing costs.

[0018] 3. This utility model organically combines an external rotor permanent magnet motor with a magnetically driven inertial flywheel, significantly improving the performance of electric vehicles. Furthermore, the magnetically driven inertial flywheel can also be used independently; it achieves energy transfer through the mutual conversion of magnetic potential energy and kinetic energy, resulting in minimal energy loss. Attached Figure Description

[0019] Figure 1 This is a structural diagram of the permanent magnet motor of this utility model.

[0020] Figure 2 This is a cross-sectional structural diagram of the permanent magnet motor of this utility model.

[0021] The following are labels in the attached diagram: Stator 1, Rotor 2, Inertia Flywheel 3, First Bearing 4, Second Bearing 5, Coil Winding 6. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments, so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present utility model. Obviously, the embodiments described in this utility model are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0024] Example 1: The specific structure of this utility model is as follows:

[0025] Please refer to the appendix. Figure 1-2 This utility model discloses a permanent magnet motor with a built-in inertial flywheel, including a stator 1 and a rotor 2. The stator 1 and the rotor 2 are movably connected by a first bearing 4. The rotor 2 is located on the periphery of the stator 1 and is concentric. The permanent magnet motor also includes an inertial flywheel 3, which is sleeved on the outer ring of the rotor 2 through a second bearing 5 to form a movable connection structure. The inertial flywheel 3 and the rotor 2 are concentrically arranged.

[0026] The inner ring array of the inertial flywheel 3 has a number of first permanent magnets 7 distributed therein, and the magnetic poles of two adjacent first permanent magnets 7 are opposite, with the magnetic poles of each first permanent magnet 7 pointing towards the center of the inertial flywheel 3.

[0027] The outer ring array of the rotor 2 has a plurality of second permanent magnets distributed therein, with the magnetic poles of two adjacent second permanent magnets being opposite, and the magnetic poles of each second permanent magnet pointing towards the center of the rotor 2. The plurality of first permanent magnets 7 and the plurality of second permanent magnets are equal in number, and the rotation of the inertial flywheel 3 is achieved through magnetic force transmission.

[0028] There are two first bearings 4; the inner rings of the two first bearings 4 are respectively fitted onto the two protruding posts on the stator 1; the outer rings of the two first bearings 4 are fixed to the inner wall of the rotor 2.

[0029] The inertial flywheel 3 and the rotor 2 have annular grooves formed on both sides to fix the second bearing 5; there are two second bearings 5; the two second bearings 5 ​​are respectively fixed in the two annular grooves, so that the inner ring of the second bearing 5 is fixed to the rotor 2, and the outer ring of the second bearing 5 is fixed to the inner wall of the inertial flywheel 3.

[0030] The stator 1 has several coil windings 6 arranged in a ring array on its housing. When the coil windings 6 are energized, they can generate a magnetic field, which drives the rotor 2 to rotate.

[0031] Example 2:

[0032] The transmission between rotor 2 and inertial flywheel 3 can be categorized into the following types:

[0033] 1. When the permanent magnet on the rotor is synchronized with the permanent magnet in the inertial flywheel, their magnetic lines of force are superimposed.

[0034] 2. When the external resistance increases, the inertial flywheel 3 shares more than 50% of the resistance, which increases the peak output torque of the motor and reduces the current increment.

[0035] 3. When the external resistance decreases, the inertial flywheel 3 absorbs excess electromagnetic energy and converts it into inertial kinetic energy for storage.

[0036] 4. When the rotor 2 suddenly jams, the inertial flywheel 3 absorbs a large amount of electromagnetic energy and generates a reverse electromotive force on the stator to reduce the current.

[0037] 5. When the inertial flywheel 3 rotates at high speed, it does not stop when the rotor 2 stops, and it can help reduce the starting current when the motor restarts.

[0038] Based on the above-mentioned factors, the working principle and significant advantages of this utility model are as follows:

[0039] Precise start-up and load control: By precisely adjusting the magnetic field strength of the permanent magnet, the load increment during motor start-up can be effectively controlled. Once the inertial flywheel 3 reaches its peak speed, its energy consumption is negligible.

[0040] High-efficiency energy conversion and output: The permanent magnets within rotor 2 and inertial flywheel 3 correspond to each other. When they operate synchronously, the magnetic lines of force superimpose, greatly promoting the conversion of electrical energy into kinetic energy. Regarding kinetic energy output, when external resistance increases, ordinary motors must bear all the resistance alone, while the inertial flywheel of this invention can share more than 50% of the resistance, significantly increasing the peak output torque of the motor while reducing the current increment. When external resistance decreases, the inertial flywheel can absorb excess electromagnetic energy and convert it into inertial kinetic energy for storage, achieving both energy saving and reducing electromagnetic interference.

[0041] Reliable protection mechanism: In the event of a sudden rotor jamming due to special circumstances, the inertial flywheel can absorb a large amount of electromagnetic energy and generate a back electromotive force on the stator, significantly reducing the current and thus providing good protection for the motor and power supply. Furthermore, the high-speed rotating inertial flywheel 3 will not stop immediately when the rotor stops; when the motor restarts, it can help reduce the starting current and significantly improve the overall efficiency of the motor.

[0042] In summary, this invention enhances practicality and energy efficiency by significantly improving the overall efficiency of the motor under different operating conditions, thereby increasing its usability and effectively reducing energy consumption. Furthermore, the optimized power configuration of the permanent magnet motor in this invention substantially increases the maximum output torque of the motor. In practical applications, the power configuration can be reduced by 50%, effectively lowering costs.

[0043] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the contents of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A permanent magnet motor with an inertial flywheel, comprising a stator (1) and a rotor (2), the stator (1) and the rotor (2) being movably connected by a first bearing (4), the rotor (2) being arranged on the periphery of the stator (1) and being concentric, characterized in that, The permanent magnet motor further comprises an inertia flywheel (3) which is sleeved on the outer ring of the rotor (2) through a second bearing (5) to form a movable connection structure, and the inertia flywheel (3) is arranged concentrically with the rotor (2); The inner ring of the inertia flywheel (3) is arranged in an array and distributed with a plurality of first permanent magnets (7), and the magnetic poles of two adjacent first permanent magnets (7) are opposite, and the magnetic pole direction of each first permanent magnet (7) points to the center of the inertia flywheel (3); The outer ring of the rotor (2) is arranged in an array and distributed with a plurality of second permanent magnets, and the magnetic poles of two adjacent second permanent magnets are opposite, and the magnetic pole direction of each second permanent magnet points to the center of the rotor (2).

2. The flywheel-equipped permanent magnet motor of claim 1, wherein, The first bearing (4) is provided with two; The inner rings of the two first bearings (4) are respectively sleeved on the two side protrusions of the stator (1); The outer rings of the two first bearings (4) are fixed with the inner wall of the rotor (2).

3. The flywheel-equipped permanent magnet motor of claim 1, wherein, The two sides of the inertia flywheel (3) and the rotor (2) are formed with ring grooves for fixing the second bearing (5); The second bearing (5) is provided with two; The two second bearings (5) are respectively fixed in the two ring grooves, so that the inner rings of the second bearings (5) are fixed with the rotor (2), and the outer rings of the second bearings (5) are fixed with the inner wall of the inertia flywheel (3).

4. The flywheel-equipped permanent magnet motor of claim 1, wherein, The shell of the stator (1) is arranged in an array and distributed with a plurality of coil windings (6).

Images