Permanent magnet motor magnet assembly for high-power low-energy-consumption unmanned aerial vehicle

Abstract

The utility model belongs to the technical field of magnet assemblies, and particularly relates to a permanent magnet motor magnet assembly for a high-power low-energy-consumption unmanned aerial vehicle, which comprises a stator iron core, a rotor iron core and a permanent magnet motor, and is characterized in that the magnet assemblies are assembled on the outer side wall of the rotor iron core and are distributed on the outer side wall of the rotor iron core in a circumferential array manner; a mounting groove is formed in the outer side wall of the rotor core, a fixing groove is formed in one end of the rotor core, a limiting block is arranged at one end of the rotor core, a bolt is connected to the outer side wall of the limiting block in a penetrating and threaded mode, and a sliding block is installed on the inner side wall of the magnet assembly. And the magnet assembly can be stably fixed in the mounting groove and connected to the outer side wall of the rotor iron core by matching the connection of the limiting block, the bolt and the rotor iron core. By means of the design, the installation process of the magnet assembly is simplified, and the tedious step that a specific clamp needs to be configured to keep the preset interval between the permanent magnets when glue is used for pasting is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of magnet component technology, specifically relating to a permanent magnet motor magnet component for high-power, low-energy-consumption drones. Background Technology

[0002] The magnet assembly is a key component of a permanent magnet motor, directly affecting its performance and application. The magnet assembly primarily consists of permanent magnets. Since permanent magnets are composed of magnets, they can also be called magnet assemblies. Permanent magnets are components that generate a constant magnetic field. They are arranged with specific polarities on the rotor core of the motor and interact with the rotating magnetic field generated by the stator core, thereby driving the motor to rotate. However, currently, permanent magnets are generally glued to the rotor core. Using glue requires specific clamps to maintain a predetermined spacing between the permanent magnets, increasing production complexity. Furthermore, during the operation of a permanent magnet synchronous linear motor, various unavoidable vibrations occur on the worktable, and the working environment may contain high temperatures and debris. These factors, including vibration, high temperatures, and debris, cause instability in the glue bonding strength, making it easy for permanent magnets to loosen or detach, thus affecting motor performance. Utility Model Content

[0003] The purpose of this invention is to provide a permanent magnet motor magnet assembly for high-power, low-energy-consumption drones. This addresses the problem that in existing technologies, permanent magnets and rotor cores are typically bonded together with adhesive. However, this requires specific clamps to maintain a predetermined spacing between the permanent magnets, increasing production complexity. Furthermore, during the operation of the permanent magnet synchronous linear motor, the worktable experiences unavoidable complex vibrations, and the working environment may contain high temperatures and debris. These factors cause instability in the adhesive bonding strength, making it easy for the permanent magnets to loosen and detach, thus affecting the motor's performance.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a permanent magnet motor magnet assembly for a high-power, low-energy-consumption UAV, comprising a stator core, a rotor core, and a permanent magnet motor. The stator core and rotor core are assembled inside the housing of the permanent magnet motor. A stator coil is wound around the outer wall of the surface of the stator core through an opening. A magnet assembly is assembled on the outer wall of the rotor core, and the magnet assembly is distributed in a circumferential array on the outer wall of the rotor core. An installation groove is formed on the outer wall of the rotor core, and a fixing groove is formed at one end of the rotor core. A limiting block is provided at one end of the rotor core, and a bolt is threaded through the outer wall of the limiting block. A sliding block is installed on the inner wall of the magnet assembly.

[0005] Preferably, for the permanent magnet motor magnet assembly for high-power and low-energy consumption unmanned aerial vehicles of the present utility model, the sliding block is adapted to the size of the installation groove. The installation groove and the sliding block are provided in a "convex" shape, and the number of installation grooves provided is the same as the number of magnet assemblies.

[0006] Preferably, for the permanent magnet motor magnet assembly for high-power and low-energy consumption unmanned aerial vehicles of the present utility model, the limiting block is annular and has the same size as the fixing groove. The length of the limiting block is the same as the depth of the fixing groove provided.

[0007] Preferably, for the permanent magnet motor magnet assembly for high-power and low-energy consumption unmanned aerial vehicles of the present utility model, the limiting block and the rotor core are detachably and fixedly connected by bolts.

[0008] Preferably, for the permanent magnet motor magnet assembly for high-power and low-energy consumption unmanned aerial vehicles of the present utility model, the sliding blocks are symmetrically connected to the inner side wall of the magnet assembly. The assembly position of the sliding block close to the limiting block is fitted to the back end surface of the limiting block.

[0009] Preferably, for the permanent magnet motor magnet assembly for high-power and low-energy consumption unmanned aerial vehicles of the present utility model, a heat-conducting pad is connected to the inner side wall of the magnet assembly, and heat dissipation holes are provided through the side wall of the magnet assembly.

[0010] Preferably, for the permanent magnet motor magnet assembly for high-power and low-energy consumption unmanned aerial vehicles of the present utility model, five groups of heat dissipation holes are provided and are equally spaced.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] By providing the installation groove and cooperating with the connection of the limiting block, bolts and the rotor core, the present utility model can firmly fix the magnet assembly in the installation groove and connect it to the outer side wall of the rotor core. This design simplifies the installation process of the magnet assembly and avoids the cumbersome steps of configuring specific fixtures to maintain a predetermined interval between permanent magnets when using glue for pasting. This installation method ensures that the magnet assembly will not loosen or fall off due to the influence of vibration, high temperature or debris during the operation of the permanent magnet motor, thus effectively avoiding the problem of performance degradation of the motor caused by unstable glue bonding strength. In addition, by applying the heat dissipation holes and the heat-conducting pad, the heat dissipation efficiency of the magnet assembly is significantly improved. This design helps to reduce the working temperature of the magnet assembly, effectively prevents performance degradation or failure caused by overheating, and further ensures the stable operation of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings are used to provide further understanding of the present utility model, and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model, and do not constitute a limitation to the present utility model. In the drawings:

[0014] Figure 1 Schematic diagram of the connection structure between the stator core and the rotor core of the present utility model;

[0015] Figure 2 Schematic diagram of the permanent magnet motor structure of the present utility model;

[0016] Figure 3 Schematic diagram of the rotor core structure of the present utility model;

[0017] Figure 4 Schematic diagram of the magnet assembly structure of the present utility model.

[0018] In the figure: 1, permanent magnet motor; 2, stator core; 3, rotor core; 4, stator coil; 5, magnet assembly; 6, installation groove; 7, fixing groove; 8, limiting block; 9, bolt; 10, sliding block; 11, heat-conducting pad; 12, heat dissipation hole. Specific implementation mode

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0020] Please refer to Figure 1-4 , the present utility model provides the following technical solutions: a magnet assembly for a high-power and low-energy-consuming unmanned aerial vehicle permanent magnet motor, including a stator core 2, a rotor core 3 and a permanent magnet motor 1. The stator core 2 and the rotor core 3 are assembled inside the housing of the permanent magnet motor 1. A stator coil 4 is wound around the outer side wall of the through-opening of the stator core 2. A magnet assembly 5 is assembled on the outer side wall of the rotor core 3. The magnet assemblies 5 are distributed in a circumferential array on the outer side wall of the rotor core 3. An installation groove 6 is provided on the outer side wall of the rotor core 3. A fixing groove 7 is provided at one end of the rotor core 3. A limiting block 8 is provided at one end of the rotor core 3. A bolt 9 is screwed through the outer side wall of the limiting block 8. A sliding block 10 is installed on the inner side wall of the magnet assembly 5.

[0021] Preferably in the embodiment: the sliding block 10 is adapted to the size of the installation groove 6. The installation groove 6 and the sliding block 10 are provided in a "convex" shape. The number of installation grooves 6 provided is the same as the number of magnet assemblies 5.

[0022] Preferably in the embodiment: the limiting block 8 is annular and has the same size as the fixing groove 7. The length of the limiting block 8 is the same as the depth of the fixing groove 7 provided.

[0023] In a preferred embodiment, the limiting block 8 is detachably and fixedly connected to the rotor core 3 by bolts 9.

[0024] In a preferred embodiment: the sliding block 10 is symmetrically connected to the inner sidewall of the magnet assembly 5, and the assembly position of the sliding block 10 near the limiting block 8 is in contact with the back end face of the limiting block 8.

[0025] In this embodiment, firstly, the rotor core 3 is assembled into the inner ring of the stator core 2, ensuring proper alignment between the two. The magnet assembly 5 is then placed in the gap between the rotor core 3 and the stator core 2 to form the magnetic field of the motor. The stator core 2, along with its internal rotor core 3 and magnet assembly 5, is integrally assembled into the housing of the permanent magnet motor 1. The above connection methods are all mature technologies already used in the assembly of permanent magnet motors 1, and therefore will not be elaborated further here. The magnet assembly 5 is also referred to as a permanent magnet. Next, the permanent magnet motor 1 is applied to a drone. The permanent magnet motor 1 is installed in the drone's power system, providing stable and efficient power support for the drone's flight through its high power and low energy consumption performance. The high power and low energy consumption performance of the permanent magnet motor 1 is also a mature existing technology, and therefore will not be elaborated further here.

[0026] Furthermore, when the magnet assembly 5 is connected to the rotor core 3, it is pushed into the mounting slot 6 at one end of the rotor core 3 via the sliding block 10. The number of mounting slots 6 is the same as the number of magnet assemblies 5, and they are evenly spaced on the outer wall of the rotor core 3, ensuring that the magnet assemblies 5 can be evenly distributed and connected. Subsequently, the limiting block 8 is pushed into the fixing slot 7 at one end of the rotor core 3. The back end face of the limiting block 8 is in close contact with the front end face of the sliding block 10, forming a fastening effect on the sliding block 10. Next, the bolt 9 is screwed into the outer wall of the rotor core 3 and connected to the limiting block 8, thus completing the assembly of the magnet assembly 5. This design significantly simplifies the installation process of the magnet assembly 5, avoiding the cumbersome steps required when using adhesive to maintain a predetermined spacing between permanent magnets using specific clamps. More importantly, this installation method ensures that the magnet assembly 5 will not loosen or fall off during the operation of the permanent magnet motor 1, even when exposed to vibration, high temperature, or debris. Therefore, the problem of motor performance degradation caused by unstable adhesive bonding strength is effectively avoided, and the overall stability and reliability of permanent magnet motor 1 are improved.

[0027] Example 2

[0028] Please see Figure 1-4 A heat-conducting pad 11 is connected to the inner side wall of the magnet assembly 5, and a heat dissipation hole 12 is provided through the side wall of the magnet assembly 5.

[0029] In a preferred embodiment, the heat dissipation holes 12 are provided in five groups and are distributed at equal intervals.

[0030] In this embodiment, a heat-conducting pad 11 is connected to the inner sidewall of the magnet assembly 5, which can improve the heat dissipation efficiency of the magnet assembly 5. A heat dissipation hole 12 is also provided through the sidewall of the magnet assembly 5, which can also improve the heat dissipation efficiency of the magnet assembly 5. This design helps to reduce the operating temperature of the magnet assembly 5, effectively prevents performance degradation or failure due to overheating, and further ensures the stable operation of the motor.

[0031] Furthermore, the thermal pad 11 is typically made of a material with good thermal conductivity. It is adhered to the inner wall of the magnet assembly 5 and also to the outer wall of the rotor core 3. When the permanent magnet motor 1 is operating, the rotor core 3 rotates in a magnetic field formed by the stator core 2, and the heat dissipation holes 12 dissipate heat from the magnet assembly 5.

[0032] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A permanent magnet motor magnet assembly for a high-power, low-energy-consumption UAV, comprising a stator core (2), a rotor core (3), and a permanent magnet motor (1), wherein the stator core (2) and the rotor core (3) are assembled inside the housing of the permanent magnet motor (1), a stator coil (4) is wound around the outer wall of the surface of the stator core (2) through an opening, and a magnet assembly (5) is assembled on the outer wall of the rotor core (3), characterized in that: The magnet assembly (5) is distributed in a circumferential array on the outer side wall of the rotor core (3), the outer side wall of the rotor core (3) is provided with a mounting groove (6), and one end of the rotor core (3) is provided with a fixing groove (7); One end of the rotor core (3) is provided with a limiting block (8), the outer side wall of the limiting block (8) is through threaded connected with a bolt (9), and the inner side wall of the magnet assembly (5) is provided with a sliding block (10).

2. The high-power low-energy permanent magnet motor magnet assembly for unmanned aerial vehicles according to claim 1, characterized in that: The size of the sliding block (10) is matched with the size of the mounting groove (6), the mounting groove (6) and the sliding block (10) are provided in a "convex" shape, and the number of the mounting groove (6) is the same as the number of the magnet assembly (5).

3. The high-power low-energy permanent magnet motor magnet assembly for unmanned aerial vehicles according to claim 1, characterized in that: The limiting block (8) is annular and has the same size as the fixing groove (7), and the length of the limiting block (8) is the same as the depth of the fixing groove (7).

4. The high-power low-energy permanent magnet motor magnet assembly for unmanned aerial vehicles of claim 1, wherein: The limiting block (8) is detachably connected with the rotor core (3) through the bolt (9).

5. The high-power low-energy permanent magnet motor magnet assembly for drones of claim 1, wherein: The sliding block (10) is symmetrically connected to the inner side wall of the magnet assembly (5), and the assembly position of the sliding block (10) close to the limiting block (8) is attached to the back end surface of the limiting block (8).

6. The high-power low-loss permanent magnet motor magnet assembly for unmanned aerial vehicles of claim 1, wherein: The inner side wall of the magnet assembly (5) is connected with a heat-conducting pad (11), and the side wall of the magnet assembly (5) is through provided with a heat dissipation hole (12).

7. The high-power low-loss permanent magnet motor magnet assembly for unmanned aerial vehicles according to claim 6, characterized in that: The heat dissipation hole (12) is provided with five groups and is distributed at equal intervals.

Images