High-stability energy-saving disc type motor for unmanned aerial vehicle

Abstract

The invention discloses a high-stability energy-saving disc type motor for an unmanned aerial vehicle, and relates to the technical field of disc type motors for unmanned aerial vehicles, the high-stability energy-saving disc type motor comprises a shell and rotor assemblies, a stator disc is arranged in the middle of the shell, heat dissipation fins are arranged on the outer side of the shell, and the rotor assemblies are arranged on the two sides in the shell. Before the motor is used, the motor can be adjusted according to needs, so that switching between single-shaft output and double-shaft output is achieved, during use, the air gap between the rotor and the stator can be automatically adjusted according to the temperature of the rotor during operation, the air gap is kept constant, the situation that the air gap is reduced due to thermal expansion of the rotor is avoided, and the service life of the motor is prolonged. And in the operation process of the rotor, the rotor can be automatically balanced according to the loss of the rotor, the unstable rotating speed caused by unbalance during rotation of the rotor is avoided, and in the rotation process of the rotor, heat dissipation can be automatically carried out, so that the internal temperature of the motor is kept stable, and the motor is prevented from being damaged due to too high temperature.

Description

Technical Field

[0001] This invention relates to the field of disc motor technology for unmanned aerial vehicles (UAVs), specifically a highly stable energy-saving disc motor for UAVs. Background Technology

[0002] Disc motors, also known as axial magnetic field motors, differ from ordinary motors in that their magnetic flux direction is axial, their current-carrying conductors are placed radially, and their stator and rotor cores have a disc structure. Due to their short axial dimensions and high power / torque density, they have shown significant advantages in fields with strict space and weight constraints, such as UAVs and electric vertical take-off and landing aircraft.

[0003] When existing disc motors are running, the rotor expands due to increased temperature, which reduces the working air gap between the rotor and stator. This affects the uniformity of the magnetic field, causing torque pulsation, decreased efficiency, and increased vibration and noise. In severe cases, it can even lead to rotor rubbing accidents. Furthermore, during operation, the rotor can experience dynamic mass imbalance due to material inhomogeneity, assembly errors, or minor wear and deformation. This imbalance generates periodic centrifugal force, which is the main source of motor vibration and noise, seriously affecting bearing life, control accuracy, and even flight safety. Summary of the Invention

[0004] The purpose of this invention is to provide a highly stable, energy-saving disc motor for unmanned aerial vehicles (UAVs) to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a highly stable energy-saving disc motor for unmanned aerial vehicles (UAVs), comprising a housing and a rotor assembly. A stator disc is disposed in the center of the housing, and heat dissipation fins are disposed on the outer side of the housing. The rotor assembly is disposed on both sides inside the housing, and includes a rotor disc. Rotor discs are disposed on both sides inside the housing, and a shaft is connected to the center of each rotor disc. A connecting groove is provided inside the shaft, and a splined shaft is disposed within the connecting groove. An adjusting groove is provided at one end of the shaft on one side of the housing, and an adjusting rod is threadedly connected within the adjusting groove. Rotary grooves are symmetrically opened on both sides of the inner wall of the housing, and a ring plate is engaged within each rotary groove. A bimetallic ring is disposed on one side of each ring plate.

[0006] Furthermore, the splined shaft is slidably connected to the shaft rod through a connecting groove, and the splined shaft is rotatably connected to the adjusting rod. The ring plate is rotatably connected to the housing through a rotating groove.

[0007] Furthermore, the bimetallic ring is made of two layers of materials with different coefficients of thermal expansion, and the two sides of the bimetallic ring are respectively connected to the ring plate and the rotor disk, and the side of the shaft where the adjusting groove is located is the bottom of the motor.

[0008] Furthermore, the housing is provided with covers on both sides, and an air outlet is provided on the cover on the bottom side of the motor, and an air inlet is provided in the middle of the cover.

[0009] Furthermore, the cover on one side of the bottom of the motor does not obstruct the heat dissipation fins, while the cover on the other side of the motor covers the heat dissipation fins. The air outlets are equidistantly distributed circumferentially on the cover, and the air outlets are located at the edge of the cover.

[0010] Furthermore, the shaft is connected to an impeller on the side of the rotor disk away from the stator disk, and a heat sink is connected to the outside of the impeller on the rotor disk. The end of the heat sink near the impeller is inclined, and the impeller is located inside the air inlet.

[0011] Furthermore, a balance chamber is provided on one side edge of the rotor disk inside the housing, and a guide vane is provided inside the balance chamber.

[0012] Furthermore, the cross-section of the balancing cavity is trapezoidal, and the guide vanes are located on the vertical side of the balancing cavity, with the guide vanes arranged in a spiral pattern within the balancing cavity.

[0013] Furthermore, the equilibrium chamber is filled with a mixture of a high-density carrier liquid and a low-boiling-point working fluid, and the two are partially miscible in the liquid state. The carrier liquid can be selected as perfluoropolyether oil, and the working fluid can be selected as a mixture of alkanes, with the boiling point of the alkane mixture being 40°.

[0014] Furthermore, the heat sink is provided with heat dissipation channels, which are distributed in a coiled manner within the heat sink. The heat dissipation channels are connected to the balance chamber through small pipes.

[0015] This invention provides a highly stable energy-saving disc motor for UAVs, which has the following advantages: Before use, the motor can be adjusted as needed to switch between single-axis and dual-axis output. During use, it can automatically adjust the air gap between the rotor and stator according to the rotor's operating temperature to maintain a constant air gap and prevent the air gap from decreasing due to the rotor's thermal expansion, which would lead to increased torque pulsation and vibration noise, affecting the stability of the rotation speed. During the rotor's operation, it can automatically balance the rotor based on the rotor's losses to prevent the rotor from becoming unbalanced, causing unstable speed or even collisions between the rotor and the housing or stator, resulting in damage. Furthermore, the rotor can dissipate heat on its own during rotation to maintain a stable internal temperature and prevent damage due to overheating.

[0016] 1. Before use, the motor can be adjusted as needed to switch between single-shaft and dual-shaft output. Switching is simple: just rotate the adjusting rod in the adjusting slot to slide the splined shaft in the connecting slot. Operation is convenient. In single-shaft output, the splined shaft engages with both shafts through the connecting slot, increasing the output torque of the shafts. In dual-shaft output, the splined shaft only engages with the shaft at the bottom of the motor. This allows the two rotor discs to rotate in opposite directions via the shafts, achieving angular momentum balance and improving motor stability. During use, as the rotor disc temperature rises, the heat is transferred to the bimetallic ring. The bimetallic ring, made of two layers of materials with different coefficients of thermal expansion, expands to varying degrees, causing the rotor discs and shafts to move slightly away from the stator discs. The higher the temperature of the rotor disc, the greater the thermal expansion of the rotor disc and the bimetallic ring. The greater the distance the bimetallic ring drives the rotor disc to move, thus compensating for the thermal expansion of the rotor disc. This, in turn, adjusts the air gap between the rotor disc and the stator disc, maintaining a constant air gap. This prevents the air gap from decreasing due to the rotor disc's own thermal expansion, which would lead to increased torque pulsation and vibration noise, affecting the stability of the rotational speed. Furthermore, in single-shaft output, the spline shaft maintains synchronous rotation between the shafts while avoiding damage to the middle section of the shaft caused by the movement of the rotor discs when using a single shaft to connect two rotor discs, which could result in tension on both sides. When the rotor disc rotates, the bimetallic ring drives the ring plate to rotate within the slot, allowing the ring plate to protect and support the bimetallic ring, maintaining its stability and preventing the bimetallic ring from failing to accurately drive the rotor disc to move the corresponding distance due to frictional wear as it rotates with the rotor disc.

[0017] 2. In this invention, when the rotor disk rotates, the high-density carrier liquid in the balance chamber can move within the balance chamber under the action of centrifugal force and be evenly distributed within the balance chamber. The spiral flow channel forms viscous damping on the fluid movement, and its damping coefficient increases with the increase of rotational speed. This can suppress high-frequency micro-vibrations at high speeds, thereby improving the stability of the rotor during rotation. Furthermore, when the rotor becomes unbalanced due to wear, a centrifugal force difference will form between the areas with more wear and the areas with less wear. Under the action of this centrifugal force difference, a pressure gradient will be formed within the balance chamber, thereby driving the high-density carrier liquid in the balance chamber to flow from the areas with less wear to the areas with more wear, compensating for the areas with more wear, until the centrifugal force of the entire rotor disk is balanced again. This allows for real-time dynamic adjustment of the rotor's balance during rotation, improving the stability of the rotor disk during rotation.

[0018] 3. In this invention, when the rotor disk temperature rises, the heat from the rotor disk is transferred to the heat dissipation plate. The low-boiling-point working fluid in the balance chamber absorbs the heat from the rotor disk and vaporizes within the balance chamber. As the working fluid vaporizes, the steam enters the heat dissipation channel along the tiny pipes inside the rotor disk, transferring heat to the heat dissipation plate. At this time, the impeller draws air from the air inlet into the casing and blows it onto the heat dissipation plate, cooling the plate. This causes the steam in the heat dissipation channel to condense and liquefy, and under centrifugal force and the pressure of subsequently entering steam, it flows back into the balance chamber, forming a circulation of the working fluid. This ensures the heat dissipation effect inside the motor, thereby ensuring that the internal temperature of the motor remains within the normal range during operation and preventing the motor from generating additional heat. This design minimizes energy loss while ensuring the stability of the motor operation. Air inside the top cover of the motor can exit from the edge of the cover and be blown onto the heat sink fins, which cool the interior of the casing. Meanwhile, air inside the bottom cover of the motor can exit from the vent and, together with the air exiting from the top cover, form a thrusting airflow at the bottom of the motor, providing additional thrust for the drone, reducing flight drag, and utilizing waste heat. Furthermore, the shape of the cover ensures that the airflow does not interfere with each other and provides additional thrust, whether in single-axis or dual-axis drive. The shape of the heat sink also guides the airflow, preventing turbulence inside the cover from affecting airflow and heat dissipation. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a highly stable energy-saving disc motor for unmanned aerial vehicles according to the present invention; Figure 2 This is a half-section three-dimensional structural diagram of a high-stability, energy-saving disc motor for unmanned aerial vehicles (UAVs) under single-axis drive according to the present invention. Figure 3 This is a half-section exploded three-dimensional structural diagram of the rotor disk of a high-stability energy-saving disc motor for unmanned aerial vehicles according to the present invention. Figure 4 This is a partial cross-sectional front view schematic diagram of a high-stability energy-saving disc motor for unmanned aerial vehicles according to the present invention; Figure 5 This is a partial cross-sectional three-dimensional structural diagram of a dual-axis drive for a high-stability, energy-saving disc motor used in unmanned aerial vehicles according to the present invention. Figure 6 This invention relates to a highly stable, energy-saving disc motor for unmanned aerial vehicles (UAVs). Figure 5 Enlarged structural diagram at point A in the middle.

[0020] In the diagram: 1. Housing; 2. Stator disc; 3. Heat dissipation fins; 4. Rotor assembly; 401. Rotor disc; 402. Shaft; 403. Connecting groove; 404. Splined shaft; 405. Adjustment groove; 406. Adjustment rod; 407. Rotary groove; 408. Ring plate; 409. Bimetallic ring; 5. Cover; 6. Air outlet; 7. Air inlet; 8. Impeller; 9. Heat dissipation plate; 10. Balance chamber; 11. Guide vane; 12. Heat dissipation channel. Detailed Implementation

[0021] Please see Figures 1 to 6 The present invention provides a technical solution: a high-stability energy-saving disc motor for unmanned aerial vehicles, comprising a housing 1 and a rotor assembly 4. A stator disk 2 is provided in the middle of the housing 1, and heat dissipation fins 3 are provided on the outer side of the housing 1. The rotor assembly 4 is provided on both sides inside the housing 1. The rotor assembly 4 includes a rotor disk 401. The rotor disks 401 are provided on both sides inside the housing 1, and a shaft 402 is connected to the middle of the rotor disk 401. A connecting groove 403 is provided inside the shaft 402, and a spline shaft 404 is provided in the connecting groove 403. An adjustment groove 405 is provided at one end of the shaft 402 on one side of the housing 1, and an adjustment rod 406 is threadedly connected in the adjustment groove 405. Rotary grooves 407 are symmetrically opened on both sides of the inner wall of the housing 1, and a ring plate 408 is engaged in the rotating groove 407. A bimetallic ring 409 is provided on one side of the ring plate 408.

[0022] Please see Figures 2 to 6 The splined shaft 404 is slidably connected to the shaft 402 through the connecting groove 403, and the splined shaft 404 is rotatably connected to the adjusting rod 406. The ring plate 408 is rotatably connected to the housing 1 through the rotating groove 407. The bimetallic ring 409 is made of two layers of materials with different coefficients of thermal expansion, and the two sides of the bimetallic ring 409 are respectively connected to the ring plate 408 and the rotor disk 401. The side of the shaft 402 where the adjusting groove 405 is located is the bottom of the motor. The specific operation is as follows: Before use, the motor can be adjusted as needed to switch between single-shaft output and dual-shaft output. In single-shaft output, the output torque of shaft 402 increases, while in dual-shaft output, the two rotor disks 401 drive the propeller connected to them to rotate in opposite directions through shaft 402, thereby achieving angular momentum balance and improving the stability of the motor. During use, when the temperature of rotor disk 401 rises, its heat will be transferred to bimetallic ring 409, causing bimetallic ring 409 to drive rotor disk 401 to move slightly away from stator disk 2, compensating for the thermal expansion of rotor disk 401, thereby adjusting the air gap and maintaining a constant air gap. In single-shaft output, spline shaft 404 maintains synchronous rotation between shafts 402 while preventing shaft 402 from being damaged by force.

[0023] Please see Figures 5 to 6The casing 1 has covers 5 on both sides, and the cover 5 on the bottom side of the motor has an air outlet 6. The cover 5 in the middle of the cover 5 has an air inlet 7. The cover 5 on the bottom side of the motor does not cover the heat dissipation fins 3, and the cover 5 on the other side of the motor covers the heat dissipation fins 3. The air outlets 6 are equidistantly distributed on the cover 5 and are located at the edge of the cover 5. The shaft 402 is connected to the impeller 8 on the side of the rotor disk 401 away from the stator disk 2, and the rotor disk 401 is connected to the outside of the impeller 8. The end of the heat dissipation plate 9 near the impeller 8 is inclined, and the impeller 8 is located inside the air inlet 7. The rotor disk 401 is located on the casing 1. A balance chamber 10 is provided on one side edge of the chamber, and a guide vane 11 is provided inside the balance chamber 10. The balance chamber 10 has a trapezoidal cross section, and the guide vane 11 is located on the vertical side of the balance chamber 10. The guide vane 11 is spirally distributed inside the balance chamber 10. The balance chamber 10 is filled with a mixture of high-density carrier liquid and low-boiling-point working fluid, and the two are partially miscible in the liquid state. The carrier liquid can be perfluoropolyether oil, and the working fluid can be a mixture of alkanes with a boiling point of 40°. A heat dissipation channel 12 is provided inside the heat dissipation plate 9, and the heat dissipation channel 12 is coiled inside the heat dissipation plate 9. The heat dissipation channel 12 is connected to the balance chamber 10 through a small pipe. The specific operation is as follows: When the rotor disk 401 rotates, the high-density carrier liquid in the balance chamber 10 can move within the balance chamber 10 under the action of centrifugal force and be evenly distributed within the balance chamber 10. The spiral flow channel forms viscous damping on the fluid movement, suppressing high-frequency micro-vibrations at high speeds, thereby improving the stability of the rotor rotation. When the rotor becomes unbalanced due to wear, a centrifugal force difference will form between the areas with more wear and the areas with less wear. The high-density carrier liquid will flow from the areas with less wear to the areas with more wear under the action of centrifugal force difference, compensating for the areas with more wear, until the overall centrifugal force of the rotor disk 401 is balanced again. This allows for real-time dynamic adjustment of the rotor's balance during rotation, improving the stability of the rotor disk 401 during rotation. When the temperature of the rotor disk 401 rises, the low-boiling-point working fluid in the balance chamber 10 will absorb the heat from the rotor disk 401 and vaporize. The vapor enters the heat dissipation channel 12 and transfers the heat. When air is supplied to the heat sink 9, the impeller 8 draws air from the air inlet 7 into the housing 5 and blows it onto the heat sink 9, cooling the heat sink 9. This causes the steam in the heat dissipation channel 12 to condense and liquefy, and under centrifugal force and the pressure of the subsequently entering steam, it flows back into the balance chamber 10, forming a circulation of the working fluid. This ensures that the internal temperature of the motor remains within the normal range during operation. The air in the top housing 5 of the motor can leave from the edge of the housing 5 and be blown onto the heat dissipation fins 3, which cool the inside of the housing. Meanwhile, the air in the bottom housing 5 of the motor can leave from the air outlet 6 and, together with the air leaving from the top housing 5, form a pushing airflow at the bottom of the motor, thereby providing additional thrust for the UAV, reducing flight drag, and realizing waste heat utilization. Furthermore, the shape of the housing 5 ensures that the airflow does not interfere with each other and provides additional thrust, whether in single-axis or dual-axis drive.

[0024] In summary, this highly stable energy-saving disc motor for UAVs allows for easy switching between single-axis and dual-axis output by first adjusting the motor as needed. During switching, simply rotate the adjusting rod 406 within the adjusting slot 405, causing the splined shaft 404 to slide within the connecting slot 403. In single-axis output, the splined shaft 404 engages with both shafts 402 via the connecting slot 403, increasing the output torque of the shafts 402. In dual-axis output, the splined shaft 404 engages only with the shaft 402 at the bottom of the motor, ensuring that the two shafts 402 do not interfere with each other during rotation. This allows the two rotor discs 401 to rotate in opposite directions via the shafts 402, achieving angular momentum balance and improving the motor's stability. During use, when the temperature of the rotor disk 401 rises, its heat is transferred to the bimetallic ring 409. The bimetallic ring 409 is made of two layers of materials with different coefficients of thermal expansion, causing the bimetallic ring 409 to expand to different degrees. This causes the rotor disk 401 to drive the shaft 402 to move slightly away from the stator disk 2. The higher the temperature of the rotor disk 401, the greater the thermal expansion of the rotor disk 401 and the bimetallic ring 409, and the greater the distance that the bimetallic ring 409 drives the rotor disk 401 to move. This compensates for the thermal expansion of the rotor disk 401 and adjusts the air gap between the rotor disk 401 and the stator disk 2, maintaining a constant air gap. This prevents the air gap from decreasing due to the thermal expansion of the rotor disk 401, which would lead to increased torque pulsation and vibration noise, affecting the stability of the rotational speed. Furthermore, during single-axis output, the spline shaft 404 maintains synchronous rotation between the shafts 402 while avoiding damage to the middle section of the shaft 402 due to the movement of the rotor disks 401 caused by the tension forces on both sides when using a single shaft 402 to connect two rotor disks 401. When the rotor disk 401 rotates, the bimetallic ring 409 can drive the ring plate 408 to rotate within the rotating groove 407, so that the ring plate 408 can protect and support the bimetallic ring 409, maintain its stability, and prevent the bimetallic ring 409 from failing to accurately drive the rotor disk 401 to move the corresponding distance due to frictional wear when rotating with the rotor disk 401. When the rotor disk 401 rotates, the high-density carrier liquid in the balance chamber 10 can move within the balance chamber 10 under the action of centrifugal force and be evenly distributed within the balance chamber 10. The spiral flow channel forms viscous damping for the fluid movement, and its damping coefficient increases with the increase of rotational speed. This can suppress high-frequency micro-vibrations at high speeds, thereby improving the stability of the rotor during rotation. Furthermore, when the rotor becomes unbalanced due to wear, a centrifugal force difference will form between the areas with more wear and the areas with less wear. Under the action of this centrifugal force difference, a pressure gradient will be formed within the balance chamber 10, thereby driving the high-density carrier liquid in the balance chamber 10 to flow from the areas with less wear to the areas with more wear, compensating for the areas with more wear, until the overall centrifugal force of the rotor disk 401 is balanced again. This allows for real-time dynamic adjustment of the rotor's balance during rotation, improving the stability of the rotor disk 401 during rotation. When the temperature of rotor disk 401 rises, the heat of rotor disk 401 is transferred to heat sink 9. The low-boiling-point working fluid in balance chamber 10 absorbs the heat of rotor disk 401 and vaporizes in balance chamber 10. As the working fluid vaporizes, the steam enters heat sink 12 through the small pipes in rotor disk 401 and transfers heat to heat sink 9. At this time, impeller 8 draws air from air inlet 7 into cover 5 and blows it onto heat sink 9 to cool heat sink 9. This causes the steam in heat sink 12 to condense and liquefy, and under centrifugal force and the pressure of subsequent steam, it flows back into balance chamber 10, forming a circulation of working fluid and ensuring the heat dissipation effect inside the motor. This ensures that the internal temperature of the motor is always kept within the normal range during operation, avoiding additional losses in the motor and ensuring the stability of motor operation. Air inside the top cover 5 of the motor can exit from the edge of the cover 5 and be blown onto the heat dissipation fins 3, which cool the inside of the housing. Meanwhile, air inside the bottom cover 5 of the motor can exit from the air outlet 6 and, together with the air exiting from the top cover 5, form a pushing airflow at the bottom of the motor, thereby providing additional thrust for the UAV, reducing flight drag, and realizing waste heat utilization. Furthermore, the shape of the cover 5 ensures that the airflow does not interfere with each other and provides additional thrust, whether it is single-axis or dual-axis drive. The shape of the heat dissipation plate 9 can also guide the airflow and prevent the air from forming turbulence inside the cover 5, which would affect the airflow and heat dissipation effect.

[0025] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0026] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only for the purpose of helping to understand the method and core ideas of the present invention. The above descriptions are only preferred embodiments of the present invention. It should be noted that due to the limitations of textual expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of the present invention.

Claims

1. A highly stable, energy-saving disc motor for unmanned aerial vehicles (UAVs), characterized in that, The assembly includes a housing (1) and a rotor assembly (4). A stator disk (2) is provided in the middle of the housing (1), and heat dissipation fins (3) are provided on the outer side of the housing (1). The rotor assembly (4) is located on both sides inside the housing (1). The rotor assembly (4) includes a rotor disk (401). The rotor disks (401) are provided on both sides inside the housing (1), and a shaft (402) is connected to the middle of the rotor disk (401). A connecting rod is provided inside the shaft (402). The connecting groove (403) is provided with a spline shaft (404). One end of the shaft (402) on one side of the housing (1) is provided with an adjustment groove (405). An adjustment rod (406) is threadedly connected in the adjustment groove (405). Rotary grooves (407) are symmetrically opened on both sides of the inner wall of the housing (1). A ring plate (408) is engaged in the rotating groove (407). A bimetallic ring (409) is provided on one side of the ring plate (408).

2. The high-stability, energy-saving disc motor for unmanned aerial vehicles according to claim 1, characterized in that, The spline shaft (404) is slidably connected to the shaft (402) through the connecting groove (403), and the spline shaft (404) is rotatably connected to the adjusting rod (406). The ring plate (408) is rotatably connected to the housing (1) through the rotating groove (407).

3. The high-stability energy-saving disc motor for unmanned aerial vehicles according to claim 1, characterized in that, The bimetallic ring (409) is made of two layers of materials with different coefficients of thermal expansion, and the two sides of the bimetallic ring (409) are connected to the ring plate (408) and the rotor disk (401) respectively. The side of the shaft (402) where the adjusting groove (405) is located is the bottom of the motor.

4. The high-stability energy-saving disc motor for unmanned aerial vehicles according to claim 1, characterized in that, The housing (1) has covers (5) on both sides, and an air outlet (6) is provided on the cover (5) on the bottom side of the motor, and an air inlet (7) is provided in the middle of the cover (5).

5. The high-stability energy-saving disc motor for unmanned aerial vehicles according to claim 4, characterized in that, The cover (5) on one side of the bottom of the motor does not cover the heat dissipation fins (3), and the cover (5) on the other side of the motor covers the heat dissipation fins (3). The air outlets (6) are equidistantly distributed on the cover (5) and are located at the edge of the cover (5).

6. The high-stability, energy-saving disc motor for unmanned aerial vehicles according to claim 4, characterized in that, The shaft (402) is connected to an impeller (8) on the side of the rotor disk (401) away from the stator disk (2), and the rotor disk (401) is connected to a heat sink (9) on the outside of the impeller (8). The end of the heat sink (9) near the impeller (8) is inclined, and the impeller (8) is located inside the air inlet (7).

7. A high-stability, energy-saving disc motor for unmanned aerial vehicles according to claim 6, characterized in that, The rotor disk (401) has a balance cavity (10) on one side edge inside the housing (1), and a guide vane (11) is provided inside the balance cavity (10).

8. The high-stability energy-saving disc motor for unmanned aerial vehicles according to claim 7, characterized in that, The balance cavity (10) has a trapezoidal cross section, and the guide vane (11) is located on the vertical side of the balance cavity (10). The guide vane (11) is spirally distributed inside the balance cavity (10).

9. A high-stability, energy-saving disc motor for unmanned aerial vehicles according to claim 8, characterized in that, The balance chamber (10) is filled with a mixture of high-density carrier liquid and low-boiling-point working fluid, and the two are partially miscible in the liquid state. The carrier liquid can be perfluoropolyether oil, and the working fluid can be a mixture of alkanes with a boiling point of 40°.

10. A high-stability, energy-saving disc motor for unmanned aerial vehicles according to claim 7, characterized in that, The heat sink (9) is provided with heat dissipation channels (12), and the heat dissipation channels (12) are distributed in a coiled manner within the heat sink (9). The heat dissipation channels (12) are connected to the balance chamber (10) through a small pipe.

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