CN213043557U - Unmanned aerial vehicle and driving motor of screw thereof - Google Patents

Abstract

The utility model relates to an unmanned aerial vehicle and driving motor of screw thereof, this driving motor include motor body and heat abstractor, heat abstractor includes at least one heat pipe, the heat pipe includes the body and is located evaporation zone and the condensation segment at body both ends, the evaporation zone is arranged motor body's inside, the body is followed motor body outwards extends, so that the condensation segment exposes in the air. The driving motor utilizes the heat pipe to lead the heat in the motor body out of the driving motor and expose the heat in the air, and the heat pipe has high heat transfer efficiency, high reliability and better heat dissipation effect; the driving motor utilizes the heat pipe for heat transfer, so that the motor body does not need to be communicated with the outside air, the sealing performance of the motor body is ensured, and the protection grade of the driving motor is improved; because the heat pipe is light in weight and good in heat dissipation effect, the power consumption caused by overheating of the driving motor can be effectively reduced, and the power density is improved.

Description

Unmanned aerial vehicle and driving motor of screw thereof

Technical Field

The utility model relates to an unmanned aerial vehicle power technology field specifically relates to an unmanned aerial vehicle and driving motor of screw thereof.

Background

With the gradual maturity of unmanned aerial vehicle technology, unmanned aerial vehicles have achieved a replacement for traditional working methods in some fields. The wide application of unmanned aerial vehicles in various fields puts higher demands on the performance of the driving motor of the propeller of the unmanned aerial vehicle. The driving motor of the existing unmanned aerial vehicle mainly comprises a stator assembly and a rotor assembly, and the rotor assembly rotates relative to the stator assembly to drive the propeller of the unmanned aerial vehicle to rotate. During operation of the drive motor, a significant amount of heat is generated between the stator and rotor assemblies. In order to solve the heat dissipation problem of the driving motor, a technical means is generally adopted to communicate the driving motor with the outside air, and the rotation of a rotor assembly of the driving motor is utilized to make the air flow through the inside of the driving motor, for example, blades are processed on a rotor, so that the rotor has the function of a centrifugal fan, thereby achieving the heat dissipation effect. However, this method cannot be applied to a driving motor with a high Protection level (IP) or a low rotation speed, because air can bring in a large amount of impurities when flowing through the driving motor, which affects the performance of the driving motor, and the driving motor with the low rotation speed has a slow convection rate with air, which greatly limits the heat dissipation effect.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an unmanned aerial vehicle and driving motor of screw thereof, this driving motor of unmanned aerial vehicle screw have that the radiating effect is good, protection level is high, advantages such as power density height.

In order to achieve the above object, the present disclosure provides a driving motor of a propeller of an unmanned aerial vehicle, the driving motor includes a motor body and a heat dissipation device, the heat dissipation device includes at least one heat pipe, the heat pipe includes a pipe body and an evaporation section and a condensation section that are located at both ends of the pipe body, the evaporation section is arranged inside the motor body, the pipe body extends outwards from the motor body, so that the condensation section is exposed in the air.

Optionally, the motor body includes a stator assembly and a rotor assembly rotatably disposed about the stator assembly via a rotational axis, and the evaporation section includes at least one arc segment disposed within the stator assembly extending about the rotational axis.

Optionally, the evaporation section is formed in an end-to-end spaced non-closed loop shape, and/or the cross-section of the evaporation section is formed flat.

Optionally, the motor body includes stator base, stator winding and stator core, the stator winding twines on the stator core, the stator core is fixed on the stator base, the stator base orientation the surface of stator winding is formed with inside sunken groove, the extending direction in groove with the extending direction looks adaptation of evaporation zone, for the evaporation zone inlays and establishes wherein, and be formed with on the lateral wall of stator base with the via hole of groove intercommunication, in order to allow the body passes the lateral wall of stator base and outwards extends.

Optionally, the heat dissipation device further includes a heat conducting medium disposed between the stator winding and the evaporation section to transfer heat of the stator winding to the evaporation section.

Optionally, the heat dissipation device further comprises a heat conduction member, and the heat conduction member is arranged at the condensation section to increase the heat dissipation area of the condensation section.

Optionally, the heat conducting member includes a heat dissipating base and a plurality of heat dissipating fins, the heat dissipating base is formed with an accommodating cavity for accommodating the condensing section, and the heat dissipating fins are arranged at intervals along an outer surface of the heat dissipating base and protrude from the outer surface of the heat dissipating base.

Alternatively, the heat dissipating base is formed in an elongated shape, the accommodating chamber is formed in a straight line shape penetrating through the heat dissipating base, the condensing section is inserted into the accommodating chamber, and the heat dissipating fins are formed as a single row of heat dissipating fins arranged at intervals in an extending axial direction of the heat dissipating base.

Another aspect of the present disclosure also provides a drone including a propeller and a drive motor for the propeller of the drone as described above.

Optionally, the condenser section of the heat pipe of the drive motor is arranged below the propeller such that the condenser section is exposed to the airflow generated by the propeller when the propeller is in operation.

Through above-mentioned technical scheme, the driving motor of unmanned aerial vehicle's screw in this disclosed embodiment has advantages such as the radiating effect is good, protection level is high, power density is high. Specifically, in the first aspect, the driving motor utilizes the heat pipe to conduct heat inside the motor body to the outside of the driving motor and expose the heat to the air, for example, the heat can be directly exchanged with the air, or the heat exchange efficiency of the heat pipe can be accelerated by utilizing airflow generated by a propeller or head-on airflow generated by an unmanned aerial vehicle during flying, so that the driving motor can be rapidly cooled, wherein the energy configuration of the unmanned aerial vehicle is optimized by reasonably utilizing the airflow generated by the propeller; and the heat pipe has the advantages of high heat transfer efficiency, large heat transfer capacity and the like, and compared with the scheme of utilizing the rotation of the rotor assembly to enable the driving motor to generate air convection inside and outside in the related technology, the scheme adopting the heat pipe has high heat conduction reliability and better heat dissipation effect. In the second aspect, the heat pipe is utilized for heat transfer of the driving motor, so that the motor body does not need to be communicated with the outside air, the sealing performance of the motor body is ensured, and the protection grade of the driving motor is improved; for the drive motor with higher protection level, the heat dissipation device does not influence the heat dissipation effect, so that the heat dissipation device can be applied to the drive motor types with different protection levels. In a third aspect, the heat pipe has a small volume, a light weight and a good heat dissipation effect, so that power consumption caused by overheating of the driving motor can be effectively reduced, the output power is improved, and the power density is improved.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

fig. 1 is a schematic structural diagram of a drive motor of a propeller of an unmanned aerial vehicle in an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of a drive motor of a propeller of an unmanned aerial vehicle in an embodiment of the present disclosure, wherein a rotor is not shown;

fig. 3 is an exploded schematic view of a drive motor of a propeller of an unmanned aerial vehicle in an embodiment of the present disclosure;

fig. 4 is a longitudinal cross-sectional view of a drive motor of a propeller of an unmanned aerial vehicle in an embodiment of the present disclosure;

fig. 5 is a partially enlarged view of the area a in fig. 4.

Description of the reference numerals

1. A motor body; 11. a stator base; 111. a groove; 112. a via hole; 12. a stator winding; 13. a rotor; 14. a rotating shaft; 15. a stator core; 2. a heat sink; 21. a heat pipe; 211. a pipe body; 212. an evaporation section; 213. a condensing section; 22. a heat-conducting medium; 23. a heat conductive member; 231. a heat-dissipating substrate; 232. a heat dissipating fin; 233. a receiving cavity.

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, unless otherwise stated, the use of the terms of orientation such as "up and down" is defined based on the orientation conventionally used by the drone, and may also be understood as "up and down" in the direction of gravity and up in the direction opposite to gravity, "inside and outside" refers to the inside and outside of the contour of the corresponding component or structure. The foregoing directional terms are used only to explain and illustrate the present disclosure, and are not to be construed as limiting the present disclosure. Furthermore, the use of terms such as "first," "second," etc., are used to distinguish one element from another, and are not necessarily order nor importance. In addition, in the description with reference to the drawings, the same reference numerals in different drawings denote the same elements.

For a drone with a propeller, the performance of the drive motor of the propeller is closely related to the flight performance of the drone, and the drive motor generates a large amount of heat when in operation. In the related art, in order to solve the heat dissipation problem of the driving motor, the protection effect of the driving motor is often affected by the technical means of dissipating heat by convection of air inside and outside the driving motor, and the heat dissipation problem of the driving motor with a low rotation speed cannot be completely solved.

In view of this, the embodiment of the present disclosure provides a driving motor for a propeller of an unmanned aerial vehicle, so as to solve the heat dissipation problem of the driving motor on the premise of not affecting other performances of the driving motor. As shown in fig. 1 to 4, the driving motor includes a motor body 1 and a heat sink 2, the heat sink 2 includes at least one heat pipe 21, the heat pipe 21 includes a pipe body 211, and an evaporation section 212 and a condensation section 213 located at both ends of the pipe body 211, wherein the evaporation section 212 is disposed inside the motor body 1, and the pipe body 211 extends outward from the motor body 1 such that the condensation section 213 is exposed to air.

It should be understood that the heat pipe 21 mentioned in the present disclosure refers to a heat conducting element that realizes heat transfer by liquid-vapor two-phase change of continuous circulation of the actuating fluid in the cavity, so that liquid-vapor fluid is convected back and forth between the evaporation section 212 and the condensation section 213.

The working principle of the heat dissipation device 2 is as follows: the evaporation section 212 of the heat pipe 21 is disposed inside the motor body 1, for example, may be disposed near the heat generating component, the liquid in the evaporation section 212 is evaporated into a vapor state when heated, and the vapor flows to the condensation section 213 under a pressure difference, thereby taking away heat inside the motor body 1, especially the heat generating component; condensing segment 213 exposes in the air, can directly carry out the heat exchange with the air, or can utilize the air current that the screw produced or the air current of unmanned aerial vehicle flight in-process can accelerate condensing segment 213 and air heat exchange's speed for the steam that reaches condensing segment 213 releases the heat fast and condenses into liquid, flows back to evaporation zone 212 again, and the circulation that reciprocates so realizes the heat dissipation to motor body 1.

Through above-mentioned technical scheme, the driving motor of unmanned aerial vehicle's screw in this disclosed embodiment has advantages such as the radiating effect is good, protection level is high, power density is high. Specifically, in the first aspect, the driving motor utilizes the heat pipe 21 to conduct heat inside the motor body 1 to the outside of the driving motor and expose the heat to the air, for example, the heat can be directly exchanged with the air, or the heat exchange efficiency of the heat pipe 21 can be accelerated by utilizing airflow generated by a propeller or head-on airflow generated by an unmanned aerial vehicle during flying, so as to realize rapid heat dissipation of the driving motor, wherein the energy configuration of the unmanned aerial vehicle is optimized by reasonably utilizing the airflow generated by the propeller; moreover, the heat pipe 21 has the advantages of high heat transfer efficiency, large heat transfer capacity and the like, and compared with the scheme of utilizing the rotation of the rotor assembly to enable the inside and the outside of the driving motor to generate air convection in the related art, the scheme adopting the heat pipe 21 has high heat conduction reliability and better heat dissipation effect. In the second aspect, the heat pipe 21 is used for heat transfer of the driving motor, so that the motor body 1 does not need to be communicated with the outside air, the sealing performance of the motor body 1 is ensured, and the protection grade of the driving motor is improved; for the driving motor with higher protection level, the heat dissipation device 2 does not affect the heat dissipation effect, and therefore, the heat dissipation device 2 can be applied to the driving motor types with different protection levels. In the third aspect, the heat pipe 21 has a small volume, a light weight and a good heat dissipation effect, so that power consumption caused by overheating of the driving motor can be effectively reduced, and the output power is increased, thereby increasing the power density.

It should be understood that the condenser section 213 of the heat pipe 21 described above may be mounted at any location on the outer surface of the drone in a suitable manner such that the condenser section 213 is exposed to the air. For example, can install in positions such as unmanned aerial vehicle's fuselage outer wall, unmanned aerial vehicle horn, screw safety cover, the technical personnel in the art can arrange according to unmanned aerial vehicle type and structural feature adaptability. In addition, the driving motor may be an outer rotor 13 driving motor, or may also be an inner rotor 13 driving motor, which is not limited in this disclosure.

Hereinafter, a specific structure of the driving motor of the propeller of the unmanned aerial vehicle in the embodiment of the present disclosure will be explained in detail with reference to fig. 1 to 5.

In an exemplary embodiment of the present disclosure, as shown in fig. 1 to 3, the motor body 1 includes a stator assembly (such as a stator base 11, a stator winding 12, etc., mentioned below) and a rotor assembly (such as a rotor 13, a rotating shaft 14, etc., mentioned below) rotatably disposed around the stator assembly through the rotating shaft 14, and the evaporation section 212 of the heat pipe 21 includes at least one arc segment that is disposed within the stator assembly extending around the rotating shaft 14 of the motor body 1. The evaporation section 212 of the heat pipe 21 includes at least one arc line segment, which means that the evaporation section 212 may be arranged in a winding manner according to the structural features of the stator assembly, for example, the evaporation section 212 may be formed in a spiral manner and arranged in the vicinity of the inner side wall of the end cover of the stator assembly or the iron core of the stator assembly, and a person skilled in the art may adaptively arrange the orientation of the evaporation section 212 inside the motor body 1 according to the structural features and the heat dissipation requirements of the heat generating components of the driving motor, which is not limited by the present disclosure.

According to the scheme, the heat pipe 21 is flexible in arrangement mode, the arrangement mode and the function of other components of the driving motor cannot be influenced, and the performance of the driving motor is guaranteed. In addition, in other optional embodiments of the present disclosure, the evaporation section 212 is designed as an arc section, and the radius of curvature of the arc section may be designed to be relatively large as much as possible according to the structure of the driving motor, so as to avoid increasing the flow resistance of the fluid in the heat pipe 21 and ensure the heat conduction efficiency of the heat pipe 21.

In an exemplary embodiment of the present disclosure, as shown in fig. 3, the evaporator section 212 is formed in a non-closed loop shape with an end-to-end spacing, wherein the non-closed loop shape means that the arc-shaped section of the evaporator section 212 corresponds to an angle close to 360 °, i.e., close to a loop shape, but with a slight spacing between the head end and the tail end thereof. Thus, the evaporation section 212 can meet the heat dissipation requirement of the whole peripheral direction of the driving motor; and/or the cross section of the evaporation section 212 is formed to be flat, so that the heat dissipation requirement in the radial direction of the driving motor can be considered. The evaporation section 212 with the structure has the advantages of simple structure, easy processing, larger heat exchange surface area and good heat dissipation effect.

In another exemplary embodiment of the present disclosure, the driving motor may also have a plurality of heat pipes 21, here, two heat pipes 21 are taken as an example, in one example, the evaporation sections 212 of the heat pipes 21 may be formed in a semi-circular arc shape, the evaporation sections 212 of the two heat pipes 21 are arranged in a ring shape in the motor body 1, the pipe bodies 211 thereof may extend out of the motor body 1 from the same direction, and may also extend out of the pipe bodies 211 from different directions, such an arrangement may set the condensation section 213 of one heat pipe 21 within a range of a downwash airflow generated by a propeller of the unmanned aerial vehicle, and set the condensation section 213 of the other heat pipe 21 within a range of an oncoming airflow during flight. In another example, two heat pipes 21 may be disposed inside the base and the top cover of the driving motor, respectively, to improve heat dissipation. Those skilled in the art can flexibly design the heat pipes according to practical application scenarios, and the number of the heat pipes 21 for driving the motor is not limited by the present disclosure.

In the embodiment of the present disclosure, the evaporation section 212 of the heat pipe 21 may be fixed inside the motor body 1 in any suitable manner, and in an example of the present disclosure, as shown with continued reference to fig. 3, the motor body 1 includes a stator base 11, a stator winding 12 and a stator core 15, the stator winding 12 is wound on the stator core 15, the stator core 15 is fixed on the stator base 11, a surface of the stator base 11 facing the stator winding 12 is formed with an inward concave slot 111, and an extending direction of the slot 111 is matched with an extending direction of the evaporation section 212, so that the evaporation section 212 is embedded therein. For the driving motor, the stator winding 12 and the stator core 15 of the motor body 1 are main heat generating components, so that the evaporation section 212 is arranged close to the stator winding 12 and the stator core 15, the stator winding 12 and the stator core 15 can be timely cooled, and the phenomenon that the insulating layer fails due to overhigh temperature of the stator winding 12 to cause short circuit of the driving motor is avoided.

By processing the groove 111 on the stator base 11 for embedding the evaporation section 212, not only the internal space occupied by the evaporation section 212 can be reduced, but also the stability of the evaporation section 212 can be improved. It should be understood that, in order to increase the heat exchange area between the evaporation section 212 and the heat generating component such as the stator winding 12, the depth of the groove 111 may be smaller than the radius of the evaporation section 212, that is, the groove 111 mainly plays a role in positioning and snap-fitting the evaporation section 212, and the evaporation section 212 may be fixed in the groove 111 by welding, bonding, or the like, which is not limited by the present disclosure.

Further, a through hole 112 communicating with the groove 111 is formed on the side wall of the stator base 11 to allow the pipe body 211 of the heat pipe 21 to extend outward through the side wall of the stator base 11. Here, according to the protection level requirement of the driving motor, a sealing structure such as a sealing ring may be additionally provided between the inner wall of the via hole 112 and the outer surface of the heat pipe 21, so as to improve the sealing performance of the driving motor.

When the evaporation section 212 of the heat pipe 21 is fitted between the stator base 11 and the stator winding 12, a small gap is left between the evaporation section 212 and the stator winding 12 to prevent the heat pipe 21 from scraping against the insulation layer of the stator winding 12 during fitting. However, in order to increase the effective heat dissipation area of the stator winding 12, in the embodiment of the present disclosure, as shown in fig. 3 and 5, the heat sink 2 further includes a heat transfer medium 22, and the heat transfer medium 22 is disposed between the stator winding 12 and the evaporation section 212 to transfer heat of the stator winding 12 to the evaporation section 212. The heat conducting medium 22 can be heat conducting silica gel, heat conducting silicone grease or graphite sheet, the heat conductivity of the heat conducting medium 22 is far greater than that of air, heat generated by the stator winding 12 and the stator core 15 can be rapidly transferred to the heat pipe 21, and the heat dissipation efficiency of the driving motor is improved.

The structural features of the evaporation section 212 of the heat pipe 21 and the motor body 1 and the arrangement thereof have been described above mainly by way of exemplary embodiments, and it is understood that the above structural features can be applied to the outer rotor 13 driving motor as well as the inner rotor 13 driving motor. Hereinafter, the structure of the condensation section 213 of the heat pipe 21 and an exemplary embodiment of the heat conductive member 23 will be described in detail with reference to fig. 1 to 4.

In an exemplary embodiment of the present disclosure, the heat dissipation device 2 further includes a heat conduction member 23, and the heat conduction member 23 is disposed at the condensation section 213 to increase a heat dissipation area of the condensation section 213 and improve heat dissipation efficiency. The heat-conducting member 23 may be designed to be fixed on the outer surface of the condensation segment 213 in any suitable shape, for example, it may be designed to be spiral extending around the condensation segment 213, radial extending outward along the radial direction of the condensation segment 213, or zigzag extending along the axial direction of the condensation segment 213, etc., which is not limited by the present disclosure.

Further, it is understood that the thermal conductivity of the heat-conducting member 23 is larger than that of air to ensure excellent heat-conducting performance. For example, the heat conducting member 23 may be made of a metal material with high thermal conductivity, such as stainless steel, copper, aluminum, etc., so as to rapidly conduct the heat of the condensing section 213 to the air or gas flow.

Illustratively, as shown in fig. 3 and 4, the heat conducting member 23 includes a heat dissipating base 231 and a plurality of heat dissipating fins 232, wherein the heat dissipating base 231 is formed with a receiving cavity 233 for receiving the condensing section 213, and the heat dissipating fins 232 are spaced along an outer surface of the heat dissipating base 231 and protrude from the outer surface of the heat dissipating base 231. Like this, can inlay the condensation segment 213 of heat pipe 21 in heat dissipation base member 231, on the one hand through heat dissipation base member 231 directly or via radiating fin 232 with heat transfer to the outside air in, on the other hand because the shape of heat dissipation base member 231 has bigger design freedom, can be convenient for fix condensation segment 213 on unmanned aerial vehicle's surface, for example, compare in the scheme with condensation segment 213 direct with unmanned aerial vehicle's external surface fixation, heat dissipation base member 231 can design for the shape that can adapt to structures such as fuselage shell, horn or oar safety cover, with the stability that improves heat pipe 21 is fixed.

Further, the heat dissipation fins 232 can increase the heat dissipation surface area of the heat dissipation base 231, and can be integrally formed with the heat dissipation base 231 by the same heat conduction material. The heat dissipation fins 232 may be disposed at any position of the outer wall of the heat dissipation substrate 231 at intervals, and may be disposed according to a certain order, or disposed irregularly, which is not limited by the present disclosure.

In order to simplify the structure of the heat dissipating device 2, the heat dissipating base 231 may be formed in an elongated shape, the receiving cavity 233 is formed in a linear shape penetrating the heat dissipating base 231, the condensation section 213 is inserted into the receiving cavity 233, and the heat dissipating fins 232 are formed as a single row of heat dissipating fins 232 arranged at intervals along the extending axial direction of the heat dissipating base 231. Thus, the shapes of the heat-conducting member 23 and the condensing section 213 are regular, the processing difficulty is low, and the production cost is relatively low; in addition, radiating fin 232 arranges in one side list of heat dissipation base member 231, has both guaranteed the radiating effect, has also reserved the stationary plane for heat dissipation base member 231 and unmanned aerial vehicle's external surface mounting, in other words, a side of heat dissipation base member 231 can form the radiating fin 232 that arranges in the list, and another side can form the surface complex installation face with unmanned aerial vehicle for the design of heat-conducting piece 23 is more reasonable. It should be understood that the heat dissipating substrate 231 may be attached by various means such as welding, bonding, snapping, etc., and the present disclosure is not limited thereto.

Alternatively, the single row of heat dissipation fins 232 may be arranged in a direction toward the propeller, so that the airflow generated by the propeller can directly act on the heat dissipation fins 232 to accelerate the heat exchange rate between the heat dissipation fins 232 and the air.

In other embodiments of the present disclosure, the condensation section 213 of the heat pipe 21 may be formed in a spiral shape or other curved shapes, and accordingly, the accommodating cavity 233 of the heat dissipation base 231 may be formed in a shape adapted to the condensation section 213 and opened with an opening communicating with the accommodating cavity 233 and allowing the condensation section 213 to enter and exit, so that the heat exchange area between the condensation section 213 and the heat dissipation base 231 may be increased, and this structure may be applied to a driving motor with high power or high heat dissipation requirement.

Another exemplary embodiment of the present disclosure also provides a drone including a propeller and a drive motor for the propeller of the drone as described above. The driving motor has the advantages of good heat dissipation effect, high protection level, high power density and the like, so that the overall flight and energy consumption performance of the unmanned aerial vehicle can be improved.

Furthermore, the condensation section 213 of the heat pipe 21 of the drive motor is arranged below the propeller, for example on a horn or a propeller guard, so that the condensation section 213 is exposed to the airflow generated by the propeller when the propeller is in operation. The heat exchange efficiency of the heat pipe 21 can be accelerated by utilizing the airflow generated by the propeller or the head-on airflow generated by the unmanned aerial vehicle during flying, so that the driving motor can be quickly cooled; and the air current that produces through the propeller carries out rational utilization, has still optimized unmanned aerial vehicle's energy configuration to practice thrift unmanned aerial vehicle's energy consumption.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, various possible combinations will not be separately described in this disclosure.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims (10)

1. The utility model provides a driving motor of unmanned aerial vehicle screw, its characterized in that, driving motor includes motor body (1) and heat abstractor (2), heat abstractor (2) include at least one heat pipe (21), heat pipe (21) include body (211) and be located evaporation zone (212) and condensation segment (213) at body (211) both ends, evaporation zone (212) are arranged in the inside of motor body (1), body (211) are followed motor body (1) are outwards extended, so that condensation segment (213) expose in the air.

2. The drive motor of an unmanned aerial vehicle propeller as defined in claim 1, wherein the motor body (1) comprises a stator assembly and a rotor assembly, the rotor assembly being rotatably arranged around the stator assembly by a rotational axis (14), the evaporation section (212) comprising at least one arc segment arranged within the stator assembly extending around the rotational axis (14).

3. The drive motor of a propeller of a drone of claim 2, characterised in that the evaporation section (212) is formed in a non-closed ring shape spaced end to end and/or in that the cross section of the evaporation section (212) is formed flat.

4. The driving motor of the propeller of the unmanned aerial vehicle as claimed in claim 1, wherein the motor body (1) comprises a stator base (11), a stator winding (12) and a stator core (15), the stator winding (12) is wound on the stator core (15), the stator core (15) is fixed on the stator base (11), an inward concave slot (111) is formed on the surface of the stator base (11) facing the stator winding (12), the extending direction of the slot (111) is matched with the extending direction of the evaporation section (212) so that the evaporation section (212) can be embedded in the slot, and a through hole (112) communicated with the slot (111) is formed on the side wall of the stator base (11) so as to allow the pipe body (211) to extend outwards through the side wall of the stator base (11).

5. The drive motor of an unmanned aerial vehicle propeller as defined in claim 4, wherein the heat sink (2) further comprises a heat conducting medium (22), the heat conducting medium (22) being arranged between the stator winding (12) and the evaporation section (212) to transfer heat of the stator winding (12) to the evaporation section (212).

6. The drive motor of a propeller of an unmanned aerial vehicle according to claim 1, wherein the heat dissipating arrangement (2) further comprises a heat conducting member (23), the heat conducting member (23) being arranged at the condensation section (213) to increase a heat dissipating area of the condensation section (213).

7. The drive motor of an unmanned aerial vehicle propeller as defined in claim 6, wherein the heat conducting member (23) comprises a heat dissipating base (231) and a plurality of heat dissipating fins (232), the heat dissipating base (231) is formed with a receiving cavity (233) for receiving the condensing section (213), and the heat dissipating fins (232) are arranged along an outer surface of the heat dissipating base (231) at intervals and protrude from the outer surface of the heat dissipating base (231).

8. The drive motor of an unmanned aerial vehicle propeller as defined in claim 7, wherein the heat-dissipating base (231) is formed in an elongated shape, the accommodating chamber (233) is formed in a straight line penetrating the heat-dissipating base (231), the condensing section (213) is inserted into the accommodating chamber (233), and the heat-dissipating fins (232) are formed in a single row of heat-dissipating fins (232) arranged at intervals along an extending axial direction of the heat-dissipating base (231).

9. A drone, characterized in that it comprises a propeller and a drive motor of the propeller of the drone according to any one of claims 1 to 8.

10. A drone according to claim 9, characterised in that the condensation section (213) of the heat pipe (21) of the drive motor is arranged below the propeller so that, when the propeller is operating, the condensation section (213) is exposed to the airflow generated by the propeller.

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