Heat dissipation motor and unmanned aerial vehicle

Abstract

The utility model discloses a heat dissipation motor and an unmanned aerial vehicle. The heat dissipation motor comprises an armature assembly and a heat dissipation assembly arranged in the armature assembly. The armature assembly comprises a motor rotor and a motor stator detachably connected with the motor rotor. The motor stator is internally provided with a plurality of airflow channels communicating the upper end face and the lower end face. A motor coil is arranged on the periphery of the motor stator, the heat dissipation assembly is arranged in the airflow channel and attached to the inner periphery of the motor stator, and heat conduction glue is injected into the motor stator and used for conducting heat to the heat dissipation assembly. The heat dissipation assembly is arranged in the airflow channel in the motor stator, airflow entering the unmanned aerial vehicle in the flying process of the unmanned aerial vehicle is used for taking away heat, meanwhile, the heat-conducting glue is injected into the motor stator, the heat-conducting glue overflows through the liquid attribute of the heat-conducting glue, and the heat-conducting glue covers the circumferential surface of the motor stator; therefore, the heat of the motor coil arranged on the periphery of the motor stator is effectively conducted to the motor stator, and the heat dissipation assembly is used for heat dissipation.

Description

Technical Field

[0001] This utility model relates to the field of drone motors, specifically to a heat dissipation motor and a drone. Background Technology

[0002] Unmanned aerial vehicles (UAVs), also known as drones, are unmanned aircraft controlled by radio remote control equipment and onboard program control devices, or operated autonomously, either completely or intermittently, by an onboard computer. Modern UAVs primarily rely on motors for flight propulsion. These motors are characterized by high power, small size, and high power density, leading to highly flexible and widespread applications. However, this high power density also presents a heat generation problem, making heat dissipation a pressing need.

[0003] Currently, in order to achieve heat dissipation of power motors, manufacturers typically incorporate heat sinks into the motor housing design. These heat sinks are formed through die casting or machining, or a graphene coating is applied to the surface to conduct the heat generated during the operation of the power motor.

[0004] However, the heat dissipation efficiency of the above method depends on the flight speed, and the heat exchange efficiency of drones with slower flight speeds has not reached the expected level. Utility Model Content

[0005] Based on this, the purpose of this utility model is to provide a heat dissipation motor and a drone, which aims to solve the problem that the heat dissipation efficiency of the current drone motor depends on the flight speed, and the heat exchange efficiency of drones with slower flight speeds fails to meet expectations.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a heat dissipation motor, the heat dissipation motor comprising an armature assembly and a heat dissipation component disposed within the armature assembly;

[0007] The armature assembly includes a motor rotor and a motor stator detachably connected to the motor rotor. The motor stator has a plurality of airflow channels communicating with the upper and lower end faces.

[0008] The motor coil is located on the outer periphery of the motor stator, the heat dissipation component is located in the airflow channel and is attached to the inner periphery of the motor stator, and thermally conductive adhesive is injected into the motor stator to conduct heat to the heat dissipation component.

[0009] In summary, the heat dissipation motor proposed in this utility model utilizes the airflow entering the drone during flight to remove heat by placing a heat dissipation component within the airflow channels of the motor stator. Simultaneously, thermally conductive adhesive is injected into the motor stator, and its liquid properties allow it to overflow and cover the circumferential surface of the stator, effectively transferring heat from the motor coils located on the outer periphery of the stator to the stator for heat dissipation. Specifically, the armature assembly includes a motor rotor and a motor stator detachably connected to the rotor. The stator contains several airflow channels connecting the upper and lower end faces. The motor coils are located on the outer periphery of the stator, and the heat dissipation component is located within the airflow channels and attached to the inner periphery of the stator. Thermally conductive adhesive is injected into the stator to conduct heat to the heat dissipation component.

[0010] According to one aspect of the above technical solution, the motor stator is provided with heat dissipation plates equal in number to the airflow channels, and each heat dissipation plate is directly opposite one of the airflow channels.

[0011] According to one aspect of the above technical solution, the heat sink is provided with glue injection chambers at both ends, and the glue injection chambers are also provided with glue injection channels on the side facing the motor coil.

[0012] According to one aspect of the above technical solution, the end face of the motor stator near the motor rotor is also provided with a glue injection threaded hole, and a glue injection component is movably connected in the glue injection threaded hole, the glue injection component passing through the glue injection chamber.

[0013] According to one aspect of the above technical solution, the heat dissipation component includes a bonding sheet and a plurality of heat dissipation fins equidistantly disposed on one side of the bonding sheet, wherein the side of the bonding sheet away from the heat dissipation fins is in close contact with the inner wall of the heat dissipation plate.

[0014] According to one aspect of the above technical solution, both the bonding sheet and the heat sink are arrayed with a plurality of screw holes.

[0015] According to one aspect of the above technical solution, the bonding sheet is curved to fit the inner wall of the heat sink.

[0016] According to one aspect of the above technical solution, the rotor shaft of the motor rotor passes through the motor stator, and a plurality of bearings are sleeved on the rotor shaft. The plurality of bearings are locked inside the motor stator, and the rotor shaft and the motor stator are fixedly connected by a locking ring.

[0017] This utility model also proposes an unmanned aerial vehicle (UAV) that includes a heat dissipation motor as described above.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the cooling motor in Embodiment 1 of the utility model;

[0020] Figure 2 This is an exploded view of the structure of the heat dissipation motor in Embodiment 1 of the utility model;

[0021] Figure 3 This is an assembly diagram of the motor stator and heat dissipation assembly in Embodiment 1 of the utility model;

[0022] Figure 4 This is a schematic diagram of the motor stator in Embodiment 1 of the utility model;

[0023] Figure 5 This is a schematic diagram of the heat dissipation component in Embodiment 1 of the utility model.

[0024] Component symbol explanation in the attached diagram:

[0025] Armature assembly 100, motor rotor 110, rotor shaft 111, motor stator 120, airflow channel 121, heat sink 122, glue injection chamber 123, glue injection channel 124, glue injection threaded hole 125, glue injection part 126, heat dissipation assembly 200, bonding sheet 210, heat dissipation fins 220, bearing 300, locking ring 400, motor coil 500, centrifugal fan 600. Detailed Implementation

[0026] To make the objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Several embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete.

[0027] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," "upper," "lower," and similar expressions used herein are for illustrative purposes only and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

[0028] In this utility model, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. The term "and / or" as used herein includes any and all combinations of one or more of the related listed items.

[0029] Example 1

[0030] Please see Figures 1-5 The diagram shows a schematic of a heat dissipation motor according to Embodiment 1 of this utility model. The heat dissipation motor includes an armature assembly 100 and a heat dissipation assembly 200 disposed within the armature assembly 100, wherein:

[0031] Previous external motor heat sinks suffered from many disadvantages, such as low heat dissipation tooth density, difficult processing, and complex installation. This application separates the heat sink from the motor body and then connects them with screws, which greatly improves the tooth density of the heat sink, significantly enhances the heat dissipation efficiency, significantly reduces the processing difficulty, and greatly simplifies the assembly process.

[0032] The armature assembly 100 includes a motor rotor 110 and a motor stator 120 detachably connected to the motor rotor 110. The motor stator 120 has a rotation space in the middle for the rotor shaft 111 to pass through. Several airflow channels 121 are provided around the rotation space. The airflow channels 121 are connected to the upper and lower end faces of the motor stator 120 so that the heat dissipation components 200 located inside the airflow channels 121 can carry away the heat while the airflow flows.

[0033] To efficiently dissipate heat from the heat dissipation assembly 200, the motor stator 120 is provided with heat dissipation plates 122 in the same number as the airflow channels 121, with each heat dissipation plate 122 directly opposite an airflow channel 121. Furthermore, glue injection chambers 123 are provided at both ends of the heat dissipation plates 122. A glue injection channel 124 is provided on the side of the glue injection chamber 123 facing the motor coil 500. A glue injection threaded hole 125 is provided on the end face of the motor stator 120 near the motor rotor 110. A glue injection component 126 is movably connected within the glue injection threaded hole 125 and passes through the glue injection chamber 123. In this embodiment, there are four heat dissipation plates 122 and four airflow channels 121, and glue injection chambers 123 are provided at both ends of the heat dissipation plates 122. Each glue injection chamber 123 has two glue injection channels 124 above and below it for overflowing thermally conductive adhesive.

[0034] Since the motor coil 500 is arranged around and attached to the motor stator 120, after the motor coil 500 is installed, thermally conductive adhesive is injected into the injection part 126. As the amount of thermally conductive adhesive increases, it overflows from the injection channel 124, filling the gap between the motor coil 500 and the motor stator 120. This effectively acts as a thermally conductive medium between the motor coil 500 and the motor stator 120, replacing the air medium, improving the thermal conductivity, and thus significantly improving the motor's heat dissipation efficiency.

[0035] To achieve heat dissipation, the heat dissipation assembly 200 includes a bonding plate 210 and a plurality of heat dissipation fins 220 equidistantly disposed on one side of the bonding plate 210. The side of the bonding plate 210 away from the heat dissipation fins 220 is in close contact with the inner wall of the heat sink 122. Both the bonding plate 210 and the heat sink 122 have a plurality of screw holes arrayed on them. The bonding plate 210 is curved to fit the inner wall of the heat sink 122.

[0036] It should be emphasized that since the motor rotor 110 is circular, the heat sink 122 is curved. In order to fit the heat sink 122, the bonding piece 210 is also curved. In addition, several screw holes are arrayed on both the bonding piece 210 and the heat sink 122, and they are connected by fasteners to make the heat sink 122 and the bonding piece 210 fit tightly together, so as to increase the contact area between them and the heat sink 122 and further improve the heat conduction efficiency.

[0037] Furthermore, in this embodiment, the motor rotor 110 is also provided with a centrifugal fan 600, and a heat dissipation component 200 is provided in any airflow channel 121. The heat dissipation component 200 does not fill the airflow channel 121. The bonding piece 210 is tightly attached to the inner wall of the heat dissipation plate 122. There is a flow space for air circulation between the end of the heat dissipation fin 220 away from the bonding piece 210 and the rotation space of the center of the motor stator 120. By rotating the centrifugal fan 600, external airflow is drawn in, increasing the airflow volume and improving the heat dissipation efficiency.

[0038] To connect the motor stator 120 and the motor rotor 110, the rotor shaft 111 of the motor rotor 110 passes through the motor stator 120, and several bearings 300 are sleeved on the rotor shaft 111. The bearings 300 are locked inside the motor stator 120, and the rotor shaft 111 and the motor stator 120 are fixedly connected by a locking ring 400. The rotation space of the motor stator 120 is provided with a locking groove that conforms to the shape of the bearings 300. One end of the rotor shaft 111 is assembled with the locking ring 400, thereby assembling the motor stator 120 and the motor rotor 110 into one unit.

[0039] In summary, the heat dissipation motor proposed in this utility model utilizes the airflow entering the drone during flight to remove heat by placing a heat dissipation component within the airflow channels of the motor stator. Simultaneously, thermally conductive adhesive is injected into the motor stator, and its liquid properties allow it to overflow and cover the circumferential surface of the stator, effectively transferring heat from the motor coils located on the outer periphery of the stator to the stator for heat dissipation. Specifically, the armature assembly includes a motor rotor and a motor stator detachably connected to the rotor. The stator contains several airflow channels connecting the upper and lower end faces. The motor coils are located on the outer periphery of the stator, and the heat dissipation component is located within the airflow channels and attached to the inner periphery of the stator. Thermally conductive adhesive is injected into the stator to conduct heat to the heat dissipation component.

[0040] Example 2

[0041] This embodiment provides a drone that uses a heat dissipation motor as described in Embodiment 1.

[0042] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0043] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A heat dissipation motor, characterized in that, The heat dissipation motor includes an armature assembly and a heat dissipation assembly disposed within the armature assembly; The armature assembly includes a motor rotor and a motor stator detachably connected to the motor rotor, wherein the motor stator has a plurality of airflow channels communicating with the upper and lower end faces. The motor coil is located on the outer periphery of the motor stator, the heat dissipation component is located in the airflow channel and is attached to the inner periphery of the motor stator, and thermally conductive adhesive is injected into the motor stator to conduct heat to the heat dissipation component.

2. The heat dissipation motor according to claim 1, characterized in that, The motor stator is provided with heat sinks equal in number to the airflow channels, and each heat sink is directly opposite one of the airflow channels.

3. The heat dissipation motor according to claim 2, characterized in that, The heat sink is provided with glue injection chambers at both ends, and the glue injection chambers are also provided with glue injection channels on the side facing the motor coil.

4. The heat dissipation motor according to claim 3, characterized in that, The end face of the motor stator near the motor rotor is also provided with a glue injection threaded hole, and a glue injection component is movably connected in the glue injection threaded hole, and the glue injection component passes through the glue injection chamber.

5. The heat dissipation motor according to claim 1, characterized in that, The heat dissipation assembly includes a bonding sheet and a plurality of heat dissipation fins equidistantly disposed on one side of the bonding sheet, wherein the side of the bonding sheet away from the heat dissipation fins is in close contact with the inner wall of the heat dissipation plate.

6. The heat dissipation motor according to claim 5, characterized in that, Both the bonding sheet and the heat sink have a plurality of screw holes arrayed on them.

7. The heat dissipation motor according to claim 6, characterized in that, The bonding sheet is curved to fit the inner wall of the heat sink.

8. The heat dissipation motor according to claim 1, characterized in that, The rotor shaft of the motor rotor passes through the motor stator, and several bearings are sleeved on the rotor shaft. The bearings are locked inside the motor stator, and the rotor shaft and the motor stator are fixedly connected by a locking ring.

9. A drone, characterized in that, The drone includes a heat dissipation motor as described in any one of claims 1-8.

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