Electric motors and aircraft

Abstract

This application provides an electric motor and an aircraft. The electric motor includes a power module and a heat dissipation module. The power module includes a shaft and a rotor, with a channel connecting the rotor and the shaft to the outside. The rotor has an exhaust vent connecting the channel to the outside. The heat dissipation module includes a heat dissipation turbine, multiple output magnetic components, and multiple input magnetic components. The rotor can drive the multiple input magnetic components to rotate, which in turn drive the multiple output magnetic components and the heat dissipation turbine to rotate. The heat dissipation turbine generates a cooling airflow. The cooling airflow flows from the outside into the channel, through the channel and the exhaust vent, and then is discharged to the outside. By setting input and output magnetic components, when the rotor rotates, the rotor drives the input magnetic components to rotate. Utilizing the principle of magnetic acceleration, the input and output magnetic components interact, driving the heat dissipation turbine to rotate. The heat dissipation turbine generates a cooling airflow, allowing the external airflow to circulate with the airflow inside the motor, thereby improving the heat dissipation effect of the motor.

Description

Technical Field

[0001] This application belongs to the field of electrical technology, specifically relating to electric motors and aircraft. Background Technology

[0002] In the field of motors, external rotor brushless motors are commonly used as drive components for aircraft. External rotor brushless motors have the advantages of small size and high power. However, during operation, they generate a significant amount of heat, necessitating external cooling systems. For example, related technologies often use external fans for air cooling. However, external cooling systems are often ineffective at dissipating heat, leading to a higher risk of overheating and burnout. Utility Model Content

[0003] In view of this, the first aspect of this application provides an electric motor, the electric motor comprising: A power module includes a rotating shaft and a rotor. The rotor is sleeved on the rotating shaft, and the rotating shaft is used to drive the rotor to rotate. There is a channel connecting the rotor and the rotating shaft to the outside world. The rotor is provided with an exhaust port connecting the channel to the outside world. A heat dissipation module includes a heat dissipation turbine, multiple output magnetic components, and multiple input magnetic components. The heat dissipation turbine is sleeved on the rotating shaft and disposed within the channel. The multiple output magnetic components are disposed on the heat dissipation turbine, and the multiple input magnetic components are disposed on the rotor. The multiple output magnetic components and the multiple input magnetic components are all arranged around the rotating shaft. The rotor can drive the multiple input magnetic components to rotate, and the multiple input magnetic components drive the multiple output magnetic components and the cooling turbine to rotate. The cooling turbine is used to generate cooling airflow. The cooling airflow flows into the channel from the outside, flows through the channel and the exhaust port, and is then discharged to the outside.

[0004] The heat dissipation module further includes a magnetic conductive element, which is disposed between the output magnetic element and the input magnetic element and is arranged around the rotating shaft.

[0005] The ratio of the number of output magnetic components to the number of input magnetic components is 1:(1.5~5). And / or, the number of the magnetic conductors is the sum of the plurality of output magnetic conductors and the plurality of input magnetic conductors.

[0006] The heat dissipation module further includes a bracket, which is disposed between the output magnetic component and the input magnetic component and is arranged around the rotating shaft. The magnetic conductive component is disposed on the bracket.

[0007] The bracket is provided with a slot extending radially along the rotating shaft, and the magnetic conductor has a protruding block on its periphery, the slot being used to accommodate the block.

[0008] The cooling turbine includes a rotating part and a plurality of guide vanes. The rotating part is arranged around the rotating shaft, and the plurality of guide vanes are arranged at intervals on the outer periphery of the rotating part along the circumferential direction of the rotating shaft. The plurality of guide vanes are inclined. The rotating part has a receiving groove on the side facing the input magnetic component, and the plurality of output magnetic components and at least part of the bracket are disposed in the receiving groove.

[0009] The heat dissipation module also includes a base, which is located on the side of the bracket away from the output magnetic component and is arranged around the rotating shaft. The base is connected to the bracket. The heat dissipation module also includes a bearing sleeved on the base, the bearing being located between the heat dissipation turbine and the base.

[0010] The cooling turbine has a first connecting protrusion on its inner circumference near the bracket, and the first connecting protrusion is connected to the bearing. The heat dissipation module also includes a heat dissipation cover plate connected to the heat dissipation turbine. The heat dissipation cover plate is located on the side of the heat dissipation turbine away from the bracket. The inner circumferential side of the heat dissipation cover plate is provided with a second connecting protrusion, which is connected to the bearing.

[0011] The bracket has a clearance groove on the side facing the heat dissipation turbine, which is used to accommodate the first connecting protrusion.

[0012] A second aspect of this application provides an aircraft comprising a fuselage and a motor as described in the first aspect of this application, the motor being mounted on the fuselage.

[0013] The motor and aircraft provided in this application, by setting input magnetic components and output magnetic components, when the rotor rotates, the rotor drives the input magnetic components to rotate. Utilizing the principle of magnetic acceleration, the input magnetic components and output magnetic components interact, thereby driving the cooling turbine to rotate. The cooling turbine can form a cooling airflow, enabling the external airflow and the airflow inside the motor to circulate, thereby improving the heat dissipation effect of the motor. Furthermore, the heat dissipation module provided in this application does not require changing the external dimensions of the motor and is integrated inside the motor, making the motor structure compact and having the advantages of small size and low weight, which is especially suitable for the application of unmanned aerial vehicles. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the embodiments of this application will be described below.

[0015] Figure 1 This is a schematic diagram of the structure of a motor provided in one embodiment of this application.

[0016] Figure 2 An exploded view of the structure of an electric motor provided in one embodiment of this application.

[0017] Figure 3 This is a cross-sectional schematic diagram of a motor provided in one embodiment of this application.

[0018] Figure 4 This is a schematic diagram of the structure of the bracket and magnetic conductor provided in one embodiment of this application.

[0019] Figure 5 This is a schematic diagram of the structure of a heat dissipation module provided in one embodiment of this application.

[0020] Figure 6 This is a cross-sectional schematic diagram of a heat dissipation module provided in one embodiment of this application.

[0021] Labeling explanation: Motor 1, Power Module 10, Shaft 11, Rotor 12, Channel 13, Exhaust Port 14, Stator 15 Heat dissipation module 20, heat dissipation turbine 21, rotating part 211, receiving groove 2111, guide vane 212, first connecting protrusion 213, output magnetic component 22, input magnetic component 23, magnetic conductive component 24, card block 241, bracket 25, card slot 251, clearance groove 252, base 26, bearing 27, heat dissipation cover plate 28, second connecting protrusion 281. Detailed Implementation

[0022] The following are preferred embodiments of this application. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principles of this application, and these improvements and modifications are also considered to be within the scope of protection of this application.

[0023] In view of this, in order to solve the above problems, please refer to the following: Figures 1-3This embodiment provides a motor 1, which includes a power module 10 and a heat dissipation module 20. The power module 10 includes a rotating shaft 11 and a rotor 12. The rotor 12 is sleeved on the rotating shaft 11, and the rotating shaft 11 is used to drive the rotor 12 to rotate. There is a channel 13 connecting the rotor 12 and the rotating shaft 11 to the outside. The rotor 12 is provided with an exhaust port 14 connecting the channel 13 to the outside. The heat dissipation module 20 includes a heat dissipation turbine 21, a plurality of output magnetic components 22, and a plurality of input magnetic components 23. The heat dissipation turbine 21 is sleeved on the rotating shaft 11 and disposed in the channel 13. The plurality of output magnetic components 22 are disposed on the heat dissipation turbine 21, and the plurality of input magnetic components 23 are disposed on the rotor 12. The plurality of output magnetic components 22 and the plurality of input magnetic components 23 are all arranged around the rotating shaft 11.

[0024] The rotor 12 can drive the plurality of input magnetic components 23 to rotate, and the plurality of input magnetic components 23 drive the plurality of output magnetic components 22 and the cooling turbine 21 to rotate. The cooling turbine 21 is used to generate cooling airflow. The cooling airflow flows into the channel 13 from the outside, and flows through the channel 13 and the exhaust port 14 in sequence, and then is discharged to the outside.

[0025] The motor 1 provided in this embodiment can be applied to fields such as aircraft, manufacturing, home appliances, and construction, and this embodiment is not limited thereto. The motor 1 can be connected to a transmission structure and serve as a drive unit for the transmission structure to drive its operation.

[0026] The power module 10 includes a shaft 11, a rotor 12, and a stator 15. The rotor 12 and stator 15 are spaced apart along the axial direction of the shaft 11. The rotor 12 is connected to the shaft 11, and the stator 15 is spaced apart from the shaft 11. The shaft 11 is drively connected to the rotor 12, enabling the shaft 11 to rotate the rotor 12. The rotor 12 is the rotating part of the motor 1, and it interacts with the rotating magnetic field in the stator 15 to generate mechanical energy. The stator 15 is the stationary part of the motor 1, typically composed of a metal frame and several coils. The stator 15 includes an iron core and coils. The iron core is typically made of laminated silicon steel sheets to reduce eddy current losses, and the coils are wires wound in the slots of the iron core to generate a rotating magnetic field.

[0027] The motor 1 has a channel 13 that extends along the axial direction of the shaft 11. Optionally, the channel 13 can be formed by multiple components or by the cavity of a single component. Optionally, the channel 13 passes through the bottom of the motor 1 and connects to the outside.

[0028] The rotor 12 is provided with an exhaust port 14. Optionally, there are multiple exhaust ports 14, which are arranged at intervals along the circumferential direction of the rotating shaft 11. When the rotating shaft 11 drives the rotor 12 to rotate, the exhaust ports 14 rotate synchronously with the rotor 12.

[0029] The heat dissipation module 20 includes a heat dissipation turbine 21, multiple output magnetic elements 22, and multiple input magnetic elements 23. The heat dissipation turbine 21 is rotatable relative to the rotating shaft 11. The output magnetic elements 22 are magnetic and are located on the side of the heat dissipation turbine 21 facing the rotor 12. The input magnetic elements 23 are magnetic and are located on the side of the rotor 12 facing the heat dissipation turbine 21. Optionally, the number of input magnetic elements 23 is greater than the number of output magnetic elements 22, or the number of input magnetic elements 23 is equal to the number of output magnetic elements 22, or the number of input magnetic elements 23 is less than the number of output magnetic elements 22.

[0030] Optionally, the output magnetic component 22 is detachably connected to the cooling turbine 21. The connection method between the output magnetic component 22 and the cooling turbine 21 can be threaded connection, snap-fit, adhesive connection, etc., and this embodiment is not limited in this regard. Optionally, the output magnetic components 22 are arranged at intervals along the circumferential direction of the rotating shaft 11. Optionally, the input magnetic component 23 is detachably connected to the rotor 12. The connection method between the input magnetic component 23 and the rotor 12 can be threaded connection, snap-fit, adhesive connection, etc., and this embodiment is not limited in this regard. Optionally, the input magnetic components 23 are arranged at intervals along the circumferential direction of the rotating shaft 11. Optionally, the distance between the input magnetic component 23 and the axis of the rotating shaft 11 is equal to the distance between the output magnetic component 22 and the axis of the rotating shaft 11.

[0031] Specifically, the rotating shaft 11 drives the rotor 12 to rotate, and the rotor 12 drives the input magnetic component 23 to rotate synchronously. Utilizing the principle of magnetic acceleration, the input magnetic component 23 interacts with the output magnetic component 22, thereby enabling the output magnetic component 22 to drive the cooling turbine 21 to rotate. The cooling turbine 21 can generate cooling airflow. The flow direction of the cooling airflow is as follows: Figure 3 As shown in the middle direction D, the cooling airflow can flow from the outside into the channel 13 and the exhaust port 14, and then flow out to the outside. Alternatively, the cooling airflow can flow from the outside into the exhaust port 14 and the channel 13, and then flow out to the outside, thereby realizing the circulation of the outside airflow and the internal airflow of the motor 1, carrying away the heat inside the motor 1 and cooling the inside of the motor 1.

[0032] In summary, the motor 1 provided in this embodiment, by setting an input magnetic component 23 and an output magnetic component 22, when the rotor 12 rotates, the rotor 12 drives the input magnetic component 23 to rotate. Utilizing the principle of magnetic acceleration, the input magnetic component 23 and the output magnetic component 22 interact, thereby driving the cooling turbine 21 to rotate. The cooling turbine 21 can form a cooling airflow, enabling the external airflow and the internal airflow of the motor 1 to circulate, thereby improving the heat dissipation effect of the motor 1. Furthermore, the heat dissipation module 20 provided in this embodiment does not require changing the external dimensions of the motor 1 and is integrated inside the motor 1, making the motor 1 compact in structure and having the advantages of small size and low weight, which is especially suitable for applications in unmanned aerial vehicles.

[0033] Please refer to this as well. Figures 1-4 In one embodiment, the heat dissipation module 20 further includes a magnetic conductive element 24, which is disposed between the output magnetic element 22 and the input magnetic element 23 and surrounds the rotating shaft 11.

[0034] The magnetic guide element 24 is used to guide the magnetic field lines, reduce magnetic resistance, and improve magnetic field efficiency. When the rotor 12 and the cooling turbine 21 rotate, the magnetic guide element 24 does not rotate. Optionally, there can be multiple magnetic guide elements 24, which are arranged at intervals along the circumferential direction of the rotating shaft 11. Optionally, the distance between the magnetic guide element 24 and the axis of the rotating shaft 11 is equal to the distance between the input magnetic element 23 and the axis of the rotating shaft 11, and the distance between the magnetic guide element 24 and the axis of the rotating shaft 11 is equal to the distance between the output magnetic element 22 and the axis of the rotating shaft 11.

[0035] Specifically, the ratio of the number of output magnetic components 22 to the number of input magnetic components 23 is 1:(1.5~5), and can be exemplified as 1:1.5, or 1:2, or 1:2.5, or 1:3, or 1:3.5, or 1:4, or 1:4.5, or 1:5, etc.

[0036] For example, the output magnetic element 22 has 6 pole pairs, and the input magnetic element 23 has 12 pole pairs. In other words, the ratio of the number of output magnetic elements 22 to the number of input magnetic elements 23 is 1:2.

[0037] And / or, the number of the magnetic conductors 24 is the sum of the plurality of output magnetic conductors 22 and the plurality of input magnetic conductors 23.

[0038] For example, the output magnetic component 22 has 6 pole pairs, the input magnetic component 23 has 12 pole pairs, and the magnetic conductor 24 has 18 pole pairs.

[0039] When the input magnetic component 23 rotates once, the magnetic force is transmitted through the magnetic conductor 24, causing the output magnetic component 22 to rotate twice. That is, when the rotor 12 of the motor 1 drives the input magnetic component 23 to rotate once, the output magnetic component 22 and the cooling turbine 21 rotate twice. This can achieve the goal of accelerating the rotation of the cooling turbine 21 by rotating the rotor 12, thereby pressurizing the airflow inside the motor 1, increasing the cooling airflow velocity, and further improving the heat dissipation effect of the motor 1.

[0040] Furthermore, the motor 1 under different operating conditions can adjust the number of input magnetic components 23, magnetic conductors 24, and output magnetic components 22 to make the rotor 12 and the cooling turbine 21 rotate at different speeds, thereby further increasing the cooling airflow velocity and further improving the heat dissipation effect on the motor 1.

[0041] Therefore, by providing a magnetic guide 24 between the output magnetic component 22 and the input magnetic component 23, this embodiment increases the magnetic field force between the input magnetic component 23 and the output magnetic component 22, which helps to ensure the rotational reliability of the cooling turbine 21, improves the rotational speed of the cooling turbine 21, and enhances the heat dissipation effect of the cooling turbine 21.

[0042] Please refer to this as well. Figures 1-4 In one embodiment, the heat dissipation module 20 further includes a bracket 25, which is disposed between the output magnetic component 22 and the input magnetic component 23 and surrounds the rotating shaft 11. The magnetic conductive component 24 is disposed on the bracket 25.

[0043] When the rotor 12 and the cooling turbine 21 rotate, the bracket 25 does not rotate. Optionally, the magnetic conductor 24 is detachably connected to the bracket 25. The connection method between the magnetic conductor 24 and the bracket 25 can be threaded, snap-fit, adhesive, etc., and this embodiment is not limited in this respect. Optionally, the bracket 25 is sleeved on the rotating shaft 11. Optionally, the magnetic conductor 24 is embedded in the bracket 25.

[0044] Furthermore, the bracket 25 is provided with a slot 251 extending radially along the rotating shaft 11, and a block 241 protrudes from the periphery of the magnetic conductor 24, the slot 251 being used to accommodate the block 241.

[0045] The locking block 241 is disposed in the locking slot 251 so that the magnetic conductor 24 is engaged with the bracket 25. Optionally, the bracket 25 is provided with an assembly slot, which extends through the bracket 25 along the axis of the rotating shaft 11 and also extends through the outer peripheral side of the bracket 25. The magnetic conductor 24 is disposed in the assembly slot.

[0046] Optionally, the card slot 251 includes a first sub-slot and a second sub-slot, the first sub-slot being located on one side wall of the assembly slot and the second sub-slot being located on the other side wall of the assembly slot, the first sub-slot and the second sub-slot being arranged opposite to each other, and the card block 241 includes a first sub-block and a second sub-block, the first sub-block being located on one side wall of the magnetic conductor 24 and the second sub-block being located on the other side wall of the magnetic conductor 24.

[0047] Therefore, this embodiment improves the reliability of the motor 1 by setting the bracket 25 to fix the magnetic conductor 24. Furthermore, the magnetic conductor 24 is detachably mounted on the bracket 25 so that the number of magnetic conductors 24 mounted on the bracket 25 can be changed according to different working conditions, thereby adjusting the speed of the cooling turbine 21 and improving the heat dissipation effect of the cooling turbine 21.

[0048] Please refer to this as well. Figures 1-6 In one embodiment, the cooling turbine 21 includes a rotating part 211 and a plurality of guide vanes 212. The rotating part 211 is arranged around the rotating shaft 11, and the plurality of guide vanes 212 are arranged at intervals on the outer periphery of the rotating part 211 along the circumferential direction of the rotating shaft 11. The plurality of guide vanes 212 are inclined.

[0049] The rotating part 211 has a receiving groove 2111 on the side facing the input magnetic component 23, and the plurality of output magnetic components 22 and at least part of the bracket 25 are disposed in the receiving groove 2111.

[0050] The cooling turbine 21 includes a rotating part 211 and guide vanes 212. The guide vanes 212 can also be understood as fan blades. The rotating part 211 is annular and is sleeved on the rotating shaft 11. Optionally, the multiple guide vanes 212 have the same inclination direction. The multiple guide vanes 212 are arranged at equal intervals along the circumferential direction of the rotating shaft 11.

[0051] Specifically, when the cooling turbine 21 rotates, the rotating part 211 rotates relative to the rotating shaft 11, and the rotating part 211 drives multiple guide vanes 212 to rotate synchronously, and the multiple guide vanes 212 can form a cooling airflow.

[0052] Furthermore, the rotating part 211 is provided with a receiving groove 2111, and multiple output magnetic components 22 are disposed within the receiving groove 2111. Optionally, the output magnetic components 22 are detachably connected to the groove wall of the receiving groove 2111. The connection method between the output magnetic components 22 and the groove wall of the receiving groove 2111 can be threaded connection, snap-fit, adhesive connection, etc., and this embodiment is not limited in this respect. Optionally, the receiving groove 2111 is an annular groove. For example, part of the bracket 25 is disposed within the receiving groove 2111, and another part of the bracket 25 is disposed outside the receiving groove 2111. Or, for example, the entire bracket 25 is disposed within the receiving groove 2111.

[0053] Therefore, this embodiment has a simple and reliable structure by setting the rotating part 211 and the guide plate 212, which can stably form a cooling airflow, thereby improving the reliability of the heat dissipation module 20. In addition, the output magnetic component 22 and at least part of the bracket 25 are set in the receiving groove 2111, which improves the space utilization rate, helps to reduce the overall size of the motor 1, and optimizes the layout.

[0054] Please refer to this as well. Figures 1-6 In one embodiment, the heat dissipation module 20 further includes a base 26, which is located on the side of the bracket 25 away from the output magnetic element 22 and is arranged around the rotating shaft 11. The base 26 is connected to the bracket 25.

[0055] The heat dissipation module 20 also includes a bearing 27 sleeved on the base 26, the bearing 27 being located between the heat dissipation turbine 21 and the base 26.

[0056] The base 26 is fitted onto the rotating shaft 11. When the rotor 12 and the cooling turbine 21 rotate, the base 26 does not rotate. Optionally, the base 26 is detachably connected to the bracket 25. The connection method between the base 26 and the bracket 25 can be threaded, snap-fit, adhesive, etc., and this embodiment is not limited in this regard. Optionally, the base 26 includes a first part and a second part that are bent together. The first part is arranged around the rotating shaft 11, and the second part extends radially along the rotating shaft 11.

[0057] The bearing 27 supports the cooling turbine 21, enabling it to rotate stably, reducing friction between the turbine 21 and the shaft 11, and improving the reliability of the cooling module 20. The inner circumference of the bearing 27 is connected to the base 26. Optionally, the bearing 27 is fitted onto the first part of the base 26. Further optionally, the first part has a mounting groove, and part of the bearing 27 is disposed within the mounting groove.

[0058] Therefore, by providing a base 26 and a bearing 27, this embodiment ensures that the heat dissipation turbine 21 can rotate stably, thereby improving the reliability of the heat dissipation module 20.

[0059] Please refer to this as well. Figures 1-6 In one embodiment, the heat dissipation turbine 21 is provided with a first connecting protrusion 213 on the inner circumferential side near the bracket 25, and the first connecting protrusion 213 is connected to the bearing 27.

[0060] The heat dissipation module 20 also includes a heat dissipation cover plate 28 connected to the heat dissipation turbine 21. The heat dissipation cover plate 28 is located on the side of the heat dissipation turbine 21 away from the bracket 25. The inner circumferential side of the heat dissipation cover plate 28 is provided with a second connecting protrusion 281, which is connected to the bearing 27.

[0061] The first connecting protrusion 213 and the second connecting protrusion 281 are drively connected to the outer periphery of the bearing 27. The cooling turbine 21 can rotate relative to the bearing 27. The rotating part 211 of the cooling turbine 21 is provided with the first connecting protrusion 213.

[0062] Optionally, the heat dissipation cover 28 is detachably connected to the heat dissipation turbine 21. The connection method between the heat dissipation cover 28 and the heat dissipation turbine 21 can be threaded connection, snap-fit ​​connection, adhesive connection, etc., and this embodiment is not limited in this respect. The heat dissipation cover 28 is connected to the rotating part 211 of the heat dissipation turbine 21. The heat dissipation cover 28 is disposed between the heat dissipation turbine 21 and the second part. Optionally, the heat dissipation turbine 21 can drive the heat dissipation cover 28 to rotate synchronously.

[0063] Furthermore, the bracket 25 is provided with a relief groove 252 on the side facing the heat dissipation turbine 21, and the relief groove 252 is used to accommodate the first connecting protrusion 213.

[0064] For example, some of the first connecting protrusions 213 are disposed within the clearance groove 252. Alternatively, all of the first connecting protrusions 213 are disposed within the clearance groove 252.

[0065] Therefore, this embodiment provides a heat dissipation cover plate 28 so that the heat dissipation turbine 21 is fixed to the outer periphery of the bearing 27. The structure of the first connecting protrusion 213 and the second connecting protrusion 281 is simple, easy to install, stable and reliable, so as to ensure that the heat dissipation turbine 21 can rotate stably, thereby improving the reliability of the heat dissipation module 20.

[0066] In addition, the bracket 25 is also provided with a clearance groove 252 to avoid the first connecting protrusion 213, which improves the space utilization, helps to reduce the overall size of the motor 1, and optimizes the layout.

[0067] This application also provides an aircraft, which includes a fuselage and a motor as described above, the motor being mounted on the fuselage.

[0068] The aircraft provided in this embodiment adopts the motor provided in this application. The motor is equipped with an input magnetic component and an output magnetic component. When the rotor rotates, the rotor drives the input magnetic component to rotate. Utilizing the principle of magnetic acceleration, the input magnetic component and the output magnetic component interact, thereby driving the cooling turbine to rotate. The cooling turbine can form a cooling airflow, which allows the external airflow and the internal airflow of the motor to circulate, thereby improving the heat dissipation effect of the motor. Furthermore, the heat dissipation module provided in this application does not require changing the external dimensions of the motor and is integrated inside the motor, making the motor structure compact and having the advantages of small size and low weight, which is especially suitable for the application of unmanned aerial vehicles.

[0069] Unless otherwise stated or in case of conflict, the terms or phrases used in this application shall have the following meanings: In this application, terms such as "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature.

[0070] In this application, "one or more" refers to any one, any two, or any two or more of the listed items. "Several" refers to any two or more.

[0071] In this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0072] In this application, 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 part. 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, or the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0073] In this application, the terms "embodiment" and "implementation" mean that a specific feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of this application. The appearance of these phrases in various locations throughout the specification does not necessarily refer to the same embodiment, nor are they independent or alternative embodiments mutually exclusive with other embodiments. Those skilled in the art will understand, explicitly and implicitly, that the embodiments described in this application can be combined with other embodiments. Furthermore, it should be understood that the features, structures, or characteristics described in the various embodiments of this application can be arbitrarily combined to form yet another embodiment that does not depart from the spirit and scope of the technical solution of this application, provided there is no contradiction between them.

[0074] The above description represents some embodiments of this application. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this application, and these improvements and modifications are also considered to be within the scope of protection of this application.

Claims

1. An electric motor, characterized in that, The motor includes: A power module includes a rotating shaft and a rotor. The rotor is sleeved on the rotating shaft, and the rotating shaft is used to drive the rotor to rotate. There is a channel connecting the rotor and the rotating shaft to the outside world. The rotor is provided with an exhaust port connecting the channel to the outside world. A heat dissipation module includes a heat dissipation turbine, multiple output magnetic components, and multiple input magnetic components. The heat dissipation turbine is sleeved on the rotating shaft and disposed within the channel. The multiple output magnetic components are disposed on the heat dissipation turbine, and the multiple input magnetic components are disposed on the rotor. The multiple output magnetic components and the multiple input magnetic components are all arranged around the rotating shaft. The rotor can drive the multiple input magnetic components to rotate, and the multiple input magnetic components drive the multiple output magnetic components and the cooling turbine to rotate. The cooling turbine is used to generate cooling airflow. The cooling airflow flows into the channel from the outside, flows through the channel and the exhaust port, and is then discharged to the outside.

2. The motor as described in claim 1, characterized in that, The heat dissipation module also includes a magnetic conductive element, which is disposed between the output magnetic element and the input magnetic element and is arranged around the rotating shaft.

3. The motor as described in claim 2, characterized in that, The ratio of the number of output magnetic components to the number of input magnetic components is 1:(1.5~5). And / or, the number of the magnetic conductors is the sum of the plurality of output magnetic conductors and the plurality of input magnetic conductors.

4. The motor as described in claim 2, characterized in that, The heat dissipation module also includes a bracket, which is disposed between the output magnetic component and the input magnetic component and is arranged around the rotating shaft, and the magnetic conductive component is disposed on the bracket.

5. The motor as described in claim 4, characterized in that, The bracket is provided with a slot extending radially along the rotating shaft, and a locking block protrudes from the periphery of the magnetic conductive element. The slot is used to accommodate the locking block.

6. The motor as described in claim 4, characterized in that, The cooling turbine includes a rotating part and a plurality of guide vanes. The rotating part is arranged around the rotating shaft, and the plurality of guide vanes are arranged at intervals on the outer periphery of the rotating part along the circumferential direction of the rotating shaft. The plurality of guide vanes are inclined. The rotating part has a receiving groove on the side facing the input magnetic component, and the plurality of output magnetic components and at least part of the bracket are disposed in the receiving groove.

7. The motor as described in claim 4, characterized in that, The heat dissipation module also includes a base, which is located on the side of the bracket away from the output magnetic component and is arranged around the rotating shaft. The base is connected to the bracket. The heat dissipation module also includes a bearing sleeved on the base, the bearing being located between the heat dissipation turbine and the base.

8. The motor as described in claim 7, characterized in that, The cooling turbine has a first connecting protrusion on its inner circumference near the bracket, and the first connecting protrusion is connected to the bearing. The heat dissipation module also includes a heat dissipation cover plate connected to the heat dissipation turbine. The heat dissipation cover plate is located on the side of the heat dissipation turbine away from the bracket. The inner circumferential side of the heat dissipation cover plate is provided with a second connecting protrusion, which is connected to the bearing.

9. The motor as described in claim 8, characterized in that, The bracket has a clearance groove on the side facing the heat dissipation turbine, and the clearance groove is used to accommodate the first connecting protrusion.

10. An aircraft, characterized in that, The aircraft includes a fuselage and a motor as described in any one of claims 1-9, the motor being mounted on the fuselage.

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