CN114148530A

CN114148530A - Power device and flight equipment

Info

Publication number: CN114148530A
Application number: CN202010919211.0A
Authority: CN
Inventors: 罗东东; 张德虎
Original assignee: Fengyi Technology Shenzhen Co ltd
Current assignee: Fengyi Technology Shenzhen Co ltd
Priority date: 2020-09-04
Filing date: 2020-09-04
Publication date: 2022-03-08

Abstract

The application discloses power device and flight equipment. The power device drives a propeller of a flight device for vertical take-off and landing, a first end of a motor shaft of the power device is fixedly connected with a signal transmitter, the signal transmitter generates a sensing signal, a second end of the motor shaft is fixedly connected with the propeller, a sensor receives the sensing signal in real time, the stop position of the motor shaft is determined according to the sensing signal when the rotating speed of the motor shaft is reduced to 0, a position signal corresponding to the stop position is generated and transmitted to a control chip, and the control chip controls a winding stator to drive the motor shaft to rotate to a preset target position according to the position signal; the target position is the position where the air resistance of the propeller is the minimum when the flight equipment flies flatly, so that the air resistance when the flight equipment flies flatly is reduced, the time or range of the flight equipment is further improved, and the cargo capacity of the flight equipment does not need to be reduced.

Description

Power device and flight equipment

Technical Field

The invention relates to the field of aerospace, in particular to a power device and flight equipment.

Background

With the progress of society, flight equipment is more and more popular, and the mode that adopts flight equipment (for example unmanned aerial vehicle) to transport article is also more and more popular, therefore flight equipment's time of endurance (for short time of endurance) or distance of endurance (for short range of endurance) are receiving attention. In the prior art, the time of flight or the range of flight equipment is usually improved by expanding the capacity of a battery, but the weight of the battery is increased by expanding the capacity of the battery, so that the weight of the flight equipment is increased when the flight equipment takes off, the energy density and the discharge rate of the battery are limited, and the cargo capacity needs to be reduced in order to ensure the discharge rate of the battery when the flight equipment takes off.

Disclosure of Invention

The application provides a power device and flight equipment to solve prior art and improve flight equipment's time of flight or journey and reduce the problem of cargo capacity through the battery capacity that increases flight equipment.

In one aspect, the present application provides a power device for a flying apparatus to drive a propeller of the flying apparatus for vertical take-off and landing, comprising: the winding machine comprises a machine shell, a winding stator, a rotor assembly, an inductor and a control chip, wherein the control chip is connected with the inductor and the winding stator;

the rotor assembly comprises a motor shaft which is rotatably connected with the shell and a signal transmitter which is fixedly connected with a first end of the motor shaft; the second end of the motor shaft is fixedly connected with the propeller; the signal emitter generates an induction signal;

the inductor is arranged in the shell and used for receiving the induction signal, determining the stop position of the motor shaft according to the induction signal when the rotating speed of the motor shaft is reduced to 0, generating a position signal corresponding to the stop position and transmitting the position signal to the control chip;

the control chip is arranged in the shell and used for controlling the winding stator to drive the motor shaft to rotate to a preset target position according to the position signal; the target position is the position where the air resistance of the propeller is the minimum when the flight equipment flies horizontally.

In some possible implementation manners, the control chip is configured to determine whether the stop position is consistent with the target position according to the position signal;

if the stop position is inconsistent with the target position, the control chip outputs a control signal to the winding stator to drive the motor shaft to rotate to the target position;

if the stop position is consistent with the target position, the control chip outputs a locking signal to the winding stator to lock the motor shaft at the target position.

In some possible implementations, the sensing signal sequentially corresponds to a plurality of sensing positions of the sensor when the signal transmitter rotates along with the motor shaft for one circle; the strength of the induction signal received by each induction position is different;

and when the rotating speed of the motor shaft is reduced to 0, the inductor determines the stop position of the motor shaft according to the strength of the induction signal.

In some possible implementations, the signal emitter is a first magnet, the induced signal is a magnetic field, and the inductor is a magnetic encoder;

and when the rotating speed of the motor shaft is reduced to 0, the magnetic encoder converts the strength of the magnetic field into voltage, and determines the stop position of the motor shaft according to the value of the voltage.

In some possible implementations, the sensor is located below the first end of the motor shaft and is disposed opposite the signal emitter.

In some possible implementations, the spacing between the inductor and the signal emitter is 0.5mm-1.0 mm.

In some possible implementations, the rotor assembly further includes a first end cap fixedly connected to the motor shaft, a housing fixedly connected to the first end cap, and a plurality of second magnets fixedly connected to a side of the housing facing the motor shaft; the plurality of second magnets surrounds the winding stator.

In some possible implementations, the casing includes a support frame and a second end cover fixedly connected to the support frame;

the supporting frame is provided with a hollow protruding part, and the winding stator is sleeved on the protruding part;

the first end of the motor shaft penetrates through the bulge part and extends to the outside of the support frame;

the rotor assembly also comprises at least one bearing which is positioned inside the bulge part and is sleeved on the motor shaft; the outer ring of the bearing is fixedly connected with the protruding portion, and the inner ring of the bearing is fixedly connected with the motor shaft.

In some possible implementations, the rotor assembly further includes a fixing portion fixedly connected to the first end of the motor shaft, and the signal emitter is fixed to an end of the fixing portion away from the motor shaft.

In some possible implementations, an end of the fixing portion, which is away from the motor shaft, is provided with a receiving groove, and the signal emitter is located in the receiving groove.

In some possible implementations, the rotor assembly further includes at least one spacer located between the fixing portion and the support frame, and the spacer is sleeved on the motor shaft.

In some possible implementations, the rotor assembly further includes a snap ring located between the spacer and the fixing portion, and the snap ring is sleeved on the motor shaft.

In another aspect, the present application further provides a flying apparatus, which includes a horn, a power device as described above connected to the horn, and a propeller connected to the power device for vertical take-off and landing.

According to the power device, the signal emitter is fixedly connected to the first end of the motor shaft, the signal emitter generates the sensing signal, the propeller is fixedly connected to the second end of the motor shaft, the sensor receives the sensing signal in real time, the stop position of the motor shaft is determined according to the sensing signal when the rotating speed of the motor shaft is reduced to 0, a position signal corresponding to the stop position is generated and transmitted to the control chip, the control chip obtains the stop position of the motor shaft according to the position signal, and the winding stator is controlled to drive the motor shaft to rotate to a preset target position; the target position is the position that air resistance that the screw received is minimum when flight equipment is flat flown to reduce the air resistance that flight equipment received when flat flown, and then improve flight equipment's time of flight or journey, compare in prior art and adopt the mode of extension battery capacity to improve flight equipment's time of flight or journey, this application has not increased power device's self weight, can reduce the air resistance that flight equipment received when flat flown again, can improve flight equipment's time of flight or journey on the basis of not reducing flight equipment volume of loading.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a front exploded view of a power plant provided in an embodiment of the present application;

FIG. 2 is a reverse exploded view of a power plant provided by an embodiment of the present application;

FIG. 3 is a cross-sectional view of a power plant provided by an embodiment of the present application;

FIG. 4 is a schematic front view of a printed circuit board of a power plant provided by an embodiment of the present application;

FIG. 5 is a schematic diagram of a reverse side of a printed circuit board of a power plant provided by an embodiment of the present application;

FIG. 6 is a front view of a horn of a flying apparatus provided by an embodiment of the present application;

fig. 7 is a top view of a horn of a flight device provided in an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

The power device of the application can be applied to flight equipment, and the flight equipment further comprises a propeller for vertical take-off and landing, a propeller for horizontal flight and a horizontal flight motor for driving the propeller for horizontal flight. The power device of the application is used as a vertical take-off and landing motor to drive a propeller for vertical take-off and landing. This flight equipment is when the state of taking off perpendicularly, the horizontal flight motor does not start, the power device of this application starts, the drive is used for the screw rotation of VTOL, flight equipment begins to rise, after flight equipment reachs a take-off height, the horizontal flight motor starts, the drive is used for the screw rotation of horizontal flight, get into the state of flying flatly (the straight line flight of horizontal direction promptly), at this moment, the power device stop work of this application makes the motor shaft stall, so that use also stall for the screw of VTOL, in order to save flight equipment electric quantity. In addition, the power device can drive the propeller for vertical take-off and landing to the target position when the propeller for vertical take-off and landing is not located at the target position, and the target position is the position where the air resistance of the propeller for vertical take-off and landing is the minimum when the flight equipment is in flat flight, so that the air resistance of the flight equipment in flat flight is reduced, and the flight time or flight range of the flight equipment is improved.

The method is further explained by combining a formula P ═ T × V/η of the power needed by the flight equipment for flying: p is the power required by flight, T is the air resistance during flight, V is the flight speed, eta is the propeller efficiency for horizontal flight, when the flight equipment flies horizontally, the propeller efficiency and the flight speed for horizontal flight are kept unchanged, and when the air resistance is increased, the power required by flight is increased. Therefore, when the flying equipment flies flatly, on the basis that the cargo capacity is unchanged, the power device reduces the air resistance, thereby reducing the required power of the flying equipment and further improving the flight time or the flight range of the flying equipment. Compared with the prior art that the mode of expanding battery capacity is adopted to improve the time of flight or the journey of flight equipment, the weight of power device (flight equipment) itself has not been increased in this application, can reduce the air resistance that receives when flight equipment flies flatly again, can improve the time of flight or the journey of flight equipment on the basis of not reducing flight equipment cargo capacity.

Referring to fig. 1 to 3, in an embodiment of the present application, a power device is provided for a flight apparatus to drive a propeller of the flight apparatus for vertical take-off and landing. The power device comprises: the motor comprises a machine shell 10, a winding stator 20, a rotor assembly 30, an inductor 40 and a control chip 50 connected with the inductor 40 and the winding stator 20;

the rotor assembly 30 comprises a motor shaft 31 rotatably connected with the housing 10, and a signal transmitter 32 fixedly connected with a first end of the motor shaft 31; the second end of the motor shaft 31 is fixedly connected with the propeller for vertical take-off and landing; the signal emitter 32 generates an induction signal;

the sensor 40 is disposed inside the casing 10, and is configured to receive the sensing signal, when the rotating speed of the motor shaft 31 is reduced to 0, the sensor 40 determines a stop position of the motor shaft 31 according to the sensing signal, generates a position signal corresponding to the stop position, and transmits the position signal to the control chip 50;

the control chip 50 is arranged inside the casing 10 and is used for controlling the winding stator 20 to drive the motor shaft 31 to rotate to a preset target position according to the position signal; the target position is the position where the air resistance of the propeller is the minimum when the flight equipment flies horizontally.

It should be noted that, the power device of the present application is characterized in that the signal emitter 32 is fixedly connected to the first end of the motor shaft 31, the signal emitter 32 generates the sensing signal, the second end of the motor shaft 31 is fixedly connected to the propeller for vertical lifting, the sensor 40 receives the sensing signal in real time, the stop position of the motor shaft 31 is determined according to the sensing signal when the rotating speed of the motor shaft 31 is reduced to 0 (i.e. the sensor 40 only determines the stop position when the rotating speed of the motor shaft 31 is reduced from not 0 to 0, namely the stop position corresponds to the situation that the motor shaft 31 stops rotating after the flying equipment enters a flat flying state from vertical takeoff, but does not correspond to the situation that the flying equipment does not take off yet), generating a position signal corresponding to the stop position, transmitting the position signal to the control chip 50, obtaining the stop position of the motor shaft 31 by the control chip 50 according to the position signal, and controlling the winding stator 20 to drive the motor shaft 31 to rotate to a preset target position; the target position is the position where the air resistance of the propeller is the minimum when the flight equipment flies flatly, so that the air resistance when the flight equipment flies flatly is reduced, and the time or range of the flight equipment is further improved. In addition, when the flying equipment flies flatly, if the inductor 40 fails, normal flight of the flying equipment cannot be influenced, and when the flying equipment needs to restart to fly after landing, the flying equipment performs self-checking and detects that the inductor 40 fails, the self-checking fails, and the flying equipment cannot take off, so that the flying equipment is prevented from taking off when the inductor 40 fails, and the reliability of the flying equipment is improved.

In some embodiments, the battery of the flight device may supply power to the power device, that is, the winding stator 20, the inductor 40, and the control chip 50 may control the magnitude of the current accessed by the winding stator 20 to adjust the rotation speed and the rotation position of the motor shaft 31. The control signal may be a first ac signal output by the control chip 50, and the control chip 50 drives the motor shaft 31 to rotate to the target position by controlling the magnitude of the first ac signal received by the winding stator 20.

In some embodiments, the propeller may be a propeller having two blades, and the position where the propeller experiences the least air resistance is where the length direction of the two blades is parallel to (coincident with) the flight direction of the flight device. In addition, if the propeller is a propeller having three or more blades, the position at which the propeller receives the least air resistance is the position at which the sum of the frontal areas of all the blades is the smallest.

In some embodiments, the control chip 50 is configured to determine whether the stop position is consistent with the target position according to the position signal (the position signal may be a voltage signal or a current signal, or may be other signals, and the position signal may be specifically set according to an actual situation, which is not limited herein);

if the stop position is not consistent with the target position, the control chip 50 outputs a control signal to the winding stator 20 to drive the motor shaft 31 to rotate to the target position;

if the stop position is consistent with the target position, the control chip 50 outputs a locking signal to the winding stator 20 to lock the motor shaft 31 at the target position.

Since the motor shaft 31 rotates to the target position, even if the rotation speed is 0, the propeller is influenced by wind force or other external force, and the motor shaft 31 rotates, if the stop position is consistent with the target position (i.e. the motor shaft 31 rotates to the target position), the control chip 50 outputs a locking signal to the winding stator 20 to lock the motor shaft 31 at the target position (for example, the locking signal may be a second alternating current signal output by the control chip 50, and the control chip 50 controls the magnitude of the second alternating current signal received by the winding stator 20, so that the rotating force generated by the motor shaft 31 of the stator assembly 30 corresponding to the second alternating current signal can be offset with the wind force or other external force received by the propeller), thereby ensuring that the propeller is always at the position with the minimum air resistance.

In some embodiments, a logic program may be pre-recorded in the control chip 50, and whether the stop position is consistent with the target position is determined by the logic program (for example, the control chip 50 may be a programmable logic chip, the logic program is pre-recorded in the programmable logic chip, a target signal value corresponding to the target position is preset in the logic program, after the control chip 50 receives the position signal, the logic program may compare the magnitude of the position signal with the magnitude of the target signal value, and if the magnitude of the position signal is different, obtain a result that the stop position is inconsistent with the target position, and if the magnitude of the stop position is the same, obtain a result that the stop position is consistent with the target position, or the logic program may subtract the magnitude of the position signal from the magnitude of the target signal value to obtain a difference, and if the difference is not 0, obtain a result that the stop position is inconsistent with the target position, and if the difference is 0, obtaining the result that the stop position is consistent with the target position. Of course, the control chip 50 may also perform other determination methods, and the present application is not limited thereto), if the stop position does not coincide with the target position, the logic program then calculates a rotation angle difference between the stop position and the target position, outputs a control signal corresponding to the rotation angle difference to the winding stator 20 to drive the motor shaft 31 to rotate to the target position, and if the stop position coincides with the target position, that is, the logic program calculates the rotation angle difference between the stop position and the target position to be 0, outputs a locking signal to the winding stator 20 to lock the motor shaft 31 at the target position. That is, in the present application, the control of the rotation of the motor shaft 31 to the target position can be realized by burning the logic program in the control chip 50, and the improvement of the flight time and the flight distance of the flight device can be realized on the basis of saving the cost without adding excessive hardware devices.

In some embodiments, the sensor 40 may be a sensor having a plurality of sensing positions, and when the sensor 40 receives the sensing signal, different position signals are generated according to different sensing positions corresponding to the sensing signal.

Further, the sensing signal sequentially corresponds to a plurality of sensing positions of the sensor 40 when the signal emitter 32 rotates along with the motor shaft 31 for one turn (for example, the sensing signal may be a magnetic field, and the magnetic field also rotates when the signal emitter 32 rotates, and corresponds to the plurality of sensing positions during the rotation, or the sensing signal may be an optical signal, and the signal emitter 32 emits an optical signal from its edge, and the optical signal also rotates when the signal emitter 32 rotates, and corresponds to the plurality of sensing positions during the rotation). That is to say, in the process of one rotation of the signal transmitter 32, each time the signal transmitter rotates by a preset angle, the sensing signal corresponds to one sensing position of the sensor 40, and the preset angle may be determined according to the sensing sensitivity of the sensor 40, for example, an angle such as 1 °, 1.5 °, or 2 °, and the application is not limited herein;

the strength of the induction signal received by each induction position is different; the sensor 40 determines the stop position of the motor shaft 31 according to the intensity of the sensing signal when the rotating speed of the motor shaft 31 decreases to 0. That is, the present application can improve the accuracy of measuring the position of the motor shaft 31 by fixing the signal emitter 32 on the motor shaft 31 to rotate simultaneously with the motor shaft 31 and determining the position of the motor shaft 31 through the sensing signal generated by the signal emitter 32.

In addition, it can also be understood that: the signal transmitter 32 has a reference point (i.e., an initial position of the motor shaft 31) for transmitting the sensing signal, and the strength of the sensing signal received by the sensor 40 is different every time the reference point rotates a preset angle in a circle, so that the rotation angle of the reference point can be determined according to the strength of the sensing signal, and the rotation angle of the reference point corresponds to the rotation angle of the motor shaft 31, thereby determining the stop position of the motor shaft 31.

Further, the signal emitter 32 is a first magnet, the induced signal is a magnetic field, and the inductor 40 is a magnetic encoder; the magnetic encoder converts the intensity of the magnetic field into a voltage when the rotating speed of the motor shaft 31 decreases to 0, and determines the stop position of the motor shaft 31 based on the value of the voltage. That is, when the N pole and the S pole of the first magnet rotate, the generated magnetic field also rotates, when the magnetic field rotates once by the first magnet, the strength of the magnetic field received by the magnetic encoder is different every time the magnetic field rotates by a preset angle, the magnetic encoder converts the strength of the magnetic field into a voltage through the hall effect (that is, when the magnetic encoder rotates by a preset angle, the position signal is a voltage, the magnetic encoder has a metal or semiconductor material sheet inside, and after the magnetic encoder is powered on and is in the magnetic field, a potential difference is generated between two ends of the sheet), and then the motor shaft 31 corresponds to a voltage every time the motor shaft 31 rotates by a preset angle, so that the stop position of the motor shaft 31 can be determined according to the voltage value (for example, when the motor shaft 31 rotates by a circle, the voltage corresponds to 0 ° -360 ° and is 1 μ V-361 μ V, and when the voltage measured by the magnetic encoder is 181 μ V, it can be determined that the motor shaft 31 rotates by 180 °, the stop position is the position that the motor shaft 31 rotates 180 degrees), so that the position measurement of the motor shaft 31 can be realized only by additionally arranging the first magnet and the magnetic encoder in the power device, the cost is low, and the position measurement accuracy is high.

Specifically, the material of the first magnet may be ferrite, alnico, neodymium iron boron or samarium cobalt, and certainly, may also be other materials, and the application is not limited herein. In addition, the magnetic performance of the sintered neodymium iron boron is extremely excellent and stable, and the first magnet made of the sintered neodymium iron boron material is preferably adopted.

In some embodiments, referring to fig. 1 and 3, the sensor 40 is located below the first end of the motor shaft 31 and is disposed opposite to the signal emitter 32 (i.e., as shown in fig. 3, the side with the largest area of the sensor 40 is disposed opposite to the signal emitter 32), so that only one sensor 40 can receive the sensing signal when the signal emitter 32 rotates 360 °, and the reliability of the measurement is improved. Of course, the inductor 40 may be disposed on a side surface of the first end of the motor shaft 31 (that is, the inductor 40 shown in fig. 3 is erected to have a surface with a largest area facing the signal transmitter 32), but in this case, two inductors 40 need to be disposed on two sides of the first end of the motor shaft 31 respectively, so that the signal transmitter 32 can receive the induction signal when rotating 360 degrees, and therefore, the inductor 40 is preferably disposed below the first end of the motor shaft 31 and opposite to the signal transmitter 32.

Further, the distance between the sensor 40 and the signal emitter 32 is 0.5mm-1.0mm, and the distance enables the sensor 40 to receive sensing signals with different intensities when the signal emitter 32 rotates 360 degrees, which is beneficial to improving the reliability of position measurement. If the distance is less than 0.5mm, the distance between the sensor 40 and the signal emitter 32 is too close, which easily causes the sensor 40 to be saturated, so that the sensor 40 cannot measure the intensity variation of the sensing signal, and if the distance is greater than 1.0mm, the distance between the sensor 40 and the signal emitter 32 is too far, which easily causes the measurement precision of the sensor 40 to be reduced, so that the intensity of the sensing signal measured by the sensor 40 is inaccurate.

In some embodiments, referring to fig. 1 to 3, the rotor assembly 30 further includes a first end cover 33 fixedly connected to the motor shaft 31, a housing 34 fixedly connected to the first end cover 33, and a plurality of second magnets 35 fixedly connected to a side of the housing 34 facing the motor shaft 31; the plurality of second magnets 35 surround the winding stator 20. When the winding stator 20 is energized, a rotating magnetic field is generated, and the magnetic field generated by the plurality of second magnets 35 interacts with the rotating magnetic field to form an electromagnetic torque to rotate the motor shaft 31, and at this time, the first end cover 33, the housing 34, and the plurality of second magnets 35 rotate along with the motor shaft 31.

Specifically, the second end of the motor shaft 31 extends through the first end cover 33 to the outside of the first end cover 33; the outer shell 34 is fixedly connected with the edge of the first end cover 33, and can be connected in an interference fit and gluing mode or in a screw connection mode; the plurality of second magnets 35 may be adhered to the housing 34 by glue, and upper surfaces of the plurality of second magnets 35 may be adhered to the first end cap 33, thereby improving connection stability of the second magnets 35.

In some embodiments, referring to fig. 1 to 3, the housing 10 includes a supporting frame 11 and a second end cap 12 fixedly connected to the supporting frame 11;

the supporting frame 11 has a hollow convex portion 111, and the winding stator 20 is sleeved on the convex portion 111;

a first end of the motor shaft 31 passes through the boss 111 and extends to the outside of the support frame 11;

the rotor assembly 30 further comprises at least one bearing 36 located inside the boss 111 and engaging the motor shaft 31; the outer ring of the bearing 36 is fixedly connected with the boss 111, and the inner ring of the bearing 36 is fixedly connected with the motor shaft 31, so that the motor shaft 31 is connected with the support frame 11 on the basis of not influencing the rotation of the motor shaft 31. In addition, in order not to affect the rotation of the rotor assembly 30, the supporting frame 11 has a certain distance with the housing 34 except for the convex portion 111. In addition, the more the bearings 36, the less the vibration when the motor shaft 31 rotates, but the number of the bearings 36 also takes into consideration the size of the space inside the boss 111, so the number of the bearings 36 can be selected according to the actual requirement, and the application is not limited herein.

In some embodiments, referring to fig. 1 to 5, the power device further includes a printed circuit board 60 fixedly connected to the second end cap 12, and the sensor 40 and the control chip 50 are both fixedly connected to the printed circuit board 60 (for example, fixedly connected by welding), wherein the sensor 40 is located on a side of the printed circuit board 60 facing the motor shaft 31, the control chip 50 is located on a side of the printed circuit board 60 away from the motor shaft 31, and the printed circuit board 60, the sensor 40 and the control chip 50 are integrated into a whole to form a driving controller of the flying apparatus.

In addition, referring to fig. 4 and 5, the printed circuit board 60 is provided with a motor outlet terminal 61, and the motor outlet terminal 61 and the battery of the flight device are connected through the motor outlet to supply power to the printed circuit board 60; the printed circuit board 60 is also provided with three-phase winding terminals 62, and the three-phase windings of the winding stator 20 are connected to the three-phase winding terminals 62 to supply power to the winding stator 20. In addition, other electronic components are disposed on the printed circuit board 60, and will not be further described here.

In some embodiments, referring to fig. 1 to 3, the rotor assembly 30 further includes a fixing portion 37 fixedly connected to a first end of the motor shaft 31 (different fixing connection modes may be adopted according to the type of the fixing portion 37, and the fixing connection mode may be a non-detachable connection mode or a detachable connection mode), and the signal emitter 32 is fixed to an end of the fixing portion 37 away from the motor shaft 31. The fixing part 37 can prevent the motor shaft 31 from moving axially when rotating, and the stability of the power device is improved.

Specifically, the fixing portion 37 may be a cap nut, and one end of the motor shaft 31 is provided with a thread engaged with the cap nut; the signal emitter 32 may be glued to the cap nut by glue.

Further, an end of the fixing portion 37 away from the motor shaft 31 is provided with a receiving groove, and the signal emitter 32 is located in the receiving groove. Because a certain distance needs to be kept between the signal emitter 32 and the inductor 40, the signal emitter 32 and the inductor 40 can be kept at a certain distance by the arrangement of the accommodating groove, and the support frame 11 and the second end cover 12 can be connected more tightly.

In some embodiments, referring to fig. 1 to 3, the rotor assembly 30 further includes at least one spacer 38 located between the fixing portion 37 and the supporting frame 11, and the spacer 38 is sleeved on the motor shaft 31. The axial movement of the motor shaft 31 during rotation can be further prevented by the spacer 38, and the vibration of the motor shaft 31 during rotation can be reduced, thereby improving the stability of the power device. In addition, the material of the gasket 38 may be metal or plastic, and the number of the gaskets 38 may also be specifically selected according to actual needs, for example, the number of the gaskets 38 in the present application is two, where the material of one gasket 38 is plastic, and the material of the other gasket 38 is metal (e.g., copper), although the setting of the gasket 38 may also be in other cases, and the present application is not limited herein.

In some embodiments, referring to fig. 1 to 3, the rotor assembly 30 further includes a snap ring 39 located between the spacer 38 and the fixing portion 37, and the snap ring 39 is sleeved on the motor shaft 31. The both ends of the snap ring 39 are in close contact with the spacer 38 and the fixing portion 37, respectively, and the motor shaft 31 is further prevented from moving axially by the snap ring 39 when rotating. In addition, in order to improve the stability of the snap ring 39, a groove is provided on the motor shaft 31, and the snap ring 39 is located in the groove.

Referring to fig. 6 and 7, the present invention further provides a flying apparatus, which includes a horn 100, a power device 200 connected to the horn 100, and a propeller 300 connected to the power device for vertical take-off and landing. When the flying equipment flies flatly, the propeller 300 is locked at a target position through the power device 200, so that the propeller is always in a position with minimum air resistance, and the time or range of the flying equipment can be improved on the basis of not reducing the cargo capacity of the flying equipment.

Furthermore, the motor outlet may be connected to the battery of the flight device through the interior of the horn 100. When the orientation of the horn 100 coincides with the flight direction, the length direction of the two blades of the propeller 300 coincides with the orientation of the horn 100.

In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and parts that are not described in detail in a certain embodiment may refer to the above detailed descriptions of other embodiments, and are not described herein again.

In a specific implementation, each component or structure may be implemented as an independent entity, or may be combined arbitrarily and implemented as one or several entities, and the specific implementation of each component or structure may refer to the foregoing embodiments, which are not described herein again.

The above detailed description of the power device and the flight equipment provided by the embodiment of the invention is provided, and the principle and the implementation mode of the invention are explained by applying a specific example, and the description of the above embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for those skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims

1. A power plant for use in flying apparatus to drive a propeller of said flying apparatus for vertical take-off and landing, comprising: the winding machine comprises a machine shell, a winding stator, a rotor assembly, an inductor and a control chip, wherein the control chip is connected with the inductor and the winding stator;

2. The power device according to claim 1, wherein the control chip is configured to determine whether the stop position is consistent with the target position according to the position signal;

3. The power unit of claim 1, wherein said sensing signal sequentially corresponds to a plurality of sensing positions of said sensor when said signal transmitter rotates one revolution with said motor shaft; the strength of the induction signal received by each induction position is different;

4. The power plant of claim 3, wherein the signal emitter is a first magnet, the induced signal is a magnetic field, and the inductor is a magnetic encoder;

5. The power unit of claim 1, wherein said sensor is positioned below said first end of said motor shaft and opposite said signal emitter.

6. The powerplant of claim 5, wherein the spacing between the inductor and the signal emitter is between 0.5mm and 1.0 mm.

7. The power unit of claim 1, wherein said rotor assembly further comprises a first end cap fixedly attached to said motor shaft, a housing fixedly attached to said first end cap, and a plurality of second magnets fixedly attached to a side of said housing facing said motor shaft; the plurality of second magnets surrounds the winding stator.

8. The power unit of claim 1, wherein said housing includes a support frame and a second end cover fixedly connected to said support frame;

9. The powerplant of claim 8, wherein the rotor assembly further includes a stationary portion fixedly coupled to the first end of the motor shaft, the signal emitter being secured to an end of the stationary portion remote from the motor shaft.

10. The power unit according to claim 9, wherein an end of said fixing portion remote from said motor shaft is provided with a receiving groove, and said signal transmitter is located in said receiving groove.

11. The powerplant of claim 9, wherein the rotor assembly further comprises at least one spacer positioned between the stationary portion and the support frame, the spacer being nested on the motor shaft.

12. The powerplant of claim 11, wherein the rotor assembly further comprises a snap ring positioned between the spacer and the stationary portion, the snap ring being fitted over the motor shaft.

13. A flying apparatus comprising a horn, a power unit as claimed in any one of claims 1 to 12 connected to the horn, and a propeller connected to the power unit for vertical take-off and landing.