WO2017092494A1 - 电机、动力装置及无人飞行器 - Google Patents

电机、动力装置及无人飞行器 Download PDF

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Publication number
WO2017092494A1
WO2017092494A1 PCT/CN2016/100536 CN2016100536W WO2017092494A1 WO 2017092494 A1 WO2017092494 A1 WO 2017092494A1 CN 2016100536 W CN2016100536 W CN 2016100536W WO 2017092494 A1 WO2017092494 A1 WO 2017092494A1
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WIPO (PCT)
Prior art keywords
stator
less
yoke
equal
magnets
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PCT/CN2016/100536
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English (en)
French (fr)
Inventor
周震昊
陶冶
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深圳市大疆创新科技有限公司
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Publication of WO2017092494A1 publication Critical patent/WO2017092494A1/zh

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/14—Stator cores with salient poles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets

Definitions

  • the present invention relates to an electric machine, a power unit having the same, and an unmanned aerial vehicle having the same.
  • brushless motors are widely used in the field of rotorcraft, and the brushless motor as a propeller of a rotorcraft provides flight power for the rotorcraft.
  • the choice of existing motors is mostly based on the user's experience, which is relatively rough, and it is difficult to ensure that the brushless motor has high efficiency and poor dynamic performance at high power operation.
  • An electric machine includes a stator and a rotatable rotor disposed outside the stator.
  • the height of the stator is 7 mm or more and 13 mm or less, and the outer diameter of the stator is 52 mm or more and 72 mm or less.
  • the height of the stator is greater than or equal to 9 mm and less than or equal to 11 mm, and the outer diameter of the stator is 58 mm or more and 62 mm or less.
  • the rotor includes a yoke and a plurality of magnets disposed in the yoke, the yoke being disposed outside the stator; and the plurality of magnets being fixed to an inner wall of the yoke.
  • the thickness or average thickness of each of the magnets along the diameter direction of the yoke is greater than or equal to 0.8 mm and less than or equal to 1.6 mm;
  • the width or average width of each of the magnets in the circumferential direction of the yoke is 5.4 mm or more and 10.4 mm or less.
  • the thickness or average thickness of each of the magnets along the diameter direction of the yoke is greater than or equal to 1 mm and less than or equal to 1.4 mm;
  • the width or average width of each of the magnets in the circumferential direction of the yoke is 7.5 mm or more and 8.3 mm or less.
  • stator includes a core and a coil disposed on the core.
  • the iron core includes a sleeve portion and a support portion disposed on the sleeve portion, and the coil is wound around the support portion.
  • the support portion has a width or an average width of 2.8 mm or more and 4.8 mm or less.
  • the width or average width of the support portion is greater than or equal to 3.5 mm and less than or equal to 4.1 mm.
  • the coil is formed by winding a wire having a diameter of 0.85 mm after removing the patent leather; or the coil is formed by winding a wire having a diameter of 0.9 mm after removing the patent leather; or the coil is removed by two strands of paint A wire having a rear diameter of 0.6 mm is formed around 14 turns.
  • An electric machine includes a stator and a rotatable rotor disposed outside the stator.
  • the height of the stator is greater than or equal to 7 mm and less than or equal to 13 mm, and the outer diameter of the stator is greater than or equal to 52 mm and less than or equal to 72 mm;
  • the stator includes a core and a coil disposed on the core; the core includes a sleeve portion and a support portion disposed on the sleeve portion, the coil is wound around the support portion; the width of the support portion or The average width is greater than or equal to 2.8 mm and less than or equal to 4.8 mm; the number of turns of the coil is 8 to 20;
  • the rotor includes a yoke and a plurality of magnets disposed in the yoke, the yoke cover is disposed outside the stator; a plurality of the magnets are fixed on an inner wall of the yoke; each of the magnets is along a diameter direction of the yoke
  • the thickness or the average thickness is 0.8 mm or more and 1.6 mm or less; the width or average width of each of the magnets in the circumferential direction of the yoke is 5.4 mm or more and 10.4 mm or less.
  • a power unit includes a propeller and a motor as described above, the propeller being coupled to the motor, the motor being capable of driving the propeller to rotate.
  • the torque coefficient of the propeller is greater than or equal to 5.8*10 -5 [Nm ⁇ m / (rev / min) 2 ] and less than or equal to 6.2 * 10 -5 [Nm ⁇ m / (rev / min) 2 ].
  • An unmanned aerial vehicle includes a fuselage and a power unit as described above, the power unit being disposed on the fuselage to provide flight power to the unmanned aerial vehicle.
  • the motor By using the motor, the power device and the unmanned aerial vehicle of the invention, by optimizing the size of the stator, when the motor is applied to the propeller, the motor can have a high operating efficiency while having a high operating power, and the motor has a good performance. Dynamic performance.
  • FIG. 1 is a perspective view of an unmanned aerial vehicle provided by a preferred embodiment of the present invention.
  • Figure 2 is a perspective longitudinal cross-sectional view of the motor of Figure 1.
  • Fig. 3 is an exploded perspective view of the motor of Fig. 2.
  • FIG. 4 is another perspective longitudinal cross-sectional view of the motor of FIG. 3.
  • Figure 5 is a cross-sectional view of the motor of Figure 4.
  • a component when referred to as being “fixed” to another component, it can be directly on the other component or the component can be present.
  • a component When a component is considered to "connect” another component, it can be directly connected to another component or possibly a central component.
  • a component When a component is considered to be “set to” another component, it can be placed directly on another component or possibly with a centered component.
  • the terms “vertical,” “horizontal,” “left,” “right,” and the like, as used herein, are for illustrative purposes only.
  • an unmanned aerial vehicle 500 is used for carrying a load such as a camera, a camera, or the like.
  • the UAV 500 includes a body 510 and a power unit (not shown) disposed on the body 510.
  • the power unit includes a motor 100 and a propeller 200, and the propeller 200 is disposed on the motor 100.
  • the motor 100 is used to drive the propeller 200 to rotate, thereby driving the UAV 500 to fly.
  • the number of the motors 100 is four, and the four motors 100 are respectively disposed on the body 510; it can be understood that in other embodiments, the number of the motors 100 can be changed according to actual needs.
  • the motor 100 is a brushless motor.
  • the motor 100 includes a base 10, a stator 30 fixedly coupled to the base 10, a rotor 50 rotatably coupled to the base 10, and a spindle assembly 90 disposed on the rotor 50.
  • the base 10 includes a base 11 and a fixing portion 12 disposed on the base 11.
  • the base 11 has a substantially disk shape, and the fixed portion 12 has a substantially cylindrical shape.
  • the central axis of the base 11 substantially coincides with the central axis of the fixed portion 12.
  • the fixing portion 12 protrudes from a surface of the base 11 facing the stator 30.
  • the fixing portion 12 is for fixing the stator 30.
  • the fixing portion 12 defines a receiving hole 121 extending through the fixing portion 12 , and the receiving hole 121 extends through the base 11 .
  • the receiving hole 121 is for receiving a part of the rotating shaft assembly 90.
  • the stator 30 is disposed on the fixing portion 12 of the base 10 and has a substantially cylindrical shape.
  • the stator 30 includes a core 32 and a coil (not shown) wound around the core 32.
  • the iron core 32 includes a sleeve portion 321 and a support portion 323 formed on an outer circumferential surface of the sleeve portion 321 .
  • the sleeve portion 321 is substantially cylindrical and is sleeved on the fixing portion 12.
  • the height h of the sleeve portion 321 along the axial direction thereof is 7 mm or more and 13 mm or less.
  • the height h of the sleeve portion 321 may be any value between 7 mm and 13 mm.
  • the height h of the sleeve portion 321 may be 7 mm, 7.5 mm, 8 mm, 8.5 mm, 9 mm, 9.5 mm. , 10 mm, 10.5 mm, 11 mm, 11.5 mm, 12 mm, 12.5 mm, 13 mm, or any value within the range of values defined by any two of the above values.
  • the height h of the sleeve portion 321 along its axial direction is greater than or equal to 9 mm and less than or equal to 11 mm.
  • the number of the support portions 323 is nine, and the nine support portions 323 are disposed on the outer peripheral wall of the sleeve portion 321 and are arranged along the circumferential direction of the sleeve portion 321 . It can be understood that the number of the supporting portions 323 is not limited to the embodiment, and in other embodiments, the number of the supporting portions 323 may be changed according to actual needs.
  • the support portion 323 has a substantially plate shape, and one side thereof is fixed to the outer circumference of the sleeve portion 321 , and the other side extends in a direction away from the sleeve portion 321 in the radial direction of the sleeve portion 321 .
  • the width of the support portion 323 gradually increases from a side close to the sleeve portion 321 to a side away from the sleeve portion 321 .
  • the support portion 323 has an average width t of 2.8 mm or more and 4.8 mm or less.
  • the average width t of the support portion 323 may be any value between 2.8 mm and 4.8 mm, for example, the average width t of the support portion 323 is 2.8 mm, 2.9 mm, 3 mm, 3.1 mm, 3.2 mm, 3.3 mm, 3.4 mm, 3.5 mm, 3.6 mm, 3.7 mm, 3.8 mm, 3.9 mm, 4.0 mm, 4.1 mm, 4.2 mm, 4.3 mm, 4.4 m Meters, 4.5 mm, 4.6 mm, 4.7 mm, 4.8 mm, or any value within the range of values defined by any two of the above values.
  • the support portion 323 has an average width t of 3.5 mm or more and 4.1 mm or less.
  • the width of the support portion 323 may be equal from a side close to the sleeve portion 321 to a side away from the sleeve portion 321 .
  • the support portion 323 is for supporting the coil.
  • the coil may be plural, and each of the coils is wound around one of the support portions 323.
  • the number of turns of the coil may be 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, etc., and the diameter of the wire may be designed according to requirements.
  • the diameter of the wire for winding the wire forming the coil is 0.85 mm, and the number of turns is 14 ⁇ .
  • the coil can be formed by winding a corresponding number of wires of other specifications, such as a diameter of 0.9 mm after removing the paint for winding the wire forming the coil, and the number of turns is set. It is 12 turns; the coil can be formed by winding a plurality of strands, for example, the coil can be formed by winding two strands of wire having a diameter of 0.6 mm after removing the patent leather.
  • a stop portion 325 is formed at each end of the support portion 323 away from the sleeve portion 321 .
  • Each of the stopping portions 325 has a size larger than a corresponding size of the end of the supporting portion 323 to prevent the corresponding coil from being detached from the corresponding supporting portion 323.
  • the surface of the stop portion 325 facing away from the corresponding support portion 323 is a partial cylindrical surface.
  • the outer diameter D of the stator 30 is greater than or equal to 52 mm and equal to or less than 72 mm.
  • the outer diameter D of the stator 30 may be any value between 52 mm and 72 mm, such as 52 mm, 54 mm, 56 mm, 58 mm, 60 mm, 62 mm, 64 mm, 66 mm, 68 mm, 70 mm. Any value within the range of values defined by 72 mm, or any of the above two values.
  • the outer diameter D of the stator 30 is greater than or equal to 58 mm and less than or equal to 62 mm.
  • the height H of the stator 30 along its axial direction is greater than or equal to 7 mm and equal to or less than 13 mm.
  • the height H of the stator 30 along its axial direction may be any value between 7 mm and 13 mm.
  • the height H of the stator 30 along its axial direction may be 7 mm, 7.5 mm, 8 mm, 8.5 mm, 9 Millimeter, 9.5 mm, 10 mm, 10.5 mm, 11 mm, 11.5 mm, 12 mm, 12.5 mm, 13 mm, or any value within the range of values defined by any two of the above values.
  • the height H of the stator 30 along its axial direction is greater than or equal to 9 mm and less than or equal to 11 mm.
  • the height H of the stator 30 along its axial direction is equal to the height h of the sleeve portion 321 along its axial direction; it can be understood that in other embodiments, the height H of the stator 30 along its axial direction may be greater than Or small The height h of the sleeve portion 321 along its axial direction.
  • the rotor 50 is disposed on an outer circumference of the stator 30 and includes a yoke 52 and a magnet 54 disposed on the yoke 52.
  • the yoke 52 has a cylindrical shape having a bottom wall which is rotatable relative to the core 32.
  • the yoke 52 includes a peripheral wall 521 and a bottom wall 523 disposed at one end of the peripheral wall 521 .
  • the bottom wall 523 is disposed at an end of the peripheral wall 521 away from the base 11 .
  • the peripheral wall 521 is substantially cylindrical and is used to receive the magnet 54.
  • the bottom wall 523 defines a through hole 5231 for receiving a part of the shaft assembly 90.
  • the magnets 54 are substantially in the shape of an arc, and the number thereof is eleven. Eleven of the magnets 54 are fixed to the inner side of the peripheral wall 521 of the yoke 52, and are arranged along the circumferential direction of the peripheral wall 521. . It can be understood that in other embodiments, the magnet 54 may have other shapes, such as a giant sheet shape; the number of the magnets 54 is not limited to the embodiment, and the number of the magnets 54 may be plural, such as ten or twelve. One, sixteen, etc.
  • the thickness T or the average thickness T of the magnet 54 in the diameter direction of the yoke 52 is 0.8 mm or more and 1.6 mm or less.
  • the thickness T or the average thickness of the magnet 54 may be any value between 0.8 mm and 1.6 mm, for example, the thickness T or the average thickness T of the magnet 54 may be 0.8 mm, 0.9 mm, 1 mm, 1.1 mm, 1.2 mm. , 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, or any value within the range of values defined by any two of the above values.
  • the thickness T or the average thickness T of the magnet 54 in the diameter direction of the yoke 52 is 1 mm or more and 1.4 mm or less.
  • the width b or the average width b of the magnet 54 in the circumferential direction of the yoke 52 is 5.4 mm or more and 10.4 mm or less.
  • the width b or the average width b of the magnet 54 may be any value between 5.4 mm and 10.4 mm, for example, the width b or the average width b of the magnet 54 may be 5.4 mm, 5.5 mm, 5.7 mm, 5.8 mm, 5.9.
  • the shaft assembly 90 includes a rotating shaft 92 and a bearing 94 disposed on the rotating shaft 92.
  • the rotating shaft 92 has a substantially cylindrical rod shape, and one end of the rotating shaft 92 is fixedly inserted into the through hole 5231 of the bottom wall 523, and the other end is rotatably inserted into the fixing portion 12 of the base 10.
  • the motor 100 When the motor 100 is energized, the rotor 50 drives the shaft assembly 90 to rotate relative to the stator 30 and the base 10.
  • the number of the bearings 94 is two, and the two bearings 94 are disposed on the rotating shaft 92 at a distance from each other, and are received in the receiving holes 121 of the fixing portion 12.
  • the coil is wound around the iron core 32, and the iron core 32 is fixedly disposed on the fixing portion 12.
  • the magnet 54 is placed on the yoke 52, and one end of the rotating shaft 92 of the rotating shaft assembly 90 is inserted into the bottom wall 523 of the rotor 50.
  • the other end of the rotating shaft 92 of the rotating shaft assembly 90 and the bearing 94 are housed in the fixing portion 12, and the cover for rotating the yoke 52 is provided on the outer circumference of the stator 30.
  • Table 1 shows the torque of the motor 100 using the motor 100 provided by the present invention at different stator heights, different stator outer diameters, different magnet widths, and different support widths. Motor efficiency and motor speed changes.
  • the motor 100 provided by the present invention is applied to a propeller 200 of the unmanned aerial vehicle 500, and the propeller 200 is fixedly coupled to one end of a rotating shaft 92 of the motor 100.
  • the rotor 50 of the motor 100 drives the propeller 200 to rotate through the rotating shaft 92, thereby driving the UAV 500 to fly.
  • the torque coefficient of the propeller 200 is greater than or equal to 5.8*10 -5 [Nm ⁇ m / (rev / min) 2 ] and less than or equal to 6.2 * 10 -5 [Nm ⁇ m / (rev / min) 2 ].
  • the torque coefficient of the propeller 200 is:
  • Torque factor torque / (speed 2 )
  • the motor By using the motor, the power device and the unmanned aerial vehicle of the invention, by optimizing the size of the stator, when the motor is applied to the propeller, the motor can have a high operating efficiency while having a high operating power, and the motor has a good performance. Dynamic performance.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

一种电机（100）、具有该电机的动力装置及具有该动力装置的无人飞行器（500）。电机包括定子（30）以及能够转动的设置于定子外的转子（50），定子的高度大于等于7毫米且小于等于13毫米，定子的外直径大于等于52毫米且小于等于72毫米。通过优化定子的尺寸，使电机应用于动力装置的螺旋桨时，能够在具备较大运转功率的同时，具有较高效率。

Description

电机、动力装置及无人飞行器 技术领域
本发明涉及一种电机、具有该电机的动力装置及具有该动力装置的无人飞行器。
背景技术
目前，无刷电机广泛的应用于旋翼飞行器领域，无刷电机作为旋翼飞行器的螺旋桨的驱动件为该旋翼飞行器提供飞行动力。然而，现有的电机的选择大都是依据用户的经验，比较粗略，很难保证该无刷电机在大功率运转时具有较高的效率，动态性能较差。
发明内容
有鉴于此，有必要提供一种动态性能较好的电机、动力装置及无人飞行器。
一种电机，其包括定子以及能够转动的设置于该定子外的转子。该定子的高度大于等于7毫米且小于等于13毫米，该定子的外直径大于等于52毫米且小于等于72毫米。
进一步的，该定子的高度大于等于9毫米且小于等于11毫米，该定子的外直径大于等于58毫米且小于等于62毫米。
进一步的，该转子包括磁轭及设置于该磁轭内的多个磁体，该磁轭罩设在该定子外；多个该磁体固定于该磁轭的内壁上。
进一步的，每个该磁体沿该磁轭直径方向的厚度或者平均厚度大于等于0.8毫米且小于等于1.6毫米；
每个该磁体沿该磁轭的周向的宽度或者平均宽度大于等于5.4毫米且小于等于10.4毫米。
进一步的，每个该磁体沿该磁轭直径方向的厚度或者平均厚度大于等于1毫米且小于等于1.4毫米；
每个该磁体沿该磁轭的周向的宽度或者平均宽度大于等于7.5毫米且小于等于8.3毫米。
进一步的，该定子包括铁芯及设置于该铁芯上的线圈。
进一步的，该铁芯包括套设部及设置于该套设部上的支撑部，该线圈绕设于该支撑部上。
进一步的，该支撑部的宽度或者平均宽度大于等于2.8毫米且小于等于4.8毫米。
进一步的，该支撑部的宽度或者平均宽度大于等于3.5毫米且小于等于4.1毫米。
进一步的，该线圈由除去漆皮后直径为0.85毫米的导线绕设14匝形成；或者，该线圈由除去漆皮后直径为0.9毫米的导线绕设12匝形成；或者，该线圈由两股除去漆皮后直径为0.6毫米的导线绕设14匝形成。
一种电机，其包括定子以及能够转动的设置于该定子外的转子。该定子的高度大于等于7毫米且小于等于13毫米，该定子的外直径大于等于52毫米且小于等于72毫米；
该定子包括铁芯及设置于该铁芯上的线圈；该铁芯包括套设部及设置于该套设部上的支撑部，该线圈绕设于该支撑部上；该支撑部的宽度或者平均宽度大于等于2.8毫米且小于等于4.8毫米；该线圈的匝数为8～20；
该转子包括磁轭及设置于该磁轭内的多个磁体，该磁轭罩设在该定子外；多个该磁体固定于该磁轭的内壁上；每个该磁体沿该磁轭直径方向的厚度或者平均厚度大于等于0.8毫米且小于等于1.6毫米；每个该磁体沿该磁轭的周向的宽度或者平均宽度大于等于5.4毫米且小于等于10.4毫米。
一种动力装置，其包括螺旋桨及如上所述的电机，该螺旋桨与该电机相连接，该电机能够驱动该螺旋桨转动。
进一步的，该螺旋桨的转矩系数大于等于5.8*10-5[牛·米/(转/分)2]且小于等于6.2*10-5[牛·米/(转/分)2]。
一种无人飞行器，其包括机身及如上所述的动力装置，该动力装置设置于该机身上，其为该无人飞行器提供飞行动力。
采用本发明的电机、动力装置及无人飞行器，通过优化该定子的尺寸，使该电机应用于螺旋桨时，能够在具备较大运转功率的同时，具有较高的效率，该电机具有较好的动态性能。
附图说明
图1是本发明较佳实施方式提供的无人飞行器的立体示意图。
图2是图1中的电机的立体纵剖示意图。
图3图2中的电机的分解示意图。
图4是图3中的电机的另一立体纵剖示意图。
图5是图4中的电机的横剖示意图。
主要元件符号说明
电机 100
基座 10
座体 11
固定部 12
收容孔 121
定子 30
铁芯 32
套设部 321
支撑部 323
止挡部 325
转子 50
磁轭 52
周壁 521
底壁 523
通孔 5231
磁体 54
转轴组件 90
转轴 92
螺旋桨 200
无人飞行器 500
机身 510
如下具体实施方式将结合上述附图进一步说明本发明。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
需要说明的是，当组件被称为“固定于”另一个组件，它可以直接在另一个组件上或者也可以存在居中的组件。当一个组件被认为是“连接”另一个组件，它可以是直接连接到另一个组件或者可能同时存在居中组件。当一个组件被认为是“设置于”另一个组件，它可以是直接设置在另一个组件上或者可能同时存在居中组件。本文所使用的术语“垂直的”、“水平的”、“左”、“右”以及类似的表述只是为了说明的目的。
除非另有定义，本文所使用的所有的技术和科学术语与属于本发明的技术领域的技术人员通常理解的含义相同。本文中在本发明的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本发明。本文所使用的术语“及/或”包括一个或多个相关的所列项目的任意的和所有的组合。
下面结合附图，对本发明的一些实施方式作详细说明。在不冲突的情况下，下述的实施例及实施例中的特征可以相互组合。
请参阅图1，本发明较佳实施方式提供的无人飞行器500，其用于搭载负载，如相机、摄影机等。该无人飞行器500包括机身510及设置于该机身510上的动力装置(图未示)。该动力装置包括电机100及螺旋桨200，该螺旋桨200设置于该电机100上。该电机100用于驱动该螺旋桨200转动，从而带动该无人飞行器500飞行。本实施方式中，该电机100的数量为四个，四个该电机100分别设置在该机身510上；可以理解，在其他实施方式中，该电机100的数量可以根据实际需要改变。
请参阅图2至图5，本实施方式中，该电机100为无刷电机。该电机100包括基座10、固定连接于该基座10的定子30、可转动的连接于该基座10的转子50及设置于该转子50上的转轴组件90。
该基座10包括座体11及设置于该座体11上的固定部12。该座体11基本呈圆盘状，该固定部12基本呈圆筒状，该座体11的中心轴与该固定部12的中心轴大致重合。该固定部12凸出于该座体11朝向该定子30的一表面。该固定部12用于固定该定子30。该固定部12开设有贯穿该固定部12的收容孔121，该收容孔121贯穿该座体11。该收容孔121用于收容部分该转轴组件90。
该定子30设置于该基座10的固定部12上，其基本呈圆柱状。该定子30包括铁芯32以及绕在该铁芯32上的线圈(图未示)。该铁芯32包括套设部321及形成于该套设部321的外周面上的支撑部323。该套设部321基本呈圆筒状，其套设在该固定部12上。本实施方式中，该套设部321沿其轴向的高度h大于等于7毫米且小于等于13毫米。该套设部321的高度h可以为7毫米至13毫米之间的任意值，例如，该套设部321的高度h可以为7毫米、7.5毫米、8毫米、8.5毫米、9毫米、9.5毫米、10毫米、10.5毫米、11毫米、11.5毫米、12毫米、12.5毫米、13毫米，或者为上述任意两个数值所界定的数值范围内的任意值。优选地，该套设部321沿其轴向的高度h大于等于9毫米且小于等于11毫米。
本实施方式中，该支撑部323的数量为九个，九个该支撑部323设置于该套设部321的外周壁上，并沿该套设部321的周向间隔排列。可以理解，该支撑部323的数量并不限于本实施方式，在其他实施方式中，该支撑部323的数量可以根据实际需要改变。该支撑部323大致呈板状，其一侧固定于该套设部321的外周，另一侧沿该套设部321的径向朝远离该套设部321的方向延伸。该支撑部323的宽度从靠近该套设部321的一侧到远离该套设部321的一侧逐渐增大。本实施方式中，该支撑部323的平均宽度t大于等于2.8毫米且小于等于4.8毫米。该支撑部323的平均宽度t可以为2.8毫米至4.8毫米之间的任意值，例如，该支撑部323的平均宽度t为2.8毫米、2.9毫米、3毫米、3.1毫米、3.2毫米、3.3毫米、3.4毫米、3.5毫米、3.6毫米、3.7毫米、3.8毫米、3.9毫米、4.0毫米、4.1毫米、4.2毫米、4.3毫米、4.4毫 米、4.5毫米、4.6毫米、4.7毫米、4.8毫米，或者为上述任意两个数值所界定的数值范围内的任意值。优选地，该支撑部323的平均宽度t大于等于3.5毫米且小于等于4.1毫米。
可以理解，在其他实施方式中，该支撑部323的宽度可以从靠近该套设部321的一侧到远离该套设部321的一侧均相等。
该支撑部323用于支撑该线圈。该线圈可以为多个，每个该线圈绕设在一个该支撑部323上。该线圈的匝数可以为8、9、10、11、12、13、14、15、16、17、18、19、20等，导线的直径可以根据需求来设计。本实施方式中，用于绕设形成该线圈的导线的除去漆皮后直径为0.85毫米，其绕设匝数为14匝。可以理解，在其他实施方式中，该线圈可以由其他规格的导线绕设对应的匝数而形成，如用于绕设形成该线圈的导线的除去漆皮后直径为0.9毫米，其绕设匝数为12匝；该线圈可以为多股线绕设形成，如该线圈可以利用两股除去漆皮后直径为0.6毫米的导线绕设14匝形成。
每个该支撑部323远离该套设部321的末端形成有一个止挡部325。每个该止挡部325的尺寸大于对应的该支撑部323末端的尺寸，以防止对应的该线圈脱离对应的该支撑部323。该止挡部325背离对应的该支撑部323的表面为部分圆柱面。
该定子30的外直径D大于等于52毫米且小于等于72毫米。该定子30的外直径D可以为52毫米至72毫米之间的任意值，例如52毫米、54毫米、56毫米、58毫米、60毫米、62毫米、64毫米、66毫米、68毫米、70毫米、72毫米，或者上述任意两个数值所界定的数值范围内的任意值。优选地，该定子30的外直径D大于等于58毫米且小于等于62毫米。
该定子30沿其轴向的高度H大于等于7毫米且小于等于13毫米。该定子30沿其轴向的高度H可以为7毫米至13毫米之间的任意值，例如，该定子30沿其轴向的高度H可以为7毫米、7.5毫米、8毫米、8.5毫米、9毫米、9.5毫米、10毫米、10.5毫米、11毫米、11.5毫米、12毫米、12.5毫米、13毫米，或者为上述任意两个数值所界定的数值范围内的任意值。优选地，该定子30沿其轴向的高度H大于等于9毫米且小于等于11毫米。本实施方式中，该定子30沿其轴向的高度H等于该套设部321沿其轴向的高度h；可以理解，在其他实施方式中，该定子30沿其轴向的高度H可以大于或者小 于该套设部321沿其轴向的高度h。
该转子50罩设在该定子30的外周，其包括磁轭52及设置于该磁轭52上的磁体54。该磁轭52大致呈有底壁的圆柱筒状，其能够相对于该铁芯32转动。该磁轭52包括周壁521及设置在该周壁521的一端的底壁523，该底壁523盖设于该周壁521远离该座体11的一端。该周壁521基本呈圆筒状，其用于收容该磁体54。该底壁523开设有通孔5231，该通孔5231用于收容部分该转轴组件90。
本实施方式中，该磁体54基本呈弧形片状，其数量为十一个，十一个该磁体54固定在该磁轭52的周壁521的内侧，并沿该周壁521的周向间隔设置。可以理解，在其他实施方式中，该磁体54可以为其他形状，如巨型片状；该磁体54的数量并不限于本实施方式，该磁体54的数量可以为多个，如十个、十二个、十六个等。
该磁体54沿该磁轭52的直径方向的厚度T或平均厚度T大于等于0.8毫米且小于等于1.6毫米。该磁体54的厚度T或平均厚度可以为0.8毫米至1.6毫米之间的任意值，例如，该磁体54的厚度T或平均厚度T可以为0.8毫米、0.9毫米、1毫米、1.1毫米、1.2毫米、1.3毫米、1.4毫米、1.5毫米、1.6毫米，或者为上述任意两个数值所界定的数值范围内的任意值。优选地，该磁体54沿该磁轭52的直径方向的厚度T或平均厚度T大于等于1毫米且小于等于1.4毫米。
该磁体54沿该磁轭52的圆周方向的宽度b或平均宽度b大于等于5.4毫米且小于等于10.4毫米。该磁体54的宽度b或平均宽度b可以为5.4毫米至10.4毫米之间的任意值，例如，该磁体54的宽度b或平均宽度b可以为5.4毫米、5.5毫米、5.7毫米、5.8毫米、5.9毫米、6毫米、6.1毫米、6.2毫米、6.3毫米、6.4毫米、6.5毫米、6.6毫米、6.7毫米、6.8毫米、6.9毫米、7毫米、7.1毫米、7.2毫米、7.3毫米、7.4毫米、7.5毫米、7.6毫米、7.7毫米、7.8毫米、7.9毫米、8.0毫米、8.1毫米、8.2毫米、8.3毫米、8.4毫米、8.5毫米、8.6毫米、8.7毫米、8.8毫米、8.9毫米、9毫米、9.1毫米、9.2毫米、9.3毫米、9.4毫米、9.5毫米、9.6毫米、9.7毫米、9.8毫米、9.9毫米、10毫米、10.1毫米、10.2毫米、10.3毫米、10.4毫米，或者为上述任意两个数值所界定的数值范围内的任意值。优选地，该磁体54沿该磁轭52 的圆周方向的宽度b或平均宽度b大于等于7.5毫米且小于等于8.3毫米。
该转轴组件90包括转轴92以及设置于该转轴92上的轴承94。该转轴92大致呈圆柱杆状，其一端固定地插设于该底壁523的通孔5231，另一端可转动地穿设于该基座10的固定部12中。当该电机100通电运转时，该转子50带动该转轴组件90相对该定子30及该基座10转动。本实施方式中，该轴承94的数量为两个，两个该轴承94彼此间隔的设置于该转轴92上，并收容于该固定部12的收容孔121中。
组装时，首先，将该线圈绕设于该铁芯32上，将该铁芯32固定地设置于该固定部12上。之后，将该磁体54设置于该磁轭52上，再将该转轴组件90的转轴92的一端插设于该转子50的底壁523上。最后，将该转轴组件90的转轴92的另一端及该轴承94收容于该固定部12内，使该磁轭52转动的罩设于该定子30的外周。
请参阅表1，表1示出了使用本发明提供的该电机100在不同的定子高度、不同的定子外直径、不同的磁体宽度以及不同的支撑部宽度的情况下，该电机100的扭矩、电机效率及电机转速的变化情况。
Figure PCTCN2016100536-appb-000001
Figure PCTCN2016100536-appb-000002
Figure PCTCN2016100536-appb-000003
Figure PCTCN2016100536-appb-000004
Figure PCTCN2016100536-appb-000005
Figure PCTCN2016100536-appb-000006
Figure PCTCN2016100536-appb-000007
Figure PCTCN2016100536-appb-000008
Figure PCTCN2016100536-appb-000009
Figure PCTCN2016100536-appb-000010
Figure PCTCN2016100536-appb-000011
Figure PCTCN2016100536-appb-000012
Figure PCTCN2016100536-appb-000013
Figure PCTCN2016100536-appb-000014
Figure PCTCN2016100536-appb-000015
Figure PCTCN2016100536-appb-000016
Figure PCTCN2016100536-appb-000017
Figure PCTCN2016100536-appb-000018
Figure PCTCN2016100536-appb-000019
自表1中可以看出，本发明提供的电机100的运行效率较高，平均效率达到了90％以上，最高效率达到91.58％。
本发明提供的电机100，其应用于该无人飞行器500的螺旋桨200上，该螺旋桨200固定地连接于该电机100的转轴92一端。当该电机100通电运转时，该电机100的转子50通过该转轴92带动该螺旋桨200转动，从而驱动该无人飞行器500飞行。优选地，该螺旋桨200的扭矩系数大于等于5.8*10-5[牛·米/(转/分)2]且小于等于6.2*10-5[牛·米/(转/分)2]。其中，该螺旋桨200的扭矩系数为：
扭矩系数＝扭矩/(转速2)
采用本发明的电机、动力装置及无人飞行器，通过优化该定子的尺寸，使该电机应用于螺旋桨时，能够在具备较大运转功率的同时，具有较高的效率，该电机具有较好的动态性能。
以上实施方式仅用以说明本发明的技术方案而非限制，尽管参照以上较佳实施方式对本发明进行了详细说明，本领域的普通技术人员应当理解，可以对本发明的技术方案进行修改或等同替换都不应脱离本发明技术方案的精神和范围。

Claims (11)

  1. 一种电机，其包括定子以及能够转动的设置于该定子外的转子，其特征在于：该定子的高度大于等于7毫米且小于等于13毫米，该定子的外直径大于等于52毫米且小于等于72毫米。
  2. 如权利要求1所述的电机，其特征在于：该定子的高度大于等于9毫米且小于等于11毫米，该定子的外直径大于等于58毫米且小于等于62毫米。
  3. 如权利要求1所述的电机，其特征在于：该转子包括磁轭及设置于该磁轭内的多个磁体，该磁轭罩设在该定子外；多个该磁体固定于该磁轭的内壁上；
    每个该磁体沿该磁轭直径方向的厚度或者平均厚度大于等于0.8毫米且小于等于1.6毫米；
    每个该磁体沿该磁轭的周向的宽度或者平均宽度大于等于5.4毫米且小于等于10.4毫米。
  4. 如权利要求3所述的电机，其特征在于：每个该磁体沿该磁轭直径方向的厚度或者平均厚度大于等于1毫米且小于等于1.4毫米；
    每个该磁体沿该磁轭的周向的宽度或者平均宽度大于等于7.5毫米且小于等于8.3毫米。
  5. 如权利要求1所述的电机，其特征在于：该定子包括铁芯及设置于该铁芯上的线圈；
    该铁芯包括套设部及设置于该套设部上的支撑部，该线圈绕设于该支撑部上；
    该支撑部的宽度或者平均宽度大于等于2.8毫米且小于等于4.8毫米。
  6. 如权利要求5所述的电机，其特征在于：该支撑部的宽度或者平均宽度大于等于3.5毫米且小于等于4.1毫米。
  7. 如权利要求5所述的电机，其特征在于：该线圈由除去漆皮后直径为0.85毫米的导线绕设14匝形成；
    或者，该线圈由除去漆皮后直径为0.9毫米的导线绕设12匝形成；
    或者，该线圈由两股除去漆皮后直径为0.6毫米的导线绕设14匝形成。
  8. 一种电机，其包括定子以及能够转动的设置于该定子外的转子，其特征在于：该定子的高度大于等于7毫米且小于等于13毫米，该定子的外直径大于等于52毫米且小于等于72毫米；
    该定子包括铁芯及设置于该铁芯上的线圈；该铁芯包括套设部及设置于该套设部上的支撑部，该线圈绕设于该支撑部上；该支撑部的宽度或者平均宽度大于等于2.8毫米且小于等于4.8毫米；该线圈的匝数为8～20；
    该转子包括磁轭及设置于该磁轭内的多个磁体，该磁轭罩设在该定子外；多个该磁体固定于该磁轭的内壁上；每个该磁体沿该磁轭直径方向的厚度或者平均厚度大于等于0.8毫米且小于等于1.6毫米；每个该磁体沿该磁轭的周向的宽度或者平均宽度大于等于5.4毫米且小于等于10.4毫米。
  9. 一种动力装置，其包括螺旋桨及如权利要求1-7中任一项所述的电机，该螺旋桨与该电机相连接，该电机能够驱动该螺旋桨转动。
  10. 如权利要求9所述的动力装置，其特征在于：该螺旋桨的转矩系数大于等于5.8*10-5[牛·米/(转/分)2]且小于等于6.2*10-5[牛·米/(转/分)2]。
  11. 一种无人飞行器，其包括机身及如权利要求9或10所述的动力装置，该动力装置设置于该机身上，其为该无人飞行器提供飞行动力。
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