WO2017107723A1 - 无刷直流电动机 - Google Patents

无刷直流电动机 Download PDF

Info

Publication number
WO2017107723A1
WO2017107723A1 PCT/CN2016/106634 CN2016106634W WO2017107723A1 WO 2017107723 A1 WO2017107723 A1 WO 2017107723A1 CN 2016106634 W CN2016106634 W CN 2016106634W WO 2017107723 A1 WO2017107723 A1 WO 2017107723A1
Authority
WO
WIPO (PCT)
Prior art keywords
brushless
heat dissipation
ferrule
motor
stator
Prior art date
Application number
PCT/CN2016/106634
Other languages
English (en)
French (fr)
Inventor
杜昊
Original Assignee
广州亿航智能技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 广州亿航智能技术有限公司 filed Critical 广州亿航智能技术有限公司
Publication of WO2017107723A1 publication Critical patent/WO2017107723A1/zh

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12Stationary parts of the magnetic circuit
    • H02K1/20Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K29/00Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K5/00Casings; Enclosures; Supports
    • H02K5/04Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/20Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium

Definitions

  • the present invention relates to the field of electric motors, and in particular, to a brushless DC motor.
  • An electric motor is an energy conversion device that converts electrical energy into kinetic energy through electromagnetic phenomena.
  • the brushless DC motor consists of a motor body and a driver, and is a typical electromechanical integration product.
  • Brushless DC motors contain a lot of electronic components inside, which generate a lot of heat in the working power components. If the heat is not obtained and the heat is generated, it is easy to cause damage.
  • Brushless DC motors of more than 15Kw have appeared in the prior art. Such motors are bulky and heavy, and require a liquid cooling system to solve the heat dissipation problem, and the structure is complicated. These reasons have led to their main application in industry and are not suitable for the field of manned aircraft.
  • the present invention overcomes the deficiencies of the prior art and provides a brushless DC motor which has good heat dissipation performance and light weight.
  • a brushless DC motor includes a stator, a rotor rotatable relative to the stator, and a motor shaft fixedly coupled to the rotor, the stator including a stator core and a field winding, the field winding being disposed on the stator core
  • the rotor includes a rotor yoke and at least two magnets. The magnets are spaced apart from the rotor yoke.
  • the field windings are disposed opposite to the magnets and have an annular first heat dissipation channel.
  • the stator core is disposed on the stator core. There are a plurality of second heat dissipation channels, and the second heat dissipation channels are arranged along the axial direction of the stator core.
  • the rotor is disposed outside the stator, the stator core is provided with a shaft hole, the motor shaft passes through the shaft hole, and the motor shaft and the stator core are installed with a first A bearing, the magnets are spaced apart on the inner side of the rotor yoke.
  • the brushless DC motor further includes an upper end cover and a lower end cover, the upper end cover is sleeved outside the motor shaft and fixedly connected with the rotor yoke, and the upper end cover is provided with the first heat dissipation channel And the air outlet of the second heat dissipation channel, the lower end cover is sleeved outside the stator core and fixedly connected to the rotor yoke, and the lower end cover is provided with an air inlet connected to the first heat dissipation channel.
  • the air outlet is a plurality of
  • the upper end cover includes a first ferrule and a second ferrule, and the first ferrule and the second ferrule are connected by a plurality of ribs, and the plurality of ribs
  • the plate spacing is arranged to form a plurality of said air outlets.
  • the first ferrule is provided with a sleeve, and the sleeve is closely matched with the motor shaft.
  • the ribs are radially distributed around the sleeve.
  • a second bearing is mounted between the lower end cover and the stator core.
  • the air inlet is a plurality of
  • the lower end cover includes a third ferrule and a fourth ferrule
  • the third ferrule and the fourth ferrule are connected by a plurality of ribs, and the plurality of ribs are spaced apart
  • a plurality of the air inlets are formed, the third ring is fixedly connected to the rotor yoke, and the fourth ring is sleeved on the second bearing.
  • the first bearing is two, one of which is mounted on the upper end of the shaft hole and the other one is mounted on the lower end of the shaft ⁇ L.
  • the first bearing and the second bearing are both rolling bearings.
  • FIG. 1 is a schematic structural view of a brushless DC motor according to an embodiment of the present invention.
  • FIG. 2 is a cross-sectional view of a brushless DC motor according to an embodiment of the present invention
  • 3 is a schematic structural view of an upper end cover according to an embodiment of the present invention
  • FIG. 4 is a schematic structural view of a lower end cover according to an embodiment of the present invention.
  • stator 1, stator, 2, rotor, 3, motor shaft, 4, first bearing, 5, upper end cover, 6, lower end cover, 7, second bearing, 10, stator core, 10a, shaft hole, 11 , field winding, l la, first heat dissipation channel, 20, rotor yoke, 20a, second heat dissipation channel, 21, magnet, 50, first set of rings, 50a, air outlet, 51, second ferrule, 52, Ribs, 53, sleeve, 60, third ring, 60a, air inlet, 61, fourth sleeve, 62, ribs.
  • the brushless DC motor includes a stator 1, a rotor 2 that is rotatable relative to the stator 1, and a motor shaft 3 that is fixedly coupled to the rotor 2.
  • the stator 1 The stator core 10 and the field winding 11 are disposed.
  • the field winding 11 is disposed on a stator core 10.
  • the rotor 2 includes a rotor yoke 20 and at least two magnets 21, and the magnets 21 are spaced apart from the rotor yoke 20.
  • the excitation winding 11 is disposed opposite to the magnet 2 1 and has an annular first heat dissipation channel 11a.
  • the stator core 10 is provided with a plurality of second heat dissipation channels 20a, and the second heat dissipation channel 20a is along The axial arrangement of the stator core 10.
  • a current flows through the field winding 11
  • a rotating magnetic field is generated on the stator core 10
  • the magnet on the rotor yoke 20 is subjected to a magnetic field force to rotate the rotor yoke 20 relative to the stator core 10. , thereby driving the motor shaft 3 to rotate.
  • the current flowing through the field winding 11 generates a large amount of heat which is quickly exhausted through the first heat dissipation passage 11a and the second heat dissipation passage 20a, thereby greatly alleviating the heat dissipation problem of the motor and protecting the components of the motor from damage. Moreover, since a plurality of second heat dissipation passages 20a are provided on the stator core 10, the quality of the stator core 10 is alleviated, thereby reducing the overall quality.
  • the rotor 2 is disposed outside the stator 1, the stator core 10 is provided with a shaft hole 10a, the motor shaft 3 passes through the shaft hole 10a, and the motor shaft A first bearing 4 is mounted between the stator core 10 and the stator core 10, and the magnets 21 are spaced apart from the inner side of the rotor yoke 20.
  • the outer rotor brushless DC motor has high efficiency and good heat dissipation.
  • the brushless DC motor of the embodiment further includes an upper end cover 5 and a lower end cover 6.
  • the upper end cover 5 is disposed outside the motor shaft 3 and is fixedly connected to the rotor yoke 20, and the upper end cover 5 is provided with an air outlet 50a communicating with the first heat dissipation passage 11a and the second heat dissipation passage 20a, and the lower end cover 6 sets are disposed outside the stator core 10 and fixedly connected to the rotor yoke 20, and the lower end cover 6 is provided with an air inlet 60a communicating with the first heat dissipation passage 11a.
  • the cold air enters from the inlets below the air inlet 60a and the second heat dissipation channel 20a, and is discharged through the first heat dissipation passage 11a and the second heat dissipation passage 20a through the air outlet 50a to ensure good heat dissipation.
  • the air outlet 50a is a plurality of
  • the upper end cover 5 includes a first ferrule 50 and a second ferrule 51
  • the first ferrule 50 and the second ferrule 51 pass through a plurality of ribs.
  • the plates 52 are connected to each other, and a plurality of the ribs 52 are spaced apart to form a plurality of the air outlets 50a.
  • the plurality of air outlets 50a can dissipate the heat generated by the weirs, and the same function of reducing the quality of the whole machine.
  • the first ferrule 50 is provided with a sleeve 53, the sleeve 53 is closely coupled to the motor shaft 3, and the motor shaft 3 is coupled to the upper end cover 5 via a sleeve 53. Since the upper end cover 5 is fixedly coupled to the rotor yoke 20, the rotor 2 is also fixedly coupled to the motor shaft 3. Further, the ribs 52 are radially distributed around the sleeve 53 to form a turbine shape. When the motor shaft 3 drives the upper end cover 5 to rotate, the heat can be effectively extracted and discharged.
  • a second bearing 7 is mounted between the lower end cover 6 and the stator core 10, so that the lower end cover 6 connected to the rotor yoke 20 is smoothly rotated.
  • the air inlet 60a is a plurality of, the lower end cover 6 includes a third ferrule 60 and a fourth ferrule 61.
  • the third ferrule 60 and the fourth ferrule 61 are connected by a plurality of ribs 62, and a plurality of ribs 62 is spaced apart to form a plurality of the air inlets 60a, the third ferrule 60 is fixedly connected to the rotor yoke 20, the fourth ferrule 61 is sleeved on the second bearing 7, and the plurality of air inlets 60a can ⁇ Introduction of cold air, the same function of reducing the quality of the whole machine.
  • the first bearing 4 is two, one of which is mounted on the upper end of the shaft hole 10a, and the other one is mounted on the lower end of the shaft hole 10a, so that the motor shaft 3 rotates smoothly.
  • the first bearing 4 and the second bearing 7 are both rolling bearings, and have the advantages of small friction resistance, small power consumption, high mechanical efficiency, and easy starting.
  • the plurality of magnets 21 are plural, and the plurality of the magnets 21 are evenly distributed on the inner side surface of the rotor yoke 20, thereby effectively increasing the power of the brushless DC motor.
  • the brushless DC motor of the present invention generates a rotating magnetic field on the stator core when a current flows through the field winding, and the magnet on the rotor yoke is subjected to a magnetic field force to rotate the rotor yoke relative to the stator core. , thereby driving the motor shaft to rotate.
  • the current flowing through the field winding generates a large amount of heat, which is quickly dissipated through the first heat dissipation channel and the second heat dissipation channel, thereby greatly mitigating the heat dissipation problem of the motor and protecting the components of the motor from damage.
  • a plurality of second heat dissipation channels are disposed on the stator core, the quality of the stator core is reduced, thereby reducing the quality of the whole machine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Motor Or Generator Frames (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)

Abstract

一种无刷直流电动机,包括定子(1)、与定子(1)可相对转动的转子(2)、与转子(2)固定连接的电机轴(3),定子(1)包括定子铁芯(10)及励磁绕组(11),励磁绕组(11)设置在定子铁芯(10)上,转子(2)包括转子磁轭(20)及至少两个磁体(21),磁体(21)间隔设置在转子磁轭(20)上,励磁绕组(11)与磁体(21)相对设置并留有环形的第一散热通道(11a),定子铁芯(10)上设有多个第二散热通道(20a),第二散热通道(20a)沿定子铁芯(10)的轴向布置。在运行时,流经励磁绕组(11)的电流会产生大量的热量,这些热量会迅速通过第一散热通道(11a)及第二散热通道(20a)排走,因此能大大缓解电动机的散热问题,保护电动机的部件不受损坏。而且由于在定子铁芯(10)上设置了多个第二散热通道(20a),减轻了定子铁芯(10)的质量,从而减轻了整机质量。

Description

说明书 发明名称:无刷直流电动机
技术领域
[0001] 本发明涉及电动机技术领域, 特别涉及一种无刷直流电动机。
背景技术
[0002] 电动机是一种能量转换装置, 是通过电磁现象将电能转换为动能的设备。 近年 来, 随着永磁材料、 自动控制以及电力电子技术的进步, 无刷直流电动机得到 了较好的发展。 无刷直流电动机由电动机主体和驱动器组成, 是一种典型的机 电一体化产品。 无刷直流电动机内部含有很多电子元器件, 在工作吋功率元件 产生大量的热量, 如果不能得到及吋的散热, 容易造成损坏。 现有技术中已经 出现 15Kw以上的无刷直流电动机, 这种电动机的体积大, 重量大, 需要采用液 体冷却系统来解决散热问题, 结构复杂。 这些原因导致其主要应用于工业, 并 不适合于载人飞行器领域。
技术问题
[0003] 基于此, 本发明在于克服现有技术的缺陷, 提供一种无刷直流电动机, 散热性 能好, 质量较轻。
问题的解决方案
技术解决方案
[0004] 其技术方案如下:
[0005] 一种无刷直流电动机, 包括定子、 与定子可相对转动的转子、 与转子固定连接 的电机轴, 所述定子包括定子铁芯及励磁绕组, 所述励磁绕组设置在定子铁芯 上, 所述转子包括转子磁轭及至少两个磁体, 所述磁体间隔设置在转子磁轭上 , 所述励磁绕组与磁体相对设置并留有环形的第一散热通道, 所述定子铁芯上 设有多个第二散热通道, 所述第二散热通道沿定子铁芯的轴向布置。
[0006] 优选的, 所述转子设置在定子外部, 所述定子铁芯上设有轴孔, 所述电机轴穿 过所述轴孔, 且所述电机轴与定子铁芯之间安装有第一轴承, 所述磁体间隔设 置在转子磁轭的内侧面上。 [0007] 优选的, 所述无刷直流电动机还包括上端盖及下端盖, 所述上端盖套设在电机 轴外并与转子磁轭固定连接, 所述上端盖上设有与第一散热通道及第二散热通 道连通的出风口, 所述下端盖套设在定子铁芯外并与转子磁轭固定连接, 所述 下端盖上设有与第一散热通道连通的进风口。
[0008] 优选的, 所述出风口为多个, 所述上端盖包括第一套圈及第二套圈, 所述第一 套圈及第二套圈通过多个肋板连接, 多个肋板间隔设置形成多个所述出风口。
[0009] 优选的, 所述第一套圈上设有套筒, 所述套筒与电机轴紧密配合。
[0010] 优选的, 所述肋板以套筒为中心呈放射状分布。
[0011] 优选的, 所述下端盖与定子铁芯之间安装有第二轴承。
[0012] 优选的, 所述进风口为多个, 所述下端盖包括第三套圈及第四套圈, 所述第三 套圈及第四套圈通过多个肋条连接, 多个肋条间隔设置形成多个所述进风口, 所述第三套圈与转子磁轭固定连接, 所述第四套圈套设在第二轴承上。
[0013] 优选的, 所述第一轴承为两个, 其中一个安装在轴孔上端, 另外一个安装在轴 孑 L下端。
[0014] 优选的, 所述第一轴承与第二轴承均为滚动轴承。
发明的有益效果
有益效果
[0015] 下面对前述技术方案的优点或原理进行说明:
[0016] 上述无刷直流电动机, 当电流流经励磁绕组吋会在定子铁芯上产生旋转磁场, 转子磁轭上的磁铁受到磁场力的作用, 使转子磁轭相对于定子铁芯旋转, 从而 带动电机轴转动。 流经励磁绕组的电流会产生大量的热量, 这些热量会迅速通 过第一散热通道及第二散热通道排走, 因此能大大缓解电动机的散热问题, 保 护电动机的部件不受损坏。 而且由于在定子铁芯上设置了多个第二散热通道, 减轻了定子铁芯的质量, 从而减轻了整机质量。
对附图的简要说明
附图说明
[0017] 图 1为本发明实施例所述的无刷直流电动机的结构示意图;
[0018] 图 2为本发明实施例所述的无刷直流电动机的剖视示意图; [0019] 图 3为本发明实施例所述的上端盖的结构示意图;
[0020] 图 4为本发明实施例所述的下端盖的结构示意图。
[0021] 附图标记说明:
[0022] 1、 定子, 2、 转子, 3、 电机轴, 4、 第一轴承, 5、 上端盖, 6、 下端盖, 7、 第二轴承, 10、 定子铁芯, 10a、 轴孔, 11、 励磁绕组, l la、 第一散热通道, 20 、 转子磁轭, 20a、 第二散热通道, 21、 磁体, 50、 第一套圈, 50a、 出风口, 51 、 第二套圈, 52、 肋板, 53、 套筒, 60、 第三套圈, 60a、 进风口, 61、 第四套 筒, 62、 肋条。
本发明的实施方式
[0023] 下面对本发明的实施例进行详细说明:
[0024] 如图 1、 2所示, 本实施例所述的无刷直流电动机, 包括定子 1、 与定子 1可相对 转动的转子 2、 与转子 2固定连接的电机轴 3, 所述定子 1包括定子铁芯 10及励磁 绕组 11, 所述励磁绕组 11设置在定子铁芯 10上, 所述转子 2包括转子磁轭 20及至 少两个磁体 21, 所述磁体 21间隔设置在转子磁轭 20上, 所述励磁绕组 11与磁体 2 1相对设置并留有环形的第一散热通道 l la, 所述定子铁芯 10上设有多个第二散热 通道 20a, 所述第二散热通道 20a沿定子铁芯 10的轴向布置。 上述无刷直流电动机 , 当电流流经励磁绕组 11吋会在定子铁芯 10上产生旋转磁场, 转子磁轭 20上的 磁铁受到磁场力的作用, 使转子磁轭 20相对于定子铁芯 10旋转, 从而带动电机 轴 3转动。 流经励磁绕组 11的电流会产生大量的热量, 这些热量会迅速通过第一 散热通道 11a及第二散热通道 20a排走, 因此能大大缓解电动机的散热问题, 保护 电动机的部件不受损坏。 而且由于在定子铁芯 10上设置了多个第二散热通道 20a , 减轻了定子铁芯 10的质量, 从而减轻了整机质量。
[0025] 如图 2所示, 所述转子 2设置在定子 1外部, 所述定子铁芯 10上设有轴孔 10a, 所 述电机轴 3穿过所述轴孔 10a, 且所述电机轴 3与定子铁芯 10之间安装有第一轴承 4 , 所述磁体 21间隔设置在转子磁轭 20的内侧面上, 外转子无刷直流电动机效率 高, 散热好。
[0026] 如图 3、 4所示, 本实施例所述的无刷直流电动机还包括上端盖 5及下端盖 6, 所 述上端盖 5套设在电机轴 3外并与转子磁轭 20固定连接, 所述上端盖 5上设有与第 一散热通道 11a及第二散热通道 20a连通的出风口 50a, 所述下端盖 6套设在定子铁 芯 10外并与转子磁轭 20固定连接, 所述下端盖 6上设有与第一散热通道 11a连通的 进风口 60a。 无刷直流电动机运行吋, 冷空气会从进风口 60a及第二散热通道 20a 下方入口进入, 通过第一散热通道 11 a及第二散热通道 20a后经由出风口 50a排出 , 保证散热良好。
[0027] 优选的, 所述出风口 50a为多个, 所述上端盖 5包括第一套圈 50及第二套圈 51, 所述第一套圈 50及第二套圈 51通过多个肋板 52连接, 多个肋板 52间隔设置形成 多个所述出风口 50a, 多个出风口 50a能够及吋排走产生的热量, 同吋也具有减轻 整机质量的作用。 所述第一套圈 50上设有套筒 53, 所述套筒 53与电机轴 3紧密配 合, 电机轴 3通过套筒 53与上端盖 5连接。 由于上端盖 5是与转子磁轭 20固定连接 的, 因而转子 2也与电机轴 3固定连接。 进一步的, 所述肋板 52以套筒 53为中心 呈放射状分布, 形成涡轮状, 当电机轴 3带动上端盖 5转动吋, 能有效导出热量 并排出。
[0028] 如图 1、 4所示, 所述下端盖 6与定子铁芯 10之间安装有第二轴承 7, 使连接在转 子磁轭 20上的下端盖 6转动顺畅。 所述进风口 60a为多个, 所述下端盖 6包括第三 套圈 60及第四套圈 61, 所述第三套圈 60及第四套圈 61通过多个肋条 62连接, 多 个肋条 62间隔设置形成多个所述进风口 60a, 所述第三套圈 60与转子磁轭 20固定 连接, 所述第四套圈 61套设在第二轴承 7上, 多个进风口 60a能够及吋导入冷空气 , 同吋也具有减轻整机质量的作用。
[0029] 在本实施例中, 所述第一轴承 4为两个, 其中一个安装在轴孔 10a上端, 另外一 个安装在轴孔 10a下端, 使得电机轴 3转动顺畅。 优选的, 所述第一轴承 4与第二 轴承 7均为滚动轴承, 具有摩擦阻力小, 功率消耗小, 机械效率高, 易起动的优 点。 所述磁体 21为多个, 多个所述磁体 21均匀分布在转子磁轭 20的内侧面上, 有效提高无刷直流电动机的功率。
[0030] 以上所述实施例的各技术特征可以进行任意的组合, 为使描述简洁, 未对上述 实施例中的各个技术特征所有可能的组合都进行描述, 然而, 只要这些技术特 征的组合不存在矛盾, 都应当认为是本说明书记载的范围。 [0031] 以上所述实施例仅表达了本发明的几种实施方式, 其描述较为具体和详细, 但 并不能因此而理解为对发明专利范围的限制。 应当指出的是, 对于本领域的普 通技术人员来说, 在不脱离本发明构思的前提下, 还可以做出若干变形和改进 , 这些都属于本发明的保护范围。 因此, 本发明专利的保护范围应以所附权利 要求为准。
工业实用性
[0032] 本发明的无刷直流电动机, 当电流流经励磁绕组吋会在定子铁芯上产生旋转磁 场, 转子磁轭上的磁铁受到磁场力的作用, 使转子磁轭相对于定子铁芯旋转, 从而带动电机轴转动。 流经励磁绕组的电流会产生大量的热量, 这些热量会迅 速通过第一散热通道及第二散热通道排走, 因此能大大缓解电动机的散热问题 , 保护电动机的部件不受损坏。 而且由于在定子铁芯上设置了多个第二散热通 道, 减轻了定子铁芯的质量, 从而减轻了整机质量。

Claims

权利要求书
一种无刷直流电动机, 其中包括定子、 与定子可相对转动的转子、 与 转子固定连接的电机轴, 所述定子包括定子铁芯及励磁绕组, 所述励 磁绕组设置在定子铁芯上, 所述转子包括转子磁轭及至少两个磁体, 所述磁体间隔设置在转子磁轭上, 所述励磁绕组与磁体相对设置并留 有环形的第一散热通道, 所述定子铁芯上设有多个第二散热通道, 所 述第二散热通道沿定子铁芯的轴向布置。
根据权利要求 1所述的无刷直流电动机, 其中, 所述转子设置在定子 外部, 所述定子铁芯上设有轴孔, 所述电机轴穿过所述轴孔, 且所述 电机轴与定子铁芯之间安装有第一轴承, 所述磁体间隔设置在转子磁 轭的内侧面上。
根据权利要求 2所述的无刷直流电动机, 其中, 还包括上端盖及下端 盖, 所述上端盖套设在电机轴外并与转子磁轭固定连接, 所述上端盖 上设有与第一散热通道及第二散热通道连通的出风口, 所述下端盖套 设在定子铁芯外并与转子磁轭固定连接, 所述下端盖上设有与第一散 热通道连通的进风口。
根据权利要求 3所述的无刷直流电动机, 其中, 所述出风口为多个, 所述上端盖包括第一套圈及第二套圈, 所述第一套圈及第二套圈通过 多个肋板连接, 多个肋板间隔设置形成多个所述出风口。
根据权利要求 4所述的无刷直流电动机, 其中, 所述第一套圈上设有 套筒, 所述套筒与电机轴紧密配合。
根据权利要求 5所述的无刷直流电动机, 其中, 所述肋板以套筒为中 心呈放射状分布。
根据权利要求 3所述的无刷直流电动机, 其中, 所述下端盖与定子铁 芯之间安装有第二轴承。
根据权利要求 7所述的无刷直流电动机, 其中, 所述进风口为多个, 所述下端盖包括第三套圈及第四套圈, 所述第三套圈及第四套圈通过 多个肋条连接, 多个肋条间隔设置形成多个所述进风口, 所述第三套 圈与转子磁轭固定连接, 所述第四套圈套设在第二轴承上。
[权利要求 9] 根据权利要求 7所述的无刷直流电动机, 其中, 所述第一轴承为两个
, 其中一个安装在轴孔上端, 另外一个安装在轴孔下端。
[权利要求 10] 根据权利要求 9所述的无刷直流电动机, 其中, 所述第一轴承与第二 轴承均为滚动轴承。
PCT/CN2016/106634 2015-12-25 2016-11-21 无刷直流电动机 WO2017107723A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201511008638.0 2015-12-25
CN201511008638.0A CN105449888A (zh) 2015-12-25 2015-12-25 无刷直流电动机

Publications (1)

Publication Number Publication Date
WO2017107723A1 true WO2017107723A1 (zh) 2017-06-29

Family

ID=55559791

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2016/106634 WO2017107723A1 (zh) 2015-12-25 2016-11-21 无刷直流电动机

Country Status (2)

Country Link
CN (1) CN105449888A (zh)
WO (1) WO2017107723A1 (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105449888A (zh) * 2015-12-25 2016-03-30 广州亿航智能技术有限公司 无刷直流电动机
CN107492977A (zh) * 2017-09-21 2017-12-19 明程电机技术(深圳)有限公司 离心风道散热电机
CN109713813A (zh) * 2019-02-02 2019-05-03 沈阳工大电机有限公司 一种新型双外冷外转子永磁同步电机

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005013461A1 (de) * 2003-07-31 2005-02-10 Siemens Aktiengesellschaft Elektrische maschine mit kühlmittelführungskanal sowie entsprechendes kühlverfahren
CN102324796A (zh) * 2011-09-15 2012-01-18 东莞市伊动新能源科技有限公司 液冷散热式外转子电机
CN104702073A (zh) * 2015-03-11 2015-06-10 无锡新大力电机有限公司 一体式螺杆空压机外转子永磁电机
CN105449888A (zh) * 2015-12-25 2016-03-30 广州亿航智能技术有限公司 无刷直流电动机

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1354345A1 (ru) * 1985-08-16 1987-11-23 Производственное Объединение "Ворошиловградский Тепловозостроительный Завод" Им.Октябрьской Революции Электродвигатель
CN101087077A (zh) * 2006-06-07 2007-12-12 梁昌勇 没有前后端盖的汽车永磁发电机
CN101752935B (zh) * 2008-12-03 2011-07-20 中山大洋电机股份有限公司 一种外转子电机的壳体结构及利用该壳体制造的转子部件
CN202721533U (zh) * 2012-06-29 2013-02-06 中山大洋电机股份有限公司 一种新型端盖及其应用的外转子电机
CN202918162U (zh) * 2012-10-31 2013-05-01 中山大洋电机股份有限公司 一种直流无刷外转子电机结构
CN205319809U (zh) * 2015-12-25 2016-06-15 广州亿航智能技术有限公司 无刷直流电动机

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005013461A1 (de) * 2003-07-31 2005-02-10 Siemens Aktiengesellschaft Elektrische maschine mit kühlmittelführungskanal sowie entsprechendes kühlverfahren
CN102324796A (zh) * 2011-09-15 2012-01-18 东莞市伊动新能源科技有限公司 液冷散热式外转子电机
CN104702073A (zh) * 2015-03-11 2015-06-10 无锡新大力电机有限公司 一体式螺杆空压机外转子永磁电机
CN105449888A (zh) * 2015-12-25 2016-03-30 广州亿航智能技术有限公司 无刷直流电动机

Also Published As

Publication number Publication date
CN105449888A (zh) 2016-03-30

Similar Documents

Publication Publication Date Title
EP3127225B1 (en) Stator module of an electric machine comprising an permanent magnet rotor
KR101996320B1 (ko) 원통 코일을 포함한 고정자를 갖춘 무철심 회전 전기 기계 및 그 냉각 방법
US8970075B2 (en) Liquid cooled electric motor
US8760016B2 (en) Electric machine with enhanced cooling
WO2014036883A1 (zh) 永磁叠层电机
WO2011095066A1 (zh) 一种用于垂直轴盘式电机的磁悬浮支撑结构
JP2012085517A5 (zh)
JP6194319B2 (ja) 電気機械式フライホイール格納システム
JP6456945B2 (ja) 電動機用の回転子
JP6253520B2 (ja) 回転電機
WO2017107723A1 (zh) 无刷直流电动机
KR20140106560A (ko) 전자 기계식 플라이휠
CN101702558A (zh) 盘式永磁风力发电机
EP3007329A2 (en) End turn support and cooling fixture
KR101968472B1 (ko) 자연냉각 기능을 갖는 터보 블로워 장치
CN205319809U (zh) 无刷直流电动机
EP3070816B1 (en) Method and assembly for cooling an electric machine
KR20150082587A (ko) 전기 모터의 액체 냉각을 위한 방법 및 장치
CN210744861U (zh) 一种柱式无铁芯电机
WO2017070976A1 (zh) 全节能动力机
CN203872021U (zh) 一种独立绕线的外转子电机
EP3813232B1 (en) Column type coreless motor
EP3648304A2 (en) Stator core comprising cobalt carbide and method of making the same
CN103997175A (zh) 一种独立绕线的外转子电机

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16877534

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 16877534

Country of ref document: EP

Kind code of ref document: A1