WO2017107315A1 - 一种外转子电机的塑封定子及其应用的外转子电机 - Google Patents

一种外转子电机的塑封定子及其应用的外转子电机 Download PDF

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Publication number
WO2017107315A1
WO2017107315A1 PCT/CN2016/075897 CN2016075897W WO2017107315A1 WO 2017107315 A1 WO2017107315 A1 WO 2017107315A1 CN 2016075897 W CN2016075897 W CN 2016075897W WO 2017107315 A1 WO2017107315 A1 WO 2017107315A1
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WIPO (PCT)
Prior art keywords
plastic
stator
outer rotor
cavity
rotor motor
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PCT/CN2016/075897
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English (en)
French (fr)
Inventor
曾崇生
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中山大洋电机股份有限公司
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Publication of WO2017107315A1 publication Critical patent/WO2017107315A1/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
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching

Definitions

  • the utility model relates to a plastic-sealed stator of an outer rotor motor and an outer rotor motor thereof, which belong to the technical field of motors.
  • the Hall circuit board In the plastic-sealed stator used in the outer rotor motor, the Hall circuit board is generally installed on the end insulation first, and then the Hall circuit board is integrated with the stator core, the end insulation and the coil winding by an injection molding process.
  • the assembly process is cumbersome and demanding, and it is easy to impact the already-fixed Hall circuit board during the injection molding process, causing a positional shift, or the high-temperature injection molding material is liable to cause damage to the Hall element. Both will affect the detection accuracy of the Hall element, which in turn affects the normal operation of the motor.
  • the first object of the present invention is to provide a plastic-sealed stator of an outer rotor motor, which has a simple structure and convenient installation;
  • a second object of the present invention is to provide an outer rotor motor which is simple in structure and reliable in operation.
  • a plastically sealed stator of an outer rotor motor comprising a stator core, an end insulation, a coil winding and a plastic body, the end insulation is mounted on an end face of the stator core, the coil winding is wound around the end insulation, and the end is insulated
  • a plurality of terminal blocks are mounted thereon, and the terminal blocks are electrically connected with the coil windings.
  • the plastic sealing body integrally connects the stator core, the end insulation and the coil windings, and is provided with a plastic end plate on one end of the stator core and the plastic sealing body.
  • a cavity is formed on the top surface of the plastic end plate, and a Hall circuit board is installed in the cavity, and the terminal extends from the plastic sealing body into the cavity and is electrically connected with the Hall circuit board, and the Hall circuit board The lead wire protrudes outward from the cavity.
  • the inner wall of the cavity is provided with a first step, and the terminal protrudes from the first step.
  • the Hall circuit board is supported on the first step and electrically connected to the terminal.
  • the above-mentioned opening at the top of the cavity is provided with a second step, on which the second step is mounted
  • the gland the gland seals the opening at the top of the cavity.
  • the bottom wall of the cavity is provided with a plurality of grooves, and the Hall element disposed at the bottom of the Hall circuit board extends into the groove, and the sealing plate is mounted on the end insulation, and the terminal is from the sealing plate Pass in the middle.
  • the two retaining sleeves disposed between the second step and the gland, and the two retaining sleeves are respectively located on one side of the gland, and the lead wires on the Hall circuit board include a power lead-out line and a Hall lead-out line.
  • the power lead-out line protrudes from the middle of one of the retaining sleeves, and the Hall lead-out line extends from the middle of the other retaining sleeve and then protrudes outward.
  • the plastically sealed stator further includes a sleeve seat, the sleeve seat is sleeved in the shaft hole in the middle of the stator core, a plurality of legs are protruded from the outer edge of the top of the sleeve seat, and a mounting hole is arranged on the outer edge of the leg, the plastic sleeve is provided The end plates are wrapped around the legs and the mounting holes on the outer edges of the legs are exposed from the top surface of the molded end plates.
  • the number of the above-mentioned legs is four, and two of the adjacent legs are provided with screw holes in the middle, the screw holes are exposed from the top surface of the plastic end plate, the screws pass through the gland and are screwed into the screw holes Install the gland on the top surface of the plastic end plate.
  • An outer rotor motor includes a rotating shaft, a plastic stator and an outer rotor.
  • the outer rotor is sleeved outside the plastic stator, and the rotating shaft is installed in the middle of the plastic stator and is connected with the outer rotor.
  • the plastic stator is the plastic stator described above.
  • the outer rotor comprises a casing sleeve and a plurality of permanent magnets.
  • the plurality of permanent magnets are circumferentially spaced apart on the inner wall surface of the casing sleeve, and the adjacent two permanent magnets are separated by a spring piece.
  • the motor controller is mounted on the top of the molded stator.
  • a cavity is formed on the top surface of the plastic end plate, and a Hall circuit board is installed in the cavity, and the terminal extends from the plastic body into the cavity and is electrically connected with the Hall circuit board, and the Hall line
  • the lead wire on the board protrudes from the cavity, and the installation of the Hall circuit board is convenient and firm.
  • the assembly process is simple and the requirements are low, and the power lead-out line and the Hall lead-out line on the Hall circuit board can be unified.
  • the cavity protrudes outwardly, which facilitates the connection of the lead wires, thereby improving assembly efficiency and connection reliability;
  • a first step is arranged on the inner wall of the cavity, and the terminal protrudes from the first step, the The circuit board is supported on the first step and electrically connected to the terminal, and has a simple structure, convenient positioning, installation, and electrical connection between the terminal and the Hall circuit board;
  • a second step is arranged at the opening at the top of the cavity, and a gland is mounted on the second step, and the gland seals the opening at the top of the cavity, thereby ensuring the installation environment of the Hall circuit board Sealing, so as to achieve the purpose of ensuring Hall detection accuracy and extending the life of the Hall;
  • the installation of the Hall circuit board is simple and convenient, and the precision is high, and it is not easily damaged, thereby ensuring the detection precision of the Hall element, thereby achieving the purpose of ensuring safe operation of the motor.
  • Figure 1 is a perspective view of a molded stator in an embodiment
  • Figure 2 is a plan view of the molded stator in the embodiment
  • Figure 3 is a cross-sectional view taken along line A-A of Figure 2;
  • Figure 4 is an exploded view of the molded stator in the embodiment
  • Figure 5 is a partial exploded view of the molded stator in the embodiment
  • Figure 6 is a perspective view of a molded stator in which the plastic body is not attached in the embodiment
  • Figure 7 is an exploded view of the molded stator without the plastic body installed in the embodiment
  • Figure 8 is a perspective view of the outer rotor motor in the embodiment.
  • Figure 9 is a cross-sectional view showing the structure of an outer rotor motor in which no motor controller is mounted in the embodiment
  • Figure 10 is a perspective view of the outer rotor in the embodiment.
  • Embodiment 1 As shown in FIG. 1 to FIG. 7 , this embodiment is a plastic-sealed stator of an outer rotor motor, comprising a stator core 11 , an end insulation 12 , a coil winding 13 and a molding body 14 , and an end insulation 12 is mounted.
  • the end insulation 12 On the end face of the stator core 11, preferably, the end insulation 12 is injection molded on the outside of the stator core 11, the coil winding 13 is disposed on the end insulation 12, and a plurality of the end insulation 12 are mounted on the end insulation 12.
  • the terminal 2 and the terminal 2 are electrically connected to the coil winding 13.
  • the molded body 14 integrally connects the stator core 11, the end insulation 12 and the coil winding 13 to one end of the stator core 11 and the molding body 14
  • the plastic end plate 15 is provided with a cavity 16 on the top surface of the plastic end plate 15, and a Hall circuit board 3 is mounted inside the cavity 16, and the terminal 2 extends from the molding body 14 into the cavity 16 and the Hall.
  • the circuit boards 3 are electrically connected together, and the lead wires on the Hall circuit board 3 project outward from the cavity 16.
  • a first step 161 is disposed on the inner wall of the cavity 16, and the terminal 2 extends from the first step 161, and the Hall circuit board 3 is supported on the first step 161 and connected to the terminal 2 Electrically connected together.
  • a second step 162 is provided at the opening at the top of the cavity 16, and a gland 4 is mounted on the second step 162, and the gland 4 seals the opening at the top of the cavity 16.
  • a plurality of grooves 163 are defined in the bottom wall of the cavity 16, and the Hall element 31 disposed at the bottom of the Hall circuit board 3 extends into the groove 163, and the sealing plate 5 is mounted on the end insulation 12, The terminal 2 passes through the middle of the sealing plate 5.
  • Two retaining sleeves 6 are disposed between the second step 162 and the gland 4, the two retaining sleeves 6 are respectively located on one side of the gland 4, and the lead wires on the Hall circuit board 3 include the power lead wires 32.
  • the molded stator further includes a sleeve seat 17 which is sleeved in a shaft hole in the middle of the stator core 11 and protrudes from the top outer edge of the sleeve seat 17 to a plurality of legs 171 at the outer edge of the leg 171 Mounting holes 1711 are provided thereon, and the plastic end plates 15 are wrapped around the legs 171 and the mounting holes 1711 on the outer edges of the legs 171 are exposed from the top surface of the plastic end plates 15.
  • the number of the legs 171 is four, and two adjacent legs 171 are provided with screw holes 1712 at intermediate positions thereof, the screw holes 1712 are exposed from the top surface of the plastic end plate 15, and the screws 7 pass through the gland 4 And screwed into the screw hole 1712 to mount the gland 4 on the top surface of the plastic end plate 15.
  • Embodiment 2 As shown in FIG. 8 to FIG. 10, this embodiment is an outer rotor motor including a rotating shaft 8.
  • the plastic stator and the outer rotor 9 are sleeved on the outside of the plastic stator, and the rotating shaft 8 is installed in the middle of the plastic stator and is connected with the outer rotor 9.
  • the plastic stator is the plastic stator described in the first embodiment. No longer.
  • the outer rotor 9 includes a casing sleeve 91 and a plurality of permanent magnets 92.
  • the plurality of permanent magnets 92 are circumferentially spaced apart on the inner wall surface of the casing sleeve 91, and the adjacent two permanent magnets 92 pass through the spacer.
  • the spacer is a spring piece 93 or a plastic bracket.
  • the elastic piece 93 is used as a spacer to separate the adjacent two permanent magnets 92.
  • a motor controller 10 is mounted on top of the molded stator.

Abstract

一种外转子电机的塑封定子，包括定子铁芯（11）、端部绝缘（12）、线圈绕组（13）和塑封体（14），端部绝缘安装在定子铁芯的端面上，线圈绕组绕设于端部绝缘上，在端部绝缘上安装有若干接线端子（2），接线端子与线圈绕组电连接在一起，塑封体把定子铁芯、端部绝缘和线圈绕组连结成一体，于定子铁芯一端、塑封体上设置有塑封端板（15），在塑封端板的顶面上开设有空腔（16），在空腔里面安装有霍尔线路板（3），接线端子从塑封体伸入到空腔里面与霍尔线路板电连接在一起，霍尔线路板上的引出线从空腔往外伸出。该定子结构简单、安装方便。

Description

一种外转子电机的塑封定子及其应用的外转子电机 技术领域：
本实用新型涉及一种外转子电机的塑封定子及其应用的外转子电机，属于电机技术领域。
背景技术：
现有应用于外转子电机的塑封定子中，霍尔线路板普遍都是先安装在端部绝缘上，然后采用注塑工艺把霍尔线路板与定子铁芯、端部绝缘和线圈绕组连结成一体，但是其装配工艺较为麻烦、要求较高，在注塑过程中容易对已经定位固定的霍尔线路板造成冲击，造成位置的偏移，又或者高温的注塑材料容易对霍尔元件造成损害，这都将影响霍尔元件的检测精度，进而影响电机的正常运行。
发明内容：
本实用新型的第一个目的是提供一种外转子电机的塑封定子，其结构简单、安装方便；
本实用新型的第二个目的是提供一种外转子电机，其结构简单，运行可靠。
本实用新型的目的是通过下述技术方案予以实现的。
一种外转子电机的塑封定子，包括定子铁芯、端部绝缘、线圈绕组和塑封体，端部绝缘安装在定子铁芯的端面上，线圈绕组绕设于端部绝缘上，在端部绝缘上安装有若干接线端子，接线端子与线圈绕组电连接在一起，塑封体把定子铁芯、端部绝缘和线圈绕组连结成一体，于定子铁芯一端、塑封体上设置有塑封端板，在塑封端板的顶面上开设有空腔，在空腔里面安装有霍尔线路板，接线端子从塑封体伸入到空腔里面与霍尔线路板电连接在一起，霍尔线路板上的引出线从空腔往外伸出。
上述在空腔内壁设置有第一级台阶，接线端子从第一级台阶上伸出，所述霍尔线路板支承在所述第一级台阶上并与所述接线端子电连接在一起。
上述在空腔顶部的开口处设置有第二级台阶，在所述第二级台阶上安装有 压盖，压盖把空腔顶部的开口密封。
上述在空腔的底壁设置有若干凹槽，设置在霍尔线路板底部的霍尔元件伸入到凹槽里面，在端部绝缘上安装有封胶板，所述接线端子从封胶板中间穿过。
上述在第二级台阶与压盖之间设置有2个护线套，2个护线套分别位于压盖的一侧，霍尔线路板上的引出线包括电源引出线和霍尔引出线，电源引出线从其中1个护线套中间穿过后往外伸出，霍尔引出线从另1个护线套中间穿过后往外伸出。
上述塑封定子还包括套筒座，套筒座套装在定子铁芯中间的轴孔里面，从套筒座的顶部外缘上往外伸出若干支脚，在支脚的外缘上设置有安装孔，塑封端板包裹在支脚外面并且使支脚外缘上的安装孔从塑封端板的顶面上露出。
上述支脚的数量为4个，其中2个相邻的支脚的中间位置上均设置有螺钉孔，螺钉孔从塑封端板的顶面上露出，螺钉穿过压盖并且拧进到螺钉孔里面从而把压盖安装在塑封端板的顶面上。
一种外转子电机，包括转轴、塑封定子和外转子，外转子套设于塑封定子外面，转轴安装在塑封定子中间并且与外转子连接在一起，所述塑封定子是上述所描述的塑封定子。
上述外转子包括机壳套筒和若干永磁体，若干永磁体周向间隔的安装在机壳套筒的内侧壁面上，相邻的2个永磁体之间通过弹片隔开。
上述在塑封定子的顶部安装有电机控制器。
本实用新型与现有技术相比，具有如下效果：
1)在塑封端板的顶面上开设有空腔，在空腔里面安装有霍尔线路板，接线端子从塑封体伸入到空腔里面与霍尔线路板电连接在一起，霍尔线路板上的引出线从空腔往外伸出，霍尔线路板的安装方便、牢固，其装配工艺较为简单、要求较低，并且霍尔线路板上的电源引出线和霍尔引出线可统一从空腔往外伸出，利于引出线的连接，从而可以提高装配效率和连接的可靠性；
2)在空腔内壁设置有第一级台阶，接线端子从第一级台阶上伸出，所述霍 尔线路板支承在所述第一级台阶上并与所述接线端子电连接在一起，结构简单，方便定位、安装以及接线端子与霍尔线路板之间的电连接；
3)在空腔顶部的开口处设置有第二级台阶，在所述第二级台阶上安装有压盖，压盖把空腔顶部的开口密封，由此可保证霍尔线路板安装环境的密封性，从而可达到保证霍尔检测精度以及延长霍尔使用寿命的目的；
4)在端部绝缘上安装有封胶板，所述接线端子从封胶板中间穿过，结构简单，方便接线端子的定位、安装，保证接线端子的安装精度，以使接线端子可与霍尔线路板更好地形成电连接；
5)螺钉穿过压盖并且拧进到螺钉孔里面从而把压盖安装在塑封端板的顶面上，压盖的安装简单、方便；
6)所述外转子电机中，霍尔线路板的安装简单、方便，并且精度高，不易受到损坏，由此可保证霍尔元件的检测精度，从而达到保证电机安全运行的目的。
附图说明：
图1是实施例中塑封定子的立体图；
图2是实施例中塑封定子的俯视图；
图3是图2中A-A线剖视图；
图4是实施例中塑封定子的爆炸图；
图5是实施例中塑封定子的局部爆炸图；
图6是实施例中没有安装塑封体的塑封定子立体图；
图7是实施例中没有安装塑封体的塑封定子爆炸图；
图8是实施例中外转子电机的立体图；
图9是实施例中没有安装电机控制器的外转子电机结构剖视图；
图10是实施例中外转子的立体图。
具体实施方式：
下面通过具体实施例并结合附图对本实用新型作进一步详细的描述。
实施例一：如图1至图7所示，本实施例是一种外转子电机的塑封定子，包括定子铁芯11、端部绝缘12、线圈绕组13和塑封体14，端部绝缘12安装在定子铁芯11的端面上，优选的，所述端部绝缘12是注塑包裹在定子铁芯11外面的，线圈绕组绕13设于端部绝缘12上，在端部绝缘12上安装有若干接线端子2，接线端子2与线圈绕组13电连接在一起，塑封体14把定子铁芯11、端部绝缘12和线圈绕组13连结成一体，于定子铁芯11一端、塑封体14上设置有塑封端板15，在塑封端板15的顶面上开设有空腔16，在空腔16里面安装有霍尔线路板3，接线端子2从塑封体14伸入到空腔16里面与霍尔线路板3电连接在一起，霍尔线路板3上的引出线从空腔16往外伸出。在空腔16内壁设置有第一级台阶161，接线端子2从第一级台阶161上伸出，所述霍尔线路板3支承在所述第一级台阶161上并与所述接线端子2电连接在一起。在空腔16顶部的开口处设置有第二级台阶162，在所述第二级台阶162上安装有压盖4，压盖4把空腔16顶部的开口密封。在空腔16的底壁设置有若干凹槽163，设置在霍尔线路板3底部的霍尔元件31伸入到凹槽163里面，在端部绝缘12上安装有封胶板5，所述接线端子2从封胶板5中间穿过。在第二级台阶162与压盖4之间设置有2个护线套6，2个护线套6分别位于压盖4的一侧，霍尔线路板3上的引出线包括电源引出线32和霍尔引出线33，电源引出线32从其中1个护线套6中间穿过后往外伸出，霍尔引出线33从另1个护线套6中间穿过后往外伸出。所述塑封定子还包括套筒座17，套筒座17套装在定子铁芯11中间的轴孔里面，从套筒座17的顶部外缘上往外伸出若干支脚171，在支脚171的外缘上设置有安装孔1711，塑封端板15包裹在支脚171外面并且使支脚171外缘上的安装孔1711从塑封端板15的顶面上露出。所述支脚171的数量为4个，其中2个相邻的支脚171的中间位置上均设置有螺钉孔1712，螺钉孔1712从塑封端板15的顶面上露出，螺钉7穿过压盖4并且拧进到螺钉孔1712里面从而把压盖4安装在塑封端板15的顶面上。
实施例二：如图8至图10所示，本实施例是一种外转子电机，包括转轴8、 塑封定子和外转子9，外转子9套设于塑封定子外面，转轴8安装在塑封定子中间并且与外转子9连接在一起，所述塑封定子是实施例一中所描述的塑封定子，在此不再赘述。
所述外转子9包括机壳套筒91和若干永磁体92，若干永磁体92周向间隔的安装在机壳套筒91的内侧壁面上，相邻的2个永磁体92之间通过隔离件隔开，所述隔离件是弹片93或者塑料支架，本实施例中，优选的，采用弹片93作为隔离件把相邻的2个永磁体92隔开。在塑封定子的顶部安装有电机控制器10。
以上实施例为本发明的较佳实施方式，但本发明的实施方式不限于此，其他任何未背离本发明的精神实质与原理下所作的改变、修饰、替代、组合、简化，均为等效的置换方式，都包含在本发明的保护范围之内。

Claims (10)

  1. 一种外转子电机的塑封定子，包括定子铁芯(11)、端部绝缘(12)、线圈绕组(13)和塑封体(14)，端部绝缘(12)安装在定子铁芯(11)的端面上，线圈绕组绕(13)设于端部绝缘(12)上，在端部绝缘(12)上安装有若干接线端子(2)，接线端子(2)与线圈绕组(13)电连接在一起，塑封体(14)把定子铁芯(11)、端部绝缘(12)和线圈绕组(13)连结成一体，于定子铁芯(11)一端、塑封体(14)上设置有塑封端板(15)，其特征在于：在塑封端板(15)的顶面上开设有空腔(16)，在空腔(16)里面安装有霍尔线路板(3)，接线端子(2)从塑封体(14)伸入到空腔(16)里面与霍尔线路板(3)电连接在一起，霍尔线路板(3)上的引出线从空腔(16)往外伸出。
  2. 根据权利要求1所述的一种外转子电机的塑封定子，其特征在于：在空腔(16)内壁设置有第一级台阶(161)，接线端子(2)从第一级台阶(161)上伸出，所述霍尔线路板(3)支承在所述第一级台阶(161)上并与所述接线端子(2)电连接在一起。
  3. 根据权利要求2所述的一种外转子电机的塑封定子，其特征在于：在空腔(16)顶部的开口处设置有第二级台阶(162)，在所述第二级台阶(162)上安装有压盖(4)，压盖(4)把空腔(16)顶部的开口密封。
  4. 根据权利要求1或2或3所述的一种外转子电机的塑封定子，其特征在于：在空腔(16)的底壁设置有若干凹槽(163)，设置在霍尔线路板(3)底部的霍尔元件(31)伸入到凹槽(163)里面，在端部绝缘(12)上安装有封胶板(5)，所述接线端子(2)从封胶板(5)中间穿过。
  5. 根据权利要求3所述的一种外转子电机的塑封定子，其特征在于：在第二级台阶(162)与压盖(4)之间设置有2个护线套(6)，2个护线套(6)分别位于压盖(4)的一侧，霍尔线路板(3)上的引出线包括电源引出线(32)和霍尔引出线(33)，电源引出线(32)从其中1个护线套(6)中间穿过后往外伸出，霍尔引出线(33)从另1个护线套(6)中间穿过后往外伸出。
  6. 根据权利要求3或5所述的一种外转子电机的塑封定子，其特征在于：所述塑封定子还包括套筒座(17)，套筒座(17)套装在定子铁芯(11)中间的轴孔里面，从套筒座(17)的顶部外缘上往外伸出若干支脚(171)，在支脚(171)的外缘上设置有安装孔(1711)，塑封端板(15)包裹在支脚(171)外面并且使支脚(171)外缘上的安装孔(1711)从塑封端板(15)的顶面上露出。
  7. 根据权利要求6所述的一种外转子电机的塑封定子，其特征在于：还包括有螺钉(7)，所述支脚(171)的数量为4个，其中2个相邻的支脚(171)的中间位置上均设置有螺钉孔(1712)，螺钉孔(1712)从塑封端板(15)的顶面上露出，螺钉(7)穿过压盖(4)并且拧进到螺钉孔(1712)里面从而把压盖(4)安装在塑封端板(15)的顶面上。
  8. 一种外转子电机，包括转轴(8)、塑封定子和外转子(9)，外转子(9)套设于塑封定子外面，转轴(8)安装在塑封定子中间并且与外转子(9)连接在一起，其特征在于：所述塑封定子是权利要求1至7任一项所描述的塑封定子。
  9. 根据权利要求9所述的一种外转子电机，其特征在于：所述外转子(9)包括机壳套筒(91)和若干永磁体(92)，若干永磁体(92)周向间隔的安装在机壳套筒(91)的内侧壁面上，相邻的2个永磁体(92)之间通过隔离件隔开。
  10. 根据权利要求9所述的一种外转子电机，其特征在于：所述隔离件是弹片(93)或者塑料支架，在塑封定子的顶部安装有电机控制器(10)。
PCT/CN2016/075897 2015-12-23 2016-03-08 一种外转子电机的塑封定子及其应用的外转子电机 WO2017107315A1 (zh)

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