WO2020034535A1 - 定子及电机 - Google Patents

定子及电机 Download PDF

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Publication number
WO2020034535A1
WO2020034535A1 PCT/CN2018/122873 CN2018122873W WO2020034535A1 WO 2020034535 A1 WO2020034535 A1 WO 2020034535A1 CN 2018122873 W CN2018122873 W CN 2018122873W WO 2020034535 A1 WO2020034535 A1 WO 2020034535A1
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WIPO (PCT)
Prior art keywords
stator
core
iron core
core units
sub
Prior art date
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PCT/CN2018/122873
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English (en)
French (fr)
Inventor
龚敏
王周叶
龙胜民
黄积光
伍尚权
周成海
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gree Electric Appliances Inc of Zhuhai
Zhuhai Kaibang Motor Manufacture Co Ltd
Original Assignee
Gree Electric Appliances Inc of Zhuhai
Zhuhai Kaibang Motor Manufacture Co Ltd
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Application filed by Gree Electric Appliances Inc of Zhuhai, Zhuhai Kaibang Motor Manufacture Co Ltd filed Critical Gree Electric Appliances Inc of Zhuhai
Publication of WO2020034535A1 publication Critical patent/WO2020034535A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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

Definitions

  • the present application relates to the technical field of driving devices, and in particular, to a stator and a motor.
  • the motor mainly includes a stator and a rotor.
  • the stator generates a rotating magnetic field
  • the rotor is cut by the magnetic field lines in the rotating magnetic field to generate a current.
  • Traditionally used stators mainly include two structures:
  • the punching structure includes multiple iron chips and two end plates arranged in a complete circle. During assembly, multiple iron chips are stacked on each other, and the stacked whole is clamped between the two end plates. Then, the end plate and multiple iron chips are welded and fixed by the hydraulic press after passing through a plurality of welding points in the circumferential direction. After welding, the oil pressure will be removed, so the overlapping height of the iron chips will rebound and be close to the welding point. The position bounce is small, and the position far away from the welding point is large, which causes the perpendicularity of the entire stator end face and the inner circle to be bad. Since the stator end face is a mounting surface, if the stator end face is not good to the inner circle, then It will cause the stator to be tilted and deform the stator.
  • stator with a good inner roundness and a good perpendicularity between the stator end face and the inner circle to address the problems of the poor inner roundness of the conventional stator and the poor perpendicularity of the stator end face and the inner circle. And motor.
  • a stator including:
  • a plurality of divided core units each adjacent two of the core units form a splicing structure with each other, and the plurality of core units are spliced to form a ring-shaped stator core through the splicing structure;
  • a collar is sleeved outside the stator core and is fixedly connected to the stator core.
  • the splicing structure includes a convex portion and a concave portion, the convex portion is disposed on one of the two adjacent core units, and the concave portion is disposed on each of the adjacent two iron cores. The other one of the core units.
  • each of the iron core units is located between two of the iron core units on two adjacent sides along the circumferential limit through two of the splicing structures located on both sides of the iron core unit, and the multiple The convex portions on the core units are arranged on the same circumference in the same circumferential direction.
  • each of the core units includes a yoke portion and a tooth portion connected to each other, and the convex portion is provided on the yoke portion of each of two adjacent core units, so The recessed portion is provided at the yoke portion of each of the two adjacent core units, and the yoke portions of the plurality of core units are spliced to form an outer circle of the stator core, and the plurality of The teeth of each core unit are spaced from each other and form an inner circle of the stator core.
  • the convex portion extends to one end of the yoke portion in a circumferential direction of the yoke portion, and an outer peripheral surface of the yoke portion smoothly transitions to an outer peripheral surface of the convex portion, and the concave portion is An opening groove formed on an outer peripheral surface of the other end of the yoke portion.
  • it further includes:
  • a plurality of skeletons each of which includes a first sub-skeleton and a second sub-skeleton provided separately, and the first sub-skeleton and the second sub-skeleton are butted and sleeved outside the tooth portion;
  • a plurality of coils each of which is wound around each of the skeletons.
  • the tooth portion is provided with a limited position hole
  • the first skeleton includes a first body and a first stopper protruding from the first body
  • the second skeleton includes a second body And a second limiter protruding from the second body, the first body and the second body are butted and sleeved outside the tooth portion, and the first limiter and the second limiter
  • the position pieces are respectively limited to two ends of the position limiting hole.
  • the collar is thermally fixed outside the stator core.
  • an end surface of the collar is flush with an end surface of the stator core.
  • a motor includes a rotor and the stator according to any one of the foregoing, and the rotor is rotatably disposed in the stator.
  • stator and the motor provided in the present application, because a plurality of iron core units are spliced into a ring-shaped stator iron core through a splicing structure, and are sleeved outside the stator core through a collar and fixed to the plurality of iron core units, thus avoiding directly connecting Multiple stator cores are welded and fixed, the stator core will not be deformed due to uneven heating during welding, so the roundness of the inner circle of the stator core is better; and the end faces of the stator core will not rebound, and the stator The perpendicularity between the end surface of the core and the inner circle is good, so that it will not cause the installation of the stator core in the later stage to be tilted, and the deformation of the stator core is also avoided.
  • FIG. 1 is a perspective view of a stator provided by an embodiment of the present application
  • FIG. 2 is a front view of the stator provided in FIG. 1;
  • FIG. 3 is a structural diagram of a core unit of a stator provided in FIG. 1;
  • FIG. 4 is a structural diagram of some components of the stator provided in FIG. 1;
  • FIG. 5 is a front view of some components provided in FIG. 4;
  • FIG. 6 is a cross-sectional view of some components provided in FIG. 4.
  • an embodiment of the present application provides a stator 10 including a ring-shaped stator core 11, a collar 12, a plurality of skeletons 13, and a plurality of coils 14.
  • the stator core 11 includes a plurality of divided core units 111. Each adjacent two core units 111 form a splicing structure 15 with each other. The plurality of core units 111 are spliced to form the above-mentioned annular stator iron by the splicing structure 15. The core 11 and the collar 12 are sleeved outside the stator core 11 and are fixedly connected to the plurality of core units 111.
  • the plurality of core units 111 are spliced into a ring-shaped stator core 11 through the splicing structure 15 and are sleeved outside the stator core 11 through the collar 12 and fixed to the plurality of core units 111, this avoids directly
  • the stator core 11 is fixed by welding, so the stator core 11 will not be deformed due to uneven heating during welding, so the roundness of the inner circle of the stator core 11 is better; and the end surface of the stator core 11 will not rebound.
  • the perpendicularity between the end surface of the stator core 11 and the inner circle is good, so that it will not cause the installation of the stator core 11 to be inclined in the later stage, and the deformation of the stator core 11 is also avoided.
  • the core unit 111 includes a yoke portion 112 and a tooth portion 113 connected to each other.
  • the yoke portions 112 of two adjacent core units 111 form the above-mentioned splicing structure 15 with each other.
  • the portions 112 are spliced to form the outer circle of the stator core 11, and the tooth portions 113 of the plurality of core units 111 are spaced from each other and form the inner circle of the stator core 11.
  • the yoke portion 112 has an outer peripheral surface for forming an outer circle of the stator core 11 and an inner peripheral surface facing away from the outer peripheral surface.
  • One end of the tooth portion 113 is connected to an intermediate position of the inner peripheral surface of the yoke portion 112.
  • the tooth portion 113 The other end forms an inner peripheral surface for forming an inner circle of the stator core 11.
  • the splicing structure 15 includes a convex portion 151 and a concave portion 152.
  • the convex portion 151 is provided on the yoke portion 112 of each of the two adjacent core units 111, and the concave portion 152 is provided on the other of the two adjacent core units 111.
  • Each iron core unit 111 is located between two iron core units 111 adjacent to each other along two circumferentially-arranged splicing structures 151, and the convex portions 151 on the plurality of iron core units 111 are along the same
  • the circumferential direction of is set on the same circumference.
  • a convex portion 151 and a concave portion 152 are respectively provided at two ends of each core unit 111 in the circumferential direction, and the convex portion 151 provided on the core unit 111 is a part of one of the splicing structures 15 and is provided on the The recessed portion 152 of the core unit 111 is a part of the other splicing structure 15.
  • a convex portion 151 may be provided at each end of one of the two adjacent two core units 111 along the circumferential direction, and at this time, the other of the two adjacent two core units 111
  • a concave portion 152 is provided at each of two ends in the circumferential direction, and the spaced-apart arrangement can also achieve the splicing and fixing of each adjacent two core units 111.
  • the convex portion 151 extends at one end of the yoke portion 112 along the circumferential direction of the yoke portion 112 and the outer peripheral surface of the yoke portion 112 smoothly transitions to the outer peripheral surface of the convex portion 151.
  • the concave portion 152 is opened at The open groove on the outer peripheral surface of the other end of the yoke portion 112 facilitates the design of the convex portion 151 and the concave portion 152.
  • the convex portion 151 may be connected to another position of one end of the yoke portion 112 along the circumferential direction of the yoke portion 112, such as the middle portion of one end of the yoke portion 112, so that the concave portion 152 corresponds to It is opened in the middle of the other end of the yoke portion 112.
  • the number of the skeletons 13 is equal to the number of the core units 111. Each skeleton 13 is set outside the teeth 113 of each of the core units 111.
  • the number of coils 14 is equal to the number of the skeletons 13. Each coil 14 is sleeved outside each skeleton 13.
  • the number of the iron core units 111 is set to 16. At this time, an included angle A formed by a connection line between the two ends of the yoke portion 112 in the circumferential direction and the circle center of the stator iron core 11 is 22.5 °. The number of the skeletons 13 and the coils 14 is correspondingly sixteen.
  • the number of the iron core units 111 may be selected to be another number, and accordingly, the number of the skeletons 13 and the coils 14 may be set equal to the number of the iron core units 111, which is not limited herein.
  • the skeleton 13 includes a first sub-skeleton 131 and a second sub-skeleton 132.
  • the first sub-skeleton 131 and the second sub-skeleton 132 are butted and sleeved outside the teeth 113, and the coil 14 is wound around the first sub-skeleton 131 and The second sub-framework 132 is externally fixed.
  • the tooth portion 113 is provided with a limited position hole 1131.
  • the first sub-skeleton 131 includes a first body 1311 and a first protrusion protruding from the first body 1311.
  • the limiting member 1312, the second sub-skeleton 132 includes a second body 1321 and a second limiting member 1322 protruding from the second body 1321, the first body 1311 and the second body 1321 are buttedly sleeved outside the tooth portion 113, and
  • the first limiting member 1312 and the second limiting member 1322 are respectively disposed at two ends of the limiting hole 1131.
  • the collar 12 is thermally sleeved outside the stator core 11, that is, when a plurality of core units 111 are spliced into a ring-shaped stator core 11, at this time, the stator core 11 is not limited due to the absence of the collar 12.
  • the outer circle size is generally larger than the required value by 0.1mm-0.2mm. After the collar 12 is heated to an appropriate temperature, it is sleeved outside the stator core 11. When the collar 12 is naturally cooled, a plurality of core units 111 are fixed. The outer circle of the stator core 11 reaches a required value.
  • the end surface of the ferrule 12 is flush with the end surface of the stator core 11, so that the end surface of the ferrule 12 and the end surface of the stator core 11 can be used as mounting surfaces together.
  • the specific assembly process of the stator 10 provided in this embodiment is as follows:
  • the first body 1311 of the first sub-framework 131 and the second body 1321 of the second sub-framework 132 are butted and sleeved outside the tooth 113 of the iron core unit 111, and the first stopper 1312 of the first sub-framework 131
  • the second limiting members 1322 and the second sub-framework 132 are respectively limited to two ends of the limiting hole 1131;
  • the coil 14 is wound around the first body 1311 and the second body 1321.
  • the collar 12 is heated to a certain temperature, and the collar 12 is sleeved outside the stator core 11. After the collar 12 is naturally cooled, it is fixedly connected to a plurality of core units 111.
  • An embodiment of the present application further provides a motor including a rotor and the stator 10 described above.
  • the stator 10 and the motor provided in the embodiment of the present application, because a plurality of iron core units 111 are spliced into a ring-shaped stator iron core 11 through a splicing structure 15, and are sleeved outside the stator iron core 11 and are connected with a plurality of iron cores through a collar 12.
  • the unit 111 is fixed, so that multiple stator cores 11 are directly welded and fixed, the stator core 11 will not be deformed due to uneven heating during welding, and the roundness of the inner circle of the stator core 11 is better;
  • the end surface of the stator core 11 will not rebound, and the end surface of the stator core 11 and the inner circle have a good perpendicularity. This will not cause the installation of the stator core 11 in the later period, and the stator core 11 will also be prevented from deforming.

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

Abstract

本申请涉及一种定子及电机，包括：多个分体设置的铁芯单元，每相邻两个所述铁芯单元相互之间形成拼接结构，所述多个铁芯单元通过所述拼接结构拼接形成环形的定子铁芯；套环，套设于所述定子铁芯外并与多个所述铁芯单元固定连接。本申请提供的定子及电机，由于多个铁芯单元通过拼接结构拼接为环形的定子铁芯，并通过套环套设于定子铁芯外并与多个铁芯单元固定，如此避免了直接将多个定子铁芯焊接固定，则定子铁芯不会焊接受热不均产生变形，从而定子铁芯的内圆的圆度较好；且定子铁芯的端面也不会发生反弹，定子铁芯的端面与内圆的垂直度较好，如此不会导致后期定子铁芯的安装倾斜，则也避免了定子铁芯变形。

Description

定子及电机
相关申请
本申请要求2018年08月13日申请的，申请号为201810913606.2，名称为“定子及电机”的中国专利申请的优先权，在此将其全文引入作为参考。
技术领域
本申请涉及驱动装置技术领域，特别是涉及一种定子及电机。
背景技术
电机主要包括定子与转子，工作时，定子产生旋转磁场，转子在旋转磁场中被磁力线切割而产生电流。
传统采用的定子主要包括两种结构：
1、拼链结构，多个铁芯单元成链条状连接，当将多个铁芯单元拼接为整圈的定子铁芯后，多个铁芯单元之间焊接固定，采用焊接的方式会导致铁芯单元受热不均，因此铁芯单元容易变形，从而导致整个定子铁芯的内圆圆度不好的情况发生；
2、冲片结构，包括整圈设置的多个铁芯片及两个端板，在组装时，多个铁芯片相互叠合在一起，且叠合后的整体夹持于两个端板之间，而后通过油压机压紧后并沿周向通过多个焊接点将端板与多个铁芯片焊接固定，焊接后由于油压机会被撤走，如此铁芯片的叠合高度会发生反弹，靠近焊接点的位置反弹较小，远离焊接点的位置反弹较大，从而造成整个定子端面与内圆的垂直度不好，由于该定子端面为安装面，如果定子端面与内圆的垂直度不好，则会导致定子安装倾斜，造成定子变形。
发明内容
基于此，有必要针对传统定子内圆圆度不好及定子端面与内圆的垂直度不好的问题，提供一种内圆圆度较好及定子端面与内圆的垂直度较好的定子及电机。
一种定子，包括：
多个分体设置的铁芯单元，每相邻两个所述铁芯单元相互之间形成拼接结构，所述多个铁芯单元通过所述拼接结构拼接形成环形的定子铁芯；
套环，套设于所述定子铁芯外并与所述定子铁芯固定连接。
在其中一个实施例中，所述拼接结构包括凸部与凹部，所述凸部设置于每相邻两个所述铁芯单元中一者，所述凹部设置于每相邻两个所述铁芯单元中另一者。
在其中一个实施例中，每个所述铁芯单元通过位于自身两侧的两个所述拼接结构沿周向限位于相邻两侧的两个所述铁芯单元之间，且所述多个铁芯单元上所述凸部沿相同的圆周方向设置于同一圆周上。
在其中一个实施例中，每个所述铁芯单元包括相互连接的轭部与齿部，所述凸部设置于每相邻两个所述铁芯单元中一者的所述轭部，所述凹部设置于每相邻两个所述铁芯单元中另一者的所述轭部，所述多个铁芯单元的所述轭部拼接形成所述定子铁芯的外圆，所述多个铁芯单元的所述齿部相互间隔设置并形成所述定子铁芯的内圆。
在其中一个实施例中，所述凸部沿所述轭部的周向延伸于所述轭部的一端且所述轭部的外周面光滑过渡于所述凸部的外周面，所述凹部为开设于所述轭部的另一端的外周面的开口槽。
在其中一个实施例中，还包括：
多个骨架，每个所述骨架包括分体设置的第一子骨架与第二子骨架，所述第一子骨架与所述第二子骨架对接套设于所述齿部外；
多个线圈，每个所述线圈缠绕于每个所述骨架外。
在其中一个实施例中，所述齿部开设有限位孔，所述第一骨架包括第一本体及凸设于所述第一本体的第一限位件，所述第二骨架包括第二本体及凸设于所述第二本体的第二限位件，所述第一本体与所述第二本体对接套设于所述齿部外，所述第一限位件与所述第二限位件分别限位于所述限位孔的两端。
在其中一个实施例中，所述套环热套于所述定子铁芯外固定。
在其中一个实施例中，所述套环的端面与所述定子铁芯的端面平齐。
一种电机，包括转子及如上述任一项所述的定子，所述转子可转动地设置于所述定子内。
本申请提供的定子及电机，由于多个铁芯单元通过拼接结构拼接为环形的定子铁芯，并通过套环套设于定子铁芯外并与多个铁芯单元固定，如此避免了直接将多个定子铁芯焊接固定，则定子铁芯不会因焊接过程中受热不均产生变形，从而定子铁芯的内圆的圆度较好；且定子铁芯的端面也不会发生反弹，定子铁芯的端面与内圆的垂直度较好，如此不会导致后期定子铁芯的安装倾斜，则也避免了定子铁芯变形。
附图说明
图1为本申请一实施例提供的定子的轴测图；
图2为图1中所提供的定子的正视图；
图3为图1中所提供的定子的铁芯单元的结构图；
图4为图1中所提供的定子的部分部件的结构图；
图5为图4中所提供的部分部件的正视图；
图6为图4中所提供的部分部件的剖视图。
具体实施方式
为了便于理解本申请，下面将参照相关附图对本申请进行更全面的描述。附图中给出了本申请的较佳实施例。但是，本申请可以以许多不同的形式来实现，并不限于本文所描述的实施例。相反地，提供这些实施例的目的是使对本申请的公开内容的理解更加透彻全面。
需要说明的是，当元件被称为“固定于”另一个元件，它可以直接在另一个元件上或者也可以存在居中的元件。当一个元件被认为是“连接”另一个元件，它可以是直接连接到另一个元件或者可能同时存在居中元件。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申请的技术领域的技术人员通常理解的含义相同。本文中在本申请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，不是旨在于限制本申请。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。
参阅图1及图2，本申请一实施例提供一种定子10，包括环形的定子铁芯11、套环12、多个骨架13及多个线圈14。
定子铁芯11包括多个分体设置的铁芯单元111，每相邻两个铁芯单元111相互之间形成拼接结构15，多个铁芯单元111通过拼接结构15拼接形成上述环形的定子铁芯11，套环12套设于定子铁芯11外并与多个铁芯单元111固定连接。
由于多个铁芯单元111通过拼接结构15拼接为环形的定子铁芯11，并通过套环12套设于定子铁芯11外并与多个铁芯单元111固定，如此避免了直接将多个定子铁芯11焊接固定，则定子铁芯11不会因焊接过程中受热不均产生变形，从而定子铁芯11的内圆的圆度较好；且定子铁芯11的端面也不会发生反弹，定子铁芯11的端面与内圆的垂直度较好，如此不会导致后期定子铁芯11的安装倾斜，则也避免了定子铁芯11变形。
参阅图3，铁芯单元111包括相互连接的轭部112与齿部113，每相邻两个铁芯单元 111的轭部112相互之间形成上述拼接结构15，多个铁芯单元111的轭部112拼接形成定子铁芯11的外圆，多个铁芯单元111的齿部113相互间隔设置并形成定子铁芯11的内圆。具体地，轭部112具有用于形成定子铁芯11的外圆的外周面以及背离外周面的内周面，齿部113的一端连接于轭部112的内周面的中间位置，齿部113的另一端形成用于形成定子铁芯11的内圆的内周面。
拼接结构15包括凸部151与凹部152，凸部151设置于每相邻两个铁芯单元111中一者的轭部112，凹部152设置于每相邻两个铁芯单元111中另一者的轭部112。每个铁芯单元111通过位于自身两侧的两个拼接结构151沿周向限位于相邻两侧的两个铁芯单元111之间，且多个铁芯单元111上的凸部151沿相同的圆周方向设置于同一圆周上。
具体地，每个铁芯单元111沿周向的两端分别设置有一个凸部151与一个凹部152，设置于该铁芯单元111的凸部151为其中一个拼接结构15的一部分，设置于该铁芯单元111的凹部152为其中另一个拼接结构15的一部分。
在其他实施例中，也可以设置每相邻两个铁芯单元111中一者沿周向的两端分别设置有一个凸部151，此时每相邻两个铁芯单元111中另一者沿周向的两端分别设置有一个凹部152，如此间隔设置，也可以实现每相邻两个铁芯单元111的拼接固定。
继续参阅图3，在本实施例中，凸部151沿轭部112的周向延伸于轭部112的一端且轭部112的外周面光滑过渡于凸部151的外周面，凹部152为开设于轭部112的另一端的外周面的开口槽，如此便于凸部151与凹部152的设计。
可以理解的是，在其他实施例中，凸部151可以沿轭部112的周向连接于轭部112的一端的其他位置，如连接于轭部112的一端的中部，如此凹部152相对应地开设于轭部112另一端的中部。
参阅图4及图5，骨架13的数量与铁芯单元111的数量相等，每个骨架13套设于每个铁芯单元111的齿部113外，线圈14的数量与骨架13的数量相等，每个线圈14套设于每个骨架13外。
具体地，铁芯单元111的数量设置为16个，此时轭部112沿周向的两端与定子铁芯11的圆心之间的连线所形成的夹角A为22.5°。则骨架13与线圈14的数量也相应地为16个。
在其他实施例中，铁芯单元111的数量可以选择为其他数量，相应地骨架13与线圈14的数量设定与铁芯单元111的数量相等即可，在此不作限定。
参阅图6，骨架13包括第一子骨架131与第二子骨架132，第一子骨架131与第二子骨架132对接套设于齿部113外，而后线圈14缠绕于第一子骨架131与第二子骨架132 外固定。
具体地，为了便于第一子骨架131与第二子骨架132的限位，齿部113设置有限位孔1131，第一子骨架131包括第一本体1311与凸设于第一本体1311的第一限位件1312，第二子骨架132包括第二本体1321与凸设于第二本体1321的第二限位件1322，第一本体1311与第二本体1321对接套设于齿部113外，且第一限位件1312与第二限位件1322分别穿设于限位孔1131的两端。
在本实施例中，套环12热套于定子铁芯11外，即当多个铁芯单元111拼接为环形的定子铁芯11后，此时由于没有套环12的限位定子铁芯11的外圆尺寸较要求值一般大0.1mm-0.2mm，套环12加热至适当温度后套设于定子铁芯11外，当套环12自然冷却后将多个铁芯单元111固定，此时定子铁芯11的外圆达到要求值。
在本实施例中，套环12的端面与定子铁芯11的端面平齐，如此套环12的端面与定子铁芯11的端面可以一同作为安装面。
本实施例中提供的定子10的具体组装过程如下：
1、第一子骨架131的第一本体1311与第二子骨架132的第二本体1321对接套设于铁芯单元111的齿部113外，且第一子骨架131的第一限位件1312与第二子骨架132的第二限位件1322分别限位于限定孔1131的两端；
2、线圈14缠绕于第一本体1311与第二本体1321外；
3、利用工装将多个铁芯单元111通过拼接机构拼接成环形定子铁芯11，此时定子铁芯11的外圆尺寸较要求值一般大0.1mm-0.2mm；
4、将套环12加热至一定的温度，并将套环12套设于定子铁芯11外，套环12自然冷却后与多个铁芯单元111固定连接。
本申请一实施例还提供一种电机，包括转子及上述的定子10。
本申请实施例提供的定子10及电机，由于多个铁芯单元111通过拼接结构15拼接为环形的定子铁芯11，并通过套环12套设于定子铁芯11外并与多个铁芯单元111固定，如此避免了直接将多个定子铁芯11焊接固定，则定子铁芯11不会因焊接过程中受热不均产生变形，从而定子铁芯11的内圆的圆度较好；且定子铁芯11的端面也不会发生反弹，定子铁芯11的端面与内圆的垂直度较好，如此不会导致后期定子铁芯11的安装倾斜，则也避免了定子铁芯11变形。
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。
以上所述实施例仅表达了本申请的几种实施方式，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，在不脱离本申请构思的前提下，还可以做出若干变形和改进，这些都属于本申请的保护范围。因此，本申请专利的保护范围应以所附权利要求为准。

Claims (10)

  1. 一种定子(10)，其特征在于，包括：
    多个分体设置的铁芯单元(111)，每相邻两个所述铁芯单元(111)相互之间形成拼接结构(15)，所述多个铁芯单元(111)通过所述拼接结构(15)拼接形成环形的定子铁芯(11)；
    套环(12)，套设于所述定子铁芯(11)外并与所述定子铁芯(11)固定连接。
  2. 根据权利要求1所述的定子(10)，其特征在于，所述拼接结构(15)包括凸部(151)与凹部(152)，所述凸部(151)设置于每相邻两个所述铁芯单元(111)中一者，所述凹部(152)设置于每相邻两个所述铁芯单元(111)中另一者。
  3. 根据权利要求2所述的定子(10)，其特征在于，每个所述铁芯单元(111)通过位于自身两侧的两个所述拼接结构(151)沿周向限位于相邻两侧的两个所述铁芯单元(111)之间，且所述多个铁芯单元(111)上所述凸部(151)沿相同的圆周方向设置于同一圆周上。
  4. 根据权利要求2所述的定子(10)，其特征在于，每个所述铁芯单元(111)包括相互连接的轭部(112)与齿部(113)，所述凸部(151)设置于每相邻两个所述铁芯单元(111)中一者的所述轭部(112)，所述凹部(152)设置于每相邻两个所述铁芯单元(111)中另一者的所述轭部(112)，所述多个铁芯单元(111)的所述轭部(112)拼接形成所述定子铁芯(11)的外圆，所述多个铁芯单元(111)的所述齿部(113)相互间隔设置并形成所述定子铁芯(11)的内圆。
  5. 根据权利要求4所述的定子(10)，其特征在于，所述凸部(151)沿所述轭部(112)的周向延伸于所述轭部(112)的一端且所述轭部(112)的外周面光滑过渡于所述凸部(151)的外周面，所述凹部(152)为开设于所述轭部(112)的另一端的外周面的开口槽。
  6. 根据权利要求4所述的定子(10)，其特征在于，还包括：
    多个骨架(13)，每个所述骨架(13)包括分体设置的第一子骨架(131)与第二子骨架(132)，所述第一子骨架(131)与所述第二子骨架(132)对接套设于所述齿部(113)外；
    多个线圈(14)，每个所述线圈(14)缠绕于每个所述骨架(13)外。
  7. 根据权利要求6所述的定子(10)，其特征在于，所述齿部(113)开设有限位孔(1131)，所述第一子骨架(131)包括第一本体(1311)及凸设于所述第一本体(1311)的第一限位 件(1312)，所述第二子骨架(132)包括第二本体(1321)及凸设于所述第二本体(1321)的第二限位件(1322)，所述第一本体(1311)与所述第二本体(1321)对接套设于所述齿部(113)外，所述第一限位件(1312)与所述第二限位件(1322)分别限位于所述限位孔(1131)的两端。
  8. 根据权利要求1-7任一项所述的定子(10)，其特征在于，所述套环(12)热套于所述定子铁芯(11)外固定。
  9. 根据权利要求1-7任一项所述的定子(10)，其特征在于，所述套环(12)的端面与所述定子铁芯(11)的端面平齐。
  10. 一种电机，其特征在于，包括转子及如权利要求1-9任一项所述的定子(10)，所述转子可转动地设置于所述定子(10)内。
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