WO2019114251A1 - 电机定子和具有其的电机 - Google Patents

电机定子和具有其的电机 Download PDF

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Publication number
WO2019114251A1
WO2019114251A1 PCT/CN2018/093169 CN2018093169W WO2019114251A1 WO 2019114251 A1 WO2019114251 A1 WO 2019114251A1 CN 2018093169 W CN2018093169 W CN 2018093169W WO 2019114251 A1 WO2019114251 A1 WO 2019114251A1
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WO
WIPO (PCT)
Prior art keywords
stator
motor
sub
cores
adjacent
Prior art date
Application number
PCT/CN2018/093169
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English (en)
French (fr)
Inventor
武谷雨
吴迪
陈金涛
Original Assignee
广东威灵电机制造有限公司
美的威灵电机技术（上海）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
Priority claimed from CN201711311423.5A external-priority patent/CN107994692B/zh
Priority claimed from CN201721730396.0U external-priority patent/CN207518365U/zh
Application filed by 广东威灵电机制造有限公司, 美的威灵电机技术（上海）有限公司 filed Critical 广东威灵电机制造有限公司
Publication of WO2019114251A1 publication Critical patent/WO2019114251A1/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
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof

Definitions

  • the present application relates to the field of motor manufacturing technology, and in particular to a motor stator and a motor therewith.
  • the stator core of the motor mostly adopts an integral structure, which makes it inconvenient to wind on the stator yoke portion, resulting in inconvenient machining of the motor stator and low processing efficiency.
  • the stator yoke, the stator tooth portion and the stator winding are respectively modularized in the production of the motor stator, and these modules are assembled into a complete motor stator.
  • the assembling operation between the plurality of modules of the stator yoke is difficult, and usually needs to be completed by other tools, thereby limiting the production efficiency of the motor stator.
  • the stator core of the block is prone to axial misalignment and the like.
  • the present application is intended to address at least one of the technical problems existing in the prior art. To this end, the present application proposes a motor stator that is easy to manufacture, assembly, and has high production efficiency, and is easy to ensure axial positioning between adjacent sub-stator cores.
  • the present application also proposes a motor having the above-described motor stator.
  • a motor stator comprising: a stator core including a plurality of sub-stator cores sequentially connected in a circumferential direction, each of the sub-stator cores including a stator yoke, at least a stator tooth portion and two connecting outer end portions, wherein the two outer connecting end portions are respectively disposed outside the stator yoke portion and respectively located at circumferential ends of the stator yoke portion, and the stator tooth portion is provided a groove is formed on an inner side of the stator yoke portion and in a circumferential direction of the stator yoke portion between the two outer connecting end portions, and each of the connecting outer end portions is formed with a groove Two of the grooves connecting the outer ends of the sub-stator cores form a mounting hole, and the mounting holes are fitted with connecting members to realize the connection of two adjacent sub-stator cores And mounting positioning; stator windings, the stator windings being wound on the
  • the stator core is disposed to include a plurality of sub-stator cores sequentially connected in the circumferential direction, and each of the sub-stator cores includes a stator yoke portion, at least one stator tooth portion, and two connections
  • the end portion at the same time, the two connecting outer end portions are respectively disposed outside the stator yoke portion and respectively located at circumferential ends of the stator yoke portion, and each of the connecting outer end portions is formed with a groove, and the adjacent two sub-stator cores are
  • the two grooves connecting the two outer ends of the connection form a mounting hole
  • the connecting member is disposed in the mounting hole to press the adjacent two sub-stator cores in the same plane, thereby ensuring the adjacent two sub-children
  • the axial positioning of the stator core at the same time, because the structure of each sub-stator core is short, the punching of the sub-stator core is facilitated, and the amount of
  • an outer surface of two of the connecting outer ends of the contact of two adjacent sub-stator cores is formed to be first protruding toward a center direction away from the stator yoke Convex.
  • each of the sub-stator cores includes a plurality of the stator teeth, and in the circumferential direction of the stator yoke, a plurality of the stator teeth are located outside the two joints Between the ends.
  • each of the sub-stator cores further includes: at least one outer end portion disposed outside the stator yoke portion and located in a circumferential direction of the stator yoke portion Between two adjacent stator tooth portions, an outer surface of the outer end portion is formed to face a second convex surface that protrudes away from a center direction of the stator yoke portion.
  • connection and mounting positioning are achieved between the two adjacent sub-stator cores through a connecting member.
  • two of the joined outer ends of the contacts of two adjacent sub-stator cores are bonded or welded.
  • the stator windings are at least two, and each of the stator windings is wound on the stator yoke in a single or multiple winding manner, and the stator windings are connected by a star. Shape or triangle.
  • each of the sub-stator cores is formed by stacking a plurality of punches.
  • the motor according to the embodiment of the second aspect of the present invention includes: a casing having a plurality of recesses formed on an inner wall thereof; a motor stator, wherein the motor stator is a motor stator according to the first aspect embodiment of the present application, The motor stator is disposed in the casing, and outer surfaces of two of the connecting outer ends of the two adjacent sub-stator cores are formed to protrude toward a center away from the stator yoke a convex surface that fits within the recess; a motor rotor that is disposed inside the stator of the motor.
  • the assembly of the motor is facilitated, the production efficiency of the motor is improved, axial misalignment is avoided, and the performance of the motor is ensured.
  • FIG. 1 is a cross-sectional view of a motor in accordance with an embodiment of the present application.
  • FIG 2 is a schematic view of the stator core shown in Figure 1;
  • Figure 3 is a schematic view of the sub-stator core shown in Figure 1;
  • Figure 4 is a schematic view of the casing shown in Figure 1;
  • Figure 5 is a cross-sectional view of a motor in accordance with another embodiment of the present application.
  • FIG. 6 is a schematic view of the stator core shown in Figure 5;
  • Figure 7 is a schematic view of the sub-stator core shown in Figure 5;
  • Figure 8 is a schematic view of the casing shown in Figure 5;
  • Figure 9 is a cross-sectional view of a motor in accordance with still another embodiment of the present application.
  • Motor 200 motor stator 100, housing 101, recess 101a, motor rotor 102,
  • Stator core 1 sub-stator core 11, stator yoke 111, stator tooth portion 112, stopper portion 112a,
  • connection In the description of the present application, it should be noted that the terms “installation”, “connected”, and “connected” are to be understood broadly, and may be fixed or detachable, for example, unless otherwise specifically defined and defined. Connected, or integrally connected; can be mechanical or electrical; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of the two components.
  • Connected, or integrally connected can be mechanical or electrical; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of the two components.
  • the specific meanings of the above terms in the present application can be understood in the specific circumstances for those skilled in the art.
  • a motor stator 100 according to an embodiment of the present application will be described below with reference to FIGS.
  • a motor stator 100 includes a stator core 1 and a stator winding 2.
  • the stator core 1 includes a plurality of sub-stator cores 11 sequentially connected in the circumferential direction, each of the sub-stator cores 11 including a stator yoke portion 111, at least one stator tooth portion 112, and two connecting outer end portions 113, two connecting outer ends
  • the portions 113 are both disposed outside the stator yoke portion 111 and the two connecting outer end portions 113 are respectively located at the circumferential ends of the stator yoke portion 111, and the stator tooth portions 112 are provided inside the stator yoke portion 111 and at the stator yoke portion 111
  • the circumferential direction is located between the two connecting outer end portions 113, each of the connecting outer end portions 113 is formed with a recess 113a, and the two adjacent sub-stator cores 11 are in contact with the two connecting outer end portions 113.
  • the 113a constitutes a mounting hole 113b into which the connecting member 113b is fitted to realize the connection and
  • the stator yoke portion 111 may be formed substantially in an arc shape, and the groove 113a may be formed as a semi-circular groove.
  • the mounting hole 113b is a circular hole, but is not limited thereto.
  • the direction “inner” means a direction close to the central axis of the stator core 1, and the opposite direction is defined as “outer”.
  • the structures of the plurality of sub-stator cores 11 of the stator core 1 may be the same or different.
  • the stator core 1 includes two sub-stator cores 11 connected in series in the circumferential direction, this is
  • the central angles of the stator yokes 111 of the two sub-stator cores 11 may each be 180°, or the central angles of the stator yokes 111 of the two sub-stator cores 11 may be 120° and 240°, respectively; for example,
  • the stator core 1 includes three sub-stator cores 11 which are sequentially connected end to end in the circumferential direction thereof, and the stator yoke portions 111 of the three sub-stator cores 11 have a central angle of 120°.
  • the stator core 1 is disposed to include a plurality of sub-stator cores 11 sequentially connected in the circumferential direction, and each of the sub-stator cores 11 includes a stator yoke portion 111 and at least one stator tooth portion 112 and two connecting outer end portions 113, while the two connecting outer end portions 113 are respectively disposed outside the stator yoke portion 111 and respectively located at circumferential ends of the stator yoke portion 111, and each connecting outer end portion 113 is formed with
  • the recess 113a, the two recesses 113a connecting the outer end portions 113 of the adjacent two sub-stator cores 11 form a mounting hole 113b, and the connecting member is bored in the mounting hole 113b to connect the adjacent two sub-stators
  • the iron cores 11 are pressed in the same plane, thereby ensuring the axial positioning of the adjacent two sub-stator cores 11; and at the same time, since the
  • the length of the stator tooth portion 112 may be equal to or different from the length of the connecting outer end portion 113.
  • the length of the stator toothing 112 is greater than the length of the connecting outer end 113.
  • length means a length in the radial direction of the stator yoke portion 111.
  • the outer surfaces of the two connecting outer end portions 113 contacting the two adjacent sub-stator cores 11 are formed to face the first convex surface 113c protruding away from the center direction of the stator yoke portion 111,
  • the two first convex surfaces 113c of the two connected outer end portions 113 that are in contact with each other are configured to face a convex surface that protrudes away from the center direction of the stator yoke portion 111, and the machine of the motor 200
  • the inner wall of the shell 101 is formed with a plurality of concave portions 101a adapted to the convex surface, and the convex surfaces are correspondingly fitted in the concave portions 101a, so that the concave portions 101a can fasten the adjacent sub-stator cores 11 together, thereby ensuring adjacent members.
  • the first convex surface 113c is formed as a curved surface.
  • the first convex surface 113c is formed as a circular arc surface, and when the two adjacent sub-stator cores 11 are aligned, the two first curved surfaces of the two outer end portions 113 that are in contact are connected. It can be configured as a semi-circular surface, which is simple in structure and easy to implement.
  • the concave portion 101a on the inner wall of the casing 101 of the motor 200 may also be formed substantially as a dovetail groove, and the convex surfaces of the two first convex surfaces 113c connecting the two outer stator ends 113 adjacent to the two sub-stator cores 11 at this time are formed.
  • the close fitting of the adjacent sub-stator cores 11 can be achieved, and the tightness of the splicing of the adjacent sub-stator cores 11 can be ensured. But it is not limited to this.
  • the mounting hole 113b is a light hole or a screw hole
  • the connecting member cooperates with the mounting hole 113b, thereby facilitating the stator core under the premise of ensuring axial positioning between the adjacent child stator cores 11. 1 installation.
  • the connecting member can be selected as a threaded fastener such as a screw.
  • each sub-stator core 11 includes a plurality of stator teeth 112, and in the circumferential direction of the stator yoke 111, a plurality of stator teeth 112 are located between the two connecting outer ends 113.
  • each sub-stator core 11 includes three stator teeth 112 between the two connecting outer ends 113 along the stator yoke 111 The circumferential directions are evenly spaced.
  • each of the sub-stator cores 11 may include only one stator tooth portion 112 that is spaced apart from the two connection outer ends 113, respectively.
  • each of the sub-stator cores 11 further includes at least one outer end portion 114 which is provided outside the stator yoke portion 111 and located between the adjacent two stator tooth portions 112 in the circumferential direction of the stator yoke portion 111.
  • each sub-stator core 11 includes a stator yoke portion 111, three stator tooth portions 112, two connecting outer end portions 113, and two outer end portions 114, both of which have outer end portions 114
  • the outer side of the stator yoke portion 111 is disposed between the adjacent two stator tooth portions 112 in the circumferential direction of the stator yoke portion 111.
  • each of the outer end portions 114 may be formed with a positioning mounting hole 114a, and a fastener is disposed in the positioning mounting hole 114a to fasten each sub-stator core 11 to the casing 101 of the motor 200, thereby avoiding the motor.
  • the sub-stator iron core 11 is separated from the casing 101 of the motor 200, and the connection between each of the sub-stator iron cores 11 and the casing 101 of the motor 200 is ensured to be reliable.
  • the outer surface of the outer end portion 114 is formed to face a second convex surface that protrudes away from the center direction of the stator yoke portion 111, and the second convex surface can be fitted with the concave portion 101a in the casing 101.
  • the adjacent two sub-stator cores 11 are connected by a connecting member. That is, when the sub-stator iron core 11 includes the stator yoke portion 111, one stator tooth portion 112, and two splice outer end portions 115, the stator winding 2 is wound on the stator tooth portion 112; when the sub-stator iron core 11 includes When the stator yoke portion 111, the plurality of stator tooth portions 112, and the two splicing outer end portions 115 are wound, the stator windings 2 are wound around each of the stator tooth portions 112. Thereby, the winding of the stator core 1 is facilitated, and the machining efficiency of the motor stator 100 is improved.
  • one end of the stator tooth portion 112 adjacent to the center of the stator yoke portion 111 is provided with a toothed shoe portion 112a which is oriented from the circumferential direction of the stator tooth portion 112 in the circumferential direction of the stator yoke portion 111. Both sides extend out, whereby the cross-sectional area of the toothed portion 112a is large, so that the stator winding 2 on the stator tooth portion 112 can be limited.
  • the end of the stator tooth portion 112 adjacent to the center of the stator yoke portion 111 may not be provided with the toothed shoe portion 112a.
  • width means a width along the circumferential direction of the stator yoke portion 111.
  • the two splice outer ends 114 of the contact of two adjacent sub-stator cores 11 are bonded or welded to further ensure the connection between the adjacent two sub-stator cores 11.
  • the strength, the stability of the relative positions of the adjacent two sub-stator cores 11 are ensured, and the axial positioning between the adjacent sub-stator cores 11 is further ensured, while the contact between the adjacent two sub-stator cores 11 is avoided.
  • the bonding or welding between the two sub-stator teeth 112 affects the magnetic field of the motor stator 100, ensuring the reliability of the use of the motor stator 100.
  • stator windings 2 there are at least two stator windings 2, each of which is wound on the stator yoke 111 in a single or multiple wire wound manner.
  • the winding directions of the plurality of stator windings 2 may be the same or opposite.
  • the winding direction of each of the stator windings 2 may be positive or reverse.
  • the stator windings 2 may be connected in series or in parallel so that the stator windings 2 may be connected in a star shape (or Y-shape), a triangle, or the like.
  • the winding manner, winding direction and connection manner of the stator winding 2 are generally known to those skilled in the art and are not specifically limited herein.
  • each of the sub-stator cores 11 is formed by stacking a plurality of punching sheets, thereby facilitating the processing of the sub-stator cores 11, thereby facilitating the processing of the stator core.
  • An electric machine 200 includes a casing 101 and a motor stator 100, which is a motor stator 100 according to the above-described first aspect embodiment of the present application.
  • the motor 200 can be a single-phase motor, a three-phase motor or a multi-phase motor, etc.
  • the motor 200 can be applied to household appliances, medical equipment, power generation and energy storage equipment, chemical detection and material wind equipment, and unmanned aerial vehicles.
  • the motor 200 can be applied to, but is not limited to, a fan, a vacuum cleaner, a blower, a hand dryer, a lathe, an electric drill, a centrifuge, a generator, a flywheel energy storage, a drone, or a model aircraft.
  • the motor 200 includes a casing 101, a motor stator 100, and a motor rotor 102.
  • the inner wall of the casing 101 is formed with a plurality of recesses 101a, and the motor stator 100 is disposed in the casing 101.
  • the outer surfaces of the two connecting outer end portions 113 of the contact of the adjacent two sub-stator cores 11 are formed to face a convex surface that protrudes away from the center direction of the stator yoke portion 111, the convex surface is fitted in the concave portion 101a, and the connecting member is passed through the mounting portion.
  • the holes 113b are used to press the adjacent two sub-stator cores 11 in the same plane, thereby avoiding the problem of axial misalignment of the adjacent two sub-stator cores 11, and ensuring the adjacent two sub-stator cores 11 Axial positioning to ensure motor 200 performance.
  • the motor rotor 102 is coaxially embedded within the motor stator 100, and the motor stator 100 and the motor rotor 102 interact such that the motor rotor 102 rotates about its central axis.
  • the motor rotor 102 can be selected as a two-pole permanent magnet magnetic ring, and the two-pole permanent magnet magnetic ring can be easily prepared, and the two-pole permanent magnet magnetic ring has high strength and is easy to install.
  • the two-pole permanent magnet magnetic ring is a ring structure, and the two-pole permanent magnet magnetic ring can be integrally formed, that is, the two-pole permanent magnet magnetic ring is a unitary structure, or the two-pole permanent magnet magnetic ring can also be formed by two magnetic poles.
  • the motor rotor 102 may also be an even pole rotor such as a quadrupole magnetic ring, without being limited thereto.
  • the assembly of the motor 200 is facilitated, the production efficiency of the motor 200 is improved, axial misalignment is avoided, and the performance of the motor 200 is ensured.
  • the motor 200 according to an embodiment of the present application will be described in detail below with reference to FIGS. 1-9 in three specific embodiments. It is to be understood that the following description is only illustrative and not restrictive.
  • the motor 200 includes a casing 101, a motor stator 100, and a motor rotor 102.
  • the casing 101 is substantially cylindrical, and six recesses are formed on the inner wall of the casing 101.
  • the motor stator 100 is formed with a convex surface that is matched with the six concave portions 101a in one-to-one correspondence.
  • the motor rotor 102 is coaxially embedded in the motor stator 100, and the motor rotor 102 is an integrally formed two-pole permanent magnet magnetic ring.
  • the motor stator 100 includes a stator core 1 and six stator windings 2, and the stator core 1 includes six sub-stator cores 11 which are connected end to end in the circumferential direction, and the six sub-stator cores 11 have the same structure and each sub-stator core 11
  • Each of the sub-stator cores 11 includes a stator yoke portion 111, a stator tooth portion 112, and two connecting outer end portions 113.
  • the stator winding 2 is wound around the stator tooth portion 112, and the stator teeth are The length of the portion 112 may be greater than the length of the connecting outer end portion 113.
  • stator yoke portion 111 is formed substantially in a circular arc shape, and the two connecting outer end portions 113 are both disposed outside the stator yoke portion 111 and the two connecting outer end portions 113 are respectively located at two circumferential ends of the stator yoke portion 111.
  • the stator tooth portion 112 is disposed inside the stator yoke portion 111 and is located between the two connecting outer end portions 113 in the circumferential direction of the stator yoke portion 111, and each of the connection outer end portions 113 is formed with a groove 113a adjacent to the two sub-portions
  • the two recesses 113a connecting the outer ends 113 of the stator core 11 form a mounting hole 113b, and the connecting member is bored in the mounting hole 113b to press the adjacent two sub-stator cores 11 into the same one. In the plane.
  • stator slots are defined between two adjacent stator tooth portions 112, and the six stator slots are the same size.
  • the outer surfaces of the two connecting outer end portions 113 of the contact of the adjacent two sub-stator cores 11 are each formed to face the first convex surface 113c which protrudes away from the center direction of the stator yoke portion 111,
  • the first convex surface 113c is a circular arc surface.
  • the two first curved surfaces of the two connecting outer end portions 113 that are in contact may be formed as a convex surface, and the convex surface is a semi-circular surface. .
  • Each of the sub-stator cores 11 is individually wound, and after the winding is completed, the six sub-stator cores 11 are aligned, and six convex faces are correspondingly fitted in the six recesses 101a, so that the six sub-stator cores 11 can be closely spliced.
  • the connecting members are respectively disposed in the six mounting holes 113b, so that the adjacent two sub-stator cores 11 are intended to be pressed in the same plane in the function of the connecting members, thereby avoiding the adjacent two sub-stator irons.
  • the core 11 has problems such as axial misalignment, and it is easy to ensure the axial positioning of the adjacent two sub-stator cores 11, thereby ensuring the performance of the motor stator 100.
  • the structure of the present embodiment is substantially the same as that of the first embodiment, wherein the same components are given the same reference numerals, except that the stator core 1 includes four ends connected in series in the circumferential direction.
  • the stator cores 11, each of the stator cores 11 includes a stator yoke 111, three stator teeth 112 and two connecting outer ends 113, and the three stator teeth 112 are evenly distributed between the two connecting outer ends 113 Interval setting.
  • the motor stator 100 defines twelve stator slots of the same size.
  • the embodiment is substantially the same as the structure of the first embodiment, wherein the same components are given the same reference numerals, except that the stator core 1 includes two sub-stators connected end to end in the circumferential direction.
  • the iron core 11, each sub-stator core 11 includes a stator yoke portion 111, three stator tooth portions 112, two connecting outer end portions 113 and two outer end portions 114, and each outer end portion 114 is formed with a positioning mounting hole 114a, a fastener is disposed in the positioning mounting hole 114a to fasten each sub-stator core 11 to the casing 101 of the motor 200, and an outer surface of the outer end portion 114 is formed to be convex toward a center away from the stator yoke 111.
  • the second convex surface, the second convex surface can be matched with the concave portion 101a in the casing 101, so that the four concave portions 101a of the six concave portions 101a of the casing 101 are matched with the second convex surface, and the other two concave portions 101a are The convex surfaces match.

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  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

一种电机定子(100)和具有其的电机(200)，电机定子(100)包括定子铁芯(1)和定子绕组(2)，定子铁芯(1)包括多个子定子铁芯(11)，每个子定子铁芯(11)包括定子轭部(111)、至少一个定子齿部(112)和两个连接外端部(113)，两个连接外端部(113)分别位于定子轭部(111)的周向两端，定子齿部(112)在定子轭部(111)的周向上位于两个连接外端部(113)之间，相邻两个子定子铁芯(11)的接触的两个连接外端部(113)的两个凹槽(113a)构成一个安装孔(113b)，安装孔(113b)内有连接件以实现相邻两个子定子铁芯(11)的连接和安装定位。

Description

电机定子和具有其的电机 技术领域
本申请涉及电机制造技术领域，尤其是涉及一种电机定子和具有其的电机。
背景技术
相关技术中，电机的定子铁芯多数采用一体式的结构，使得不便于在定子轭部上绕线，导致电机定子的加工不便且加工效率低。为了简化电机定子的生产工艺，一些技术中，在电机定子生产时，将定子轭部、定子齿部和定子绕组分别模块化，再将这些模块拼装成完整的电机定子。然而，这种方式中，定子轭部的多个模块之间的拼装操作难度较大，通常需要借助其他工具完成，从而限制了电机定子的生产效率。此外，在将电机定子安装在电机的机壳上时、分块的定子铁芯易出现轴向错位等问题。
发明内容
本申请旨在至少解决现有技术中存在的技术问题之一。为此，本申请提出一种电机定子，所述电机定子便于制造、装配难度较小，且生产效率高，同时易于保证相邻子定子铁芯之间的轴向定位。
本申请还提出一种具有上述电机定子的电机。
根据本申请第一方面实施例的电机定子，包括：定子铁芯，所述定子铁芯包括沿周向依次相连的多个子定子铁芯，每个所述子定子铁芯包括定子轭部、至少一个定子齿部和两个连接外端部，两个所述连接外端部均设在所述定子轭部的外侧且分别位于所述定子轭部的周向两端，所述定子齿部设在所述定子轭部的内侧且在所述定子轭部的周向上位于两个所述连接外端部之间，每个所述连接外端部上形成有凹槽，相邻两个所述子定子铁芯的接触的两个所述连接外端部的两个所述凹槽构成一个安装孔，所述安装孔内配合有连接件以实现相邻两个所述子定子铁芯的连接和安装定位；定子绕组，所述定子绕组缠绕在所述定子齿部上。
根据本申请实施例的电机定子，通过将定子铁芯设置为包括沿周向依次相连的多个子定子铁芯，且每个子定子铁芯包括定子轭部、至少一个定子齿部和两个连接外端部，同时两个连接外端部均设在定子轭部的外侧且分别位于定子轭部的周向两端，每个连接外端部上形成有凹槽，相邻两个子定子铁芯的接触的两个连接外端部的两个凹槽构成一个安装孔，连接件穿设在安装孔内以将相邻两个子定子铁芯紧压于同一个平面内，从而 保证了相邻两个子定子铁芯的轴向定位；同时由于每个子定子铁芯的结构短小，方便了子定子铁芯的冲裁，同时节省了子定子铁芯的用材量。
根据本申请的一些实施例，相邻两个所述子定子铁芯的接触的两个所述连接外端部的外表面均形成为朝向远离所述定子轭部的中心方向凸出的第一凸面。
根据本申请的一些实施例，每个所述子定子铁芯包括多个所述定子齿部，在所述定子轭部的周向上、多个所述定子齿部均位于两个所述连接外端部之间。
根据本申请的一些实施例，每个所述子定子铁芯还包括：至少一个外端部，所述外端部设在所述定子轭部的外侧且在所述定子轭部的周向上位于相邻两个所述定子齿部之间，所述外端部的外表面均形成为朝向远离所述定子轭部的中心方向凸出的第二凸面。
根据本申请的一些实施例，将所述定子绕组分别缠绕在所述定子齿部后，相邻两个所述子定子铁芯之间通过连接件实现连接和安装定位。
根据本申请的一些实施例，相邻两个所述子定子铁芯的接触的两个所述连接外端部之间粘接或焊接。
根据本申请的一些实施例，所述定子绕组至少有两个，每个所述定子绕组以单线或多线并绕的方式缠绕在所述定子轭部上，所述定子绕组的连接方式为星形或三角形。
根据本申请的一些实施例，每个所述子定子铁芯由多个冲片叠置而成。
根据本申请第二方面实施例的电机，包括：机壳，所述机壳的内壁上形成有多个凹部；电机定子，所述电机定子为根据本申请上述第一方面实施例的电机定子，所述电机定子设在所述机壳内，相邻两个所述子定子铁芯的接触的两个所述连接外端部的外表面形成为朝向远离所述定子轭部的中心方向凸出的凸面，所述凸面配合在所述凹部内；电机转子，所述电机转子设在所述电机定子的内侧。
根据本申请实施例的电机，通过采用上述的电机定子，方便了电机的装配，提高了电机的生产效率，避免了出现轴向错位，保证了电机的性能。
本申请的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本申请的实践了解到。
附图说明
本申请的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解，其中：
图1是根据本申请实施例的电机的剖视图；
图2是图1中所示的定子铁芯的示意图；
图3是图1中所示的子定子铁芯的示意图；
图4是图1中所示的机壳的示意图；
图5是根据本申请另一个实施例的电机的剖视图；
图6是图5中所示的定子铁芯的示意图；
图7是图5中所示的子定子铁芯的示意图；
图8是图5中所示的机壳的示意图；
图9是根据本申请另再一个实施例的电机的剖视图。
附图标记：
电机200、电机定子100、机壳101、凹部101a、电机转子102、
定子铁芯1、子定子铁芯11、定子轭部111、定子齿部112、止挡部112a、
连接外端部113、凹槽113a、安装孔113b、第一凸面113c、
外端部114、定位安装孔114a、
定子绕组2。
具体实施方式
下面详细描述本申请的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本申请，而不能理解为对本申请的限制。
在本申请的描述中，需要理解的是，术语“中心”、“长度”、“宽度”、“内”、“外”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。此外，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本申请的描述中，除非另有说明，“多个”的含义是两个或两个以上。
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本申请中的具体含义。
下面参考图1-图9描述根据本申请实施例的电机定子100。
如图1-图9所示，根据本申请实施例的电机定子100，包括定子铁芯1和定子绕组2。
定子铁芯1包括沿周向依次相连的多个子定子铁芯11，每个子定子铁芯11包括定子轭部111、至少一个定子齿部112和两个连接外端部113，两个连接外端部113均设在定子轭部111的外侧且两个连接外端部113分别位于定子轭部111的周向两端，定子齿部112设在定子轭部111的内侧且在定子轭部111的周向上位于两个连接外端部113之间，每个连接外端部113上形成有凹槽113a，相邻两个子定子铁芯11的接触的两个连接外端部113的两个凹槽113a构成一个安装孔113b，安装孔113b内配合有连接件以实现相邻两个子定子铁芯11的连接和安装定位，定子绕组2缠绕在定子齿部112上。
其中，定子轭部111可以大致形成为弧形，凹槽113a可以形成为半圆形槽，此时安装孔113b为圆形孔，但不限于此。这里，需要说明的是，方向“内”是指靠近定子铁芯1中心轴线的方向，其相反方向被定义为“外”。
可以理解的是，定子铁芯1的多个子定子铁芯11的结构可以相同，也可以不相同，例如，定子铁芯1包括沿其周向首尾依次相连的两个子定子铁芯11时，这两个子定子铁芯11的定子轭部111对应的圆心角可以均为180°，或者这两个子定子铁芯11的定子轭部111对应的圆心角可以分别为120°、240°；再例如，当定子铁芯1包括沿其周向首尾依次相连的三个子定子铁芯11、且这三个子定子铁芯11的定子轭部111对应的圆心角均为120°。
根据本申请实施例的电机定子100，通过将定子铁芯1设置为包括沿周向依次相连的多个子定子铁芯11，且每个子定子铁芯11包括定子轭部111、至少一个定子齿部112和两个连接外端部113，同时两个连接外端部113均设在定子轭部111的外侧且分别位于定子轭部111的周向两端，每个连接外端部113上形成有凹槽113a，相邻两个子定子铁芯11的接触的两个连接外端部113的两个凹槽113a构成一个安装孔113b，连接件穿设在安装孔113b内以将相邻两个子定子铁芯11紧压于同一个平面内，从而保证了相邻两个子定子铁芯11的轴向定位；同时由于每个子定子铁芯11的结构短小，方便了子定子铁芯11的冲裁，同时节省了子定子铁芯11的用材量。
其中，定子齿部112的长度与连接外端部113的长度可以相等、也可以不相等。例如，在图1-图9的示例中，定子齿部112的长度大于连接外端部113的长度。这里，需要说明的是，“长度”是指沿定子轭部111的径向的长度。
在本申请的一些实施例中，相邻两个子定子铁芯11的接触的两个连接外端部113的外表面均形成为朝向远离定子轭部111的中心方向凸出的第一凸面113c，当相邻两 个子定子铁芯11拼装时、对应接触的两个连接外端部113的两个第一凸面113c构成为朝向远离定子轭部111的中心方向凸出的凸面，而电机200的机壳101的内壁上形成有与凸面相适配的多个凹部101a，将凸面对应配合在凹部101a内，从而凹部101a可以将相邻的子定子铁芯11紧扣在一起，保证了相邻子定子铁芯11拼接的紧密性。
可选地，第一凸面113c形成为弧面。例如，在图1-图9的示例中，第一凸面113c形成为圆弧面，当相邻两个子定子铁芯11对应对齐时，接触的两个连接外端部113的两个第一曲面可以构成为半圆弧面，结构简单、便于实现。
当然，电机200的机壳101内壁上的凹部101a还可以大致形成为燕尾槽，此时相邻两个子定子铁芯11接触的两个连接外端部113的两个第一凸面113c构成的凸面与上述燕尾槽相适配，同样可以实现相邻子定子铁芯11的紧密配合，保证相邻子定子铁芯11拼接的紧密性。但不限于此。
在本申请的具体示例中，安装孔113b为光孔或螺孔，连接件与安装孔113b配合，从而在保证相邻子定子铁芯11之间轴向定位的前提下、方便了定子铁芯1的安装。其中，连接件可选为螺钉等螺纹紧固件。
在本申请的一些实施例中，每个子定子铁芯11包括多个定子齿部112，在定子轭部111的周向上、多个定子齿部112均位于两个连接外端部113之间。例如，在图5-图8的示例中，每个子定子铁芯11包括三个定子齿部112，这三个定子齿部112在两个连接外端部113之间、沿定子轭部111的周向均匀间隔布置。
当然，在图1-图4的示例中，每个子定子铁芯11可以仅包括一个定子齿部112，该定子齿部112分别与两个连接外端部113间隔设置。
进一步地，每个子定子铁芯11还包括至少一个外端部114，外端部114设在定子轭部111的外侧且在定子轭部111的周向上位于相邻两个定子齿部112之间。例如，在图9的示例中，每个子定子铁芯11包括定子轭部111、三个定子齿部112、两个连接外端部113和两个外端部114，两个外端部114均设在定子轭部111的外侧且两个外端部114在定子轭部111的周向上位于相邻两个定子齿部112之间。此时，每个外端部114上可以形成有定位安装孔114a，定位安装孔114a内设有紧固件以将每个子定子铁芯11紧固在电机200的机壳101上，避免了电机200高速运行时、子定子铁芯11脱离电机200的机壳101，保证了每个子定子铁芯11与电机200的机壳101之间连接可靠。
如图9所示，外端部114外表面形成为朝向远离定子轭部111的中心方向凸出的第二凸面，第二凸面可以与机壳101内的凹部101a相适配。
在本申请的一些实施例中，将定子绕组2分别缠绕在每个子定子铁芯11的定子轭 齿部112后，相邻两个子定子铁芯11之间通过连接件实现连接。也就是说，当子定子铁芯11包括定子轭部111、一个定子齿部112和两个拼接外端部115时，定子绕组2缠绕在该定子齿部112上；当子定子铁芯11包括定子轭部111、多个定子齿部112和两个拼接外端部115时，每个定子齿部112上均缠绕定子绕组2。由此，方便了定子铁芯1的绕线，提高了电机定子100的加工效率。
在本申请的具体实施例中，定子齿部112的邻近定子轭部111中心的一端设有齿靴部112a，齿靴部112a沿定子轭部111的周向从定子齿部112的宽度方向上的两侧延伸出，由此，齿靴部112a的横截面积较大，从而可以对定子齿部112上的定子绕组2起到限位作用。当然，定子齿部112的邻近定子轭部111中心的一端还可以不设置齿靴部112a。这里，需要说明的是，“宽度”是指沿定子轭部111的周向的宽度。
在本申请的一些实施例中，相邻两个子定子铁芯11的接触的两个拼接外端部114之间粘接或焊接，从而进一步保证了相邻两个子定子铁芯11之间的连接强度、保证了相邻两个子定子铁芯11的相对位置的稳定性，进一步保证了相邻子定子铁芯11之间的轴向定位，同时避免了在相邻两个子定子铁芯11的接触的两个子定子齿部112之间粘接或焊接而影响电机定子100的磁场，保证了电机定子100的使用可靠性。
在本申请的一些实施例中，定子绕组2至少有两个，每个定子绕组2以单线或多线并绕的方式缠绕在定子轭部111上。可以理解的是，多个定子绕组2的缠绕方向可以相同或相反，当多个定子绕组2的缠绕方向相同时，每个定子绕组2的缠绕方向可以均为正向，也可以均为反向。此外，定子绕组2的连接方式可以是串联或并联，从而定子绕组2可以连接成星形(或称为Y形)、三角形或其他方式。定子绕组2的缠绕方式、缠绕方向及连接方式是本领域技术人员普遍知晓的，这里不作具体限定。
在本申请的一些实施例中，每个子定子铁芯11由多个冲片叠置而成，从而方便了子定子铁芯11的加工，进而方便了定子铁心的加工。
根据本申请第二方面实施例的电机200，包括机壳101和电机定子100，电机定子100为根据本申请上述第一方面实施例的电机定子100。可以理解的是，电机200可以是单相电机、三相电机或多相电机等；电机200可以应用于家用电器、医疗器械、发电及储能设备、化学检测及物质风力设备和无人飞行器等，例如，电机200可以应用于风机、吸尘器、吹风机、干手机、车床、电钻、离心机、发电机、飞轮储能、无人机或航模中，但不限于此。
例如，在图1-图9的示例中，电机200包括机壳101、电机定子100和电机转子102，机壳101的内壁上形成有多个凹部101a，电机定子100设在机壳101内，相邻两个子 定子铁芯11的接触的两个连接外端部113的外表面形成为朝向远离定子轭部111的中心方向凸出的凸面，凸面配合在凹部101a内，连接件穿设在安装孔113b内以将相邻两个子定子铁芯11紧压于同一个平面内，从而避免了相邻两个子定子铁芯11出现轴向错位等问题，保证了相邻两个子定子铁芯11的轴向定位，进而保证电机200性能。电机转子102同轴嵌设在电机定子100内，电机定子100和电机转子102之间相互作用，使得电机转子102绕其中心轴线转动。其中，电机转子102可选为两极永磁磁环，两极永磁磁环容易制备，且两极永磁磁环的强度高、容易安装。具体地，两极永磁磁环为环形结构，且两极永磁磁环可以一体成型，即两极永磁磁环为整体结构，或者两极永磁磁环还可以由两个磁极拼接形成。当然，电机转子102还可以为四极磁环等偶数极转子，而不限于此。
根据本申请实施例的电机200，通过采用上述的电机定子100，方便了电机200的装配，提高了电机200的生产效率，避免了出现轴向错位，保证了电机200的性能。
根据本申请实施例的电机200的其他构成以及操作对于本领域普通技术人员而言都是已知的，这里不再详细描述。
下面参考图1-图9以三个具体的实施例详细描述根据本申请实施例的电机200。值得理解的是，下述描述仅是示例性说明，而不是对发明的具体限制。
实施例一
在本实施例中，如图1-图4所示，电机200包括机壳101、电机定子100和电机转子102，机壳101大致为圆筒结构，机壳101的内壁上形成有六个凹部101a，电机定子100上形成有与六个凹部101a一一对应适配的凸面，电机转子102同轴嵌设在电机定子100内，电机转子102为一体成型的两极永磁磁环。
电机定子100包括定子铁芯1和六个定子绕组2，定子铁芯1包括沿周向依次首尾相连的六个子定子铁芯11，六个子定子铁芯11的结构相同且每个子定子铁芯11均由多个冲片叠置而成，每个子定子铁芯11包括定子轭部111、一个定子齿部112和两个连接外端部113，定子绕组2缠绕在定子齿部112上，定子齿部112的长度可以大于连接外端部113的长度。
具体地，定子轭部111大致形成为圆弧形，两个连接外端部113均设在定子轭部111的外侧且两个连接外端部113分别位于定子轭部111的周向两端，定子齿部112设在定子轭部111的内侧且在定子轭部111的周向上位于两个连接外端部113之间，每个连接外端部113上形成有凹槽113a，相邻两个子定子铁芯11的接触的两个连接外端部113 的两个凹槽113a构成一个安装孔113b，连接件穿设在安装孔113b内以将相邻两个子定子铁芯11紧压于同一个平面内。此时，相邻两个定子齿部112之间限定出定子槽，六个定子槽大小相同。
如图1-图3所示，相邻两个子定子铁芯11的接触的两个连接外端部113的外表面均形成为朝向远离定子轭部111的中心方向凸出的第一凸面113c，第一凸面113c为圆弧面，当相邻两个子定子铁芯11对应对齐时，接触的两个连接外端部113的两个第一曲面可以构成为凸面，此时凸面为半圆弧面。
每个子定子铁芯11单独绕线，绕线完成后将六个子定子铁芯11相应对齐，并将六个凸面一一对应配合在六个凹部101a内，使得六个子定子铁芯11可以紧密拼接，此时将连接件分别穿设在六个安装孔113b内，使得相邻两个子定子铁芯11在连接件的作用想被紧压于同一个平面内，从而避免了相邻两个子定子铁芯11出现轴向错位等问题，易于保证相邻两个子定子铁芯11的轴向定位，进而保证电机定子100的性能。
实施例二
如图5-图8所示，本实施例与实施例一的结构大致相同，其中相同的部件采用相同的附图标记，不同之处在于：定子铁芯1包括沿周向依次首尾相连的四个子定子铁芯11，每个子定子铁芯11包括定子轭部111、三个定子齿部112和两个连接外端部113，三个定子齿部112在两个连接外端部113之间均匀间隔设置。此时，电机定子100限定出十二个大小相同的定子槽。
实施例三
如图9所示，本实施例与实施例一的结构大致相同，其中相同的部件采用相同的附图标记，不同之处在于：定子铁芯1包括沿周向依次首尾相连的两个个子定子铁芯11，每个子定子铁芯11包括定子轭部111、三个定子齿部112、两个连接外端部113和两个外端部114，每个外端部114上形成有定位安装孔114a，定位安装孔114a内设有紧固件以将每个子定子铁芯11紧固在电机200的机壳101上，且外端部114外表面形成为朝向远离定子轭部111的中心方向凸出的第二凸面，第二凸面可以与机壳101内的凹部101a相适配，从而机壳101的六个凹部101a中的四个凹部101a与第二凸面相配合、另外两个凹部101a与凸面相配合。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示意性实施例”、“示 例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本申请的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
尽管已经示出和描述了本申请的实施例，本领域的普通技术人员可以理解：在不脱离本申请的原理和宗旨的情况下可以对这些实施例进行多种变化、修改、替换和变型，本申请的范围由权利要求及其等同物限定。

Claims (9)

  1. 一种电机定子，其特征在于，包括：
    定子铁芯，所述定子铁芯包括沿周向依次相连的多个子定子铁芯，每个所述子定子铁芯包括定子轭部、至少一个定子齿部和两个连接外端部，两个所述连接外端部均设在所述定子轭部的外侧且分别位于所述定子轭部的周向两端，所述定子齿部设在所述定子轭部的内侧且在所述定子轭部的周向上位于两个所述连接外端部之间，每个所述连接外端部上形成有凹槽，相邻两个所述子定子铁芯的接触的两个所述连接外端部的两个所述凹槽构成一个安装孔，所述安装孔内配合有连接件以实现相邻两个所述子定子铁芯的连接和安装定位；
    定子绕组，所述定子绕组缠绕在所述定子齿部上。
  2. 根据权利要求1所述的电机定子，其特征在于，相邻两个所述子定子铁芯的接触的两个所述连接外端部的外表面均形成为朝向远离所述定子轭部的中心方向凸出的第一凸面。
  3. 根据权利要求1或2所述的电机定子，其特征在于，每个所述子定子铁芯包括多个所述定子齿部，在所述定子轭部的周向上、多个所述定子齿部均位于两个所述连接外端部之间。
  4. 根据权利要求3所述的电机定子，其特征在于，每个所述子定子铁芯还包括：
    至少一个外端部，所述外端部设在所述定子轭部的外侧且在所述定子轭部的周向上位于相邻两个所述定子齿部之间，所述外端部的外表面均形成为朝向远离所述定子轭部的中心方向凸出的第二凸面。
  5. 根据权利要求1-4中任一项所述的电机定子，其特征在于，将所述定子绕组分别缠绕在所述定子齿部后，相邻两个所述子定子铁芯之间通过连接件实现连接和安装定位。
  6. 根据权利要求1-5中任一项所述的电机定子，其特征在于，相邻两个所述子定子铁芯的接触的两个所述连接外端部之间粘接或焊接。
  7. 根据权利要求1-6中任一项所述的电机定子，其特征在于，所述定子绕组至少有两个，每个所述定子绕组以单线或多线并绕的方式缠绕在所述定子轭部上，所述定子绕组的连接方式为星形或三角形。
  8. 根据权利要求1-7中任一项所述的电机定子，其特征在于，每个所述子定子铁芯由多个冲片叠置而成。
  9. 一种电机，其特征在于，包括：
    机壳，所述机壳的内壁上形成有多个凹部；
    电机定子，所述电机定子为根据权利要求1-8中任一项所述的电机定子，所述电机定子设在所述机壳内，相邻两个所述子定子铁芯的接触的两个所述连接外端部的外表面形成为朝向远离所述定子轭部的中心方向凸出的凸面，所述凸面配合在所述凹部内；
    电机转子，所述电机转子设在所述电机定子的内侧。
PCT/CN2018/093169 2017-12-11 2018-06-27 电机定子和具有其的电机 WO2019114251A1 (zh)

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Publication number Priority date Publication date Assignee Title
CN1753275A (zh) * 2004-09-20 2006-03-29 东洋电装株式会社 回转电机的定子铁心
JP2013128339A (ja) * 2011-12-16 2013-06-27 Toyota Motor Corp モータ用ステータとその製造方法
CN204304632U (zh) * 2014-12-27 2015-04-29 中山大洋电机制造有限公司 一种定子冲片及其应用的塑封电机
CN204794395U (zh) * 2015-07-16 2015-11-18 莱克电气股份有限公司 无刷电机铁芯结构及无刷吸尘器电机
CN107994692A (zh) * 2017-12-11 2018-05-04 广东威灵电机制造有限公司 电机定子和具有其的电机

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Publication number Priority date Publication date Assignee Title
CN1753275A (zh) * 2004-09-20 2006-03-29 东洋电装株式会社 回转电机的定子铁心
JP2013128339A (ja) * 2011-12-16 2013-06-27 Toyota Motor Corp モータ用ステータとその製造方法
CN204304632U (zh) * 2014-12-27 2015-04-29 中山大洋电机制造有限公司 一种定子冲片及其应用的塑封电机
CN204794395U (zh) * 2015-07-16 2015-11-18 莱克电气股份有限公司 无刷电机铁芯结构及无刷吸尘器电机
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