WO2020057529A1 - 一种定子铁芯、电机定子以及电机 - Google Patents

一种定子铁芯、电机定子以及电机 Download PDF

Info

Publication number
WO2020057529A1
WO2020057529A1 PCT/CN2019/106339 CN2019106339W WO2020057529A1 WO 2020057529 A1 WO2020057529 A1 WO 2020057529A1 CN 2019106339 W CN2019106339 W CN 2019106339W WO 2020057529 A1 WO2020057529 A1 WO 2020057529A1
Authority
WO
WIPO (PCT)
Prior art keywords
stator
core
iron core
slot
motor
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2019/106339
Other languages
English (en)
French (fr)
Inventor
刘元江
刘鹏
周忠厚
陈志�
曹娟娟
刘元宜
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.)
Goertek Inc
Original Assignee
Goertek Inc
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 Goertek Inc filed Critical Goertek Inc
Publication of WO2020057529A1 publication Critical patent/WO2020057529A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • 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
    • 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
    • H02K1/16—Stator cores with slots for windings

Definitions

  • the present invention relates to the field of motors, and more particularly, to a stator core, a motor stator, and a motor.
  • Permanent magnet synchronous motor is a synchronous motor that generates a synchronous rotating magnetic field by permanent magnet excitation. Permanent magnet synchronous motors have been widely used in some automated mechanical equipment, robots, electric vehicles and other fields due to their many advantages such as low loss, high efficiency, light weight, convenient control, constant speed, and stable and reliable operation.
  • the stator core in a permanent magnet synchronous machine usually has a cogged structure.
  • the teeth on the stator core are used to guide the magnetic lines of force to reduce magnetic resistance
  • the slots on the stator core are used to inlay windings and hinge with the magnetic lines of force in the teeth.
  • the rotor has different numbers of magnetic lines of force at different positions.
  • the magnets attract each other, which will hinder them.
  • the rotation of a permanent magnet synchronous motor and this phenomenon is called the "cogging effect" of the permanent magnet synchronous motor.
  • the "cogging effect” will cause the motor speed to fluctuate, which will cause the motor to have undesirable phenomena such as position control errors and vibrations, which will eventually affect the performance of the motor such as smoothness.
  • An object of the present invention is to provide a new technical solution for a stator core.
  • a stator iron core including a first iron core and a second iron core assembled together; the first iron core is distributed along the circumferential direction with a plurality of parts facing the first iron core.
  • the stator teeth protruding from the two iron cores are used for winding the coils in advance, and stator slots with openings are formed between adjacent stator teeth.
  • the first and second cores are configured as: After the core and the second iron core are assembled together, the side wall of the second iron core closes the opening of each stator slot.
  • a plurality of the stator teeth are uniformly distributed on an outer ring of the first core, and the second core is assembled outside the first core.
  • a plurality of the stator teeth are evenly distributed on the inner ring of the first core, and the second core is assembled inside the first core.
  • a plurality of recesses corresponding to the plurality of stator teeth are provided along an inner surface or an outer surface of a side wall of the second iron core in a circumferential direction, and adjacent stator recesses are formed with the stator.
  • a shape of the recessed portion is adapted to a shape of an end portion of the stator tooth, and an end portion of the stator tooth and the recessed portion are coupled together in an inserting or engaging manner.
  • the shape of the convex portion is adapted to the shape of the opening of the stator slot, the convex portion covers the opening of the stator slot, and the convex portion is configured for closing An opening of the stator slot.
  • stator slots are fan-shaped, circular, oval, U-shaped, V-shaped, rectangular, or trapezoidal.
  • the first core is formed by laminating multiple stator punches; the second core is formed by laminating multiple stator punches.
  • a motor stator including the stator core according to any one of the above.
  • a motor including the above-mentioned motor stator.
  • the inventor of the present invention found that in the prior art, when the stator winding of a closed-slot stator core is being wound, there is indeed a problem that it is difficult to use an automatic winding device for winding because the slot is completely closed, and manual winding is used. Not only is the cost high, but the efficiency is very low. Therefore, the technical task to be implemented or the technical problem to be solved by the present invention is never thought or expected by those skilled in the art, so the present invention is a new technical solution.
  • the stator core provided by the embodiment of the present invention can realize the opening or closing of the stator slots by assembling.
  • the structural design can effectively reduce or avoid the cogging effect, and is also beneficial to winding the stator teeth by using automatic winding equipment.
  • FIG. 1 is a top view of a stator core provided by an embodiment of the present invention.
  • FIG. 2 is a top view of a first core in a stator core according to an embodiment of the present invention.
  • FIG. 3 is a top view of a second core in a stator core according to an embodiment of the present invention.
  • FIG. 4 is a side view of a stator core provided by an embodiment of the present invention.
  • the first iron core 2. The second iron core, 11. The stator slot, 12. The stator teeth, 21. The recessed part, 22. The raised part, 3. The stator punch.
  • any specific value should be construed as exemplary only and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values.
  • the stator core provided by the embodiment of the present invention can be used in a motor, especially in a permanent magnet synchronous motor, which can effectively reduce or even avoid a cogging effect, and has the characteristics of convenient stator winding.
  • FIG. 1 is a top view of a stator core provided by an embodiment of the present invention.
  • FIG. 2 is a top view of a first core in a stator core according to an embodiment of the present invention.
  • FIG. 3 is a top view of a second core in a stator core according to an embodiment of the present invention.
  • FIG. 4 is a side view of a stator core provided by an embodiment of the present invention. Now taking FIG. 1 to FIG. 4 as examples, the structural characteristics and principles of the stator core provided by the embodiment of the present invention will be described.
  • An embodiment of the present invention provides a stator core, as shown in FIG. 1, FIG. 2, and FIG. 3, including a first core 1 and a second core 2 assembled together; A plurality of stator teeth 12 protruding toward the second iron core 2 and used to wind the coil in advance are distributed to each other. A stator slot 11 having an opening is formed between two adjacent stator teeth 12.
  • the second iron core 2 is configured: when the first iron core 1 and the second iron core 2 are assembled together, the side wall of the second iron core 2 closes the openings of the stator slots 11 so that each The stator slot 11 forms a closed structure.
  • the first core 1 and the second core 2 both have a ring structure, and are mutually matched in shape so as to be able to be assembled together.
  • the stator core provided by the embodiment of the present invention has the characteristics of simple structure.
  • the first iron core 1 and the second iron core 2 are designed as a separable structure, that is, the first iron core 1 and the second iron core 2 can be separated from each other, or the two can be assembled together by assembly. Specifically, when the first iron core 1 and the second iron core 2 are separated from each other, each stator slot 11 on the first iron core 1 is an open structure.
  • This design facilitates winding the stator teeth 12 by using an automatic winding device.
  • the sub-winding is formulated to solve the problem of the difficulty of automatic winding existing in the existing closed stator slot.
  • the side walls of the second iron core 2 can completely close all the openings of the stator slots 11 on the first iron core 1.
  • the first All stator slots 11 on the iron core 1 form a closed structure.
  • the first iron core 1 and the second iron core 2 may be joined together in a clearance fit manner.
  • the gap fitting method is relatively simple to implement, but can realize the movable connection between the first iron core 1 and the second iron core 2, so that the disassembly and assembly of the first iron core 1 and the second iron core 2 are more convenient.
  • automatic winding can be realized, which has many advantages such as high efficiency and good winding consistency.
  • stator teeth 12 are evenly distributed on the outer ring of the first iron core 1, and the second iron core 2 is assembled outside the first iron core 1.
  • each stator slot 11 face the radial outer end of the first iron core 1, and the second iron core 2 is assembled on the outer ring of the first iron core 1, and the side wall of the second iron core 2 can be used to
  • the openings of all the stator slots 11 on the first iron core 1 are completely closed, that is, the side wall of the second iron core 2 can be used to close the entire outer ring of the first iron core 1, that is, the second iron core 2 can
  • the peripheral surface of the outer ring of the first iron core 1 is completely closed.
  • the closed form of the stator slot 11 can effectively reduce or avoid the cogging effect, which is beneficial to the smooth operation of the motor.
  • the plurality of stator teeth 12 are evenly distributed on the inner ring of the first iron core 1, and the second iron core 2 is assembled inside the first iron core 1.
  • each stator slot 11 face the radially inner end of the first iron core 1, at this time, the second iron core 2 is assembled on the inner ring of the first iron core 1, and the side wall of the second iron core 2 can be used to The openings of all the stator slots 11 on the first iron core 1 are completely closed, that is, the side wall of the second iron core 2 can be used to close the entire inner ring of the first iron core 1, that is, the second iron core 2 can The circumferential surface of the inner ring of the first iron core 1 is completely closed. In this way of cooperation, each stator slot 11 on the first iron core 1 can also form a closed structure that can reduce the cogging effect.
  • a structure of the second iron core 2 is as follows: Referring to FIG. 1 and FIG. 3, an inner surface of a sidewall of the second iron core 2 is provided along the circumferential direction corresponding to a plurality of stator teeth 12. A plurality of recessed portions 21 are formed between adjacent recessed portions 21 to form a protruding portion 22 corresponding to the opening of the stator slot 11.
  • the second iron core 2 of this structure can be assembled on the outer ring of the first iron core 1 when in use, so as to close the openings of all the stator slots 11 on the first iron core 1 through the side walls.
  • the structure of the second iron core 2 described above may also be: a plurality of recessed portions corresponding to a plurality of stator teeth are provided along an outer surface of a side wall of the second core 2 in a circumferential direction, and adjacent recessed portions are provided. A convex portion corresponding to the opening of the stator slot is formed therebetween.
  • the second iron core 2 of this structure is suitable for being assembled on the inner ring of the first iron core 1 when in use, so as to close the openings of all the stator slots 11 on the first iron core 1.
  • the number of the recessed portions 21 on the second iron core 2 is the same as the number of the stator teeth 12 on the first iron core 1, and the second iron core 2 is convex.
  • the number of the rising portions 22 is the same as the number of the stator slots 11 on the first iron core 1, so as to realize the cooperation between the stator teeth 12 and the recessed portions 21 and the convex portions 22 and the stator slots 11 so that the first iron core 1 It is well assembled with the second iron core 2.
  • the shape of the recessed portion 21 is adapted to the shape of the ends of the stator teeth 12, and the ends of the stator teeth 12 and the recessed portions 21 may be combined together by means of inserting or engaging.
  • the shape of the ends of the stator teeth 12 may be arc-shaped, and the recessed portions 21 are arc-shaped grooves matching them, so that the ends of the stator teeth 12 and the recessed portions 21 cooperate well.
  • the way of inserting or engaging is favorable for assembling the first iron core 1 and the second iron core 2 firmly together.
  • These assembly methods are relatively simple, easy to implement, and do not increase manufacturing costs.
  • the shape of the protruding portion 22 is adapted to the shape of the opening of the stator slot 11, the protruding portion 22 covers the opening of the stator slot 11, and the protruding portion 22 is configured to close the opening of the stator slot 11. .
  • a closed stator slot is formed, which can effectively reduce the air gap magnetic resistance, reduce the cogging effect, and facilitate the smooth running of the motor.
  • the protruding portion 22 may be combined with the slot of the stator slot 11 by means of buckling, engaging, etc., so as to close the slot of the stator slot 11.
  • stator slot 11 can be flexibly selected according to actual needs.
  • a stator slot 11 is formed between two adjacent stator teeth 12 through which a stator winding can pass.
  • the stator slot 11 may be fan-shaped, circular, oval, U-shaped, V-shaped, rectangular, or trapezoidal. It is only necessary to ensure that the slot bottom thickness of the stator slot 11 is thin, for example: the slot bottom thickness is 0.3mm-0.5mmm. This design can effectively reduce the phenomenon of leakage magnetic flux, and can improve the performance of the motor after being applied to the motor, ensuring The motor runs smoothly.
  • the shape of the side wall of the stator slot 11 and the opening of the slot is not limited in the present invention.
  • first iron core 1 and the second iron core 1 are each formed by laminating multiple stator punches 3. Such a design manner facilitates the production and processing of the first iron core 1 and the second iron core 2.
  • first iron core 1 and the second iron core 2 are assembled together, referring to FIG. 4, it can be seen that a laminated structure is formed.
  • the stator punches forming the first iron core 1 have a ring structure, and the stator punches forming the second iron core 2 also have a ring structure.
  • stator punches 3 may be fixed by using fasteners, and the fasteners may be rivets, for example.
  • the fasteners may be rivets, for example.
  • multiple stator punching pieces 3 may also be joined together by welding.
  • the multiple stator punching pieces 3 can also be combined in other ways, which is not limited in the present invention.
  • the stator punch 3 can be a cold-rolled silicon steel sheet or a hot-rolled silicon steel sheet with a thickness of 0.25mm-0.5mm.
  • Such a design can effectively reduce eddy current loss and hysteresis loss, and reduce the heating of the iron core.
  • the thickness of the silicon steel sheet is thin, it can significantly reduce eddy current loss and reduce core heating, but it is not easy to be too thin, otherwise it is not easy to process and it will increase production costs.
  • the present invention also provides a motor stator including the stator core as described above.
  • the stator core is configured such that a stator winding is wound in advance on the stator teeth of the first core.
  • the motor stator provided by the invention can directly wind the stator winding on the stator teeth, and has the characteristics of convenient and fast winding.
  • a winding slot is provided on an outer wall of at least one stator tooth 12 of the first iron core 1, and a stator winding is wound in the winding slot.
  • the stator winding is a copper coil winding.
  • the above-mentioned motor stator can be applied to a motor, especially to a permanent magnet synchronous motor.
  • the motor stator can improve the air gap magnetic density of the permanent magnet synchronous motor, and avoid the cogging torque of the permanent magnet synchronous motor, and finally can effectively improve the motor performance.
  • the present invention also provides a motor including the motor stator as described above.
  • the above-mentioned motor stator is used in the motor, thereby improving the overall performance of the motor.
  • the motor can be used in many fields such as electric vehicles or robots.

Landscapes

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

Abstract

一种定子铁芯、电机定子以及电机。该定子铁芯包括装配在一起的第一铁芯（1）和第二铁芯（2）；所述第一铁芯（1）上沿周向分布有多个朝向所述第二铁芯（2）伸出的定子齿（12），相邻的定子齿（12）之间形成有具有开口的定子槽（11），所述第一铁芯（1）、第二铁芯（2）被配置为：当第一铁芯（1）和第二铁芯（2）装配在一起后，第二铁芯（2）的侧壁封闭各个定子槽（11）的开口。其解决了闭口槽定子铁芯绕线困难的问题。

Description

一种定子铁芯、电机定子以及电机 技术领域
本发明涉及电机领域，更具体地，涉及一种定子铁芯、电机定子以及电机。
背景技术
永磁体同步电机是由永磁体励磁产生同步旋转磁场的同步电机。永磁体同步电机因具有损耗低、效率高、重量轻、控制方便、转速恒定以及运行平稳可靠等诸多优点，现已经被广泛应用于一些自动化的机械设备、机器人、电动汽车等领域。
永磁体同步电机内的定子铁芯通常为齿槽结构。其中，定子铁芯上的齿用来引导磁力线，以降低磁阻，而定子铁芯上的槽则用来镶嵌绕组，并与齿中的磁力线铰链。然而，由于定子铁芯的齿与定子铁芯的槽的不同导磁性会使得转子在不同位置有着数量不等的磁力线，在磁极对准定子铁芯齿的位置，磁铁相吸，以至于会阻碍永磁体同步电机的转动，而这一现象就被称之为永磁体同步电机的“齿槽效应”。实际上，在电机的应用中发现：“齿槽效应”会引起电机速度波动，从而导致电机出现位置控制误差和振动等不良现象，最终会影响电机运行的平稳性等性能。
而为了降低电机的“齿槽效应”，现有技术中出现了一种闭口槽定子铁芯。闭口槽定子铁芯的特点在于：定子铁芯上的槽是封闭的。这一结构在使用中可以有效的降低，甚至避免出现“齿槽效应”，但是闭口槽的结构在进行定子绕线时存在一个比较大的问题：采用自动绕线设备绕线这一过程实施起来比较困难，所以对于闭口槽的定子铁芯目前只能采用人工绕线的方式，然而人工绕线方式存在成本较高但效率较低的问题。
由此可见，非常有必要研究出新的闭口槽结构的定子铁芯，以解决现有技术中的缺陷。
发明内容
本发明的一个目的是提供一种定子铁芯的新技术方案。
根据本发明的第一个方面，提供了一种定子铁芯，包括装配在一起的第一铁芯和第二铁芯；所述第一铁芯上沿周向分布有多个朝向所述第二铁芯伸出的且用于预先缠绕线圈的定子齿，相邻的定子齿之间形成有具有开口的定子槽，所述第一铁芯、第二铁芯被配置为：当第一铁芯和第二铁芯装配在一起后，第二铁芯的侧壁封闭各个定子槽的开口。
可选地，多个所述定子齿均匀的分布在所述第一铁芯的外圈上，所述第二铁芯装配在所述第一铁芯的外部。
可选地，多个所述定子齿均匀的分布在所述第一铁芯的内圈上，所述第二铁芯装配在所述第一铁芯的内部。
可选地，所述第二铁芯的侧壁内表面或者外表面沿周向设置有与所述多个定子齿相对应的多个凹陷部，相邻的凹陷部之间形成与所述定子槽的开口相对应的凸起部。
可选地，所述凹陷部的形状与所述定子齿的端部的形状相适配，所述定子齿的端部与所述凹陷部以插合或者卡合的方式结合在一起。
可选地，所述凸起部的形状与所述定子槽的开口的形状相适配，所述凸起部覆盖在所述定子槽的开口上，所述凸起部被配置为用于封闭所述定子槽的开口。
可选地，所述定子槽呈扇形、圆形、椭圆形、U形、V形、矩形或者梯形。
可选地，所述第一铁芯由多片定子冲片叠压而成；所述第二铁芯由多片定子冲片叠压而成。
根据本发明的第二个方面，提供了一种电机定子，包括上述任一项所述的定子铁芯。
根据本发明的第三个方面，提供了一种电机，包括上述的电机定子。
本发明的发明人发现，在现有技术中，对于闭口槽定子铁芯在进行定子绕线时，由于槽口完全封闭确实存在采用自动绕线设备绕线比较困难的 问题，而采用人工绕线不仅成本高，而且效率非常低。因此，本发明所要实现的技术任务或者所要解决的技术问题是本领域技术人员从未想到的或者没有预期到的，故本发明是一种新的技术方案。
本发明实施例提供的定子铁芯，可以通过装配的方式实现定子槽的敞开或者封闭，该结构设计能有效降低或者避免齿槽效应，还利于使用自动绕线设备对定子齿进行绕线。
通过以下参照附图对本发明的示例性实施例的详细描述，本发明的其它特征及其优点将会变得清楚。
附图说明
被结合在说明书中并构成说明书的一部分的附图示出了本发明的实施例，并且连同其说明一起用于解释本发明的原理。
图1是本发明实施例提供的一种定子铁芯的俯视图。
图2是本发明实施例提供的一种定子铁芯内第一铁芯的俯视图。
图3是本发明实施例提供的一种定子铁芯内第二铁芯的俯视图。
图4是本发明实施例提供的一种定子铁芯的侧视图。
附图标记说明。
1.第一铁芯，2.第二铁芯，11.定子槽，12.定子齿，21.凹陷部，22.凸起部，3.定子冲片。
具体实施方式
现在将参照附图来详细描述本发明的各种示例性实施例。应注意到：除非另外具体说明，否则在这些实施例中阐述的部件和步骤的相对布置、数字表达式和数值不限制本发明的范围。
以下对至少一个示例性实施例的描述实际上仅仅是说明性的，决不作为对本发明及其应用或使用的任何限制。
对于相关领域普通技术人员已知的技术、方法和设备可能不作详细讨论，但在适当情况下，所述技术、方法和设备应当被视为说明书的一部分。
在这里示出和讨论的所有例子中，任何具体值应被解释为仅仅是示例 性的，而不是作为限制。因此，示例性实施例的其它例子可以具有不同的值。
应注意到：相似的标号和字母在下面的附图中表示类似项，因此，一旦某一项在一个附图中被定义，则在随后的附图中不需要对其进行进一步讨论。
本发明实施例提供的定子铁芯，可应于电机内，特别是应用于永磁体同步电机内，能有效降低，甚至避免齿槽效应，并且具有定子绕线方便的特点。
图1是本发明实施例提供的一种定子铁芯的俯视图。图2是本发明实施例提供的一种定子铁芯内第一铁芯的俯视图。图3是本发明实施例提供的一种定子铁芯内第二铁芯的俯视图。图4是本发明实施例提供的一种定子铁芯的侧视图。现以图1-图4为例，对本发明实施例提供的定子铁芯的结构特征、原理等进行描述。
本发明实施例提供了一种定子铁芯，参照图1、图2和图3所示，包括装配在一起的第一铁芯1和第二铁芯2；在第一铁芯1上沿周向分布有多个朝向第二铁芯2伸出的且用于预先缠绕线圈的定子齿12，相邻的两个定子齿12之间形成有具有开口的定子槽11，上述的第一铁芯1、第二铁芯2被配置为：当第一铁芯1和第二铁芯2装配在一起后，第二铁芯2的侧壁封闭各个定子槽11的开口，以使各个具有开口的定子槽11形成一种闭口结构。
在上述的定子铁芯的结构中，第一铁芯1和第二铁芯2均呈环状结构，且在形状上相互配合，以便于能装配在一起。
本发明实施例提供的定子铁芯，具有结构简单的特点。其中，第一铁芯1和第二铁芯2设计为可分离式的结构，即第一铁芯1和第二铁芯2可以彼此分离，也可以通过组装的方式将两者装配在一起。具体地，当第一铁芯1和第二铁芯2彼此分离时，第一铁芯1上的各个定子槽11均为开口结构，这样的设计便于采用自动绕线设备在定子齿12上绕制定子绕组，解决了现有闭口定子槽存在的自动绕线困难的问题。特别是，当第一铁芯1和第二铁芯2装配在一起时，第二铁芯2侧壁能将第一铁芯1上的所有定子槽11的开口全部封闭住，此时第一铁芯1上的所有定子槽11形成闭口 结构，这样的设计在使用中能有效避免出现齿槽效应。
其中，第一铁芯1和第二铁芯2之间可以采用间隙配合的方式结合在一起。间隙配合方式实现起来比较简单，但能实现第一铁芯1和第二铁芯2之间的活动连接，使得第一铁芯1和第二铁芯2的拆卸和组合装配都比较方便。尤其是在对各个定子齿12绕制定子绕组时，可以实现自动化绕制，具有效率高以及绕线一致性好等诸多优点。
可选地，多个定子齿12均匀的分布在第一铁芯1的外圈上，第二铁芯2装配在第一铁芯1的外部。
其中，各个定子槽11的开口均朝向第一铁芯1径向外端，此时第二铁芯2装配在第一铁芯1的外圈上，可以利用第二铁芯2的侧壁将第一铁芯1上的所有定子槽11的开口全部封闭住，即第二铁芯2的侧壁能够用于封闭第一铁芯1的整个外圈，也就是说通过第二铁芯2可以使第一铁芯1的外圈的圆周面完全封闭。在使用中，定子槽11闭口这种形式能有效的降低或者避免齿槽效应，有利于电机运行的平稳性。
可选地，多个定子齿12均匀的分布在第一铁芯1的内圈上，第二铁芯2装配在第一铁芯1的内部。
其中，各个定子槽11的开口均朝向第一铁芯1径向内端，此时第二铁芯2装配在第一铁芯1的内圈上，可以利用第二铁芯2的侧壁将第一铁芯1上的所有定子槽11的开口全部封闭住，即第二铁芯2的侧壁能够用于封闭第一铁芯1的整个内圈，也就是说通过第二铁芯2可以使第一铁芯1的内圈的圆周面完全封闭。通过这种配合方式，第一铁芯1上的各个定子槽11也能形成一种可降低齿槽效应的闭口式结构。
可选地，上述的第二铁芯2的一种结构为：参照图1以及图3所示，上述第二铁芯2的侧壁内表面沿周向设置有与多个定子齿12相对应的多个凹陷部21，相邻的凹陷部21之间形成与定子槽11的开口相对应的凸起部22。该结构的第二铁芯2在使用时可以装配在第一铁芯1的外圈上，以通过侧壁封闭第一铁芯1上的所有定子槽11的开口。
可选地，上述的第二铁芯2的结构还可以为：第二铁芯2的侧壁外表面沿周向设置有与多个定子齿相对应的多个凹陷部，相邻的凹陷部之间形 成与定子槽的开口相对应的凸起部。该结构的第二铁芯2在使用时适合装配于第一铁芯1的内圈上，以封闭第一铁芯1上的所有定子槽11的开口。
其中，为了利于第一铁芯1和第二铁芯2的装配，第二铁芯2上凹陷部21的数量与第一铁芯1上定子齿12的数量相同，第二铁芯2上凸起部22的数量与第一铁芯1上定子槽11的数量相同，以实现定子齿12与凹陷部21的配合以及凸起部22与定子槽11的配合，从而能将第一铁芯1和第二铁芯2良好的装配在一起。
进一步地，凹陷部21的形状与定子齿12的端部的形状相适配，定子齿12的端部与凹陷部21可以采用插合或者卡合的方式结合在一起。
在一个例子中，定子齿12的端部的形状可以呈圆弧状，凹陷部21为与之匹配的弧形槽，以使得定子齿12的端部与凹陷部21良好的配合。
其中，插合或者卡合的方式利于将第一铁芯1和第二铁芯2稳固的组合装配在一起。这些装配方式均较为简单、实现起来比较容易且不会增加制造成本。
进一步地，凸起部22的形状与定子槽11的开口的形状相适配，凸起部22覆盖在定子槽11的开口上，该凸起部22被配置为用于封闭定子槽11的开口。当定子槽11的开口被封闭后，形成了闭口定子槽，在使用中可以有效减少气隙磁阻，降低齿槽效应，利于使电机平稳的运转。
其中，凸起部22可以采用扣合、卡合等方式与定子槽11的槽口结合，以将定子槽11的槽口封闭住。
进一步地，定子槽11的形状可以根据实际需求灵活选择。在第一铁芯1上，相邻的两个定子齿12之间形成可供定子绕组穿过的定子槽11。
其中，定子槽11可以为扇形、圆形、椭圆形、U形、V形、矩形或者梯形等等。只需要保证定子槽11的槽底厚度较薄即可，例如：槽底厚度为0.3mm-0.5mmm，这样的设计可以有效减少漏磁通的现象，应用于电机后能提高电机的性能，保证电机平稳的运行。对于定子槽11的侧壁以及该槽的开口的形状本发明在此不做限制。
进一步地，第一铁芯1和第二铁芯1分别由多片定子冲片3叠压而成。这样的设计方式便于第一铁芯1和第二铁芯2的生产和加工。当第一铁芯 1和第二铁芯2装配在一起后，参照图4所示，可以看出形成层叠式的结构。
其中，形成第一铁芯1的定子冲片为环状结构，形成第二铁芯2的定子冲片也成环状结构。
其中，在进行叠压时，多片定子冲片3之间可以采用紧固件进行固定，紧固件例如可以采用铆钉。另外，多片定子冲片3之间也可以采用焊接的方式结合在一起。当然，多片定子冲片3之间也可以采用其它的方式结合在一起，本发明对此不做限制。
其中，定子冲片3可以采用厚度为0.25mm-0.5mm的冷轧硅钢片或者热轧硅钢片。这样的设计可以有效减少涡流损耗和磁滞损耗，降低铁芯发热的情况。当硅钢片的厚度较薄时，可以显著减小涡流损耗，降低铁芯发热，但是也不易过薄，否则不易加工，会增加生产成本。
另一方面，本发明还提供了一种电机定子，该电机定子包括如上所述的定子铁芯。其中，定子铁芯被配置为在第一铁芯的定子齿上预先绕制有定子绕组。本发明提供的电机定子，可以将定子绕组直接绕制在定子齿上，具有绕制方便、快速的特点。
进一步地，在第一铁芯1的至少一个定子齿12的外壁上设置有绕线槽，在该绕线槽内缠绕有定子绕组。其中，定子绕组为铜线圈绕组。
上述的电机定子可以应用于电机中，特别是可应用于永磁体同步电机中。该电机定子可以提高永磁体同步电机的气隙磁密，以及避免出现永磁体同步电机的齿槽转矩，最终能有效的提高电机性能。
又一方面，本发明还提供了一种电机，该电机包括如上所述的电机定子。
在电机中使用了上述的电机定子，从而提高了电机的整体性能。该电机可用于电动汽车或机器人等诸多领域。
根据本发明实施例的电机的其它构成部件，例如：转子等以及操作对于本领域普通技术人员而言都是已知的，本发明在此不做具体的限定。
虽然已经通过例子对本发明的一些特定实施例进行了详细说明，但是本领域的技术人员应该理解，以上例子仅是为了进行说明，而不是为了限制本 发明的范围。本领域的技术人员应该理解，可在不脱离本发明的范围和精神的情况下，对以上实施例进行修改。本发明的范围由所附权利要求来限定。

Claims (10)

  1. 一种定子铁芯，其特征在于，包括装配在一起的第一铁芯和第二铁芯；
    所述第一铁芯上沿周向分布有多个朝向所述第二铁芯伸出的且用于预先缠绕线圈的定子齿，相邻的定子齿之间形成有具有开口的定子槽，所述第一铁芯、第二铁芯被配置为：当第一铁芯和第二铁芯装配在一起后，第二铁芯的侧壁封闭各个定子槽的开口。
  2. 根据权利要求1所述的定子铁芯，其特征在于，多个所述定子齿均匀的分布在所述第一铁芯的外圈上，所述第二铁芯装配在所述第一铁芯的外部。
  3. 根据权利要求1所述的定子铁芯，其特征在于，多个所述定子齿均匀的分布在所述第一铁芯的内圈上，所述第二铁芯装配在所述第一铁芯的内部。
  4. 根据权利要求1所述的定子铁芯，其特征在于，所述第二铁芯的侧壁内表面或者外表面沿周向设置有与所述多个定子齿相对应的多个凹陷部，相邻的凹陷部之间形成与所述定子槽的开口相对应的凸起部。
  5. 根据权利要求4所述的定子铁芯，其特征在于，所述凹陷部的形状与所述定子齿的端部的形状相适配，所述定子齿的端部与所述凹陷部以插合或者卡合的方式结合在一起。
  6. 根据权利要求4所述的定子铁芯，其特征在于，所述凸起部的形状与所述定子槽的开口的形状相适配，所述凸起部覆盖在所述定子槽的开口上，所述凸起部被配置为用于封闭所述定子槽的开口。
  7. 根据权利要求1所述的定子铁芯，其特征在于，所述定子槽呈扇形、圆形、椭圆形、U形、V形、矩形或者梯形。
  8. 根据权利要求1所述的定子铁芯，其特征在于，所述第一铁芯由多片定子冲片叠压而成；所述第二铁芯由多片定子冲片叠压而成。
  9. 一种电机定子，其特征在于，包括权利要求1-8任一项所述的定子 铁芯。
  10. 一种电机，其特征在于，包括权利要求9所述的电机定子。
PCT/CN2019/106339 2018-09-18 2019-09-18 一种定子铁芯、电机定子以及电机 Ceased WO2020057529A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201811089596.1A CN109286250A (zh) 2018-09-18 2018-09-18 一种定子铁芯、电机定子以及电机
CN201811089596.1 2018-09-18

Publications (1)

Publication Number Publication Date
WO2020057529A1 true WO2020057529A1 (zh) 2020-03-26

Family

ID=65181755

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/106339 Ceased WO2020057529A1 (zh) 2018-09-18 2019-09-18 一种定子铁芯、电机定子以及电机

Country Status (2)

Country Link
CN (1) CN109286250A (zh)
WO (1) WO2020057529A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109286250A (zh) * 2018-09-18 2019-01-29 深圳市歌尔泰克科技有限公司 一种定子铁芯、电机定子以及电机

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04217831A (ja) * 1990-12-20 1992-08-07 Matsushita Electric Ind Co Ltd 電動機の分割固定子鉄心
US20060214533A1 (en) * 2005-03-25 2006-09-28 Sanyo Denki Co., Ltd. Permanent magnet rotary motor
JP2006288042A (ja) * 2005-03-31 2006-10-19 Toshiba Corp 永久磁石形モータ
CN203445707U (zh) * 2013-07-08 2014-02-19 珠海格力电器股份有限公司 定子冲片、定子铁芯及电机
CN109286250A (zh) * 2018-09-18 2019-01-29 深圳市歌尔泰克科技有限公司 一种定子铁芯、电机定子以及电机

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2845941B2 (ja) * 1989-05-19 1999-01-13 株式会社日立製作所 電機固定子
US5089730A (en) * 1990-05-18 1992-02-18 North American Philips Corporation Low noise DC electric motor
AU2002220912A1 (en) * 2000-12-06 2002-06-18 Newage International Limited Electrical machine magnetic cores
FR3030924B1 (fr) * 2014-12-19 2018-02-23 Valeo Systemes De Controle Moteur Machine electrique
CN205178812U (zh) * 2015-05-08 2016-04-20 德昌电机(深圳)有限公司 风机及其单相外转子无刷电机

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04217831A (ja) * 1990-12-20 1992-08-07 Matsushita Electric Ind Co Ltd 電動機の分割固定子鉄心
US20060214533A1 (en) * 2005-03-25 2006-09-28 Sanyo Denki Co., Ltd. Permanent magnet rotary motor
JP2006288042A (ja) * 2005-03-31 2006-10-19 Toshiba Corp 永久磁石形モータ
CN203445707U (zh) * 2013-07-08 2014-02-19 珠海格力电器股份有限公司 定子冲片、定子铁芯及电机
CN109286250A (zh) * 2018-09-18 2019-01-29 深圳市歌尔泰克科技有限公司 一种定子铁芯、电机定子以及电机

Also Published As

Publication number Publication date
CN109286250A (zh) 2019-01-29

Similar Documents

Publication Publication Date Title
US9806589B2 (en) Basket-type rotor production method and basket-type rotor
WO2009084251A1 (ja) 誘導電動機の回転子及び誘導電動機及び圧縮機及び送風機及び空気調和機
US6954018B2 (en) Rotor of line start permanent magnet motor and manufacturing method thereof
US10153673B2 (en) Production method for rotating electrical machine
JP2012120326A (ja) 磁石埋め込み型回転子、電動機及び電動機の組立方法
JP2015163006A (ja) 回転電機及びその製造方法
CN102522858A (zh) 分瓣式磁悬浮电机及其装配方法
CN208939682U (zh) 一种闭口槽定子铁芯、电机定子以及电机
CN205407440U (zh) 转子铁芯及具有其的永磁同步电机
WO2020057529A1 (zh) 一种定子铁芯、电机定子以及电机
CN208939676U (zh) 一种定子铁芯、电机定子以及电机
CN106374652A (zh) 转子铁芯、转子及自起动永磁同步电机
EP1553685A2 (en) Stator for reciprocating motor
JP2005051929A (ja) 電動機
KR20020075993A (ko) 동기모터의 회전자 및 그 제조방법
CN202455171U (zh) 分瓣式磁悬浮电机
KR20220101709A (ko) 회전 전기 기계
JP2000152528A (ja) 多極コア及びそれを用いたインナー型電機子、並びにその製造方法
CN209282943U (zh) 一种闭口槽定子铁芯、电机定子以及电机
CN210957940U (zh) 一种组合式电机铁芯结构
JP2019097258A (ja) 回転電機用磁性くさび、回転電機用磁性くさびの製造方法、および、回転電機
JP2012120353A (ja) 回転電機用ロータ
CN209419336U (zh) 转子铁芯以及具有该铁芯的内外转子铁芯、转子、电机
CN207664726U (zh) 一种电机定子冲片结构
CN209150817U (zh) 一种定子、转子冲片及电机

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: 19862147

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: 19862147

Country of ref document: EP

Kind code of ref document: A1