WO2020258758A1 - 定子铁芯及电机 - Google Patents

定子铁芯及电机 Download PDF

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Publication number
WO2020258758A1
WO2020258758A1 PCT/CN2019/125363 CN2019125363W WO2020258758A1 WO 2020258758 A1 WO2020258758 A1 WO 2020258758A1 CN 2019125363 W CN2019125363 W CN 2019125363W WO 2020258758 A1 WO2020258758 A1 WO 2020258758A1
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Prior art keywords
stator
tooth
teeth
motor
axial direction
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PCT/CN2019/125363
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English (en)
French (fr)
Inventor
陈东锁
高晓峰
李庆
Original Assignee
珠海凯邦电机制造有限公司
珠海格力电器股份有限公司
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Publication of WO2020258758A1 publication Critical patent/WO2020258758A1/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
    • H02K1/145—Stator cores with salient poles having an annular coil, e.g. of the claw-pole type
    • 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
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2793—Rotors axially facing stators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
    • H02K2201/12—Transversal flux machines

Definitions

  • This application relates to the field of motor technology, and more specifically to a stator core and a motor.
  • the direct current of household appliances fans has gradually become a trend.
  • the brushless motors used in the industry are all radial magnetic field structures (that is, the magnetic field is distributed along the radial direction of the rotor) and the motor power density is low, that is, Low utilization rate. Due to the rising market prices of motor raw materials, high-power density motors have become the development trend of brushless DC motors.
  • the axial flux motor is gradually popularized and applied with its performance advantages.
  • the axial flux motor has the characteristics of high efficiency and high power density, its magnetic circuit structure leads to the complicated production process of the stator punched iron core, and there are bottlenecks such as winding, which restricts the popularization and application of the axial flux motor.
  • the teeth of the stator teeth of the traditional axial motor are evenly distributed along the circumference, and the slots of the two adjacent stator teeth have an included angle structure, that is, the inner slot is small, and the outer slot is large, resulting in uneven distribution of the motor cogging and the teeth
  • the large slot torque affects the performance of the motor.
  • the purpose of this application is to provide a stator core and a motor, which can reduce the cogging torque of the motor and improve the performance of the motor.
  • the technical solution adopted in this application is to provide a stator core including a stator yoke and a plurality of stator teeth, the plurality of stator teeth are arranged at intervals along the circumference of the stator yoke, and the plurality of stator teeth are located in the stator yoke along the axial
  • the plurality of stator teeth are divided into a plurality of stator tooth pairs, the minimum distance between two stator teeth in each stator tooth pair is A, and the minimum distance between two adjacent stator tooth pairs is B , And A ⁇ B.
  • each stator tooth is provided with a through slot
  • the stator yoke is provided with a connecting portion equal to the number of stator teeth, and each stator tooth is inserted into the corresponding connecting portion through the through slot.
  • the through slot extends axially to the end surface of the one end of each stator tooth.
  • Both sides of the through groove are protrusions, and both sides of the connecting portion are open grooves, and the protrusions are inserted into the open groove.
  • the protrusion extends in the axial direction, the opening slot on one side of the connecting portion extends radially toward the outer surface of the stator yoke, and the opening slot on the other side of the connecting portion extends radially toward the stator
  • the inner side of the yoke extends.
  • Each stator tooth includes a tooth portion extending in the axial direction and a tooth shoe portion provided at one end of the tooth portion in the axial direction.
  • the tooth shoe portion extends in a direction perpendicular to the axial direction. Both ends extend from the tooth part, and the through slot is provided at the other end of the tooth part in the axial direction.
  • the two stator teeth in each stator tooth pair are radially symmetrical.
  • the application also provides a motor, which includes the aforementioned stator core.
  • the motor further includes a rotor, and the rotor is arranged on a side of the stator teeth that is close to the tooth shoe part in the axial direction.
  • the rotor includes a magnetic guide disk and a permanent magnet, and the permanent magnet is located between the tooth shoe part and the magnetic guide disk.
  • the permanent magnet is a magnetic ring or a magnetic tile.
  • This application adopts the stator yoke and stator tooth separation structure, and the stator yoke is laminated in the axial direction, and the stator teeth are laminated in the radial direction.
  • the motor performance and power are realized The density is increased; and the stator yoke is laminated in the axial direction, and the stator teeth are laminated in the radial direction.
  • the simplified production of the stator core is realized (the traditional axial motor, the stator core needs to be wound in the circumferential direction Winding, the technology is currently a technical bottleneck, because the circumference of the core of each winding of the wound core is different, it is difficult to implement the groove structure, size and other processes).
  • stator yoke and stator tooth separation structure is adopted in this application.
  • the winding is not affected by the iron core structure and can be individually wound. Install the wound windings on the corresponding stator teeth, greatly simplifying the winding process and current technical bottlenecks.
  • a ⁇ B the cogging torque of the motor can be reduced, the magnetic flux leakage between teeth and tooth pairs can be reduced, and the performance of the motor can be improved.
  • Fig. 1 is a structural diagram of a motor in an embodiment of the application.
  • Figure 2 is an exploded view of the motor in an embodiment of the application.
  • Figure 3 is a schematic diagram of the stator yoke separated from the stator teeth in an embodiment of the application.
  • Figure 4 is a structural diagram of stator teeth in an embodiment of the application.
  • Fig. 5 is a structural diagram of a stator yoke in an embodiment of the application.
  • Fig. 6 is a plan view of the stator yoke and stator teeth connected in the embodiment of the application.
  • Figure 7 is a side view of the motor in the embodiment of the application.
  • the motor proposed in the implementation of this application is an axial flux motor.
  • the motor includes a stator and a rotor 4, and the stator includes a stator core and a stator winding 3.
  • the stator core includes a stator yoke 1 and a plurality of stator teeth 2 with stator windings 3 wound on the stator teeth 2.
  • the direction X represents the axial direction
  • the direction Y represents the radial direction.
  • the circumferential, axial and radial directions mentioned below refer to the circumferential direction of the stator yoke, the axial direction of the stator yoke and the radial direction of the stator yoke, which are different from the circumferential direction of the stator yoke of the conventional motor, the axial direction of the stator yoke and the stator yoke.
  • the radial definition of the yoke is the same.
  • the stator yoke 1 is composed of a plurality of stator yoke punches superimposed in the axial direction.
  • Each stator tooth 2 is composed of a plurality of stator tooth punches of the same shape superimposed in the radial direction.
  • the plurality of stator teeth 2 are along the circumference of the stator yoke 1.
  • the stator teeth 2 are arranged at intervals, and a plurality of stator teeth 2 are located on one side of the stator yoke 1 in the axial direction.
  • the stator yoke and stator teeth are separated, and the stator yoke is laminated in the axial direction, and the stator teeth are laminated in the radial direction.
  • stator core technology Through the combined axial and radial hybrid stator core technology, the motor performance and power density are improved. Lifting; and the stator yoke is laminated in the axial direction, and the stator teeth are laminated in the radial direction. Through the cooperation of the two, the simplified production of the stator core is realized (the traditional axial motor, the stator core needs to be wound in the circumferential direction, The process is currently a technical bottleneck, because the perimeter of the core of each coil of the wound core is different, and it is difficult to implement the groove structure, size and other processes). In addition, the grooves of the traditional axial magnetic field iron core are radially distributed, and automatic winding and production cannot be realized.
  • the stator yoke and stator tooth separation structure is adopted in this application. The winding is not affected by the iron core structure and can be individually wound. Install the wound windings on the corresponding stator teeth, greatly simplifying the winding process and current technical bottlenecks.
  • each stator tooth 2 is provided with a through slot 211, and the stator yoke 1 is provided with a connecting portion 11 equal to the number of stator teeth 2.
  • the tooth 2 is inserted into the corresponding connecting portion 11 through the through slot 211. Since the depth of the through-slot can be set in advance, the depth of insertion when the through-slot is inserted into the connecting part is easy to control, and thus the height of the stator teeth during installation is easy to control.
  • each stator tooth is provided with a through slot
  • the corresponding stator yoke is provided with 12 connecting parts, and one through slot corresponds to one connecting part.
  • the plurality of stator teeth are divided into a plurality of stator tooth pairs, and each stator tooth pair is composed of two stator teeth.
  • the two stator teeth in each stator tooth pair are radially symmetrical.
  • the two stator teeth are arranged close together.
  • the through slot 211 extends in the axial direction to the end surface of one end of each stator tooth 2.
  • protrusions 212 On both sides of the through slot 211 are protrusions 212, which extend in the axial direction, so that the through slot 211 The protrusions 212 on both sides of the through groove 211 form a "concave" structure.
  • the two sides of the connecting portion 22 are open slots 12, and the protrusions 212 are inserted into the open slots 12.
  • the open slot 12 on one side of the connecting portion 11 extends radially toward the outer surface of the stator yoke 1, and the other side of the connecting portion 11
  • the opening slots 12 on the side extend radially toward the inner surface of the stator yoke 1, so that the connecting portion 11 and the opening slots 12 on both sides of the connecting portion 11 form an "I" structure.
  • the connecting portion 11 is a square block, and the two end surfaces of the connecting portion 11 in the axial direction are flush with the two end surfaces of the stator yoke 1 in the axial direction.
  • the "concave" structure and the "I” structure connect the stator yoke and the stator teeth to realize the magnetic circuit connection between the stator yoke and the stator teeth.
  • each stator tooth 2 includes a tooth portion 21 extending in the axial direction and a tooth shoe portion 22 provided at one end of the tooth portion 21 in the axial direction. Both ends of the shoe portion 22 extend out of the tooth portion 21, and the through groove 211 is provided at the other end of the tooth portion 21 in the axial direction.
  • the end surface of the tooth shoe portion 22 in the axial direction is a plane, and the two sides of the tooth shoe portion 22 are rounded transitions.
  • the teeth of the two stator teeth in each pair of stator teeth are parallel and the tooth shoes are parallel, and the spacing between the two stator teeth in each pair of stator teeth is the same.
  • the minimum distance between two stator teeth 2 in each stator tooth pair 5 is A
  • the minimum distance between two adjacent stator tooth pairs 5 is B
  • a ⁇ B which can be reduced
  • the cogging torque of the motor reduces the magnetic flux leakage between the teeth and between the teeth to improve the performance of the motor.
  • a stator tooth pair 5 is provided on each side of the stator yoke 1.
  • the inscribed circle radius of the stator yoke 1 is H, and the The width of the tooth shoe is L, and L satisfies the following formula:
  • A B, and the value of L is between 0.5-1 mm.
  • the rotor 4 is arranged on the axial side of the stator teeth 2 close to the tooth shoe 22.
  • the rotor 4 includes a conductive disk 41 and a permanent magnet 42.
  • the permanent magnet 42 is a magnetic ring or a magnetic tile.
  • the permanent magnet 42 is located between the shoe 22 and the magnetic disk 41.
  • the permanent magnet 42 is facing the tooth shoe 22, and the surfaces of the permanent magnet 42 and the tooth shoe 22 facing each other are parallel planes, that is, the permanent magnet 42 and the tooth shoe 22 are in the axial direction.
  • the equal height air gap ⁇ , equal height air gap can ensure that the cogging torque and torque ripple of the motor are smaller, and the performance of the motor can be higher at the same time, mainly to ensure the performance of the motor while improving the stability of the motor operation And reliability.
  • the permanent magnet 42 is magnetized sinusoidally in the axial direction and has a sector shape on each pole.
  • the number of slots per pole per phase of the motor is q
  • the number of slots of the motor is Z
  • the number of poles of the motor is 2P
  • the number of phases of the motor is m
  • the motor satisfies the following formula:
  • the stator yoke can be of a monolithic structure, a straight bar structure and a block structure.
  • the number of stator slots and the number of poles of the motor are preferably even numbers.
  • the installation process of the motor in this application is as follows: the punching die is laminated to form the stator teeth and the stator yoke; the ring-shaped concentrated winding is wound by the winding equipment; each pair of windings are respectively sleeved on the teeth of each stator tooth pair; Each stator tooth pair is sequentially mounted on the corresponding stator yoke and fixed; the stator is solidified by injection molding, potting and other processes to form the stator; the magnetic ring or sector-shaped magnetic tile is glued to the disk, or the magnetic The ring or magnetic steel and the guide disk are injection molded to form a rotor; the rotor is assembled on the corresponding position of the stator to form a motor.

Abstract

本申请公开了一种定子铁芯及电机，定子铁芯包括定子轭和多个定子齿，多个定子齿沿定子轭的周向间隔设置，且多个定子齿位于所述定子轭沿轴向的一侧，所述多个定子齿分成多个定子齿对，每个定子齿对中的两个定子齿之间的最小间距为A，相邻两个定子齿对之间的最小间距为B，且A≤B。本申请中由于A≤B，可以降低电机齿槽转矩、减小齿间及齿对间漏磁，提升电机性能。

Description

定子铁芯及电机
本申请要求于2019年6月27日提交至中国国家知识产权局、申请号为201910568777.0、发明名称为“定子铁芯及电机”的专利申请的优先权。
技术领域
本申请涉及电机技术领域，更具体地说是涉及一种定子铁芯及电机。
背景技术
随着政府节能政策导向、市场发展需求，家用电器风机直流化逐步成为趋势，目前行业采用无刷电机均为径向磁场结构(即磁场沿转子径向分布)且电机功率密度较低，即材料利用率低。受电机原材料市场价格上涨，高功率密度电机成为无刷直流电机发展趋势。轴向磁通电机以其性能优势，逐渐被推广应用。
虽然轴向磁通电机具有高效率、高功率密度的特点，但其磁路结构导致定子冲片铁芯生产工艺复杂、存在绕线等瓶颈问题，制约了轴向磁通电机的推广应用。传统的轴向电机的定子齿的齿部沿圆周均布，相邻两个定子齿的槽口呈夹角结构，即内侧槽口小，外侧槽口大，导致电机齿槽分布不均匀且齿槽转矩大，影响电机性能。
发明内容
本申请的目的是提供一种定子铁芯及电机，可以降低电机齿槽转矩，提升电机性能。
本申请采用的技术方案为：提供一种定子铁芯，包括定子轭和多个定子齿，多个定子齿沿定子轭的周向间隔设置，且多个定子齿位于所述定子轭沿轴向的一侧，所述多个定子齿分成多个定子齿对，每个定子齿对中的两个定子齿之间的最小间距为A，相邻两个定子齿对之间的最小间距为B，且A≤B。
每个定子齿的一端设有通槽，所述定子轭上设有与定子齿数量相等的连接部，所述每个定子齿通过所述通槽插装在对应的连接部上。
所述通槽沿轴向向所述每个定子齿的所述一端的端面延伸。
所述通槽的两侧为凸起，所述连接部的两侧为开口槽，所述凸起插装在所述开口槽内。
所述凸起沿轴向延伸，所述连接部的一侧的开口槽沿径向向所述定子轭的外侧面延伸，所述连接部的另一侧的开口槽沿径向向所述定子轭的内侧面延伸。
每个定子齿包括沿轴向延伸的齿部和设于所述齿部沿轴向的一端的齿靴部，所述齿靴部沿垂直于轴向的方向延伸，且所述齿靴部的两端均延伸出所述齿部，所述通槽设于所述齿部沿轴向的另一端。
每个定子齿对中的两个定子齿径向对称。
本申请还提供一种电机，包括上述所述的定子铁芯。
所述电机还包括转子，所述转子设于所述定子齿沿轴向的靠近所述齿靴部的一侧。
所述转子包括导磁盘和永磁体，所述永磁体位于所述齿靴部与所述导磁盘之间。
所述永磁体为磁环或磁瓦。
本申请采用定子轭、定子齿分离结构，且定子轭沿轴向方向叠片，定子齿沿径向方向叠片，通过轴向与径向混合组合式定子铁芯技术，实现了电机性能及功率密度的提升；而且定子轭沿轴向方向叠片，定子齿沿径向方向叠片，通过两者相配合，实现定子铁芯的简化生产(传统轴向电机，定子铁芯需采用周向卷绕，工艺上目前是技术瓶颈，因为卷绕式铁芯每一圈的铁芯周长都不相同，对槽型结构、尺寸等工艺实施难以实现)。另外，传统轴向磁场铁芯的槽型呈径向分布，无法实现自动化绕线及生产，本申请采用定子轭、定子齿分离结构，绕线可不受铁芯结构影响，可以实现单独绕线，将绕好的绕组装入对应的定子齿上，大幅简化绕线工艺及当前技术瓶颈。由于A≤B，可以降低电机齿槽转矩、减小齿间及齿对间漏磁，提升电机性能。
附图说明
构成本申请的一部分的说明书附图用来提供对本申请的进一步理解，本申请的示意性实施例及其说明用于解释本申请，并不构成对本申请的不当限定。在附图中：
图1为本申请实施例中电机的结构图。
图2为本申请实施例中电机的爆炸图。
图3为本申请实施例中定子轭与定子齿拆分开的示意图。
图4为本申请实施例中定子齿的结构图。
图5为本申请实施例中定子轭的结构图。
图6为本申请实施例中定子轭与定子齿连接后的平面图。
图7为本申请实施例中电机的侧面结构图。
具体实施方式
如图1和图2所示，本申请实施中提出的电机，该电机为轴向磁通电机，该电机包括定子和转子4，定子包括定子铁芯和定子绕组3。定子铁芯包括定子轭1和多个定子齿2，定子齿2上缠绕有定子绕组3。图中，方向X代表轴向，方向Y代表径向。
下面所说的周向、轴向和径向均指的是定子轭的周向、定子轭的轴向和定子轭的径向，与常规电机定子轭的周向、定子轭的轴向和定子轭的径向定义相同。
定子轭1由沿轴向叠加的多个定子轭冲片组成，每个定子齿2由沿径向叠加的多个形状相同的定子齿冲片组成，多个定子齿2沿定子轭1的周向间隔设置，且多个定子齿2位于定子轭1沿轴向的一侧。采用定子轭、定子齿分离结构，且定子轭沿轴向方向叠片，定子齿沿径向方向叠片，通过轴向与径向混合组合式定子铁芯技术，实现了电机性能及功率密度的提升；而且定子轭沿轴向方向叠片，定子齿沿径向方向叠片，通过两者相配合，实现定子铁芯的简化生产(传统轴向电机，定子铁芯需采用周向卷绕，工艺上目前是技术瓶颈，因为卷绕式铁芯每一圈的铁芯周长都不相同，对槽型结构、尺寸等工艺实施难以实现)。另外，传统轴向磁场铁芯的槽型呈径向分布，无法实现自动化绕线及生产，本申请采用定子轭、定子齿分离结构，绕线可不受铁芯结构影响，可以实现单独绕线，将绕好的绕组装入对应的定子齿上，大幅简化绕线工艺及当前技术瓶颈。
如图3所示，为了容易控制定子齿在安装时的高度，每个定子齿2的一端设有通槽211，定子轭1上设有与定子齿2数量相等的连接部11，每个定子齿2通过通槽211插装在对应的连接部11上。由于通槽的深度可预先设置，这样再将通槽插到连接部上时插入的深度容易控制，进而容易控制定子齿在安装时的高度。
本实施例中，共有12个定子齿，每个定子齿上设有一个通槽，对应的定子轭上设有12个连接部，一个通槽对应一个连接部。
本实施例中，多个定子齿分成多个定子齿对，每个定子齿对由两个定子齿组成，每个定子齿对中的两个定子齿径向对称，每个定子齿对中的两个定子齿靠拢设置。
如图4和图5所示，通槽211沿轴向向每个定子齿2的一端的端面延伸，通槽211的两侧为凸起212，凸起212沿轴向延伸，这样通槽211与该通槽211两侧的凸起212形成“凹”字结构。连接部22的两侧为开口槽12，凸起212插装在开口槽12内，连接部11的一侧的开口槽12沿径向向定子轭1的外侧面延伸，连接部11的另一侧的开口槽12沿径向向定子轭1的内侧面延伸，这样连接部11与连接部11两侧的开口槽12形成“工”字结构。本实施例中，连接部11为方形块，连接部11沿轴向的两个端面与定子轭1沿轴向的两个端面平齐。“凹”字结构和“工”字结构将定子轭与定子齿连接，实现定子轭和定子齿的磁路连通。
如图2至图4所示，每个定子齿2包括沿轴向延伸的齿部21和设于齿部21沿轴向的一端的齿靴部22，齿靴部22沿垂直于轴向的方向延伸，且齿靴部22的两端均延伸出齿部21，通槽211设于齿部21沿轴向的另一端。齿靴部22沿轴向的端面为平面，齿靴部22的两边为圆角过渡。
每个定子齿对中的两个定子齿的齿部平行、齿靴部平行，每个定子齿对中的两个定子齿之间的间距是相同的。
如图6所示，每个定子齿对5中的两个定子齿2之间的最小间距为A，相邻两个定子齿对5之间的最小间距为B，且A≤B，可以降低电机齿槽转矩、减小齿间及齿对间漏磁，提升电机性能。优选A＝B，效果最好。
每个定子齿对对应的圆弧夹角β＝360°/定子齿对数。
定子轭1呈正多边形(正多边形的变数＝定子齿对数)，定子轭1的每个边上设置一个定子齿对5，定子轭1的内切圆半径为H，且每个定子齿对的齿靴部的宽度为L，L满足以下公式：
Figure PCTCN2019125363-appb-000001
一般地，优选A＝B，L取值介于0.5-1mm之间为最优。
如图1和图2所示，转子4设于定子齿2沿轴向的靠近齿靴部22的一侧，转子4包括导磁盘41和永磁体42，永磁体42为磁环或者磁瓦，永磁体42位于齿靴部22与磁盘41之间。
如图7所示，永磁体42正对齿靴部22，且永磁体42与齿靴部22彼此正对的面为平行的平面，即永磁体42与齿靴部22在轴向方向上为等高气隙δ，等高气隙能够保证电机齿槽转矩及转矩脉动更小，同时可以保证电机性能更高，主要是为了在保证电机性能的同时，还能提升电机运行的稳定性和可靠性。
永磁体42沿轴向正弦充磁且每极为扇形，扇形的角度为α，α＝360°/2P(2P为电机的极数)，相邻的两个扇形的极性相反。
电机的每极每相槽数为q，电机的槽数为Z，电机的极数为2P，电机的相数为m，且电机满足以下公式：
Figure PCTCN2019125363-appb-000002
定子轭可以整体结构、直条形结构以及拼块形结构。定子槽数及电机的极数优先均为偶数。
本申请中电机的安装过程为：冲压模具将冲片叠压成定子齿及定子轭；利用绕线设备绕制环形集中绕组；将每对绕组分别套装在每个定子齿对的齿部；将每个定子齿对依次装入对应的定子轭上，固定；采用注塑、灌封等工艺固化成型，形成定子；将磁环或扇形磁瓦利用胶水粘贴到磁盘上，或利用尼龙等塑料将磁环或磁钢与导磁盘注塑为一体形成转子；将转子装配在定子对应位置上，形成电机。
以上的具体实施例仅用以举例说明本申请的构思，本领域的普通技术人员在本申请的构思下可以做出多种变形和变化，这些变形和变化均包括在本申请的保护范围之内。

Claims (10)

  1. 一种定子铁芯，包括定子轭(1)和多个定子齿(2)，多个定子齿(2)沿定子轭(1)的周向间隔设置，且多个定子齿(2)位于所述定子轭(1)沿轴向的一侧，所述多个定子齿(2)分成多个定子齿对，其特征在于，每个定子齿对中的两个定子齿(2)之间的最小间距为A，相邻两个定子齿对之间的最小间距为B，且A≤B。
  2. 根据权利要求1所述的定子铁芯，其特征在于，每个定子齿(2)的一端设有通槽(211)，所述定子轭(1)上设有与定子齿(2)数量相等的连接部(11)，所述每个定子齿(2)通过所述通槽(211)插装在对应的连接部(11)上。
  3. 根据权利要求2所述的定子铁芯，其特征在于，所述通槽(211)沿轴向向所述每个定子齿(2)的所述一端的端面延伸。
  4. 根据权利要求3所述的定子铁芯，其特征在于，所述通槽(211)的两侧为凸起(212)，所述连接部(11)的两侧为开口槽(12)，所述凸起(212)插装在所述开口槽(12)内。
  5. 根据权利要求4所述的定子铁芯，其特征在于，所述凸起(212)沿轴向延伸，所述连接部(11)的一侧的开口槽(12)沿径向向所述定子轭(1)的外侧面延伸，所述连接部(11)的另一侧的开口槽(12)沿径向向所述定子轭(1)的内侧面延伸。
  6. 根据权利要求2所述的定子铁芯，其特征在于，每个定子齿(2)包括沿轴向延伸的齿部(21)和设于所述齿部(21)沿轴向的一端的齿靴部(22)，所述齿靴部(22)沿垂直于轴向的方向延伸，且所述齿靴部(22)的两端均延伸出所述齿部(21)，所述通槽(211)设于所述齿部(21)沿轴向的另一端。
  7. 一种电机，其特征在于，包括权利要求6所述的定子铁芯。
  8. 根据权利要求7所述的电机，其特征在于，所述电机还包括转子(4)，所述转子(4)设于定子齿(2)沿轴向的靠近齿靴部(22)的一侧。
  9. 根据权利要求8所述的电机，其特征在于，所述转子(4)包括导磁盘(41)和永磁体(42)，所述永磁体(42)位于所述齿靴部(22)与所述导磁盘(41)之间。
  10. 根据权利要求9所述的电机，其特征在于，所述永磁体(42)为磁环或磁瓦。
PCT/CN2019/125363 2019-06-27 2019-12-13 定子铁芯及电机 WO2020258758A1 (zh)

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