WO2022227358A1 - 一种盘式永磁电机 - Google Patents

一种盘式永磁电机 Download PDF

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Publication number
WO2022227358A1
WO2022227358A1 PCT/CN2021/115564 CN2021115564W WO2022227358A1 WO 2022227358 A1 WO2022227358 A1 WO 2022227358A1 CN 2021115564 W CN2021115564 W CN 2021115564W WO 2022227358 A1 WO2022227358 A1 WO 2022227358A1
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WIPO (PCT)
Prior art keywords
rotor
stator
permanent magnet
disk
assembly
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PCT/CN2021/115564
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English (en)
French (fr)
Inventor
肖锐
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Zhongshan Broad Ocean Motor Co Ltd
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Zhongshan Broad Ocean Motor Co Ltd
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Application filed by Zhongshan Broad Ocean Motor Co Ltd filed Critical Zhongshan Broad Ocean Motor Co Ltd
Publication of WO2022227358A1 publication Critical patent/WO2022227358A1/zh
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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
    • H02K1/16—Stator cores with slots for windings
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility

Definitions

  • the utility model relates to a disk type permanent magnet motor.
  • the axial magnetic field disk type permanent magnet synchronous motor in the prior art is being used more and more because of its high power density, light weight and small size, for example, it is applied to the traction motor of new energy vehicles.
  • the rotor magnetic steel arrangement mostly adopts the surface-mounted magnetic steel structure axial magnetic field, and a small part adopts the SPOKE concentrated magnetic pole structure, but the current disc motor has the following problems: 1.
  • the stator of the disc motor is flushed
  • the plates generally use closed slots.
  • the disc motor with this structure has a low utilization rate of silicon steel, which leads to a high overall material cost of the motor. 2.
  • the SPOKE rotor structure is actually used.
  • the disc with this rotor structure Due to the high magnetic density of the air gap due to the magnetic concentration effect, the disc with this rotor structure is used.
  • the torque pulse of the type motor is high; 3.
  • the rotor core of the motor with the ordinary SPOKE structure is installed by vertical lamination, the punching piece is easy to fall off and the air gap is difficult to guarantee.
  • This utility model is to provide a disc type permanent magnet motor, which solves the problem that in the prior art, the stator punch generally adopts closed slots, and the slot width design is unreasonable. high technical issues.
  • a further object of the present utility model is to provide a disk type permanent magnet motor, which solves the technical problem of high torque pulsation due to the high magnetic density of the air gap due to the magnetic concentration effect in practical use of the SPOKE rotor structure in the prior art.
  • the third object of the present utility model is to provide a disk-type permanent magnet motor, which solves the technical problem that the SPOKE rotor structure is adopted in the prior art. question.
  • the purpose of this utility model is to provide a disk-type permanent magnet motor, which includes a stator assembly and a rotor assembly.
  • the stator assembly and the rotor assembly are arranged up and down to form an axial magnetic coupling.
  • the stator assembly includes a stator core, end insulation and coil windings.
  • the iron core includes a yoke and a plurality of teeth protruding axially from the yoke.
  • a wire insertion slot is formed between two adjacent tooth parts, and n wire insertion slots are arranged.
  • the outer diameter of the stator core is D, and the teeth
  • the coil winding is wound after the installation end is insulated;
  • the rotor assembly includes a rotor disk, several rotor iron cores and several permanent magnets, and several rotor iron cores are installed on the rotor disk at circumferential intervals, between two adjacent rotor iron cores
  • a permanent magnet is embedded, which is characterized in that the wire-embedding slot is in the form of an open slot, that is, the width of the wire-embedding slot is consistent with the slot width H of the wire-embedding slot, and the slot width of the wire-embedding slot satisfies: H ⁇ sin(360°/2n)*D.
  • an angle ⁇ is formed between the permanent magnet and the radial line of the rotor assembly.
  • the value of the included angle ⁇ ranges from 2.5° to 7.5°.
  • the included angle ⁇ is 5°.
  • the axial cross-sectional shape of the permanent magnet is a rectangle or a trapezoid.
  • the stator assembly is installed in a stator disk, a bearing seat is protruded from the middle of the bottom plate of the stator disk, the bearing is embedded in the bearing seat, the yoke of the stator iron core forms a central hole, and the bearing seat passes through the central hole, A rotating shaft is protruded from the middle of the bottom end face of the rotor disk, and the rotating shaft is inserted into the bearing, so that the rotor assembly and the stator assembly form an integral motor.
  • the axial cross-sectional shape of the permanent magnet is a trapezoid
  • the axial cross-sectional shape of the rotor iron core is square
  • the rotor iron core is formed by horizontally stacking a plurality of rotor punching pieces.
  • the stator disk includes a bottom plate and a bearing seat is protruded from the middle of the bottom plate of the stator disk, the bearing seat is provided with a through hole, and a plurality of circumferentially spaced first mounting holes are opened on the bottom plate on the periphery of the bearing seat. The screws pass through the first mounting holes and are fastened on the stator iron core, so that the stator assembly and the stator disc are mounted and connected together.
  • the protruding peripheral annular baffle at the peripheral edge of the bottom plate, the bottom plate, the bearing seat and the peripheral annular baffle form an annular accommodating cavity, and the stator assembly is embedded in the annular accommodating cavity.
  • a plurality of second mounting holes are provided on the rotor disk on the periphery of the rotating shaft, and the second screws are passed through the second mounting holes to be fastened to the rotor iron core, so that the rotor disk, several pieces of rotor iron core and several pieces of permanent magnets are locked together into a whole.
  • load mounting screw holes arranged in the circumferential direction are also provided on the top surface of the rotor disk.
  • the shaft is hollow.
  • a disk-type permanent magnet motor of the present invention includes a stator assembly and a rotor assembly.
  • the upper and lower layouts of the stator assembly and the rotor assembly form an axial magnetic coupling.
  • the stator assembly includes a stator iron core, end insulation and coil windings.
  • the stator iron The core includes a yoke and a number of teeth protruding axially from the yoke.
  • a wire insertion slot is formed between two adjacent tooth parts. There are n wire insertion slots.
  • the outer diameter of the stator core is D, and the teeth are installed.
  • the rotor assembly includes a rotor disk, several rotor iron cores and several permanent magnets, and several rotor iron cores are installed on the rotor disk at circumferential intervals, and two adjacent rotor iron cores are embedded between A permanent magnet is installed, which is characterized in that: the wire insertion slot adopts the form of an open slot, that is, the width of the wire insertion slot is consistent with the slot width H of the wire insertion slot, and the slot width of the wire insertion slot satisfies: H ⁇ sin (360°/2n)*D; that is, the stator core adopts an open slot structure, and the slot width is designed according to the size of the stator core, which can greatly reduce the amount of stator silicon steel, thereby reducing the manufacturing cost.
  • Fig. 1 is the three-dimensional structure schematic diagram of the disk-type permanent magnet motor provided for the first embodiment of the present utility model
  • FIG. 2 is a schematic diagram of an exploded structure of a disk-type permanent magnet motor provided for Embodiment 1 of the present utility model;
  • FIG. 3 is a schematic front view of the structure of the disk-type permanent magnet motor provided by the first embodiment of the present utility model
  • Fig. 4 is the sectional structure schematic diagram of A-A provided for Fig. 3;
  • FIG. 5 is a schematic three-dimensional structure diagram of a stator core provided in Embodiment 1 of the present utility model
  • Fig. 6 is the top view of the stator core provided for the first embodiment of the present utility model
  • FIG. 7 is a partial structural schematic diagram of the wire-embedding slot of the stator core provided by Embodiment 1 of the present utility model;
  • Embodiment 8 is a schematic structural diagram of a permanent magnet and a rotor core provided in Embodiment 1 of the present utility model;
  • FIG. 9 is a perspective view of the rotor assembly provided by the first embodiment of the present invention.
  • FIG. 10 is a top view of the rotor assembly provided by the first embodiment of the present invention.
  • Fig. 11 is the B-B sectional view of Fig. 10;
  • FIG. 12 is a schematic three-dimensional structure diagram of a permanent magnet and a rotor core provided by Embodiment 2 of the present utility model;
  • FIG. 13 is a schematic three-dimensional structural diagram of the rotor core provided in the second embodiment of the present invention.
  • the present embodiment provides a disk-type permanent magnet motor, including a stator assembly 10 and a rotor assembly 20.
  • the stator assembly 10 and the rotor assembly 20 are arranged up and down to form an axial magnetic coupling, and the stator assembly 10 It includes a stator core 1, end insulation 2 and coil windings 3.
  • the stator core 1 includes a yoke 11 and a number of teeth 12 axially protruding from the yoke 11, and an inlay is formed between two adjacent teeth 12.
  • the rotor assembly 20 includes a rotor disk 5, a number of rotor iron cores 6 and a number of permanent magnets 7, a number of rotor cores 6 are installed on the rotor disk 5 at circumferential intervals, and a permanent magnet 7 is embedded between two adjacent rotor cores 6.
  • the form of the opening slot that is, the width of the wire insertion slot 4 is consistent with the width H of the slot 41 of the wire insertion slot 4, and the width of the slot 41 of the wire insertion slot 4 satisfies: H ⁇ sin(360°/2n)*D .
  • the stator iron core 1 adopts an open slot structure, and the width of the slot 41 is designed according to the size of the stator iron core 1, which can greatly reduce the amount of stator silicon steel, thereby reducing the manufacturing cost.
  • an angle ⁇ is formed between the center line L of the permanent magnet 7 and the radial line L1 of the rotor assembly 20, and the radial line L1 starts from the center O of the rotor assembly 20 and passes through the center point E of the tail end of the permanent magnet 7,
  • the radial line L1 is equivalent to the lead OE, that is, the rotor assembly 20 adopts the inclined slot design, and the permanent magnet 7 is inclined to the radial line L1, which can greatly reduce the torque ripple of the permanent disk motor, improve the working efficiency of the motor, and reduce the motor noise. Improve the stability of the motor; through the above solution, the volume and cost of the motor can be further reduced when the performance of the motor is equivalent.
  • the value range of the included angle ⁇ is between 2.5° and 7.5°; specifically, the included angle ⁇ is preferably 5°, and the angle is set reasonably so that the distribution of the permanent magnets 7 is reasonable.
  • the axial cross-sectional shape of the permanent magnet 7 is a rectangle or a trapezoid.
  • the stator assembly 10 is installed in a stator disk 9 , a bearing seat 91 is protruded from the middle of the bottom plate 90 of the stator disk 9 , the bearing 8 is embedded in the bearing seat 91 , and the yoke 11 of the stator core 1 surrounds the center
  • the hole 110, the bearing seat 91 passes through the central hole 110, a rotating shaft 51 is protruded from the middle of the bottom end face of the rotor disk 5, and the rotating shaft 51 is inserted into the bearing 8, so that the rotor assembly 20 and the stator assembly 10 form an integral motor with a simple structure Reasonable and easy to install.
  • the bearing 8 adopts a single bearing design, which further reduces the cost and simplifies the structure.
  • the stator disk 9 includes a bottom plate 90 and a bearing seat 91 is protruded from the middle of the bottom plate 90 of the stator disk 9 .
  • the first installation hole 93 of the stator is passed through the first installation hole 93 through the first screw 94 and fastened to the stator core 1, so that the stator assembly 10 and the stator disc 9 are installed and connected together, with a simple structure and convenient installation.
  • the protruding peripheral annular baffle 95 at the peripheral edge of the bottom plate 90, the bottom plate 90, the bearing seat 91 and the peripheral annular baffle 95 enclose an annular accommodating cavity 96, and the stator assembly 10 is embedded in the annular accommodating cavity 96,
  • the structure design is reasonable, and the stator assembly 10 is effectively protected.
  • a plurality of second installation holes 53 are provided on the rotor disk 5 on the periphery of the rotating shaft 51, and the second screws 54 pass through the second installation holes 53 to be fastened to the rotor core 6, so that the rotor disk 5 and the plurality of rotor cores 6 and several permanent magnets 7 are locked into a whole.
  • a plurality of load mounting screw holes 52 arranged in the circumferential direction are also provided on the top surface of the rotor disk 5, so that the rotor disk 5 can be conveniently connected to an external load.
  • the rotating shaft 51 is hollow, which reduces weight, saves materials, reduces costs, accelerates the flow of air, and facilitates heat dissipation.
  • the axial cross-sectional shape of the permanent magnet 7 is a cuboid
  • the axial cross-sectional shape of the rotor core 6 is a sector
  • each rotor core 6 includes several pieces stacked along the axial direction of the rotor assembly 20 .
  • the rotor punching piece has a fan-shaped structure.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • This embodiment improves the rotor iron core on the basis of the first embodiment.
  • the axial cross-sectional shape of the permanent magnet 7 in this embodiment is a trapezoid
  • the rotor iron core 6 The axial cross-sectional shape of the rotor core 6 is rectangular, and the rotor core 6 is formed by stacking a number of rotor punching pieces 61 horizontally, so that the rotor core 6 is processed by the process of stacking riveting in the horizontal direction to overcome the vertical direction (that is, the axis of the rotor core 6).
  • the problem of silicon steel sheet falling off is easy to occur during the process of stacking riveting; the shape design is reasonable, the processing is convenient, and the processing cost is low.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)

Abstract

本实用新型公开了一种盘式永磁电机，包括定子组件和转子组件，定子组件和转子组件上下布局形成轴向磁耦合，定子组件包括定子铁芯，定子铁芯包括轭部和若干齿部，相邻两齿部之间形成一嵌线槽，嵌线槽设置有n个，定子铁芯的外径为D；转子组件包括转子盘、若干转子铁芯和若干永磁体，转子铁芯安装在转子盘上，相邻两转子铁芯之间嵌装一永磁体，嵌线槽的槽口宽度H≥sin(360°/2n)*D，定子铁芯采用开口槽结构，且槽口宽度根据定子铁芯的大小进行相应设计，可降低定子硅钢用量，从而降低制造成本；永磁体与转子组件的径向线之间形成夹角α，即转子组件采用斜槽设计，可低永磁盘式电机转矩脉动，提高电机的工作效率，减少电机噪音。

Description

一种盘式永磁电机 技术领域：
本实用新型涉及一种盘式永磁电机。
背景技术：
现有技术的轴向磁场盘式永磁同步电机，因其功率密度高、重量轻、体积小，被越来越多地得到应用，如应用于新能源汽车牵引电机。在这种现有电机结构中，转子磁钢布置大多采用表贴式磁钢结构轴向磁场，少部分采用SPOKE聚磁磁极结构，但当前盘式电机存在以下问题：1.盘式电机定子冲片一般采用闭口槽，这个结构的盘式电机硅钢利用率低，导致电机整体材料成本高；2、SPOKE转子结构在实际使用，由于聚磁效应气隙磁密高，导致采用该转子结构的盘式电机转矩脉偏高；3.采用普通SPOKE结构的电机转子铁芯，采用垂直叠压安装时，冲片容易脱落且气隙难以保证。
发明内容：
本实用新型的目的是提供一种盘式永磁电机，解决现有技术中定子冲片一般采用闭口槽，槽宽设计不合理，这个结构的盘式电机硅钢利用率低，导致电机整体材料成本高的技术问题。
本实用新型的进一步目的是提供一种盘式永磁电机，解决现有技术中采用SPOKE型转子结构在实际使用，由于聚磁效应气隙磁密高，导致转矩脉动偏高的技术问题。
本实用新型的第三个目的是提供一种盘式永磁电机，解决现有技术中采用SPOKE型转子结构，转子铁芯采用径向叠压时，冲片容易脱落且气隙难以保证的技术问题。
本实用新型的目的是通过下述技术方案予以实现的：
本实用新型的目的是提供一种盘式永磁电机，包括定子组件和转子组件， 定子组件和转子组件上下布局形成轴向磁耦合，定子组件包括定子铁芯、端部绝缘和线圈绕组，定子铁芯包括轭部和从轭部轴向凸出的若干齿部，相邻两齿部之间形成一个嵌线槽，嵌线槽设置有n个，定子铁芯的外径为D，齿部安装端部绝缘后卷绕线圈绕组；转子组件包括转子盘、若干块转子铁芯和若干块永磁体，若干块转子铁芯按周向间隔安装在转子盘上，相邻两转子铁芯之间嵌装一永磁体，其特征在于：嵌线槽采用开口槽的形式，即嵌线槽的宽度与嵌线槽的槽口宽度H是一致的，且嵌线槽的槽口宽度满足：H≥sin(360°/2n)*D。
优选地，该永磁体与转子组件的径向线之间形成夹角α。
优选地，夹角α的取值范围在2.5°-7.5°之间。
优选地，夹角α为5°。
优选地，永磁体的轴向截面形状为长方形或者梯形。
优选地，定子组件安装在一个定子盘里面，定子盘的底板中间凸出设置有轴承座，轴承嵌装在轴承座里，定子铁芯的轭部围成中心孔，轴承座穿过中心孔，在转子盘底端面中间凸出设置有转轴，转轴插装在轴承里，使转子组件与定子组件组成整体的电机。
优选地，永磁体的轴向截面形状是梯形时，转子铁芯的轴向截面形状是方形，转子铁芯由若干转子冲片水平堆叠而成。
优选地，定子盘包括底板和位于定子盘的底板中间凸出设置有轴承座，轴承座设置贯通孔，在轴承座外围的底板上开设有若干周向间隔布局的第一安装孔，通过第一螺钉穿过第一安装孔并拧紧在定子铁芯上，使定子组件与定子盘安装连接在一起。
优选地，底板的外围边缘处凸起的外围环形挡板，底板、轴承座和外围环形挡板围成一个环形容纳腔，定子组件嵌入到环形容纳腔里里面。
优选地，转轴的外围的转子盘上设置若干第二安装孔，通过第二螺钉穿过第二安装孔拧紧在转子铁芯上，使转子盘、若干块转子铁芯和若干块永磁体锁紧成一个整体。
优选地，在转子盘顶面上还设置有按周向布局的若干负载安装螺孔。
优选地，转轴是空心的。
优选地，若干块永磁体采用铁氧体材料以降低电机成本。
本实用新型与现有技术相比，具有如下效果：
1)本实用新型的一种盘式永磁电机，包括定子组件和转子组件，定子组件和转子组件上下布局形成轴向磁耦合，定子组件包括定子铁芯、端部绝缘和线圈绕组，定子铁芯包括轭部和从轭部轴向凸出的若干齿部，相邻两齿部之间形成一个嵌线槽，嵌线槽设置有n个，定子铁芯的外径为D，齿部安装端部绝缘后卷绕线圈绕组；转子组件包括转子盘、若干块转子铁芯和若干块永磁体，若干块转子铁芯按周向间隔安装在转子盘上，相邻两转子铁芯之间嵌装一永磁体，其特征在于：嵌线槽采用开口槽的形式，即嵌线槽的宽度与嵌线槽的槽口宽度H是一致的，且嵌线槽的槽口宽度满足：H≥sin(360°/2n)*D；即定子铁芯采用开口槽结构，且对其槽口宽度根据定子铁芯的大小进行相应设计，可以大幅降低定子硅钢用量，从而降低制造成本。
2)本实用新型的其它优点在实施例部分展开详细描述。
附图说明：
图1是为本实用新型实施例一提供的盘式永磁电机的立体结构示意图；
图2是为本实用新型实施例一提供的盘式永磁电机的分解结构示意图；
图3是为本实用新型实施例一提供的盘式永磁电机的主视结构示意图；
图4是为图3提供的A-A的剖面结构示意图；
图5是为本实用新型实施例一提供的定子铁芯的立体结构示意图；
图6是为本实用新型实施例一提供的定子铁芯的俯视图；
图7是为本实用新型实施例一提供的定子铁芯的嵌线槽的局部结构示意图；
图8是为本实用新型实施例一提供的永磁体与转子铁芯的结构示意图；
图9是为本实用新型实施例一提供的转子组件的立体图；
图10是为本实用新型实施例一提供的转子组件的俯视图；
图11是图10的B-B剖视图；
图12是为本实用新型实施例二提供的永磁体与转子铁芯的立体结构示意图；
图13是为本实用新型实施例二提供的转子铁芯的立体结构示意图。
具体实施方式：
下面通过具体实施例并结合附图对本实用新型作进一步详细的描述。
如图1至图11所示，本实施例提供的是一种盘式永磁电机，包括定子组件10和转子组件20，定子组件10和转子组件20上下布局形成轴向磁耦合，定子组件10包括定子铁芯1、端部绝缘2和线圈绕组3，定子铁芯1包括轭部11和从轭部11轴向凸出的若干齿部12，相邻两齿部12之间形成一个嵌线槽4，嵌线槽4设置有n个，定子铁芯1的外径为D，齿部12安装端部绝缘2后卷绕线圈绕组3；转子组件20包括转子盘5、若干块转子铁芯6和若干块永磁体7，若干块转子铁芯6按周向间隔安装在转子盘5上，相邻两转子铁芯6之间嵌装一永磁体7，其特征在于：嵌线槽4采用开口槽的形式，即嵌线槽4的宽度与嵌线槽4的槽口41宽度H是一致的，且嵌线槽4的槽口41宽度满足：H≥sin(360°/2n)*D。定子铁芯1采用开口槽结构，且槽口41宽度根据定子铁芯1的大小进行相应设计，可以大幅降低定子硅钢用量，从而降低制造成本。
优选地，该永磁体7的中心线L与转子组件20的径向线L1之间形成夹角α，径向线L1是由转子组件20的中心O出发经过永磁体7尾端的中心点E，径向线L1相当引线OE，即转子组件20采用斜槽设计，永磁体7倾斜于径向线L1，可以大幅降低永磁盘式电机转矩脉动，提高电机的工作效率，且能减少电机噪音，提高电机稳定性；通过上述方案，在电机性能相当的情况下可以进一步缩小电机的体积与成本。
优选地，夹角α的取值范围在2.5°-7.5°之间；具体地，该夹角α最好为5°，该角度设定合理，使永磁体7的分布合理。
优选地，永磁体7的轴向截面形状为长方形或者梯形。
优选地，定子组件10安装在一个定子盘9里面，定子盘9的底板90中间凸出设置有轴承座91，轴承8嵌装在轴承座91里，定子铁芯1的轭部11围成中心孔110，轴承座91穿过中心孔110，在转子盘5底端面中间凸出设置有转轴51，转轴51插装在轴承8里，使转子组件20与定子组件10组成整体的电机，结构简单合理，安装方便。轴承8采用单轴承设计，进一步降低成本，简化结构。
优选地，定子盘9包括底板90和位于定子盘9的底板90中间凸出设置有轴承座91，轴承座91设置贯通孔92，在轴承座91外围的底板90上开设有若干周向间隔布局的第一安装孔93，通过第一螺钉94穿过第一安装孔93并拧紧在定子铁芯1上，使定子组件10与定子盘9安装连接在一起，结构简单，安装方便。
优选地，底板90的外围边缘处凸起的外围环形挡板95，底板90、轴承座91和外围环形挡板95围成一个环形容纳腔96，定子组件10嵌入到环形容纳腔96里里面，结构设计合理，有效保护定子组件10。
优选地，转轴51的外围的转子盘5上设置若干第二安装孔53，通过第二螺钉54穿过第二安装孔53拧紧在转子铁芯6上，使转子盘5、若干块转子铁芯6和若干块永磁体7锁紧成一个整体。
优选地，在转子盘5顶面上还设置有按周向布局的若干负载安装螺孔52，使转子盘5可以方便与外部负载连接。
优选地，转轴51是空心的，减少重量，节省材料，降低成本，加快空气的流动，便于散热。
优选地，若干块永磁体7采用铁氧体材料以降低电机成本。
优先地，在本实施例中，永磁体7的轴向截面形状是长方体，转子铁芯6 的轴向截面形状是扇形，每一个转子铁芯6包括若干块沿转子组件20的轴向方向堆叠的转子冲片，该转子冲片为扇形结构。
实施例二：
本实施例是在实施例一的基础上对转子铁芯进行改良的，如图12和图13所示，在本实施例中的永磁体7的轴向截面形状是梯形时，转子铁芯6的轴向截面形状是长方形，转子铁芯6由若干转子冲片61水平堆叠而成，以便转子铁芯6采用水平方向叠铆的工艺进行加工，以克服转子铁芯6采用垂直方向(即轴向)叠铆的工艺加工时容易出现硅钢片脱落的问题；形状设计合理，方便加工，加工成本低。
以上实施例为本实用新型的较佳实施方式，但本实用新型的实施方式不限于此，其他任何未背离本实用新型的精神实质与原理下所作的改变、修饰、替代、组合、简化，均为等效的置换方式，都包含在本实用新型的保护范围之内。

Claims (13)

  1. 一种盘式永磁电机，包括定子组件(10)和转子组件(20)，定子组件(10)和转子组件(20)上下布局形成轴向磁耦合，定子组件(10)包括定子铁芯(1)、端部绝缘(2)和线圈绕组(3)，定子铁芯(1)包括轭部(11)和从轭部(11)轴向凸出的若干齿部(12)，相邻两齿部(12)之间形成一个嵌线槽(4)，嵌线槽(4)设置有n个，定子铁芯(1)的外径为D，齿部(12)安装端部绝缘(2)后卷绕线圈绕组(3)；转子组件(20)包括转子盘(5)、若干块转子铁芯(6)和若干块永磁体(7)，若干块转子铁芯(6)按周向间隔安装在转子盘(5)上，相邻两转子铁芯(6)之间嵌装一永磁体(7)，其特征在于：嵌线槽(4)采用开口槽的形式，即嵌线槽(4)的宽度与嵌线槽(4)的槽口(41)宽度H是一致的，且嵌线槽(4)的槽口(41)宽度满足：H≥sin(360°/2n)*D。
  2. 根据权利要求1所述的一种盘式永磁电机，其特征在于：该永磁体(7)的中心线L与转子组件(20)的径向线L1之间形成夹角α。
  3. 根据权利要求2所述的一种盘式永磁电机，其特征在于：夹角α的取值范围在2.5°-7.5°之间。
  4. 根据权利要求3所述的一种盘式永磁电机，其特征在于：夹角α为5°。
  5. 根据权利要求1或2或3或4所述的一种盘式永磁电机，其特征在于：永磁体(7)的轴向截面形状为长方形或者梯形。
  6. 根据权利要求5所述的一种盘式永磁电机，其特征在于：定子组件(10)安装在一个定子盘(9)里面，定子盘(9)的底板(90)中间凸出设置有轴承座(91)，轴承(8)嵌装在轴承座(91)里，定子铁芯(1)的轭部(11)围成中心孔(110)，轴承座(91)穿过中心孔(110)，在转子盘(5)底端面中间凸出设置有转轴(51)，转轴(51)插装在轴承(8)里，使转子组件(20)与定子组件(10)组成整体的电机。
  7. 根据权利要求6所述的一种盘式永磁电机，其特征在于：永磁体(7) 的轴向截面形状是梯形时，转子铁芯(6)的轴向截面形状是方形，转子铁芯(6)由若干转子冲片(61)水平堆叠而成。
  8. 根据权利要求6所述的一种盘式永磁电机，其特征在于：定子盘(9)包括底板(90)和位于定子盘(9)的底板(90)中间凸出设置有轴承座(91)，轴承座(91)设置贯通孔(92)，在轴承座(91)外围的底板(90)上开设有若干周向间隔布局的第一安装孔(93)，通过第一螺钉(94)穿过第一安装孔(93)并拧紧在定子铁芯(1)上，使定子组件(10)与定子盘(9)安装连接在一起。
  9. 根据权利要求8所述的一种盘式永磁电机，其特征在于：底板(90)的外围边缘处凸起的外围环形挡板(95)，底板(90)、轴承座(91)和外围环形挡板(95)围成一个环形容纳腔(96)，定子组件(10)嵌入到环形容纳腔(96)里里面。
  10. 根据权利要求6所述的一种盘式永磁电机，其特征在于：转轴(51)的外围的转子盘(5)上设置若干第二安装孔(53)，通过第二螺钉(54)穿过第二安装孔(53)拧紧在转子铁芯(6)上，使转子盘(5)、若干块转子铁芯(6)和若干块永磁体(7)锁紧成一个整体。
  11. 根据权利要求10所述的一种盘式永磁电机，其特征在于：在转子盘(5)顶面上还设置有按周向布局的若干负载安装螺孔(52)。
  12. 根据权利要求11所述的一种盘式永磁电机，其特征在于：转轴(51)是空心的。
  13. 根据权利要求12所述的一种盘式永磁电机，其特征在于：若干块永磁体(7)采用铁氧体材料以降低电机成本。
PCT/CN2021/115564 2021-04-30 2021-08-31 一种盘式永磁电机 Ceased WO2022227358A1 (zh)

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