WO2022227358A1 - Moteur électrique à aimant permanent de type disque - Google Patents

Moteur électrique à aimant permanent de type disque Download PDF

Info

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
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
stator
permanent magnet
disk
assembly
Prior art date
Application number
PCT/CN2021/115564
Other languages
English (en)
Chinese (zh)
Inventor
肖锐
Original Assignee
中山大洋电机股份有限公司
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
Application filed by 中山大洋电机股份有限公司 filed Critical 中山大洋电机股份有限公司
Publication of WO2022227358A1 publication Critical patent/WO2022227358A1/fr

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
    • 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.

Landscapes

  • 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

Est divulgué un moteur électrique à aimant permanent de type disque, comprenant un ensemble stator et un ensemble rotor, l'ensemble stator et l'ensemble rotor étant placés l'un au-dessus de l'autre pour créer un couplage magnétique axial, l'ensemble stator comprenant un noyau de fer de stator, le noyau de fer de stator comprenant une partie culasse et une pluralité de parties dent, une fente d'incorporation de fil étant formée entre deux parties dent adjacentes, le nombre de fentes d'incorporation de fil étant de n, et un diamètre externe du noyau de fer de stator étant D ; l'ensemble rotor comprend un disque de rotor, une pluralité de noyaux de fer de rotor et une pluralité d'aimants permanents ; le noyau de fer de rotor est monté sur le disque de rotor ; un aimant permanent est intégré entre deux noyaux de fer de rotor adjacents ; la largeur H d'une ouverture de fente de la fente d'incorporation de fil satisfait H ≥ sin(360°/2n)*D ; le noyau de fer de stator est une structure à fente ouverte et la largeur d'une ouverture de fente est conçue de manière correspondante en fonction de la taille du noyau de fer de stator ; la quantité d'acier au silicium utilisée dans un stator peut être réduite, et ainsi le coût de fabrication est réduit ; et un angle inclus α est formé entre une ligne radiale de l'aimant permanent et celle de l'ensemble rotor, autrement dit, l'ensemble rotor utilise une conception de fente inclinée, de telle sorte que la pulsation de couple du moteur électrique à aimant permanent de type disque peut être abaissée, l'efficacité de fonctionnement du moteur électrique est améliorée et le bruit du moteur électrique est réduit.
PCT/CN2021/115564 2021-04-30 2021-08-31 Moteur électrique à aimant permanent de type disque WO2022227358A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202120932170.9 2021-04-30
CN202120932170.9U CN214850918U (zh) 2021-04-30 2021-04-30 一种盘式永磁电机

Publications (1)

Publication Number Publication Date
WO2022227358A1 true WO2022227358A1 (fr) 2022-11-03

Family

ID=78771921

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/115564 WO2022227358A1 (fr) 2021-04-30 2021-08-31 Moteur électrique à aimant permanent de type disque

Country Status (2)

Country Link
CN (1) CN214850918U (fr)
WO (1) WO2022227358A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116667560B (zh) * 2023-06-12 2024-05-31 青岛东唐节能电机制造有限公司 一种储能式发电机

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012023805A (ja) * 2010-07-12 2012-02-02 Ihi Corp 電動機の固定子とその製造方法
CN103208881A (zh) * 2013-03-22 2013-07-17 浙江富迅科技有限公司 一种轴向开关磁阻无齿轮曳引机
CN204205739U (zh) * 2014-09-05 2015-03-11 常州高尔登科技有限公司 盘式电机的定子组件
CN204652188U (zh) * 2015-03-05 2015-09-16 腾达电动科技镇江有限公司 用于发电机组的盘式永磁发电机
CN209659021U (zh) * 2019-05-14 2019-11-19 上海盘毂动力科技股份有限公司 一种盘式电机

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012023805A (ja) * 2010-07-12 2012-02-02 Ihi Corp 電動機の固定子とその製造方法
CN103208881A (zh) * 2013-03-22 2013-07-17 浙江富迅科技有限公司 一种轴向开关磁阻无齿轮曳引机
CN204205739U (zh) * 2014-09-05 2015-03-11 常州高尔登科技有限公司 盘式电机的定子组件
CN204652188U (zh) * 2015-03-05 2015-09-16 腾达电动科技镇江有限公司 用于发电机组的盘式永磁发电机
CN209659021U (zh) * 2019-05-14 2019-11-19 上海盘毂动力科技股份有限公司 一种盘式电机

Also Published As

Publication number Publication date
CN214850918U (zh) 2021-11-23

Similar Documents

Publication Publication Date Title
JP4672083B2 (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
CN202524184U (zh) 永磁电机及应用该永磁电机的无叶风扇
CN101814811A (zh) 轴向磁场永磁风力发电机
WO2021056902A1 (fr) Moteur électrique et appareil électroménager
CN105071562A (zh) 一种定子永磁型场调制电机
WO2019029109A9 (fr) Moteur tangentiel, rotor de moteur tangentiel et noyau de fer de rotor associé
CN103296792B (zh) 拥有非晶铁合金轴向磁路的盘式电机及其制造方法和定子组件
WO2017071470A1 (fr) Générateur électrique du type disque de forte puissance
WO2017177740A1 (fr) Moteur à aimant permanent
WO2022227358A1 (fr) Moteur électrique à aimant permanent de type disque
WO2020258758A1 (fr) Noyau de stator et moteur
CN110112844B (zh) 一种双凸极永磁电机
CN210167867U (zh) 定子、电机、压缩机和制冷设备
CN105471127B (zh) 电机及电机用磁芯
CN201403035Y (zh) 轴向磁场永磁风力发电机
CN203193469U (zh) 无铁芯盘式直流无刷电机
CN201733147U (zh) 一种有限转角力矩电动机
WO2017121190A1 (fr) Générateur à faible puissance offrant une puissance de 6 kw à 15 kw
CN208835973U (zh) 一种小型化嵌入式永磁发电机结构
CN209375272U (zh) 一种内外层永磁体错位的双定子电机
CN214755777U (zh) 切向式电机、压缩机、空调器
WO2019237736A1 (fr) Moteur d'entraînement
CN211296358U (zh) 一种双轴向切向磁通电机
CN217642891U (zh) 一种冲片定转子铁芯
CN209030000U (zh) 一种永磁无刷直流电机定子冲片

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: 21938822

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: 21938822

Country of ref document: EP

Kind code of ref document: A1