WO2018076486A1 - Motor - Google Patents

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Publication number
WO2018076486A1
WO2018076486A1 PCT/CN2016/109716 CN2016109716W WO2018076486A1 WO 2018076486 A1 WO2018076486 A1 WO 2018076486A1 CN 2016109716 W CN2016109716 W CN 2016109716W WO 2018076486 A1 WO2018076486 A1 WO 2018076486A1
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WIPO (PCT)
Prior art keywords
stator
motor
rotor
block
magnetic
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Application number
PCT/CN2016/109716
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French (fr)
Chinese (zh)
Inventor
吴迪
陈金涛
诸自强
王洪晓
Original Assignee
广东威灵电机制造有限公司
美的威灵电机技术(上海)有限公司
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Publication date
Priority to CN201621167414.4U priority Critical patent/CN206226246U/en
Priority to CN201621167414.4 priority
Priority to CN201610942969.XA priority patent/CN106374707B/en
Priority to CN201610942969.X priority
Application filed by 广东威灵电机制造有限公司, 美的威灵电机技术(上海)有限公司 filed Critical 广东威灵电机制造有限公司
Publication of WO2018076486A1 publication Critical patent/WO2018076486A1/en

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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12Stationary parts of the magnetic circuit
    • H02K1/14Stator cores with salient poles
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12Stationary parts of the magnetic circuit
    • H02K1/16Stator cores with slots for windings
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K16/00Machines with more than one rotor or stator
    • H02K16/04Machines with one rotor and two stators

Abstract

Provided is a motor (100), comprising: an outer stator (10); said outer stator (10) comprises at least one outer-stator block; the quantity of outer-stator blocks is smaller than the quantity of outer-stator blocks required along the circumference of the motor (100) to be connected to form a closed loop; an inner stator (20); said inner stator (20) is located, in the radial direction of the motor (100), on the inner side of the outer stator (10) and arranged at an interval with the outer stator (10); the inner stator (20) comprises at least one inner-stator block; the quantity of said inner-stator blocks is the same as the quantity of outer-stator blocks; a rotatable rotor (30); said rotor (30) is a closed loop extending along the circumferential direction of the motor (100); the rotor (30) is located, in the radial direction of the motor (100), on the inner side of the outer stator (10) and the outer side of the inner stator (20).

Description

电机Motor 技术领域Technical field
本发明涉及电机技术领域,更具体地,涉及一种电机。The present invention relates to the field of motor technology, and more particularly to an electric machine.
背景技术Background technique
目前,直接驱动技术已经越来越多的应用到工业和生活中。由于省略了传动装置,直接驱动技术的系统效率得到了有效地提高,相关技术中,直接驱动技术主要应用于低速大转矩的场合,为了尽可能的提高低速大转矩驱动场合下的电机效率,电机需要尽可能的增加外径或轴向长度,定子的体积明显增大,定子部分的成本相应增加。At present, direct drive technology has been increasingly applied to industry and life. Due to the omission of the transmission, the system efficiency of the direct drive technology has been effectively improved. In the related art, the direct drive technology is mainly applied to low-speed and high-torque applications, in order to improve the efficiency of the motor under low-speed and high-torque driving. The motor needs to increase the outer diameter or the axial length as much as possible, the volume of the stator is significantly increased, and the cost of the stator portion is correspondingly increased.
发明内容Summary of the invention
本发明旨在至少在一定程度上解决相关技术中的技术问题之一。The present invention aims to solve at least one of the technical problems in the related art to some extent.
为此,本发明提出一种电机,该电机的结构简单、系统效率高、节约成本、应用范围广。To this end, the present invention provides an electric motor that has a simple structure, high system efficiency, cost saving, and wide application range.
根据本发明实施例的电机,包括:外定子,所述外定子包括至少一个外定子分块,所述外定子分块的数量小于沿所述电机的周向连接成闭环形所需的外定子分块的数量;内定子,所述内定子在所述电机的径向上位于所述外定子的内侧且与所述外定子间隔设置,所述内定子包括至少一个内定分块,所述内定子分块的数量与所述外定子分块的数量相同;可旋转的转子,所述转子为沿所述电机的周向延伸的闭环形,所述转子在所述电机的径向上位于所述外定子的内侧以及所述内定子的外侧。An electric machine according to an embodiment of the present invention includes: an outer stator including at least one outer stator block, the outer stator block having a smaller number than an outer stator required to be connected in a closed loop shape along a circumferential direction of the motor a number of partitions; an inner stator located inside the outer stator and spaced apart from the outer stator in a radial direction of the motor, the inner stator including at least one inner block, the inner stator The number of segments is the same as the number of the outer stator segments; a rotatable rotor having a closed loop shape extending in the circumferential direction of the motor, the rotor being located outside the motor in the radial direction The inside of the stator and the outside of the inner stator.
根据本发明实施例的电机,通过在转子的内侧和外侧分别设置内定子分块和外定子分块,并使外定子分块和内定子分块的数量相等,这样在转子外径改变的基础上,定子的体积不会发生明显变化,节约了定子部分的成本,同时提高了低速大转矩驱动场合下的电机效率;而在不改变转子的径向尺寸,可以减小电机的整机尺寸,使电机的结构更加紧凑,适于应用在家用电器、电动汽车、风力发电等场合。该电机的结构简单、工作效率高、成本较低、应用范围广。According to the motor of the embodiment of the present invention, the inner stator block and the outer stator block are respectively disposed on the inner side and the outer side of the rotor, and the number of the outer stator block and the inner stator block are equalized, so that the outer diameter of the rotor is changed. On the upper side, the volume of the stator does not change significantly, which saves the cost of the stator part, and at the same time improves the efficiency of the motor in the case of low-speed and large-torque driving; and without changing the radial size of the rotor, the overall size of the motor can be reduced. The structure of the motor is more compact, and is suitable for applications such as household appliances, electric vehicles, wind power generation and the like. The motor has the advantages of simple structure, high work efficiency, low cost and wide application range.
另外,根据本发明实施例的电机,还可以具有如下附加的技术特征:In addition, the motor according to an embodiment of the present invention may further have the following additional technical features:
根据本发明的一个实施例,所述外定子分块为多个且沿所述电机的周向均匀排布,所述内定子分块为多个且沿所述电机的周向均匀排布。According to an embodiment of the invention, the outer stator is divided into a plurality of pieces and evenly arranged along the circumferential direction of the motor, the inner stator being divided into a plurality of pieces and evenly arranged along the circumferential direction of the motor.
根据本发明的一个实施例,所述外定子分块和所述内定子分块沿所述电机的周向一一相对地设置。According to an embodiment of the invention, the outer stator block and the inner stator block are arranged one above the other in the circumferential direction of the motor.
根据本发明的一个实施例,所述转子包括:多个导磁铁芯和多个非导磁间隔块,多个所 述导磁铁芯和多个所述非导磁间隔块沿所述电机的周向交替排列。According to an embodiment of the invention, the rotor comprises: a plurality of magnetic cores and a plurality of non-magnetic spacing blocks, a plurality of The magnetic core and the plurality of non-magnetic spacer blocks are alternately arranged along the circumferential direction of the motor.
根据本发明的一个实施例,所述外定子分块包括:外定子导磁铁芯和定子绕组,所述定子绕组绕制在所述外定子导磁铁芯上。According to an embodiment of the invention, the outer stator segment comprises: an outer stator core and a stator winding, the stator winding being wound on the outer stator core.
根据本发明的一个实施例,所述内定子分块包括:内定子导磁铁芯和永磁体,所述永磁体设在所述内定子导磁铁芯上。According to an embodiment of the invention, the inner stator block comprises: an inner stator core and a permanent magnet, the permanent magnet being disposed on the inner stator core.
根据本发明的一个实施例,每个所述外定子分块产生的磁场的极对数为ps,所述内定子的永磁体的数量为npm0且每个所述内定子分块产生的磁场的极对数为pf=npm0/2,所述转子的导磁铁芯的数量为pr且满足:pr=n0|ps±pf|,其中,n0为沿所述电机的周向连接成闭环形所需的外定子分块的数量。According to an embodiment of the invention, the pole pair of the magnetic field generated by each of the outer stator segments is ps, the number of permanent magnets of the inner stator is npm0 and the magnetic field generated by each of the inner stator blocks The number of pole pairs is pf=npm0/2, the number of cores of the rotor is pr and satisfies: pr=n0|ps±pf|, where n0 is required to be connected in a closed loop shape along the circumferential direction of the motor The number of outer stator blocks.
根据本发明的一个实施例,所述内定子分块包括:内定子导磁铁芯和定子绕组,所述定子绕组绕制在所述内定子导磁铁芯上。According to an embodiment of the invention, the inner stator segment comprises: an inner stator core and a stator winding, the stator winding being wound on the inner stator core.
根据本发明的一个实施例,所述外定子分块包括:外定子导磁铁芯和永磁体,所述永磁体设在所述外定子导磁铁芯上。According to an embodiment of the invention, the outer stator segment comprises: an outer stator core and a permanent magnet, the permanent magnet being disposed on the outer stator core.
根据本发明的一个实施例,每个所述内定子分块产生的磁场的极对数为ps,所述外定子的永磁体的数量为npm0且每个所述外定子分块产生的磁场的极对数为pf=npm0/2,所述转子的导磁铁芯的数量为pr且满足:pr=n0|ps±pf|,其中,n0为沿所述电机的周向连接成闭环形所需的内定子分块的数量。According to an embodiment of the invention, the pole pair number of the magnetic field generated by each of the inner stator segments is ps, the number of permanent magnets of the outer stator is npm0 and the magnetic field generated by each of the outer stator blocks The number of pole pairs is pf=npm0/2, the number of cores of the rotor is pr and satisfies: pr=n0|ps±pf|, where n0 is required to be connected in a closed loop shape along the circumferential direction of the motor The number of inner stator blocks.
根据本发明的一个实施例,所述电机还包括:定子固定板和转子固定板,所述内定子导磁铁芯在所述电机的径向上位于所述外定子导磁铁芯的内侧且与所述外定子导磁铁芯间隔设置,所述转子固定板与所述定子固定板沿所述电机的轴向间隔开布置且与所述输出轴相连,所述转子设在所述转子固定板上。According to an embodiment of the present invention, the motor further includes: a stator fixing plate and a rotor fixing plate, the inner stator core is located inside the outer stator core of the stator in a radial direction of the motor and The outer stator cores are spaced apart, and the rotor fixing plate and the stator fixing plate are spaced apart from each other in the axial direction of the motor and are connected to the output shaft, and the rotor is disposed on the rotor fixing plate.
根据本发明的一个实施例,每个所述外定子分块具有多个定子齿和分别位于相邻定子齿之间的多个齿槽,每个所述外定子分块的定子齿的数量为Ns0,每个所述外定子分块的相邻齿槽的槽距角为α0且满足:α0=2π/Ns0/n0,其中,n0为沿所述电机的周向连接成闭环形所需的外定子分块的数量。According to an embodiment of the invention, each of the outer stator segments has a plurality of stator teeth and a plurality of slots respectively located between adjacent stator teeth, the number of stator teeth of each of the outer stator segments being Ns0, the groove pitch angle of the adjacent tooth slots of each of the outer stator blocks is α0 and satisfies: α0=2π/Ns0/n0, where n0 is required to be connected in a closed loop shape along the circumferential direction of the motor The number of outer stator blocks.
根据本发明的一个实施例,所述外定子的中心轴线、所述内定子的中心轴线和所述转子的中心轴线重合。According to an embodiment of the invention, the central axis of the outer stator, the central axis of the inner stator and the central axis of the rotor coincide.
本发明的附加方面和优点将在下面的描述中部分给出,部分将从下面的描述中变得明显,或通过本发明的实践了解到。The additional aspects and advantages of the invention will be set forth in part in the description which follows.
附图说明DRAWINGS
图1是根据本发明实施例的电机的纵向剖视图; 1 is a longitudinal cross-sectional view of a motor in accordance with an embodiment of the present invention;
图2是根据本发明实施例的电机的截面图;2 is a cross-sectional view of a motor in accordance with an embodiment of the present invention;
图3是根据本发明另一个实施例的电机的纵向剖视图;Figure 3 is a longitudinal cross-sectional view of a motor in accordance with another embodiment of the present invention;
图4是根据本发明另一个实施例的电机的截面图;Figure 4 is a cross-sectional view of a motor in accordance with another embodiment of the present invention;
图5是图4中D部的放大图。Fig. 5 is an enlarged view of a portion D in Fig. 4;
附图标记:Reference mark:
100:电机;100: motor;
10:外定子;10a:定子齿;10b:齿槽;10: outer stator; 10a: stator teeth; 10b: cogging;
11:外定子导磁铁芯;12:定子绕组;13:永磁体;11: outer stator core; 12: stator winding; 13: permanent magnet;
20:内定子;20: inner stator;
21:内定子导磁铁芯;22:永磁体;23:定子绕组;21: inner stator core; 22: permanent magnet; 23: stator winding;
30:转子;30: rotor;
31:导磁铁芯;32:非导磁间隔快;31: magnetic core; 32: non-magnetic spacing is fast;
40:输出轴;40: output shaft;
50:轴承;50: bearing;
60:定子固定板;60: stator fixing plate;
70:转子固定板。70: Rotor fixed plate.
具体实施方式detailed description
下面详细描述本发明的实施例,所述实施例的示例在附图中示出。下面通过参考附图描述的实施例是示例性的,旨在用于解释本发明,而不能理解为对本发明的限制。Embodiments of the invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are intended to be illustrative of the invention and are not to be construed as limiting.
下面结合附图1至图5具体描述根据本发明实施例的电机100。The motor 100 according to an embodiment of the present invention will be specifically described below with reference to FIGS. 1 through 5.
根据本发明实施例的电机100包括:外定子10、内定子20、可旋转的转子30和输出轴40。An electric machine 100 according to an embodiment of the present invention includes an outer stator 10, an inner stator 20, a rotatable rotor 30, and an output shaft 40.
具体而言,外定子10包括至少一个外定子分块,外定子分块的数量小于沿电机100的周向连接成闭环形所需的外定子分块的数量,内定子20在电机100的径向上位于外定子10的内侧且与外定子10间隔设置,内定子20包括至少一个内定分块,内定子分块的数量与外定子分块的数量相同且外定子分块和内定子分块沿电机100的周向一一相对地设置,转子30为沿电机100的周向延伸的闭环形,转子30在电机100的径向上位于外定子10的内侧以及内定子20的外侧,输出轴40与转子30相连。Specifically, the outer stator 10 includes at least one outer stator block, the number of outer stator segments being smaller than the number of outer stator segments required to be connected in a closed loop shape along the circumferential direction of the motor 100, and the inner stator 20 at the diameter of the motor 100 Upwardly located on the inner side of the outer stator 10 and spaced apart from the outer stator 10, the inner stator 20 includes at least one inner block, the number of inner stator blocks is the same as the number of outer stator blocks, and the outer stator block and the inner stator block are along The circumferential direction of the motor 100 is relatively one-to-one, and the rotor 30 has a closed-loop shape extending in the circumferential direction of the motor 100. The rotor 30 is located on the inner side of the outer stator 10 and the outer side of the inner stator 20 in the radial direction of the motor 100, and the output shaft 40 is The rotors 30 are connected.
换言之,该电机100主要由外定子10、内定子20、可旋转的转子30和输出轴40组成,其中,外定子10由至少一个外定子分块组成,内定子分块由至少一个内定子分块组成,外 定子分块与内定子分块的数量相同,分别小于沿电机100周向连接为封闭环形需要的分块数量,外定子分块和内定子20沿着电机100的周向一一对应设置,在电机100的径向方向上,外定子10与内定子20间隔开设置,即外定子10与内定子20之间隔有一定的距离,且外定子10位于内定子20的外侧。In other words, the motor 100 is mainly composed of an outer stator 10, an inner stator 20, a rotatable rotor 30, and an output shaft 40, wherein the outer stator 10 is composed of at least one outer stator block, and the inner stator block is composed of at least one inner stator. Block composition, outside The number of the stator block and the inner stator block are the same, respectively smaller than the number of blocks required to be connected to the closed ring along the circumferential direction of the motor 100, and the outer stator block and the inner stator 20 are arranged one-to-one along the circumferential direction of the motor 100, In the radial direction of the motor 100, the outer stator 10 is spaced apart from the inner stator 20, that is, the outer stator 10 is spaced apart from the inner stator 20 by a certain distance, and the outer stator 10 is located outside the inner stator 20.
此外,转子30形成为沿电机100周向的封闭环形,在电机100的径向方向上外定子10与内定子20之间的间隔内设置有转子30,即在电机100径向上转子30位于外定子10的内侧及内定子20的外侧,转子30与输出轴40相连接,转子30转动带动输出轴40也发生转动,进而对外界做功。Further, the rotor 30 is formed as a closed ring in the circumferential direction of the motor 100, and a rotor 30 is disposed in the interval between the outer stator 10 and the inner stator 20 in the radial direction of the motor 100, that is, the rotor 30 is located radially in the motor 100 The inner side of the stator 10 and the outer side of the inner stator 20, the rotor 30 is connected to the output shaft 40, and the rotation of the rotor 30 causes the output shaft 40 to also rotate, thereby performing work on the outside.
由此,根据本发明实施例的电机100,通过在转子30的内侧和外侧分别设置内定子分块和外定子分块,并使外定子分块和内定子分块的位置对应且数量相等,这样在转子30外径改变的基础上,定子的体积不会发生明显变化,节约了定子部分的成本,同时提高了低速大转矩驱动场合下的电机100效率;而在不改变转子30的径向尺寸,可以减小电机100的整机尺寸,使电机100的结构更加紧凑,适于应用在家用电器、电动汽车、风力发电等场合。该电机100的结构简单、工作效率高、成本较低、应用范围广。Thus, according to the motor 100 of the embodiment of the present invention, the inner stator block and the outer stator block are respectively disposed on the inner side and the outer side of the rotor 30, and the positions of the outer stator block and the inner stator block are corresponding and equal in number, Thus, on the basis of the change of the outer diameter of the rotor 30, the volume of the stator does not change significantly, the cost of the stator portion is saved, and the efficiency of the motor 100 in the case of low-speed and large-torque driving is improved; and the diameter of the rotor 30 is not changed. The size of the motor 100 can be reduced, so that the structure of the motor 100 is more compact, and is suitable for applications such as household appliances, electric vehicles, wind power generation, and the like. The motor 100 has a simple structure, high work efficiency, low cost, and wide application range.
在本发明的一些具体实施方式中,外定子分块和内定子分块分别包括一个。In some embodiments of the invention, the outer stator block and the inner stator block respectively comprise one.
具体地,如图3至图5所示,电机100的外定子10包括一个外定子分块,相对应地,内定子20也包括一个内定子分块,外定子分块与内定子分块的位置相对应,即外定子10和内定子20分别形成设在转子30的外侧和内侧的弧形段,在保证产生高转矩的基础上,有利于减小电机100的体积,既可以降低电机100的成本,又可以实现电机100的轻量化。Specifically, as shown in FIGS. 3 to 5, the outer stator 10 of the motor 100 includes an outer stator block. Correspondingly, the inner stator 20 also includes an inner stator block, and the outer stator block and the inner stator block. Corresponding positions, that is, the outer stator 10 and the inner stator 20 respectively form arc segments provided on the outer side and the inner side of the rotor 30, and on the basis of ensuring high torque, it is advantageous to reduce the volume of the motor 100, thereby reducing the motor. The cost of 100 can further reduce the weight of the motor 100.
在本发明的另一些具体实施例方式中,外定子分块为多个且沿电机100的周向均匀排布,内定子分块为多个且沿电机100的周向均匀排布。In still other embodiments of the present invention, the outer stator is divided into a plurality of pieces and evenly arranged along the circumferential direction of the motor 100, and the inner stator is divided into a plurality of pieces and evenly arranged along the circumferential direction of the motor 100.
也就是说,外定子10包括多个沿着电机100的周向均匀间隔的布置的外定子分块,内定子20包括多个沿着电机100的周向均匀间隔的布置的内定子分块,且多个外定子分块的位置与多个内定子分块的位置一一对应,每个外定子分块与相对应的内定子分块在电机100的径向上间隔设置,且外定子分块位于内定子20的外侧,这样可以将转子30设置在外定子10与内定子20之间,从而保证外定子10和内定子20可以产生均匀的磁场,从而提高电机100的性能,进而提高电机100的品质。That is, the outer stator 10 includes a plurality of outer stator segments that are evenly spaced along the circumferential direction of the motor 100, and the inner stator 20 includes a plurality of inner stator segments that are evenly spaced along the circumference of the motor 100, And the positions of the plurality of outer stator segments are in one-to-one correspondence with the positions of the plurality of inner stator segments, and each outer stator segment and the corresponding inner stator segment are spaced apart in the radial direction of the motor 100, and the outer stator is divided. Located on the outer side of the inner stator 20, the rotor 30 can be disposed between the outer stator 10 and the inner stator 20, thereby ensuring that the outer stator 10 and the inner stator 20 can generate a uniform magnetic field, thereby improving the performance of the motor 100, thereby improving the motor 100. quality.
可以理解的是,外定子分块和内定子分块的数量可以依据实际情况灵活设定,例如、如可以设置三个外定子分块和三个内定子分块;或者外定子分块和内定子分块的数量分别包括五个等。It can be understood that the number of outer stator blocks and inner stator blocks can be flexibly set according to actual conditions, for example, if three outer stator blocks and three inner stator blocks can be set; or outer stator block and default The number of sub-blocks includes five equals.
其中,转子30包括:多个导磁铁芯31和多个非导磁间隔块32,多个导磁铁芯31和多个非导磁间隔块32沿电机100的周向交替排列。 The rotor 30 includes a plurality of magnetic cores 31 and a plurality of non-magnetic spacing blocks 32. The plurality of magnetic cores 31 and the plurality of non-magnetic spacing blocks 32 are alternately arranged along the circumferential direction of the motor 100.
换句话说,转子30主要由多个导磁铁芯31和多个非导磁间隔块32组成,多个导磁铁芯31和多个非导磁间隔块32在电机100周向上分别相互交替排布以构成封闭环形,即在每个导磁铁芯31的相邻两侧分别设置有一个非导磁间隔块32,每两个非导磁间隔块32之间设有一个导磁铁芯31,这样可以依据负载的大小自由进行选取转子30外径,定子的体积不会发生明显变化,不会对定子的用量产生影响。In other words, the rotor 30 is mainly composed of a plurality of cores 31 and a plurality of non-magnetic spacers 32, and the plurality of cores 31 and the plurality of non-magnetic spacers 32 are alternately arranged in the circumferential direction of the motor 100, respectively. To form a closed loop, that is, a non-magnetic spacing block 32 is disposed on each adjacent side of each of the conductive cores 31, and a conductive core 31 is disposed between each of the two non-magnetic spacing blocks 32. According to the size of the load, the outer diameter of the rotor 30 can be freely selected, and the volume of the stator does not change significantly, and the amount of the stator is not affected.
在电机100径向上、多个导磁铁芯31和多个非导磁间隔块32形成的封闭环形转子30位于外定子10与内定子20之间,即在电机100径向上、转子30位于内定子20的外侧,外定子10的内侧,且转子30分别与外定子10和内定子20具有一定的间隙,转子30转动时,外定子10和内定子20不会对转子30产生卡死的现象,保证电机100的正常工作。A closed annular rotor 30 formed in the radial direction of the motor 100, a plurality of cores 31 and a plurality of non-magnetic spacers 32 is located between the outer stator 10 and the inner stator 20, that is, in the radial direction of the motor 100, and the rotor 30 is located in the inner stator. The outer side of the outer stator 10, the inner side of the outer stator 10, and the rotor 30 have a certain gap with the outer stator 10 and the inner stator 20, respectively. When the rotor 30 rotates, the outer stator 10 and the inner stator 20 do not jam the rotor 30. The normal operation of the motor 100 is ensured.
在本发明的一些具体实施方式中,外定子分块包括:外定子导磁铁芯11和定子绕组12,定子绕组12绕制在外定子导磁铁芯11上。In some embodiments of the invention, the outer stator block includes an outer stator magnet core 11 and a stator winding 12 wound on the outer stator core 11 .
也就是说,外定子分块主要由外定子导磁铁芯11和定子绕组12构成,外定子导磁铁芯11可以由高高导磁材料加工而成,定子绕组12绕设在外定子导磁铁芯11上,如图2所示,将定子绕组12绕设在外定子导磁铁芯11的A、B和C三处,定子绕组12形成三相绕组,当通入三相电流时,每个外定子分块对应的定子绕组12就会产生磁场。That is to say, the outer stator block is mainly composed of the outer stator core 11 and the stator winding 12, and the outer stator core 11 can be processed by a high-magnetic material, and the stator winding 12 is wound around the outer stator core 11 Above, as shown in FIG. 2, the stator winding 12 is wound around three, A, B and C of the outer stator core 11 and the stator winding 12 forms a three-phase winding. When three-phase current is applied, each outer stator is divided. The stator winding 12 corresponding to the block generates a magnetic field.
其中,每个外定子分块具有多个定子齿10a和分别位于相邻定子齿10a之间的多个齿槽10b,每个外定子分块的定子齿10a的数量为Ns0,每个外定子分块的相邻齿槽10b的槽距角为α0且满足:α0=2π/Ns0/n0,其中,n0为沿电机100的周向连接成闭环形所需的外定子分块的数量。Wherein each outer stator block has a plurality of stator teeth 10a and a plurality of slots 10b respectively located between adjacent stator teeth 10a, and the number of stator teeth 10a of each outer stator block is Ns0, and each outer stator The groove pitch angle of the adjacent tooth grooves 10b of the block is α0 and satisfies: α0 = 2π / Ns0 / n0, where n0 is the number of outer stator blocks required to be connected in a closed loop shape along the circumferential direction of the motor 100.
如图1所示,在每个外定子分块上布置有多个定子齿10a,多个定子齿10a限定出多个齿槽10b,定子齿10a与齿槽10b交替排布,用Ns0表示每个外定子分块的定子齿10a的数量,用α0表示每个外定子分块的相邻齿槽10b的槽距角,则Ns0与α0满足α0=2π/Ns0/n0,n0表示沿电机100的周向连接成闭环形所需的外定子分块的数量,即每个外定子分块的相邻齿槽10b的槽距角等于360°与每个外定子分块的定子齿10a的数量为Ns0的商的n0倍。As shown in FIG. 1, a plurality of stator teeth 10a are arranged on each outer stator block, and a plurality of stator teeth 10a define a plurality of slots 10b, and the stator teeth 10a and the slots 10b are alternately arranged, and each of Ns0 is used. For the number of stator teeth 10a of the outer stator block, α0 represents the groove angle of the adjacent tooth groove 10b of each outer stator block, then Ns0 and α0 satisfy α0=2π/Ns0/n0, and n0 represents the motor 100. The number of outer stator segments required to be circumferentially connected in a closed loop shape, that is, the groove pitch angle of the adjacent tooth grooves 10b of each outer stator block is equal to 360° and the number of stator teeth 10a of each outer stator block N0 times the quotient of Ns0.
此外,内定子分块包括:内定子导磁铁芯21和永磁体22,永磁体22设在内定子导磁铁芯21上。如图2所示,内定子20主要由内定子导磁铁芯21和永磁体22组成,内定子导磁铁芯21同样可以由高导磁材料加工而成,永磁体22设置在内定子导磁铁芯21上,在电机100的周向上、永磁体22均匀间隔地排布在内定子导磁铁芯21上,永磁体22采用平行充磁的方式,即相同极性的永磁体22相对的方式均匀的布置在内定子导磁铁芯21上,可以产生等效的永磁磁场。Further, the inner stator block includes an inner stator core 21 and a permanent magnet 22, and the permanent magnet 22 is disposed on the inner stator core 21 . As shown in FIG. 2, the inner stator 20 is mainly composed of an inner stator core 21 and a permanent magnet 22. The inner stator core 21 can also be processed from a high magnetic material, and the permanent magnet 22 is disposed on the inner stator core. 21, in the circumferential direction of the motor 100, the permanent magnets 22 are evenly spaced on the inner stator core 21, and the permanent magnets 22 are parallel magnetized, that is, the permanent magnets 22 of the same polarity are relatively uniform. Arranged on the inner stator core 21 to produce an equivalent permanent magnetic field.
优选地,每个外定子分块产生的磁场的极对数为ps,内定子20的永磁体22的数量为npm0且每个内定子分块产生的磁场的极对数为pf=npm0/2,转子30的导磁铁芯31的数量为 pr且满足:pr=n0|ps±pf|,其中,n0为沿电机100的周向连接成闭环形所需的外定子分块的数量。Preferably, the number of pole pairs of the magnetic field generated by each outer stator block is ps, the number of permanent magnets 22 of the inner stator 20 is npm0, and the number of pole pairs of the magnetic field generated by each inner stator block is pf=npm0/2 The number of the conductive cores 31 of the rotor 30 is Pr satisfies: pr = n0 | ps ± pf|, where n0 is the number of outer stator segments required to be connected in a closed loop shape along the circumferential direction of the motor 100.
例如,当给定子绕组12通入对应相数的驱动电流(如三相定子绕组通入三相电流)时,每个外定子分块的定子绕组12产生极对数为ps的磁场,相对应地,内定子20永磁体22数量为npm0,每个内定子分块的永磁体22产生的等效永磁磁场的极对数为pf=npm0/2,即每个内定子分块的永磁体22产生的磁场极对数是内定子20永磁体22个数的一半。For example, when the stator winding 12 is supplied with a drive current corresponding to the number of phases (for example, a three-phase stator winding is supplied with a three-phase current), the stator winding 12 of each outer stator block generates a magnetic field having a pole-number ps, corresponding to The number of permanent magnets 22 of the inner stator 20 is npm0, and the number of pole pairs of the equivalent permanent magnetic field generated by the permanent magnets 22 of each inner stator block is pf=npm0/2, that is, the permanent magnet of each inner stator block. The magnetic pole pair generated by 22 is half of the number of permanent magnets 22 of the inner stator 20.
此外,转子30具有pr个导磁铁芯31,并且导磁铁芯31的数量pr应该满足pr=n0|ps±pf|,即转子30的导磁铁芯31数量等于沿电机100的周向连接成闭环形所需的外定子分块的数量与每个外定子10产生磁场极对数和每个内定子20产生磁场极对数的和或者差的绝对值的乘积,也可说成为,转子30的导磁铁芯31数量是每个外定子10产生磁场极对数和每个内定子20产生磁场极对数的和或者差的绝对值的n0倍(n0为沿电机100的周向连接成闭环形所需的外定子分块的数量),如转子30导磁铁芯31的数量为pr=30,满足公式pr=n0|ps±pf|。Further, the rotor 30 has pr magnet cores 31, and the number pr of the cores 31 should satisfy pr = n0 | ps ± pf|, that is, the number of the cores 31 of the rotor 30 is equal to the closed loop in the circumferential direction of the motor 100. The number of outer stator segments required for the shape is the product of the number of pairs of magnetic poles generated by each outer stator 10 and the absolute value of the sum of the logarithms of the magnetic poles generated by each inner stator 20, and it can be said that the rotor 30 is The number of the conductive cores 31 is n0 times the absolute value of the sum of the magnetic poles generated by each outer stator 10 and the logarithm of the magnetic poles generated by each inner stator 20 (n0 is connected in a closed loop shape along the circumferential direction of the motor 100). The number of outer stator segments required, such as the number of magnet cores 31 of the rotor 30, is pr = 30, which satisfies the formula pr = n0 | ps ± pf |.
需要说明的是,上述实施例中的电机100主要包括三层结构,即外定子10、转子30和内定子20,其中外定子10包括外定子导磁铁芯11和定子绕组12,即外定子10为定子绕组励磁侧,内定子20包括内定子导磁铁芯21和永磁体22,即内定子20为定子永磁励磁侧,定子绕组励磁侧和定子永磁励磁侧作为定子的组成部分,可以分别布置在电机100径向的最外层和最内层,也可以相反布置,即定子绕组励磁侧布置在最电机100径向的最内层,定子永磁励磁侧布置在电机100径向的最外层,转子30位于定子绕组励磁侧和定子永磁励磁侧的中间。It should be noted that the motor 100 in the above embodiment mainly includes a three-layer structure, that is, an outer stator 10, a rotor 30, and an inner stator 20, wherein the outer stator 10 includes an outer stator core 11 and a stator winding 12, that is, the outer stator 10 For the excitation side of the stator winding, the inner stator 20 includes an inner stator core 21 and a permanent magnet 22, that is, the inner stator 20 is a permanent magnet excitation side of the stator, and the excitation side of the stator winding and the permanent magnet excitation side of the stator are used as components of the stator, respectively. The outermost layer and the innermost layer disposed radially in the motor 100 may also be arranged oppositely, that is, the excitation side of the stator winding is disposed at the innermost layer in the radial direction of the most motor 100, and the permanent magnet excitation side of the stator is disposed in the radial direction of the motor 100. The outer layer, the rotor 30 is located between the excitation side of the stator winding and the excitation side of the permanent magnet of the stator.
在本发明的另一些具体实施方式中,内定子分块包括:内定子导磁铁芯21和定子绕组23,定子绕组23绕制在内定子导磁铁芯21上,外定子分块包括:外定子导磁铁芯11和永磁体13,永磁体13设在外定子导磁铁芯11上。In still other embodiments of the present invention, the inner stator block includes: an inner stator magnet core 21 and a stator winding 23, the stator winding 23 is wound on the inner stator core 21, and the outer stator block includes: an outer stator The magnetic core 11 and the permanent magnet 13 are provided on the outer stator core 11 .
换句话说,通过将上述实施例的外定子10与内定子20的位置相反布置,也就是说,图1中的外定子10布置为图3中的内定子20,图1中的内定子20布置为图3中的外定子,图3至图5中的外定子为定子永磁励磁侧,内定子20为定子绕组励磁侧。In other words, by arranging the outer stator 10 of the above embodiment opposite to the position of the inner stator 20, that is, the outer stator 10 of Fig. 1 is arranged as the inner stator 20 of Fig. 3, the inner stator 20 of Fig. 1. Arranged as the outer stator in FIG. 3, the outer stator in FIGS. 3 to 5 is the stator permanent magnet excitation side, and the inner stator 20 is the stator winding excitation side.
进一步地,每个内定子分块产生的磁场的极对数为ps,外定子的永磁体13的数量为npm0且每个外定子分块产生的磁场的极对数为pf=npm0/2,转子30的导磁铁芯31的数量为pr且满足:pr=n0|ps±pf|,其中,n0为沿电机100的周向连接成闭环形所需的内定子分块的数量。Further, the number of pole pairs of the magnetic field generated by each inner stator block is ps, the number of permanent magnets 13 of the outer stator is npm0, and the number of pole pairs of the magnetic field generated by each outer stator block is pf=npm0/2. The number of the conductive cores 31 of the rotor 30 is pr and satisfies: pr = n0 | ps ± pf|, where n0 is the number of inner stator segments required to be connected in a closed loop shape along the circumferential direction of the motor 100.
可以理解的是,通过相反布置后的内定子与外定子,每个内定子分块的定子绕组23产生的磁场极对数表示为ps,外定子10上的安装的永磁体13数量为npm0,每个外定子分块 上永磁体13产生磁场的极对数为外定子10上安放的永磁体13个数的一半,转子30的导磁铁芯31数量为每个内定子分块产生的磁场极对数与每个外定子分块产生磁场极对数和或差的n0倍,其中,n0为沿电机100的周向连接成闭环形所需的内定子分块的数量。It can be understood that, by the oppositely arranged inner and outer stators, the pole pair of the magnetic field generated by the stator windings 23 of each inner stator block is expressed as ps, and the number of mounted permanent magnets 13 on the outer stator 10 is npm0. Each outer stator block The number of pole pairs generated by the upper permanent magnet 13 is half of the number of permanent magnets 13 placed on the outer stator 10. The number of the magnetic cores 31 of the rotor 30 is the number of magnetic pole pairs generated by each inner stator block and each outer The stator segments produce n0 times the logarithm and/or difference of the magnetic field poles, where n0 is the number of inner stator segments required to connect in a closed loop shape along the circumference of the motor 100.
此外,电机100还包括:定子固定板60和转子固定板70,内定子导磁铁芯21在电机100的径向上位于外定子导磁铁芯11的内侧且与外定子导磁铁芯11间隔设置,转子固定板70与定子固定板60沿电机100的轴向间隔开布置且与输出轴40相连,转子30设在转子固定板70上。Further, the motor 100 further includes a stator fixing plate 60 and a rotor fixing plate 70 which are located inside the outer stator core 11 and radially spaced apart from the outer stator core 11 in the radial direction of the motor 100, and the rotor The fixing plate 70 and the stator fixing plate 60 are arranged spaced apart in the axial direction of the motor 100 and connected to the output shaft 40, and the rotor 30 is provided on the rotor fixing plate 70.
具体地,如图1和图3所示,电机100还包括定子固定板60和转子固定板70,在电机100的径向上,依次由外到内设置有外定子导磁铁芯11、转子30及内定子导磁铁芯21,即外定子导磁铁芯11位于最外层,内定子导磁铁芯21位于最内层,外定子导磁铁芯11与内定子导磁铁芯21之间间隔一定间隙,并在该间隔处设置有转子30。Specifically, as shown in FIG. 1 and FIG. 3, the motor 100 further includes a stator fixing plate 60 and a rotor fixing plate 70. In the radial direction of the motor 100, an outer stator core 11 and a rotor 30 are sequentially disposed from the outside to the inside. The inner stator magnet core 21, that is, the outer stator core 11 is located at the outermost layer, the inner stator core 21 is located at the innermost layer, and the outer stator core 11 and the inner stator core 21 are separated by a certain gap, and A rotor 30 is provided at this interval.
外定子导磁铁芯11和内定子导磁铁芯21分别安放在定子固定板60上,在定子固定板60的底部中心处连接有输出轴40和轴承50,转子固定板70在输出轴40的轴向上与定子固定板60间隔布置,转子固定板70位于定子固定板60的上方,转子固定板70分别与输出轴40和转子30相连接,转子30通过转子固定板70可以带动输出轴40转动,输出轴40通过轴承50与定子固定板60保持旋转的独立性,此外,定子固定板60起到承载上端部件的作用。The outer stator core 11 and the inner stator core 21 are respectively placed on the stator fixing plate 60. At the bottom center of the stator fixing plate 60, an output shaft 40 and a bearing 50 are connected, and the rotor fixing plate 70 is at the axis of the output shaft 40. Arranged upwardly from the stator fixing plate 60, the rotor fixing plate 70 is located above the stator fixing plate 60, the rotor fixing plate 70 is respectively connected with the output shaft 40 and the rotor 30, and the rotor 30 can drive the output shaft 40 to rotate through the rotor fixing plate 70. The output shaft 40 maintains rotational independence with the stator fixing plate 60 through the bearing 50. Further, the stator fixing plate 60 functions to carry the upper end member.
优选地,外定子10的中心轴线、内定子20的中心轴线和转子30的中心轴线重合。Preferably, the central axis of the outer stator 10, the central axis of the inner stator 20, and the central axis of the rotor 30 coincide.
如图2所示,多个外定子分块和多个内定子分块分别沿着电机100的周向均匀间隔布置,转子30呈封闭的环形,由外定子10构成的环形,转子30的封闭环形及内定子20构成的环形的三个环形的圆心重合(即图2中输出轴40的位置),即外定子10的中心轴线、内定子20的中心轴线与转子30的中心轴线为同一中心轴线。As shown in FIG. 2, a plurality of outer stator segments and a plurality of inner stator segments are respectively evenly spaced along the circumferential direction of the motor 100, the rotor 30 has a closed annular shape, a ring formed by the outer stator 10, and the rotor 30 is closed. The annular and inner stators 20 are formed by the annular three annular centers (i.e., the position of the output shaft 40 in Fig. 2), that is, the central axis of the outer stator 10, the central axis of the inner stator 20 and the central axis of the rotor 30 are the same center. Axis.
下面结合具体实施例详细描述根据本发明实施例的电机100。The motor 100 according to an embodiment of the present invention will be described in detail below with reference to specific embodiments.
如图1至图5所示,根据本发明实施例的电机100包括:外定子10、内定子20、可旋转的转子30、输出轴40、轴承50、定子固定板60和转子固定板70。As shown in FIGS. 1 to 5, a motor 100 according to an embodiment of the present invention includes an outer stator 10, an inner stator 20, a rotatable rotor 30, an output shaft 40, a bearing 50, a stator fixing plate 60, and a rotor fixing plate 70.
具体地,外定子10由多个定子分块组成(图2中所示为3个外定子10分块外定子分块),内定子20由多个定子分块组成(图2中所示为3个内定子20分块内定子分块),3个外定子10分块外定子分块与3个内定子20分块内定子分块分别沿着电机100的周向均匀间隔排布,在电机100的径向上,外定子10分块外定子分块与内定子20分块内定子分块间隔设置,而且位置一一对应,外定子10分块外定子分块位于内定子20分块内定子分块的外侧,转子30设置在外定子10由内定子20之间,形成封闭的环形,在电机100的径向上,从外到内依次为外定子10、转子30和内定子20。 Specifically, the outer stator 10 is composed of a plurality of stator blocks (three outer stators 10 are shown as outer stator blocks in FIG. 2), and the inner stator 20 is composed of a plurality of stator blocks (shown in FIG. 2). 3 inner stators 20 block inner stator blocks), 3 outer stators 10 block outer stator blocks and 3 inner stators 20 block inner stator blocks are evenly spaced along the circumferential direction of the motor 100, respectively In the radial direction of the motor 100, the outer stator block of the outer stator 10 is spaced apart from the stator block of the inner stator 20, and the positions are one-to-one correspondence, and the outer stator 10 block outer stator block is located in the inner stator 20 block. On the outer side of the sub-block, the rotor 30 is disposed between the outer stator 10 and the inner stator 20 to form a closed loop. In the radial direction of the motor 100, the outer stator 10, the rotor 30 and the inner stator 20 are sequentially from the outside to the inside.
外定子10和内定子20安放在定子固定板60上,输出轴40位于定子固定板60的中心,通过轴承50与定子固定板60相连接,在输出轴40的轴向上,转子固定板70与定子固定板60间隔布置,转子固定板70与输出轴40和转子30相连接。The outer stator 10 and the inner stator 20 are placed on the stator fixing plate 60, and the output shaft 40 is located at the center of the stator fixing plate 60, and is coupled to the stator fixing plate 60 through a bearing 50. In the axial direction of the output shaft 40, the rotor fixing plate 70 Arranged spaced apart from the stator retaining plate 60, the rotor retaining plate 70 is coupled to the output shaft 40 and the rotor 30.
如图1和图2所示,在本实施例中,需要进一步说明的是,该电机100主要包括三层结构,即定子绕组励磁侧、定子永磁励磁侧,以及磁阻转子30,定子绕组励磁侧和定子永磁励磁侧作为定子的组成部分,可以分别布置在电机100径向的最外层和最内层,也可以反之,即分别布置在最内层和最外层,转子30位于定子绕组励磁侧和定子永磁励磁侧的中间,而且通过固定的空气间隙与之保持间隔。As shown in FIG. 1 and FIG. 2, in the embodiment, it is further illustrated that the motor 100 mainly includes a three-layer structure, that is, a stator winding excitation side, a stator permanent magnet excitation side, and a reluctance rotor 30, and a stator winding. The excitation side and the stator permanent magnet excitation side are formed as components of the stator, and may be respectively arranged in the outermost layer and the innermost layer in the radial direction of the motor 100, or vice versa, that is, respectively arranged in the innermost layer and the outermost layer, and the rotor 30 is located. The center of the stator winding excitation side and the stator permanent magnet excitation side are spaced apart by a fixed air gap.
定子绕组励磁侧(即外定子10)由高导磁材料构成分块的外定子导磁铁芯11和在其上绕设的定子绕组12构成,定子绕组12可以为单相或多相,其实际分块数n1与其沿电机100周向填满整圆所需的理论分块数n0(即一个完整圆周的定子导磁铁芯所对应的外定子导磁铁芯11的个数)满足1≤n1<n0,定子绕组12线圈的跨距可以为1或任意与分块导磁铁芯11齿数相匹配的正整数,每一分块导磁铁芯11的齿数为Ns0,槽距角满足α0=2π/Ns0/n0,当通入与定子绕组12相对应相数的驱动电流时,每一个定子绕组励磁侧分块产生极对数为ps的磁场。The excitation side of the stator winding (ie, the outer stator 10) is composed of a high-magnetic material composed of a segmented outer stator core 11 and a stator winding 12 wound thereon. The stator winding 12 may be single-phase or multi-phase, and the actual The number of blocks n1 and the number of theoretical blocks n0 required to fill the entire circle along the circumference of the motor 100 (i.e., the number of outer stator cores 11 corresponding to a stator core of a complete circumference) satisfy 1 ≤ n1 < N0, the span of the coil of the stator winding 12 may be 1 or any positive integer matching the number of teeth of the segmented magnetic core 11 , the number of teeth of each of the divided magnetic cores 11 is Ns0, and the groove angle satisfies α0=2π/Ns0 /n0, when a drive current corresponding to the number of phases of the stator winding 12 is supplied, each of the stator winding excitation side blocks generates a magnetic field having a pole-number ps.
定子永磁励磁侧(即内定子20)由高导磁材料构成的内定子导磁铁芯21和永磁体22构成,永磁体22以交替极性的方式沿电机100周向均匀排布,可以采用转子30的任何安装形式,即内置式(IPM),表面贴装式(SPM),表面嵌装式(Inset-SPM)等等。定子永磁侧的理论分块数为n0(即一个完整圆周的定子导磁铁芯所对应的内定子导磁铁芯21的个数),其实际分块数与定子绕组励磁侧相同,定子永磁励磁侧的永磁体22数为npm0,每一个分块的定子永磁励磁侧产生的等效磁场极对数为pf=npm0/2。The permanent magnet excitation side of the stator (ie, the inner stator 20) is composed of an inner stator core 21 and a permanent magnet 22 made of a highly magnetic material, and the permanent magnets 22 are evenly arranged along the circumference of the motor 100 in an alternating polarity manner. Any form of mounting of the rotor 30, namely built-in (IPM), surface mount (SPM), surface mount (Inset-SPM), and the like. The theoretical number of blocks on the permanent magnet side of the stator is n0 (that is, the number of inner stator cores 21 corresponding to the stator core of a complete circumference), and the actual number of blocks is the same as the excitation side of the stator winding. The number of permanent magnets 22 on the excitation side is npm0, and the logarithm of the equivalent magnetic field generated by the excitation side of the stator permanent magnet of each block is pf=npm0/2.
磁阻转子(即转子30)由高导磁材料构成的导磁铁芯31和非导磁材料构成的非导磁间隔块32交替排布构成一个完整的圆周(封闭环形),不采用分块的形式,磁阻转子的铁芯块数为pr。优选地,磁阻转子的导磁铁芯31数量应该满足pr=n0|ps±pf|。磁阻转子通过转子固定板70和输出轴40直接相连接,作为电机100的转矩输出元件。The reluctance rotor (ie, the rotor 30) is alternately arranged by a conductive core 31 made of a highly magnetically permeable material and a non-magnetically permeable spacer 32 composed of a non-magnetic material to form a complete circumference (closed loop) without using a block. In the form, the number of core blocks of the reluctance rotor is pr. Preferably, the number of cores 31 of the reluctance rotor should satisfy pr = n0 | ps ± pf |. The reluctance rotor is directly connected to the output shaft 40 through the rotor fixing plate 70 as a torque output element of the motor 100.
下面根据结合多个实施例对本发明实施例的电机100进行详细描述。The motor 100 of the embodiment of the present invention will be described in detail below in conjunction with a plurality of embodiments.
实施例一Embodiment 1
如图1和图2所示,外定子10排布在电机100径向三层结构的最外侧,内定子20排布在电机100径向三层结构的最内侧,转子30位于两层定子的中间,并与两层定子之间保持一定的间隙,外定子10和内定子20分别安放在定子固定板60上,转子30通过转子固定板70与输出轴40直接连接,输出轴40通过轴承50与定子固定板60相连接,并保持旋转独立性。 As shown in FIGS. 1 and 2, the outer stator 10 is arranged on the outermost side of the radial three-layer structure of the motor 100, the inner stator 20 is arranged on the innermost side of the radial three-layer structure of the motor 100, and the rotor 30 is located on the two-layer stator. In the middle, and maintaining a certain gap between the two layers of stators, the outer stator 10 and the inner stator 20 are respectively placed on the stator fixing plate 60, the rotor 30 is directly connected to the output shaft 40 through the rotor fixing plate 70, and the output shaft 40 passes through the bearing 50. It is connected to the stator fixing plate 60 and maintains rotational independence.
外定子10的实际分块数n1=3,理论分块数n0=12,外定子10由外定子导磁铁芯11和绕制在其上的定子绕组12构成,每个外定子分块的齿数Ns0=3,定子绕组12为三相绕组,绕组线圈跨距为1,当注入三相电流时,每个外定子分块产生极对数ps=1的磁场。The actual number of blocks of the outer stator 10 is n1=3, the number of theoretical blocks n0=12, and the outer stator 10 is composed of the outer stator core 11 and the stator winding 12 wound thereon, and the number of teeth of each outer stator block Ns0=3, the stator winding 12 is a three-phase winding, and the winding coil span is 1. When the three-phase current is injected, each outer stator block generates a magnetic field with a pole pair number ps=1.
内定子20的分块数也为n1=3,由内定子导磁铁芯21和永磁体22构成,永磁体22采用平行充磁方式,以相同极性永磁体22相对的方式均匀安放在内定子导磁铁芯21中,产生的等效永磁磁场极对数pf=1.5,转子30由导磁铁芯31以及非导磁间隔块32构成,转子30导磁铁芯31的块数pr=30,满足优选公式,即pr=n0|ps±pf|。The number of blocks of the inner stator 20 is also n1=3, which is composed of the inner stator core 21 and the permanent magnet 22. The permanent magnets 22 are parallel magnetized, and are uniformly placed on the inner stator in the same manner as the permanent magnets 22 of the same polarity. In the magnetic core 21, the equivalent permanent magnet magnetic field has a logarithm of pf=1.5, the rotor 30 is composed of a magnetic core 31 and a non-magnetic spacer 32, and the number of blocks of the magnetic core 31 of the rotor 30 is pr=30, which satisfies The preferred formula is pr=n0|ps±pf|.
实施例二Embodiment 2
如图3至图5所示,外定子10排布在电机100径向三层结构的最外侧,内定子20排布在电机100径向三层结构的最内侧,转子30位于两层定子的中间,并与两层定子保持一定的间隙,外定子10和内定子20安放在定子固定板60上,转子30通过转子固定板70与输出轴40直接连接,输出轴40通过轴承50与定子固定板60相连接,并保持旋转独立性。As shown in FIGS. 3 to 5, the outer stator 10 is arranged on the outermost side of the radial three-layer structure of the motor 100, the inner stator 20 is arranged on the innermost side of the radial three-layer structure of the motor 100, and the rotor 30 is located on the two-layer stator. In the middle, and maintaining a certain gap with the two-layer stator, the outer stator 10 and the inner stator 20 are placed on the stator fixing plate 60, the rotor 30 is directly connected to the output shaft 40 through the rotor fixing plate 70, and the output shaft 40 is fixed to the stator through the bearing 50. The plates 60 are connected and maintain rotational independence.
内定子20的实际分块数n1=1,理论分块数n0=16,内定子20由内定子导磁铁芯21和绕制在其上的定子绕组23构成,每个内定子分块的齿数Ns0=3,定子绕组23为三相绕组,绕组线圈跨距为1,当注入三相电流时,每个内定子分块产生极对数ps=1的磁场。The actual number of blocks of the inner stator 20 is n1=1, the number of theoretical blocks n0=16, and the inner stator 20 is composed of the inner stator core 21 and the stator winding 23 wound thereon, and the number of teeth of each inner stator block Ns0=3, the stator winding 23 is a three-phase winding, and the winding coil span is 1. When the three-phase current is injected, each inner stator block generates a magnetic field with a pole pair number ps=1.
外定子10的分块数也为n1=1,由外定子导磁铁芯11和永磁体13构成,永磁体13采用平行充磁,以相同极性永磁体13相对的方式均匀安放在每个外定子10中,产生的等效永磁磁场极对数pf=3。转子30由导磁铁芯31以及非导磁间隔块32构成,转子30的导磁铁芯31的块数pr=64,满足优选公式,即pr=n0|ps±pf|。The number of blocks of the outer stator 10 is also n1=1, which is composed of the outer stator core 11 and the permanent magnet 13. The permanent magnets 13 are parallel magnetized and uniformly placed in the opposite direction to the permanent magnets 13 of the same polarity. In the stator 10, the equivalent permanent magnetic field generated by the pole pair pf = 3. The rotor 30 is composed of a core 51 and a non-magnetic spacer block 32. The number of blocks of the core 30 of the rotor 30 is pr=64, which satisfies a preferred formula, that is, pr=n0|ps±pf|.
此外,外定子10的外定子导磁铁芯11、内定子20的内定子导磁铁芯21以及转子30的导磁铁芯可以采用硅钢片、钴钢片、坡莫合金、SMC等高磁导率材料制作,但本发明不仅限于此。定子绕组23可以为单相或多相,定子绕组23的形式可以为分数槽绕组或整数槽绕组,定子绕组23的材料可以采用铜漆包线、铝漆包线等,但本发明不对此作出具体限定。In addition, the outer stator core 19 of the outer stator 10, the inner stator core 21 of the inner stator 20, and the core of the rotor 30 may be made of a high magnetic permeability material such as silicon steel sheet, cobalt steel sheet, permalloy, or SMC. Manufactured, but the invention is not limited to this. The stator windings 23 may be single-phase or multi-phase. The stator windings 23 may be in the form of fractional-slot windings or integer-slot windings. The material of the stator windings 23 may be copper enameled wire, aluminum enameled wire, etc., but the invention is not limited thereto.
内定子20可以采用常规永磁转子30的任何安装形式,即内置式(IPM),表面贴装式(SPM),表面嵌装式(Inset-SPM)等,永磁体13可以采用铝铁硼、铁氧体、钐钴、铝镍钴等高矫顽力永磁材料制成,本发明也不仅限于此。The inner stator 20 can adopt any mounting form of the conventional permanent magnet rotor 30, that is, built-in type (IPM), surface mount type (SPM), surface mount type (Inset-SPM), etc., and the permanent magnet 13 can be made of aluminum-iron-boron, The high coercive permanent magnet material such as ferrite, samarium cobalt, and aluminum nickel cobalt is used, and the present invention is not limited thereto.
本发明的转子30的外径可以随着负载类型自由选取,不会明显改变定子体积,且在转子30外径改变的前提下,不会明显影响永磁体13的用量。在一定的定子励磁磁场作用下,电机100输出转矩与电机100的外径成平方关系增大,因此,可以在不明显改变成本及定子体积的情况下,通过增加转子30的外径,极大的提高电机100的转矩密度。The outer diameter of the rotor 30 of the present invention can be freely selected with the type of load without significantly changing the stator volume, and does not significantly affect the amount of the permanent magnet 13 under the premise that the outer diameter of the rotor 30 is changed. Under a certain stator excitation magnetic field, the output torque of the motor 100 is increased in a square relationship with the outer diameter of the motor 100. Therefore, the outer diameter of the rotor 30 can be increased without significantly changing the cost and the stator volume. The torque density of the motor 100 is greatly increased.
由此,通过沿电机100的周向设置一一对应且数量相等的外定子分块和内定子分块,在电机100的径向方向上内定子20与外定子10间隔开设置,且内定子20位于外定子10的内 侧,转子30形成为沿电机100周向延伸的闭环形,设置在外定子10与内定子20之间,这样在转子30外径改变时,定子的体积不会发生明显变化,节约了定子部分的成本,同时提高了低速大转矩驱动场合下的电机100效率,结构简单,可以应用于家用电器、电动汽车、风力发电等场合。该电机100的结构简单、系统效率高、节约成本、应用范围广。Thus, by providing one-to-one and equal number of outer stator segments and inner stator segments along the circumferential direction of the motor 100, the inner stator 20 is spaced apart from the outer stator 10 in the radial direction of the motor 100, and the inner stator 20 is located inside the outer stator 10 On the side, the rotor 30 is formed in a closed loop shape extending in the circumferential direction of the motor 100, and is disposed between the outer stator 10 and the inner stator 20, so that when the outer diameter of the rotor 30 is changed, the volume of the stator does not change significantly, and the stator portion is saved. The cost and the efficiency of the motor 100 in the low-speed and large-torque driving are improved, and the structure is simple, and can be applied to household appliances, electric vehicles, wind power generation and the like. The motor 100 has a simple structure, high system efficiency, cost saving, and wide application range.
根据本发明实施例的电机100其他构成以及操作对于本领域普通技术人员而言都是已知的,这里不再详细描述。Other configurations and operations of the motor 100 in accordance with embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.
在本发明的描述中,需要理解的是,术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系,仅是为了便于描述本发明和简化描述,而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作,因此不能理解为对本发明的限制。In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " After, "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inside", "Outside", "Clockwise", "Counterclockwise", "Axial", The orientation or positional relationship of the "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description of the present invention and simplified description, and does not indicate or imply the indicated device or component. It must be constructed and operated in a particular orientation, and is not to be construed as limiting the invention.
此外,术语“第一”、“第二”仅用于描述目的,而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此,限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本发明的描述中,“多个”的含义是至少两个,例如两个,三个等,除非另有明确具体的限定。Moreover, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" or "second" may include at least one of the features, either explicitly or implicitly. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless specifically defined otherwise.
在本发明中,除非另有明确的规定和限定,术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解,例如,可以是固定连接,也可以是可拆卸连接,或成一体;可以是机械连接,也可以是电连接或彼此可通讯;可以是直接相连,也可以通过中间媒介间接相连,可以是两个元件内部的连通或两个元件的相互作用关系,除非另有明确的限定。对于本领域的普通技术人员而言,可以根据具体情况理解上述术语在本发明中的具体含义。In the present invention, the terms "installation", "connected", "connected", "fixed" and the like shall be understood broadly, and may be either a fixed connection or a detachable connection, unless explicitly stated and defined otherwise. Or in one piece; it may be a mechanical connection, or it may be an electrical connection or a communication with each other; it may be directly connected or indirectly connected through an intermediate medium, and may be an internal connection of two elements or an interaction relationship between two elements. Unless otherwise expressly defined. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.
在本说明书的描述中,参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中,对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且,描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外,在不相互矛盾的情况下,本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。In the description of the present specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like means a specific feature described in connection with the embodiment or example. A structure, material or feature is included in at least one embodiment or example of the invention. In the present specification, the schematic representation of the above terms is not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, various embodiments or examples described in the specification, as well as features of various embodiments or examples, may be combined and combined.
尽管上面已经示出和描述了本发明的实施例,可以理解的是,上述实施例是示例性的,不能理解为对本发明的限制,本领域的普通技术人员在本发明的范围内可以对上述实施例进行变化、修改、替换和变型。 Although the embodiments of the present invention have been shown and described, it is understood that the above-described embodiments are illustrative and are not to be construed as limiting the scope of the invention. The embodiments are subject to variations, modifications, substitutions and variations.

Claims (13)

  1. 一种电机,其特征在于,包括:A motor characterized in that:
    外定子,所述外定子包括至少一个外定子分块,所述外定子分块的数量小于沿所述电机的周向连接成闭环形所需的外定子分块的数量;An outer stator comprising at least one outer stator block, the number of outer stator segments being less than the number of outer stator segments required to be connected in a closed loop shape along a circumferential direction of the motor;
    内定子,所述内定子在所述电机的径向上位于所述外定子的内侧且与所述外定子间隔设置,所述内定子包括至少一个内定分块,所述内定子分块的数量与所述外定子分块的数量相同;An inner stator located inside the outer stator and spaced apart from the outer stator in a radial direction of the motor, the inner stator including at least one inner block, the number of inner stator blocks and The number of the outer stator blocks is the same;
    可旋转的转子,所述转子为沿所述电机的周向延伸的闭环形,所述转子在所述电机的径向上位于所述外定子的内侧以及所述内定子的外侧。A rotatable rotor having a closed loop shape extending in a circumferential direction of the motor, the rotor being located inside the outer stator and outside of the inner stator in a radial direction of the motor.
  2. 根据权利要求1所述的电机,其特征在于,所述外定子分块为多个且沿所述电机的周向均匀排布,所述内定子分块为多个且沿所述电机的周向均匀排布。The motor according to claim 1, wherein said outer stator is divided into a plurality of pieces and uniformly arranged along a circumferential direction of said motor, said inner stator being divided into a plurality of sections and along a circumference of said motor Arrange evenly.
  3. 根据权利要求1或2所述的电机,其特征在于,所述外定子分块和所述内定子分块沿所述电机的周向一一相对地设置。The motor according to claim 1 or 2, wherein said outer stator block and said inner stator block are disposed one on another in the circumferential direction of said motor.
  4. 根据权利要求1-3中任一项所述的电机,其特征在于,所述转子包括:The electric machine according to any one of claims 1 to 3, wherein the rotor comprises:
    多个导磁铁芯;a plurality of magnetic cores;
    多个非导磁间隔块,多个所述导磁铁芯和多个所述非导磁间隔块沿所述电机的周向交替排列。a plurality of non-magnetically-permeable spacer blocks, a plurality of the magnetic conductive cores and a plurality of the non-magnetic magnetic spacer blocks are alternately arranged along a circumferential direction of the motor.
  5. 根据权利要求4所述的电机,其特征在于,所述外定子分块包括:The electric machine according to claim 4, wherein said outer stator block comprises:
    外定子导磁铁芯;External stator core;
    定子绕组,所述定子绕组绕制在所述外定子导磁铁芯上。A stator winding wound on the outer stator core.
  6. 根据权利要求5所述的电机,其特征在于,所述内定子分块包括:The electric machine according to claim 5, wherein said inner stator block comprises:
    内定子导磁铁芯;Inner stator core;
    永磁体,所述永磁体设在所述内定子导磁铁芯上。a permanent magnet, the permanent magnet being disposed on the inner stator core.
  7. 根据权利要求6所述的电机,其特征在于,每个所述外定子分块产生的磁场的极对数为ps,所述内定子的永磁体的数量为npm0且每个所述内定子分块产生的磁场的极对数为pf=npm0/2,所述转子的导磁铁芯的数量为pr且满足:The motor according to claim 6, wherein each of said outer stator segments generates a magnetic field having a pole pair number ps, said inner stator having a number of permanent magnets npm0 and each said inner stator portion The pole number of the magnetic field generated by the block is pf=npm0/2, and the number of cores of the rotor is pr and satisfies:
    pr=n0|ps±pf|,其中,n0为沿所述电机的周向连接成闭环形所需的外定子分块的数量。Pr=n0|ps±pf|, where n0 is the number of outer stator segments required to be connected in a closed loop shape along the circumferential direction of the motor.
  8. 根据权利要求4所述的电机,其特征在于,所述内定子分块包括:The electric machine according to claim 4, wherein said inner stator block comprises:
    内定子导磁铁芯;Inner stator core;
    定子绕组,所述定子绕组绕制在所述内定子导磁铁芯上。A stator winding wound on the inner stator core.
  9. 根据权利要求8所述的电机,其特征在于,所述外定子分块包括: The electric machine of claim 8 wherein said outer stator block comprises:
    外定子导磁铁芯;External stator core;
    永磁体,所述永磁体设在所述外定子导磁铁芯上。a permanent magnet, the permanent magnet being disposed on the outer stator core.
  10. 根据权利要求9所述的电机,其特征在于,每个所述内定子分块产生的磁场的极对数为ps,所述外定子的永磁体的数量为npm0且每个所述外定子分块产生的磁场的极对数为pf=npm0/2,所述转子的导磁铁芯的数量为pr且满足:The motor according to claim 9, wherein each of said inner stator segments generates a magnetic field having a pole pair number ps, said outer stator having a number of permanent magnets npm0 and each said outer stator portion The pole number of the magnetic field generated by the block is pf=npm0/2, and the number of cores of the rotor is pr and satisfies:
    pr=n0|ps±pf|,其中,n0为沿所述电机的周向连接成闭环形所需的内定子分块的数量。Pr=n0|ps±pf|, where n0 is the number of inner stator segments required to be connected in a closed loop shape along the circumferential direction of the motor.
  11. 根据权利要求6或9所述的电机,其特征在于,还包括:The motor according to claim 6 or 9, further comprising:
    定子固定板,所述内定子导磁铁芯在所述电机的径向上位于所述外定子导磁铁芯的内侧且与所述外定子导磁铁芯间隔设置;a stator fixing plate, the inner stator core is located inside the outer stator core of the stator in a radial direction of the motor and spaced apart from the outer stator core;
    转子固定板,所述转子固定板与所述定子固定板沿所述电机的轴向间隔开布置且与所述输出轴相连,所述转子设在所述转子固定板上。a rotor fixing plate, the rotor fixing plate and the stator fixing plate are spaced apart from each other in an axial direction of the motor and connected to the output shaft, and the rotor is disposed on the rotor fixing plate.
  12. 根据权利要求5所述的电机,其特征在于,每个所述外定子分块具有多个定子齿和分别位于相邻定子齿之间的多个齿槽,每个所述外定子分块的定子齿的数量为Ns0,每个所述外定子分块的相邻齿槽的槽距角为α0且满足:The electric machine according to claim 5, wherein each of said outer stator segments has a plurality of stator teeth and a plurality of slots respectively located between adjacent stator teeth, each of said outer stator blocks The number of stator teeth is Ns0, and the pitch angle of adjacent slots of each of the outer stator blocks is α0 and satisfies:
    α0=2π/Ns0/n0,其中,n0为沿所述电机的周向连接成闭环形所需的外定子分块的数量。00 = 2π / Ns0 / n0, where n0 is the number of outer stator segments required to be connected in a closed loop shape along the circumferential direction of the motor.
  13. 根据权利要求1-12中任一项所述的电机,其特征在于,所述外定子的中心轴线、所述内定子的中心轴线和所述转子的中心轴线重合。 The electric machine according to any one of claims 1 to 12, characterized in that the central axis of the outer stator, the central axis of the inner stator and the central axis of the rotor coincide.
PCT/CN2016/109716 2016-10-31 2016-12-13 Motor WO2018076486A1 (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101577448A (en) * 2009-05-12 2009-11-11 中国电子科技集团公司第二十一研究所 Fan-shaped motor
US20100207474A1 (en) * 2009-02-06 2010-08-19 Denso Corporation Motor-generator having stator and inner and outer rotors
CN106026578A (en) * 2016-07-27 2016-10-12 东南大学 Reluctance rotor field modulation double-stator brushless doubly-fed motor
CN106208574A (en) * 2016-08-17 2016-12-07 上海交通大学 A kind of piecemeal rotator type bimorph transducer becomes magnetic flux reluctance motor
CN106374706A (en) * 2016-10-31 2017-02-01 广东威灵电机制造有限公司 Motor
CN206219838U (en) * 2016-10-31 2017-06-06 广东威灵电机制造有限公司 Washing machine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100207474A1 (en) * 2009-02-06 2010-08-19 Denso Corporation Motor-generator having stator and inner and outer rotors
CN101577448A (en) * 2009-05-12 2009-11-11 中国电子科技集团公司第二十一研究所 Fan-shaped motor
CN106026578A (en) * 2016-07-27 2016-10-12 东南大学 Reluctance rotor field modulation double-stator brushless doubly-fed motor
CN106208574A (en) * 2016-08-17 2016-12-07 上海交通大学 A kind of piecemeal rotator type bimorph transducer becomes magnetic flux reluctance motor
CN106374706A (en) * 2016-10-31 2017-02-01 广东威灵电机制造有限公司 Motor
CN206219838U (en) * 2016-10-31 2017-06-06 广东威灵电机制造有限公司 Washing machine

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