WO2022148341A1 - 一种双转子电机 - Google Patents

一种双转子电机 Download PDF

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Publication number
WO2022148341A1
WO2022148341A1 PCT/CN2022/070097 CN2022070097W WO2022148341A1 WO 2022148341 A1 WO2022148341 A1 WO 2022148341A1 CN 2022070097 W CN2022070097 W CN 2022070097W WO 2022148341 A1 WO2022148341 A1 WO 2022148341A1
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WO
WIPO (PCT)
Prior art keywords
rotor
phase
motor
iron core
stepping motor
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PCT/CN2022/070097
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English (en)
French (fr)
Inventor
彭光明
金万兵
林聪明
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上海鸣志电器股份有限公司
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Publication of WO2022148341A1 publication Critical patent/WO2022148341A1/zh

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K16/00—Machines with more than one rotor or stator
    • H02K16/02—Machines with one stator and two or more rotors
    • 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
    • H02K1/24—Rotor cores with salient poles ; Variable reluctance rotors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2706—Inner rotors
    • H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
    • H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information

Definitions

  • the present invention relates to a motor, in particular to a double-rotor motor.
  • the existing inner rotor hybrid stepping motor structure includes a first inner rotor stepping motor stator core 1, a first stator winding (not shown) in the stator core slot, an axial The first inner rotor stepping motor rotor core 2 and the second inner rotor stepping motor rotor core 3, which are stacked at a certain angle, and the first magnetic steel 4 in the middle of the inner rotor stepping motor rotor core (dotted circle) part);
  • the existing outer rotor hybrid stepping motor structure includes a second outer rotor stepping motor stator core 5, a second stator winding (not shown) in the stator core slot, The third stepper motor rotor iron core 6 and the fourth stepper motor rotor iron core 7, which are stacked at a certain angle axially staggered, and the second magnet steel 8 in the middle of the rotor iron core (dotted line circle part).
  • the structure of the existing inner rotor brushless motor includes a third brushless inner rotor motor stator core 9, a third stator winding (not shown) in the stator core slot, and a brushless inner rotor motor.
  • Rotor magnetic ring or magnetic tile 10 fifth brushless inner rotor motor rotor core 11, brushless inner rotor motor shaft 12;
  • the structure of the existing outer rotor brushless motor includes a brushless outer rotor motor Rotor yoke 13, brushless outer rotor motor rotor magnetic ring or magnetic tile 14, fourth brushless outer rotor motor stator core 15, fourth stator winding (not shown) in the stator core slot.
  • the above-mentioned inner rotor or outer rotor motor has a narrow scope of application, especially in the application of axial multi-layer motion, so how to combine the inner rotor and the outer rotor to reduce the axial size of the motor and make it Applicable to the application of axial multi-layer motion, it has become a technical problem that needs to be solved.
  • the stepper motor has a fast response and the speed of the brushless motor is high. Therefore, how to take into account the advantages of the stepper motor and the brushless motor has also become a technical problem that needs to be solved.
  • the purpose of the present invention is to provide a dual-rotor motor with low implementation cost, wide application range and more excellent performance in order to overcome the above-mentioned defects of the prior art.
  • a dual-rotor motor comprising a fifth stator core (17, 22) common to the inner and outer rotor motors, an inner rotor structure and an outer rotor structure, the inner rotor structure and the outer rotor mechanism Independent operation, the inner side of the fifth stator core (17, 22) is provided with an inner mechanism corresponding to the structure of the inner rotor, and the outer side of the fifth stator core (17, 22) is provided with a mechanism corresponding to the outer rotor structure.
  • Outer body comprising a fifth stator core (17, 22) common to the inner and outer rotor motors, an inner rotor structure and an outer rotor structure, the inner rotor structure and the outer rotor mechanism Independent operation, the inner side of the fifth stator core (17, 22) is provided with an inner mechanism corresponding to the structure of the inner rotor, and the outer side of the fifth stator core (17, 22) is provided with a mechanism corresponding to the outer rotor structure.
  • Outer body comprising a fifth stator
  • the inner rotor structure includes an inner rotor magnetic ring or a magnetic shoe (18) of a two-phase brushless motor and an inner rotor iron core (19) of a two-phase brushless motor.
  • the outer rotor structure is the outer rotor core (16) of the two-phase hybrid stepping motor;
  • the outer mechanism of the fifth stator iron core (17) is the two-phase pole teeth A1-A4 and B1 of the outer rotor hybrid stepping motor corresponding to the outer rotor iron core (16) of the two-phase hybrid stepping motor ⁇ B4;
  • the inner mechanism of the fifth stator iron core (17) is the two-phase pole teeth a1-a4 and b1- b4.
  • the inner rotor structure includes an inner rotor core (23) of a two-phase hybrid stepping motor, and the outer rotor structure includes a magnetic ring or a magnetic tile (23) of a two-phase outer rotor brushless motor. 21) and the rotor yoke (20) of the two-phase outer rotor brushless motor;
  • the outer mechanism of the fifth stator iron core (17) is the two-phase pole teeth A1 to A4 and B1 to the outer rotor brushless motor corresponding to the magnetic ring or the magnetic tile (21) of the two-phase outer rotor brushless motor. B4;
  • the inner mechanism of the fifth stator iron core (17) is the two-phase pole teeth a1-a4 and b1 of the inner rotor hybrid stepping motor corresponding to the inner rotor iron core (23) of the two-phase hybrid stepping motor ⁇ b4.
  • the inner rotor structure includes the inner rotor magnetic ring or the magnetic shoe of the three-phase brushless motor and the inner rotor iron core of the three-phase brushless motor, and the outer rotor structure is a two-phase hybrid step into the outer rotor core of the motor;
  • the outer mechanism of the fifth stator iron core (17) is the two-phase pole teeth A1-A4 and B1-B4 of the outer rotor hybrid stepping motor corresponding to the outer rotor iron core of the two-phase hybrid stepping motor;
  • the inner mechanism of the fifth stator iron core (17) is the three-phase pole teeth a1-a4, b1-b4 and c1 of the inner rotor brushless motor corresponding to the inner rotor magnetic ring or the magnetic tile of the three-phase brushless motor ⁇ c4.
  • the inner rotor structure includes the inner rotor magnetic ring or the magnetic shoe of the two-phase brushless motor and the inner rotor iron core of the two-phase brushless motor, and the outer rotor structure is a three-phase hybrid step into the outer rotor core of the motor;
  • the outer mechanism of the fifth stator iron core (17) is the three-phase pole teeth A1-A4, B1-B4 and the outer rotor hybrid stepping motor corresponding to the outer rotor iron core of the three-phase hybrid stepping motor.
  • the inner mechanism of the fifth stator core (17) is the two-phase pole teeth a1-a4 and b1-b4 of the inner rotor brushless motor corresponding to the inner rotor magnetic ring or the magnetic shoe of the two-phase brushless motor.
  • the inner rotor structure includes the inner rotor magnetic ring or the magnetic shoe of the three-phase brushless motor and the inner rotor iron core of the three-phase brushless motor, and the outer rotor structure is a three-phase hybrid step into the outer rotor core of the motor;
  • the outer mechanism of the fifth stator iron core (17) is the three-phase pole teeth A1-A4, B1-B4 and the outer rotor hybrid stepping motor corresponding to the outer rotor iron core of the three-phase hybrid stepping motor.
  • the inner mechanism of the fifth stator iron core (17) is the three-phase pole teeth a1-a4, b1-b4 and c1 of the inner rotor brushless motor corresponding to the inner rotor magnetic ring or the magnetic tile of the three-phase brushless motor ⁇ c4.
  • the inner rotor structure includes an inner rotor core of a three-phase hybrid stepping motor
  • the outer rotor structure includes a magnetic ring or a magnetic shoe of a two-phase outer rotor brushless motor and a two-phase outer rotor.
  • the outer mechanism of the fifth stator iron core (17) is the two-phase pole teeth A1-A4 and B1-B4 of the outer-rotor brushless motor corresponding to the magnetic ring or the magnetic tile of the two-phase outer-rotor brushless motor;
  • the inner mechanism of the fifth stator iron core (17) is the three-phase pole teeth a1-a4, b1-b4 and the inner rotor hybrid stepping motor corresponding to the inner rotor iron core of the three-phase hybrid stepping motor. c1 to c4.
  • the inner rotor structure includes an inner rotor core of a two-phase hybrid stepping motor
  • the outer rotor structure includes a magnetic ring or a magnetic shoe of a three-phase outer rotor brushless motor and a three-phase outer rotor.
  • the outer mechanism of the fifth stator iron core (17) is the three-phase pole teeth A1-A4, B1-B4 and C1 of the outer-rotor brushless motor corresponding to the magnetic ring or the magnetic tile of the three-phase outer-rotor brushless motor ⁇ C4;
  • the inner mechanism of the fifth stator iron core (17) is the two-phase pole teeth a1-a4 and b1-b4 of the inner rotor hybrid stepping motor corresponding to the inner rotor iron core of the two-phase hybrid stepping motor.
  • the inner rotor structure includes an inner rotor core of a three-phase hybrid stepping motor
  • the outer rotor structure includes a magnetic ring or a magnetic shoe of a three-phase outer rotor brushless motor and a three-phase outer rotor.
  • the outer mechanism of the fifth stator iron core (17) is the two-phase pole teeth A1-A4, B1-B4 and C1 of the outer-rotor brushless motor corresponding to the magnetic ring or the magnetic tile of the three-phase outer-rotor brushless motor ⁇ C4;
  • the inner mechanism of the fifth stator iron core (17) is the three-phase pole teeth a1-a4, b1-b4 and the inner rotor hybrid stepping motor corresponding to the inner rotor iron core of the three-phase hybrid stepping motor. c1 to c4.
  • the inner rotor structure and the outer rotor structure are independently formed into two motors, and one of the two motors is a hybrid stepping motor.
  • the present invention has the following advantages:
  • the inner and outer double rotor hybrid stepping motor is an extension of the radial dimension, and the axial dimension of the motor is shortened, which is suitable for applications where the axial dimension is limited and the axial multi-layer movement;
  • the performance is more excellent.
  • the inner and outer double-rotor motors one of which is a brushless motor, and the other is a hybrid stepping motor; the stepping motor has a fast response and a high speed of the brushless motor.
  • the dual-rotor motor of the present invention takes into account the stepping motor. and the advantages of brushless motors.
  • FIG. 1 is a schematic structural diagram of an existing inner rotor hybrid stepping motor
  • FIG. 2 is a schematic structural diagram of an existing outer rotor hybrid stepping motor
  • FIG. 3 is a schematic structural diagram of an existing inner rotor brushless motor
  • FIG. 4 is a schematic structural diagram of an existing outer rotor brushless motor
  • Embodiment 1 of the present invention is a schematic structural diagram of Embodiment 1 of the present invention.
  • Embodiment 2 of the present invention is a schematic structural diagram of Embodiment 2 of the present invention.
  • Embodiment 7 is a schematic structural diagram of Embodiment 3 of the present invention.
  • Embodiment 4 of the present invention is a schematic structural diagram of Embodiment 4 of the present invention.
  • Embodiment 5 of the present invention is a schematic structural diagram of Embodiment 5 of the present invention.
  • Embodiment 6 of the present invention is a schematic structural diagram of Embodiment 6 of the present invention.
  • Embodiment 7 of the present invention is a schematic structural diagram of Embodiment 7 of the present invention.
  • Embodiment 8 is a schematic structural diagram of Embodiment 8 of the present invention.
  • 1 is the first stepping motor stator iron core
  • 2 is the first stepping motor rotor iron core
  • 3 is the second stepping motor rotor iron core
  • 4 is the first magnetic steel
  • 5 is the second stepping motor stator iron Core
  • 6 is the third stepping motor rotor core
  • 7 is the fourth stepping motor rotor core
  • 8 is the second magnetic steel
  • 9 is the third brushless inner rotor motor stator core
  • 10 is the brushless inner rotor motor rotor magnetic ring or magnetic shoe
  • 11 is the fifth brushless inner rotor motor rotor core
  • 12 is the brushless inner rotor motor shaft
  • 13 is the rotor yoke of the brushless outer rotor motor
  • 14 is the rotor magnetic ring or magnetic tile of the brushless outer rotor motor
  • 15 is the stator iron core of the fourth brushless outer rotor motor
  • 16 is the outer rotor core of the two-phase hybrid stepping motor
  • 17 and 22 are the fifth stator core
  • 18 is the inner rotor magnetic ring or magnetic tile of the two-phase brushless motor
  • 19 is the inner rotor of the two-phase brushless motor.
  • Rotor iron core 20 is the rotor yoke of the two-phase outer rotor brushless motor
  • 21 is the magnetic ring or magnetic tile of the two-phase outer rotor brushless motor
  • 23 is the inner rotor iron core of the two-phase hybrid stepping motor.
  • a dual-rotor motor includes fifth stator cores 17 and 22 common to the inner and outer rotor motors, an inner rotor structure and an outer rotor structure.
  • the inner rotor structure and the outer rotor mechanism operate independently.
  • the inner side of the fifth stator cores 17 and 22 is provided with an inner mechanism corresponding to the inner rotor structure, and the outer side of the fifth stator core 17 and 22 is provided with an outer mechanism corresponding to the outer rotor structure.
  • the motor of this embodiment is that the outer rotor is a two-phase hybrid stepping motor, and the inner rotor is a two-phase brushless motor;
  • the inner rotor structure includes the inner rotor magnetic ring or magnetic tile 18 of the two-phase brushless motor and the inner rotor iron core 19 of the two-phase brushless motor, and the outer rotor structure is the outer rotor of the two-phase hybrid stepping motor.
  • the outer mechanism of the fifth stator iron core 17 is the two-phase pole teeth A1-A4 and B1-B4 of the outer rotor hybrid stepping motor corresponding to the outer rotor iron core 16 of the two-phase hybrid stepping motor;
  • the inner mechanism of the fifth stator core 17 is the two-phase pole teeth a1-a4 and b1-b4 of the inner rotor brushless motor corresponding to the inner rotor magnetic ring or the magnetic shoe 18 of the two-phase brushless motor.
  • the motor of this embodiment is that the outer rotor is a two-phase brushless motor, and the inner rotor is a two-phase hybrid stepping motor;
  • the inner rotor structure includes the inner rotor core 23 of the two-phase hybrid stepping motor, and the outer rotor structure includes the magnetic ring or the magnetic shoe 21 of the two-phase outer rotor brushless motor and the two-phase outer rotor brushless motor.
  • the outer mechanism of the fifth stator core 17 is the two-phase pole teeth A1-A4 and B1-B4 of the outer-rotor brushless motor corresponding to the magnetic ring or the magnetic tile 21 of the two-phase outer-rotor brushless motor;
  • the inner mechanism of the fifth stator iron core 17 is the two-phase pole teeth a1-a4 and b1-b4 of the inner rotor hybrid stepping motor corresponding to the inner rotor iron core 23 of the two-phase hybrid stepping motor.
  • the motor of this embodiment is that the outer rotor is a two-phase hybrid stepping motor, and the inner rotor is a three-phase brushless motor;
  • the inner rotor structure includes the inner rotor magnetic ring or magnetic tile of the three-phase brushless motor and the inner rotor iron core of the three-phase brushless motor, and the outer rotor structure is the outer rotor iron of the two-phase hybrid stepping motor. core;
  • the outer mechanism of the fifth stator iron core 17 is the two-phase pole teeth A1-A4 and B1-B4 of the outer rotor hybrid stepping motor corresponding to the outer rotor iron core of the two-phase hybrid stepping motor;
  • the inner mechanism of the fifth stator core 17 is the three-phase pole teeth a1-a4, b1-b4 and c1-c4 of the inner-rotor brushless motor corresponding to the inner-rotor magnetic ring or the magnetic tile of the three-phase brushless motor .
  • the motor of this embodiment is that the outer rotor is a three-phase hybrid stepping motor, and the inner rotor is a two-phase brushless motor;
  • the inner rotor structure includes the inner rotor magnetic ring or magnetic tile of the two-phase brushless motor and the inner rotor iron core of the two-phase brushless motor, and the outer rotor structure is the outer rotor iron of the three-phase hybrid stepping motor. core;
  • the outer mechanism of the fifth stator iron core 17 is the three-phase pole teeth A1-A4, B1-B4 and C1- of the outer rotor hybrid stepping motor corresponding to the outer rotor iron core of the three-phase hybrid stepping motor. C4;
  • the inner mechanism of the fifth stator iron core 17 is the two-phase pole teeth a1-a4 and b1-b4 of the inner rotor brushless motor corresponding to the inner rotor magnetic ring or the magnetic shoe of the two-phase brushless motor.
  • the motor of this embodiment is that the outer rotor is a three-phase hybrid stepping motor, and the inner rotor is a three-phase brushless motor;
  • the inner rotor structure includes the inner rotor magnetic ring or the magnetic tile of the three-phase brushless motor and the inner rotor iron core of the three-phase brushless motor, and the outer rotor structure is the outer rotor iron of the three-phase hybrid stepping motor. core;
  • the outer mechanism of the fifth stator iron core 17 is the three-phase pole teeth A1-A4, B1-B4 and C1- of the outer rotor hybrid stepping motor corresponding to the outer rotor iron core of the three-phase hybrid stepping motor. C4;
  • the inner mechanism of the fifth stator core 17 is the three-phase pole teeth a1-a4, b1-b4 and c1-c4 of the inner-rotor brushless motor corresponding to the inner-rotor magnetic ring or the magnetic tile of the three-phase brushless motor .
  • the motor of this embodiment is that the outer rotor is a two-phase brushless motor, and the inner rotor is a three-phase hybrid stepping motor;
  • the inner rotor structure includes the inner rotor iron core of the three-phase hybrid stepping motor, and the outer rotor structure includes the magnetic ring or the magnetic shoe of the two-phase outer rotor brushless motor and the rotor of the two-phase outer rotor brushless motor. yoke;
  • the outer mechanism of the fifth stator core 17 is the two-phase pole teeth A1-A4 and B1-B4 of the outer-rotor brushless motor corresponding to the magnetic ring or the magnetic tile of the two-phase outer-rotor brushless motor;
  • the inner mechanism of the fifth stator iron core 17 is the three-phase pole teeth a1-a4, b1-b4 and c1- of the inner rotor hybrid stepping motor corresponding to the inner rotor iron core of the three-phase hybrid stepping motor. c4.
  • the motor of this embodiment is that the outer rotor is a three-phase brushless motor, and the inner rotor is a two-phase hybrid stepping motor;
  • the inner rotor structure includes the inner rotor iron core of the two-phase hybrid stepping motor, and the outer rotor structure includes the magnetic ring or the magnetic shoe of the three-phase outer rotor brushless motor and the rotor of the three-phase outer rotor brushless motor. yoke;
  • the outer mechanism of the fifth stator core 17 is the three-phase pole teeth A1-A4, B1-B4 and C1-C4 of the outer-rotor brushless motor corresponding to the magnetic ring or the magnetic tile of the three-phase outer-rotor brushless motor.
  • the inner mechanism of the fifth stator iron core 17 is the two-phase pole teeth a1-a4 and b1-b4 of the inner rotor hybrid stepping motor corresponding to the inner rotor iron core of the two-phase hybrid stepping motor.
  • the motor of this embodiment is that the outer rotor is a three-phase brushless motor, and the inner rotor is a three-phase hybrid stepping motor; wherein the inner rotor structure includes the inner rotor of the three-phase hybrid stepping motor an iron core, the outer rotor structure includes a magnetic ring or a magnetic shoe of a three-phase outer rotor brushless motor and a rotor yoke of the three-phase outer rotor brushless motor;
  • the outer mechanism of the fifth stator core 17 is the two-phase pole teeth A1-A4, B1-B4 and C1-C4 of the outer-rotor brushless motor corresponding to the magnetic ring or the magnetic tile of the three-phase outer-rotor brushless motor.
  • the inner mechanism of the fifth stator core 17 is the three-phase pole teeth a1-a4, b1-b4 and c1 of the inner rotor hybrid stepping motor corresponding to the inner rotor core of the three-phase hybrid stepping motor ⁇ c4.
  • the present invention is divided into an inner rotor and an outer rotor on the basis of the structure of the existing inner and outer rotor hybrid stepping motor and the brushless motor, and the inner rotor and the outer rotor operate independently.
  • the middle is the common stator core, the inner side of the stator core is the slot and pole teeth of the inner rotor motor, and the outer side of the stator core is the slot and pole teeth of the outer rotor motor.
  • the inner and outer rotors are independent into two motors. Among the inner rotor and outer rotor motors, one of them must be a hybrid stepping motor.

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Abstract

一种双转子电机，包括内外转子电机公用的第五定子铁芯(17、22)、内转子结构和外转子结构，内转子结构和外转子结构独立运行，第五定子铁芯(17、22)内侧设有与内转子结构对应的内侧机构，第五定子铁芯(17、22)外侧设有与外转子结构对应的外侧机构。与现有技术相比，本发明具有实现成本低、适用范围广、性能更为卓越等优点。

Description

一种双转子电机 技术领域
本发明涉及一种电机，尤其是涉及一种双转子电机。
背景技术
如图1所示，现有的内转子混合式步进电机结构，包括第一内转子步进电机定子铁芯1、定子铁芯槽内的第一定子绕组(未画出)、轴向错开一定角度叠压的第一内转子步进电机转子铁芯2和第二内转子步进电机转子铁芯3、以及内转子步进电机转子铁芯中间的第一磁钢4(虚线圆环部分)；如图2所示，现有的外转子混合式步进电机结构，包括第二外转子步进电机定子铁芯5、定子铁芯槽内的第二定子绕组(未画出)、轴向错开一定角度叠压的第三步进电机转子铁芯6和第四步进电机转子铁芯7、以及转子铁芯中间的第二磁钢8(虚线圆环部分)。
如图3所示，现有内转子无刷电机的结构，包括第三无刷内转子电机定子铁芯9、定子铁芯槽内的第三定子绕组(未画出)、无刷内转子电机转子磁环或磁瓦10、第五无刷内转子电机转子铁芯11、无刷内转子电机转轴12；如图4所示，现有外转子无刷电机的结构，包括无刷外转子电机转子轭铁13、无刷外转子电机转子磁环或磁瓦14、第四无刷外转子电机定子铁芯15、定子铁芯槽内的第四定子绕组(未画出)。
但是上述内转子或者外转子电机适用范围较窄，特别是轴向多层运动的应用场合，无法适用，因此如何将内转子和外转子进行结合，从而来减小电机的轴向尺寸，使其适用于轴向多层运动的应用场合，成为需要解决的技术问题。
同时步进电机响应快，无刷电机速度高，因此如何来兼顾步进电机和无刷电机的优点，也成为需要解决的技术问题。
发明内容
本发明的目的就是为了克服上述现有技术存在的缺陷而提供一种实现成本低、适用范围广、性能更为卓越的双转子电机。
本发明的目的可以通过以下技术方案来实现：
根据本发明的一个方面，提供了一种双转子电机，包括内外转子电机公用的第五 定子铁芯(17、22)、内转子结构和外转子结构，所述的内转子结构和外转子机构独立运行，所述的第五定子铁芯(17、22)内侧设有与内转子结构对应的内侧机构，所述的第五定子铁芯(17、22)外侧设有与外转子结构对应的外侧机构。
作为优选的技术方案，所述的内转子结构包括两相无刷电机的内转子磁环或磁瓦(18)和两相无刷电机的内转子铁芯(19)，所述的外转子结构为两相混合式步进电机的外转子铁芯(16)；
所述的第五定子铁芯(17)的外侧机构为与两相混合式步进电机的外转子铁芯(16)对应的外转子混合式步进电机的两相极齿A1～A4和B1～B4；
所述的第五定子铁芯(17)的内侧机构为与两相无刷电机的内转子磁环或磁瓦(18)对应的内转子无刷电机的两相极齿a1～a4和b1～b4。
作为优选的技术方案，所述的内转子结构包括两相混合式步进电机的内转子铁芯(23)，所述的外转子结构包括两相外转子无刷电机的磁环或磁瓦(21)和两相外转子无刷电机的转子轭铁(20)；
所述的第五定子铁芯(17)的外侧机构为与两相外转子无刷电机的磁环或磁瓦(21)对应的外转子无刷电机的两相极齿A1～A4和B1～B4；
所述的第五定子铁芯(17)的内侧机构为与两相混合式步进电机的内转子铁芯(23)对应的内转子混合式步进电机的两相极齿a1～a4和b1～b4。
作为优选的技术方案，所述的内转子结构包括三相无刷电机的内转子磁环或磁瓦和三相无刷电机的内转子铁芯，所述的外转子结构为两相混合式步进电机的外转子铁芯；
所述的第五定子铁芯(17)的外侧机构为与两相混合式步进电机的外转子铁芯对应的外转子混合式步进电机的两相极齿A1～A4和B1～B4；
所述的第五定子铁芯(17)的内侧机构为与三相无刷电机的内转子磁环或磁瓦对应的内转子无刷电机的三相极齿a1～a4、b1～b4和c1～c4。
作为优选的技术方案，所述的内转子结构包括两相无刷电机的内转子磁环或磁瓦和两相无刷电机的内转子铁芯，所述的外转子结构为三相混合式步进电机的外转子铁芯；
所述的第五定子铁芯(17)的外侧机构为与三相混合式步进电机的外转子铁芯对应的外转子混合式步进电机的三相极齿A1～A4、B1～B4和C1～C4；
所述的第五定子铁芯(17)的内侧机构为与两相无刷电机的内转子磁环或磁瓦对应的内转子无刷电机的两相极齿a1～a4和b1～b4。
作为优选的技术方案，所述的内转子结构包括三相无刷电机的内转子磁环或磁瓦和三相无刷电机的内转子铁芯，所述的外转子结构为三相混合式步进电机的外转子铁芯；
所述的第五定子铁芯(17)的外侧机构为与三相混合式步进电机的外转子铁芯对应的外转子混合式步进电机的三相极齿A1～A4、B1～B4和C1～C4；
所述的第五定子铁芯(17)的内侧机构为与三相无刷电机的内转子磁环或磁瓦对应的内转子无刷电机的三相极齿a1～a4、b1～b4和c1～c4。
作为优选的技术方案，所述的内转子结构包括三相混合式步进电机的内转子铁芯，所述的外转子结构包括两相外转子无刷电机的磁环或磁瓦和两相外转子无刷电机的转子轭铁；
所述的第五定子铁芯(17)的外侧机构为与两相外转子无刷电机的磁环或磁瓦对应的外转子无刷电机的两相极齿A1～A4和B1～B4；
所述的第五定子铁芯(17)的内侧机构为与三相混合式步进电机的内转子铁芯对应的内转子混合式步进电机的三相极齿a1～a4、b1～b4和c1～c4。
作为优选的技术方案，所述的内转子结构包括两相混合式步进电机的内转子铁芯，所述的外转子结构包括三相外转子无刷电机的磁环或磁瓦和三相外转子无刷电机的转子轭铁；
所述的第五定子铁芯(17)的外侧机构为与三相外转子无刷电机的磁环或磁瓦对应的外转子无刷电机的三相极齿A1～A4、B1～B4和C1～C4；
所述的第五定子铁芯(17)的内侧机构为与两相混合式步进电机的内转子铁芯对应的内转子混合式步进电机的两相极齿a1～a4和b1～b4。
作为优选的技术方案，所述的内转子结构包括三相混合式步进电机的内转子铁芯，所述的外转子结构包括三相外转子无刷电机的磁环或磁瓦和三相外转子无刷电机的转子轭铁；
所述的第五定子铁芯(17)的外侧机构为与三相外转子无刷电机的磁环或磁瓦对应的外转子无刷电机的两相极齿A1～A4、B1～B4和C1～C4；
所述的第五定子铁芯(17)的内侧机构为与三相混合式步进电机的内转子铁芯对 应的内转子混合式步进电机的三相极齿a1～a4、b1～b4和c1～c4。
作为优选的技术方案，所述的内转子结构和外转子结构分别独立成两个电机，两个电机中其中一个为混合式步进电机。
与现有技术相比，本发明具有以下优点：
1)实现成本低，内外双转子混合式步进电机公用一个定子铁芯，相比于现有电机，大大节省了电机的制造成本；
2)适用范围广，内外双转子混合式步进电机是在径向尺寸上的延伸，电机的轴向尺寸变短，适合于轴向尺寸受限，轴向多层运动的应用场合；
3)性能更为卓越，内外双转子电机，其中一个是无刷电机，一个是混合式步进电机；其中步进电机响应快，无刷电机速度高，本发明双转子电机兼顾了步进电机和无刷电机的优点。
附图说明
图1为现有内转子混合式步进电机结构示意图；
图2为现有外转子混合式步进电机结构示意图；
图3为现有内转子无刷电机的结构示意图；
图4为现有外转子无刷电机的结构示意图；
图5为本发明实施例1的结构示意图；
图6为本发明实施例2的结构示意图；
图7为本发明实施例3的结构示意图；
图8为本发明实施例4的结构示意图；
图9为本发明实施例5的结构示意图；
图10为本发明实施例6的结构示意图；
图11为本发明实施例7的结构示意图；
图12为本发明实施例8的结构示意图；
其中1为第一步进电机定子铁芯、2为第一步进电机转子铁芯、3为第二步进电机转子铁芯、4为第一磁钢、5为第二步进电机定子铁芯、6为第三步进电机转子铁芯、7为第四步进电机转子铁芯、8为第二磁钢
9为第三无刷内转子电机定子铁芯、10为无刷内转子电机转子磁环或磁瓦、11 为第五无刷内转子电机转子铁芯、12为无刷内转子电机转轴、13为无刷外转子电机转子轭铁、14为无刷外转子电机转子磁环或磁瓦、15为第四无刷外转子电机定子铁芯；
16为两相混合式步进电机的外转子铁芯，17、22为第五定子铁芯，18为两相无刷电机的内转子磁环或磁瓦，19为两相无刷电机的内转子铁芯，20为两相外转子无刷电机的转子轭铁，21为两相外转子无刷电机的磁环或磁瓦，23为两相混合式步进电机的内转子铁芯。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明的一部分实施例，而不是全部实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例，都应属于本发明保护的范围。
实施例1
如图5所示，一种双转子电机，包括内外转子电机公用的第五定子铁芯17、22、内转子结构和外转子结构，所述的内转子结构和外转子机构独立运行，所述的第五定子铁芯17、22内侧设有与内转子结构对应的内侧机构，所述的第五定子铁芯17、22外侧设有与外转子结构对应的外侧机构。
该实施例的电机是外转子为两相混合式步进电机，内转子为两相无刷电机；
所述的内转子结构包括两相无刷电机的内转子磁环或磁瓦18和两相无刷电机的内转子铁芯19，所述的外转子结构为两相混合式步进电机的外转子铁芯16；
所述的第五定子铁芯17的外侧机构为与两相混合式步进电机的外转子铁芯16对应的外转子混合式步进电机的两相极齿A1～A4和B1～B4；
所述的第五定子铁芯17的内侧机构为与两相无刷电机的内转子磁环或磁瓦18对应的内转子无刷电机的两相极齿a1～a4和b1～b4。
实施例2
如图6所示，该实施例的电机是外转子为两相无刷电机，内转子为两相混合式步进电机；
所述的内转子结构包括两相混合式步进电机的内转子铁芯23，所述的外转子结 构包括两相外转子无刷电机的磁环或磁瓦21和两相外转子无刷电机的转子轭铁20；
所述的第五定子铁芯17的外侧机构为与两相外转子无刷电机的磁环或磁瓦21对应的外转子无刷电机的两相极齿A1～A4和B1～B4；
所述的第五定子铁芯17的内侧机构为与两相混合式步进电机的内转子铁芯23对应的内转子混合式步进电机的两相极齿a1～a4和b1～b4。
实施例3
如图7所示，该实施例的电机是外转子为两相混合式步进电机，内转子为三相无刷电机；
所述的内转子结构包括三相无刷电机的内转子磁环或磁瓦和三相无刷电机的内转子铁芯，所述的外转子结构为两相混合式步进电机的外转子铁芯；
所述的第五定子铁芯17的外侧机构为与两相混合式步进电机的外转子铁芯对应的外转子混合式步进电机的两相极齿A1～A4和B1～B4；
所述的第五定子铁芯17的内侧机构为与三相无刷电机的内转子磁环或磁瓦对应的内转子无刷电机的三相极齿a1～a4、b1～b4和c1～c4。
实施例4
如图8所示，该实施例的电机是外转子为三相混合式步进电机，内转子为两相无刷电机；
所述的内转子结构包括两相无刷电机的内转子磁环或磁瓦和两相无刷电机的内转子铁芯，所述的外转子结构为三相混合式步进电机的外转子铁芯；
所述的第五定子铁芯17的外侧机构为与三相混合式步进电机的外转子铁芯对应的外转子混合式步进电机的三相极齿A1～A4、B1～B4和C1～C4；
所述的第五定子铁芯17的内侧机构为与两相无刷电机的内转子磁环或磁瓦对应的内转子无刷电机的两相极齿a1～a4和b1～b4。
实施例5
如图9所示，该实施例的电机是外转子为三相混合式步进电机，内转子为三相无刷电机；
所述的内转子结构包括三相无刷电机的内转子磁环或磁瓦和三相无刷电机的内转子铁芯，所述的外转子结构为三相混合式步进电机的外转子铁芯；
所述的第五定子铁芯17的外侧机构为与三相混合式步进电机的外转子铁芯对应 的外转子混合式步进电机的三相极齿A1～A4、B1～B4和C1～C4；
所述的第五定子铁芯17的内侧机构为与三相无刷电机的内转子磁环或磁瓦对应的内转子无刷电机的三相极齿a1～a4、b1～b4和c1～c4。
实施例6
如图10所示，该实施例的电机是外转子为两相无刷电机，内转子为三相混合式步进电机；
所述的内转子结构包括三相混合式步进电机的内转子铁芯，所述的外转子结构包括两相外转子无刷电机的磁环或磁瓦和两相外转子无刷电机的转子轭铁；
所述的第五定子铁芯17的外侧机构为与两相外转子无刷电机的磁环或磁瓦对应的外转子无刷电机的两相极齿A1～A4和B1～B4；
所述的第五定子铁芯17的内侧机构为与三相混合式步进电机的内转子铁芯对应的内转子混合式步进电机的三相极齿a1～a4、b1～b4和c1～c4。
实施例7
如图11所示，该实施例的电机是外转子为三相无刷电机，内转子为两相混合式步进电机；
所述的内转子结构包括两相混合式步进电机的内转子铁芯，所述的外转子结构包括三相外转子无刷电机的磁环或磁瓦和三相外转子无刷电机的转子轭铁；
所述的第五定子铁芯17的外侧机构为与三相外转子无刷电机的磁环或磁瓦对应的外转子无刷电机的三相极齿A1～A4、B1～B4和C1～C4；所述的第五定子铁芯17的内侧机构为与两相混合式步进电机的内转子铁芯对应的内转子混合式步进电机的两相极齿a1～a4和b1～b4。
实施例8
如图12所示，该实施例的电机是外转子为三相无刷电机，内转子为三相混合式步进电机；其中所述的内转子结构包括三相混合式步进电机的内转子铁芯，所述的外转子结构包括三相外转子无刷电机的磁环或磁瓦和三相外转子无刷电机的转子轭铁；
所述的第五定子铁芯17的外侧机构为与三相外转子无刷电机的磁环或磁瓦对应的外转子无刷电机的两相极齿A1～A4、B1～B4和C1～C4；所述的第五定子铁芯17的内侧机构为与三相混合式步进电机的内转子铁芯对应的内转子混合式步进电机的三相极齿a1～a4、b1～b4和c1～c4。
本发明的原理如下：
本发明在现有内外转子混合式步进电机和无刷电机结构的基础上，分为内转子和外转子，内转子和外转子独立运行。中间是公用的定子铁芯，定子铁芯内侧是内转子电机的槽和极齿，定子铁芯外侧是外转子电机的槽和极齿。
内外转子分别独立成两个电机。内转子和外转子电机中，其中必须要有一个电机为混合式步进电机。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到各种等效的修改或替换，这些修改或替换都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以权利要求的保护范围为准。

Claims (10)

  1. 一种双转子电机，其特征在于，包括内外转子电机公用的第五定子铁芯(17、22)、内转子结构和外转子结构，所述的内转子结构和外转子机构独立运行，所述的第五定子铁芯(17、22)内侧设有与内转子结构对应的内侧机构，所述的第五定子铁芯(17、22)外侧设有与外转子结构对应的外侧机构。
  2. 根据权利要求1所述的一种双转子电机，其特征在于，所述的内转子结构包括两相无刷电机的内转子磁环或磁瓦(18)和两相无刷电机的内转子铁芯(19)，所述的外转子结构为两相混合式步进电机的外转子铁芯(16)；
    所述的第五定子铁芯(17)的外侧机构为与两相混合式步进电机的外转子铁芯(16)对应的外转子混合式步进电机的两相极齿A1～A4和B1～B4；
    所述的第五定子铁芯(17)的内侧机构为与两相无刷电机的内转子磁环或磁瓦(18)对应的内转子无刷电机的两相极齿a1～a4和b1～b4。
  3. 根据权利要求1所述的一种双转子电机，其特征在于，所述的内转子结构包括两相混合式步进电机的内转子铁芯(23)，所述的外转子结构包括两相外转子无刷电机的磁环或磁瓦(21)和两相外转子无刷电机的转子轭铁(20)；
    所述的第五定子铁芯(17)的外侧机构为与两相外转子无刷电机的磁环或磁瓦(21)对应的外转子无刷电机的两相极齿A1～A4和B1～B4；
    所述的第五定子铁芯(17)的内侧机构为与两相混合式步进电机的内转子铁芯(23)对应的内转子混合式步进电机的两相极齿a1～a4和b1～b4。
  4. 根据权利要求1所述的一种双转子电机，其特征在于，所述的内转子结构包括三相无刷电机的内转子磁环或磁瓦和三相无刷电机的内转子铁芯，所述的外转子结构为两相混合式步进电机的外转子铁芯；
    所述的第五定子铁芯(17)的外侧机构为与两相混合式步进电机的外转子铁芯对应的外转子混合式步进电机的两相极齿A1～A4和B1～B4；
    所述的第五定子铁芯(17)的内侧机构为与三相无刷电机的内转子磁环或磁瓦对应的内转子无刷电机的三相极齿a1～a4、b1～b4和c1～c4。
  5. 根据权利要求1所述的一种双转子电机，其特征在于，所述的内转子结构包括两相无刷电机的内转子磁环或磁瓦和两相无刷电机的内转子铁芯，所述的外转子结 构为三相混合式步进电机的外转子铁芯；
    所述的第五定子铁芯(17)的外侧机构为与三相混合式步进电机的外转子铁芯对应的外转子混合式步进电机的三相极齿A1～A4、B1～B4和C1～C4；
    所述的第五定子铁芯(17)的内侧机构为与两相无刷电机的内转子磁环或磁瓦对应的内转子无刷电机的两相极齿a1～a4和b1～b4。
  6. 根据权利要求1所述的一种双转子电机，其特征在于，所述的内转子结构包括三相无刷电机的内转子磁环或磁瓦和三相无刷电机的内转子铁芯，所述的外转子结构为三相混合式步进电机的外转子铁芯；
    所述的第五定子铁芯(17)的外侧机构为与三相混合式步进电机的外转子铁芯对应的外转子混合式步进电机的三相极齿A1～A4、B1～B4和C1～C4；
    所述的第五定子铁芯(17)的内侧机构为与三相无刷电机的内转子磁环或磁瓦对应的内转子无刷电机的三相极齿a1～a4、b1～b4和c1～c4。
  7. 根据权利要求1所述的一种双转子电机，其特征在于，所述的内转子结构包括三相混合式步进电机的内转子铁芯，所述的外转子结构包括两相外转子无刷电机的磁环或磁瓦和两相外转子无刷电机的转子轭铁；
    所述的第五定子铁芯(17)的外侧机构为与两相外转子无刷电机的磁环或磁瓦对应的外转子无刷电机的两相极齿A1～A4和B1～B4；
    所述的第五定子铁芯(17)的内侧机构为与三相混合式步进电机的内转子铁芯对应的内转子混合式步进电机的三相极齿a1～a4、b1～b4和c1～c4。
  8. 根据权利要求1所述的一种双转子电机，其特征在于，所述的内转子结构包括两相混合式步进电机的内转子铁芯，所述的外转子结构包括三相外转子无刷电机的磁环或磁瓦和三相外转子无刷电机的转子轭铁；
    所述的第五定子铁芯(17)的外侧机构为与三相外转子无刷电机的磁环或磁瓦对应的外转子无刷电机的三相极齿A1～A4、B1～B4和C1～C4；
    所述的第五定子铁芯(17)的内侧机构为与两相混合式步进电机的内转子铁芯对应的内转子混合式步进电机的两相极齿a1～a4和b1～b4。
  9. 根据权利要求1所述的一种双转子电机，其特征在于，所述的内转子结构包括三相混合式步进电机的内转子铁芯，所述的外转子结构包括三相外转子无刷电机的磁环或磁瓦和三相外转子无刷电机的转子轭铁；
    所述的第五定子铁芯(17)的外侧机构为与三相外转子无刷电机的磁环或磁瓦对应的外转子无刷电机的两相极齿A1～A4、B1～B4和C1～C4；
    所述的第五定子铁芯(17)的内侧机构为与三相混合式步进电机的内转子铁芯对应的内转子混合式步进电机的三相极齿a1～a4、b1～b4和c1～c4。
  10. 根据权利要求1所述的一种双转子电机，其特征在于，所述的内转子结构和外转子结构分别独立成两个电机，两个电机中其中一个为混合式步进电机。
PCT/CN2022/070097 2021-01-08 2022-01-04 一种双转子电机 WO2022148341A1 (zh)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1261474A (zh) * 1997-05-06 2000-07-26 诺特特里有限公司 电动机
CN104115374A (zh) * 2012-02-08 2014-10-22 日本精工株式会社 驱动器、定子、马达、旋转直线运动转换机构以及线性运动驱动器
CN108242861A (zh) * 2016-12-23 2018-07-03 上海鸣志电器股份有限公司 一种两相混合式步进电机
CN111628621A (zh) * 2020-04-30 2020-09-04 陕西榆林能源集团横山煤电有限公司 无刷盘式双转子电机

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1261474A (zh) * 1997-05-06 2000-07-26 诺特特里有限公司 电动机
CN104115374A (zh) * 2012-02-08 2014-10-22 日本精工株式会社 驱动器、定子、马达、旋转直线运动转换机构以及线性运动驱动器
CN108242861A (zh) * 2016-12-23 2018-07-03 上海鸣志电器股份有限公司 一种两相混合式步进电机
CN111628621A (zh) * 2020-04-30 2020-09-04 陕西榆林能源集团横山煤电有限公司 无刷盘式双转子电机

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