WO2023108893A1 - 定子组件、电机和电器设备 - Google Patents

定子组件、电机和电器设备 Download PDF

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Publication number
WO2023108893A1
WO2023108893A1 PCT/CN2022/077748 CN2022077748W WO2023108893A1 WO 2023108893 A1 WO2023108893 A1 WO 2023108893A1 CN 2022077748 W CN2022077748 W CN 2022077748W WO 2023108893 A1 WO2023108893 A1 WO 2023108893A1
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WO
WIPO (PCT)
Prior art keywords
stator
teeth
tooth
motor
yoke
Prior art date
Application number
PCT/CN2022/077748
Other languages
English (en)
French (fr)
Inventor
屈欢
李文瑞
诸自强
甘磊
吴越虹
李俊龙
周一恒
Original Assignee
淮安威灵电机制造有限公司
美的威灵电机技术（上海）有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN202111554061.9A external-priority patent/CN114256996A/zh
Priority claimed from CN202123184859.7U external-priority patent/CN216356126U/zh
Application filed by 淮安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 淮安威灵电机制造有限公司
Publication of WO2023108893A1 publication Critical patent/WO2023108893A1/zh

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/14—Stator cores with salient poles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/16—Stator cores with slots for windings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2786—Outer rotors
    • H02K1/2787—Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/2789—Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2791—Surface mounted magnets; Inset magnets
    • H02K1/27915—Magnets shaped to vary the mechanical air gap between the magnets and the stator
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K16/00—Machines with more than one rotor or stator
    • H02K16/04—Machines with one rotor and two stators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/12—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/28—Layout of windings or of connections between windings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H02K3/52—Fastening salient pole windings or connections thereto

Definitions

  • the present application relates to the technical field of motors, in particular, to a stator assembly, a motor and electrical equipment.
  • motors including double stators in the stator assembly are used more and more, and how to reduce the loss of the motor and improve the operating efficiency of the motor during the operation of the motor has become an urgent problem to be solved.
  • This application aims to solve at least one of the technical problems existing in the prior art.
  • the first aspect of the present application provides a stator assembly.
  • a second aspect of the present application provides an electric motor.
  • the third aspect of the present application provides an electrical device.
  • the first aspect of the present application provides a stator assembly, including: a first stator, the first stator includes a first yoke and at least two first teeth, the at least two first teeth are provided on the outer wall of the first yoke , a first stator slot is formed between two adjacent first teeth, the outer wall of the first stator includes a plurality of first grooves, and the plurality of first grooves at least include the first stator slot; the second stator, the first stator slot
  • the two stators include a second yoke and at least two second teeth, the second yoke is arranged coaxially with the first yoke and sleeved outside the first yoke, and the at least two second teeth are arranged on the second yoke
  • the inner wall, between the first stator and the second stator is used to place the rotor assembly; the first stator slot has a slot center line in the radial direction of the first stator, and the second tooth has a slot centerline in the
  • the stator assembly proposed in this application includes a first stator and a second stator, the first stator and the second stator are arranged coaxially, and the first stator is located inside the second stator, further, the first stator and the second stator The rotor is placed between the second stators, and the rotor is arranged coaxially with the first stator and the second stator.
  • the first stator may include a first yoke and at least two first teeth, the first yoke is an annular structure, and the at least two first teeth may be distributed along the circumferential direction of the annular first yoke with the first yoke on the outer wall of the department.
  • the second stator may include a second yoke and at least two second teeth, the second yoke is also an annular structure, and the diameter of the second yoke is larger than the diameter of the first yoke, and the second yoke is sleeved on the outside of the first yoke to form an inner and outer stator structure.
  • At least two second teeth are distributed on the inner wall of the second yoke along the circumferential direction of the ring-shaped second yoke, that is, the first teeth and the second teeth are both positioned between the first stator and the second stator. space extension. Further, the rotor assembly is placed between the first tooth and the plurality of second teeth, so as to realize the cooperation between the rotor assembly and the first stator and the second stator, and then realize the rotation of the motor rotor assembly.
  • a first stator slot is formed between two adjacent first teeth, and in the radial direction of the first stator, the first stator slot has a slot centerline, and in the radial direction of the second stator,
  • the second tooth has a tooth body centerline, and, along the rotation direction of the rotor assembly, the included angle between the slot centerline of the first stator slot and the tooth body centerline of the second tooth is greater than or equal to 0 degrees and less than Or equal to 72/Ns degrees, that is, rotate the slot centerline of the first tooth along the rotation direction of the rotor assembly, and when the slot centerline reaches the tooth body centerline of the second tooth, the angle of rotation is greater than or equal to 0 degrees and less than or equal to 72/Ns degrees, where Ns is the total number of first grooves included on the outer wall of the first stator.
  • the power density during the operation of the motor can be effectively improved, the power distribution performance of the motor can be enhanced, and it can also be significantly improved.
  • the torque density during the operation of the motor can significantly increase the torque of the motor, ensuring the high speed and high torque operation requirements of the motor. It can also effectively improve the flux density in the first stator, the second stator and the rotor assembly during the running of the motor, thereby effectively reducing the loss of the motor and improving the running efficiency of the motor.
  • the stator assembly forms the radial double stator structure of the motor by radially arranging the first stator and the second stator, so that the rotor of the motor can be arranged between the first stator and the second stator, thereby effectively It can greatly improve the power density during the operation of the motor, enhance the power distribution performance of the motor, and can effectively reduce the radial volume of the motor, which is conducive to the miniaturization design of the motor. Further, through the definition of the angle between the first stator and the second stator, the flux density in the first stator, the second stator and the rotor can be effectively improved during the operation of the motor, thereby effectively reducing the loss of the motor , improve the efficiency of motor operation.
  • stator assembly According to the stator assembly provided by this application, it may also have the following additional technical features:
  • the first tooth includes: a first tooth body, one end of the first tooth body is connected to the first yoke; a first tooth shoe, the first tooth shoe is connected to the other end of the first tooth body connected, the end of the first tooth shoe away from the first tooth body is provided with at least two first auxiliary teeth, and a first auxiliary stator slot is included between two adjacent first auxiliary teeth, wherein the first groove also includes a second A pair of stator slots.
  • the first tooth specifically includes a first tooth body and a first tooth shoe, wherein one end of the first tooth body is connected to the first yoke, and the first tooth shoe is arranged at the other end of the first tooth body
  • at least two first auxiliary teeth are provided on the end of the first tooth shoe away from the first tooth body, and a first auxiliary stator slot is included between two adjacent first auxiliary teeth.
  • the at least two first auxiliary teeth can be used as magnetically conductive components for magnetic conduction; on the other hand, at least two first auxiliary teeth can also be used as modulation components to realize magnetic field modulation effect. More harmonic components are introduced into the air gap permeance, so that the performance of the motor is significantly improved.
  • the first groove on the outer wall of the first stator not only includes the first stator slot between the adjacent first teeth, but also Including the first auxiliary stator slots between adjacent first auxiliary teeth, that is, the number of first grooves on the outer wall of the first stator at this time is the number of first stator slots and the number of first auxiliary stator slots Sum.
  • the number of the second teeth is equal to the number of the first grooves.
  • the number of second teeth is equal to the number of first grooves on the outer wall of the first stator to ensure that the second stator
  • the number of second grooves on the inner wall of the first stator is equal to the number of first grooves on the outer wall of the first stator, so as to ensure the distribution of the magnetic field during the operation of the motor, thereby ensuring the stable operation of the motor.
  • the second tooth includes: a second tooth body, one end of the second tooth body is connected to the second stator yoke; a second tooth shoe, the second tooth shoe is connected to the second tooth body The other end of the second tooth shoe is connected to the other end of the second tooth body.
  • At least two second auxiliary teeth are provided at the end of the second tooth shoe, and there are second auxiliary stator slots between adjacent two second auxiliary teeth. The sum of the number and the number of the second secondary stator slots is equal to the number of the first grooves.
  • the sum of the number of second teeth and the number of second secondary stator slots is equal to the outer wall of the first stator
  • the number of first grooves on the upper surface is to ensure that the number of second grooves on the inner wall of the second stator is equal to the number of first grooves on the outer wall of the first stator, thereby ensuring the distribution of the magnetic field during the operation of the motor, and then Ensure the stable operation of the motor.
  • the second tooth specifically includes a second tooth body and a second tooth shoe, wherein one end of the second tooth body is connected to the second yoke, and the second tooth shoe is arranged at the other end of the second tooth body, further , the end of the second tooth shoe away from the second tooth body is provided with at least two second auxiliary teeth, and a second auxiliary stator slot is included between adjacent two second auxiliary teeth.
  • the at least two second auxiliary teeth can be used as magnetically conductive components for magnetic conduction, and on the other hand, the at least two second auxiliary teeth can also be used as modulation components to realize magnetic field modulation. effect. More harmonic components are introduced into the air gap permeance, so that the performance of the motor is significantly improved.
  • the stator assembly further includes a winding, and the winding is arranged on at least one of the first stator and the second stator.
  • the magnetic components on the stator assembly and the rotor assembly can cooperate to ensure stable output of torque and speed of the motor and ensure the operating efficiency of the motor.
  • the winding can be arranged on one of the first stator or the second stator, so as to realize the requirements of the motor for different magnetic field distributions, and further realize different torque outputs of the motor.
  • only one of the first stator and the second stator is provided with windings, on the basis of ensuring the operating efficiency of the motor, it can also save winding materials, effectively reduce the manufacturing cost of the motor, and also simplify the manufacturing structure.
  • the winding can also be arranged on the first stator and the second stator at the same time, so as to increase the flux density of the motor and further increase the torque output of the motor.
  • the winding is arranged on the first yoke and/or the second yoke.
  • the winding can be arranged on the first yoke of the first stator or on the second yoke of the second stator, thereby further improving the magnetic field waveform in the air gap between the stator assembly and the rotor assembly , so that the magnetic field formed by the permanent magnets of the rotor assembly in the air gap is closer to a sinusoidal shape, so as to further reduce the cogging torque and torque fluctuation of the motor, thereby improving the stability of the motor during operation.
  • the winding can be separately arranged on the first yoke of the first stator, or independently on the second yoke of the second stator, or can be arranged on the first yoke at the same time. On the yoke and the second yoke to ensure the running effect of the motor.
  • each first tooth is provided with a winding; and/or each second tooth is provided with a winding.
  • each winding when windings are arranged on the first stator, each winding can be arranged on a first tooth; correspondingly, when windings are arranged on the second stator, each winding can be arranged on a first tooth. On the second tooth. That is to say, the winding is set in the way of concentrated winding, so that during the operation of the motor, the winding process of the winding can be simplified on the basis of ensuring that the air-gap magnetic field has sufficient sine, thereby reducing the difficulty of manufacturing the motor and reducing the manufacturing cost.
  • one winding is arranged on every two adjacent first teeth; and/or one winding is arranged on every two adjacent second teeth.
  • each winding when windings are provided on the first stator, each winding can be wound on two first teeth at the same time; correspondingly, when windings are provided on the second stator, each winding can also be It is wound on two second teeth at the same time, that is to say, the winding is set in a distributed winding manner.
  • distributed winding the sinusoidality of the air gap magnetic field between the stator assembly and the rotor assembly can be effectively improved, thereby further reducing the cogging torque and torque fluctuation of the motor, thereby improving the stability of the motor during operation.
  • the winding can also be set as a concentric winding, specifically, the coil of the winding is set in a zigzag shape, that is, the coil is set as a multi-layer concentric coil, and each layer of coil is wound with a different number of stator teeth.
  • a winding is provided on every two adjacent first teeth or every adjacent two second teeth.
  • a motor including: a rotor assembly; and a stator assembly according to any one of the above technical solutions, at least a part of the stator assembly is located in the rotor assembly.
  • stator assembly is located in the rotor assembly, specifically, the stator assembly and the rotor assembly are arranged concentrically to ensure that the rotor assembly can rotate relative to the stator assembly to realize the power output of the motor.
  • a part of the stator assembly is located in the rotor assembly, and the stator assembly can also be integrally arranged in the rotor assembly in the axial direction, so as to realize different cooperation modes between the permanent magnets of the rotor assembly and the windings of the stator assembly.
  • the power density during the operation of the motor can be effectively improved, the power distribution performance of the motor can be enhanced, and the torque density during the operation of the motor can also be significantly improved , and then significantly increase the torque of the motor, ensuring the motor's operating requirements for high speed and high torque.
  • the double-stator motor can effectively reduce the radial volume of the motor while ensuring the performance of the motor, which is beneficial to the miniaturization design of the motor.
  • the rotor assembly includes a plurality of permanent magnets and a plurality of magnetic isolation parts, and the plurality of permanent magnets and the plurality of magnetic isolation parts are arranged alternately.
  • the rotor assembly may include permanent magnets and magnetic isolation parts, and the number of permanent magnets is the same as the number of magnetic isolation parts. Further, a plurality of permanent magnets and a plurality of magnetic isolation parts are arranged alternately and form a ring, so that the rotor assembly can be arranged concentrically with the first stator and the second stator, and further, the diameter of the rotor assembly can be set to be larger than that of the first stator. The diameter of the stator is not smaller than that of the second stator, thereby ensuring that the rotor assembly can be sleeved between the first stator and the second stator.
  • the magnetic field of the permanent magnets can effectively form a magnetic field loop between the stator and the rotor, thereby ensuring that the windings and the magnetic fields of the permanent magnets can be effectively coordinated. Guarantee the operation effect of the motor.
  • an effective magnetic concentration effect can be formed between adjacent two permanent magnets, thereby further improving the motor stator assembly and rotor assembly.
  • the air gap magnetic density can effectively increase the torque of the motor, reduce the torque fluctuation, and improve the stability of the motor.
  • the permanent magnets can be arranged in a spoke-shaped magnet arrangement or a V-shaped magnet arrangement.
  • the magnetic isolation part includes a magnetically permeable component and/or a non-magnetically permeable component.
  • the magnetic isolation part between adjacent permanent magnets can be set as a magnetically conductive part
  • the rotor assembly can include an annular iron core, and installation grooves for installing the permanent magnets are arranged at intervals on the annular iron core, At the same time, at least a part of the rotor iron core is used to form a magnetic bridge between the installation slots, and the magnetic bridge is the magnetic isolation part, so as to realize the separation of adjacent permanent magnets.
  • the body structure of the rotor core can be used to simplify the processing technology of the rotor assembly, reduce the difficulty of processing, and thereby reduce the manufacturing cost of the motor.
  • the magnetic isolation part may also include non-magnetic conductive components, so as to effectively avoid magnetic flux leakage of the rotor assembly, thereby increasing the magnetic flux density during the operation of the motor and ensuring the operation effect of the motor.
  • the permanent magnets are wrapped with ferrite or rare earth permanent magnets.
  • ferrite or rare earth permanent magnets have good magnetic energy, and by using ferrite or rare earth permanent magnets as the permanent magnets of the rotor assembly, it can ensure that the permanent magnets can effectively provide magnetic energy for a long time, thereby ensuring the long-term stability of the motor running.
  • the normal operation of the motor is guaranteed by limiting the number of pole pairs of the stator winding, and the new harmonic components appearing in the air-gap flux density can be used as the working harmonics of the motor to provide output torque, thus effectively improving the torque density of the motor.
  • the total number of Zr is the number of magnetic isolation parts.
  • an electrical device including the motor according to any one of the above technical solutions.
  • the electrical equipment provided by the present application includes the motor of any one of the above technical solutions, so it has all the beneficial effects of the motor, and will not be repeated here.
  • Fig. 1 shows a schematic structural diagram of a motor provided by an embodiment of the present application
  • Fig. 2 shows a schematic structural diagram of a motor provided by another embodiment of the present application
  • Fig. 3 shows a schematic structural diagram of a motor provided by another embodiment of the present application.
  • Fig. 4 shows a schematic structural diagram of a motor provided by another embodiment of the present application.
  • Fig. 5 shows a schematic structural diagram of a motor provided by another embodiment of the present application.
  • Fig. 6 shows a schematic structural diagram of a motor provided by another embodiment of the present application.
  • Fig. 7 shows a schematic structural diagram of a motor provided by another embodiment of the present application.
  • Fig. 8 shows a schematic structural diagram of a motor provided by another embodiment of the present application.
  • Fig. 9 shows a schematic diagram of the relationship between the angle between the center line of the slot and the center line of the tooth body and the efficiency of the motor during the operation of the motor provided by the embodiment of the present application;
  • Fig. 10 shows a schematic diagram of the relationship between the angle between the slot centerline and the tooth body centerline, the average torque of the motor and the iron loss of the motor during the operation of the motor provided by the embodiment of the present application;
  • Fig. 11 shows a schematic diagram of the magnetic density distribution of the motor when the angle between the slot centerline and the tooth body centerline is -4 degrees during the operation of the motor provided by the embodiment of the present application;
  • Fig. 12 shows a schematic diagram of the magnetic density distribution of the motor when the angle between the center line of the slot and the center line of the tooth body is 0 degrees during the operation of the motor provided by the embodiment of the present application;
  • Fig. 13 shows a schematic diagram of the flux density distribution of the motor when the angle between the centerline of the slot and the centerline of the tooth body is 4 degrees during the operation of the motor provided by the embodiment of the present application.
  • stator assembly 102 first stator, 104 first yoke, 106 first tooth, 108 second stator, 110 second yoke, 112 second tooth, 114 first tooth body, 116 first tooth shoe, 118
  • line L1 in Fig. 1, Fig. 11 and Fig. 13 represents the slot center line of the first stator slot 128 in the radial direction of the first stator 102
  • line L2 represents the diameter of the second tooth 112 in the second stator 108.
  • the tooth body centerline in the direction, ⁇ represents the angle between the slot centerline L1 and the tooth body centerline L2.
  • the line L3 represents the average torque variation curve of the motor
  • the line L4 represents the iron loss variation curve of the motor.
  • the present application proposes a first aspect, and proposes a stator assembly 100, as shown in Figure 1 and Figure 2, comprising: a first stator 102 and a second stator 108, the first stator 102 and the second stator 108 are coaxial set, and the second stator 108 is located outside the first stator 102 .
  • the first stator 102 includes a first yoke 104 and at least two first teeth 106, at least two first teeth 106 are provided on the outer wall of the first yoke 104, and a first yoke 106 is formed between adjacent two first teeth 106.
  • a stator slot 128, the outer wall of the first stator 102 includes a plurality of first grooves 130, the plurality of first grooves 130 at least include the first stator slot 128;
  • the second stator 108 includes a second yoke 110 and at least Two second teeth 112, the second yoke 110 is arranged coaxially with the first yoke 104 and sleeved outside the first yoke 104, at least two second teeth 112 are arranged on the inner wall of the second yoke 110, the second The rotor is placed between the first stator 102 and the second stator 108;
  • the first stator slot 128 has a slot center line L1 in the radial direction of the first stator 102, and the second tooth 112 is in the radial direction of the second stator 108.
  • the tooth direction has the centerline L2 of the tooth body.
  • the angle ⁇ between the slot centerline L1 and the tooth body centerline L2 is greater than or equal to 0 degrees and less than or equal to 72/Ns degrees, where Ns is the number of first grooves 130 .
  • the stator assembly 100 proposed in this application includes a first stator 102 and a second stator 108, the first stator 102 and the second stator 108 are coaxially arranged, and the first stator 102 is located inside the second stator 108, further Specifically, a rotor is placed between the first stator 102 and the second stator 108 , and the rotor is arranged coaxially with the first stator 102 and the second stator 108 .
  • the first stator 102 may include a first yoke 104 and at least two first teeth 106, the first yoke 104 is an annular structure, and the at least two first teeth 106 may be along the periphery of the annular first yoke 104 distributed on the outer wall of the first yoke 104 .
  • the second stator 108 may include a second yoke 110 and at least two second teeth 112, the second yoke 110 is also an annular structure, and the diameter of the second yoke 110 is larger than the diameter of the first yoke 104, The second yoke 110 is sleeved on the outside of the first yoke 104 to form an inner and outer stator structure.
  • At least two second teeth 112 are distributed on the inner wall of the second yoke 110 along the circumferential direction of the ring-shaped second yoke 110 , that is, the first teeth 106 and the second teeth 112 are both toward the first stator 102 and the space between the second stator 108 extends. Furthermore, the rotor assembly 202 is placed between the first teeth 106 and the plurality of second teeth 112 to realize the cooperation between the rotor and the first stator 102 and the second stator 108 , thereby realizing the rotation of the motor rotor assembly 202 .
  • a first stator slot 128 is formed between two adjacent first teeth 106, and in the radial direction of the first stator 102, the first stator slot 128 has a slot center line L1 , in the radial direction of the second stator 108, the second tooth 112 has a tooth body centerline L2, and, along the rotation direction of the rotor assembly (shown by arrows in FIG. 1 and FIG. 11 to FIG.
  • the first The angle ⁇ between the slot center line L1 of the stator slot 128 and the tooth body center line L2 of the second tooth 112 is greater than or equal to 0 degrees and less than or equal to 72/Ns degrees, that is, the first tooth 106
  • the slot centerline L1 rotates along the rotation direction of the rotor assembly 202.
  • the rotated angle ⁇ is greater than or equal to 0 degrees and less than or equal to 72/Ns , where Ns is the total number of first grooves 130 included on the outer wall of the first stator 102 .
  • the power density during the operation of the motor can be effectively improved, the power distribution performance of the motor can be enhanced, and It can also significantly increase the torque density during the operation of the motor, thereby significantly increasing the torque of the motor, and ensuring the operation requirements of the motor for high speed and high torque. It can also effectively improve the flux density in the first stator 102, the second stator 108 and the rotor assembly 202 during the operation of the motor, thereby effectively reducing the loss of the motor and improving the efficiency of the motor operation.
  • the angle ⁇ between the slot centerline L1 of the first stator slot 128 and the tooth body centerline L2 of the second tooth 112 is greater than 0 degrees and less than or equal to 72/Ns degrees.
  • the angle ⁇ between the slot centerline L1 of the first stator slot 128 and the tooth body centerline L2 of the second tooth 112 is 0 degree.
  • the first groove 130 is the first stator slot 128 between two adjacent first teeth 106, at this time, the first groove The number 130 is the number of the first stator slots 128 .
  • the first groove 130 includes the A stator slot 128 also includes an auxiliary tooth slot between two adjacent auxiliary teeth, that is, the number of first grooves 130 at this time is the ratio between the number of first stator slots 128 and the number of auxiliary tooth slots and.
  • the inner wall of the second stator 108 includes a plurality of second grooves 134 , and the total number of the second grooves 134 is the same as the total number of the first grooves 130 included in the outer wall of the first stator 102 . In this way, the distribution of the magnetic field during the operation of the motor is ensured, thereby ensuring the stable operation of the motor.
  • the first groove 130 on the outer wall of the first stator 102 is the number of the first teeth 106
  • the second groove 134 on the inner wall of 112 is the number of the second teeth 112 , that is, the number of the first teeth 106 is the same as that of the second teeth 112 .
  • the number of first grooves 130 on the inner wall of the first tooth 106 is the number of first grooves 130 between adjacent first teeth 106
  • the sum of the number of stator slots 128 and auxiliary tooth slots, the number of second grooves 134 is also the sum of the number of first stator slots 128 and auxiliary tooth slots between adjacent first teeth 106 .
  • the number of first teeth 106 is six, and the end of the first tooth 106 is provided with two auxiliary teeth as
  • the outer wall of the first tooth 106 has 6 first stator slots 128 and 6 first sub-stator slots 132.
  • the total number of first grooves 130 on the outer wall of the first stator 102 is 12.
  • the inner wall of the second stator 108 is also provided with 12 second grooves 134, and the end of the second tooth 112 is not provided with auxiliary teeth, therefore, the number of second grooves 134 on the inner wall of the second stator 108 is the first The number of two teeth 112 is 12.
  • the angle ⁇ between the slot centerline L1 of the first stator slot 128 and the tooth body centerline L2 of the second tooth 112 is 0° to 6°, specifically 4°.
  • the angle of ⁇ is negative, and when L1 is located behind L2, the angle of ⁇ is positive.
  • the abscissa is the angle value of the angle ⁇ between the slot center line L1 of the first stator slot 128 and the tooth body center line L2 of the second tooth 112, and the ordinate is the efficiency value of the motor.
  • the abscissa is the angle value of the angle ⁇ between the slot center line L1 of the first stator slot 128 and the tooth body center line L2 of the second tooth 112
  • L3 is the average torque variation curve of the motor
  • L4 is the change curve of the iron loss of the motor.
  • the density of the lines in the first stator 102 and the second stator 108 indicates the load flux density in the first stator 102 and the second stator 108, that is, it reflects the iron of the motor.
  • the greater the line density the greater the iron loss.
  • the smaller the line density the smaller the iron loss.
  • plan ⁇ is -4° ⁇ is 0° ⁇ is +4° Copper consumption (W) 4.4 4.4 4.4 Iron consumption (W) 4.95 4.14 2.84 Torque (Nm) 0.36 0.41 0.37 output power(W) 37.81 43.15 39.18 Input power (W) 47.2 51.7 46.4 efficiency 80.14% 83.44% 84.37%
  • the angle ⁇ between the slot centerline L1 of the first stator slot 128 and the tooth body centerline L2 of the second tooth 112 can be determined according to the number of stator teeth and auxiliary teeth of the first stator 102 The number is determined to ensure that the loss of the motor is reduced during the operation of the motor and the effect of improving the efficiency of the motor operation is optimal.
  • the stator assembly 100 forms the radial double stator structure of the motor by radially arranging the first stator 102 and the second stator 108, so that the rotor assembly 202 of the motor can be arranged on the first stator 102 and the second stator 102. between the stators 108, so as to effectively increase the power density during the operation of the motor, enhance the power distribution performance of the motor, and effectively reduce the radial volume of the motor, which is beneficial to the miniaturization design of the motor.
  • the flux density in the first stator 102, the second stator 108 and the rotor assembly 202 can be effectively improved during the operation of the motor, thereby effectively Minimize the loss of the motor and improve the efficiency of the motor operation.
  • the first tooth 106 may include a first tooth body 114 and a first tooth shoe 116 : wherein, one end of the first tooth body 114 is connected to the first yoke 104 ;
  • the first tooth shoe 116 is connected to the other end of the first tooth body 114, and the end of the first tooth shoe 116 away from the first tooth body 114 is provided with at least two first auxiliary teeth 118, and two adjacent first auxiliary teeth 118 includes a first auxiliary stator slot 132 , wherein the first groove 130 also includes a first auxiliary stator slot 132 .
  • the power density during the operation of the motor can be effectively improved, the power distribution performance of the motor can be enhanced, and the rotation speed during the operation of the motor can also be significantly improved.
  • Moment density thereby significantly increasing the torque of the motor, ensuring the motor's operating requirements for high speed and high torque.
  • the double-stator motor can effectively reduce the radial volume of the motor while ensuring the performance of the motor, which is beneficial to the miniaturization design of the motor.
  • the first auxiliary teeth 118 at the ends of the first teeth 106, the cogging torque and torque ripple of the motor can be reduced, thereby improving the performance of the motor.
  • the first tooth 106 specifically includes a first tooth body 114 and a first tooth shoe 116, wherein one end of the first tooth body 114 is connected to the first yoke 104, and the first tooth shoe 116 is arranged on the first tooth body 114, furthermore, the end of the first tooth shoe 116 away from the first tooth body 114 is provided with at least two first auxiliary teeth 118, and a first auxiliary stator slot 132 is included between two adjacent first auxiliary teeth 118 .
  • At least two first auxiliary teeth 118 can be used as magnetically conductive components for magnetic conduction; on the other hand, the first auxiliary teeth 118 can also be used as modulation components to realize magnetic field modulation. effect. More harmonic components are introduced into the air gap permeance, so that the performance of the motor is significantly improved.
  • the first groove 130 on the outer wall of the first stator 102 includes both the first groove 130 between adjacent first teeth 106.
  • the stator slot 128 also includes the first auxiliary stator slot 132 between the adjacent first auxiliary teeth 118, that is, the number of the first grooves 130 on the outer wall of the first stator 102 is the first stator slot The sum of the number of 128 and the number of first secondary stator slots 132 .
  • a detachable connection can be set between the first tooth body 114 and the first tooth shoe 116, and at the same time, a detachable connection can also be set between the first tooth body 114 and the first yoke 104, that is, The first tooth body 114 and the first yoke 104 and the first tooth shoe 116 can be arranged as a detachable sheath assembly structure.
  • the first tooth body 114 can be wound on the first tooth body 114 .
  • Winding 124 is made, and then one end of the first tooth body 114 is connected to the first yoke 104 , and finally the first tooth shoe 116 is installed on the other end of the first tooth body 114 .
  • the simplified winding process in the assembly process of the stator assembly 100 is realized, the difficulty of winding is reduced, the slot filling rate of the winding 124 is improved, the output performance of the motor is improved, and waste materials are reduced at the same time.
  • connection between the first tooth body 114 and the first yoke portion 104 may be through a concave-convex structure, that is, a groove or a protrusion is provided at one end of the first tooth body 114 , and correspondingly, the first yoke portion 104
  • the protrusions or grooves matched with the grooves or protrusions are arranged at the corresponding positions, so that the connection between the first tooth body 114 and the first yoke 104 can be realized through the cooperation of the grooves and the protrusions.
  • connection between the first tooth body 114 and the first tooth shoe 116 can also be made through a concave-convex structure, that is, between the first tooth shoe 116 and the first tooth body 114 through mutually matched protrusions and grooves. connection to simplify the winding process.
  • the number of the second teeth 112 is equal to the number of the first grooves 130 .
  • the end of the second tooth 112 of the second stator 108 may or may not be provided with auxiliary teeth.
  • the quantity of the second tooth 112 is equal to the quantity of the first groove 130 on the outer wall of the first stator 102, to ensure that the quantity of the second groove 134 on the inner wall of the second stator 108 is the same as the number of the second groove 134 on the outer wall of the first stator 102.
  • the number of the first grooves 130 is equal, thereby ensuring the distribution of the magnetic field during the operation of the motor, thereby ensuring the stable operation of the motor.
  • the second tooth 112 may include a second tooth body 120 and a second tooth shoe 122 , wherein one end of the second tooth body 120 is yokeed with the second stator 108
  • the second tooth shoe 122 is connected to the other end of the second tooth body 120, and the second tooth shoe 122 is provided with at least two second auxiliary teeth 126 at the end far away from the second tooth body 120, and two adjacent second teeth Second auxiliary stator slots 136 are included between the two auxiliary teeth 126 , wherein the sum of the number of second teeth 112 and the number of second auxiliary stator slots 136 is equal to the number of first grooves 130 .
  • the power density during the operation of the motor can be effectively improved, the power distribution performance of the motor can be enhanced, and the torque density during the operation of the motor can also be significantly improved, thereby significantly improving the performance of the motor.
  • the torque ensures the motor's high speed and high torque operation requirements.
  • the double-stator motor can effectively reduce the radial volume of the motor while ensuring the performance of the motor, which is beneficial to the miniaturization design of the motor.
  • the second auxiliary teeth 126 at the ends of the second teeth 112 the cogging torque and torque fluctuation of the motor are reduced, and the performance of the motor is improved.
  • the second tooth 112 specifically includes a second tooth body 120 and a second tooth shoe 122, wherein one end of the second tooth body 120 is connected to the second yoke 110, and the second tooth shoe 122 is arranged on the second tooth body 120, further, the end of the second tooth shoe 122 away from the second tooth body 120 is provided with at least two second auxiliary teeth 126, and there are second auxiliary stator slots 136 between adjacent two second auxiliary teeth 126 .
  • at least two second auxiliary teeth 126 can be used as magnetic permeable components for magnetic conduction; on the other hand, at least two second auxiliary teeth 126 can also be used as modulation components, realizing The role of magnetic field modulation. More harmonic components are introduced into the air gap permeance, so that the performance of the motor is significantly improved.
  • the second stator slot 138 is included between two adjacent second teeth 112, and the adjacent second tooth shoe 122 on the same second tooth shoe 122
  • a second secondary stator slot 136 is formed between the two second secondary teeth 126, and the second groove 134 includes both the second stator slot 138 and the second secondary stator slot 136, by limiting the number of the second teeth 112 to the second secondary
  • the sum of the quantity of stator slots 136 is equal to the quantity of the first groove 130 on the outer wall of the first stator 102, to ensure that the quantity of the second groove 134 on the inner wall of the second stator 108 is the same as that of the first groove 134 on the outer wall of the first stator 102.
  • the number of grooves 130 is equal to ensure the distribution of the magnetic field during the operation of the motor, thereby ensuring the stable operation of the motor.
  • a detachable connection can be set between the second tooth body 120 and the second tooth shoe 122, and at the same time, a detachable connection can also be set between the second tooth body 120 and the second yoke 110, that is, The second tooth body 120 and the second yoke 110 and the second tooth shoe 122 can be arranged as a detachable sheath assembly structure.
  • the second tooth body 120 can be wound on the second tooth body 120 first.
  • Winding 124 is made, and then one end of the second tooth body 120 is connected to the second yoke 110 , and finally the second tooth shoe 122 is installed on the other end of the second tooth body 120 .
  • the simplified winding process in the assembly process of the stator assembly 100 is realized, the difficulty of winding is reduced, the slot filling rate of the winding 124 is improved, the output performance of the motor is improved from the perspective of stator preparation, and waste materials can be reduced at the same time.
  • connection between the second tooth body 120 and the second yoke portion 110 may be through a concave-convex structure, that is, a groove or a protrusion is provided at one end of the second tooth body 120 , and correspondingly, the second yoke portion 110
  • the protrusions or grooves matched with the grooves or protrusions are arranged at the corresponding positions, so that the connection between the second tooth body 120 and the second yoke 110 can be realized through the cooperation of the grooves and the protrusions.
  • connection between the second tooth body 120 and the second tooth shoe 122 can also be made through a concavo-convex structure, that is, between the second tooth shoe 122 and the second tooth body 120 through mutually matched protrusions and grooves. connection to simplify the winding process.
  • the stator assembly 100 further includes windings 124, and the windings 124 are arranged in the first stator 102 and the second stator 108. at least one up.
  • the stator assembly 100 can cooperate with the magnetic components on the rotor assembly 202 to ensure the stable output of the motor torque and speed, and ensure the operating efficiency of the motor.
  • the winding 124 can be arranged on one of the first stator 102 or the second stator 108 to realize the requirements of the motor for different magnetic field distributions, thereby realizing different torque outputs of the motor. Moreover, only one of the first stator 102 and the second stator 108 is provided with the winding 124, on the basis of ensuring the operating efficiency of the motor, the material of the winding 124 can also be saved, effectively reducing the manufacturing cost of the motor, and also simplifying Manufacturing structure.
  • winding 124 can also be arranged on the first stator 102 and the second stator 108 at the same time, so as to increase the flux density of the motor and further increase the torque output of the motor.
  • winding 124 is disposed on the first yoke 104 and/or the second yoke 110 .
  • the winding 124 may be disposed on the first yoke 104 of the first stator 102 or disposed on the second yoke 110 of the second stator 108, thereby further improving the air gap between the stator assembly 100 and the rotor assembly 202
  • the magnetic field waveform in the rotor assembly 202 makes the magnetic field formed by the permanent magnets of the rotor assembly 202 in the air gap closer to a sinusoidal shape, so as to further reduce the cogging torque and torque ripple of the motor, thereby improving the stability of the motor during operation.
  • the winding 124 can be separately provided on the first yoke 104 of the first stator 102, or separately provided on the second yoke 110 of the second stator 108, or can be It is arranged on the first yoke part 104 and the second yoke part 110 at the same time, so as to ensure the operation effect of the motor.
  • one winding 124 is provided on each first tooth 106 ; and/or one winding 124 is provided on each second tooth 112 .
  • each winding 124 when the windings 124 are provided on the first stator 102, each winding 124 can be provided on one first tooth 106; correspondingly, when the windings 124 are provided on the second stator 108, each The winding 124 may be provided on one of the second teeth 112 . That is to say, the winding 124 is arranged in a concentrated winding manner, so that during the operation of the motor, the winding process of the winding 124 can be simplified on the basis of ensuring that the air-gap magnetic field is sufficiently sinusoidal, thereby reducing the manufacturing difficulty of the motor , to reduce manufacturing costs.
  • the winding 124 can be wound on the first tooth body 114 or the second tooth body 120 first, and then one end of the first tooth body 114 or the second tooth body 120 and the first yoke 104 or the second yoke 110 , and finally install the first tooth shoe 116 or the second tooth shoe 122 to the other end of the first tooth body 114 or the second tooth body 120 .
  • the simplified winding process in the assembly process of the stator assembly 100 is realized, the difficulty of winding is reduced, the slot filling rate of the winding 124 is improved, the output performance of the motor is improved from the perspective of stator preparation, and waste materials can be reduced at the same time.
  • one winding 124 is provided on every two adjacent first teeth 106 ; and/or one winding 124 is provided on every two adjacent second teeth 112 .
  • each winding 124 when windings 124 are provided on the first stator 102, each winding 124 can be wound on two first teeth 106 at the same time; correspondingly, when windings 124 are provided on the second stator 108, each The winding 124 can also be wound on the two second teeth 112 at the same time, that is to say, the winding 124 is arranged in a distributed winding manner.
  • the sine of the air gap magnetic field between the stator assembly 100 and the rotor assembly 202 can be effectively improved, thereby further reducing the cogging torque and torque fluctuation of the motor, thereby improving the stability of the motor during operation sex.
  • the winding 124 can also be set as a concentric winding, specifically, the coil of the winding 124 is set in a zigzag shape, that is, the coil is set as a multi-layer concentric coil, and each layer of coil is wound with a different number of stator teeth.
  • a winding 124 is provided on every two adjacent first teeth 106 or every adjacent two second teeth 112, or a winding 124 may be provided on every adjacent two first teeth 106, and at the same time A winding 124 is provided on every two adjacent second teeth 112 .
  • a motor 200 including: a rotor assembly 202; a stator assembly 100 as in any one of the above embodiments, at least a part of the stator assembly 100 is located Inside the rotor assembly 202.
  • stator assembly 100 is located in the rotor assembly 202, specifically, the stator assembly 100 and the rotor assembly 202 are concentrically arranged to ensure that the rotor assembly 202 can rotate relative to the stator assembly 100, so as to realize the motor 200 PTO.
  • a part of the stator assembly 100 is located in the rotor assembly 202, and the stator assembly 100 can also be integrally arranged in the rotor assembly 202 in the axial direction, so as to realize the difference between the permanent magnets of the rotor assembly 202 and the windings 124 of the stator assembly 100 Coordination method.
  • the power density during the operation of the motor 200 can be effectively improved, the power distribution performance of the motor 200 can be enhanced, and the operation of the motor 200 can also be significantly improved.
  • the torque density in the process can significantly increase the torque of the motor 200, ensuring the operation requirements of the motor 200 for high speed and high torque.
  • the double-stator motor can effectively reduce the radial volume of the motor 200 while ensuring the performance of the motor 200 , which is beneficial to the miniaturization design of the motor 200 .
  • the rotor assembly 202 includes a plurality of permanent magnets 204 and a plurality of magnetic isolation parts 206, and a plurality of permanent magnets 204 and a plurality of magnetic isolation parts The sections 206 are arranged alternately.
  • the rotor assembly 202 may include permanent magnets 204 and magnetic isolation parts 206 , and the number of permanent magnets 204 is the same as the number of magnetic isolation parts 206 . Further, in the circumferential direction of the rotor assembly 202, a plurality of permanent magnets 204 and a plurality of magnetic isolation parts 206 are arranged alternately and form a ring, so that the rotor assembly 202 can be arranged concentrically with the first stator 102 and the second stator 108, Further, the diameter of the rotor assembly 202 can be set to be larger than the diameter of the first stator 102 and smaller than the diameter of the second stator 108 , so as to ensure that the rotor assembly 202 can be sleeved between the first stator 102 and the second stator 108 .
  • the magnetic field of the permanent magnets 204 can effectively form a magnetic field loop between the stator and the rotor, thereby ensuring that the winding 124 and the magnetic field of the permanent magnets 204 can be carried out Cooperate effectively to ensure the running effect of the motor 200.
  • the two adjacent permanent magnets 204 can form an effective magnetic concentration effect so far, thereby further improving the relationship between the stator assembly 100 and the rotor assembly 202 in the motor 200.
  • the magnetic density of the air gap between them can effectively increase the torque of the motor 200, reduce the torque fluctuation, and improve the stability of the motor 200.
  • the permanent magnets 204 may be arranged in a spoke-shaped magnet arrangement or a V-shaped magnet arrangement.
  • the magnetic isolation part 206 includes a magnetically permeable component and/or a non-magnetically permeable component.
  • the magnetic isolation part 206 between adjacent permanent magnets 204 can be set as a magnetically conductive part
  • the rotor assembly 202 can include an annular iron core, on which the permanent magnets 204 are installed at intervals
  • the main body of the iron core is used to form a magnetic bridge between the installation grooves, and the magnetic bridge is the magnetic isolation part 206, so as to realize the separation of the adjacent permanent magnets 204.
  • the body structure of the annular iron core can be used to simplify the processing technology of the rotor assembly 202 and reduce the processing difficulty, thereby reducing the manufacturing cost of the motor 200 .
  • the magnetic isolation part 206 may also include non-magnetic conductive components, so as to effectively avoid magnetic flux leakage of the rotor assembly 202 , thereby increasing the magnetic flux density during the operation of the motor 200 and ensuring the operation effect of the motor 200 .
  • the permanent magnet 204 is wrapped with ferrite or rare earth permanent magnet.
  • ferrite or rare-earth permanent magnets have good magnetic energy.
  • ferrite or rare-earth permanent magnets as the permanent magnets 204 of the rotor assembly 202, it can be ensured that the permanent magnets 204 can effectively provide magnetic energy for a long time, thereby ensuring that the motor 200 has a long-term stable operation.
  • the normal operation of the motor 200 is ensured through the limitation of the number of pole pairs of the stator winding 124, and the new harmonic components appearing in the air-gap magnetic density can also be used as the working harmonics of the motor 200,
  • the output torque is provided for the motor 200 , thereby effectively improving the torque density of the motor 200 .
  • the total number of Zr is the number of magnetic isolation parts 206 .
  • the first groove 130 on the outer wall of the first stator 102 includes both the first grooves 130 between adjacent first teeth 106.
  • the stator slot 128 also includes the first auxiliary stator slot 132 between the adjacent first auxiliary teeth 118, that is, the number of the first grooves 130 on the outer wall of the first stator 102 is the first stator slot The sum of the number of 128 and the number of first secondary stator slots 132 .
  • the first groove 130 is the first stator slot 128 between two adjacent first teeth 106. At this time, the number of first grooves 130 That is, the number of the first stator slots 128 .
  • an electrical device including the motor 200 in any one of the above-mentioned embodiments.
  • the electrical equipment provided by the present application includes the motor 200 of any one of the above-mentioned embodiments. Therefore, by setting the stator assembly 100 of the motor 200 as a double stator structure of the first stator 102 and the second stator 108, and the motor 200
  • the rotor assembly 202 is arranged between the first stator 102 and the second stator 108, which can effectively reduce the volume of the electrical equipment while ensuring the efficiency of the operation process of the electrical equipment, which is conducive to the miniaturization design of the electrical equipment .
  • connection refers to two or more than two.
  • connection can be fixed connection, detachable connection, or integral connection; it can be directly connected or through an intermediate The medium is indirectly connected.

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Abstract

本申请提出了一种定子组件、电机和电器设备，定子组件包括：第一定子，包括第一轭部和至少两个第一齿，至少两个第一齿设置第一轭部的外壁，相邻两个第一齿之间形成第一定子槽，第一定子的外壁包括多个第一凹槽，多个第一凹槽至少包括第一定子槽；第二定子，包括第二轭部和至少两个第二齿，第二轭部与第一轭部同轴设置且套设于第一轭部外，至少两个第二齿设置于第二轭部的内壁，第一定子和第二定子之间用于放置转子组件；第一定子槽在第一定子的径向方向上具有槽中心线，第二齿在第二定子的径向方向具有齿身中心线，沿转子的转动方向上，槽中心线到齿身中心线之间的角度大于或等于0度且小于或等于72/Ns度，其中，Ns为第一凹槽的数量。

Description

定子组件、电机和电器设备
本申请要求于2021年12月17日提交到中国国家知识产权局、申请号为“202111554061.9”，申请名称为“定子组件、电机和电器设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
本申请要求于2021年12月17日提交到中国国家知识产权局、申请号为“202123184859.7”，申请名称为“定子组件、电机和电器设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及电机技术领域，具体而言，涉及一种定子组件、电机和电器设备。
背景技术
相关技术中，定子组件中包含双定子的电机得到越来越多的应用，而在电机运行过程中，如何降低电机的损耗，并且提高电机的运行效率，成为了亟待解决的问题。
申请内容
本申请旨在至少解决现有技术中存在的技术问题之一。
为此，本申请第一方面提供了一种定子组件。
本申请的第二方面提供了一种电机。
本申请的第三方面提供了一种电器设备。
本申请的第一方面提供了一种定子组件，包括：第一定子，第一定子包括第一轭部和至少两个第一齿，至少两个第一齿设置第一轭部的外壁，相邻两个第一齿之间形成第一定子槽，第一定子的外壁包括多个第一凹槽，多个第一凹槽至少包括第一定子槽；第二定子，第二定子包括第二轭部和至少两个第二齿，第二轭部与第一轭部同轴设置且套设于第一轭部外，至少两个第二齿设置于第二轭部的内壁，第一定子和第二定子之间用于放置转子组件；第一定子槽 在第一定子的径向方向上具有槽中心线，第二齿在第二定子的径向方向具有齿身中心线，沿转子组件的转动方向上，槽中心线到齿身中心线之间的夹角大于或等于0度且小于或等于72/Ns度，其中，Ns为第一凹槽的数量。
本申请所提出的定子组件，包括第一定子和第二定子，第一定子和第二定子同轴设置，并且第一定子位于第二定子的内部，进一步地，第一定子和第二定子之间用于放置转子，且转子与第一定子和第二定子均同轴设置。
具体地，第一定子可以包括第一轭部和至少两个第一齿，第一轭部为环形结构，至少两个第一齿可以沿环形第一轭部的周向分布与第一轭部的外壁上。相应地，第二定子可以包括第二轭部和至少两个第二齿，第二轭部同样为环形结构，并且第二轭部的直径大于第一轭部的直径，第二轭部套设于第一轭部的外部，以组成内外定子结构。进一步地，至少两个第二齿沿环形第二轭部的周向分布于第二轭部的内壁上，也即，第一齿和第二齿均向第一定子和第二定子之间的空间延伸。进一步地，第一齿和多个第二齿之间用于放置转子组件，以实现转子组件与第一定子和第二定子的配合，进而实现电机转子组件的转动。
进一步地，相邻两个第一齿之间形成第一定子槽，在第一定子的径向方向上，第一定子槽具有槽中心线，在第二定子的径向方向上，第二齿具有齿身中心线，并且，沿转子组件的转动方向上，第一定子槽的槽中心线到第二齿的齿身中心线之间的夹角为大于或等于0度且小于或等于72/Ns度，也即，将第一齿的槽中心线沿转子组件的转动方向进行转动，当槽中心线到达第二齿的齿身中心线时，转动过的角度大于或等于0度且小于或等于72/Ns度，其中，Ns为第一定子外壁上所包括的第一凹槽的总数量。通过第一定子和第二定子，以及第一定子和第二定子之间角度的设置，既可以有效地提高电机运行过程中的功率密度，增强电机的功率分配性能，并且还能够显著提高电机运行过程中的转矩密度，进而显著提高电机的转矩，保证了电机对于高转速和高转矩的运行需求。还可以在电机运行过程中有效地改善第一定子和第二定子以及转子组件中的磁密，进而有效地减小电机的损耗，提高电机运行的效率。
本申请提供的定子组件，通过径向设置第一定子和第二定子，组成电机的径向双定子结构，从而可以将电机的转子设置于第一定子和第二定子之间，从而有效地提高电机运行过程中的功率密度，增强电机的功率分配性能，还能够 有效地减小电机的径向体积，有利于电机的小型化设计。进一步地，通过第一定子和第二定子之间角度的限定，可以在电机运行过程中有效地改善第一定子和第二定子以及转子中的磁密，进而有效地减小电机的损耗，提高电机运行的效率。
根据本申请提供的定子组件，还可以具有以下附加技术特征：
在上述技术方案中，进一步的，第一齿包括：第一齿身，第一齿身的一端与第一轭部相连接；第一齿靴，第一齿靴于第一齿身的另一端相连接，第一齿靴远离第一齿身的一端设置有至少两个第一副齿，相邻两个第一副齿之间包括第一副定子槽，其中，第一凹槽还包括第一副定子槽。
在该技术方案中，第一齿具体包括第一齿身和第一齿靴，其中，第一齿身的一端与第一轭部相连接，第一齿靴设置于第一齿身的另一端，进一步地，第一齿靴远离第一齿身的一端设置有至少两个第一副齿，相邻两个第一副齿之间包括第一副定子槽。通过至少两个第一副齿的设置，一方面，至少两个第一副齿可以作为导磁部件进行导磁，一方面，至少两个第一副齿还可作为调制部件，实现磁场调制的作用。使得气隙磁导中引入较多的谐波分量，这样，使得电机的性能得到了明显的提升。
进一步地，由于第一齿的端部设置有至少两个第一副齿，因此，第一定子外壁上的第一凹槽既包括相邻第一齿之间的第一定子槽，还包括相邻第一副齿之间的第一副定子槽，也即，此时第一定子外壁上的第一凹槽的数量为第一定子槽的数量与第一副定子槽的数量之和。
在上述任一技术方案中，进一步的，第二齿的数量等于第一凹槽的数量。
在该技术方案中，基于第二齿的端部未设置有副齿的情况下，通过限定第二齿的数量与第一定子外壁上的第一凹槽的数量相等，以保证第二定子的内壁上的第二凹槽的数量与第一定子外壁上的第一凹槽的数量相等，进而保证电机运行过程中磁场的分布，进而保证电机稳定运行。
在上述任一技术方案中，进一步的，第二齿包括：第二齿身，第二齿身的一端与第二定子轭部相连接；第二齿靴，第二齿靴与第二齿身的另一端相连接，第二齿靴远离第二齿身的一端设置有至少两个第二副齿，相邻两个第二副齿之间包括第二副定子槽，其中，第二齿的数量与第二副定子槽的数量之和等于第 一凹槽的数量。
在该技术方案中，基于第二齿的端部设置有至少两个第二副齿的情况下，通过限定第二齿的数量与述第二副定子槽的数量之和等于第一定子外壁上第一凹槽的数量，以保证第二定子的内壁上的第二凹槽的数量与第一定子外壁上的第一凹槽的数量相等，进而保证电机运行过程中磁场的分布，进而保证电机稳定运行。
具体地，第二齿具体包括第二齿身和第二齿靴，其中，第二齿身的一端与第二轭部相连接，第二齿靴设置于第二齿身的另一端，进一步地，第二齿靴远离第二齿身的一端设置有至少两个第二副齿，相邻两个第二副齿之间包括第二副定子槽。通过至少两个第二副齿的设置，一方面，至少两个第二副齿可以作为导磁部件进行导磁，一方面，至少两个第二副齿还可作为调制部件，实现磁场调制的作用。使得气隙磁导中引入较多的谐波分量，这样，使得电机的性能得到了明显的提升。
在上述任一技术方案中，进一步的，定子组件还包括绕组，绕组设置于第一定子和第二定子中的至少一个上。
在该技术方案中，通过绕组的设置，可以实现定子组件与转子组件上的磁性部件进行配合运行，以保证电机转矩和转速的稳定输出，保证电机运行效率。
具体地，绕组可以设置于第一定子或第二定子的其中一个上，以实现电机对于不同磁场分布的要求，进而实现电机的不同转矩输出。并且，仅在第一定子和第二定子的其中一个上设置绕组，在保证电机运行效率的基础上，还能够节省绕组材料，有效地减少电机的制造成本，同样也能简化制造结构。
进一步地，绕组还可以同时设置于第一定子和第二定子上，以实现提高电机的磁密，进一步提高电机的转矩输出。
在上述任一技术方案中，进一步的，绕组设置于第一轭部和/或第二轭部上。
在该技术方案中，绕组可以设置于第一定子的第一轭部上或者设置于第二定子的第二轭部上，从而进一步改善定子组件与转子组件之间的气隙中的磁场波形，进而使得转子组件的永磁体在气隙中所形成的磁场更加接近正弦形，以进一步降低电机的齿槽转矩和转矩波动，进而提高电机运行过程中的稳定性。
进一步地，根据电机的具体运行参数和运行环境，绕组可以单独设置于第一定子的第一轭部上，或单独设置于第二定子的第二轭部上，也可以同时设置于第一轭部和第二轭部上，以保证电机的运行效果。
在上述任一技术方案中，进一步的，每个第一齿上设置有一个绕组；和/或每个第二齿上设置有一个绕组。
在该技术方案中，在第一定子上设置有绕组时，每个绕组可以设置于一个第一齿上，相应地，在第二定子上设置有绕组时，每个绕组可以设置于一个第二齿上。也就是说，以集中绕组的方式进行绕组的设置，从而在电机运行过程中，能够在保证气隙磁场具有足够的正弦性的基础上，可以简化绕组缠绕工艺，进而降低电机的制造难度，降低制造成本。
在上述任一技术方案中，进一步的，每相邻两个第一齿上设置有一个绕组；和/或每相邻两个第二齿上设置有一个绕组。
在该技术方案中，在第一定子上设置有绕组时，每个绕组可以同时绕设于两个第一齿上，相应地，在第二定子上设置有绕组时，每个绕组也可以同时绕设于两个第二齿上，也就是说，以分布式绕组的方式进行绕组的设置。通过分布式绕组的方式，可有效地提升定子组件与转子组件之间的气隙磁场的正弦性，从而进一步降低电机的齿槽转矩和转矩波动，进而提升电机运行过程中的稳定性。
进一步地，绕组还可以设置为同心式绕组，具体地，将绕组的线圈设置为回字形，也即将线圈设置为多层同心设置的线圈，每一层线圈缠绕不同数量的定子齿。
进一步地，每相邻两个第一齿或每相邻两个第二齿上均设置有一个绕组。
根据本申请的第二方面，提出了一种电机，包括：转子组件；如上述技术方案中任一项的定子组件，定子组件的至少一部分位于转子组件内。
本申请提供的电机，定子组件的至少一部分位于转子组件内，具体地，定子组件与转子组件同心设置，以保证转子组件能够相对于定子组件转动，以实现电机的动力输出。其中，定子组件的一部分位于转子组件内，也可将定子组件轴向上的整体设置于转子组件内，以实现转子组件的永磁体与定子组件的绕组之间的不同配合方式。
进一步地，通过定子组件的第一定子和第二定子的设置，可以有效地提高电机运行过程中的功率密度，增强电机的功率分配性能，并且还能够显著提高电机运行过程中的转矩密度，进而显著提高电机的转矩，保证了电机对于高转速和高转矩的运行需求。相比于相关技术中的电机，双定子电机在保证电机性能的同时，还能够有效地减小电机的径向体积，有利于电机的小型化设计。
在上述任一技术方案中，进一步地，转子组件包括多个永磁体和多个隔磁部，多个永磁体和多个隔磁部交替排布。
在该技术方案中，转子组件可以包括永磁体和隔磁部，并且，永磁体的数量和隔磁部的数量相同。进一步地，多个永磁体和多个隔磁部交替排布并形成环形，从而使得转子组件能够与第一定子和第二定子同心设置，进一步地，转子组件的直径可以设置为大于第一定子的直径并小于第二定子的直径，进而保证转子组件能够套设于第一定子和第二定子之间。
通过多个永磁体和多个隔磁部交替排布，可以永磁体的磁场能够有效地在定子和转子之间形成磁场回路，进而保证绕组与永磁体的磁场之间能够进行有效地配合，以保证电机的运行效果。
在上述任一技术方案中，进一步地，相邻两个永磁体的极性相反。
在该技术方案中，通过将相邻两个永磁体的极性设置为相反，可以使得相邻两个永磁体之间形成有效地聚磁效应，从而进一步提高电机定子组件和转子组件之间的气隙磁密，进而能够有效地提高电机转矩，并减小转矩波动，提高电机稳定性。
进一步地，永磁体可以采用轮辐型磁铁排布方式或V字形磁铁排布方式进行设置。
在上述任一技术方案中，进一步地，隔磁部包括导磁部件和/或非导磁部件。
在该技术方案中，相邻永磁体之间的隔磁部可以设置为导磁部件，具体地，转子组件可以包括环形铁芯，在环形铁芯上间隔设置用于安装永磁体的安装槽，同时在安装槽之间利用转子铁芯的至少一部分形成磁桥，该磁桥即为隔磁部，从而实现对相邻永磁体进行间隔。通过以上设置方式，可以利用转子铁芯的本体结构，简化转子组件的加工工艺，降低加工难度，从而降低电机的制造 成本。
进一步地，隔磁部还可以包括非导磁部件，从而可以有效地避免转子组件发生漏磁，进而提高电机运行过程中的磁密，保证电机的运行效果。
在上述任一技术方案中，进一步地，永磁体包铁氧体或稀土永磁体。
在该技术方案中，铁氧体或稀土永磁体具有良好的磁能，通过采用铁氧体或稀土永磁体作为转子组件的永磁体，能够保证永磁体能够长期有效地提供磁能，进而保证电机长期稳定的运行。
在上述任一技术方案中，进一步地，定子组件的绕组的极对数满足以下关系式：Pa＝∣Ns±Zr/2∣；其中，Pa为定子组件的绕组的极对数，Ns为第一定子的第一凹槽的总数量，Zr为隔磁部的数量。
在该技术方案中，通过定子绕组极对数的限定，保证了电机的正常运行，并且，还能够使气隙磁密中出现的新的谐波成分可作为电机的工作谐波，为电机提供输出转矩，从而有效提升了电机的转矩密度。具体地，定子组件的绕组的极对数满足以下关系式：Pa＝∣Ns±Zr/2∣；其中，Pa为定子组件的绕组的极对数，Ns为第一定子的第一凹槽的总数量，Zr为隔磁部的数量。
根据本申请的第三方面，提出了一种电器设备，包括上述技术方案中任一项的电机。
本申请提供的电器设备，因包含了上述技术方案中任一项的电机，因此具有该电机的全部有益效果，在此不做赘述。
本申请的附加方面和优点将在下面的描述部分中变得明显，或通过本申请的实践了解到。
附图说明
本申请的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解，其中：
图1示出了本申请一个实施例提供的电机的结构示意图；
图2示出了本申请另一个实施例提供的电机的结构示意图；
图3示出了本申请又一个实施例提供的电机的结构示意图；
图4示出了本申请又一个实施例提供的电机的结构示意图；
图5示出了本申请又一个实施例提供的电机的结构示意图；
图6示出了本申请又一个实施例提供的电机的结构示意图；
图7示出了本申请又一个实施例提供的电机的结构示意图；
图8示出了本申请又一个实施例提供的电机的结构示意图；
图9示出了本申请实施例提供的电机运行过程中槽中心线到齿身中心线之间的角度与电机的效率之间的关系示意图；
图10示出了本申请实施例提供的电机运行过程中槽中心线到齿身中心线之间的角度与电机的平均转矩和电机的铁耗之间的关系示意图；
图11示出了本申请实施例提供的电机运行过程中槽中心线到齿身中心线之间的角度为-4度时电机的磁密分布示意图；
图12示出了本申请实施例提供的电机运行过程中槽中心线到齿身中心线之间的角度为0度时电机的磁密分布示意图；
图13示出了本申请实施例提供的电机运行过程中槽中心线到齿身中心线之间的角度为4度时电机的磁密分布示意图。
其中，图1至图8、以及图11至图13中的附图标记与部件之间的对应关系为：
100定子组件，102第一定子，104第一轭部，106第一齿，108第二定子，110第二轭部，112第二齿，114第一齿身，116第一齿靴，118第一副齿，120第二齿身，122第二齿靴，124绕组，126第二副齿，128第一定子槽，130第一凹槽，132第一副定子槽，134第二凹槽，136第二副定子槽，138第二定子槽，200电机，202转子组件，204永磁体，206隔磁部。
具体实施方式
为了能够更清楚地理解本申请的上述目的、特征和优点，下面结合附图和具体实施方式对本申请进行进一步的详细描述。需要说明的是，在不冲突的情况下，本申请的实施例及实施例中的特征可以相互组合。
在下面的描述中阐述了很多具体细节以便于充分理解本申请，但是，本申请还可以采用其他不同于在此描述的方式来实施，因此，本申请的保护范围并不受下面公开的具体实施例的限制。
下面参照图1至图13来描述根据本申请一些实施例提供的定子组件、电机和电器设备。其中，图1、图11和图13中线条L1表示第一定子槽128在第一定子102的径向方向上的槽中心线，线条L2表示第二齿112在第二定子108的径向方向的齿身中心线，α表示槽中心线L1到齿身中心线L2之间的夹角。图10中，线条L3表示电机的平均转矩变化曲线，线条L4表示电机的铁损耗变化曲线。
本申请提出了第一方面，提出了一种定子组件100，如图1和图2所示，包括：第一定子102和第二定子108，第一定子102与第二定子108同轴设置，并且第二定子108位于第一定子102的外部。其中，第一定子102包括第一轭部104和至少两个第一齿106，至少两个第一齿106设置第一轭部104的外壁，相邻两个第一齿106之间形成第一定子槽128，第一定子102的外壁包括多个第一凹槽130，多个第一凹槽130至少包括第一定子槽128；第二定子108包括第二轭部110和至少两个第二齿112，第二轭部110与第一轭部104同轴设置且套设于第一轭部104外，至少两个第二齿112设置于第二轭部110的内壁，第一定子102和第二定子108之间用于放置转子；第一定子槽128在第一定子102的径向方向上具有槽中心线L1，第二齿112在第二定子108的径向方向具有齿身中心线L2，沿转子的转动方向上，槽中心线L1到齿身中心线L2之间的夹角α为大于或等于0度且小于或等于72/Ns度，其中，Ns为第一凹槽130的数量。
本申请所提出的定子组件100，包括第一定子102和第二定子108，第一定子102和第二定子108同轴设置，并且第一定子102位于第二定子108的内部，进一步地，第一定子102和第二定子108之间用于放置转子，且转子与第一定子102和第二定子108均同轴设置。
具体地，第一定子102可以包括第一轭部104和至少两个第一齿106，第一轭部104为环形结构，至少两个第一齿106可以沿环形第一轭部104的周向分布与第一轭部104的外壁上。相应地，第二定子108可以包括第二轭部110和至少两个第二齿112，第二轭部110同样为环形结构，并且第二轭部110的直径大于第一轭部104的直径，第二轭部110套设于第一轭部104的外部，以组成内外定子结构。进一步地，至少两个第二齿112沿环形第二轭部110的周 向分布于第二轭部110的内壁上，也即，第一齿106和第二齿112均向第一定子102和第二定子108之间的空间延伸。进一步地，第一齿106和多个第二齿112之间用于放置转子组件202，以实现转子与第一定子102和第二定子108的配合，进而实现电机转子组件202的转动。
进一步地，如图1所示，相邻两个第一齿106之间形成第一定子槽128，在第一定子102的径向方向上，第一定子槽128具有槽中心线L1，在第二定子108的径向方向上，第二齿112具有齿身中心线L2，并且，沿转子组件的转动方向上(如图1以及图11至图13中箭头所示)，第一定子槽128的槽中心线L1到第二齿112的齿身中心线L2之间的夹角α为大于或等于0度且小于或等于72/Ns度，也即，将第一齿106的槽中心线L1沿转子组件202的转动方向进行转动，当槽中心线L1到达第二齿112的齿身中心线L2时，转动过的角度α为大于或等于0度且小于或等于72/Ns度，其中，Ns为第一定子102外壁上所包括的第一凹槽130的总数量。通过第一定子102和第二定子108，以及第一定子102和第二定子108之间角度的设置，既可以有效地提高电机运行过程中的功率密度，增强电机的功率分配性能，并且还能够显著提高电机运行过程中的转矩密度，进而显著提高电机的转矩，保证了电机对于高转速和高转矩的运行需求。还可以在电机运行过程中有效地改善第一定子102和第二定子108以及转子组件202中的磁密，进而有效地减小电机的损耗，提高电机运行的效率。
具体地，如图1所示，第一定子槽128的槽中心线L1到第二齿112的齿身中心线L2之间的夹角α为大于0度且小于或等于72/Ns度。
具体地，如图2所示，第一定子槽128的槽中心线L1到第二齿112的齿身中心线L2之间的夹角α为0度。
具体地，在第一齿106的端部未设置有副齿时，第一凹槽130即为相邻两个第一齿106之间的第一定子槽128，此时，第一凹槽130的数量即为第一定子槽128的数量。在第一齿106的端部设置有至少副齿时，相邻两个副齿之间形成副齿槽，此时，第一凹槽130即包括相邻两个第一齿106之间的第一定子槽128，还包括相邻两个副齿之间的副齿槽，也即，此时第一凹槽130的数量即为第一定子槽128的数量与副齿槽的数量之和。
进一步地，第二定子108的内壁上所包括多个第二凹槽134，第二凹槽134的总数量与第一定子102的外壁上所包括的第一凹槽130的总数量相同。从而保证电机运行过程中磁场的分布，进而保证电机稳定运行。具体地，在第一齿106的端部和第二齿112的端部均未设置副齿时，第一定子102外壁的第一凹槽130即为第一齿106的数量，第二齿112内壁的第二凹槽134即为第二齿112的数量，也即第一齿106与第二齿112的数量相同。在第一吃的端部设置有副齿而第二齿112的端部未设置有副齿时，第一齿106内壁的第一凹槽130数量即为相邻第一齿106之间的第一定子槽128与副齿槽数量之和，第二凹槽134的数量也同样为相邻第一齿106之间的第一定子槽128与副齿槽数量之和。
具体地，如表1以及图9、图10、图11、图12和图13所示，以第一齿106的数量为6个，并且第一齿106的端部设置有两个副齿为例，第一齿106的外壁具有6个第一定子槽128和6个第一副定子槽132，此时第一定子102的外壁的第一凹槽130的总数量为12个，此时，第二定子108的内壁同样设置有12个第二凹槽134，而第二齿112的端部未设置有副齿，因此，第二定子108内壁的第二凹槽134数量即为第二齿112的数量，为12个。此时，第一定子槽128的槽中心线L1到第二齿112的齿身中心线L2之间的夹角α为0度到6度，具体可以取4度。其中，在转子组件202的转动方向上，L1位于L2的前方时，α的角度为负值，L1位于L2的后方时，α的角度为正值。
具体地，在图9中，横坐标为第一定子槽128的槽中心线L1到第二齿112的齿身中心线L2之间的夹角α的角度值，纵坐标为电机的效率值。图10中，横坐标为第一定子槽128的槽中心线L1到第二齿112的齿身中心线L2之间的夹角α的角度值，L3为电机的平均转矩变化曲线，L4为电机的铁损耗变化曲线。在图11、图12和图13中，第一定子102和第二定子108中线条的密度表示第一定子102和第二定子108中的负载磁密情况，也即反映了电机的铁损耗情况，线条密度越大，表示铁损耗越大，相反，线条密度越小，表示铁损耗越小。可以看出的是，当夹角α的值为4度时，电机的铁损耗明显低于夹角α的值为-4度和0度时的铁损耗，并且电机的输出和输入功率、转矩以及效率均高于夹角α的值为-4度和0度时，由此可见，通过调整α角度值的限定， 可以显著降低电机运行过程中的铁损耗以及铜损耗，并显著提高电机的输入功率，输出功率以及转矩。
表1.槽中心线L1到齿身中心线L2之间的夹角α对电机性能的影响
方案 α为-4° α为0° α为+4°
铜耗(W) 4.4 4.4 4.4
铁耗(W) 4.95 4.14 2.84
转矩(Nm) 0.36 0.41 0.37
输出功率(W) 37.81 43.15 39.18
输入功率(W) 47.2 51.7 46.4
效率 80.14％ 83.44％ 84.37％
也就是说，第一定子槽128的槽中心线L1到第二齿112的齿身中心线L2之间的夹角α的大小，可以根据第一定子102的定子齿的数量以及副齿的数量来确定，以保证电机运行过程中减小电机的损耗，提高电机运行的效率的效果达到最佳。
本申请提供的定子组件100，通过径向设置第一定子102和第二定子108，组成电机的径向双定子结构，从而可以将电机的转子组件202设置于第一定子102和第二定子108之间，从而有效地提高电机运行过程中的功率密度，增强电机的功率分配性能，还能够有效地减小电机的径向体积，有利于电机的小型化设计。进一步地，通过第一定子102和第二定子108之间角度的限定，可以在电机运行过程中有效地改善第一定子102和第二定子108以及转子组件202中的磁密，进而有效地减小电机的损耗，提高电机运行的效率。
在上述实施例中，进一步地，如图3所示，第一齿106可以包括第一齿身114和第一齿靴116：其中，第一齿身114的一端与第一轭部104相连接；第一齿靴116与第一齿身114的另一端相连接，第一齿靴116远离第一齿身114的一端设置有至少两个第一副齿118，相邻两个第一副齿118之间包括第一副定子槽132，其中，第一凹槽130还包括第一副定子槽132。
在该实施例中，通过第一定子102和第二定子108的设置，可以有效地提 高电机运行过程中的功率密度，增强电机的功率分配性能，并且还能够显著提高电机运行过程中的转矩密度，进而显著提高电机的转矩，保证了电机对于高转速和高转矩的运行需求。相比于相关技术中的电机，双定子电机在保证电机性能的同时，还能够有效地减小电机的径向体积，有利于电机的小型化设计。在此基础上，通过在第一齿106的端部设置第一副齿118，从而降低电机的齿槽转矩和转矩波动，进而提高电机的性能。
具体地，第一齿106具体包括第一齿身114和第一齿靴116，其中，第一齿身114的一端与第一轭部104相连接，第一齿靴116设置于第一齿身114的另一端，进一步地，第一齿靴116远离第一齿身114的一端设置有至少两个第一副齿118，相邻两个第一副齿118之间包括第一副定子槽132。通过至少两个第一副齿118的设置，一方面，至少两个第一副齿118可以作为导磁部件进行导磁，一方面，第一副齿118还可作为调制部件，实现磁场调制的作用。使得气隙磁导中引入较多的谐波分量，这样，使得电机的性能得到了明显的提升。
进一步地，由于第一齿106的端部设置有至少两个第一副齿118，因此，第一定子102外壁上的第一凹槽130既包括相邻第一齿106之间的第一定子槽128，还包括相邻第一副齿118之间的第一副定子槽132，也即，此时第一定子102外壁上的第一凹槽130的数量为第一定子槽128的数量与第一副定子槽132的数量之和。
具体地，第一齿身114与第一齿靴116之间可以设置为可拆卸式连接，同时，第一齿身114与第一轭部104之间也可以设置为可拆卸式连接，也即，第一齿身114与第一轭部104和第一齿靴116之间可以设置为可分离的套设组装结构。通过第一齿身114、第一齿靴116以及第一轭部104之间的可分离套设组装结构的设置，再进行定子组件100的组装过程中，可以先在第一齿身114上绕制绕组124，然后在将第一齿身114的一端与第一轭部104相连接，最后将第一齿靴116安装至第一齿身114的另一端。从而实现了定子组件100组装过程中的简化绕线工艺，降低绕线的难度，提高绕组124的槽满率，从提升电机输出性能，同时能够减少废料，减少物料的浪费。
具体地，第一齿身114与第一轭部104之间可以通过凹凸结构进行连接， 也即，在第一齿身114的一端设置凹槽或者凸起，相应地，在第一轭部104的相应位置上设置于凹槽或凸起相配合的凸起或凹槽，从而可以通过凹槽和凸起的配合实现第一齿身114与第一轭部104之间的连接。
相应地，第一齿身114与第一齿靴116之间同样可以通过凹凸结构进行连接，也即在第一齿靴116和第一齿身114之间通过相互配合的凸起和凹槽进行连接，以实现绕线工艺的简化。
进一步地，第二齿112的数量等于第一凹槽130的数量。
具体地，第二定子108的第二齿112的端部可以设置有副齿，也可以不设置副齿，具体地，基于第二齿112的端部未设置有副齿的情况下，通过限定第二齿112的数量与第一定子102外壁上的第一凹槽130的数量相等，以保证第二定子108的内壁上的第二凹槽134的数量与第一定子102外壁上的第一凹槽130的数量相等，进而保证电机运行过程中磁场的分布，进而保证电机稳定运行。
在上述任一实施例中，进一步地，如图4所示，第二齿112可以包括第二齿身120和第二齿靴122，其中，第二齿身120的一端与第二定子108轭部相连接；第二齿靴122与第二齿身120的另一端相连接，第二齿靴122远离第二齿身120的一端设置有至少两个第二副齿126，相邻两个第二副齿126之间包括第二副定子槽136，其中，第二齿112的数量与第二副定子槽136的数量之和等于第一凹槽130的数量。
在该实施例中，通过双定子的设置，可以有效地提高电机运行过程中的功率密度，增强电机的功率分配性能，并且还能够显著提高电机运行过程中的转矩密度，进而显著提高电机的转矩，保证了电机对于高转速和高转矩的运行需求。相比于相关技术中的电机，双定子电机在保证电机性能的同时，还能够有效地减小电机的径向体积，有利于电机的小型化设计。在此基础上，通过在第二齿112的端部设置第二副齿126，从而降低电机的齿槽转矩和转矩波动，进而提高电机的性能。
具体地，第二齿112具体包括第二齿身120和第二齿靴122，其中，第二齿身120的一端与第二轭部110相连接，第二齿靴122设置于第二齿身120的另一端，进一步地，第二齿靴122远离第二齿身120的一端设置有至少两个 第二副齿126，相邻两个第二副齿126之间包括第二副定子槽136。通过至少两个第二副齿126的设置，一方面，至少两个第二副齿126可以作为导磁部件进行导磁，一方面，至少两个第二副齿126还可作为调制部件，实现磁场调制的作用。使得气隙磁导中引入较多的谐波分量，这样，使得电机的性能得到了明显的提升。
基于第二齿112的端部设置有至少两个第二副齿126的情况下，相邻两个第二齿112之间包括第二定子槽138，同一个第二齿靴122上的相邻两个第二副齿126之间形成第二副定子槽136，第二凹槽134既包括第二定子槽138还包括第二副定子槽136，通过限定第二齿112的数量与第二副定子槽136的数量之和等于第一定子102外壁上第一凹槽130的数量，以保证第二定子108的内壁上的第二凹槽134的数量与第一定子102外壁上的第一凹槽130的数量相等，进而保证电机运行过程中磁场的分布，进而保证电机稳定运行。
具体地，第二齿身120与第二齿靴122之间可以设置为可拆卸式连接，同时，第二齿身120与第二轭部110之间也可以设置为可拆卸式连接，也即，第二齿身120与第二轭部110和第二齿靴122之间可以设置为可分离的套设组装结构。通过第二齿身120、第二齿靴122以及第二轭部110之间的可分离套设组装结构的设置，再进行定子组件100的组装过程中，可以先在第二齿身120上绕制绕组124，然后在将第二齿身120的一端与第二轭部110相连接，最后将第二齿靴122安装至第二齿身120的另一端。从而实现了定子组件100组装过程中的简化绕线工艺，降低绕线的难度，提高绕组124的槽满率，从定子制备的角度提升电机输出性能，同时能够减少废料，减少物料的浪费。
具体地，第二齿身120与第二轭部110之间可以通过凹凸结构进行连接，也即，在第二齿身120的一端设置凹槽或者凸起，相应地，在第二轭部110的相应位置上设置于凹槽或凸起相配合的凸起或凹槽，从而可以通过凹槽和凸起的配合实现第二齿身120与第二轭部110之间的连接。
相应地，第二齿身120与第二齿靴122之间同样可以通过凹凸结构进行连接，也即在第二齿靴122和第二齿身120之间通过相互配合的凸起和凹槽进行连接，以实现绕线工艺的简化。
在上述任一实施例中，进一步地，如图5、图6、图7和图8所示，定 子组件100还包括绕组124，绕组124设置于第一定子102和第二定子108中的至少一个上。
在该实施例中，通过绕组124的设置，可以实现定子组件100与转子组件202上的磁性部件进行配合运行，以保证电机转矩和转速的稳定输出，保证电机运行效率。
具体地，绕组124可以设置于第一定子102或第二定子108的其中一个上，以实现电机对于不同磁场分布的要求，进而实现电机的不同转矩输出。并且，仅在第一定子102和第二定子108的其中一个上设置绕组124，在保证电机运行效率的基础上，还能够节省绕组124材料，有效地减少电机的制造成本，同样也能简化制造结构。
进一步地，绕组124还可以同时设置于第一定子102和第二定子108上，以实现提高电机的磁密，进一步提高电机的转矩输出。
进一步地，绕组124设置于第一轭部104和/或第二轭部110上。
具体地，绕组124可以设置于第一定子102的第一轭部104上或者设置于第二定子108的第二轭部110上，从而进一步改善定子组件100与转子组件202之间的气隙中的磁场波形，进而使得转子组件202的永磁体在气隙中所形成的磁场更加接近正弦形，以进一步降低电机的齿槽转矩和转矩波动，进而提高电机运行过程中的稳定性。
进一步地，根据电机的具体运行参数和运行环境，绕组124可以单独设置于第一定子102的第一轭部104上，或单独设置于第二定子108的第二轭部110上，也可以同时设置于第一轭部104和第二轭部110上，以保证电机的运行效果。
在上述任一实施例中，进一步地，如图1至图5所示，每个第一齿106上设置有一个绕组124；和/或每个第二齿112上设置有一个绕组124。
在该实施例中，在第一定子102上设置有绕组124时，每个绕组124可以设置于一个第一齿106上，相应地，在第二定子108上设置有绕组124时，每个绕组124可以设置于一个第二齿112上。也就是说，以集中绕组的方式进行绕组124的设置，从而在电机运行过程中，能够在保证气隙磁场具有足够的正弦性的基础上，可以简化绕组124缠绕工艺，进而降低电机的制造难度，降低 制造成本。
具体地，可以先在第一齿身114或第二齿身120上绕制绕组124，然后在将第一齿身114或第二齿身120的一端与第一轭部104或第二轭部110相连接，最后将第一齿靴116或第二齿靴122安装至第一齿身114或第二齿身120的另一端。从而实现了定子组件100组装过程中的简化绕线工艺，降低绕线的难度，提高绕组124的槽满率，从定子制备的角度提升电机输出性能，同时能够减少废料，减少物料的浪费。
进一步地，每相邻两个第一齿106上设置有一个绕组124；和/或每相邻两个第二齿112上设置有一个绕组124。
具体地，在第一定子102上设置有绕组124时，每个绕组124可以同时绕设于两个第一齿106上，相应地，在第二定子108上设置有绕组124时，每个绕组124也可以同时绕设于两个第二齿112上，也就是说，以分布式绕组的方式进行绕组124的设置。通过分布式绕组的方式，可有效地提升定子组件100与转子组件202之间的气隙磁场的正弦性，从而进一步降低电机的齿槽转矩和转矩波动，进而提升电机运行过程中的稳定性。
进一步地，绕组124还可以设置为同心式绕组，具体地，将绕组124的线圈设置为回字形，也即将线圈设置为多层同心设置的线圈，每一层线圈缠绕不同数量的定子齿。
进一步地，每相邻两个第一齿106或每相邻两个第二齿112上均设置有一个绕组124，也可以在每相邻两个第一齿106上设置一个绕组124，同时在每相邻两个第二齿112上设置一个绕组124。
根据本申请的第二方面，如图1至图8所示，提出了一种电机200，包括：转子组件202；如上述实施例中任一项的定子组件100，定子组件100的至少一部分位于转子组件202内。
本申请提供的电机200，定子组件100的至少一部分位于转子组件202内，具体地，定子组件100与转子组件202同心设置，以保证转子组件202能够相对于定子组件100转动，以实现电机200的动力输出。其中，定子组件100的一部分位于转子组件202内，也可将定子组件100轴向上的整体设置于转子组件202内，以实现转子组件202的永磁体与定子组件100的绕组124之间的 不同配合方式。
进一步地，通过定子组件100的第一定子102和第二定子108的设置，可以有效地提高电机200运行过程中的功率密度，增强电机200的功率分配性能，并且还能够显著提高电机200运行过程中的转矩密度，进而显著提高电机200的转矩，保证了电机200对于高转速和高转矩的运行需求。相比于相关技术中的电机，双定子电机在保证电机200性能的同时，还能够有效地减小电机200的径向体积，有利于电机200的小型化设计。
在上述任一实施例中，进一步地，如图1至图8所示，所示，转子组件202包括多个永磁体204和多个隔磁部206，多个永磁体204和多个隔磁部206交替排布。
在该实施例中，转子组件202可以包括永磁体204和隔磁部206，并且，永磁体204的数量和隔磁部206的数量相同。进一步地，在转子组件202的周向上，多个永磁体204和多个隔磁部206交替排布并形成环形，从而使得转子组件202能够与第一定子102和第二定子108同心设置，进一步地，转子组件202的直径可以设置为大于第一定子102的直径并小于第二定子108的直径，进而保证转子组件202能够套设于第一定子102和第二定子108之间。
通过多个永磁体204和多个隔磁部206交替排布，可以永磁体204的磁场能够有效地在定子和转子之间形成磁场回路，进而保证绕组124与永磁体204的磁场之间能够进行有效地配合，以保证电机200的运行效果。
进一步地，相邻两个永磁体204的极性相反。
具体地，通过将相邻两个永磁体204的极性设置为相反，可以使得相邻两个永磁体204至今形成有效地聚磁效应，从而进一步提高电机200中定子组件100和转子组件202之间的气隙磁密，进而能够有效地提高电机200转矩，并减小转矩波动，提高电机200稳定性。
进一步地，如图4和图5所示，永磁体204可以采用轮辐型磁铁排布方式或V字形磁铁排布方式进行设置。
在上述任一实施例中，进一步地，隔磁部206包括导磁部件和/或非导磁部件。
在该实施例中，相邻永磁体204之间的隔磁部206可以设置为导磁部件， 具体地，转子组件202可以包括环形铁芯，在环形铁芯上间隔设置用于安装永磁体204的安装槽，同时在安装槽之间利用铁芯的本体形成磁桥，该磁桥即为隔磁部206，从而实现对相邻永磁体204进行间隔。通过以上设置方式，可以利用环形铁芯的本体结构，简化转子组件202的加工工艺，降低加工难度，从而降低电机200的制造成本。
进一步地，隔磁部206还可以包括非导磁部件，从而可以有效地避免转子组件202发生漏磁，进而提高电机200运行过程中的磁密，保证电机200的运行效果。
进一步地，永磁体204包铁氧体或稀土永磁体。
具体地，铁氧体或稀土永磁体具有良好的磁能，通过采用铁氧体或稀土永磁体作为转子组件202的永磁体204，能够保证永磁体204能够长期有效地提供磁能，进而保证电机200长期稳定的运行。
在上述任一实施例中，进一步地，定子组件100的绕组124的极对数满足以下关系式：Pa＝∣Ns±Zr/2∣；其中，Pa为定子组件100的绕组124的极对数，Ns为第一凹槽130的总数量，Zr为隔磁部206的数量。
在该实施例中，通过定子绕组124极对数的限定，保证了电机200的正常运行，并且，还能够使气隙磁密中出现的新的谐波成分可作为电机200的工作谐波，为电机200提供输出转矩，从而有效提升了电机200的转矩密度。具体地，定子组件100的绕组124的极对数满足以下关系式：Pa＝∣Ns±Zr/2∣；其中，Pa为定子组件100的绕组124的极对数，Ns为第一凹槽130的总数量，Zr为隔磁部206的数量。
具体地，基于第一齿106的端部设置有至少两个第一副齿118，因此，第一定子102外壁上的第一凹槽130既包括相邻第一齿106之间的第一定子槽128，还包括相邻第一副齿118之间的第一副定子槽132，也即，此时第一定子102外壁上的第一凹槽130的数量为第一定子槽128的数量与第一副定子槽132的数量之和。基于第一齿106的端部未设置有副齿时，第一凹槽130即为相邻两个第一齿106之间的第一定子槽128，此时，第一凹槽130的数量即为第一定子槽128的数量。
根据本申请的第三方面，提出了一种电器设备，包括上述实施例中任一项 的电机200。
本申请提供的电器设备，包括上述实施例中任一项的电机200，因此，通过将电机200的定子组件100设置为第一定子102和第二定子108的双定子结构，并且将电机200的转子组件202设置于第一定子102和第二定子108之间，在保证了电器设备运行过程的效率的同时，还能够有效地减小电器设备的体积，有利于电器设备的小型化设计。
在本申请的描述中，术语“多个”则指两个或两个以上，除非另有明确的限定，术语“上”、“下”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申请和简化描述，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申请的限制；术语“连接”、“安装”、“固定”等均应做广义理解，例如，“连接”可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是直接相连，也可以通过中间媒介间接相连。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申请中的具体含义。
在本说明书的描述中，术语“一个实施例”、“一些实施例”、“具体实施例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或特点包含于本申请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一定指的是相同的实施例或实例。而且，描述的具体特征、结构、材料或特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
以上仅为本申请的优选实施例而已，并不用于限制本申请，对于本领域的技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (15)

  1. 一种定子组件，其中，包括：
    第一定子，所述第一定子包括第一轭部和至少两个第一齿，所述至少两个第一齿设置所述第一轭部的外壁，相邻两个所述第一齿之间形成第一定子槽，所述第一定子的外壁包括多个第一凹槽，所述多个第一凹槽至少包括所述第一定子槽；
    第二定子，所述第二定子包括第二轭部和至少两个第二齿，所述第二轭部与所述第一轭部同轴设置且套设于所述第一轭部外，所述至少两个第二齿设置于所述第二轭部的内壁，所述第一定子和所述第二定子之间用于放置转子组件；
    所述第一定子槽在所述第一定子的径向方向上具有槽中心线，所述第二齿在所述第二定子的径向方向具有齿身中心线，沿所述转子组件的转动方向上，所述槽中心线到所述齿身中心线之间的角度大于或等于0度且小于或等于72/Ns度，其中，Ns为所述第一凹槽的数量。
  2. 根据权利要求1所述的定子组件，其中，所述第一齿包括：
    第一齿身，所述第一齿身的一端与所述第一轭部相连接；
    第一齿靴，所述第一齿靴与所述第一齿身的另一端相连接，所述第一齿靴远离所述第一齿身的一端设置有至少两个第一副齿，同一所述第一齿靴上相邻两个所述第一副齿之间包括第一副定子槽，
    其中，所述第一凹槽还包括所述第一副定子槽。
  3. 根据权利要求1所述的定子组件，其中，
    所述第二齿的数量等于所述第一凹槽的数量。
  4. 根据权利要求1所述的定子组件，其中，所述第二齿包括：
    第二齿身，所述第二齿身的一端与所述第二轭部相连接；
    第二齿靴，所述第二齿靴与所述第二齿身的另一端相连接，所述第二齿靴远离所述第二齿身的一端设置有至少两个第二副齿，同一所述第二齿靴上相邻两个所述第二副齿之间包括第二副定子槽，
    其中，所述第二齿的数量与所述第二副定子槽的数量之和等于所述第一凹 槽的数量。
  5. 根据权利要求1至4中任一项所述的定子组件，其中，还包括：
    绕组，所述绕组设置于所述第一定子和所述第二定子中的至少一个上。
  6. 根据权利要求5所述的定子组件，其中，
    所述绕组设置于所述第一轭部和/或所述第二轭部上。
  7. 根据权利要求5所述的定子组件，其中，
    每个所述第一齿上设置有一个所述绕组；和/或
    每个所述第二齿上设置有一个所述绕组。
  8. 根据权利要求5所述的定子组件，其中，
    每相邻两个所述第一齿上设置有一个所述绕组；和/或
    每相邻两个所述第二齿上设置有一个所述绕组。
  9. 一种电机，其中，包括：
    转子组件；
    如权利要求1至8中任一项所述的定子组件，所述转子组件的至少一部分位于所述第一定子和所述第二定子之间。
  10. 根据权利要求9所述的电机，其中，
    所述转子组件包括多个永磁体和多个隔磁部，多个所述永磁体和多个所述隔磁部交替排布。
  11. 根据权利要求10所述的电机，其中，
    相邻两个所述永磁体的极性相反。
  12. 根据权利要求10所述的电机，其中，
    所述隔磁部包括导磁部件和/或非导磁部件。
  13. 根据权利要求10所述的电机，其中，
    所述永磁体包铁氧体或稀土永磁体。
  14. 根据权利要求10所述的电机，其中，
    所述定子组件的绕组的极对数满足以下关系式：Pa＝∣Ns±Zr/2∣；
    其中，Pa为所述定子组件的绕组的极对数，Ns为所述第一定子的第一凹槽的总数量，Zr为所述隔磁部的数量。
  15. 一种电器设备，其中，包括：
    如权利要求9至14中任一项所述的电机。
PCT/CN2022/077748 2021-12-17 2022-02-24 定子组件、电机和电器设备 WO2023108893A1 (zh)

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