WO2019114250A1 - 电机定子和具有其的电机 - Google Patents

电机定子和具有其的电机 Download PDF

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Publication number
WO2019114250A1
WO2019114250A1 PCT/CN2018/093151 CN2018093151W WO2019114250A1 WO 2019114250 A1 WO2019114250 A1 WO 2019114250A1 CN 2018093151 W CN2018093151 W CN 2018093151W WO 2019114250 A1 WO2019114250 A1 WO 2019114250A1
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WO
WIPO (PCT)
Prior art keywords
stator
sub
motor
cores
outer end
Prior art date
Application number
PCT/CN2018/093151
Other languages
English (en)
French (fr)
Chinese (zh)
Inventor
陈金涛
诸自强
冯国平
吴迪
武谷雨
Original Assignee
广东威灵电机制造有限公司
美的威灵电机技术（上海）有限公司
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 CN201721738332.5U external-priority patent/CN207518366U/zh
Priority claimed from CN201711311252.6A external-priority patent/CN107994691A/zh
Application filed by 广东威灵电机制造有限公司, 美的威灵电机技术（上海）有限公司 filed Critical 广东威灵电机制造有限公司
Priority to KR1020197029870A priority Critical patent/KR20190126384A/ko
Priority to JP2019569450A priority patent/JP6888126B2/ja
Publication of WO2019114250A1 publication Critical patent/WO2019114250A1/zh

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/14—Stator cores with salient poles
    • H02K1/146—Stator cores with salient poles consisting of a generally annular yoke 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
    • H02K1/14—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
    • H02K1/22—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
    • H02K1/2726—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of a single magnet or two or more axially juxtaposed single magnets
    • H02K1/2733—Annular magnets

Definitions

  • the present application relates to the field of motor manufacturing technology, and in particular to a motor stator and a motor therewith.
  • the stator core of the motor mostly adopts an integral structure, which makes it inconvenient to wind on the stator yoke portion, resulting in inconvenient machining of the motor stator and low processing efficiency.
  • the stator yoke, the stator tooth portion and the stator winding are respectively modularized in the production of the motor stator, and these modules are assembled into a complete motor stator.
  • the assembling operation between the plurality of modules of the stator yoke is difficult, and usually needs to be completed by other tools, thereby limiting the production efficiency of the motor stator.
  • the present application is intended to address at least one of the technical problems existing in the prior art. To this end, the present application proposes a motor stator that is easy to manufacture, assembly, and has high production efficiency.
  • the present application also proposes a motor having the above-described motor stator.
  • a motor stator comprising: a stator core including a plurality of sub-stator cores sequentially connected in a circumferential direction, each of the sub-stator cores including a stator yoke portion, two a stator tooth portion and two splicing outer ends, wherein the two sub-stator tooth portions are respectively disposed inside the stator yoke portion and respectively located at two circumferential ends of the stator yoke portion, and the two of the splicing portions are externally The ends are respectively disposed on the outer side of the stator yoke portion and respectively opposite to the two sub-stator tooth portions, and each of the splice outer end portions is provided with a connecting protrusion or a connecting groove, and two adjacent Splicing is achieved between the sub-stator cores by the cooperation of the connecting protrusions and the connecting grooves, and two of the sub-stator teeth of the contact of the two adjacent sub-st
  • the stator core is disposed to include a plurality of sub-stator cores sequentially connected in the circumferential direction, and each of the sub-stator cores includes a stator yoke portion, at least one stator tooth portion, and at least one outer end a portion, two sub-stator tooth portions and two splice outer end portions, and at the same time, the two sub-stator tooth portions are respectively disposed at inner sides of the stator yoke portion and respectively located at circumferential ends of the stator yoke portion, and the two splice outer end portions are respectively disposed at The outer side of the stator yoke portion is opposite to the two sub-stator tooth portions, and each of the splice outer end portions is provided with a connecting protrusion and a connecting groove, so that the adjacent two sub-stator cores pass through the connecting protrusion and the connecting groove.
  • the splicing is realized, so that the assembly of the stator core can be completed without using other tools, the assembly difficulty of the stator core is reduced, the production efficiency of the stator core is improved, and the structure of each sub-stator core is short and convenient.
  • the punching of the stator core saves the amount of material used in the stator core.
  • the sub-stator cores are two, each of the splice outer ends is formed with a groove, and two of the two splice outer ends of the adjacent two sub-stator cores are in contact
  • the grooves form a mounting hole, and the mounting hole is fitted with a connecting member to realize the connection of the adjacent two sub-stator cores.
  • each of the sub-stator cores further includes: at least one stator tooth portion, the stator tooth portion is disposed inside the stator yoke portion and located at two of the sub-stator tooth portions At least one outer end portion disposed outside the stator yoke portion and opposed to the stator tooth portion.
  • the stator teeth are plural, and the plurality of stator teeth are spaced apart.
  • each of the splice outer ends is formed by a corresponding radially outward extension of the sub stator teeth along the stator yoke, each of the outer ends being corresponding to The stator teeth are formed to extend outward in the radial direction of the stator yoke.
  • the outer end portion is formed with a positioning mounting hole; when the sub-stator core includes a plurality of the outer ends At least one of the plurality of outer end portions is formed with a positioning mounting hole.
  • the connecting protrusions between two adjacent sub-stator cores are passed between The splicing is achieved by cooperation with the connecting groove.
  • the length of the outer end portion is equal or unequal to the length of the splice outer end portion, the length of the stator tooth portion.
  • the widths of the sub-stator teeth of the plurality of sub-stator cores are all the same.
  • one of the two splice outer ends of each of the sub-stator cores is provided with the connecting protrusion, and the other of the two splice outer ends
  • the connecting groove is provided on the upper side.
  • the stator windings are at least two, and each of the stator windings is wound on the stator yoke in a single or multiple winding manner, and the stator windings are connected by a star. Shape or triangle.
  • each of the sub-stator cores is formed by stacking a plurality of punches.
  • a motor according to an embodiment of the second aspect of the present invention comprising: a motor stator, wherein the motor stator is a motor stator according to the first aspect of the present application; a motor rotor, the motor rotor being disposed inside the motor stator.
  • the assembly of the motor is facilitated, and the production efficiency of the motor is improved.
  • the motor rotor is a two-pole permanent magnet magnetic ring
  • the two-pole permanent magnet magnetic ring is an integral magnetic ring or a spliced magnetic ring.
  • the motor is a single phase motor, a three phase motor, or a multiphase motor.
  • FIG. 1 is a schematic view of a stator core of a stator of a motor according to an embodiment of the present application
  • Figure 2 is a schematic view of the sub-stator core shown in Figure 1;
  • Figure 3 is an enlarged view of a portion A circled in Figure 2;
  • FIG. 4 is a partial schematic view of a motor in accordance with an embodiment of the present application.
  • FIG. 5 is a partial schematic view of a motor in accordance with another embodiment of the present application.
  • Motor 200 motor stator 100, motor rotor 101,
  • Stator core 1 sub-stator core 11, stator yoke 111, stator tooth portion 112,
  • connection In the description of the present application, it should be noted that the terms “installation”, “connected”, and “connected” are to be understood broadly, and may be fixed or detachable, for example, unless otherwise specifically defined and defined. Connected, or integrally connected; can be mechanical or electrical; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of the two components.
  • Connected, or integrally connected can be mechanical or electrical; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of the two components.
  • the specific meanings of the above terms in the present application can be understood in the specific circumstances for those skilled in the art.
  • a motor stator 100 according to an embodiment of the first aspect of the present application will now be described with reference to Figs.
  • a motor stator 100 includes a stator core 1 and a stator winding 2.
  • the stator core 1 includes a plurality of sub-stator cores 11 sequentially connected in the circumferential direction, each of the sub-stator cores 11 including a stator yoke portion 111, two sub-stator tooth portions 114, and two splice outer end portions 115, and two sub-stator teeth portions 114 are disposed on the inner side of the stator yoke portion 111 and the two sub-stator tooth portions 114 are respectively located at two circumferential ends of the stator yoke portion 111, and the two splice outer end portions 115 are respectively disposed outside the stator yoke portion 111 and two spliced portions.
  • the end portions 115 are respectively opposite to the two sub-stator tooth portions 114.
  • Each of the splice outer end portions 115 is provided with a connecting protrusion 115a or a connecting groove 115b.
  • the adjacent two sub-stator cores 11 are connected by a connecting protrusion 115a and connected.
  • the fitting of the grooves 115b achieves splicing, and the two sub-stator teeth 114 of the contact of the adjacent two sub-stator cores 11 constitute a complete stator tooth, and the stator winding 2 is wound around the stator yoke portion 111.
  • the stator core 1 includes two sub-stator cores 11 which are sequentially connected end to end in the circumferential direction thereof, and each of the sub-stator cores 11 includes a stator yoke portion 111, two sub-stator tooth portions 114, and The two splice outer ends 115, the stator yoke portion 111 may be formed substantially in a circular arc shape, the two sub-stator tooth portions 114 are both disposed inside the stator yoke portion 111 and the two sub-stator tooth portions 114 are respectively located at the circumference of the stator yoke portion 111.
  • the two splice outer ends 115 are disposed on the outer side of the stator yoke portion 111 and the two splice outer end portions 115 may be respectively disposed opposite to the two sub-stator tooth portions 114, and the two splice outer end portions 115 are disposed.
  • One of the connecting protrusions 115a is provided, and the other of the two splice outer ends 115 is provided with a connecting groove 115b that cooperates with the connecting protrusion 115a, and the connecting protrusion 115a is correspondingly fitted to the connecting groove 115b.
  • the adjacent two sub-stator tooth portions 114 can be assembled into one complete stator tooth, thereby completing the assembly between the adjacent sub-stator iron cores 11.
  • the structure of the stator teeth may be the same as the structure of the stator teeth 112.
  • the direction “inner” means a direction close to the central axis of the stator core 1, and the opposite direction is defined as “outer”.
  • stator core 1 may further include three or more sub-stator cores 11 , that is, three or more sub-stator cores 11 are connected end to end in the circumferential direction of the stator core 1 .
  • Each of the sub-stator cores 11 includes a stator yoke portion 111, two sub-stator tooth portions 114, and two splice outer end portions 115.
  • the two sub-stator tooth portions 114 are both disposed inside the stator yoke portion 111 and the two sub-stator tooth portions 114 are respectively Located at both circumferential ends of the stator yoke portion 111, two splice outer end portions 115 are respectively disposed outside the stator yoke portion 111 and two splice outer end portions 115 are respectively opposed to the two sub-stator tooth portions 114, each of which is spliced to the outer end.
  • the connecting portion 115 is provided with a connecting protrusion 115a or a connecting groove 115b for splicing between the adjacent two sub-stator cores 11 through the cooperation of the connecting protrusion 115a and the connecting groove 115b to complete the assembly of the stator core.
  • the structures of the plurality of sub-stator cores 11 of the stator core 1 may be the same or different.
  • the central angles of the stator yokes 111 of the two sub-stator cores 11 may each be 180°, or the central angles of the stator yokes 111 of the two sub-stator cores 11 may be 120° and 240°, respectively; for example,
  • the stator core 1 includes three sub-stator cores 11 which are sequentially connected end to end in the circumferential direction thereof, and the central yoke angles of the stator yoke portions 111 of the three sub-stator cores 11 are both 120°, each sub-stator iron core 11
  • the two splice outer ends 115 are respectively provided with connecting protrusions 115a and connecting grooves 115b, or two splice outer ends 115 of one of the three sub
  • the two splice outer ends 115 of the other of the three sub-stator cores 11 are provided with connecting grooves 115b, and the two splice outer ends 115 of the other of the three sub-stator cores 11 respectively A connecting protrusion 115a and a connecting groove 115b are provided; the sub-stator tooth portion 114
  • the number of the ends may be equal to the number of the splice outer ends 115.
  • the stator core 1 is disposed to include a plurality of sub-stator cores 11 sequentially connected in the circumferential direction, and each of the sub-stator cores 11 includes a stator yoke portion 111 and two sub-stator teeth portions.
  • each of the splice outer end portions 115 is provided with a connecting protrusion 115a and a connecting groove 115b, so that the adjacent two sub-stator cores 11 are connected by a convex joint.
  • the cooperation of the 115a and the connecting groove 115b realizes splicing, so that the assembling of the stator core 1 can be completed without using other tools, the assembly difficulty of the stator core 1 is reduced, the production efficiency of the stator core is improved, and at the same time, each sub-stator
  • the structure of the iron core 11 is short, which facilitates the punching of the sub-stator iron core 11, and at the same time saves the amount of material used for the sub-stator iron core 11.
  • the sub-stator cores 11 are two, and each of the splice outer ends 115 is formed with a groove (not shown), and two of the adjacent two sub-stator cores 11 are in contact.
  • the two grooves of the splicing outer end portion 115 constitute a mounting hole in which a connecting member (not shown) is fitted to realize the connection of the adjacent two sub-stator cores 11. That is, when the stator core 1 includes two sub-stator cores 11 which are connected end to end in the circumferential direction, each of the splice outer end portions 115 is provided not only with the connection protrusions 115a or the connection grooves 115b, but also for each splicing.
  • the outer end portion 115 is further formed with a groove, and the two sub-stator cores 11 are spliced by the cooperation of the connecting protrusion 115a and the connecting groove 115b, and the two grooves of the two sub-stator cores 11 constitute one
  • the mounting hole, through which the connecting member is inserted, can fix the stator core 1 to the casing (not shown) of the motor 200, thereby realizing the mounting of the stator core 1.
  • the splicing outer end portions 115 corresponding to the adjacent two sub-stator iron cores 11 may also be formed with grooves so that two adjacent sub-stator cores are formed.
  • the two grooves of the two splice outer ends 115 of the contact of 11 constitute a mounting hole, and the connecting member realizes the mounting of the stator core 1 through the mounting holes.
  • each of the sub-stator cores 11 further includes at least one stator tooth portion 112 and at least one outer end portion 113, the stator tooth portion 112 being disposed inside the stator yoke portion 111 and located at the two sub-stator teeth portions Between 114, the outer end portion 113 is provided outside the stator yoke portion 111 and opposed to the stator tooth portion 112.
  • each of the sub-stator cores 11 further includes two stator tooth portions 112 and two outer end portions 113, both of which are disposed inside the stator yoke portion 111 and Two stator tooth portions 112 are spaced apart between the two sub-stator tooth portions 114. Both outer end portions 113 are disposed outside the stator yoke portion 111 and the two outer end portions 113 are respectively opposite to the two stator tooth portions 112. .
  • each of the sub-stator cores 11 may include one stator tooth portion 112 and one outer end portion 113, the stator tooth portion 112 is spaced apart from the two sub-stator tooth portions 114 in the circumferential direction of the stator yoke portion 111; or each sub-portion
  • the stator core 11 includes three or more stator tooth portions 112 which are spaced apart from each other in the circumferential direction of the stator yoke portion 111.
  • the number of the stator teeth 112 may be greater than or equal to the number of the outer end portions 113.
  • the number of the outer end portions 113 may be 1/2, 1/3, 1 of the number of the stator teeth 112. /4, etc., without being limited to this.
  • each splice outer end 115 is formed by a corresponding sub-stator tooth portion 114 extending radially outward of the stator yoke portion 111
  • each The outer end portion 113 is formed by the corresponding stator tooth portion 112 extending outward in the radial direction of the stator yoke portion 111, that is, the splice outer end portion 115 and the sub-stator tooth portion 114 are in one-to-one correspondence with the radial direction of the stator yoke portion 111.
  • the outer end portion 113 and the stator tooth portion 112 are disposed in one-to-one correspondence with the radial direction of the stator yoke portion 111, so that the structure of the sub-stator iron core 11 is relatively regular, which facilitates the manufacture of the sub-stator iron core 11.
  • the width of the splice outer end portion 115 may be the same as the width of the sub stator tooth portion 114, and the width of the outer end portion 113 may be the same as the width of the stator tooth portion 112, thereby further making the structure of the sub stator core 11 regular and further convenient.
  • the manufacture of the sub-stator core 11 is carried out.
  • the width of the splice outer end portion 115 may also be different from the width of the sub-stator tooth portion 114, and the width of the outer end portion 113 may also be different from the width of the stator tooth portion 112, so that the stator core 1 has a variety, thereby The applicability of the stator core 1 is improved, and the applicable range of the stator core 1 is expanded.
  • width means a width in the circumferential direction of the stator yoke portion 111.
  • the length of the outer end portion 113 and the length of the splice outer end portion 115 and the length of the stator tooth portion 114 may be equal or unequal, that is, the length of the outer end portion 113 and the splice outer end portion 115.
  • the length and the length of the stator teeth 114 may be equal, or at least two, of unequal.
  • the sub-stator iron core 11 has a regular structure and is easy to manufacture; when the length of the outer end portion 113 and the outer end portion 115 are spliced
  • the length and the length of the stator tooth portion 114 are not equal, for example, the length of the stator tooth portion 114 is greater than the length of the outer end portion 113, and the length of the outer end portion 113 is greater than the length of the splice outer end portion 115 (as shown in FIGS. 1 and 2). Shown, the diversity of the stator core 1 is improved, and the applicable range of the stator core 1 is further expanded.
  • the length of the sub-stator tooth portion 114 may be the same as the length of the stator tooth portion 114.
  • length means a length in the radial direction of the stator yoke portion 111.
  • the sub-stator core 11 includes an outer end portion 113, and the outer end portion 113 is formed with a positioning mounting hole 113a, so that the stator core 1 has a plurality of positioning mounting holes 113a.
  • the stator core 1 When the stator core 1 is applied to the motor 200, the stator core 1 can be fixed to the casing of the motor 200 through a plurality of positioning mounting holes 113a, thereby realizing axial positioning and mounting fastening of the stator core 1, and at the same time
  • the stator core 11 is formed with a positioning mounting hole 113a, so that the sub-stator core 11 is separated from the casing of the motor 200 when the motor 200 is running at a high speed, and the casing between each sub-stator core 11 and the motor 200 is secured.
  • the connection is reliable.
  • the sub-stator core 11 includes a plurality of outer ends 113, and at least one of the plurality of outer ends 113 is formed with a positioning mounting hole 113a, that is, each sub-stator
  • the iron core 11 has at least one positioning mounting hole 113a thereon, so that the stator core 1 also has a plurality of positioning mounting holes 113a.
  • the stator core 1 can pass through a plurality of positioning mounting holes.
  • the 113a is fixed on the casing of the motor 200, and the axial positioning and mounting fastening of the stator core 1 are realized.
  • each of the sub-stator cores 11 is formed with a positioning mounting hole 113a, the motor 200 is prevented from running at a high speed.
  • the sub-stator core 11 is separated from the casing of the motor 200, and the connection between each sub-stator core 11 and the casing of the motor 200 is also ensured.
  • the positioning end hole 113a may not be disposed on the outer end portion 113.
  • the corresponding outer end portion 115 of the at least two sub-stator cores 11 is formed with a groove so that the contact of the adjacent two sub-stator cores 11 is
  • the two recesses of the two splice outer ends 115 form a mounting hole, and the connecting member also realizes the mounting of the stator core 1 through the mounting holes.
  • the length of the outer end portion 113 having the positioning mounting hole 113a is longer than the length of the splice outer end portion 115, thereby mounting the stator core 1 to the casing of the motor 200.
  • the interference between the outer end portion 115 and the casing of the motor 200 is prevented, and the installation of the stator core 1 cannot be completed, and the interval between the stator winding 2 on the stator yoke portion 111 and the casing of the motor 200 is large, avoiding The stator winding 2 is in contact with the casing of the motor 200 to damage the stator winding 2, thereby effectively protecting the stator winding 2 and ensuring the service life of the stator core.
  • the length of the outer end portion of the positioning mounting hole 113a may be less than or equal to the length of the outer end portion 115.
  • the housing of the motor 200 may be provided with a protrusion corresponding to the outer end portion, and the same may be The mounting of the stator core 1 is achieved.
  • the length of the outer end portion 113 having the positioning mounting hole 113a means the length of the outer end portion 113 having the positioning mounting hole 113a in the radial direction of the stator yoke portion 111
  • “splicing the outer end portion 115” means the length of the splice outer end portion 115 in the radial direction of the stator yoke portion 111.
  • the adjacent two sub-stator cores 11 pass between the connecting protrusions 115a and the connecting grooves 115b.
  • the sub-stator core 11 includes the stator yoke portion 111, one stator tooth portion 112, two sub-stator tooth portions 114, and two splice outer end portions 115, the stator windings 2 are respectively wound around the adjacent stator teeth portions.
  • stator winding 2 is wound between the 112 and the sub-stator tooth portion 114, and the stator winding 2 is also wound between the adjacent two stator tooth portions 112; when the stator stator core 11 is not provided with the stator tooth portion 112, the stator Winding 2 is wound between adjacent two sub-stator teeth 114. Thereby, the winding of the stator core 1 is facilitated, and the machining efficiency of the motor stator 100 is improved.
  • the sub-stator teeth 114 of the plurality of sub-stator cores 11 have the same width, and the sub-stator teeth 114 have the same length, that is, each sub-stator tooth 114 has the same structure. Since the sub-stator tooth portions 114 of the contact of the adjacent two sub-stator cores 11 constitute a complete stator tooth, the width of the sub-stator tooth portion 114 is half the width of the corresponding stator teeth, thereby facilitating to some extent. The processing of the sub-stator iron core 11 is simplified, and the processing efficiency of the sub-stator iron core 11 is improved.
  • the width of the sub-stator tooth portion 114 means the width of the sub-stator tooth portion 114 in the circumferential direction of the stator yoke portion 111.
  • the widths of the sub-stator teeth 114 contacting the two adjacent sub-stator cores 11 may be different, and only the sub-stator teeth 114 of the contact of the two adjacent sub-stator cores 11 may constitute a complete stator.
  • the tooth can be.
  • one of the two splice outer ends 115 of each sub-stator core 11 is provided with a connection protrusion 115a, and the other of the two splice outer ends 115 is provided with a connection.
  • the groove 115b therefore, also contributes to simplifying the processing of the sub-stator core 11 to a certain extent, and improving the processing efficiency of the sub-stator core 11.
  • the stator core 1 includes three sub-stator cores 11 which are sequentially connected end to end in the circumferential direction thereof, and the stator yoke portions 111 of the three sub-stator cores 11 may each have a central angle of 120°, and each sub-stator core 11 One of the two splice outer ends 115 is provided with a connection protrusion 115a, and the other is provided with a connection groove 115b, whereby the structure of each sub-stator core 11 can be identical, in the stator iron of the workpiece When the core 11 is used, a set of tooling can be used, which simplifies the processing process of the sub-stator core 11, improves the processing efficiency, and reduces the processing cost.
  • stator windings 2 there are at least two stator windings 2, each of which is wound on the stator yoke 111 in a single or multiple wire wound manner.
  • the winding directions of the plurality of stator windings 2 may be the same or opposite.
  • the winding direction of each of the stator windings 2 may be positive or reverse.
  • the stator windings 2 may be connected in series or in parallel so that the stator windings 2 may be connected in a star shape (or Y-shape), a triangle, or the like.
  • the winding manner, winding direction and connection manner of the stator winding 2 are generally known to those skilled in the art and are not specifically limited herein.
  • each of the sub-stator cores 11 is formed by stacking a plurality of punching sheets, thereby facilitating the processing of the sub-stator cores 11, thereby facilitating the processing of the stator core.
  • the outer contour of the connecting protrusion 115a is formed in an arc shape, and the central angle of the connecting protrusion 115a is ⁇ , ⁇ satisfies: ⁇ >180°, the shape of the connecting groove 115b and the connecting convexity
  • the shape of 115a is adapted.
  • the connecting protrusion 115a may be formed by a partial end surface of the corresponding sub-stator tooth portion 114 protruding along the circumferential direction of the stator yoke portion 111, and the connecting groove 115b may be composed of a corresponding sub-stator tooth portion.
  • a partial end surface of the projection 114 is recessed in the circumferential direction of the stator yoke portion 111, and an outer contour of the connection projection 115a is formed in a circular arc shape, and a central angle of the connection projection 115a is ⁇ >180°, so that the cross-sectional area of the connection projection 115a is self-contrast
  • the free end of the connecting projection 115a connected to the sub-stator tooth portion 114 along the axial direction of the stator yoke portion 111 toward the connecting projection 115a may first increase and decrease, and the shape of the connecting recess 115b and the connecting projection.
  • the shape of the 115a is adapted to fit the connecting protrusion 115a in the connecting groove 115b, so that the connecting protrusion 115a can be prevented from being detached from the connecting groove 115b, and the cooperation between the connecting protrusion 115a and the connecting groove 115b is ensured.
  • the strength ensures the connection strength of the adjacent two sub-stator cores 11 and facilitates the fitting of the connecting protrusions 115a in the connecting grooves 115b, thereby ensuring the assembling efficiency.
  • the connecting groove 115b can also be formed as a dovetail groove, and the connecting protrusion 115a can be matched with the above-mentioned dovetail groove, and at the same time, the assembling between the adjacent two sub-stator cores 11 can be realized, and the assembling strength can be ensured. But it is not limited to this.
  • the two splice outer ends 115 of the contact of two adjacent sub-stator cores 11 are bonded or welded to further ensure the relationship between the adjacent two sub-stator cores 11
  • the connection strength ensures the stability of the relative positions of the adjacent two sub-stator cores 11 while avoiding adhesion or welding between the two sub-stator teeth 114 of the contact of the adjacent two sub-stator cores 11 to affect the motor
  • the magnetic field of the stator 100 ensures the reliability of the use of the motor stator 100.
  • the motor 200 includes a motor stator 100 and a motor rotor 101, wherein the motor stator 100 is the motor stator 100 according to the above first embodiment of the present application, and the motor rotor 101 is disposed inside the motor stator 100.
  • the motor 200 can be a single-phase motor, a three-phase motor or a multi-phase motor, etc.
  • the motor 200 can be applied to household appliances, medical equipment, power generation and energy storage equipment, chemical detection and material wind equipment, and unmanned aerial vehicles.
  • the motor 200 can be applied to, but is not limited to, a fan, a vacuum cleaner, a blower, a hand dryer, a lathe, an electric drill, a centrifuge, a generator, a flywheel energy storage, a drone, or a model aircraft.
  • the motor 200 includes a motor stator 100 and a motor rotor 101.
  • the motor stator 100 is sleeved outside the motor rotor 101, and the motor stator 100 can be fixedly mounted on the casing of the motor 200 (not shown).
  • the motor stator 100 and the motor rotor 101 interact to rotate the motor rotor 101 about its central axis.
  • the motor stator 100 described above by employing the motor stator 100 described above, the assembly of the motor 200 is facilitated, and the production efficiency of the motor 200 is improved.
  • the motor rotor 101 is a two-pole permanent magnet magnetic ring, the two-pole permanent magnet magnetic ring is easy to prepare, and the two-pole permanent magnet magnetic ring has high strength and is easy to install.
  • the two-pole permanent magnet magnetic ring is a ring structure, and the two-pole permanent magnet magnetic ring can be an integral magnetic ring, that is, the two-pole permanent magnet magnetic ring is integrally formed into an integral structure, or the two-pole permanent magnetic ring is a spliced magnetic ring, that is, two poles forever.
  • the magnetic magnetic ring is formed by splicing two magnetic poles.
  • the motor stator 100 according to the embodiment of the first aspect of the present application will be described in detail below with reference to FIGS. 1-3 in a specific embodiment. It is to be understood that the following description is only illustrative and not restrictive.
  • the motor stator 100 includes a stator core 1 and six stator windings 2, and the stator core 1 includes two sub-stator cores 11 which are sequentially connected end to end in the circumferential direction thereof, and two sub-stator cores 11
  • the structure is the same and each sub-stator core 11 is formed by stacking a plurality of punches, each of the sub-stator cores 11 including a stator yoke portion 111, two stator tooth portions 112, two outer end portions 113, and two sub-stators
  • the tooth portion 114 and the two splice outer end portions 115, the two sub-stator tooth portions 112 contacting the two adjacent sub-stator cores 11 constitute a complete stator tooth, and the stator winding 2 is wound around the stator yoke portion 111, which is advantageous for lifting The slot full rate of the motor stator 100.
  • the number of the stator teeth 112 is equal to the number of the outer end portions 113
  • the number of the sub-stator tooth portions 114 is equal to the number of the splice outer end portions 115
  • the number of the stator windings 2 is equal to the number of the stator teeth portions 112.
  • the sum of the number and the number of stator teeth, that is, the stator winding 2 is wound between the adjacent two stator tooth portions 112, and the stator winding 2 is wound between the adjacent stator tooth portion 112 and the stator teeth.
  • the stator yoke portion 111 may be formed substantially in a semi-circular arc shape, and the two sub-stator tooth portions 114 are both disposed inside the stator yoke portion 111 and the two sub-stator tooth portions 114 are respectively located at two circumferential ends of the stator yoke portion 111, two The stator tooth portions 112 are provided inside the stator yoke portion 111 and in the circumferential direction of the stator yoke portion 111, the two stator tooth portions 112 are evenly spaced between the two sub-stator tooth portions 114, and the two outer end portions 113 are provided at The outer side of the stator yoke portion 111 and the two outer end portions 113 may be respectively disposed diametrically opposite to the two stator tooth portions 112, and the width of the outer end portion 113 is the same as the width of the corresponding stator tooth portion 112.
  • the end portions 115 are respectively disposed outside the stator yoke portion 111 and the two splice outer end portions 115 may be respectively disposed diametrically opposite to the two sub-stator tooth portions 114, and the width of the outer end portion 115 and the sub-stator tooth portion 114 are spliced.
  • the width is the same, and the length of the stator tooth portion 112 is greater than the length of the outer end portion 113, and the length of the outer end portion 113 is greater than the length of the splice outer end portion 115, and one of the two splice outer end portions 115 is provided with a connection convex portion.
  • the connecting groove 115b is matched with the connecting protrusion 115a, and the connecting protrusion 115a is correspondingly fitted in the connecting groove 115b.
  • the two sub-stator tooth portions 114 can be assembled into a complete stator tooth, thereby completing the stator core. 1 assembly.
  • stator teeth is the same as that of the stator teeth 112; the contact faces between the two sub-stator teeth 114 contacting the adjacent two sub-stator cores 11 are planes for processing.
  • Each of the sub-stator cores 11 is individually wound, and after the winding is completed, the plurality of sub-stator cores 11 are assembled; after the stator cores 1 are assembled, the stator yokes 111 of the two sub-stator cores 11 are assembled into a circular shape, four The stator teeth 112 and the two stator teeth are evenly spaced on the inner side of the stator yoke 111 to define six stator slots, each of which is located outside the stator yoke 111 and each splice outer end
  • the portions 115 are each formed by a corresponding sub-stator tooth portion 114 extending outward in the radial direction of the stator yoke portion 111.
  • Each of the four outer end portions 113 is located outside the stator yoke portion 111 and each outer end portion 113 is formed by a corresponding stator.
  • the tooth portions 112 are formed to extend outward in the radial direction of the stator yoke portion 111, and each of the outer end portions 113 is formed with a positioning mounting hole 113a.
  • the 113a is fixed to the casing of the motor 200.
  • the positioning mounting hole 113a may be a circular hole, and the positioning mounting hole 113a may be a light hole or a screw hole.
  • the positioning mounting hole 113a is provided with a threaded fastener, such as a screw, to facilitate the installation of the stator core 1.
  • the connecting protrusion 115a is formed by a partial end surface of the corresponding sub-stator tooth portion 114 protruding in the circumferential direction of the stator yoke portion 111, and the connecting groove 115b is formed by the corresponding sub-stator tooth portion 114.
  • a part of the end surface is recessed in the circumferential direction of the stator yoke portion 111 such that the outer contour of the connecting protrusion 115a is formed in a circular arc shape, and the shape of the connecting groove 115b is adapted to the shape of the connecting protrusion 115a, and the outer side of the connecting protrusion 115a
  • the contour is formed into a circular arc shape and the central angle of the connecting protrusion 115a is ⁇ >180°, thereby facilitating the fitting of the connecting protrusion 115a in the connecting groove 115b to ensure the assembling efficiency while avoiding the connecting protrusion 115a from the connecting concave.
  • the groove 115b is detached to ensure the connection strength of the adjacent sub-stator cores 11.
  • the motor 200 includes a motor stator 100 and a motor rotor 101.
  • the motor rotor 101 is a two-pole permanent magnet magnetic ring
  • the motor stator 100 is the motor stator 100 shown in FIGS.
  • the motor stator 100 is coaxially sleeved outside the motor rotor 101, and the motor stator 100 and the motor rotor 101 interact to rotate the motor rotor 101 about its central axis.
  • the stator winding 2 is a single wire winding, and the winding direction of each stator winding 2 is the same.
  • the present embodiment is substantially the same as the structure of the first embodiment, in which the same components are given the same reference numerals, except that the winding directions of the stator windings 2 are not completely the same.
  • the six stator windings 2 can be divided into two groups, and the stator windings 2 in the first group are three, and the three stator windings 2 are positively wound, and the second There are three stator windings 2 in the group, and the three stator windings 2 are reverse wound; three stator windings 2 in the first group and three stator windings 2 in the second group are along the circumference of the motor stator 100 Alternately spaced, that is, each stator winding 2 in the first group is located between two adjacent stator windings 2 in the second group, and each stator winding 2 in the second group is in the first group Between two adjacent stator windings 2 .

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
PCT/CN2018/093151 2017-12-11 2018-06-27 电机定子和具有其的电机 WO2019114250A1 (zh)

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JP2019569450A JP6888126B2 (ja) 2017-12-11 2018-06-27 モータ固定子及びそれを有するモータ

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CN201721738332.5U CN207518366U (zh) 2017-12-11 2017-12-11 电机定子和具有其的电机
CN201721738332.5 2017-12-11
CN201711311252.6A CN107994691A (zh) 2017-12-11 2017-12-11 电机定子和具有其的电机
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CN114598048A (zh) * 2022-03-21 2022-06-07 珠海格力电器股份有限公司 定子组件、永磁同步电机、活塞式压缩机和冰箱

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CN106849398A (zh) * 2016-12-15 2017-06-13 广东威灵电机制造有限公司 定子和具有其的电机
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CN112165190A (zh) * 2020-09-30 2021-01-01 安徽美芝精密制造有限公司 电机、压缩机和制冷设备
CN114598048A (zh) * 2022-03-21 2022-06-07 珠海格力电器股份有限公司 定子组件、永磁同步电机、活塞式压缩机和冰箱

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