WO2022110294A1 - 定子的绕线方法、定子及微型水泵 - Google Patents

定子的绕线方法、定子及微型水泵 Download PDF

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Publication number
WO2022110294A1
WO2022110294A1 PCT/CN2020/134682 CN2020134682W WO2022110294A1 WO 2022110294 A1 WO2022110294 A1 WO 2022110294A1 CN 2020134682 W CN2020134682 W CN 2020134682W WO 2022110294 A1 WO2022110294 A1 WO 2022110294A1
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WO
WIPO (PCT)
Prior art keywords
spanning
teeth
winding
coil
wire
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2020/134682
Other languages
English (en)
French (fr)
Inventor
许德涛
张奇
杨森森
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AAC Technologies Holdings Shenzhen Co Ltd
AAC Microtech Changzhou Co Ltd
Original Assignee
AAC Acoustic Technologies Shenzhen Co Ltd
AAC Microtech Changzhou Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by AAC Acoustic Technologies Shenzhen Co Ltd, AAC Microtech Changzhou Co Ltd filed Critical AAC Acoustic Technologies Shenzhen Co Ltd
Publication of WO2022110294A1 publication Critical patent/WO2022110294A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/30—Manufacture of winding connections
    • H02K15/33—Connecting winding sections; Forming leads; Connecting leads to terminals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0606—Canned motor pumps
    • F04D13/064—Details of the magnetic circuit
    • 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
    • H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/08—Forming windings by laying conductors into or around core parts
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/08—Forming windings by laying conductors into or around core parts
    • H02K15/095—Forming windings by laying conductors into or around core parts by laying conductors around salient poles
    • 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
    • H02K3/50—Fastening of winding heads, equalising connectors, or connections thereto

Definitions

  • the present application relates to the technical field of power equipment, and in particular, to a stator winding method, a stator and a miniature water pump.
  • the stator is a common driving component whose main function is to generate a rotating magnetic field, and to drive the rotor to rotate through the principle of electromagnetic induction to output rotational motion.
  • a common stator includes an iron core and windings, the iron core includes a yoke and a plurality of teeth surrounding the yoke, and the windings are wound around the teeth.
  • the upper or lower surface of the yoke is usually provided with winding posts. One-phase winding, so that the winding will not loosen.
  • One of the objectives of the present application is to propose a stator winding method to solve the problems of loose wires, terminals occupying the end face area, and unfavorable process positioning and support during winding of the existing non-terminal iron core.
  • the second objective of this application is to propose a stator, which is wound by using the above-mentioned stator winding method.
  • the third objective of the present application proposes a micro water pump, which adopts the above-mentioned stator.
  • a winding method for a stator includes an iron core and a winding
  • the iron core includes a yoke and a plurality of teeth surrounding the yoke, the plurality of teeth are at least two groups
  • the windings Line methods include:
  • the auxiliary piece including a wire hanging portion
  • the wire is passed around the wire hanging portion and wound around another group of the tooth portions to form another phase winding.
  • the winding of each phase includes a coil and a bridge wire connecting two adjacent coils, and the tooth portion between two adjacent coils is defined as a cross tooth, and the Winding methods also include:
  • the bridge wire is wound around the span teeth.
  • the winding of the bridge wire around the spanning teeth includes:
  • the bridging wire is looped at least one turn on the spanning teeth.
  • the tooth portion includes a first surface and a second surface opposite to the first surface, and the winding of the bridge wire on the span tooth includes:
  • the bridge wire is bent and extended from the first surface side of one of the coils to the second surface side, bypassed the second surface side of the spanning teeth, and then bent and extended to the first surface side and extended to the first surface side. connected to the first surface side of the other of said coils; or,
  • the bridge wire is bent and extended from the second surface side of one of the coils to the first surface side, bypassed the first surface side of the spanning teeth, and then bent and extended to the second surface side and extended. Connect the second surface side of the other of the coils.
  • the spanning teeth include at least two, and the wrapping the bridge wire around the spanning teeth includes:
  • the bridge wire is wound around the spanning teeth in a reciprocating manner between the at least two spanning teeth.
  • a stator includes an iron core and windings, the iron core includes a yoke portion, a plurality of tooth portions and at least two-phase windings, the plurality of tooth portions are spaced around the yoke portion, and the plurality of tooth portions are formed into at least two phases. Two groups, each group of teeth is wound with a phase winding, and the winding is wound on the iron core by the above-mentioned winding method.
  • each phase includes a coil and a bridge wire connecting two adjacent coils, and the tooth portion between two adjacent coils is defined as a cross tooth, and the A bridge wire is wound around the spanning teeth.
  • the tooth portion includes a first surface and a second surface opposite to the first surface
  • the bridge line includes a first spanning line segment, a second spanning line segment and a third spanning line segment that are connected in sequence , the second spanning line segment extends along the second surface, the first spanning line segment extends obliquely from one end of the second spanning line segment toward the first surface to one of the coils, and the third spanning line segment Extending obliquely from the other end of the second spanning line segment toward the first surface; or,
  • the second spanning line segment extends along the first surface, the first spanning line segment extends obliquely from one end of the second spanning line segment toward the second surface to one of the coils, and the third spanning line segment extends from The other end of the second spanning line segment extends obliquely toward the second surface.
  • the bridge wire further includes a fourth cross-wire segment extending from the third cross-wire segment away from the first cross-wire segment and connected to another coil of the winding.
  • the number of the spanning teeth is at least two, and the bridge wire is wound around the spanning teeth in a reciprocating manner between the at least two spanning teeth.
  • a miniature water pump comprising a pump body, an impeller, a rotor and the above-mentioned stator, wherein the pump body has an inner cavity, a liquid inlet communicating with the inner cavity, and communicating with the inner cavity.
  • the liquid outlet of the cavity, the pump body is provided with a rotating shaft, the impeller is arranged in the inner cavity and is rotatably connected with the rotating shaft, the rotor is installed on the impeller, and the stator is installed on the pump body , the stator is used to drive the rotor to rotate.
  • the beneficial effect of the present application is that after winding one-phase coils on one group of teeth parts, by passing the wires around the hanging parts, and then winding another-phase windings, in this way, the two-phase windings can be in a taut state. , the windings are not loose, and the winding posts provided on the yoke in the existing solution can be eliminated, thereby reducing the thickness of the iron core, facilitating small-size design, reducing parts and reducing costs.
  • FIG. 1 is a schematic flowchart of a method for winding a stator according to an embodiment of the present application
  • FIG. 2 is a schematic structural diagram of an embodiment in FIG. 1 when an auxiliary component is used to assist the stator winding;
  • FIG. 3 is a schematic structural diagram of a stator provided by an embodiment of the present application.
  • FIG. 4 is a schematic structural diagram of the winding of the bridge wire in FIG. 3;
  • FIG. 5 is a schematic structural diagram of a stator provided by another embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of the winding of the bridge wire in FIG. 5;
  • FIG. 7 is a schematic structural diagram of a stator provided by another embodiment of the present application.
  • Figure 8 is a schematic cross-sectional view along line A-A in Figure 7;
  • FIGS. 1 to 8 are schematic structural diagrams of the stator in FIGS. 1 to 8.
  • Fig. 10 is the structural representation of the iron core in Fig. 9;
  • FIG. 11 is a schematic structural diagram of a micro water pump proposed in an embodiment of the present application from a top perspective;
  • FIG. 12 is a schematic structural diagram of a micro water pump proposed in an embodiment of the present application from a bottom perspective;
  • FIG. 13 is an exploded schematic diagram of a micro water pump proposed in an embodiment of the application.
  • 300 micro water pump
  • 301 pump body
  • 3011 inner cavity
  • 3012 liquid inlet
  • 3013 liquid outlet
  • 3014 rotating shaft
  • 302 impeller
  • 303 rotor
  • an embodiment of the present application provides a stator winding method, wherein the stator 100 includes an iron core 10 and a winding 20 , and the iron core 10 includes a yoke portion 11 and a plurality of teeth surrounding the yoke portion 11 . part 12, the plurality of tooth parts 12 are divided into at least two groups, the windings are wound around the tooth parts, and the winding method includes:
  • S01 provide an auxiliary part 200, and the auxiliary part 200 includes a wire hanging part 201;
  • the stator provided in this embodiment is a three-phase stator.
  • the iron core 10 includes nine teeth 12 , and the nine teeth 12 are equally divided into a first group, a second group and a third group
  • the windings include U-phase windings, V-phase windings and W-phase windings.
  • the U-phase windings are wound on the first group of teeth
  • the V-phase windings are wound on the second group of teeth
  • the W-phase windings are wound on the third group of teeth. .
  • the wire When the winding 20 is wound on the iron core 10, the wire is wound on the three teeth of the first group of teeth in turn to form a U-phase winding, and after the winding of the U-phase winding is completed, the wire is passed around the wire hanging portion 201 of the auxiliary member 200. , and then winding the three teeth of the second group of teeth in turn to form a V-phase winding, after completing the winding of the V-phase winding, continue to pass the wire around the wire hanging part 201 of the auxiliary component 200, and then at the third group of teeth.
  • the three teeth are wound in sequence to form a W-phase winding.
  • the wires are passed around the wire hanging portion 201, and then another phase winding is wound, so that the two-phase windings can be made. It is in a taut state, the windings are not loose, and the winding posts provided on the yoke 11 in the existing solution can be eliminated, so that the thickness of the iron core can be reduced, which is conducive to small-size design, and at the same time, the number of parts and components can be reduced. cost.
  • stator 100 is not limited to a three-phase winding, and may also be a two-phase or more than three-phase multi-phase winding.
  • stator may be a symmetrical three-phase stator or an asymmetrical three-phase stator, wherein the three teeth of each group of teeth of the symmetrical three-phase stator are arranged at an included angle of 120°. It can be understood that the included angle between the three teeth of each group of teeth of the asymmetric three-phase stator fingers is not 120°.
  • the winding directions of the U-phase winding, the V-phase winding and the W-phase winding are all the same.
  • the stator 100 includes nine teeth 12, and the nine teeth 12 are equally divided into a first group, a second group and a third group.
  • the windings Including U-phase winding, V-phase winding and W-phase winding, U-phase winding is wound on the first set of teeth, V-phase winding is wound on the second set of teeth, W-phase winding is wound on the third set of teeth, any There are two spanning teeth 121 between two adjacent teeth of the same phase.
  • each phase winding 20 includes a coil 21 and a bridge wire 22 connecting two adjacent coils 21 , and the teeth 12 between adjacent two coils 21 are defined as crossing teeth 121 , the winding method of the stator 100 further includes: winding the bridge wire 22 around the bridge teeth 121 .
  • the method of winding the bridge wire 22 around the cross teeth 121 may be:
  • the bridge wire 22 is looped at least once on the spanning teeth 121 .
  • FIG. 3 Figure 4 and Figure 9, taking the U-phase winding as an example: there are two spanning teeth between U1 and U2, U2 and U3, and U1 and U3 respectively.
  • the outlet end of the U1 coil is wound at least one turn on the two spanning teeth between the U1 coil and the U2 coil, and then the U2 coil is wound to the tooth 12 where the U2 coil is located.
  • the outlet end of the U2 coil is wound at least one turn on the two spanning teeth between the U2 coil and the U3 coil, until the U3 coil is wound.
  • the winding direction of the bridge wire 22 is the same as the winding direction of the coil 21 in each winding. With this arrangement, it is beneficial to form currents in the same direction.
  • the coil 21 may be formed by winding in a counterclockwise direction, or the coil 21 may be formed by winding in a clockwise direction.
  • the tooth portion 12 includes a first surface 12a and a second surface 12b opposite to the first surface 12a
  • winding the bridge wire 22 on the bridge tooth 121 includes: winding the first one in the same phase winding
  • the outlet end 211 of the completed coil is bent and extended along the side of the first surface 12a to the side of the second surface 12b, bypassing the side of the second surface 12b of the teeth 121 and then bent and extended to the side of the first surface 12a to form a bridge line 22, and connect to the first surface 12a side of another coil for coil winding; or, the outlet end 211 of the first wound coil in the same phase winding is bent and extended along the second surface 12b side to the first surface 12a side.
  • the bridge wire 22 passes over the first surface 12a side of the tooth 121, then bends and extends to the second surface 12b side and connects to the second surface 12b side of another coil for coil winding.
  • the outlet end 211 of the U1 coil extends along the first surface 12a side of the U1 coil and then crosses between the U1 coil and the U2 coil.
  • the second surface 12b side of the tooth extends, bypasses the second surface 12b side of the tooth 121 and connects to the first surface 12a side of the U2 coil, and then starts to wind the U2 coil.
  • the U2 coil is wound.
  • the outlet end 211 extends along the first surface 12a side of the U2 coil and then extends between the U2 coil and the U3 coil across the second surface 12b side of the tooth, bypasses the second surface 12b side of the tooth 121 and connects to the U3 coil. On the side of the first surface 12a, then the U3 coil is wound until the U3 coil is completed. Similarly, the V-phase winding and the W-phase winding are continued to be completed.
  • the outlet end 211 of the U1 coil extends along the second surface 12b side of the U1 coil and then extends to the side of the first surface 12a of the teeth between the U1 coil and the U2 coil, bypassing the After crossing the first surface 12a side of the tooth 121, the second surface 12b side of the U2 coil is connected, and then the U2 coil is wound.
  • the outlet end 211 of the U2 coil is along the second surface of the U2 coil.
  • the 12b side protrudes and extends to the first surface 12a side of the tooth between the U2 coil and the U3 coil, bypasses the first surface 12a side of the tooth 121 and connects to the second surface 12b side of the U3 coil, and then starts the U3 coil. winding until the winding of the U3 coil is completed, in the same way, continue to complete the V-phase winding and the W-phase winding.
  • the first surface 12 a and the second surface 12 b of the tooth portion 12 are also the first surface 12 a and the second surface 12 b of the coil 21 .
  • the spanning teeth 121 include at least two, and the bridge wire 22 is wound around the spanning teeth 121, including:
  • the bridge wire 22 is wound around the spanning teeth 121 in a reciprocating manner between at least two spanning teeth 121 .
  • the outlet end 211 of the U1 coil protrudes along the second surface 12b side of the U1 coil and then extends to the first place between the U1 coil and the U2 coil.
  • the first surface 12a side of the spanning teeth is bent, the wire extends out of the first spanning tooth and then bends in the direction of the second spanning tooth side 12b, and then the wire is connected along the second surface 12b side of the U2 coil and The U2 coil is wound.
  • the outlet end 211 of the U2 coil protrudes along the second surface 12b side of the U2 coil and then crosses the first surface of the teeth between the U2 coil and the U3 coil.
  • the wire extends out of the first spanning tooth and then bends in the direction of the second surface side 12b of the second spanning tooth, and then the wire is connected along the second surface 12b side of the U3 coil and wound the U3 coil.
  • the outlet end 211 of the U1 coil extends along the first surface 12a side of the U1 coil and then extends to the second surface 12b side of the teeth between the U1 coil and the U2 coil. Bending, the wire extends out of the first spanning tooth and then bends in the direction of the first surface side 12a of the second spanning tooth, and then the wire is connected along the first surface 12a of the U2 coil and wound into the U2 coil, and the U2 coil is completed.
  • the outlet end 211 of the U2 coil extends along the first surface 12a side of the U2 coil and then bends to the second surface 12b side of the first spanning tooth between the U2 coil and the U3 coil, and the wire extends out of the second surface 12b.
  • One spanning tooth is then bent in the direction of the first surface side 12a of the second spanning tooth, and then the wire is connected along the first surface 12a side of the U3 coil and the U3 coil is wound. Similarly, continue to complete the V-phase winding and the W-phase winding. phase winding.
  • the auxiliary parts are used to continue the winding of the second-phase coil, until all the coils are wound to ensure that the conductors are wound. Tight and not scattered, the wires between the coils of each phase do not need to be wound and fixed with terminals, which saves the space in the thickness direction of the iron core 10, reduces the number of parts, and simplifies the structure of the iron core.
  • the bridge wire 22 is no longer loose, which improves the reliability of winding winding, and the bridge wire 22 is only partially arranged on the end face of the iron core 10, which reduces the effect of the bridge wire 22 on the end face area of the iron core 10. Occupied, thereby effectively releasing the end face area of the iron core 10, which is beneficial to provide process positioning, support, etc., and simplifies the tooling.
  • an embodiment of the present application further provides a stator 100 including an iron core 10 and a winding 20 , and the iron core 10 includes a yoke 11 , a plurality of teeth 12 surrounding the yoke 11 and at least two-phase windings 20.
  • Each group of teeth 12 is wound with a phase winding, and the winding 20 is wound on the iron core 10 by the following winding method:
  • the auxiliary part 200 includes a wire hanging part 201;
  • the wire is passed around the wire hanging portion 201 and wound around the other group of teeth 12 to form another phase winding.
  • the stator provided in this embodiment is a three-phase stator
  • the iron core includes nine teeth
  • the nine teeth are divided into a first group, a second group and a third group
  • the winding includes U-phase winding, V-phase winding and W-phase winding
  • U-phase winding is wound on the first group of teeth
  • V-phase winding is wound on the first group of teeth
  • W-phase winding is wound on the third group of teeth.
  • the wire is wound on the three teeth of the first group of teeth in turn to form a U-phase winding.
  • the three teeth of the second group of teeth are wound in turn to form a V-phase winding.
  • the wire continues to pass around the wire hanging part 201 of the auxiliary component 200, and then the third group of teeth is wound.
  • the teeth are wound in sequence to form a W-phase winding.
  • the yoke 11 is an annular structure with a hollow inner hole 111 , the yoke 11 includes an inner surface 112 facing the hollow inner hole 111 and an outer surface 113 facing away from the inner surface 112 , the teeth 12
  • the yoke portion 11 is protruded from the outer surface 113 along the circumferential direction of the yoke portion 11 .
  • the tooth portion 12 can also be protruded from the inner surface 112 along the circumferential direction of the yoke portion 11 .
  • the windings of each phase are in a taut state, and the windings are not loose, and the winding posts provided on the yoke 11 in the existing solution can be eliminated, so that the thickness of the iron core can be reduced, Conducive to small size design, while reducing parts and costs.
  • stator 100 is not limited to a three-phase winding, and may also be a two-phase or more than three-phase multi-phase winding.
  • stator can be a symmetrical three-phase stator or an asymmetric three-phase stator, wherein the three teeth of each group of teeth of the symmetrical three-phase stator are arranged at an included angle of 120°. It can be understood that the included angle between the three teeth of each group of teeth of the asymmetric three-phase stator fingers is not 120°.
  • the winding directions of the U-phase winding, the V-phase winding and the W-phase winding are all the same.
  • the stator 100 includes nine teeth 12, and the nine teeth 12 are equally divided into a first group, a second group and a third group.
  • the windings Including U-phase winding, V-phase winding and W-phase winding, U-phase winding is wound on the first set of teeth, V-phase winding is wound on the second set of teeth, W-phase winding is wound on the third set of teeth, any There are two spanning teeth 121 between two adjacent teeth of the same phase.
  • each phase winding 20 includes a coil 21 and a bridge wire 22 connecting two adjacent coils 21 , and the teeth 12 between adjacent two coils 21 are defined as crossing teeth 121 , the bridge wire 22 of the stator 100 is wound around the crossing teeth 121 .
  • the bridging wire 22 wraps around the spanning teeth 121 at least once.
  • FIG. 3 Figure 4 and Figure 9, taking the U-phase winding as an example: there are two spanning teeth between U1 and U2, U2 and U3, and U1 and U3 respectively.
  • the outlet end of U1 coil is between U1 coil and U2 At least one turn is respectively wound on the two spanning teeth between the coils to form a bridge wire 22, and the outlet end of the U2 coil is wound at least one turn on the two spanning teeth between the U2 coil and the U3 coil respectively to form a bridge line 22.
  • the winding direction of the bridge wire 22 is the same as the winding direction of the coil 21 in each winding. With this arrangement, it is beneficial to form currents in the same direction.
  • the coil 21 may be formed by winding in a counterclockwise direction, or the coil 21 may be formed by winding in a clockwise direction.
  • the tooth portion 12 includes a first surface 12a and a second surface 12b opposite to the first surface 12a
  • the bridge line 22 includes a first spanning line segment 221, a second spanning line segment 222, and a third spanning line segment 222 connected in sequence.
  • the spanning line 223, the second spanning line 222 extends along the second surface 12b
  • the first spanning line 221 extends obliquely from one end of the second spanning line 222 toward the first surface 12a to one coil 21
  • the third spanning line 223 extends from the second spanning line 223 to the first surface 12a.
  • the other end of the line segment 222 extends obliquely toward the first surface 12a to the other coil 21; alternatively, the tooth portion 12 includes a first surface 12a and a second surface 12b opposite to the first surface 12a, and the bridge line 22 includes sequentially connected first surfaces 12a.
  • the bridge wire 22 further includes a fourth cross-wire segment 224 extending away from the first cross-wire segment 221 and connected to another coil 21 by a third cross-wire segment 223 .
  • the outlet end 211 of the U1 coil forms a first spanning line segment 221, and the second spanning line segment 222 is along the spanning teeth 121 between the U1 coil and the U2 coil.
  • the second surface 12b of the second spanning line 221 extends obliquely from one end of the second spanning line segment 222 toward the first surface 12a to the U1 coil, and the third spanning line segment 223 extends from the other end of the second spanning line segment 222 toward the first surface 12a.
  • the slanted extension forms a fourth cross segment connected to the U2 coil, the V1 coil and the V2 coil in the V-phase winding, the bridge line between the V2 coil and the V3 coil, and the W1 coil and W2 coil and W2 coil and W3 coil of the W-phase winding.
  • the bridge line between them is the same.
  • the outgoing end 211 of the U1 coil forms a first crossover segment 221
  • the second crossover segment 222 extends along the first surface 12a
  • the first crossover segment 221 extends obliquely from one end of the second crossover segment 222 toward the second surface 12b to the U1 coil
  • the third spanning line segment 223 extends obliquely from the other end of the second spanning line segment 222 toward the second surface 12b to the U2 coil
  • the V1 coil and the V2 coil in the V-phase winding
  • the bridge line between the V2 coil and the V3 coil and the W The same is true for the bridge line between the W1 coil and the W2 coil and the W2 coil and the W3 coil of the phase winding.
  • the first surface 12 a and the second surface 12 b of the tooth portion 12 are also the first surface 12 a and the second surface 12 b of the coil 21 .
  • the stator includes at least two spanning teeth 121 , and the bridge wire 22 is wound around the spanning teeth 121 in a reciprocating manner between the at least two spanning teeth 121 .
  • the bridge line between the U1 coil and U2 is the outlet end 211 of the U1 coil extending along the second surface 12b side of the U1 coil and then extending toward the U1 coil and the U1 coil.
  • the first span between the U2 coils is bent on the side of the first surface 12a of the tooth to form the first span segment 221 of the bridge line, and the wire extends on the first surface 12a of the first span tooth to form the second span of the bridge line
  • the line segment 222 is then bent in the direction of the second spanning the second surface side 12b of the tooth to form the third spanning line segment 223 of the bridge line, and the third spanning line segment 223 is away from the first span along the second surface 12b of the U2 coil.
  • the line segment 221 is extended and connected to the U2 coil to form the fourth cross-line segment 224 of the bridge line, and then the U2 coil is wound.
  • the first crossover tooth is bent at the first surface 12a side, the wire extends out of the first crossover tooth and then bends in the direction of the second surface side 12b of the second crossover tooth, and then the wire is along the second surface of the U3 coil.
  • the 12b side is connected to the U3 coil, the V1 coil and the V2 coil in the V-phase winding, the bridge line between the V2 coil and the V3 coil, and the W1 coil and the W2 coil of the W-phase winding and the bridge line between the W2 coil and the W3 coil. The same is true.
  • the bridge line between the U1 coil and the U2 is that the outlet end 211 of the U1 coil extends along the first surface 12a side of the U1 coil and then extends to the second surface 12b of the teeth between the U1 coil and the U2 coil.
  • the wire extends out of the first spanning tooth and then bends in the direction of the first surface side 12a of the second spanning tooth, and then the wire is connected to the U2 coil along the first surface 12a of the U2 coil, and the outlet end 211 of the U2 coil After extending along the first surface 12a side of the U2 coil, it is bent to the second surface 12b side of the first crossing tooth between the U2 coil and the U3 coil, and the wire extends out of the first crossing tooth and then crosses the second tooth.
  • the first surface side 12a of the tooth is bent in the direction of the first surface side 12a, and the rear wire is connected to the U3 coil along the first surface 12a side of the U3 coil, the V1 coil and the V2 coil in the V-phase winding, and the bridge wire between the V2 coil and the V3 coil and the W.
  • the bridge line between the W1 coil and the W2 coil and the W2 coil and the W3 coil of the phase winding is bent in the direction of the first surface side 12a, and the rear wire is connected to the U3 coil along the first surface 12a side of the U3 coil, the V1 coil and the V2 coil in the V-phase winding, and the bridge wire between the V2 coil and the V3 coil and the W.
  • an embodiment of the present application further provides a micro water pump 300 , including a pump body 301 , an impeller 302 , a rotor 303 , and a stator 100 wound by using the stator winding method provided by the embodiment of the present application
  • the pump body 301 has an inner cavity 3011, a liquid inlet 3012 communicating with the inner cavity 3011 and a liquid outlet 3013 communicating with the inner cavity 3011.
  • the pump body 301 is provided with a rotating shaft 3014, and the impeller 302 is arranged in the inner cavity 3011 and is rotatably connected with the rotating shaft 3014.
  • the rotor 303 is installed on the impeller 302
  • the stator 100 is installed on the pump body 301
  • the stator 100 is used to drive the rotor 303 to rotate.
  • the stator 100 is supplied with alternating current, and according to the principle of electromagnetic induction, the stator 100 generates a rotating magnetic field, the rotor 303 rotates under the action of ampere force in the rotating magnetic field, and the rotating rotor 303 drives the impeller 302 to rotate.
  • the liquid enters the inner cavity 3011 from the liquid inlet 3012, rotates at a high speed and performs centrifugal motion under the impeller 302, when the liquid reaches the liquid outlet 3013, it is thrown out from the liquid outlet 3013.
  • the pressure decreases, which is much lower than the atmospheric pressure, and the external fluid is replenished into the inner cavity 3011 from the liquid inlet 3012 under the action of the atmospheric pressure, and the above-mentioned actions are repeated to realize the transportation of the liquid.

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Abstract

定子（100）的绕线方法、定子（100）及微型水泵（300），定子（100）包括铁芯（10）和绕组（20），铁芯（10）包括轭部（11）和多个环绕轭部（11）的齿部（12），多个齿部（12）分为至少两组，绕线方法包括：提供辅助件（200），辅助件（200）包括挂线部（201）；将导线绕制于其中一组齿部（12），成型一相绕组（20）；成型一相绕组（20）后，将导线绕过挂线部（201）并绕制于另一组齿部（12），成型另一相绕组（20）。该定子（100）的绕线方法可以使得两相绕组（20）之间处于绷紧状态，绕组（20）不松散，而且，可以取消设置在轭部（11）上的绕线柱，从而可以减小铁芯（10）的厚度，利于小尺寸设计，同时减少了零部件，降低成本。

Description

定子的绕线方法、定子及微型水泵 技术领域
本申请涉及电力设备技术领域，尤其涉及定子的绕线方法、定子及微型水泵。
 背景技术
定子是一种常见的驱动部件，主要作用是产生旋转磁场，通过电磁感应原理驱动转子转动以输出旋转运动。常见的定子包括铁芯和绕组，铁芯包括轭部和多个环绕轭部的齿部，绕组缠绕于齿部。两相及两相以上的定子，轭部的上表面或者下表面通常要设置绕线柱，绕线柱用于绕完一相绕组后，导线可以在绕线柱上缠绕几圈再绕制另一相绕组，使得绕组不会松散。
 技术问题
在轭部的上表面或者下表面设置绕线柱导致铁芯的厚度较厚，不利于小尺寸设计，同时增加了零件数量，提高了成本。因此，有必要提出一种新的定子的绕线方法以解决上述问题。
 技术解决方案
本申请的目的之一提出一种定子的绕线方法，以解决现有无端子铁芯在绕组时存在导线松散、端子占用端面区域以及不利于工艺定位和支撑等问题。本申请的目的之二提出一种定子，该定子采用上述的定子的绕线方法绕制而成。本申请的目的之三提出一种一种微型水泵，该微型水泵采用上述的定子。
本申请的目的之一采用如下技术方案实现：
一种定子的绕线方法，所述定子包括铁芯和绕组，所述铁芯包括轭部和多个环绕所述轭部的齿部，多个所述齿部分为至少两组，所述绕线方法包括：
提供辅助件，所述辅助件包括挂线部；
将导线绕制于其中一组所述齿部，成型一相绕组；
成型所述一相绕组后，将所述导线绕过所述挂线部并绕制于另一组所述齿部，成型另一相绕组。
作为一种改进方式，每一相所述绕组包括线圈和连接相邻两个所述线圈的过桥线，定义相邻两个所述线圈之间的的所述齿部为跨越齿，所述绕线方法还包括：
将所述过桥线绕制于所述跨越齿。
作为一种改进方式，所述将所述过桥线绕制于所述跨越齿，包括：
将所述过桥线在所述跨越齿上环绕至少一圈。
作为一种改进方式，所述齿部包括第一表面和与所述第一表面相对的第二表面，所述将所述过桥线绕制于所述跨越齿，包括：
所述过桥线从其中一个所述线圈的第一表面侧向所述第二表面侧弯折延伸，绕过所述跨越齿的第二表面侧后向所述第一表面侧弯折延伸并连接另一个所述线圈的第一表面侧；或者，
所述过桥线从其中一个所述线圈的第二表面侧向所述第一表面侧弯折延伸，绕过所述跨越齿的第一表面侧后向所述第二表面侧弯折延伸并连接另一个所述线圈的第二表面侧。
作为一种改进方式，所述跨越齿包括至少两个，所述将所述过桥线绕制于所述跨越齿，包括：
将所述过桥线在所述至少两个跨越齿之间以往复弯折的方式绕制于所述跨越齿。
本申请的目的之二采用如下技术方案实现：
一种定子，包括铁芯和绕组，所述铁芯包括轭部、多个齿部和至少两相绕组，所述多个齿部环绕所述轭部间隔设置，所述多个齿部分成至少两组，每组所述齿部绕制一相绕组，所述绕组采用上述绕线方法绕制于所述铁芯。
作为一种改进方式，每一相所述绕组包括线圈和连接相邻两个所述线圈的过桥线，定义相邻两个所述线圈之间的的所述齿部为跨越齿，所述过桥线绕制于所述跨越齿。
作为一种改进方式，所述齿部包括第一表面和与所述第一表面相对的第二表面，所述过桥线包括依次连接的第一跨线段、第二跨线段和第三跨线段，所述第二跨线段沿所述第二表面延伸，所述第一跨线段从所述第二跨线段的一端朝向所述第一表面倾斜延伸至一个所述线圈，所述第三跨线段从所述第二跨线段的另一端朝向所述第一表面倾斜延伸；或者，
所述第二跨线段沿所述第一表面延伸，所述第一跨线段从所述第二跨线段的一端朝向所述第二表面倾斜延伸至一个所述线圈，所述第三跨线段从所述第二跨线段的另一端朝向所述第二表面倾斜延伸。
作为一种改进方式，所述过桥线还包括自所述第三跨线段向远离所述第一跨线段延伸并连接于所述绕组的另一个所述线圈的第四跨线段。
作为一种改进方式，所述跨越齿的数量为至少两个，所述过桥线在所述至少两个跨越齿之间以往复弯折的方式绕制于所述跨越齿。
本申请的目的之三采用如下技术方案实现：一种微型水泵，包括泵体、叶轮、转子及上述定子，所述泵体具有内腔、连通所述内腔的进液口及连通所述内腔的出液口，所述泵体设有转轴，所述叶轮设于所述内腔内并与所述转轴转动连接，所述转子安装于所述叶轮，所述定子安装于所述泵体，所述定子用于驱动所述转子转动。
 有益效果
本申请的有益效果在于：在其中一组齿部绕制一相线圈后，通过将导线绕过挂线部，再绕制另一相绕组，这样，可以使得两相绕组之间处于绷紧状态，绕组不松散，而且，可以取消现有方案设置在轭部上的绕线柱，从而可以减小铁芯的厚度，利于小尺寸设计，同时减少了零部件，降低成本。
 附图说明
图1为本申请实施例提供的定子的绕线方法流程示意图；
图2为图1中一实施例提出的使用辅助件辅助定子绕线时的结构示意图；
图3为本申请一实施例提供的定子的结构示意图；
图4为图3中过桥线绕制的结构示意图；
图5为本申请另一实施例提供的定子的结构示意图；
图6为图5中过桥线绕制的结构示意图；
图7为本申请又一实施例提供的定子的结构示意图；
图8为图7中沿A-A线的剖视示意图；
图9为图1至图8中定子的结构示意图；
图10为图9中铁芯的结构示意图；
图11为本申请一实施例提出的微型水泵的顶部视角的结构示意图；
图12为本申请一实施例提出的微型水泵的底部视角的结构示意图；
图13为本申请一实施例提出的微型水泵的爆炸示意图。
图中：
100、定子；
10、铁芯；11、轭部；111、中空内孔；112、内表面；113、外表面；12、齿部；12a、第一表面；12b、第二表面；121、跨越齿；
    20、绕组；21、线圈；211、出线端；22、过桥线；221、第一跨线段；222、第二跨线段；223、第三跨线段；224、第四跨线段；
200、辅助件；201、挂线部；
300、微型水泵；301、泵体；3011、内腔；3012、进液口；3013、出液口；3014、转轴；302、叶轮；303、转子。
 本发明的实施方式
下面结合附图和实施方式对本申请作进一步说明。
需要说明的是，本申请实施例中所有方向性指示（诸如上、下、左、右、前、后、内、外、顶部、底部……）仅用于解释在某一特定姿态（如附图所示）下各部件之间的相对位置关系等，如果该特定姿态发生改变时，则该方向性指示也相应地随之改变。
还需要说明的是，当元件被称为“固定于”或“设置于”另一个元件上时，该元件可以直接在另一个元件上或者可能同时存在居中元件。当一个元件被称为“连接”另一个元件，它可以是直接连接另一个元件或者可能同时存在居中元件。
请参阅图1至图9，本申请实施例提供了一种定子的绕线方法，其中，定子100包括铁芯10和绕组20，铁芯10包括轭部11和多个环绕轭部11的齿部12，多个齿部12分为至少两组，绕组缠绕于齿部，绕线方法包括：
S01：提供辅助件200，辅助件200包括挂线部201；
S02：将导线绕制于其中一组齿部12，成型一相绕组；
S03：成型一相绕组后，将导线绕过挂线部201并绕制于另一组齿部12，成型另一相绕组。
例如，请参阅图2与图9，本实施例提供的定子为三相定子，铁芯10包括九个齿部12，九个齿部12均分为第一组、第二组及第三组，绕组包括U相绕组、V相绕组及W相绕组，U相绕组绕制于第一组齿部，V相绕组绕制于第二组齿部，W相绕组绕制于第三组齿部。绕组20在铁芯10上绕制时，将导线在第一组齿部的三个齿部依次缠绕形成U相绕组，完成U相绕组的缠绕后将导线绕过辅助件200的挂线部201，然后在第二组齿部的三个齿部依次缠绕形成V相绕组，在完成V相绕组的缠绕后继续将导线绕过辅助件200的挂线部201，然后在第三组齿部的三个齿部依次缠绕形成W相绕组。
本申请实施例提供的定子的绕线方法，在其中一组齿部绕制一相线圈后，通过将导线绕过挂线部201，再绕制另一相绕组，这样，可以使得两相绕组之间处于绷紧状态，绕组不松散，而且，可以取消现有方案设置在轭部11上的绕线柱，从而可以减小铁芯的厚度，利于小尺寸设计，同时减少了零部件，降低成本。
应当说明的是，定子100不局限于是三相绕组，也可以是二相或三相以上的多相绕组。
还应当说明的是，定子可以是对称三相定子或不对称三相定子，其中，对称三相定子指的每一组齿部的三个齿部呈120°夹角设置。可以理解地，不对称三相定子指的每一组齿部的三个齿部两两之间的夹角不为120°。
可选地，U相绕组、V相绕组及W相绕组的卷绕方向均相同。
为了便于理解，以下方案均以定子100为三相绕组为例进行说明，铁芯10包括九个齿部12，九个齿部12均分为第一组、第二组及第三组，绕组包括U相绕组、V相绕组及W相绕组，U相绕组绕制于第一组齿部，V相绕组绕制于第二组齿部，W相绕组绕制于第三组齿部，任意相邻的两个同一相齿部之间均具有两个跨越齿121。
请参阅图3、图4与图9，每一相绕组20包括线圈21和连接相邻两个线圈21的过桥线22，定义相邻两个线圈21之间的的齿部12为跨越齿121，定子100的绕线方法还包括：将过桥线22绕制于跨越齿121。
在一实施例中，将过桥线22绕制于跨越齿121的方法可以是：
将过桥线22在跨越齿121上环绕至少一圈。
例如，请参阅图3、图4与图9，以U相绕组为例：U1与U2、U2与U3以及U1与U3之间分别具有两个跨越齿，导线在完成U1线圈的绕制后，U1线圈的出线端在U1线圈与U2线圈之间的两个跨越齿上分别绕制至少一圈，而后向U2线圈所在的齿部12进行U2线圈的绕制，当完成U2线圈的绕制后，U2线圈的出线端在U2线圈与U3线圈之间的两个跨越齿上分别绕制至少一圈，直至完成U3线圈的绕制，同理，继续完成V相绕组以及W相绕组。
可选地，在本实施方式中，过桥线22的卷绕方向与各个绕组中线圈21的卷绕方向相同。通过该种设置方式，有利于形成相同方向的电流。在本实施例中，可以按逆时针卷绕形成线圈21，也可以按顺时针方向卷绕形成线圈21。
在另一实施例中，齿部12包括第一表面12a和与第一表面12a相对的第二表面12b，将过桥线22绕制于跨越齿121包括：同一相绕组中第一个绕制完成的线圈的出线端211沿第一表面12a侧向第二表面12b侧弯折延伸，绕过跨越齿121的第二表面12b侧后向第一表面12a侧弯折延伸形成过桥线22，并连接另一个线圈的第一表面12a侧进行线圈绕制；或者，同一相绕组中第一个绕制完成的线圈的出线端211沿第二表面12b侧向第一表面12a侧弯折延伸形成过桥线22，绕过跨越齿121的第一表面12a侧后向第二表面12b侧弯折延伸并连接另一个线圈的第二表面12b侧进行线圈绕制。
例如，请参阅图5、图6与图9，导线在完成U1线圈的绕制后，U1线圈的出线端211沿U1线圈的第一表面12a侧伸出后向U1线圈与U2线圈之间跨越齿的第二表面12b侧延伸，绕过跨越齿121的第二表面12b侧后连接U2线圈的第一表面12a侧，而后开始进行U2线圈的绕制，在U2线圈完成绕制后，U2线圈的出线端211沿U2线圈的第一表面12a侧伸出后向U2线圈与U3线圈之间跨越齿的第二表面12b侧延伸，绕过跨越齿121的第二表面12b侧后连接U3线圈的第一表面12a侧，而后开始进行U3线圈的绕制，直至完成U3线圈的绕制，同理，继续完成V相绕组以及W相绕组。
或者，导线在完成U1线圈的绕制后，U1线圈的出线端211沿U1线圈的第二表面12b侧伸出后向U1线圈与U2线圈之间跨越齿的第一表面12a侧延伸，绕过跨越齿121的第一表面12a侧后连接U2线圈的第二表面12b侧，而后开始进行U2线圈的绕制，在U2线圈完成绕制后，U2线圈的出线端211沿U2线圈的第二表面12b侧伸出后向U2线圈与U3线圈之间跨越齿的第一表面12a侧延伸，绕过跨越齿121的第一表面12a侧后连接U3线圈的第二表面12b侧，而后开始进行U3线圈的绕制，直至完成U3线圈的绕制，同理，继续完成V相绕组以及W相绕组。
可以理解的是，线圈21由于缠绕在齿部12上，因此齿部12的第一表面12a和第二表面12b同样为线圈21的第一表面12a和第二表面12b。
在另一实施例中，跨越齿121包括至少两个，将过桥线22绕制于跨越齿121，包括：
将过桥线22在至少两个跨越齿121之间以往复弯折的方式绕制于跨越齿121。
例如，请参阅图7至图9，导线在完成U1线圈的绕制后，U1线圈的出线端211沿U1线圈的第二表面12b侧伸出后向U1线圈与U2线圈之间的第一个跨越齿的第一表面12a侧弯折，导线伸出第一个跨越齿后再向第二个跨越齿的第二表面侧12b方向弯折，而后导线沿U2线圈的第二表面12b侧连接并绕制U2线圈，在完成U2线圈的绕制后，U2线圈的出线端211沿U2线圈的第二表面12b侧伸出后向U2线圈与U3线圈之间的第一个跨越齿的第一表面12a侧弯折，导线伸出第一个跨越齿后再向第二个跨越齿的第二表面侧12b方向弯折，而后导线沿U3线圈的第二表面12b侧连接并绕制U3线圈，同理，继续完成V相绕组以及W相绕组。
或者，导线在完成U1线圈的绕制后，U1线圈的出线端211沿U1线圈的第一表面12a侧伸出后向U1线圈与U2线圈之间的第一个跨越齿的第二表面12b侧弯折，导线伸出第一个跨越齿后再向第二个跨越齿的第一表面侧12a方向弯折，而后导线沿U2线圈的第一表面12a连接并绕制U2线圈，在完成U2线圈的绕制后，U2线圈的出线端211沿U2线圈的第一表面12a侧伸出后向U2线圈与U3线圈之间的第一个跨越齿的第二表面12b侧弯折，导线伸出第一个跨越齿后再向第二个跨越齿的第一表面侧12a方向弯折，而后导线沿U3线圈的第一表面12a侧连接并绕制U3线圈，同理，继续完成V相绕组以及W相绕组。
采用上述技术方案后，在绕制两相以上的定子100时，一相线圈的全部子线圈绕制完成后通过辅助件继续进行第二相线圈的绕制，直至全部线圈绕制完成能够保证导线绷紧不散乱，各相线圈之间的导线无需用端子缠绕固定，节约了铁芯10厚度方向空间，同时减少了零件数量，简化铁芯结构，各个线圈之间通过过桥22由跨越齿121进行绷紧固定，过桥线22不再松散，提高了绕组绕线的可靠性，并且过桥线22只有局部设置在铁芯10的端面，减少了过桥线22对铁芯10端面区域的占用，从而有效地释放铁芯10端面区域，有利于提供工艺定位、支撑等，简化了工装。
请参阅图1至图9，本申请实施例还提供一种定子100，包括铁芯10和绕组20，铁芯10包括轭部11和多个环绕轭部11的齿部12和至少两相绕组20，每组齿部12绕制一相绕组，绕组20采用如下绕线方法绕制于铁芯10：
S01、提供辅助件200，所述辅助件200包括挂线部201；
S02、将导线绕制于其中一组齿部12，成型一相绕组；
S03、成型一相绕组后，将导线绕过挂线部201并绕制于另一组齿部12，成型另一相绕组。
例如，请参阅图2与图9，本实施例提供的定子为三相定子，铁芯包括九个齿部，九个齿部均分为第一组、第二组及第三组，绕组包括U相绕组、V相绕组及W相绕组，U相绕组绕制于第一组齿部，V相绕组绕制于第一组齿部，W相绕组绕制于第三组齿部。绕组在铁芯10上绕制时，将导线在第一组齿部的三个齿部依次缠绕形成U相绕组，完成U相绕组的缠绕后将导线绕过辅助件200的挂线部201，然后在第二组齿部的三个齿部依次缠绕形成V相绕组，在完成V相绕组的缠绕后继续将导线绕过辅助件200的挂线部201，然后在第三组齿部的三个齿部依次缠绕形成W相绕组。
具体地，请参阅图10，轭部11为具有中空内孔111的圆环状结构，轭部11包括朝向中空内孔111的内表面112和背对内表面112的外表面113，齿部12沿轭部11的周向凸设于外表面113，可以理解的是，齿部12沿轭部11的周向凸设于内表面112也是可以的。
本申请实施例提供的定子中，各相绕组之间处于绷紧状态，绕组不松散，而且，可以取消现有方案设置在轭部11上的绕线柱，从而可以减小铁芯的厚度，利于小尺寸设计，同时减少了零部件，降低成本。
应当说明的是，定子100不局限于是三相绕组，也可以是二相或三相以上的多相绕组。
还应当说明的是，定子可以对称三相定子或不对称三相定子，其中，对称三相定子指的每一组齿部的三个齿部呈120°夹角设置。可以理解地，不对称三相定子指的每一组齿部的三个齿部两两之间的夹角不为120°。
可选地，U相绕组、V相绕组及W相绕组的卷绕方向均相同。
为了便于理解，以下方案均以定子100为三相绕组为例进行说明，铁芯10包括九个齿部12，九个齿部12均分为第一组、第二组及第三组，绕组包括U相绕组、V相绕组及W相绕组，U相绕组绕制于第一组齿部，V相绕组绕制于第二组齿部，W相绕组绕制于第三组齿部，任意相邻的两个同一相齿部之间均具有两个跨越齿121。
请参阅图3、图4与图9，每一相绕组20包括线圈21和连接相邻两个线圈21的过桥线22，定义相邻两个线圈21之间的的齿部12为跨越齿121，定子100的过桥线22绕制于跨越齿121。
在一实施例中，过桥线22在跨越齿121上环绕至少一圈。
例如，请参阅图3、图4与图9，以U相绕组为例：U1与U2、U2与U3以及U1与U3之间分别具有两个跨越齿，U1线圈的出线端在U1线圈与U2线圈之间的两个跨越齿上分别绕制至少一圈以形成过桥线22，U2线圈的出线端在U2线圈与U3线圈之间的两个跨越齿上分别绕制至少一圈以形成过桥线22，V相绕组中的V1线圈与V2线圈以及V2线圈与V3线圈之间的过桥线22以及W相绕组的W1线圈与W2线圈以及W2线圈与W3线圈之间的过桥线22同理。
可选地，在本实施方式中，过桥线22的卷绕方向与各个绕组中线圈21的卷绕方向相同。通过该种设置方式，有利于形成相同方向的电流。在本实施例中，可以按逆时针卷绕形成线圈21，也可以按顺时针方向卷绕形成线圈21。
在另一实施例中，齿部12包括第一表面12a和与第一表面12a相对的第二表面12b，过桥线22包括依次连接的第一跨线段221、第二跨线段222和第三跨线段223，第二跨线段222沿第二表面12b延伸，第一跨线段221从第二跨线段222的一端朝向第一表面12a倾斜延伸至一个线圈21，第三跨线段223从第二跨线段222的另一端朝向第一表面12a倾斜延伸至另一个线圈21;或者，齿部12包括第一表面12a和与第一表面12a相对的第二表面12b，过桥线22包括依次连接的第一跨线段221、第二跨线段222和第三跨线段223，第二跨线段222沿第一表面12a延伸，第一跨线段221从第二跨线段222的一端朝向第二表面12b倾斜延伸至一个线圈21，第三跨线段223从第二跨线段222的另一端朝向第二表面12b倾斜延伸至另一个线圈21。
在另一实施例中，过桥线22还包括第三跨线段223向远离第一跨线段221延伸并连接于另一个线圈21的第四跨线段224。
例如，请参阅图5、图6与图9，以U相绕组为例，U1线圈的出线端211形成第一跨线段221，第二跨线段222沿U1线圈与U2线圈之间的跨越齿121的第二表面12b延伸，第一跨线段221从第二跨线段222的一端朝向第一表面12a倾斜延伸至U1线圈，第三跨线段223从第二跨线段222的另一端朝向第一表面12a倾斜延伸形成第四跨线段连接至U2线圈，V相绕组中的V1线圈与V2线圈以及V2线圈与V3线圈之间的过桥线以及W相绕组的W1线圈与W2线圈以及W2线圈与W3线圈之间的过桥线同理。
或者，U1线圈的出线端211形成第一跨线段221，第二跨线段222沿第一表面12a延伸，第一跨线段221从第二跨线段222的一端朝向第二表面12b倾斜延伸至U1线圈，第三跨线段223从第二跨线段222的另一端朝向第二表面12b倾斜延伸至U2线圈，V相绕组中的V1线圈与V2线圈以及V2线圈与V3线圈之间的过桥线以及W相绕组的W1线圈与W2线圈以及W2线圈与W3线圈之间的过桥线同理。
可以理解的是，线圈21由于缠绕在齿部12上，因此齿部12的第一表面12a和第二表面12b同样为线圈21的第一表面12a和第二表面12b。
在另一实施例中，定子的跨越齿121包括至少两个，过桥线22在至少两个跨越齿121之间以往复弯折的方式绕制于跨越齿121。
例如，请参阅图7至图9，以U相绕组为例，U1线圈与U2之间的过桥线为U1线圈的出线端211沿U1线圈的第二表面12b侧伸出后向U1线圈与U2线圈之间的第一个跨越齿的第一表面12a侧弯折形成过桥线的第一跨线段221，导线在第一个跨越齿的第一表面12a延伸形成过桥线的第二跨线段222，之后再向第二个跨越齿的第二表面侧12b方向弯折形成过桥线的第三跨线段223，而第三跨线段223沿U2线圈的第二表面12b向远离第一跨线段221延伸并连接U2线圈形成过桥线的第四跨线段224，而后绕制U2线圈，U2线圈的出线端211沿U2线圈的第二表面12b侧伸出后向U2线圈与U3线圈之间的第一个跨越齿的第一表面12a侧弯折，导线伸出第一个跨越齿后再向第二个跨越齿的第二表面侧12b方向弯折，而后导线沿U3线圈的第二表面12b侧连接U3线圈，V相绕组中的V1线圈与V2线圈以及V2线圈与V3线圈之间的过桥线以及W相绕组的W1线圈与W2线圈以及W2线圈与W3线圈之间的过桥线同理。
或者，U1线圈与U2之间的过桥线为U1线圈的出线端211沿U1线圈的第一表面12a侧伸出后向U1线圈与U2线圈之间的第一个跨越齿的第二表面12b侧弯折，导线伸出第一个跨越齿后再向第二个跨越齿的第一表面侧12a方向弯折，而后导线沿U2线圈的第一表面12a连接U2线圈，U2线圈的出线端211沿U2线圈的第一表面12a侧伸出后向U2线圈与U3线圈之间的第一个跨越齿的第二表面12b侧弯折，导线伸出第一个跨越齿后再向第二个跨越齿的第一表面侧12a方向弯折，而后导线沿U3线圈的第一表面12a侧连接U3线圈，V相绕组中的V1线圈与V2线圈以及V2线圈与V3线圈之间的过桥线以及W相绕组的W1线圈与W2线圈以及W2线圈与W3线圈之间的过桥线同理。
本申请实施例提供的定子，通过将过桥线绕制于跨越齿上，无需使用端子固定过桥线，不会占用轭部的端面区域，从而释放该区域，以便提供工艺定位、支撑等，简化了工装。
请参阅图11至图13，本申请实施例还提供一种微型水泵300，包括泵体301、叶轮302、转子303以及采用本申请实施例提供一种定子的绕线方法绕制的定子100，泵体301具有内腔3011、连通内腔3011的进液口3012及连通内腔3011的出液口3013，泵体301设有转轴3014，叶轮302设于内腔3011内并与转轴3014转动连接，转子303安装于叶轮302，定子100安装于泵体301，定子100用于驱动转子303转动。
运行时，给定子100通交流电，根据电磁感应原理，定子100产生旋转磁场，转子303在旋转磁场中受安培力的作用发生旋转，旋转的转子303带动叶轮302旋转。液体从进液口3012进入内腔3011，在叶轮302的推动下高速旋转并做离心运动，液体到达出液口3013时从出液口3013甩出，液体被甩出后，内腔3011中的压强减小，远小于大气压力，外界的流体在大气压强的作用下从进液口3012补充进内腔3011中，重复地实现上述的动作，实现液体的输送。
以上所述仅是本申请的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本申请创造构思的前提下，还可以做出改进，但这些均属于本申请的保护范围。

Claims (11)

  1. 一种定子的绕线方法，所述定子包括铁芯和绕组，所述铁芯包括轭部和多个环绕所述轭部的齿部，多个所述齿部分为至少两组，所述绕组缠绕于所述齿部，其特征在于，所述绕线方法包括：
    提供辅助件，所述辅助件包括挂线部；
    将导线绕制于其中一组所述齿部，成型一相绕组；
    成型所述一相绕组后，将所述导线绕过所述挂线部并绕制于另一组所述齿部，成型另一相绕组。
  2. 根据权利要求1所述的绕线方法，其特征在于，每一相所述绕组包括线圈和连接相邻两个所述线圈的过桥线，定义相邻两个所述线圈之间的的所述齿部为跨越齿，所述绕线方法还包括：
    将所述过桥线绕制于所述跨越齿。
  3. 根据权利要求2所述的绕线方法，其特征在于，所述将所述过桥线绕制于所述跨越齿，包括：
    将所述过桥线在所述跨越齿上环绕至少一圈。
  4. 据权利要求2所述的绕线方法，其特征在于，所述齿部包括第一表面和与所述第一表面相对的第二表面，所述将所述过桥线绕制于所述跨越齿，包括：
    所述过桥线从其中一个所述线圈的第一表面侧向所述第二表面侧弯折延伸，绕过所述跨越齿的第二表面侧后向所述第一表面侧弯折延伸并连接另一个所述线圈的第一表面侧；或者，
    所述过桥线从其中一个所述线圈的第二表面侧向所述第一表面侧弯折延伸，绕过所述跨越齿的第一表面侧后向所述第二表面侧弯折延伸并连接另一个所述线圈的第二表面侧。
  5. 根据权利要求2所述的绕线方法，其特征在于，所述跨越齿包括至少两个，所述将所述过桥线绕制于所述跨越齿，包括：
    将所述过桥线在所述至少两个跨越齿之间以往复弯折的方式绕制于所述跨越齿。
  6. 一种定子，包括铁芯和至少两相绕组，所述铁芯包括轭部、多个齿部，所述多个齿部环绕所述轭部间隔设置，所述多个齿部分成至少两组，每组所述齿部绕制一相绕组，其特征在于，所述绕组采用如权利要求1所述的绕线方法绕制于所述齿部。
  7. 根据权利要求6所述的定子，其特征在于，每一相所述绕组包括线圈和连接相邻两个所述线圈的过桥线，定义相邻两个所述线圈之间的所述齿部为跨越齿，所述过桥线绕制于所述跨越齿。
  8. 根据权利要求7所述的定子，其特征在于，所述齿部包括第一表面和与所述第一表面相对的第二表面，所述过桥线包括依次连接的第一跨线段、第二跨线段和第三跨线段，所述第二跨线段沿所述第二表面延伸，所述第一跨线段从所述第二跨线段的一端朝向所述第一表面倾斜延伸至一个所述线圈，所述第三跨线段从所述第二跨线段的另一端朝向所述第一表面倾斜延伸；或者，
    所述第二跨线段沿所述第一表面延伸，所述第一跨线段从所述第二跨线段的一端朝向所述第二表面倾斜延伸至一个所述线圈，所述第三跨线段从所述第二跨线段的另一端朝向所述第二表面倾斜延伸。
  9. 根据权利要求8所述的定子，其特征在于，所述过桥线还包括自所述第三跨线段向远离所述第一跨线段延伸并连接于所述绕组的另一个所述线圈的第四跨线段。
  10. 根据权利要求7所述的定子，其特征在于，所述跨越齿的数量为至少两个，所述过桥线在所述至少两个跨越齿之间以往复弯折的方式绕制于所述跨越齿。
  11. 一种微型水泵，其特征在于，包括泵体、叶轮、转子及权利要求6至10任一项所述的定子，所述泵体具有内腔、连通所述内腔的进液口及连通所述内腔的出液口，所述泵体设有转轴，所述叶轮设于所述内腔内并与所述转轴转动连接，所述转子安装于所述叶轮，所述定子安装于所述泵体，所述定子用于驱动所述转子转动。
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