CN217486262U - Stator and motor - Google Patents

Abstract

The utility model provides a stator and a motor, wherein the stator comprises an insulating framework, a stator core and a conductive piece; the stator core is arranged on the insulating framework and comprises a first phase core, a second phase core and a third phase core; the stator winding comprises a first phase winding unit, a second phase winding unit and a third winding unit; the conductive pieces are arranged on the insulating framework and comprise a first conductive piece, a second conductive piece, a third conductive piece and a public conductive piece, the first conductive piece, the second conductive piece and the third conductive piece are respectively provided with three different-phase line head conductive pieces, and the public conductive piece is provided with three different-phase line tail conductive pieces; continuously winding an enameled wire to form a first phase winding unit, a second phase winding unit and a second phase winding unit; the structure of the wiring device is simplified, the winding process is optimized, the winding taps can be electrically connected without polishing, and the winding efficiency is improved; the problems that a wiring device in the prior art is complex in structure, low in winding efficiency and the like are solved.

Description

Stator and motor

Technical Field

The utility model belongs to the technical field of the motor, especially, relate to a stator and motor.

Background

The outer rotor motor with the rotor inside the outer stator has the advantages of low noise, high operation efficiency, good speed regulation performance, long service life and the like, so that the outer rotor motor has great market prospect in high-power application; however, the operation space of the existing stator structure is small, wiring is not easy, and the following problems exist in the winding aspect of the stator winding: firstly, the in-phase single winding is wound and then is connected in series, so that more winding joints are caused, the phase splitting is difficult, an operator is easy to connect wrong wires, the steps are more, and the time consumption is long; for an outer rotor motor with large power requirement, the operation is more difficult if the outer diameter of the stator is relatively large and the cross slot is far; secondly, the tapped line of the winding is directly connected with the power line, the process is complicated, and the problem of unreliable electric connection is easily caused; and the gap bridge wire of the winding is in the same wire passing groove, so that the quality risk of cross-phase short circuit exists.

Disclosure of Invention

In view of this, the utility model provides a stator and motor to solve among the prior art winding connect more, the operator easily connect the wrong line, the winding process is numerous and diverse and the inefficiency scheduling problem.

The utility model provides a stator, which comprises an insulating framework, a stator core, a stator winding and a conductive piece, wherein the stator core is arranged on the insulating framework and comprises a first phase core and a second phase core; the stator winding comprises a first phase winding unit formed by winding the same enameled wire on the first phase iron core and a second phase winding unit formed by winding the same enameled wire on the second phase iron core in sequence;

the conductive pieces are arranged on the insulating framework and comprise a first conductive piece, a second conductive piece and a public conductive piece, the first conductive piece is provided with a first phase line head conductive piece, the second conductive piece is provided with a second phase line head conductive piece, and the public conductive piece is provided with a first phase line tail conductive piece and a second phase line tail conductive piece; the first phase line head conducting strip, the second phase line head conducting strip, the first phase line tail conducting strip and the second phase line tail conducting strip form piercing teeth;

the first phase line head conducting strip, the first phase iron core and the first phase line tail conducting strip are correspondingly arranged; the second phase line head conducting plate, the second phase iron core and the second phase line tail conducting plate are correspondingly arranged;

winding a first part of an enameled wire on the piercing tooth of the first phase wire head conducting strip, the first phase iron core and the piercing tooth of the first phase wire tail conducting strip in sequence to form a first phase winding unit; and continuously winding the second part of the enameled wire on the piercing teeth of the second phase wire head conducting strip, the second phase iron core unit and the piercing teeth of the second phase wire tail conducting strip in sequence to form a second phase winding unit.

Further optionally, the stator core further comprises a third phase core; the stator winding further comprises a third phase winding unit wound on the third phase core; the stator winding also comprises a third phase winding unit wound on the third phase iron core, and the third phase winding unit is formed by continuously winding the enameled wire on the third phase iron core after the second phase winding unit is wound;

the conductive pieces also comprise a third conductive piece, a third phase wire head conductive piece is formed on the third conductive piece, and a third phase wire tail conductive piece is formed on the public conductive piece; the third phase wire head conducting strip and the third phase wire tail conducting strip form piercing teeth; the third phase line head conducting plate, the third phase iron core and the third phase line tail conducting plate are correspondingly arranged.

Further optionally, the first conductive member, the second conductive member, the third conductive member and the common conductive member form a wire barrel by injection molding.

Further optionally, the insulating framework comprises an upper framework, and the upper framework is formed with an installation groove and a first limiting part; a second limiting part is formed at one end of the wiring barrel; one end of the wiring barrel is arranged in the mounting groove, and is fixed on the upper framework through the matching of the first limiting part and the second limiting part.

Further optionally, the first conductive member, the second conductive member, the third conductive member and the common conductive member are all arc structures, and the first conductive member, the second conductive member, the third conductive member and the common conductive member are arranged along a radial direction and/or an axial direction of the wire connecting cylinder in a staggered manner.

Further optionally, in the first conductive member, the second conductive member, and the third conductive member, two corresponding phase line head conductive sheets are formed along a circumferential direction of each conductive member, and the two corresponding phase line head conductive sheets are located on the same diameter;

two first phase line tail conducting strips, two second phase line tail conducting strips and two third phase line tail conducting strips are formed along the public conducting piece, the two same phase line tail conducting strips are located on the same diameter, and the first phase line tail conducting strips, the second phase line tail conducting strips and the third phase line tail conducting strips are arranged at intervals.

Further optionally, the first phase line head conducting strip, the second phase line head conducting strip, the third phase line head conducting strip, the first phase line tail conducting strip, the second phase line tail conducting strip and the third phase line tail conducting strip all extend along the radial direction of the conducting pieces where the first phase line head conducting strip, the second phase line tail conducting strip and the third phase line tail conducting strip are located, and the conducting strips are arranged in a staggered mode along the circumferential direction of the wiring barrel.

Further optionally, each of the first, second, and third conductive members is formed with a corresponding conductive strip, and the conductive strip is disposed at an interval from the line head conductive strip of the respective conductive member and extends along the axial direction of the respective conductive member.

The utility model also provides a winding method of the stator, the stator comprises an insulating framework, a stator core, a stator winding and a conductive piece, and the stator core is arranged on the insulating framework and comprises a first phase core and a second phase core; the stator winding comprises a first phase winding unit formed by winding the first phase iron core and a second phase winding unit formed by winding the second phase iron core;

the conductive pieces are arranged on the insulating framework and comprise a first conductive piece, a second conductive piece and a public conductive piece, the first conductive piece is provided with a first phase line head conductive piece, the second conductive piece is provided with a second phase line head conductive piece, and the public conductive piece is provided with a first phase line tail conductive piece and a second phase line tail conductive piece; the first phase line head conducting strip, the second phase line head conducting strip, the first phase line tail conducting strip and the second phase line tail conducting strip form piercing teeth;

the first phase line head conducting plate, the first phase iron core and the first phase line tail conducting plate are correspondingly arranged; the second phase line head conducting plate, the second phase iron core and the second phase line tail conducting plate are correspondingly arranged;

the winding method comprises the following steps:

winding an enameled wire on the piercing teeth of the first phase lead conducting strip, the first phase iron core and the piercing teeth of the first phase tail conducting strip to form a first phase winding unit;

and after the winding of the first phase winding unit is finished, continuously winding the rest part of the enameled wire on the piercing teeth of the second phase wire head conducting strip, the second phase iron core unit and the piercing teeth of the second phase wire tail conducting strip to form a second phase winding unit.

Further optionally, the stator core further includes a third phase core, and the stator winding further includes a third phase winding unit wound around the third phase core;

after winding the second phase winding unit, continuously winding the rest part of the enameled wire on the piercing teeth of the third phase wire head conducting strip, the third phase iron core unit and the piercing teeth of the third phase wire tail conducting strip to form a third phase winding unit;

after winding is finished, bridge wires among the first phase winding units are cut off, and then the first phase winding units are connected in parallel to form a first phase winding; cutting off bridge wires among the second phase winding units, and connecting the second phase winding units in parallel to form a second phase winding; cutting off the gap bridge wire between the third phase winding units, and connecting the plurality of third phase winding units in parallel to form a third phase winding; and cutting off a gap bridge wire between the first phase winding unit and the second phase winding unit, and cutting off a gap bridge wire between the second phase winding unit and the third phase winding unit, wherein the first phase winding, the second phase winding and the third phase winding form the stator winding.

The utility model also provides a motor, the motor include above-mentioned any the stator or adopt above-mentioned any the winding method of stator.

Compared with the prior art, the beneficial effects of the utility model mainly lie in:

(1) continuously winding an enameled wire to form a first phase winding unit, a second phase winding unit and a third phase winding unit; the structure of the wiring device is simplified, the winding process is optimized, and the winding efficiency is improved; the problems that a wiring device in the prior art is complex in structure, complex in winding process, low in efficiency and the like are solved;

(2) the wire head conducting strip and the wire tail conducting strip are electrically connected with taps of the corresponding phase winding units through the puncture teeth; the winding taps can be electrically connected without polishing, the electrical connection is rapid and reliable, the electrical connection process is simplified, the problem of complex polishing and soldering processes is solved, and the potential quality hazards of insufficient polishing, insufficient soldering and the like are avoided; the first phase conducting bar, the second phase conducting bar and the third phase conducting bar are respectively externally connected with corresponding power lines, so that the problem that a winding tap is directly connected with the power lines and is easy to loosen is solved; the gap bridge wire is eliminated, so that the problem that the gap bridge wire between different phases is complicated and easily causes short circuit is avoided; the cable is clear in layer and attractive in wiring, winding steps are reduced, and operation time is saved;

(3) the first conductive piece, the second conductive piece, the third conductive piece and the public conductive piece are arranged at intervals and are plastically packaged together to form the wiring cylinder, the insulating effect among the conductive pieces is good, the problem of short circuit among different phases is avoided, materials such as insulating tapes, insulating sleeves and the like are not needed, the cost is low, the wiring cylinder and the conductive pieces can be subjected to injection molding in advance, and the winding efficiency is improved; one end of the wiring barrel is fixed on the upper framework through the matching of the first limiting part and the second limiting part and the matching of the first fixing part and the second fixing part, so that the structure is simple and the fixing is reliable;

(4) continuously winding an enameled wire on a corresponding phase head conducting strip, a corresponding phase iron core and a corresponding phase tail conducting strip to form a first phase winding unit and a second phase winding unit; then, bridge wires between the same-phase winding units and between different-phase winding units are cut off, and the winding-wiring process of the traditional process can be completed; the winding process has no broken wire, the problem of more winding taps is avoided, the identification is clear, the winding process is optimized, the wiring is simple and rapid, the error rate of winding is reduced, and the winding efficiency is improved; the problems that in the prior art, the number of winding joints is large, an operator is easy to connect wrong wires, winding procedures are complicated, efficiency is low and the like are solved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structure, proportion, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and the modification of any structure, the change of proportion relation or the adjustment of size all fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the purpose which can be achieved by the present invention.

Fig. 1a is a schematic structural view of an embodiment of the plastic package of the conductive component on the wire connecting cylinder provided by the present invention;

FIGS. 1b and 1c are enlarged views at II in FIG. 1 a;

fig. 2a is a schematic structural diagram of an embodiment of a first conductive member provided by the present invention;

fig. 2b is a schematic structural diagram of an embodiment of the second conductive member provided by the present invention;

fig. 2c is a schematic structural diagram of an embodiment of a third conductive member provided in the present invention;

fig. 2d is a schematic structural diagram of an embodiment of the common conductive member provided by the present invention;

fig. 2e is a schematic structural diagram of a conductive device according to an embodiment of the present invention;

fig. 3 is a schematic flow chart of an embodiment of a winding method for a stator according to the present invention;

fig. 4a and 4b are schematic diagrams illustrating the winding principle of the stator winding provided by the present invention;

fig. 5a and 5b are schematic structural diagrams of an embodiment of a stator provided by the present invention;

fig. 6 is a schematic structural view of an embodiment of the upper frame provided by the present invention;

in the figure:

11-upper framework; 111-mounting grooves; 112-a first limit portion; 113-a first fixed part; 12-lower skeleton; 13-a stator core; 14-a stator winding; 15-a wire connecting cylinder; 151-second limiting part; 152-a second fixed part; 153-a positioning slot; 161-U phase power supply line; 162-V phase power line; 163-W phase power supply line;

2-a conductive member; 21-a first conductive member; 211-U phase conducting bar; 22-a second electrically conductive member; 221-V phase conductive strip; 23-a third conductive member; 231-W phase conductive strips; 24-a common conductive member; 25-piercing the teeth.

Detailed Description

The present invention is described in detail with reference to the specific embodiments, and other advantages and effects of the present invention will be apparent to those skilled in the art from the disclosure herein. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the embodiments of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, and "a plurality" typically includes at least two, but does not exclude the presence of at least one.

It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a commodity or system that includes the element.

In the existing external rotor motor, the process of winding the stator winding mainly comprises the following steps: winding a stator winding on a stator core, polishing a wire head and a wire tail of the stator winding, splitting phases, sleeving small sleeves (used for distinguishing taps) with different colors on each wire head and each wire tail, sleeving an insulating sheath, wiring in a framework wire groove according to a wiring diagram, externally connecting a power wire and a winding wire head, soldering tin at a wiring position, wrapping adhesive paper at a welding opening, sleeving the insulating sheath, and leading out wires from the wire groove; the stator structure has small operation space, difficult wiring, complicated working procedure process, long time consumption, more winding joints, easy error splitting and difficult distinguishing; the tapped line of the winding is not reliably electrically connected with the power line, so that the quality risk of cross-phase short circuit exists;

the utility model creatively provides a stator, which comprises an insulating framework, a stator core and a conductive piece; the stator core is arranged on the insulating framework and comprises a first phase core and a second phase core; the stator winding comprises a first phase winding unit and a second phase winding unit; the conductive piece is arranged on the insulating framework and comprises a first conductive piece, a second conductive piece and a public conductive piece, wherein the first conductive piece and the second conductive piece are respectively provided with two different-phase line head conductive pieces, and the public conductive piece is provided with two different-phase line tail conductive pieces; continuously winding an enameled wire to form a first phase winding unit and a second phase winding unit;

the structure of the wiring device is simplified, the winding process is optimized, the wiring is simple and rapid, errors are not easy to occur, and the winding efficiency is improved; the problems that a wiring device in the prior art is complex in structure, complex in winding process, low in efficiency and the like are solved, and the problems that in the prior art, the number of winding joints is large and an operator is prone to wire connection and wire error are solved.

< stator >

As shown in fig. 1a, 5a and 5b, the present embodiment further provides a stator, where the stator includes an insulating framework, a stator core 13, a stator winding 14 and a conductive member 2, and the stator core 13 is disposed on the insulating framework and includes a U-phase core, a V-phase core and a W-phase core; the stator winding 14 comprises a U-phase winding unit formed by winding the same enameled wire on a U-phase iron core, a V-phase winding unit formed by winding the same enameled wire on a V-phase iron core and a W-phase winding unit formed by winding the same enameled wire on a W-phase iron core in sequence;

the conductive piece 2 is arranged on the insulating framework and comprises a first conductive piece 21, a second conductive piece 22, a third conductive piece 23 and a public conductive piece 24, wherein a U-phase line head conductive piece is formed on the first conductive piece 21, a V-phase line head conductive piece is formed on the second conductive piece 22, a W-phase line head conductive piece is formed on the third conductive piece 23, and a U-phase line tail conductive piece, a V-phase line tail conductive piece and a W-phase line tail conductive piece are formed on the public conductive piece 24; the U-phase wire head conducting strip, the V-phase wire head conducting strip, the W-phase wire head conducting strip, the U-phase wire tail conducting strip, the V-phase wire tail conducting strip and the W-phase wire tail conducting strip form puncture teeth 25;

the U-phase line head conducting plate, the U-phase iron core and the U-phase line tail conducting plate are correspondingly arranged; the V-phase line head conducting plate, the V-phase iron core and the V-phase line tail conducting plate are correspondingly arranged; the W-phase line head conducting plate, the W-phase iron core and the W-phase line tail conducting plate are correspondingly arranged;

winding a first part of an enameled wire on the puncture tooth of the U-phase line head conducting strip, the U-phase iron core and the puncture tooth of the U-phase line tail conducting strip in sequence to form a U-phase winding unit;

after the winding of the U-phase winding unit is finished, continuously winding the second part of the enameled wire on the piercing tooth of the V-phase line head conducting strip, the V-phase iron core unit and the piercing tooth of the V-phase line tail conducting strip in sequence to form a V-phase winding unit;

after the winding of the V-phase winding unit is finished, continuously winding the third part of the enameled wire on the piercing teeth of the W-phase lead conducting strip, the W-phase iron core unit and the piercing teeth of the W-phase tail conducting strip in sequence to form a W-phase winding unit;

in summary, a first phase winding unit, a second phase winding unit and a third phase winding unit are formed by continuously winding an enameled wire; the structure of the wiring device is simplified, the winding process is optimized, and the winding efficiency is improved; the problems that a wiring device in the prior art is complex in structure, complex in winding process, low in efficiency and the like are solved; the wire head conducting strip and the wire tail conducting strip are electrically connected with taps of the corresponding phase winding units through the puncture teeth; the winding tap can realize electric connection without polishing, the electric connection is rapid and reliable, the electric connection process is simplified, the problem of complex polishing and soldering processes is solved, and the quality hidden troubles of incomplete polishing, insufficient soldering and the like are avoided.

In order to solve the problem of unreliable insulation among the conductive members, the present embodiment proposes that the first conductive member 21, the second conductive member 22, the third conductive member 23 and the common conductive member 24 form a wire barrel 15 by injection molding; the first conductive member 21, the second conductive member 22, the third conductive member 23, and the common conductive member 24 are arranged alternately in the radial direction and the axial direction of the wire barrel 15; the conductive pieces 2 have good insulation effect, the problem of short circuit between different phases is avoided, materials such as an insulating tape and an insulating sleeve are not needed, the cost is low, the wire connecting cylinder 15 and the conductive pieces 2 can be subjected to injection molding in advance, and the winding efficiency is improved;

further, as shown in fig. 1a, 1b, 1c and 6, the insulating bobbin includes an upper bobbin 11 and a lower bobbin 12, and the stator core 13 is disposed between the upper bobbin 11 and the lower bobbin 12; the upper frame 11 is formed with a corresponding mounting groove 111, a first limiting part 112 and a first fixing part 113; a second limiting part 151 and a second fixing part 152 which are correspondingly arranged are formed at one end of the wiring cylinder 15; specifically, the first limiting portion 112 is a limiting groove, and the second limiting portion 151 is a limiting boss; the first fixing portion 113 and the second fixing portion 152 are both screw holes;

one end of the wire connecting cylinder 15 is arranged in the mounting groove 111, the wire connecting cylinder 15 is in interference fit with the mounting groove 111, the axis of the wire connecting cylinder 15 is positioned, the circumferential limiting of the wire connecting cylinder 15 is realized through the matching of the first limiting part 112 and the second limiting part 151, the first fixing part 113 and the second fixing part 152 are matched, and the wire connecting cylinder 15 is fixed on the upper framework 11 through screws; the upper framework 11 is also provided with a positioning boss 114, the wiring barrel 15 is provided with a positioning groove 153, and the positioning boss 114 is matched with the positioning groove 153 to realize the positioning of the upper framework 11 and the wiring barrel 15; simple structure and reliable fixation.

Further, the wire connecting cylinder 15 is in a circular ring structure, and the first conductive member 21, the second conductive member 22, the third conductive member 23 and the common conductive member 24 are all in a circular arc structure, so that unnecessary materials are saved;

as shown in fig. 2a and 2e, the first conductive member 21 is formed with a conductive sheet a, a conductive sheet g and a U-phase conductive strip 211 arranged at intervals along the circumferential direction of the first conductive member 21, and the conductive sheets a and g are located on the same diameter of the first conductive member 21; the conducting strip a and the conducting strip g both extend along the radial direction of the first conductive piece 21, the U-phase conducting strip 211 extends along the axial direction of the first conductive piece 21, and the conducting strip a, the conducting strip g and the U-phase conducting strip 211 all protrude out of the wiring barrel 15;

as shown in fig. 2b and fig. 2e, the second conductive member 22 is formed with conductive sheets k, conductive sheets e and V-phase conductive strips 221 arranged at intervals along the circumferential direction of the second conductive member 22, and the conductive sheets k and the conductive sheets e are located on the same diameter of the second conductive member 22; the conducting strip k and the conducting strip e both extend along the radial direction of the second conducting piece 22, the V-phase conducting strip 221 extends along the axial direction of the second conducting piece 22, and the conducting strip k, the conducting strip e and the V-phase conducting strip 221 all protrude out of the wiring barrel 15;

as shown in fig. 2c and 2e, the third conductive member 23 is formed with a conductive sheet i, a conductive sheet c and a W-phase conductive strip 231 arranged at intervals along the circumferential direction of the third conductive member 23, and the conductive sheet i and the conductive sheet c are located on the same diameter of the third conductive member 23; the conducting strip i and the conducting strip c extend along the radial direction of the W-phase line head conducting piece, the W-phase conducting strip extends along the axial direction of the W-phase line head conducting piece, and the conducting strip i, the conducting strip c and the W-phase conducting strip all protrude out of the wiring barrel 15;

as shown in fig. 2d and 2e, the common conductive member 24 is formed with a conductive sheet b, a conductive sheet d, a conductive sheet f, a conductive sheet h, a conductive sheet j and a conductive sheet l at intervals along the circumferential direction of the common conductive member 24; the conducting strips b, d, f, h, j and l all extend along the radial direction of the common conducting strip 24 and all protrude out of the wire barrel 15.

Preferably, as shown in fig. 2e, the conductive sheets a to l are staggered along the circumference of the wire barrel 15.

Further, as shown in fig. 2e and 4a, the stator winding 14 includes a U-phase winding, a V-phase winding, and a W-phase winding; the U-phase winding comprises windings U1-U4, the V-phase winding comprises windings V1-V4, the W-phase winding comprises windings W1-W4, and the arrangement sequence on the stator iron core 13 is as follows: u1, W4, W3, V4, V3, U4, U3, W2, W1, V2, V1, U2; the stator core 13 includes twelve stator cores a to L arranged in sequence in the counterclockwise direction; the conducting sheets a to L are arranged corresponding to the stator cores A to L one by one, and puncture teeth 25 are formed on the conducting sheets a to L;

when the U-phase winding, the V-phase winding and the W-phase winding are wound on the corresponding stator cores 13, the wire ends of the windings U1 are wound on the conductive sheets a and electrically connected with the conductive sheets a through the corresponding piercing teeth 25; the tail of the winding U2 is wound on the conducting strip l and is electrically connected with the conducting strip l through the corresponding puncture tooth 25; the wire end of the winding U3 is wound on the conducting strip g and is electrically connected with the conducting strip g through the corresponding puncture tooth 25; the tail of the winding U4 is wound on the conducting sheet f and is electrically connected with the conducting sheet f through the corresponding puncture tooth 25; the U-phase conductive strip 211 is externally connected with a U-phase power line 161;

the wire end of the winding V1 is wound on the conducting sheet k and is electrically connected with the conducting sheet k through the corresponding puncture tooth 25; the tail of the winding V2 is wound on the conducting strip j and is electrically connected with the conducting strip j through the corresponding puncture tooth 25; the wire end of the winding V3 is wound on the conducting sheet e and is electrically connected with the conducting sheet e through the corresponding puncture tooth 25; the tail of the winding V4 is wound on the conducting strip d and is electrically connected with the conducting strip d through the corresponding puncture tooth 25; the V-phase conductive strip 221 is externally connected with a V-phase power line 162;

the wire end of the winding W1 is wound on the conducting strip i and is electrically connected with the conducting strip i through the corresponding puncture tooth 25; winding the wire tail of the winding W2 on the conducting strip h and electrically connecting the wire tail with the conducting strip h through the corresponding puncture tooth 25; the wire end of the winding W3 is wound on the conducting sheet c and is electrically connected with the conducting sheet c through the corresponding puncture tooth 25; the tail of the winding W4 is wound on the conducting strip b and is electrically connected with the conducting strip b through the corresponding puncture tooth 25; the W-phase conductive strip 231 is externally connected with a W-phase power supply line 163;

it should be noted that the number of the conductive members, the number of conductive sheets formed by the first conductive member 21, the second conductive member 22, the third conductive member 23 and the common conductive member 24, the number of the same-phase windings in the U-phase winding, the V-phase winding and the W-phase winding, and the number of the stator cores 13 are not limited, and may be set according to actual needs.

The embodiment has obvious advantages that one end of the wiring barrel 15 is plastically packaged with the first conductive piece 21, the second conductive piece 22, the third conductive piece 23 and the common conductive piece 24, so that preprocessing injection molding can be completed in advance, and the productivity efficiency of stator production is improved; the stator assembly sequence is as follows: the pre-processing of the wiring cylinder 15 and the conductive piece is completed in advance, a stator core 13 is sleeved between the upper framework 11 and the lower framework 12, the wiring cylinder 15 is arranged on the upper framework 11, and the winding is completed according to the explained winding method of the stator winding 14, so that the stator assembly is completed; the structure is simple, phase splitting and winding are not needed, a wire separating color sleeve is not needed, an insulating sleeve is not needed, and a wire skin is not needed to be polished; the cable has the advantages of clear layers, attractive wiring, no possibility of connecting wrong cables, staggered distribution of the conductive parts, and good insulating property and safety.

< winding method >

As shown in fig. 3, the present embodiment provides a winding method for a stator, wherein the stator is the above-mentioned stator;

the winding method comprises the following steps:

s1, winding the first part of an enameled wire on the piercing tooth of the U-phase lead conducting strip, the U-phase iron core and the piercing tooth of the U-phase tail conducting strip in sequence to form a U-phase winding unit;

s2, after the winding of the V-phase winding unit is finished, continuously winding the second part of the enameled wire on the piercing tooth of the V-phase line head conducting strip, the V-phase iron core and the piercing tooth of the V-phase line tail conducting strip in sequence to form the V-phase winding unit;

s3, after the winding of the V-phase winding unit is finished, continuously winding the third part of the enameled wire on the piercing tooth of the W-phase lead conducting strip, the W-phase iron core and the piercing tooth of the W-phase tail conducting strip in sequence to form a W-phase winding unit;

s4, after winding is finished, bridge wires among the U-phase winding units are cut off, and the U-phase winding units are connected in parallel to form the U-phase winding; cutting off the bridge wires among the V-phase winding units, and connecting the multiple V-phase winding units in parallel to form a V-phase winding; cutting off a bridge wire between the W-phase winding units, and connecting the W-phase winding units in parallel to form a W-phase winding;

cutting off an over-bridge wire between the U-phase winding unit and the V-phase winding unit, cutting off an over-bridge wire between the V-phase winding unit and the W-phase winding unit, and forming a stator winding by the U-phase winding, the V-phase winding and the W-phase winding;

in conclusion, the winding of the stator winding can be completed only by one enameled wire from the beginning to the end of the winding, the winding process is free of wire breakage, the problem that the number of winding taps is large is solved, the identification is clear, the winding process is optimized, the wiring is simple and rapid, the operation is convenient, the error rate of the winding is reduced, complex processes such as tin soldering and the like in the traditional process are omitted, and the winding efficiency is improved; the problems that in the prior art, the number of winding joints is large, an operator is easy to connect wrong wires, winding procedures are complicated, the efficiency is low and the like are solved; the gap bridge wire is eliminated, so that the problem that the gap bridge wire between different phases is complicated and easily causes short circuit is avoided; the layer is clear, and the wiring is beautiful.

Further, as shown in fig. 4a, 4b and table 1, in the present embodiment, the U-phase winding, the V-phase winding and the W-phase winding are continuously wound in the following phase order: u → V → W; the U-phase winding, the V-phase winding, and the W-phase winding are wound in the following order of the stator core 13: a → L → G → F → K → J → E → D → I → H → C → B;

TABLE 1

S11 includes:

s111, winding the wire head of the winding U1 on the conducting sheet a, electrically connecting the conducting sheet a through the puncture tooth 25, and winding the winding U1 on the stator core A in a counterclockwise direction;

s112, clockwise winding a winding U2 on the stator iron core L, winding the wire tail of the winding U2 on a conducting strip L, and electrically connecting the conducting strip L through the puncture teeth 25;

s113, winding the wire end of the winding U3 on the conducting strip G, electrically connecting the conducting strip G through the puncture tooth 25, clockwise winding the winding U3 on the stator core G,

s114, winding a winding U4 on the stator core F in a counterclockwise manner, winding the wire tail of the winding U4 on a conducting strip F, and electrically connecting the conducting strip F with the piercing teeth 25; thus, the winding process of the U-phase winding is completed.

S2 includes:

s21, winding the wire end of the winding V1 on a conducting strip K, electrically connecting the conducting strip K through the puncture tooth 25, and clockwise winding a winding V1 on the stator iron core K;

s22, winding a winding V2 on the stator iron core J in a counterclockwise manner, winding the tail of the winding V2 on a conducting strip J, and electrically connecting the conducting strip J with the piercing teeth 25;

s23, winding the wire end of the winding V3 on a conducting strip E, electrically connecting the conducting strip E through the puncture tooth 25, and winding the winding V3 on the stator iron core E in the anticlockwise direction;

s24, clockwise winding a winding V4 on the stator iron core D, winding the wire tail of the winding V4 on a conducting strip D, and electrically connecting the conducting strip D through the puncture tooth 25; in this way, the winding process of the V-phase winding is completed.

S3 includes:

s31, winding the wire end of the winding W1 on the conducting strip I, electrically connecting the conducting strip I with the piercing tooth 25, and clockwise winding the winding W1 on the stator core I;

s32, winding a winding W2 on the stator iron core H in a counterclockwise manner, winding the wire tail of the winding W2 on the conducting strip H, and electrically connecting the conducting strip H with the piercing teeth 25;

s33, winding the wire end of the winding W3 on the conducting strip C, electrically connecting the conducting strip C through the puncture tooth 25, and winding the winding W3 on the stator core C anticlockwise;

s34, clockwise winding a winding W4 on the stator core B, winding the wire tail of the winding W4 on the conducting strip B, and electrically connecting the conducting strip B through the puncture tooth 25; thus, the winding process of the W-phase winding is completed;

s4 includes:

s41, cutting off a gap bridge line between the conducting strip l and the conducting strip g, cutting off a gap bridge line between the conducting strip j and the conducting strip e, and cutting off a gap bridge line between the conducting strip h and the conducting strip c;

s42, cutting off a gap bridge line between the conducting strip f and the conducting strip k and a gap bridge line between the conducting strip d and the conducting strip i;

in this way, the winding U1, the winding U2 and the winding U3 in the U-phase winding are connected in parallel, and the winding V1, the winding V2 and the winding V3 in the V-phase winding are connected in parallel; the winding W1, the winding W2 and the winding W3 in the W-phase winding are connected in parallel;

the winding method further comprises the following steps:

s5, connecting the U-phase bus bar 211 to the U-phase power line 161, connecting the V-phase bus bar 221 to the V-phase power line 162, and connecting the W-phase bus bar 231 to the W-phase power line 163; grounding the common conductor 24;

in conclusion, no wire breakage occurs in the winding process, the identification is clear, the winding process is optimized, the wire connection is simple and rapid, and the winding efficiency is improved; the winding tap can realize electric connection without polishing, the electric connection is rapid and reliable, the electric connection process is simplified, the problem of complicated polishing and soldering processes is solved, and the quality hidden troubles of insufficient polishing, insufficient soldering and the like are avoided; the problem that a winding tap is directly connected with a power line and is easy to loosen is solved; the gap bridge wire is eliminated, and the problem that the gap bridge wire between different phases is complicated and easily causes short circuit is avoided.

The conventional outer rotor permanent magnet synchronous motor has the defects that the process for manufacturing the stator is more complicated and generally comprises the following steps: nesting a stator core on an insulating framework, winding a stator winding, polishing the wire head and the wire tail of an enameled wire, splitting phases, sleeving small sleeves (used for distinguishing taps) with different colors on each wire head and each wire tail, sleeving an insulating sheath again, routing in a wire passing groove of the insulating framework according to a wiring diagram, externally connecting a power wire and the wire head of the winding, soldering tin at a wiring position, wrapping adhesive paper at a welding port, sleeving the insulating sheath, and leading out wires from the wire passing groove; the split phase of the procedure is easy to make mistakes, difficult to distinguish and long in time consumption; the enameled wire has more wire heads and wire tails, small sleeves with different colors are sleeved, the operation is troublesome, and the assembly efficiency is low.

The embodiment also provides a motor, which comprises the stator or the winding method adopting the stator.

The embodiment also provides an outer rotor permanent magnet synchronous motor, which comprises the stator or a winding method adopting the stator.

Exemplary embodiments of the present disclosure are specifically illustrated and described above. It is to be understood that the present disclosure is not limited to the precise arrangements, instrumentalities, or instrumentalities described herein; on the contrary, the disclosure is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims (9)

1. A stator is characterized by comprising an insulation framework, a stator iron core, a stator winding and a conductive piece, wherein the stator iron core is arranged on the insulation framework and comprises a first phase iron core and a second phase iron core; the stator winding comprises a first phase winding unit formed by winding the same enameled wire on the first phase iron core and a second phase winding unit formed by winding the same enameled wire on the second phase iron core in sequence;

the conductive pieces are arranged on the insulating framework and comprise a first conductive piece, a second conductive piece and a public conductive piece, the first conductive piece is provided with a first phase line head conductive piece, the second conductive piece is provided with a second phase line head conductive piece, and the public conductive piece is provided with a first phase line tail conductive piece and a second phase line tail conductive piece; the first phase line head conducting strip, the second phase line head conducting strip, the first phase line tail conducting strip and the second phase line tail conducting strip form piercing teeth;

the first phase line head conducting plate, the first phase iron core and the first phase line tail conducting plate are correspondingly arranged; the second phase line head conducting plate, the second phase iron core and the second phase line tail conducting plate are correspondingly arranged.

2. The stator of claim 1 wherein the stator core further comprises a third phase core; the stator winding further comprises a third phase winding unit wound on the third phase iron core, and the third phase winding unit is formed by continuously winding the enameled wire on the third phase iron core after the second phase winding unit is wound;

the conductive pieces further comprise a third conductive piece, a third phase wire head conductive piece is formed on the third conductive piece, and a third phase wire tail conductive piece is formed on the public conductive piece; the third phase line head conducting strip and the third phase line tail conducting strip form piercing teeth; and the third phase wire head conducting plate, the third phase iron core and the third phase wire tail conducting plate are correspondingly arranged.

3. The stator as claimed in claim 2, wherein the first conductive member, the second conductive member, the third conductive member and the common conductive member are formed as a bobbin by injection molding.

4. The stator according to claim 3, wherein the insulating bobbin comprises an upper bobbin formed with a mounting groove and a first stopper portion; a second limiting part is formed at one end of the wiring barrel; one end of the wiring barrel is arranged in the mounting groove, and is fixed on the upper framework through the matching of the first limiting part and the second limiting part.

5. The stator according to claim 3, wherein the first conductive member, the second conductive member, the third conductive member and the common conductive member are all arc structures, and the first conductive member, the second conductive member, the third conductive member and the common conductive member are arranged along a radial direction and/or an axial direction of the wire connecting cylinder in a staggered manner.

6. The stator according to claim 3, wherein two corresponding phase conductor conducting strips are formed in the first, second and third conducting strips along the circumferential direction of each conducting strip, and the two corresponding phase conductor conducting strips are located on the same diameter;

two first phase line tail conducting strips, two second phase line tail conducting strips and two third phase line tail conducting strips are formed along the public conducting piece, the two same phase line tail conducting strips are located on the same diameter, and the first phase line tail conducting strips, the second phase line tail conducting strips and the third phase line tail conducting strips are arranged at intervals.

7. The stator according to claim 6, wherein the first phase lead conducting strip, the second phase lead conducting strip, the third phase lead conducting strip, the first phase tail conducting strip, the second phase tail conducting strip and the third phase tail conducting strip extend along a radial direction of the respective conducting strip, and the conducting strips are staggered along a circumferential direction of the wire connecting cylinder.

8. The stator as claimed in claim 6, wherein each of the first, second and third conductive members is formed with a corresponding conductive bar, and the conductive bar is spaced apart from the end conductive piece of the respective conductive member and extends along the axial direction of the respective conductive member.

9. An electrical machine, characterized in that the electrical machine comprises a stator according to any of claims 1-8.

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