WO2017092191A1 - 定子冲片、定子组件及外转子电机 - Google Patents

定子冲片、定子组件及外转子电机 Download PDF

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Publication number
WO2017092191A1
WO2017092191A1 PCT/CN2016/075896 CN2016075896W WO2017092191A1 WO 2017092191 A1 WO2017092191 A1 WO 2017092191A1 CN 2016075896 W CN2016075896 W CN 2016075896W WO 2017092191 A1 WO2017092191 A1 WO 2017092191A1
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WO
WIPO (PCT)
Prior art keywords
tooth
stator
phase
coil
groove
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/CN2016/075896
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English (en)
French (fr)
Inventor
何锦豪
杨永峰
王雄程
张善儿
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.)
Zhongshan Broad Ocean Motor Co Ltd
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Zhongshan Broad Ocean Motor Co Ltd
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Publication date
Priority claimed from CN201520989534.1U external-priority patent/CN205212570U/zh
Priority claimed from CN201521080324.7U external-priority patent/CN205453322U/zh
Application filed by Zhongshan Broad Ocean Motor Co Ltd filed Critical Zhongshan Broad Ocean Motor Co Ltd
Publication of WO2017092191A1 publication Critical patent/WO2017092191A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/14—Stator cores with salient poles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/16—Stator cores with slots for windings

Definitions

  • the invention relates to a stator punching piece, a stator assembly and an outer rotor motor, and belongs to the technical field of motors.
  • Current motors such as plastic outer rotor motors, include a molded stator and a motor rotor.
  • the molded stator includes a stator core laminated by a plurality of stator punches and a main coil winding and a secondary coil winding wound around the stator core.
  • each of the ruled grooves has the same size and shape and is uniformly distributed on the outer side of the circumference.
  • the structure is simple and easy to mold, the winding wire is inconvenient and the winding ends are high and high, resulting in high consumption of motor materials and high cost.
  • the welt grooves are located on the outer side, the teeth are narrower, resulting in higher magnetic density of the stator teeth, thereby affecting the performance and efficiency of the motor.
  • a stator punching piece comprising a punching body with a central hole, the punching body comprising an annular yoke and a plurality of first and second teeth extending outwardly from an outer edge of the annular yoke, the first tooth And the second tooth portions are alternately arranged circumferentially, the first tooth portion includes a common root portion, at least four protruding teeth protruding outward from the common root portion, and the first phase line groove is formed between the adjacent two convex teeth a second phase line groove is formed between the adjacent first tooth portion and the second tooth portion, and a depth of the first phase wire groove in a radial direction of the punch body is shallower than the second wire groove edge The depth of the punch body in the radial direction.
  • the number of the protruding teeth protruding outward from the common root portion is five, including the first left bending tooth, the second left bending tooth, the straight tooth, the first right bending tooth and the second right bending tooth, A left curved tooth and a first right curved tooth are symmetrically distributed with respect to the straight tooth, and the second left curved tooth and the second right curved tooth are symmetrically distributed with respect to the straight tooth.
  • the number of the first tooth portion and the second tooth portion described above is six.
  • Stator assembly including stator core, end insulation, first phase winding and second phase winding, end
  • the rim is mounted on the end face of the stator core, the stator core is formed by laminating a plurality of stator punches as described above, the first phase winding is accommodated in the first phase wire trough, and the second phase winding is It is placed inside the second phase weaving groove.
  • the first phase winding described above comprises a plurality of sets of circumferentially spaced coils, the plurality of sets of coils being sequentially connected together, each set of coils comprising a plurality of first coils and a plurality of second coils, a first coil and a second coil Placed in different first phase welt grooves and staggered.
  • the number of the first phase line grooves described above is 24, and the number of the second phase line grooves is 12.
  • the first coil and the second coil have the same span, and the first coil and the second coil respectively span one first phase welt and span one second tooth.
  • the top surface of the end insulation described above is provided with a plurality of arcuate protrusions for separating the first coil and the second coil in each set of coils.
  • the outer rotor motor comprises a plastic stator, a rotating shaft and an outer rotor.
  • the outer rotor is sleeved outside the plastic stator.
  • the rotating shaft is installed in the middle of the plastic stator and is connected with the outer rotor.
  • the plastic stator includes a stator core, an end insulation and a coil.
  • the winding and the plastic body are respectively insulated on the end surface of the stator core, and the coil winding is wound around the end insulation, and the plastic sealing body integrally connects the stator core, the end insulation and the coil winding, and the stator core is It is formed by laminating a plurality of stator punches as described above.
  • a stator punching piece comprising a punching body with a central hole, the punching body comprising an annular yoke and a plurality of first and second teeth extending outwardly from an outer edge of the annular yoke, the first tooth And the second tooth portions are alternately arranged circumferentially, the first tooth portion includes a common root portion, a first left curved tooth protruding outward from the common root portion, a straight tooth and a first right curved tooth, and the straight tooth will bend the first left bend
  • the tooth and the first right bending tooth are divided and form two first phase welt grooves, and the second tooth portion and the two adjacent first tooth portions form two second phase welt grooves, the first phase
  • the depth of the weld groove in the radial direction of the punch body is shallower than the depth of the second wire groove in the radial direction of the punch body, and the width of the first left curved tooth is not equal to the width of the first right curved tooth.
  • the width of the first left curved tooth described above is smaller than the width of the first right curved tooth, and the width of the common root portion is greater than the width of the straight tooth.
  • the ratio of the width of the first left curved tooth to the width of the first right curved tooth is between 0.6 and 0.9.
  • the width of the first left curved tooth described above is between 3.0 mm and 3.4 mm, and the width of the first right curved tooth is between 3.8 mm and 4.0 mm.
  • the two second phase welt grooves described above include a first secondary winding groove located on the left side of the common tooth root portion of the second tooth portion and a second secondary winding groove located on the right side of the common tooth root portion of the second tooth portion,
  • the bottom of the groove of a pair of winding grooves is a first arc
  • the bottom of the groove of the second auxiliary winding groove is a second arc
  • the first arc and the second arc are both centered on the center of the stator punch.
  • the radius of the first arc described above is greater than the radius of the second arc.
  • the radius of the first arc described above is between 35.8 mm and 36.2 mm, and the radius of the second arc is between 35.3 mm and 35.7 mm.
  • the invention has the following effects:
  • the first tooth portion includes a common root portion, at least four protruding teeth projecting outward from the common root portion, and a first phase welt groove is formed between the adjacent two convex teeth, and the adjacent first tooth portion Forming a second phase line groove between the second tooth portion and a depth of the first phase line groove in a radial direction of the punch body is shallower than a depth of the second wire groove in a radial direction of the punch body
  • the structure of the stator punching piece is improved, the cost is reduced, and the magnetic density and torque ripple of the stator punching piece are effectively improved, so that the performance of the stator punching piece is improved, and the efficiency and performance of the motor are better;
  • the number of convex teeth protruding outward from the common root portion is five, and the number of the first tooth portion and the second tooth portion are six, that is, the first phase wire groove and the second phase wire groove groove
  • the sum of the total number is 36.
  • the stator punching piece with 36-slot structure is more excellent in magnetic density and torque ripple performance than the stator punching piece with 24-slot structure, and the winding wire is more convenient and the winding end is short, which is effectively reduced. Consumption of motor materials;
  • the first phase winding is accommodated in the first phase embedding trough
  • the second phase winding is accommodated in the second phase embedding trough
  • the first phase winding includes a plurality of sets of circumferentially spaced coils, and a plurality of sets of coils Connected together in turn, each set of coils includes a plurality of first coils and a plurality of second coils, and the first coil and the second coil are placed in different first phase welt grooves and are interlaced, thereby effectively solving the winding problem, so that The winding is convenient, and the magnetic field distribution is uniform, so that the efficiency of the motor is improved, and the performance of the motor is improved;
  • the top surface of the end insulation is provided with a plurality of arcuate protrusions for separating the first coil and the second coil in each set of coils, and after the first coil is wound, the arcuate protrusion is passed
  • the first phase wire groove can be vacated for the second coil, so that the first coil wound firstly occupies the first phase wire groove, thereby facilitating the winding of the second coil and improving the efficiency of the winding;
  • the width of the first left bending tooth is not equal to the width of the first right bending tooth, so the asymmetric first first bending tooth and the first right bending tooth design are adopted, and the main winding and the secondary winding are taken during winding
  • the side with the same winding current direction is wound on the tooth having a relatively large tooth width, and the side opposite to the current direction of the main coil winding and the secondary coil winding is wound on the tooth having a relatively small tooth width, thereby changing the radial magnetic field of the stator. Close distribution, which in turn improves the performance of the motor and saves motor stator material, thereby saving motor costs;
  • the radius of the first arc is larger than the radius of the second arc.
  • the side with the same current direction of the main coil winding and the secondary coil winding is wound around a relatively large circular arc radius.
  • the side opposite to the current direction of the main coil winding and the sub coil winding is wound in a relatively small circular arc groove, thereby changing the radial magnetic density distribution of the stator, thereby improving the performance of the motor and saving the motor.
  • Stator material which in turn saves on motor costs.
  • FIG. 1 is a schematic structural view of a stator punching piece in the first embodiment
  • FIG. 2 is a schematic structural view of a stator assembly in Embodiment 2;
  • Figure 3 is a plan view of the stator assembly of the second embodiment
  • Figure 4 is a perspective view of the outer rotor motor of the third embodiment
  • Figure 5 is a schematic structural view of an outer rotor motor in the third embodiment
  • Figure 6 is a schematic structural view of a stator punching piece in the fourth embodiment
  • Figure 7 is a partial enlarged view of a portion C of Figure 6;
  • Fig. 8 is a schematic view showing another structure of the stator punching piece in the fourth embodiment.
  • Embodiment 1 As shown in FIG. 1 , this embodiment is a stator punching piece, which includes a punch with a center hole. a sheet body 1 comprising an annular yoke portion 10 and a plurality of first tooth portions 11 and second tooth portions 12 projecting outwardly from an outer edge of the annular yoke portion 10, a first tooth portion 11 and a second tooth portion The portions 12 are alternately arranged in a circumferential direction.
  • the first tooth portion 11 includes a common root portion 111 and at least four protruding teeth 112 extending outward from the common root portion 111. The first two protruding teeth 112 form a first phase inlay.
  • the wire groove 13 forms a second phase line groove 14 between the adjacent first tooth portion 11 and the second tooth portion 12, and the depth of the first phase wire groove 13 in the radial direction of the punch body 1 is shallower than The depth of the second wire groove 14 in the radial direction of the punch body 1.
  • the number of the protruding teeth 112 extending outward from the common root portion 111 is five, including a first left curved tooth 1121, a second left curved tooth 1122, a straight tooth 1123, a first right curved tooth 1124, and a second right curved tooth.
  • first left curved tooth 1121 and the first right curved tooth 1124 are symmetrically distributed with respect to the straight tooth 1123
  • the second left curved tooth 1122 and the second right curved tooth 1125 are symmetrically distributed with respect to the straight tooth 1123.
  • the number of the first tooth portion 11 and the second tooth portion 12 is six.
  • Embodiment 2 As shown in FIG. 2 and FIG. 3, this embodiment is a stator assembly including a stator core 31, an end insulation 32, a first phase winding 21 and a second phase winding 22, and an end insulation 32 is mounted. On the end face of the stator core 31, the stator core 31 is formed by stacking a plurality of stator punches as described in the first embodiment, and the first phase winding 21 is received in the first phase weaving groove 13. The second phase winding 22 is received in the second phase wire slot 14.
  • the first phase winding 21 includes a plurality of sets of circumferentially spaced coils 211. The plurality of sets of coils 211 are sequentially connected together.
  • Each set of coils 211 includes a plurality of first coils 2111 and a plurality of second coils 2112, the first coil. 2111 and the second coil 2112 are placed in different first phase welt grooves 13 and are alternately wound.
  • the number of the first phase line grooves 13 is 24, and the number of the second phase line grooves 14 is 12.
  • the span of the first coil 2111 and the second coil 2112 are equal, and the first coil 2111 and the second coil 2112 respectively span one first phase weaving groove 13 and span one second tooth portion 12.
  • a plurality of arcuate protrusions 321 are provided on the top surface of the end insulation 32 for spacing the first coil 2111 and the second coil 2112 in each set of coils 211.
  • Embodiment 3 As shown in FIG. 4 and FIG. 5, this embodiment is an outer rotor motor including a plastic stator 3, a rotating shaft 4 and an outer rotor 5.
  • the outer rotor 5 is sleeved on the outside of the plastic stator 3, and the rotating shaft 4 is mounted on
  • the stator 3 is plastically sealed and connected to the outer rotor 5, which includes a stator core 31 and an end.
  • the insulating portion 32, the coil winding 33 and the molding body 34 are mounted on the end surface of the stator core 31, and the coil winding 33 is wound around the end insulating member 32.
  • the sealing body 34 insulates the stator core 31 and the end portion. 32 and the coil windings 33 are integrally joined, and the stator core 31 is formed by laminating a plurality of stator punches as described in the first embodiment.
  • Embodiment 4 As shown in FIG. 6 and FIG. 7, this embodiment is a stator punching piece comprising a punching body 1 with a central hole, the punching body 1 including an annular yoke 10 and a circular yoke a plurality of first tooth portions 11 and second tooth portions 12 projecting outwardly on the outer side edge 10, the first tooth portion 11 and the second tooth portion 12 are alternately circumferentially arranged, and the first tooth portion 11 includes a common root portion 111, which is common a first left bending tooth 1121, a straight tooth 1123 and a first right bending tooth 1124 protruding outwardly from the root portion 111, the straight tooth 1123 dividing the first left bending tooth 1121 and the first right bending tooth 1124 and forming two first Two phase-embedded grooves 14 are formed between the second tooth portion 12 and the adjacent two first tooth portions 11, and the first phase-embedded groove 13 is along the diameter of the punch body 1 The depth in the direction is shallower than the depth of the second
  • the width of the first left curved tooth 1121 is smaller than the width of the first right curved tooth 1124, and the width of the common root portion 111 is greater than the width of the straight tooth 1123.
  • the ratio of the width of the first left curved tooth 1121 to the width of the first right curved tooth 1124 is between 0.6 and 0.9.
  • the width of the first left curved tooth 1121 is between 3.0 mm and 3.4 mm, and the width of the first right curved tooth 1124 is between 3.8 mm and 4.0 mm.
  • the two second phase welt grooves 14 include a first secondary winding groove 141 located on the left side of the common root portion 111 of the second tooth portion 12 and a second secondary winding portion located on the right side of the common root portion 111 of the second tooth portion 12.
  • the bottom of the groove of the first auxiliary winding groove 141 is a first circular arc 1410
  • the bottom of the groove of the second auxiliary winding groove 142 is a second circular arc 1420
  • the first circular arc 1410 and the second circular arc 1420 are both It is centered on the center O of the stator punch.
  • the radius of the first arc 1410 is greater than the radius of the second arc 1420.
  • the radius of the first arc 1410 is between 35.8 mm and 36.2 mm
  • the radius of the second arc 1420 is between 35.3 mm and 35.7 mm.
  • the width of the first left curved tooth 1121 is not equal to the width of the first right curved tooth 1124, so that the asymmetrical first left curved tooth 1121 and the first right curved tooth 1124 are used, and when winding, the main winding and the main winding are The side of the secondary coil winding current is wound on the same tooth with a relatively large tooth width, and the primary coil winding and the secondary The opposite side of the coil winding current is wound around the teeth with relatively small tooth width, thereby changing the radial magnetic density distribution of the stator, thereby improving the performance of the motor, and saving the stator material of the motor, thereby saving the motor cost.
  • a and B respectively show the local main coil winding and the sub coil winding, and + and - in front of A and B indicate the direction of current flowing through the coil winding, wherein + indicates that the current direction is perpendicular to the paper, and - indicates the current direction.
  • + indicates that the current direction is perpendicular to the paper
  • - indicates the current direction.
  • FIG. 8 shows all the main coil windings and the sub coil windings wound around the stator, wherein the main coil windings wound around the first phase embedding slots 13 are wound around the second phase embedding slots 14 Inside is the secondary winding, X is the direction in which the current enters, and ⁇ indicates the direction in which the current flows out.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

一种定子冲片、定子组件及外转子电机，定子冲片包括带有中心孔的冲片本体（1），冲片本体（1）包括环形轭部（10）和从环形轭部（10）外侧边缘上往外伸出的若干第一齿部（11）和第二齿部（12），第一齿部（11）和第二齿部（12）交替周向排列，第一齿部（11）包括公用齿根部（111）、从公用齿根部（111）上往外伸出的至少4个凸齿（112），相邻的2个凸齿（112）之间形成第一相嵌线槽（13），相邻的第一齿部（11）和第二齿部（12）之间形成第二相嵌线槽（14），第一相嵌线槽（13）沿冲片本体（1）径向方向的深度浅于第二相嵌线槽（14）沿冲片本体（1）径向方向的深度，该定子冲片可以改善电机性能。

Description

定子冲片、定子组件及外转子电机 技术领域：
本发明涉及一种定子冲片、定子组件及外转子电机，属于电机技术领域。
背景技术：
目前的电机，例如塑封外转子电机，其包括塑封定子和电机转子。其中塑封定子中包括由若干定子冲片叠压而成的定子铁芯和绕设于定子铁芯上的主线圈绕组和副线圈绕组。
现有技术中的定子冲片，其模型的常规结构是每个嵌线槽大小、形状相同并且均布在圆周外侧。这种结构虽然结构简单、便于模具制作，但绕线排线不便、绕组端部长且高，造成电机材料消耗多、成本高。而且，由于嵌线槽都位于外侧，使得齿部较窄，造成定子齿磁密较高，从而影响了电机性能和效率。
发明内容：
本发明的目的是提供一种定子冲片、定子组件及外转子电机，其可以改善电机性能。
本发明的目的是通过下述技术方案予以实现的。
定子冲片，包括带有中心孔的冲片本体，所述冲片本体包括环形轭部和从环形轭部外侧边缘上往外伸出的若干第一齿部和第二齿部，第一齿部和第二齿部交替周向排列，第一齿部包括公用齿根部、从公用齿根部上往外伸出的至少4个凸齿，相邻的2个凸齿之间形成第一相嵌线槽，相邻的第一齿部和第二齿部之间形成第二相嵌线槽，所述第一相嵌线槽沿冲片本体径向方向的深度浅于所述第二嵌线槽沿冲片本体径向方向的深度。
上述所述的从公用齿根部上往外伸出的凸齿的数量为5个，包括第一左弯齿、第二左弯齿、直齿、第一右弯齿和第二右弯齿，第一左弯齿与第一右弯齿相对于直齿对称分布，第二左弯齿与第二右弯齿相对于直齿对称分布。
上述所述的第一齿部与第二齿部的数量均为6个。
定子组件，包括定子铁芯、端部绝缘、第一相绕组和第二相绕组，端部绝 缘安装在定子铁芯的端面上，所述定子铁芯是由若干如上述所描述的定子冲片叠压而成，第一相绕组容置于第一相嵌线槽里面，第二相绕组容置于第二相嵌线槽里面。
上述所述的第一相绕组包括多组沿周向间隔分布的线圈，多组线圈依次连接在一起，每组线圈包括若干匝第一线圈和若干匝第二线圈，第一线圈与第二线圈置于不同第一相嵌线槽里面并交错叠绕。
上述所述的第一相嵌线槽的数量为24个，所述第二相嵌线槽的数量为12个。
上述所述的第一线圈与第二线圈的跨距相等，第一线圈与第二线圈分别跨越1个第一相嵌线槽并跨过1个第二齿部。
上述所述的端部绝缘的顶面上设置有若干弧形凸起，弧形凸起用于隔开每组线圈中的第一线圈与第二线圈。
外转子电机，包括塑封定子、转轴和外转子，外转子套设于塑封定子外面，转轴安装在塑封定子中间并且与外转子连接在一起，所述塑封定子包括定子铁芯、端部绝缘、线圈绕组和塑封体，端部绝缘安装在定子铁芯的端面上，线圈绕组绕设于端部绝缘上，塑封体把定子铁芯、端部绝缘以及线圈绕组连结成一体，所述定子铁芯是由若干如上述所描述的定子冲片叠压而成。
定子冲片，包括带有中心孔的冲片本体，所述冲片本体包括环形轭部和从环形轭部外侧边缘上往外伸出的若干第一齿部和第二齿部，第一齿部和第二齿部交替周向排列，第一齿部包括公用齿根部、从公用齿根部上往外伸出的第一左弯齿、直齿和第一右弯齿，直齿将第一左弯齿和第一右弯齿分割并形成两个第一相嵌线槽，第二齿部与相邻的两个第一齿部之间形成两个第二相嵌线槽，所述第一相嵌线槽沿冲片本体径向方向的深度浅于所述第二嵌线槽沿冲片本体径向方向的深度，第一左弯齿的宽度不等于第一右弯齿的宽度。
上述所述的第一左弯齿的宽度小于第一右弯齿的宽度，公用齿根部的宽度大于直齿的宽度。
上述所述的第一左弯齿的宽度与第一右弯齿的宽度的比例在0.6-0.9之间。
上述所述的第一左弯齿的宽度大小在3.0mm至3.4mm之间，第一右弯齿的宽度大小在3.8mm至4.0mm之间。
上述所述的两个第二相嵌线槽包括位于第二齿部公用齿根部左侧的第一副绕线槽和位于第二齿部公用齿根部右侧的第二副绕线槽，第一副绕线槽的槽底部为第一圆弧，第二副绕线槽的槽底部为第二圆弧，第一圆弧与第二圆弧均是以定子冲片的中心为圆心。
上述所述的第一圆弧的半径大于第二圆弧的半径。
上述所述的第一圆弧的半径大小在35.8mm至36.2mm之间，第二圆弧的半径大小在35.3mm至35.7mm之间。
本发明与现有技术相比，具有如下效果：
1)第一齿部包括公用齿根部、从公用齿根部上往外伸出的至少4个凸齿，相邻的2个凸齿之间形成第一相嵌线槽，相邻的第一齿部和第二齿部之间形成第二相嵌线槽，所述第一相嵌线槽沿冲片本体径向方向的深度浅于所述第二嵌线槽沿冲片本体径向方向的深度,改进了定子冲片的结构，降低了成本，并且有效改善定子冲片的磁密以及转矩脉动，使得定子冲片性能得到提高，电机效率以及性能更好；
2)从公用齿根部上往外伸出的凸齿的数量为5个，第一齿部与第二齿部的数量均为6个,即第一相嵌线槽与第二相嵌线槽的数量总和为36个，36槽结构的定子冲片比起24槽结构的定子冲片，磁密和转矩脉动性能更为优异，并且绕线排线更加方便、绕组端部矮，有效减小电机材料的消耗；
3)第一相绕组容置于第一相嵌线槽里面，第二相绕组容置于第二相嵌线槽里面，第一相绕组包括多组沿周向间隔分布的线圈，多组线圈依次连接在一起，每组线圈包括若干匝第一线圈和若干匝第二线圈，第一线圈与第二线圈置于不同第一相嵌线槽里面并交错叠绕，有效解决绕线难题，使得绕线变得方便，并且可使磁场分布均匀，使电机的效率得以提升，改善了电机的性能；
4)端部绝缘的顶面上设置有若干弧形凸起，弧形凸起用于隔开每组线圈中的第一线圈与第二线圈,当绕完第一线圈之后，通过弧形凸起可以为第二线圈腾出第一相嵌线槽，避免先绕的第一线圈占据第一相嵌线槽，由此可以方便第二线圈的绕线，提高绕线的效率；
5)第一左弯齿的宽度不等于第一右弯齿的宽度,通过故采用不对称的第一左弯齿与第一右弯齿设计，在绕线时，把主线圈绕组和副线圈绕组电流方向相同的一侧绕在齿宽相对较大的齿上，而把主线圈绕组和副线圈绕组电流方向相反的一侧绕在齿宽相对较小的齿上，从而改变定子径向磁密分布，进而提高电机的性能，并且可以节省电机定子材料，进而节省电机成本；
6)第一圆弧的半径大于第二圆弧的半径，同理，在绕线时，把主线圈绕组和副线圈绕组电流方向相同的一侧绕在圆弧半径相对较大的嵌线槽里面，而把主线圈绕组和副线圈绕组电流方向相反的一侧绕在圆弧半径相对较小的嵌线槽里面，从而改变定子径向磁密分布，进而提高电机的性能，并且可以节省电机定子材料，进而节省电机成本。
附图说明：
图1是实施例一中定子冲片的结构示意图；
图2是实施例二中定子组件的结构示意图；
图3是实施例二中定子组件的俯视图；
图4是实施例三中外转子电机的立体图；
图5是实施例三中外转子电机的结构示意图；
图6是实施例四中定子冲片的1个结构示意图；
图7是图6中C部分局部放大图；
图8是实施例四中定子冲片的另1个结构示意图。
具体实施方式：
下面通过具体实施例并结合附图对本发明作进一步详细的描述。
实施例一：如图1所示，本实施例是一种定子冲片，包括带有中心孔的冲 片本体1，所述冲片本体1包括环形轭部10和从环形轭部10外侧边缘上往外伸出的若干第一齿部11和第二齿部12，第一齿部11和第二齿部12交替周向排列，第一齿部11包括公用齿根部111、从公用齿根部111上往外伸出的至少4个凸齿112，相邻的2个凸齿112之间形成第一相嵌线槽13，相邻的第一齿部11和第二齿部12之间形成第二相嵌线槽14，所述第一相嵌线槽13沿冲片本体1径向方向的深度浅于所述第二嵌线槽14沿冲片本体1径向方向的深度。从公用齿根部111上往外伸出的凸齿112的数量为5个，包括第一左弯齿1121、第二左弯齿1122、直齿1123、第一右弯齿1124和第二右弯齿1125，第一左弯齿1121与第一右弯齿1124相对于直齿1123对称分布，第二左弯齿1122与第二右弯齿1125相对于直齿1123对称分布。所述第一齿部11与第二齿部12的数量均为6个。
实施例二：如图2和图3所示，本实施例是一种定子组件，包括定子铁芯31、端部绝缘32、第一相绕组21和第二相绕组22，端部绝缘32安装在定子铁芯31的端面上，所述定子铁芯31是由若干如实施例一所描述的定子冲片叠压而成，第一相绕组21容置于第一相嵌线槽13里面，第二相绕组22容置于第二相嵌线槽14里面。所述第一相绕组21包括多组沿周向间隔分布的线圈211，多组线圈211依次连接在一起，每组线圈211包括若干匝第一线圈2111和若干匝第二线圈2112，第一线圈2111与第二线圈2112置于不同第一相嵌线槽13里面并交错叠绕。所述第一相嵌线槽13的数量为24个，所述第二相嵌线槽14的数量为12个。第一线圈2111与第二线圈2112的跨距相等，第一线圈2111与第二线圈2112分别跨越1个第一相嵌线槽13并跨过1个第二齿部12。在端部绝缘32的顶面上设置有若干弧形凸起321，弧形凸起321用于隔开每组线圈211中的第一线圈2111与第二线圈2112。
实施例三：如图4和图5所示，本实施例是一种外转子电机，包括塑封定子3、转轴4和外转子5，外转子5套设于塑封定子3外面，转轴4安装在塑封定子3中间并且与外转子5连接在一起，所述塑封定子3包括定子铁芯31、端 部绝缘32、线圈绕组33和塑封体34，端部绝缘32安装在定子铁芯31的端面上，线圈绕组33绕设于端部绝缘32上，塑封体34把定子铁芯31、端部绝缘32以及线圈绕组33连结成一体，所述定子铁芯31是由若干如实施例一所描述的定子冲片叠压而成。
实施例四：如图6和图7所示，本实施例是一种定子冲片，包括带有中心孔的冲片本体1，所述冲片本体1包括环形轭部10和从环形轭部10外侧边缘上往外伸出的若干第一齿部11和第二齿部12，第一齿部11和第二齿部12交替周向排列，第一齿部11包括公用齿根部111、从公用齿根部111上往外伸出的第一左弯齿1121、直齿1123和第一右弯齿1124，直齿1123将第一左弯齿1121和第一右弯齿1124分割并形成两个第一相嵌线槽13，第二齿部12与相邻的两个第一齿部11之间形成两个第二相嵌线槽14，所述第一相嵌线槽13沿冲片本体1径向方向的深度浅于所述第二嵌线槽14沿冲片本体1径向方向的深度，第一左弯齿1121的宽度不等于第一右弯齿1124的宽度。第一左弯齿1121的宽度小于第一右弯齿1124的宽度，公用齿根部111的宽度大于直齿1123的宽度。第一左弯齿1121的宽度与第一右弯齿1124的宽度的比例在0.6-0.9之间。第一左弯齿1121的宽度大小在3.0mm至3.4mm之间，第一右弯齿1124的宽度大小在3.8mm至4.0mm之间。所述两个第二相嵌线槽14包括位于第二齿部12公用齿根部111左侧的第一副绕线槽141和位于第二齿部12公用齿根部111右侧的第二副绕线槽142，第一副绕线槽141的槽底部为第一圆弧1410，第二副绕线槽142的槽底部为第二圆弧1420，第一圆弧1410与第二圆弧1420均是以定子冲片的中心O为圆心。第一圆弧1410的半径大于第二圆弧1420的半径。第一圆弧1410的半径大小在35.8mm至36.2mm之间，第二圆弧1420的半径大小在35.3mm至35.7mm之间。
第一左弯齿1121的宽度不等于第一右弯齿1124的宽度，通过故采用不对称的第一左弯齿1121与第一右弯齿1124设计，在绕线时，把主线圈绕组和副线圈绕组电流方向相同的一侧绕在齿宽相对较大的齿上，而把主线圈绕组和副 线圈绕组电流方向相反的一侧绕在齿宽相对较小的齿上，从而改变定子径向磁密分布，进而提高电机的性能，并且可以节省电机定子材料，进而节省电机成本。图6中A、B分别表示局部的主线圈绕组和副线圈绕组，A、B前面的+、-表示流经线圈绕组电流方向的不同，其中+表示电流方向垂直纸面向外，-表示电流方向垂直纸面向里。
具体的如图8所示，其表示绕在定子上的全部主线圈绕组和副线圈绕组，其中绕在第一相嵌线槽13里面的为主线圈绕组，绕在第二相嵌线槽14里面的为副线圈绕组，X表示电流进入的方向，●表示电流出去的方向。
以上实施例为本发明的较佳实施方式，但本发明的实施方式不限于此，其他任何未背离本发明的精神实质与原理下所作的改变、修饰、替代、组合、简化，均为等效的置换方式，都包含在本发明的保护范围之内。

Claims (16)

  1. 定子冲片，包括带有中心孔的冲片本体(1)，所述冲片本体(1)包括环形轭部(10)和从环形轭部(10)外侧边缘上往外伸出的若干第一齿部(11)和第二齿部(12)，第一齿部(11)和第二齿部(12)交替周向排列，其特征在于：第一齿部(11)包括公用齿根部(111)、从公用齿根部(111)上往外伸出的至少4个凸齿(112)，相邻的2个凸齿(112)之间形成第一相嵌线槽(13)，相邻的第一齿部(11)和第二齿部(12)之间形成第二相嵌线槽(14)，所述第一相嵌线槽(13)沿冲片本体(1)径向方向的深度浅于所述第二嵌线槽(14)沿冲片本体(1)径向方向的深度。
  2. 根据权利要求1所述的定子冲片，其特征在于：从公用齿根部(111)上往外伸出的凸齿(112)的数量为5个，包括第一左弯齿(1121)、第二左弯齿(1122)、直齿(1123)、第一右弯齿(1124)和第二右弯齿(1125)，第一左弯齿(1121)与第一右弯齿(1124)相对于直齿(1123)对称分布，第二左弯齿(1122)与第二右弯齿(1125)相对于直齿(1123)对称分布。
  3. 根据权利要求1或2所述的定子冲片，其特征在于：所述第一齿部(11)与第二齿部(12)的数量均为6个。
  4. 定子组件，包括定子铁芯(31)、端部绝缘(32)、第一相绕组(21)和第二相绕组(22)，端部绝缘(32)安装在定子铁芯(31)的端面上，其特征在于：所述定子铁芯(31)是由若干如权利要求1至3任一项所描述的定子冲片叠压而成，第一相绕组(21)容置于第一相嵌线槽(13)里面，第二相绕组(22)容置于第二相嵌线槽(14)里面。
  5. 根据权利要求4所述的定子组件，其特征在于：所述第一相绕组(21)包括多组沿周向间隔分布的线圈(211)，多组线圈(211)依次连接在一起，每组线圈(211)包括若干匝第一线圈(2111)和若干匝第二线圈(2112)，第一线圈(2111)与第二线圈(2112)置于不同第一相嵌线槽(13)里面并交错叠绕。
  6. 根据权利要求5所述的定子组件，其特征在于：所述第一相嵌线槽(13)的数量为24个，所述第二相嵌线槽(14)的数量为12个。
  7. 根据权利要求5或6所述的定子组件，其特征在于：第一线圈(2111)与第二线圈(2112)的跨距相等，第一线圈(2111)与第二线圈(2112)分别跨越1个第一相嵌线槽(13)并跨过1个第二齿部(12)。
  8. 根据权利要求5或6所述的定子组件，其特征在于：在端部绝缘(32)的顶面上设置有若干弧形凸起(321)，弧形凸起(321)用于隔开每组线圈(211)中的第一线圈(2111)与第二线圈(2112)。
  9. 外转子电机，包括塑封定子(3)、转轴(4)和外转子(5)，外转子(5)套设于塑封定子(3)外面，转轴(4)安装在塑封定子(3)中间并且与外转子(5)连接在一起，所述塑封定子(3)包括定子铁芯(31)、端部绝缘(32)、线圈绕组(33)和塑封体(34)，端部绝缘(32)安装在定子铁芯(31)的端面上，线圈绕组(33)绕设于端部绝缘(32)上，塑封体(34)把定子铁芯(31)、端部绝缘(32)以及线圈绕组(33)连结成一体，其特征在于：所述定子铁芯(31)是由若干如权利要求1至3任一项所描述的定子冲片叠压而成。
  10. 定子冲片，包括带有中心孔的冲片本体(1)，所述冲片本体(1)包括环形轭部(10)和从环形轭部(10)外侧边缘上往外伸出的若干第一齿部(11)和第二齿部(12)，第一齿部(11)和第二齿部(12)交替周向排列，第一齿部(11)包括公用齿根部(111)、从公用齿根部(111)上往外伸出的第一左弯齿(1121)、直齿(1123)和第一右弯齿(1124)，直齿(1123)将第一左弯齿(1121)和第一右弯齿(1124)分割并形成两个第一相嵌线槽(13)，第二齿部(12)与相邻的两个第一齿部(11)之间形成两个第二相嵌线槽(14)，所述第一相嵌线槽(13)沿冲片本体(1)径向方向的深度浅于所述第二嵌线槽(14)沿冲片本体(1)径向方向的深度，其特征在于：第一左弯齿(1121)的宽度不等于第一右弯齿(1124)的宽度。
  11. 根据权利要求10所述的定子冲片，其特征在于：第一左弯齿(1121) 的宽度小于第一右弯齿(1124)的宽度，公用齿根部(111)的宽度大于直齿(1123)的宽度。
  12. 根据权利要求11所述的定子冲片，其特征在于：第一左弯齿(1121)的宽度与第一右弯齿(1124)的宽度的比例在0.6-0.9之间。
  13. 根据权利要求10或11或12所述的定子冲片，其特征在于：第一左弯齿(1121)的宽度大小在3.0mm至3.4mm之间，第一右弯齿(1124)的宽度大小在3.8mm至4.0mm之间。
  14. 根据权利要求10或11或12所述的定子冲片，其特征在于：所述两个第二相嵌线槽(14)包括位于第二齿部(12)公用齿根部(111)左侧的第一副绕线槽(141)和位于第二齿部(12)公用齿根部(111)右侧的第二副绕线槽(142)，第一副绕线槽(141)的槽底部为第一圆弧(1410)，第二副绕线槽(142)的槽底部为第二圆弧(1420)，第一圆弧(1410)与第二圆弧(1420)均是以定子冲片的中心为圆心。
  15. 根据权利要求14所述的定子冲片，其特征在于：第一圆弧(1410)的半径大于第二圆弧(1420)的半径。
  16. 根据权利要求15所述的定子冲片，其特征在于：第一圆弧(1410)的半径大小在35.8mm至36.2mm之间，第二圆弧(1420)的半径大小在35.3mm至35.7mm之间。
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CN108565998B (zh) * 2018-05-28 2024-02-06 黄石东贝压缩机有限公司 一种定子冲片及三相电机
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