WO2017121191A1 - Stamped sheet for generator - Google Patents

Stamped sheet for generator Download PDF

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Publication number
WO2017121191A1
WO2017121191A1 PCT/CN2016/107141 CN2016107141W WO2017121191A1 WO 2017121191 A1 WO2017121191 A1 WO 2017121191A1 CN 2016107141 W CN2016107141 W CN 2016107141W WO 2017121191 A1 WO2017121191 A1 WO 2017121191A1
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WO
WIPO (PCT)
Prior art keywords
coil
groove
generator
sheet
tooth
Prior art date
Application number
PCT/CN2016/107141
Other languages
French (fr)
Chinese (zh)
Inventor
张兵
李曦
Original Assignee
重庆智仁发电设备有限责任公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 重庆智仁发电设备有限责任公司 filed Critical 重庆智仁发电设备有限责任公司
Publication of WO2017121191A1 publication Critical patent/WO2017121191A1/en

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/16—Stator cores with slots for windings
    • H02K1/165—Shape, form or location of the slots
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/16—Stator cores with slots for windings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
    • H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information

Definitions

  • the present invention relates to the field of generator technology, and in particular, to a generator chip.
  • the generator stator is composed of a stator core, a stator winding and a base, wherein the stator core is formed by overlapping and stacking high-magnetic materials.
  • the structure of the punch directly affects the efficiency, life, performance and assembly efficiency of the generator.
  • the stator punching piece adopts a design of a wide-tooth narrow groove in the design process.
  • the design method of the wide-tooth narrow groove has the following problems: Since the tooth width is too wide, the tooth magnetic density is low. The magnetic density of the yoke is also low, and the area of the slot is small, and the power current that can be carried by the whole is limited, and finally the power density is too small. Because the punching groove is small, the density of the magnetic field cannot be formed to be saturated. Therefore, the prior art generator chip has a problem that the power density is too small and the magnetic field density cannot be formed.
  • the present invention provides a generator chip.
  • the generator chip of the present invention comprises a sheet body having an annular structure, and a circular hole is formed in a middle portion of the sheet body to be engaged with the rotor, and a plurality of coil grooves and coil teeth are sequentially disposed on the inner circle of the sheet body.
  • the coil groove is a trapezoidal groove, which includes a notch, a groove top and a groove bottom; the coil teeth are rectangular teeth, and the width of the bottom of the groove is wider than the width of the coil teeth: 1.8:1 to 2.3:1
  • the ratio of the width of the top of the groove to the width of the coil teeth is 1.2:1 to 1.7:1.
  • the width of the notch is 0.7 to 0.8 times the width of the coil teeth.
  • the height between the top of the groove and the bottom of the groove is 3 to 3.5 times the height of the notch.
  • the outer diameter of the sheet is 180 mm to 200 mm, and the sheet body The inner diameter of the circle is 90mm-110m [0008] Further, the number of the coil slots is 24.
  • soldering notch is provided on the outer ring of the sheet.
  • the cross-sectional shape of the soldering notch is "W" shape.
  • the number of the soldering gaps is six.
  • the generator chip of the invention has a special design of the coil groove and the coil tooth, so that it has a high magnetic density of the tooth, and the final air gap magnetic potential is compared with the total magnetic potential, and the proportion is not large, and finally the magnetic body is formed. Saturation phenomenon, which can reduce the power volume, compress the power volume of the traditional generator, increase its power density, and thus reduce the weight of the generator part, and finally reduce the weight of the total unit.
  • FIG. 1 is a schematic structural view of a generator chip according to the present invention.
  • FIG. 2 is a partially enlarged schematic view of the generator chip of FIG. 1.
  • FIG. 1 is a schematic structural view of a generator chip according to the present invention
  • FIG. 2 is a partially enlarged structural view of the generator chip of FIG.
  • 1 is a sheet
  • 2 is a circular hole
  • 3 is a coil groove
  • 4 is a coil tooth
  • 31 is a notch
  • 32-bit groove is at the top
  • 33 is a groove bottom
  • 5 is a welded notch.
  • the generator chip comprises a sheet body 1 of an annular structure, and a circular hole 2 is formed in the middle of the sheet body 1 to be engaged with the rotor, and is sequentially disposed on the inner circle of the sheet body 1.
  • the coil groove 3 is a trapezoidal groove including a notch 31, a groove top 32 and a groove bottom 33, the notch 31 being adjacent to the groove top 32, and the groove bottom 33 being disposed opposite the groove top 32.
  • the groove top portion 32 refers to the portion of the coil groove 3 having the widest width dimension, that is, the lower base corresponding to the trapezoid; the groove bottom portion 33 refers to the portion of the coil groove 3 having the narrowest width dimension, that is, the upper portion corresponding to the trapezoid .
  • the coil teeth 4 are rectangular teeth, the width of the groove bottom 33 and the width of the coil teeth 4 The ratio is 1.8:1 to 2.3: 1, and the ratio of the width of the groove top 32 to the width of the coil teeth 4 is 1.2:1 to 1.7:1.
  • the width of the notch 31 is 0.7 to 0.8 times the width of the coil teeth 4.
  • the height between the trough top 32 and the trough bottom 33 is 3 to 3.5 times the height of the notch 31.
  • the outer diameter of the sheet 1 is 180 mm to 200 mm, and the inner diameter of the sheet 1 is 90 mm to 110 mm.
  • the number of coil slots 3 is 24.
  • the groove shape of the coil groove 3 is an obvious wide-mouthed bottom groove, the groove volume is large, the groove leakage reactance is large, the same tooth has a high magnetic density, and the air gap magnetic potential and the total magnetic potential are compared. , the proportion is not large, and finally form a magnetic saturation phenomenon, which can reduce the power volume, increase its power density, and ensure that the demagnetization reaction of the generator after the rated load operation can be effectively contained.
  • a welded notch 5 is provided on the outer ring of the sheet 1, and the cross-sectional shape of the welded notch 5 is "W", and the number of the welding notches 5 is six.
  • the generator chip of the invention is designed by the special size ratio of the coil groove and the coil tooth, so that it has a high tooth magnetic density, and the final air gap magnetic potential and the total magnetic potential are compared, and the proportion is not large. Eventually, magnetic saturation is formed, which can reduce the power volume, compress the power volume of the traditional generator, and increase the power density, thereby reducing the weight of the generator part and making the total unit weight lower.

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

Abstract

A stamped sheet for a generator comprises a circular sheet. A round hole mating with a rotor is arranged at a central portion of the sheet. Multiple coil grooves and coil teeth are arranged sequentially at an inner circle of the sheet. The coil groove is a trapezoidal groove, and comprises a groove opening, a groove top and a groove bottom. The coil tooth is a rectangular tooth. A width ratio of the groove bottom to the coil tooth ranges from 1.8:1 to 2.3:1. A width ratio of the groove top to the coil tooth ranges from 1.2:1 to 1.7:1. In the invention, the special design of the coil grooves and the coil teeth enables the stamped sheet for a generator to have a high tooth flux density, such that a proportion of a final air-gap magnetomotive force with respect to a total magnetomotive force is small, and this results in magnetic saturation. Compared with a traditional generator, a generator adopting the invention has reduced power and volume, and a power density thereof is increased, thereby reducing the weight of the generator, and accordingly reducing the overall weight of a generator set.

Description

说明书 发明名称：发电机冲片  Instruction manual Name of the invention: Generator chip
技术领域  Technical field
[0001] 本发明涉及发电机技术领域， 具体涉及一种发电机冲片。  [0001] The present invention relates to the field of generator technology, and in particular, to a generator chip.
背景技术  Background technique
[0002] 发电机定子由定子铁芯、 定子绕组和机座三部分组成， 其中定子铁芯由高导磁 材料冲片重叠组合而成。 冲片的结构直接影响发电机的效率、 寿命、 性能和电 机的组装生产效率等。 然而现有技术中的定子冲片在设计过程中都是采用宽齿 窄槽的设计方式， 然而此种宽齿窄槽的设计方式存在以下问题： 因为齿宽过宽 ， 造成齿磁密较低， 轭部磁密也较低， 且槽型面积较小， 总体能承载的功率电 流受限制， 最终造成功率密度过小。 因为冲片槽较小， 无法形成磁场的密度饱 和。 因此， 现有技术发电机冲片存在功率密度过小和无法形成磁场密度饱和的 问题。  [0002] The generator stator is composed of a stator core, a stator winding and a base, wherein the stator core is formed by overlapping and stacking high-magnetic materials. The structure of the punch directly affects the efficiency, life, performance and assembly efficiency of the generator. However, in the prior art, the stator punching piece adopts a design of a wide-tooth narrow groove in the design process. However, the design method of the wide-tooth narrow groove has the following problems: Since the tooth width is too wide, the tooth magnetic density is low. The magnetic density of the yoke is also low, and the area of the slot is small, and the power current that can be carried by the whole is limited, and finally the power density is too small. Because the punching groove is small, the density of the magnetic field cannot be formed to be saturated. Therefore, the prior art generator chip has a problem that the power density is too small and the magnetic field density cannot be formed.
技术问题  technical problem
[0003] 为解决现有技术发电机冲片存在功率密度过小和无法形成磁场密度饱和的问题 ， 本发明提供一种发电机冲片。  [0003] In order to solve the problem that the prior art generator chip has a power density that is too small and the magnetic field density cannot be formed, the present invention provides a generator chip.
问题的解决方案  Problem solution
技术解决方案  Technical solution
[0004] 本发明发电机冲片包括环状结构的片体， 在所述片体的中部设置有与转子配合 的圆孔， 在片体的内圆上依次设置有多个线圈槽和线圈齿； 所述线圈槽为梯形 槽， 其包括槽口、 槽顶部和槽底部； 所述线圈齿为矩形齿， 所述槽底部的宽度 与所述线圈齿的宽度比为 1.8: 1至 2.3: 1， 所述槽顶部的宽度与所述线圈齿的宽度 比为 1.2: 1至 1.7: 1。  [0004] The generator chip of the present invention comprises a sheet body having an annular structure, and a circular hole is formed in a middle portion of the sheet body to be engaged with the rotor, and a plurality of coil grooves and coil teeth are sequentially disposed on the inner circle of the sheet body. The coil groove is a trapezoidal groove, which includes a notch, a groove top and a groove bottom; the coil teeth are rectangular teeth, and the width of the bottom of the groove is wider than the width of the coil teeth: 1.8:1 to 2.3:1 The ratio of the width of the top of the groove to the width of the coil teeth is 1.2:1 to 1.7:1.
[0005] 进一步地， 所述槽口的宽度为线圈齿宽度的 0.7至 0.8倍。  [0005] Further, the width of the notch is 0.7 to 0.8 times the width of the coil teeth.
[0006] 进一步地， 所述槽顶部和所述槽底部之间的高度是所述槽口的高度的 3至 3.5倍 [0007] 进一步地， 片体的外圆直径为 180mm-200mm， 片体的内圆直径为 90mm- 110m [0008] 进一步地， 所述线圈槽的数量为 24个。 [0006] Further, the height between the top of the groove and the bottom of the groove is 3 to 3.5 times the height of the notch. [0007] Further, the outer diameter of the sheet is 180 mm to 200 mm, and the sheet body The inner diameter of the circle is 90mm-110m [0008] Further, the number of the coil slots is 24.
[0009] 进一步地， 在片体的外环上设置有焊接缺口。  Further, a soldering notch is provided on the outer ring of the sheet.
[0010] 进一步地， 所述焊接缺口的截面形状为 "W"形。  [0010] Further, the cross-sectional shape of the soldering notch is "W" shape.
[0011] 进一步地， 所述焊接缺口的数量为 6个。  [0011] Further, the number of the soldering gaps is six.
发明的有益效果  Advantageous effects of the invention
有益效果  Beneficial effect
[0012] 本发明发电机冲片通过线圈槽和线圈齿的特殊设计， 使其拥有高的齿磁密， 让 最终的气隙磁势和总磁势比较， 占的比重不大， 最终形成磁饱和现象， 这样可 以实现功率体积的缩小， 压缩了传统发电机功率体积， 提高了其功率密度， 从 而将发电机部分重量降的更轻， 最终使总机组重量降低。  [0012] The generator chip of the invention has a special design of the coil groove and the coil tooth, so that it has a high magnetic density of the tooth, and the final air gap magnetic potential is compared with the total magnetic potential, and the proportion is not large, and finally the magnetic body is formed. Saturation phenomenon, which can reduce the power volume, compress the power volume of the traditional generator, increase its power density, and thus reduce the weight of the generator part, and finally reduce the weight of the total unit.
对附图的简要说明  Brief description of the drawing
附图说明  DRAWINGS
[0013] 图 1为本发明发电机冲片结构示意图。  1 is a schematic structural view of a generator chip according to the present invention.
[0014] 图 2为图 1中发电机冲片局部放大结构示意图。  2 is a partially enlarged schematic view of the generator chip of FIG. 1.
[0015] 下面结合附图和实施例对本发明作进一步的说明。  [0015] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
本发明的实施方式 Embodiments of the invention
[0016] 图 1为本发明发电机冲片结构示意图； 图 2为图 1中发电机冲片局部放大结构示 意图。 图中， 1为片体， 2为圆孔， 3为线圈槽， 4为线圈齿， 31为槽口， 32位槽 顶部， 33为槽底部， 5为焊接缺口。  1 is a schematic structural view of a generator chip according to the present invention; and FIG. 2 is a partially enlarged structural view of the generator chip of FIG. In the figure, 1 is a sheet, 2 is a circular hole, 3 is a coil groove, 4 is a coil tooth, 31 is a notch, a 32-bit groove is at the top, 33 is a groove bottom, and 5 is a welded notch.
[0017] 根据图 1和图 2可知， 发电机冲片包括环状结构的片体 1， 在片体 1的中部设置有 与转子配合的圆孔 2， 在片体 1的内圆上依次设置有多个线圈槽 3和线圈齿 4。 线 圈槽 3为梯形槽， 其包括槽口 31、 槽顶部 32和槽底部 33， 槽口 31与槽顶部 32相邻 ， 槽底部 33与槽顶部 32相对设置。 上述槽顶部 32是指线圈槽 3的宽度尺寸最宽的 部分， 即相当于梯形的下底； 上述槽底部 33是指线圈槽 3的宽度尺寸最窄的部份 ， 即相当于梯形的上底。 线圈齿 4为矩形齿， 槽底部 33的宽度与线圈齿 4的宽度 比为 1.8: 1至 2.3: 1， 槽顶部 32的宽度与线圈齿 4的宽度比为 1.2: 1至 1.7: 1。 槽口 31 的宽度为线圈齿 4宽度的 0.7至 0.8倍。 槽顶部 32和槽底部 33之间的高度是槽口 31 的高度的 3至 3.5倍。 片体 1的外圆直径为 180mm-200mm， 片体 1的内圆直径为 90 mm-110mm。 线圈槽 3的数量为 24个。 如此便使线圈槽 3的槽型是明显的宽幵口潜 底槽， 槽体积较大， 使槽漏电抗较大， 同吋拥有较高的齿磁密， 气隙磁势和总 磁势比较， 占的比重不大， 最终形成磁饱和现象， 这样可以实现功率体积的缩 小， 提高其功率密度， 保证发电机在额定负载运行吋的去磁反应能被有效的遏 制。 [0017] According to FIG. 1 and FIG. 2, the generator chip comprises a sheet body 1 of an annular structure, and a circular hole 2 is formed in the middle of the sheet body 1 to be engaged with the rotor, and is sequentially disposed on the inner circle of the sheet body 1. There are a plurality of coil slots 3 and coil teeth 4. The coil groove 3 is a trapezoidal groove including a notch 31, a groove top 32 and a groove bottom 33, the notch 31 being adjacent to the groove top 32, and the groove bottom 33 being disposed opposite the groove top 32. The groove top portion 32 refers to the portion of the coil groove 3 having the widest width dimension, that is, the lower base corresponding to the trapezoid; the groove bottom portion 33 refers to the portion of the coil groove 3 having the narrowest width dimension, that is, the upper portion corresponding to the trapezoid . The coil teeth 4 are rectangular teeth, the width of the groove bottom 33 and the width of the coil teeth 4 The ratio is 1.8:1 to 2.3: 1, and the ratio of the width of the groove top 32 to the width of the coil teeth 4 is 1.2:1 to 1.7:1. The width of the notch 31 is 0.7 to 0.8 times the width of the coil teeth 4. The height between the trough top 32 and the trough bottom 33 is 3 to 3.5 times the height of the notch 31. The outer diameter of the sheet 1 is 180 mm to 200 mm, and the inner diameter of the sheet 1 is 90 mm to 110 mm. The number of coil slots 3 is 24. Thus, the groove shape of the coil groove 3 is an obvious wide-mouthed bottom groove, the groove volume is large, the groove leakage reactance is large, the same tooth has a high magnetic density, and the air gap magnetic potential and the total magnetic potential are compared. , the proportion is not large, and finally form a magnetic saturation phenomenon, which can reduce the power volume, increase its power density, and ensure that the demagnetization reaction of the generator after the rated load operation can be effectively contained.
[0018] 在片体 1的外环上设置有焊接缺口 5， 焊接缺口 5的截面形状为 "W"形， 焊接缺 口 5的数量为 6个。  [0018] A welded notch 5 is provided on the outer ring of the sheet 1, and the cross-sectional shape of the welded notch 5 is "W", and the number of the welding notches 5 is six.
[0019] 本发明发电机冲片通过对线圈槽和线圈齿的特殊尺寸比例设计， 使其拥有高的 齿磁密， 让最终的气隙磁势和总磁势比较， 占的比重不大， 最终形成磁饱和现 象， 这样可以实现功率体积的缩小， 压缩了传统发电机功率体积， 提高了其功 率密度， 从而将发电机部分重量降的更轻， 最终使总机组重量降低。  [0019] The generator chip of the invention is designed by the special size ratio of the coil groove and the coil tooth, so that it has a high tooth magnetic density, and the final air gap magnetic potential and the total magnetic potential are compared, and the proportion is not large. Eventually, magnetic saturation is formed, which can reduce the power volume, compress the power volume of the traditional generator, and increase the power density, thereby reducing the weight of the generator part and making the total unit weight lower.
[0020] 以上所述仅为本发明的优选实施例而已， 并不用于限制本发明， 对于本领域的 技术人员来说， 凡在本发明的精神和原则之内， 所作的任何修改、 等同替换、 改进等， 均应包含在本发明的保护范围之内。  The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications and equivalents made by those skilled in the art within the spirit and principles of the present invention. And improvements, etc., are all included in the scope of protection of the present invention.

Claims

权利要求书 Claim
[权利要求 1] 一种发电机冲片， 包括环状结构的片体， 在所述片体的中部设置有与 转子配合的圆孔， 其特征在于： 在片体的内圆上依次设置有多个线圈 槽和线圈齿； 所述线圈槽为梯形槽， 其包括槽口、 槽顶部和槽底部； 所述线圈齿为矩形齿， 所述槽底部的宽度与所述线圈齿的宽度比为 1. 8: 1至 2.3: 1， 所述槽顶部的宽度与所述线圈齿的宽度比为 1.2: 1至 1.7: 1  [Claim 1] A generator punching piece comprising a sheet body having an annular structure, wherein a circular hole is formed in a middle portion of the sheet body to be engaged with the rotor, wherein: the inner circumference of the sheet body is sequentially disposed a plurality of coil slots and coil teeth; the coil slot is a trapezoidal slot comprising a slot, a slot top and a slot bottom; the coil teeth are rectangular teeth, and a width of the bottom of the slot is wider than a width of the coil teeth 1. 8: 1 to 2.3: 1, the width of the top of the groove and the width of the coil teeth are 1.2: 1 to 1.7: 1
[权利要求 2] 根据权利要求 1所述的发电机冲片， 其特征在于： 所述槽口的宽度为 线圈齿宽度的 0.7至 0.8倍。 [Claim 2] The generator chip according to claim 1, wherein: the width of the notch is 0.7 to 0.8 times the width of the coil teeth.
[权利要求 3] 根据权利要求 1所述的发电机冲片， 其特征在于： 所述槽顶部和所述 槽底部之间的高度是所述槽口的高度的 3至 3.5倍。 [Claim 3] The generator chip according to claim 1, wherein a height between the top of the groove and the bottom of the groove is 3 to 3.5 times the height of the notch.
[权利要求 4] 根据权利要求 1所述的发电机冲片， 其特征在于： 片体的外圆直径为 1 [Claim 4] The generator chip according to claim 1, wherein: the outer diameter of the body is 1
80mm-200mm， 片体的内圆直径为 90mm- 110mm。  80mm-200mm, the inner diameter of the sheet is 90mm-110mm.
[权利要求 5] 根据权利要求 1所述的发电机冲片， 其特征在于： 所述线圈槽的数量 为 24个。 [Claim 5] The generator chip according to claim 1, wherein the number of the coil slots is 24.
[权利要求 6] 根据权利要求 1所述的发电机冲片， 其特征在于： 在片体的外环上设 置有焊接缺口。  [Claim 6] The generator chip according to claim 1, wherein a welded notch is provided on an outer ring of the sheet.
[权利要求 7] 根据权利要求 6所述的发电机冲片， 其特征在于： 所述焊接缺口的截 面形状为" W"形。  [Claim 7] The generator chip according to claim 6, wherein the welded notch has a cross-sectional shape of a "W" shape.
[权利要求 8] 根据权利要求 7所述的发电机冲片， 其特征在于： 所述焊接缺口的数  [Claim 8] The generator chip according to claim 7, wherein: the number of the soldering gaps
PCT/CN2016/107141 2016-01-15 2016-11-24 Stamped sheet for generator WO2017121191A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201610027673.5 2016-01-15
CN201610027673.5A CN105576859A (en) 2016-01-15 2016-01-15 Generator punching plate

Publications (1)

Publication Number Publication Date
WO2017121191A1 true WO2017121191A1 (en) 2017-07-20

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PCT/CN2016/107141 WO2017121191A1 (en) 2016-01-15 2016-11-24 Stamped sheet for generator

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CN105576859A (en) * 2016-01-15 2016-05-11 重庆智仁发电设备有限责任公司 Generator punching plate

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CN105576859A (en) * 2016-01-15 2016-05-11 重庆智仁发电设备有限责任公司 Generator punching plate
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US7260880B2 (en) * 2002-05-16 2007-08-28 Mitsubishi Denki Kabushiki Kaisha Method for manufacturing a stator core for a dynamoelectric machine
CN2845297Y (en) * 2005-08-23 2006-12-06 浙江中源电气有限公司 Small permanent magnetic sychronous motor
CN204597648U (en) * 2015-05-18 2015-08-26 威灵（芜湖）电机制造有限公司 Stator punching, stator core, stator and motor
CN105471129A (en) * 2016-01-15 2016-04-06 重庆智仁发电设备有限责任公司 6-15KW low-power generator
CN105576859A (en) * 2016-01-15 2016-05-11 重庆智仁发电设备有限责任公司 Generator punching plate
CN205377477U (en) * 2016-01-15 2016-07-06 重庆智仁发电设备有限责任公司 Send out motor core

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