EP1575065A2 - Tôle de noyau pour composant inductif - Google Patents

Tôle de noyau pour composant inductif Download PDF

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Publication number
EP1575065A2
EP1575065A2 EP05004405A EP05004405A EP1575065A2 EP 1575065 A2 EP1575065 A2 EP 1575065A2 EP 05004405 A EP05004405 A EP 05004405A EP 05004405 A EP05004405 A EP 05004405A EP 1575065 A2 EP1575065 A2 EP 1575065A2
Authority
EP
European Patent Office
Prior art keywords
core sheet
sheet according
winding window
leg
radius
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.)
Withdrawn
Application number
EP05004405A
Other languages
German (de)
English (en)
Other versions
EP1575065A3 (fr
Inventor
Ernst Höfer
Bernhard Stiltz
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.)
Vossloh Schwabe Deutschland GmbH
Vossloh Schwabe GmbH
Original Assignee
Vossloh Schwabe Deutschland GmbH
Vossloh Schwabe GmbH
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 Vossloh Schwabe Deutschland GmbH, Vossloh Schwabe GmbH filed Critical Vossloh Schwabe Deutschland GmbH
Publication of EP1575065A2 publication Critical patent/EP1575065A2/fr
Publication of EP1575065A3 publication Critical patent/EP1575065A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/24—Magnetic cores
    • H01F27/245—Magnetic cores made from sheets, e.g. grain-oriented
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/08—High-leakage transformers or inductances
    • H01F38/10—Ballasts, e.g. for discharge lamps
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0206—Manufacturing of magnetic cores by mechanical means
    • H01F41/0233—Manufacturing of magnetic circuits made from sheets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F3/00—Cores, Yokes, or armatures
    • H01F3/02—Cores, Yokes, or armatures made from sheets

Definitions

  • the invention relates to a core sheet, as e.g. For the magnetic circuit of a series reactor or a transformer a lamp or other equipment used can be.
  • the DE 29 33 781 C2 an E-I-section in which both the required E sheets as well as the required I sheets from one single sheet metal strip can be punched out.
  • the punching process is essentially waste-free.
  • the I-plates caused by the free-punching of the winding window in the Sheet metal strip, from which then the E sheets are separated. Only small polygonal cutouts produce waste. These cutouts are at one point of the sheet metal strip adapted, with a middle leg and two outer thighs the later e-sheets abut each other. If necessary designed the I-sheet with a rectangular trapezoidal shape become. Further, it is possible to punch out 1-sheets, whose Length is less than the sum of the length of an outer leg and the middle leg.
  • the aim is the relatively expensive high permeable Use electrical sheet economically and on ready Built-up devices a high electrical performance at at the same time to achieve low weight.
  • the sheet metal section to improve known E-I sheets.
  • the sheet metal section of the invention leaves conventional Ways of thinking in which the shape of the I-sheet is determined by the shape the winding window was determined.
  • inventive Sheet metal section shows the shape of the I-plate deviations the shape of the edge of the winding window. These form deviations can help optimize the shape of the winding window be used, so this preferably at both Ends are rounded. This allows the accommodation coilless Windings with high winding window fill level. In order to can the relevant, built from the core sheets device be reduced compared to devices with worse degree of filling.
  • the outer legs are longer than the middle leg.
  • the I-core sheet can thus between the outer legs of the E-core sheet. His length is preferably less than the sum of the length of the inner leg and the outer thigh. This makes it possible, relatively to achieve large winding windows for a given outer contour.
  • the outer legs preferably close with an arcuate Transition section to the back portion of the E-sheet at.
  • the transition section preferably has one Width on the width of the outer leg and the Back section coincides.
  • the arcuate rounded corners of the winding window preferably have a radius that is greater than that Fivefold of the wire diameter of the wire from which a the winding window arranged winding is constructed.
  • the rounding radius is greater than ten times the wire diameter. This will be particularly high fill levels reached.
  • the outer corner radius of the transition section is preferably four times the rounding radius of Winding window. This results in a low-leakage structure of the E-sheet.
  • the winding window is preferably in two successive following punching steps generated. In the places which the second punching contour adjoins the first punching contour, are formed recesses. These cause a Tolerance compensation and thus avoid the emergence of sharp Edges or barbs on the edge of the winding window.
  • the back portion of the e-sheet is at one with the center leg aligned position preferably about provided triangular cutout. It thus arises Transition section between the back portion and the middle leg. This is preferably symmetrical to the aforementioned Transition section formed.
  • the cutout preferably has rounded edges whose radius of curvature coincides with the outer corner radius. This results a uniform flow distribution in the e-plate with less Scattering angle.
  • the cutout preferably has a corner-free arcuate conclusion that on the piece of waste to be punched out define a retaining lug. This facilitates the Guiding the waste part in the punching tool.
  • the I-sheet preferably has two the winding window limiting arcuate edge portions on whose radius greater than half the width of the winding window.
  • the winding window of the I-sheet is arcuate completed, with the width of the I-plate and thus the Width of the available for the magnetic flux Way is not significantly limited. Without the inclination to increase the formation of a magnetic stray field, In this way, a winding window shape is generated, which allows a high fill factor.
  • an inductive component 1 in the form of a Throttle or a transformer illustrated.
  • the component 1 has a magnetic circuit 2 and a Winding 3, provided for the two winding windows 4, 5 are.
  • the magnetic circuit 2 is constructed of individual sheets, that make an E / I cut. To him belong those in Figure 2 illustrated E sheets 6 and I sheets 7.
  • the E-plates and the 1-plates together form the magnetic circuit 2, the winding window 4, 5 are rounded and the leg having a relatively constant width.
  • the e-sheet 6 has two outer legs 8, 9 and a middle leg 11 on. The outer leg 8, 9 and the middle leg 11 are connected to each other via a back portion 12. Between the outer legs 8, 9 and the back section arcuate transition sections 13, 14 are arranged. These each have an outer corner radius Re on, the the width of the outer leg 8 and 9 corresponds. The of the corner radius Re certain arc goes to both his Ends each with a level 15, 16, 17, 18 in the subsequent straight edge of the outer leg 8, 9 or Back section 12 via.
  • the I-plate 7 has a width B 2 to be measured in extension of the mean distance of the center leg 11.
  • the outer legs 8, 9 each have a transverse to its longitudinal extent to be measured width B 1 .
  • the width B 2 is greater, preferably significantly greater than the width B 1 . This inevitably also the width of the winding window 4, 5, to measure transversely to the outer legs 8, 9, significantly larger than the width B 1 .
  • B 2 is less than the width of the center leg 11.
  • the width of the center leg 11 is preferably equal to the sum of the widths of the outer legs 8, 9, ie twice B 1 .
  • the magnetic circuit is characterized by the fact that everyone measured perpendicular to the respective magnetic flux direction Cross section is about the same size. There are exceptions only in the area of I-sheet 7. So-called Cutting edge losses (these are increased core losses, which is due to material deformation near the Punching edges result) are due to low existing Cut edge lengths and by the largely homogeneous magnetic field formation lowered. In particular, the E-sheet of the magnetic circuit has no non-functional areas. Much more the magnetic flux is relatively uniform over the whole E sheet metal distributed.
  • the back portion 12 is in alignment with its middle leg 11 on the side facing away from this with a section 19 provided, which increases separately in Figure 3 is shown.
  • the cutout 19 is approximately triangular and connects to the straight edges of the spine portion 12 with steps 21, 22 on. Starting from these extend rounded edges 23, 24 to a conclusion 25, at which the Connect edges 23, 24 to each other without corners.
  • the conclusion 25 is through an opening in the form of a pointed arch or a round arch formed, whose legs are s-shaped at the edges 23, 24 connect.
  • the edges 23, 24 point a radius of curvature R on with the corner radius Re matches.
  • the profile of the winding window 4 or 5 results from Figure 4.
  • Its edge 26 is defined by two overlapping ones Sections 27, 28 set, each one part of the edge contour determine.
  • the section 27 corresponds in its outline the shape of the I-plate 7.
  • the section 28 joins the Section 27 and relates to the back portion 12 facing End of the winding window 4 or 5.
  • the section 28 is at both ends 31, 32, at which it to the section 27 adjoins, led outwards in a bulge, the in the edge 26 forms a recess.
  • the bulge 31 goes then again into a straight section 33 over.
  • In the transition to the back section he is again something outward guided and rounded with a rounding radius 34.
  • This is significantly larger than the wire diameter of the winding 3 used wire.
  • it is about one Quarter of the corner radius Re.
  • a rounding radius 35 formed on the opposite corner.
  • the section 27, which determines the contour of the I-plate 7, has at its end on one side an arcuate curved Section 36, whose length is about the width of the winding window corresponds and whose radius of curvature Rk is greater than the width of the section 27.
  • the I-plate 7 As can be seen from Figure 2, on which the winding window 4 or 5 overlapping area, a curved edge on. Between both curved sections 36 is a straight section 37 provided, the width of the width of the middle leg 11 corresponds and thus can lie flat against this.
  • the production of the E sheets 6 and I sheets 7 goes from a dashed lines shown in Figure 5 metal strip 41st out.
  • the E sheets 6 and I sheets 7 to be produced are dashed shown.
  • This metal strip 41 is provided with a Step through a punching tool, which is the External distance of the outer leg 8, 9 corresponds.
  • the step size is designated in Figure 5 with S and indicated schematically.
  • In a first punching step four cuts 27 attached so that the corresponding I-plates in the same Alignment, i. with their sections 36, for example invariably pointing to the right or to the left are.
  • This punching stage is designated A in FIG.
  • stage C the cutouts will be 19 generates and the still to be generated center leg 11 in a free cut from their opposite still too generating outer legs 8, 9 separately. Besides, you can the later spine portions 12 a cut attached be who sets the cut 19 on the outer edge of the sheet.
  • stage D will be now Sections 49 attached to produce the corner radii Re.
  • the recesses 38, 39 are released. In order to All non-linear contours are made.
  • last Punching steps E, F (see also Figure 7) are the E sheets 6 isolated.
  • the illustrated in Figure 1 magnetic circuit 2 is suitable in particular for the production of winding-less inductive Components.
  • the presented magnetic circuit 2 is also magnetically optimized. He has a very small one Stray field on and even if it is made of highly permeable Material is manufactured with crease line and with high modulation is operated.
  • the presented sheet metal section consisting of an E-sheet 6 and an I-plate 7, partially arcuate limited winding window 4, 5, the contour of which is not with the Contour of the I-plate 7 matches. Nevertheless, the I-sheet is 7 when punching the winding window 4, 5 won the be prepared in at least two punching steps.
  • the outer contour of the magnetic circuit is essentially through set the e-plate 6. This points at least in the area his back section 12 corner radii and a section 19, which also has rounded edges 23, 24 is provided.
  • the thus formed I / I section draws through a uniform magnetic material utilization and also at high modulation by a low stray field out. He also has a very low performance for a given performance Construction volume and a low weight. Not needed Material sections are removed in the punching process and can be recycled.
  • the E-plate 6 and the I-plate 7 can both in the stamping process and in other separation processes be separated from a metal strip.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Coils Of Transformers For General Uses (AREA)
EP05004405A 2004-03-12 2005-03-01 Tôle de noyau pour composant inductif Withdrawn EP1575065A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004012436 2004-03-12
DE200410012436 DE102004012436B4 (de) 2004-03-12 2004-03-12 Kernblech für induktives Bauelement

Publications (2)

Publication Number Publication Date
EP1575065A2 true EP1575065A2 (fr) 2005-09-14
EP1575065A3 EP1575065A3 (fr) 2008-07-09

Family

ID=34813696

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05004405A Withdrawn EP1575065A3 (fr) 2004-03-12 2005-03-01 Tôle de noyau pour composant inductif

Country Status (2)

Country Link
EP (1) EP1575065A3 (fr)
DE (1) DE102004012436B4 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103985603A (zh) * 2014-05-30 2014-08-13 成都海沃斯电气技术有限公司 一种轻量化交流接触器铁芯及其制造方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008004555B4 (de) 2008-01-15 2010-07-29 Vossloh-Schwabe Deutschland Gmbh Kernblechsatz für induktive Bauelemente

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2371050A1 (fr) 1976-11-16 1978-06-09 Bertus Ag Appareil auxiliaire ou similaire avec toles de noyau en e et en i
DE3030641A1 (de) 1980-08-13 1982-04-01 Siemens AG, 1000 Berlin und 8000 München Unter einschluss von kleinen eisenteilchen geformter magnetkern und verfahren zur herstellung des magnetkerns
DE2933781C2 (de) 1979-08-21 1982-10-07 Fa. Hermann Schwabe, 7067 Urbach Verfahren zum Herstellen E-förmiger Kernbleche und I-förmiger Rückschlußbleche einer Drossel oder eines Transformators insbesondere für Gasentladungslampen

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE159059C (fr) *
CH484501A (de) * 1967-12-29 1970-01-15 Leuenberger H Verfahren zur Herstellung eines Blechpaketes
DE3402036C1 (de) * 1984-01-21 1985-07-11 Schwabe GmbH & Co KG Elektrotechnische Fabrik, 7067 Urbach Verfahren zum Herstellen E-förmiger Kernbleche und I-förmiger Rückschlußbleche einer Drossel oder eines Transformators, insbesondere für Gasentladungslampen
EP0571242A1 (fr) * 1992-05-21 1993-11-24 Acec Ballasts Circuit magnétique à entrefer, en particulier pour ballasts pour lampes à décharge, et son procédé de fabrication
ATE130119T1 (de) * 1992-07-20 1995-11-15 Knobel Lichttech Verfahren zur herstellung einer drossel oder eines transformators mit aus zwei u-förmigen blechen gebildeten e-förmigen kernblechen.
US5816894A (en) * 1994-12-16 1998-10-06 Hitachi Metals, Ltd. Gap-providing ferrite core half and method for producing same
DE19645098C2 (de) * 1996-11-01 2000-09-21 Vossloh Schwabe Gmbh Drossel und Verfahren zu deren Herstellung

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2371050A1 (fr) 1976-11-16 1978-06-09 Bertus Ag Appareil auxiliaire ou similaire avec toles de noyau en e et en i
DE2933781C2 (de) 1979-08-21 1982-10-07 Fa. Hermann Schwabe, 7067 Urbach Verfahren zum Herstellen E-förmiger Kernbleche und I-förmiger Rückschlußbleche einer Drossel oder eines Transformators insbesondere für Gasentladungslampen
DE3030641A1 (de) 1980-08-13 1982-04-01 Siemens AG, 1000 Berlin und 8000 München Unter einschluss von kleinen eisenteilchen geformter magnetkern und verfahren zur herstellung des magnetkerns

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103985603A (zh) * 2014-05-30 2014-08-13 成都海沃斯电气技术有限公司 一种轻量化交流接触器铁芯及其制造方法
CN103985603B (zh) * 2014-05-30 2015-08-05 成都海沃斯电气技术有限公司 一种轻量化交流接触器铁芯及其制造方法

Also Published As

Publication number Publication date
DE102004012436B4 (de) 2006-04-20
DE102004012436A1 (de) 2005-09-29
EP1575065A3 (fr) 2008-07-09

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