EP2751815A1 - Inductance et son procédé de fabrication - Google Patents

Inductance et son procédé de fabrication

Info

Publication number
EP2751815A1
EP2751815A1 EP12753104.4A EP12753104A EP2751815A1 EP 2751815 A1 EP2751815 A1 EP 2751815A1 EP 12753104 A EP12753104 A EP 12753104A EP 2751815 A1 EP2751815 A1 EP 2751815A1
Authority
EP
European Patent Office
Prior art keywords
winding
conductor
core
throttle
carrying capacity
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.)
Granted
Application number
EP12753104.4A
Other languages
German (de)
English (en)
Other versions
EP2751815B1 (fr
Inventor
Dirk Schekulin
Silvia GROSS-KÄUFLER
Chriss HÄRTSCH
Thomas Bisig
Alex Itten
Piere CAVIN
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.)
Schmidhauser AG
Original Assignee
Schmidhauser AG
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 Schmidhauser AG filed Critical Schmidhauser AG
Publication of EP2751815A1 publication Critical patent/EP2751815A1/fr
Application granted granted Critical
Publication of EP2751815B1 publication Critical patent/EP2751815B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • H01F27/008—Details of transformers or inductances, in general with temperature compensation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F37/00—Fixed inductances not covered by group H01F17/00
    • 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
    • H01F27/08—Cooling; Ventilating
    • H01F27/22—Cooling by heat conduction through solid or powdered fillings
    • 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
    • H01F27/28—Coils; Windings; Conductive connections
    • 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
    • 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
    • H01F41/04—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 for manufacturing coils
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/4902—Electromagnet, transformer or inductor

Definitions

  • the invention relates to a throttle and an associated manufacturing method.
  • Chokes are preferably used to integrate pulsed voltage signals, e.g. used in DC controllers. Significant problems with regard to losses and cooling of the winding arise in particular at high mean currents with significant current ripple.
  • Conventional windings of storage chokes are formed, for example, of layered sheet metal structures, flat wire core windings, and copper tape windings.
  • Core materials include ferrite, amorphous metal glass, nanocrystalline ribbons or metal powders.
  • the invention has for its object to provide a throttle and an associated manufacturing method available that allow efficient cooling of the throttle with the least possible effort.
  • the choke in particular in the form of a so-called memory or high-current choke, has a magnetic or magnetizable core, which defines a winding axis or a winding axis, and at least one winding, which is formed by a conductor, the at least one winding axis the core or a leg of the core, through which the at least one winding axis extends, at least partially, in particular with the smallest possible distance, surrounds.
  • the at least one winding is formed in one layer, ie turns formed by the conductor only run adjacent and are not layered.
  • a cross section of the conductor in the winding direction is rectangular, in particular square.
  • the winding can be coupled very easily and with low thermal resistance, for example to a cooling surface.
  • the cross section of the particular massive winding or the solid conductor is deliberately oversized, so that an efficient heat flow within the winding is possible.
  • the throttle has a magnetic or magnetizable core, in which the dehumidification takes place substantially via the winding thermally coupled to the core. Due to the choice of a large solid conductor or winding cross-section sufficient heat flow and thus the dehumidification is possible for example via a one-sided water-cooled plate.
  • the ladder is massive, i. the complete cross-section of the conductor is filled with conductor material or the conductor is completely filled within its outer dimension with conductor material.
  • the conductor is not constructed by interwoven strands, a plurality of combined individual conductors, as a waveguide or the like.
  • the at least one winding of a profile tube, in particular a rectangular profile raw r formed, which is structured to form the conductor, in particular by a material-removing machining is structured, in particular by drilling, sawing, milling and / or spark erosion is structured.
  • the at least one winding is formed from a die-cast molding.
  • the inductor has a rated current carrying capacity, wherein the cross section of the conductor is dimensioned such that a current carrying capacity of the conductor is greater than the rated current carrying capacity, ie the cross section of the conductor is oversized relative to the nominal current carrying capacity.
  • the winding and the core can be dimensioned such that, when the reactor is loaded with its rated current carrying capacity, the winding losses are greater than the core losses, so that overall efficient cooling can be ensured on account of the optimized cooling capability of the winding.
  • the conductor consists of copper or titanium, particularly preferably aluminum.
  • a planar cooling element is provided, which is thermally coupled to the winding, in particular to the side or surface of the winding facing away from the winding axis of the core.
  • a heat-conducting electrical insulator is provided, which is arranged between the cooling element and the winding.
  • the electrical insulator is preferably an electrically insulating heat conducting foil.
  • the winding forms a heat sink.
  • a distance between the winding and the core is selected such that the losses due to stray fields are minimized.
  • the winding is formed from a profile tube, in particular from a rectangular profile tube, which is structured to form the conductor, in particular by material-removing machining in the form of drilling, sawing, milling and / or spark erosion of the profile tube.
  • Fig. 1 is an illustration of a throttle according to the invention with cooling element
  • Fig. 2 is an exploded view of the throttle shown in Fig. 1.
  • 1 shows a storage choke 1 for high currents, for example 200 amps or more, with an El-shaped, magnetizable core 2, for example of ferrite, amorphous metal glass, nanocrystalline ribbons or metal powders as core material, with a limb defining a winding axis 3 , and a single-layer winding 4, which is formed by a solid conductor 5 made of aluminum with a rectangular cross-section, which surrounds the winding axis 3 of the core 2 in an annular manner.
  • an El-shaped, magnetizable core 2 for example of ferrite, amorphous metal glass, nanocrystalline ribbons or metal powders as core material
  • a limb defining a winding axis 3
  • a single-layer winding 4 which is formed by a solid conductor 5 made of aluminum with a rectangular cross-section, which surrounds the winding axis 3 of the core 2 in an annular manner.
  • the reactor 1 has a rated current carrying capacity of nominal 200 A average current, wherein the cross section of the conductor 5 is dimensioned such that it can lead more than the nominal current.
  • the winding 4 and the core 2 are dimensioned such that at a load of the reactor 1 with the nominal current winding losses are greater than core losses, so that by means of cooling the winding 4, which can be designed much easier than cooling the core 2, the Heat generated during operation is easily dissipated.
  • a flat cooling element 7 is further provided, which is thermally coupled to the side facing away from the winding axis 3 of the core 2 side or surface of the winding 4, wherein between the cooling element 7 and the winding 4, a heat-conducting electrical insulator in the form of a electrically insulating heat-conducting foil 8 is provided.
  • Corresponding cooling elements may be provided on the upper side and / or the lower side of the winding 4.
  • a distance between the leg of the core 2 and the leg facing surface of the winding 4 is set so low that leakage losses are minimized.
  • the cross-section of the conductor 5 is dimensioned such that at a designated operating frequency, the throttle 1, the current through Verdichtverdrän- As a result, the dominant AC loss component in the outer region of the conductor 5 or the winding 4 flows in the direction of the core region of the winding 4 and finally along the winding 4 for thermal sink in the form of the Cooling element 7.
  • Holes 10 serve as connection elements for further, not shown circuit parts of a circuit which uses the throttle 1.
  • FIG. 2 shows an exploded view of the throttle 1 shown in FIG. 1 for clarification.
  • the structuring is carried out by helical milling to form the winding 4 and the conductor 5, wherein by sawing in the transverse direction of the profile tube 6 individual winding segments are generated, each forming together with an associated core and the other components shown a respective coil. By drilling the terminals 10 are generated.
  • the winding 4 may alternatively be formed from a die-cast molding.
  • a massive winding 4 which has square or rectangular outer dimensions.
  • the winding 4 can be coupled very easily and with low thermal resistance to a cooling surface 7.
  • the cross section of the massive winding 4 is deliberately oversized, so that a efficient heat flow within the winding 4 is possible, ie the winding 4 is also the inner heat sink of the device. 1
  • the electrical insulation of the winding 4 against the cooling plate or the heat sink 7 is carried out with a thin heat-conducting foil 8 or ceramic material.
  • the material of the winding 4 is aluminum, copper or titanium.
  • aluminum can be used as a conductor material due to the large cross section, whereby weight and cost can be saved.
  • the reactor 1 according to the invention has a massive winding whose cross-section is dimensioned so large that a transport of the resulting heat loss to a flat heat sink 7 is possible, so that expensive cooling measures can be omitted.
  • a differently shaped core can be used, for example, a U-shaped core with two outer windings.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Fuses (AREA)

Abstract

L'invention concerne une inductance (1) comprenant un noyau (2) magnétisable présentant un axe d'enroulement (3), ainsi qu'au moins un enroulement (4) formé par un conducteur (5) qui entoure au moins partiellement l'axe d'enroulement du noyau. Selon l'invention, l'enroulement est formé d'une seule couche et une section du conducteur est rectangulaire, en particulier carrée.
EP12753104.4A 2011-09-02 2012-08-20 Inductance Active EP2751815B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011082045A DE102011082045A1 (de) 2011-09-02 2011-09-02 Drossel und zugehöriges Herstellungsverfahren
PCT/EP2012/066205 WO2013030029A1 (fr) 2011-09-02 2012-08-20 Inductance et son procédé de fabrication

Publications (2)

Publication Number Publication Date
EP2751815A1 true EP2751815A1 (fr) 2014-07-09
EP2751815B1 EP2751815B1 (fr) 2019-01-16

Family

ID=46758739

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12753104.4A Active EP2751815B1 (fr) 2011-09-02 2012-08-20 Inductance

Country Status (5)

Country Link
US (1) US10699836B2 (fr)
EP (1) EP2751815B1 (fr)
CN (2) CN104040653A (fr)
DE (1) DE102011082045A1 (fr)
WO (1) WO2013030029A1 (fr)

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DE102013208653A1 (de) 2013-05-10 2014-11-13 Sts Spezial-Transformatoren-Stockach Gmbh & Co. Kg Induktives Bauteil
JP5751293B2 (ja) * 2013-08-13 2015-07-22 Tdk株式会社 プリント基板及び電源装置
DE102013221442B4 (de) * 2013-10-22 2021-06-24 Sts Spezial-Transformatoren-Stockach Gmbh & Co. Kg Induktives Bauteil mit reduziertem Leerraum
DE102019103895A1 (de) * 2019-02-15 2020-08-20 Tdk Electronics Ag Spule und Verfahren zur Herstellung der Spule
CN110660563A (zh) * 2019-10-12 2020-01-07 台达电子企业管理（上海）有限公司 磁性组件及电源模块
CN114078623A (zh) * 2020-08-20 2022-02-22 Tdk株式会社 线圈部件以及搭载其的开关电源装置
EP3992997A1 (fr) * 2020-10-28 2022-05-04 ETA Green Power Ltd. Bobine d'inductance
US20220359118A1 (en) * 2021-05-07 2022-11-10 Applied Materials, Inc. High current ribbon inductor
GB2608392B (en) * 2021-06-29 2024-02-28 Murata Manufacturing Co Electrical device

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Also Published As

Publication number Publication date
WO2013030029A1 (fr) 2013-03-07
CN104040653A (zh) 2014-09-10
EP2751815B1 (fr) 2019-01-16
US10699836B2 (en) 2020-06-30
CN109637774A (zh) 2019-04-16
US20140327505A1 (en) 2014-11-06
DE102011082045A1 (de) 2013-03-07

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