EP3172748A1 - Petit transformateur haute tension à noyau en u - Google Patents

Petit transformateur haute tension à noyau en u

Info

Publication number
EP3172748A1
EP3172748A1 EP15739610.2A EP15739610A EP3172748A1 EP 3172748 A1 EP3172748 A1 EP 3172748A1 EP 15739610 A EP15739610 A EP 15739610A EP 3172748 A1 EP3172748 A1 EP 3172748A1
Authority
EP
European Patent Office
Prior art keywords
leg
winding
small transformer
magnetic
transformer
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Withdrawn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
EP15739610.2A
Other languages
German (de)
English (en)
Inventor
Roman Schichl
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.)
Sumida Components and Modules GmbH
Original Assignee
Sumida Components and Modules 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 Sumida Components and Modules GmbH filed Critical Sumida Components and Modules GmbH
Publication of EP3172748A1 publication Critical patent/EP3172748A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F3/00—Cores, Yokes, or armatures
    • H01F3/10—Composite arrangements of magnetic circuits
    • H01F3/14—Constrictions; Gaps, e.g. air-gaps
    • 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

Definitions

  • the present invention relates generally to inductive components, and more particularly to low volume transformers designed for a high output voltage.
  • inductive components and above all transformers have to be developed taking into account numerous parameters influencing the performance, since a suitable adaptation of an inductive component of numerous factors, such as the shape of the magnetic core, the type of ferrite material used, the wiring in the windings , and generally the circuit topology depends.
  • a reduction in the size of the components is desired, in particular the achievement of a sufficiently high power density for specially selected component dimensions of inductive components is associated with great effort, since numerous given by the properties of the magnetic materials physical boundary conditions are met, so that Different solutions may lead to different final results, but then may not behave in the same way in the target application.
  • a high operating voltage is required, at least in certain operating phases, so that in addition to the difficulties that have to be managed due to a desired compact design, other problems are to be considered, resulting from the high operating voltage.
  • An example of the use of small high-performance transformers, which must deliver a high output voltage, is the use in connection with certain light sources, such as Xe Non-lights, and the like, since at least for igniting the light source, a relatively high voltage of up to 30 kV is required here.
  • light sources such as Xe Non-lights, and the like
  • the size and shape of the corresponding electronic board of the shape and size of the bulb to adapt to achieve a compact overall design. Due to these requirements, therefore, small dimensions are required for corresponding transformers, which nevertheless have to meet the requirements with regard to the power density, the operating temperature, the electromagnetic behavior, the insulation resistance and the like. For example, with a power range of a few 10 W, as is typical for modern gas discharge lamps, adaptation to the oblong shape of the gas discharge flask may require certain lateral dimensions which must not be exceeded by the inductive component, to give the overall desired shape adaptation of the electronic Board enable.
  • ferrite cores are available in many standard sizes and with many standard ferrite materials, however, in the size range of cores having a magnetic effective volume of about 1000 mm 3 or less, the required component properties with a closed core geometry, such as a relatively compact design with good thermal performance and relatively low susceptibility, optionally can not be achieved, to provide sufficient power at a desired compact design of the transformer. That is, often a linear core form is used for transformers to achieve compact dimensions in at least one dimension, with a somewhat lower efficiency magnetic design compared to nearly closed magnetic circuit transformers.
  • toroidal cores or other closed magnetic systems are often not compatible in terms of the available volume of construction, especially in critical applications, such as Mobile devices, automobiles, and the like.
  • the above object is achieved by a high-voltage small transformer having a first winding and a second winding, wherein the first winding is constructed of two windings.
  • the high voltage miniature transformer further comprises a core material, not provided as a closed magnetic circuit, having a first leg, a second leg, and a connecting portion (137) connecting the first leg (131) and the second leg (132), the first winding and the second winding the first leg are arranged.
  • the small transformer according to the invention for high output voltage thus has a first winding as a primary winding, which contains only two turns, so that in particular in the longitudinal direction of the windings, an extremely compact construction can be achieved.
  • the number of turns can also be reduced in this winding compared to rod core assemblies having more than two turns in the first winding.
  • the overall length of the small transformer can be reduced without adversely affecting the required insulation strength characteristics between and between the individual windings.
  • the small transformer according to the invention has a core geometry which on the one hand represents a non-closed core architecture, as is typically used in applications which have already been described above, but which differs significantly from the previously described fungal structure.
  • the high voltage transformer according to the invention has a first leg and a second leg which are connected to each other, wherein the first and the second winding are arranged on the first leg.
  • a core geometry with a first leg and a second leg can be manufactured much more efficiently and inexpensively compared to, for example, a rod core with associated end plates, which thus represents a mushroom structure, for example in a U-shape, so that the total cost of the transformer efficient production of the core material and the simplified assembly of the windings on the leg can be significantly reduced.
  • the core geometry with a first leg and a second leg has the advantage that corresponding shapes for pressing and sintering of the core material can be provided as multiple forms, so that several cores for the small transformer according to the invention can be produced in a single operation.
  • the first leg has a larger magnetic cross-section than the second leg.
  • the first leg of the core material acts substantially like a rod core surrounded by the first winding and the second winding such that the magnetic cross section of the first leg substantially affects the magnetic, mechanical and thermal properties of the first leg. Shafts of the small transformer determined.
  • the second leg connected to the first leg has a much smaller magnetic cross-section and thus smaller dimensions, but nevertheless contributes significantly to the overall magnetic properties, for example by the additional material in the second leg a required size of the inductance or the A L - Value of the core material.
  • the total leakage inductance of the entire core material can be effectively determined so that a leakage inductance required for the required pulse width of the ignition pulse is well achieved, but the spatial extent of the stray field due to Overall very compact design of the core material with first and second leg can be kept small. As a result, if necessary, further shielding measures for shielding the stray field can be avoided.
  • the magnetic cross section of the first leg is at least twice as large as the magnetic cross section of the second leg. Due to this geometrical property of the core material, the distance between the first leg and the second leg can be reduced without unnecessarily restricting the space area provided for the first winding and the second winding, which are guided around the first leg. That is, the substantially parallel legs of the core material have a distance that the inclusion of the first and the second winding on the first leg allows, but due to the reduced magnetic cross-section, the total extension of the core material of the first and the second leg in the direction perpendicular to the magnetic longitudinal direction is not unnecessarily increased.
  • the smaller magnetic cross-section of the second leg is correspondingly reduced due to a reduction in the dimensions of the second leg in the direction of the distance between the first leg and the second leg, whereas in the latter vertical direction, the dimension of the second leg for manufacturing reasons preferably corresponds to the dimension of the first leg.
  • the first limb has an end region which is not enclosed by the first and the second winding and which is magnetically coupled via a gap to the second limb.
  • the gap realizes a non-closed core geometry which, for example, corresponds to a U-shape.
  • the gap between the first leg and the second leg is also a suitable measure to be able to push the first winding and the second winding unhindered on the first leg during assembly of the small transformer.
  • the magnetic cross section of the end region of the first leg is equal to the magnetic cross section of the part of the first leg, on which the first and the second winding are arranged. That is, the first leg has a nearly constant magnetic cross section over at least a substantial portion of its length so that the first and second windings can be suitably applied.
  • the open-ended end portion of the first leg has no magnetic extension portions, such as end plates, and the like, so as to enable efficient production of the core material of the small-size transformer as described above.
  • the core material in the region of the gap on a coupling part which is spaced from the first leg and / or the second leg.
  • the coupling part in the gap between the first leg and the second leg can further improve the magnetic properties by the magnetic coupling between the first leg and the second leg is increased.
  • the air gaps created by the presence of the coupling part in the gap significantly reduce the length of the resulting air gaps compared to the geometry without the coupling part, without, however, impairing the efficiency of mounting the first and second windings on the first leg.
  • the coupling part which itself may be of simple geometric structure, for instance in the shape of a cuboid, or the like, significantly improves the magnetic inference between the first leg and the second leg, without, however, additional complexity in the production of the core material or during assembly of the small transformer.
  • the coupling part is at least partially received in a recess of a bobbin.
  • the first winding and the second winding are applied to a bobbin, so that there is a precise and reproducible winding system of the small transformer, in this embodiment, in addition, the bobbin is designed so that the coupling member is received therein and thus in a precise manner in relation is positioned to the first leg and the second leg in the assembly of the small transformer.
  • the length of the first leg ie the dimension in the magnetic longitudinal direction, is equal to or less than 22 mm.
  • the magnetic cross section of the first leg is 50 mm 2 or smaller, preferably 30 mm 2 or smaller, so that in conjunction with the previously described length of the first leg also in the directions perpendicular thereto results in a very compact structure.
  • a distance between the first leg and the second leg in the region of the first and the second winding is 5 mm or smaller.
  • the spacing is sufficient to accommodate the first and second windings on the first leg as well as to ensure the necessary isolation structures between the windings and the second leg.
  • reduced values can also be achieved in the dimensions perpendicular to the magnetic longitudinal direction, so that the overall te construction volume of the small transformer is low.
  • FIG. 1A is a perspective view of a high voltage transformer according to the present invention.
  • FIG. 1B shows a front view of the small transformer
  • FIG. 1C shows a side view of the small transformer
  • Figure 1 D shows a sectional view along the line B-B of Figure 1C shows and
  • Figure 2 shows schematically a perspective view of a small transformer according to another embodiment.
  • FIG. 1A schematically illustrates a perspective view of a small transformer 100 according to an illustrative embodiment of the present invention.
  • the miniature transformer 100 which in illustrative embodiments transforms an input voltage of several 10V to several 100V to a relatively high output voltage in the range of several 100V to several tens of thousands of volts, is particularly desirable for its compact design for automotive and automotive applications and the like, when relatively high output voltages are required.
  • the small transformer 100 comprises a first winding 110, which is composed of two windings 11 1 and 112.
  • the two windings for the first winding 110 are suitable for ensuring a sufficient coupling to a second winding 120 in the case of a transformer with non-closed core geometry, so that the required high output voltage is achieved.
  • the second winding 120 is divided into individual winding sections 121, 122 and 123 in the illustrated embodiment. These winding sections typically contain several layers in order to achieve the required number of turns. For example, 50 turns or more, about 100 turns, and more are provided in the second winding 120.
  • the first winding 1 10 with only two turns, that for a desired high output voltage of the small transformer 100 and the number of turns of the second winding 120 can be reduced.
  • the advantages of a non-closed magnetic circuit with respect to the overall dimensions can be maintained to a particular extent and the small extension of the transformer in the longitudinal direction L as well as the small dimensions in the perpendicular directions B, H contribute to that as well the volume of the stray field is reduced compared to conventional designs.
  • output voltages at an input voltage of several tens of volts reaching 1000V or more of 10,000V, such as for lighting discharge lights in a mobile area, vehicles, etc. may be required is.
  • connection elements 1 13 and 114 respectively, which allow an electrical series connection of the two windings in the same direction or, in general, a contacting of the two windings.
  • these connection elements may be formed as contact pins for connection to a printed circuit board or other carrier material.
  • the connection elements 1 13, 114 are integral components of self-supporting conductor bars, stamped sheet metal parts, etc., which form the first and the second winding 11 1, 1 12.
  • the small transformer 100 includes a bobbin 140 that serves to receive the first winding 110 and the second winding 120.
  • the bobbin 140 corresponding recesses for receiving the windings 11 1 and 112 from. These material recesses thus serve as corresponding chambers, which, however, have only a small extension in the longitudinal direction L, so that the turns 11 1 and 12 can be precisely positioned. Further are thus the windings 1 11, 1 12 separated with insulating material in the longitudinal direction L, so that a high insulation strength between the first winding 110 and the second winding 120 is formed.
  • the position and insulation properties of the first winding 1 10 by constructive measures, that is defined by the structure of the bobbin 140, in a precise and reproducible manner.
  • the small transformer 100 includes a magnetic core material 130 that forms a non-closed core geometry. That is, the core material 130 has at least one interruption, resulting in an air gap.
  • the core material 130 includes a first leg 131 and a second leg 132 that are magnetically interconnected by a connector (not shown in FIG. 1A).
  • the core material 130 further comprises a coupling part 135, which is in a gap 136 between an end portion 131 E of the first leg 131, which is not enclosed by the bobbin 140 and thus by the first winding 1 10 and the second winding 120, is formed with the second leg 132.
  • the coupling member 135 is received in a recess 141 of the bobbin 140, so that the coupling member 135 in a precise manner with respect to the first leg
  • the coupling member may be otherwise secured in the gap 136.
  • first leg 131 and the second leg form
  • a U-shaped core geometry that provides the required magnetic properties of the small transformer 100, wherein the optional coupling part 135, a reduction of the effectively effective gap 136 after mounting the bobbin 140 on the first leg 131 allows.
  • an uncoated magnetic circuit geometry is used in which, although the magnetic properties are less favorable compared to a substantially closed core material, but overall smaller dimensions are reachable. For example, for the embodiment shown, a dimension in the longitudinal direction L of 22 mm or smaller, about a length in the range of 18-22 mm.
  • the magnetic cross section 131 F of the first leg 131 can be significantly larger than the magnetic cross section 132 F of the second leg 132, since the second leg 132 substantially only as a conclusion for the magnetic field of the first leg 131 and serves to adjust the total inductance of the core material 130. That is, it has been recognized that during certain operating phases saturation of the core material 130 occurs anyway, so that a reduction of the cross section 132F compared to the cross section 131 F is possible without losing the required magnetic properties.
  • the second leg 132 which thus forms part of a U-shaped core structure, a desired higher inductance value can be achieved, for example with regard to a possibly required current-limiting effect of the small transformer 100 in certain phases of operation, in particular the production of the core material 130 can be done much more efficiently than could be accomplished, for example, for a linear core geometry with corresponding end plates. That is, due to the U-shaped structure of the essential component of the core material 130, ie, the legs 131, 132 and the connecting part, not shown, a simple structure of the legs 131 and 132 can be maintained without corresponding end plates, whereby the production of the core material 130 itself as well as the installation of the small transformer 100 can be accomplished cheaper.
  • the optional coupling 135 may be provided to improve the inference in the gap 136 without, however, having a negative impact on both the assembly of the small transformer 100 and the production of the core material 130.
  • the cross-sectional area 131 F has an area of 50 mm 2 or smaller, preferably 30 mm 2 or smaller.
  • the cross-sectional area 131F is substantially square, eg, 4.8mm x 5.2mm, while the cross-section 132F of the second leg 132 is rectangular and, for example, half or significantly less of the cross-sectional area 131F.
  • approximately the cross-sectional area 132F in the direction B preferably has the same dimension as the cross-section 131F, so that the significantly reduced cross-section 132F results in a correspondingly smaller dimension in the lateral direction H as compared to the cross-section 131F.
  • the coupling part 135 can be adapted to the corresponding dimensions of the legs 131, 132 in order, on the one hand, to allow subsequent assembly and, on the other hand, a relatively strong magnetic coupling between see the end portion 131 E and the end portion of the second leg 132 reach.
  • one or both legs 131, 132 may have a rectangular cross-section or another cross-sectional shape, in particular a round cross-section.
  • Fig. 1B shows a frontal view taken along the longitudinal direction L of Fig. 1A.
  • the cross-sectional area 131 F is square with an edge length of 5 mm, in other embodiments an edge length of 3.5-7 mm is used.
  • the cross section 132F has the same dimension as the surface 131F in the lateral direction B, but is smaller in the lateral direction H, for example, the surface 132F along the direction H has a dimension of about 2 mm.
  • the magnetic cross-sectional area of the second leg 132 is reduced by a ratio of 1 / 2.5.
  • the magnetic cross-sectional area 131 F is at least twice the magnetic cross-sectional area 132F.
  • the cross sections 131 F and / or 132F may assume other geometric shapes, for example the shape of a rectangle, an oval, and in particular a circle.
  • the cross-sectional area 131 F and 132 F may each represent different geometric figures, such as a square in conjunction with a circle, etc. Regardless of the geometric shape of the respective cross-sections 131 F, 132 F, the two legs and a corresponding connecting part (not shown) cost and efficiently produced as a single piece of material.
  • Figure 1C shows a side view of the small transformer 100, wherein the overall dimension in the longitudinal direction L is 22 mm or smaller in order to obtain a compact structure, as already mentioned above.
  • Figure 1 D shows a corresponding sectional view along the section line B, which is shown in Figure 1 C.
  • the core material 130 is shown as two separate components, in which the one component is provided by the first leg 131, the second leg 132, and a connection part 137, while the second component is represented by the coupling part 135.
  • the component consisting of the legs 131, 132 and the connecting part 137 can be referred to as a single Matehai scholar be provided so that a very efficient production of this component can be achieved.
  • one or more of the elements 131, 132, 137 may be manufactured separately and then connected.
  • the core material 130 may be in the form of two separate components, i. the legs 131, 132 and the connecting part 137 as a component, on the one hand, and the coupling part 135, if provided, on the other hand, can be produced cost-efficiently.
  • these are preferably previously applied to the bobbin 140 and then positioned on the first leg 131.
  • FIG. 2 is a perspective view of a high output voltage, low voltage transformer 200 substantially identical to the embodiments described in conjunction with FIGS. 1A-1D, except that the optional one shown in FIGS Coupling part is not provided. That is, the small transformer 200 includes a first winding 210 with two turns and a second winding 220 on a bobbin 240 disposed on a first leg 231 of a non-closed core material 230. A second leg 232 is connected to the first leg 231 by a connecting part, not shown in Figure 2, so that substantially a U-shaped geometry of the core material 230 is formed.
  • FIGS. 1A-1D For further properties of the small transformer 200, reference should be made to the embodiments described in connection with FIGS. 1A-1D.
  • the small transformers 100, 200 according to the invention can advantageously be used in mobile applications, in vehicles in conjunction with gas discharge lamps, and the like.
  • a small volume of construction with given magnetic and electrical properties is an essential aspect for the usefulness of small high-voltage transformers.
  • a core geometry based on two legs for example in the form of a U-shaped structure, it has been possible to provide a required inductance value of the core material, for example in the range of 500-800 ⁇ , at the same time component dimensions for the length of approx. 22 mm or smaller and of dimensions of about 17 mm or smaller in the lateral directions.
  • the connection elements 113, 114 see FIG.
  • the values of the leakage inductance and the total inductance can be adjusted such that a pulse of suitable length is generated, in particular during the ignition process, and in the further course during startup of the discharge lamp desired limitation of the current is achieved.
  • the spatial extent of the stray magnetic field is very limited due to the small geometric dimensions of the small transformer, so that the positioning of the transformer within an electronic switching group is much easier and more flexible to handle compared to conventional systems, where appropriate, to further shielding measures for the magnetic Stray field can be dispensed with.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Coils Or Transformers For Communication (AREA)

Abstract

L'invention concerne un transformateur (100) comportant un premier enroulement (110) à deux spires (111, 112) et un deuxième enroulement (120) ainsi qu'un matériau de noyau à géométrie de noyau non fermée, présentant un premier montant (131) et un deuxième montant (132) disposés en U, de façon à former un ensemble très compact et à permettre une fabrication peu couteuse du matériau de noyau.
EP15739610.2A 2014-07-23 2015-07-22 Petit transformateur haute tension à noyau en u Withdrawn EP3172748A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014214433.7A DE102014214433A1 (de) 2014-07-23 2014-07-23 Hochspannungskleintransformator mit U-förmigem Kern
PCT/EP2015/066784 WO2016012510A1 (fr) 2014-07-23 2015-07-22 Petit transformateur haute tension à noyau en u

Publications (1)

Publication Number Publication Date
EP3172748A1 true EP3172748A1 (fr) 2017-05-31

Family

ID=53716495

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15739610.2A Withdrawn EP3172748A1 (fr) 2014-07-23 2015-07-22 Petit transformateur haute tension à noyau en u

Country Status (4)

Country Link
EP (1) EP3172748A1 (fr)
CN (1) CN106796836A (fr)
DE (1) DE102014214433A1 (fr)
WO (1) WO2016012510A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114334406B (zh) * 2021-08-19 2024-06-04 华为数字能源技术有限公司 磁集成结构和变换器

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013200265A1 (de) * 2013-01-10 2014-07-10 SUMIDA Components & Modules GmbH Kleintransformator für hohe Ausgangsspannungen

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1101065B (it) * 1978-11-13 1985-09-28 Magneti Marelli Spa Bobina d'accensione per autoveicoli
US4684912A (en) * 1986-07-09 1987-08-04 Marshall Electric Corporation Winding form for high voltage transformer
JPH03290907A (ja) * 1990-04-09 1991-12-20 Hanshin Electric Co Ltd 閉磁路型点火コイル
US5446435A (en) * 1991-09-20 1995-08-29 Liaisons Electroniques-Mecaniques Lem S.A. Current sensor comprising a magnetic circuit with an air gap
JP3687271B2 (ja) * 1997-05-27 2005-08-24 松下電工株式会社 高圧トランス
JP3387433B2 (ja) * 1998-12-18 2003-03-17 松下電器産業株式会社 インダクタンス部品
JP2002124416A (ja) * 2000-10-16 2002-04-26 Sumida Corporation チョークコイル
JP2003100525A (ja) * 2001-09-21 2003-04-04 Hitachi Media Electoronics Co Ltd トランス
JP2004111528A (ja) * 2002-09-17 2004-04-08 Matsushita Electric Ind Co Ltd マグネトロン駆動用昇圧トランス
DE102005029001A1 (de) * 2005-02-11 2006-08-24 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Lampensockel für eine Hochdruckentladungslampe und Hochdrucksentladungslampe
CN101116378A (zh) * 2005-02-11 2008-01-30 电灯专利信托有限公司 高压放电灯的灯座和高压放电灯
DE202005007484U1 (de) * 2005-05-11 2006-09-21 Vogt Electronic Components Gmbh Zündtransformator und Leuchtensockel für eine Entladungsleuchte
DE202011051721U1 (de) * 2011-10-21 2011-11-07 SUMIDA Components & Modules GmbH Hochspannungstransformator und bewickelter Spulenkörper für Zündmodule mit Anschlussstiften als Bestandteil der Primärwicklung

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013200265A1 (de) * 2013-01-10 2014-07-10 SUMIDA Components & Modules GmbH Kleintransformator für hohe Ausgangsspannungen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2016012510A1 *

Also Published As

Publication number Publication date
WO2016012510A1 (fr) 2016-01-28
DE102014214433A1 (de) 2016-01-28
CN106796836A (zh) 2017-05-31

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