EP3026683B1 - Transformateur, dispositif d'alimentation, et procédé de fabrication de transformateur - Google Patents

Transformateur, dispositif d'alimentation, et procédé de fabrication de transformateur Download PDF

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Publication number
EP3026683B1
EP3026683B1 EP15740882.4A EP15740882A EP3026683B1 EP 3026683 B1 EP3026683 B1 EP 3026683B1 EP 15740882 A EP15740882 A EP 15740882A EP 3026683 B1 EP3026683 B1 EP 3026683B1
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EP
European Patent Office
Prior art keywords
lead wire
wound
bobbin
transformer
cylindrical portion
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.)
Active
Application number
EP15740882.4A
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German (de)
English (en)
Other versions
EP3026683A4 (fr
EP3026683A1 (fr
Inventor
Hirohiko Miki
Akira Itoh
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.)
Proterial Ltd
Original Assignee
Hitachi Metals Ltd
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Publication date
Application filed by Hitachi Metals Ltd filed Critical Hitachi Metals Ltd
Priority to PL15740882T priority Critical patent/PL3026683T3/pl
Publication of EP3026683A1 publication Critical patent/EP3026683A1/fr
Publication of EP3026683A4 publication Critical patent/EP3026683A4/fr
Application granted granted Critical
Publication of EP3026683B1 publication Critical patent/EP3026683B1/fr
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Classifications

    • 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
    • H01F41/06—Coil winding
    • H01F41/08—Winding conductors onto closed formers or cores, e.g. threading conductors through toroidal cores
    • 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
    • H01F27/25—Magnetic cores made from strips or ribbons
    • 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
    • H01F27/2823—Wires
    • H01F27/2828—Construction of conductive connections, of leads
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F30/00—Fixed transformers not covered by group H01F19/00
    • H01F30/06—Fixed transformers not covered by group H01F19/00 characterised by the structure
    • H01F30/10—Single-phase transformers

Definitions

  • the present invention relates to a transformer for use in a switched mode power supply, an insulated inverter, or the like, a manufacturing method thereof, and a power supply device.
  • magnetic cores molded in a "UU” or “EE” shape are joined together in a coil form formed by winding a lead wire around a bobbin beforehand, so as to form a magnetic path in a " " shape of a Japanese Kana character, racetrack shape, or " " shape of a Japanese Kanji Character.
  • Patent Document 1 discloses, for example, the technique of efficiently winding a wire around an uncut magnetic core, although this technique relates not to the transformer but to the line filter.
  • a bobbin with a gear is attached to a " "-shaped, closed magnetic path magnetic core, and the gear is utilized for the wire winding operation. This makes the wire winding operation easier.
  • JP S55-122329 discloses a transformer with a seamless magnetic core configured by winding or laminating a magnetic metal plate.
  • JP 2008-072070 discloses a coil winding method for winding a siliconized electromagnetic steel wire, said wire being used as a core material for a power transformer.
  • JP 2003-133146 discloses transformer-bobbins preventing contact between the lead of a winding wire located internally and a winding wire located externally.
  • JP S60-187522 discloses a coil winding support member which covers and thereby protects a circular magnetic core.
  • JP H02-178905 discloses the option to arrange a first and a second coil in a radial direction of a cylindrical portion of a bobbing is.
  • the at least one bobbin includes a plurality of bobbins, and the primary coil and the secondary coil are each divided into a plurality of sub-coils which are connected in parallel or in series, and the plurality of sub-coils are provided to the plurality of bobbins.
  • the at least one bobbin has an outer circumferential surface between the flange and the gear portion, and a diameter of the outer circumferential surface is equal to a diameter of a circumferential surface of the cylindrical portion.
  • the at least one bobbin includes a plurality of bobbins, and the primary coil and the secondary coil are each divided into a plurality of sub-coils which are connected in parallel or in series, and the plurality of sub-coils are provided to the plurality of bobbins.
  • the magnetic alloy ribbon is preferably such that, as described above, the saturation magnetic flux density Bs is not less than 1.0 T, and the ratio of the residual magnetic flux density Br to the saturation magnetic flux density Bs, Br/Bs, is not more than 0.3.
  • the upper limit of Bs is not particularly limited, Bs of a Fe amorphous material which has been put into practical use is, for example, not more than 1.8 T.
  • the inner circumferential surface of the cylindrical portion 7 of the bobbin 4 and the corners of the case 1 are arranged so as to be in moderate contact with each other, or so as to have slight clearance therebetween.
  • the bobbin 4 is rotatably supported on the linear portions 6 of the case 1 at the cylindrical portion 7.
  • the gear portions 9 are coaxial with the cylindrical portion 7, and the cylindrical portion 7 rotates integrally with the gear portions 9. Therefore, winding of the wire is realized by transmitting the driving force of a motor, or the like, to the gear portions 9, and the manipulation convenience in the wire winding operation is secured.
  • the gear portion is provided at opposite ends of the cylindrical portion 7, the gear portion can be provided at only one end. Note that, however, from the viewpoint of stable rotation of the bobbin 4, the gear portion is preferably provided at each of the opposite ends of the cylindrical portion.
  • the lead wire is wound around the cylindrical portion 7 from one end to the other end of the cylindrical portion 7 (x direction).
  • the lead wire can be wound in a radially-layered arrangement, it is preferred from the purpose of improving the above-described coupling between the coils that each wound portion has a single layer arrangement, without layering of the lead wire.
  • sub-coil 21a and sub-coil 22a are wound around one of the bobbins (bobbin 23 ), and the other sub-coil (sub-coil 21b and sub-coil 22b ) is wound around the other bobbin (bobbin 24 ).
  • the bobbins 23, 24 are respectively provided at opposing two side portions of the magnetic core 25 that has a rectangular annular shape (" " shape).
  • an insulated transformer of 1:1 was manufactured with the specifications of the switching frequency at 20 kHz and the input of 230 Vrms 9.5 Arms.
  • the volumes of the transformer of the example and the transformer of the comparative example were both 183 ⁇ 10 -6 m 3 .
  • Bm was designed as high as possible in a range which does not cause problems in the operation, such as magnetic saturation, burnout, etc.
  • the results of comparison between the example and the comparative example are shown in Table 1.
  • the "transformer volume" in Table 1 refers to a volume calculated with the product of the maximum dimensions in three directions which are orthogonal to one another (x, y, z directions). Further, the manufactured transformers were mounted to an inverter, and comparison of driving was performed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
  • Dc-Dc Converters (AREA)
  • Insulating Of Coils (AREA)

Claims (15)

  1. Transformateur (100) comprenant:
    un noyau magnétique brut (5, 15, 20, 25, 33) formé par l'enroulement ou la superposition d'un ruban en alliage magnétique, le noyau magnétique brut (5, 15, 20, 25, 33) formant un chemin magnétique fermé ;
    un élément protecteur couvrant au moins une partie du noyau magnétique (5, 15, 20, 25,33) ;
    un serpentin primaire (2, 12, 16, 21, 31) et un serpentin secondaire (3, 13, 17, 22, 32) ; et
    au moins une bobine (4, 14, 18, 19, 23, 24, 30) autour de laquelle un fil conducteur qui forme le serpentin primaire (2, 12, 16, 21,31) et le serpentin secondaire (3, 13, 17, 22, 32) est destiné à être enroulé,
    dans lequel au moins l'une des bobines (4, 14, 18, 19, 23, 24, 30) comporte une section cylindrique (7) qui possède une surface circonférentielle autour de laquelle le fil conducteur est destiné à être enroulé, une paire de brides (8) disposées afin de prendre en sandwich la surface circonférentielle est située dans une direction axiale de la section cylindrique (7) et au moins une section à engrenage (9) livrée sur un côté extérieur d'au moins l'une de la paire de brides (8) afin d'être espacée à l'écart de la bride (8),au moins l'une des bobines (4, 14, 18, 19, 23, 24, 30) étant fixée afin d'être rotative autour de l'élément protecteur sur la section cylindrique (7),
    au moins l'une de la paire de brides (8) possède une section de passage de fil conducteur qui est livrée sur un côté extérieur des brides (8) et une section terminale du fil conducteur est enroulée autour de la surface circonférentielle de la section cylindrique (7),
    la section de passage de fil conducteur comporte une paire de renfoncements (10) qui sont disposés de manière à prendre en sandwich la section cylindrique (7) telle que vue dans une direction axiale de la section cylindrique (7) et qui permet le passage du fil conducteur à une position radialement plus interne qu'une bordure circonférentielle extérieure des brides (8),
    une section enroulée du fil conducteur qui forme le serpentin primaire (2, 12, 16, 21, 31) et une section enroulée du fil conducteur qui forme le serpentin secondaire (3, 13, 17, 22, 32) sont disposées alternativement dans une direction radiale de la section cylindrique (7),
    des sections de fil conducteur de celles respectives d'une pluralité de sections enroulées du fil conducteur qui forme le serpentin primaire (2, 12, 16, 21, 31) qui se chevauchent via une section enroulée du fil conducteur qui forme le serpentin secondaire (3, 13, 17, 22, 32) sont branchées en dérivation sur un côté extérieur des brides (8), et des sections de fil conducteur de celles respectives d'une pluralité de sections enroulées du fil conducteur qui forme le serpentin secondaire (3, 13, 17, 22, 32) qui se chevauchent via une section enroulée du fil conducteur qui forme le serpentin primaire (2, 12, 16, 21, 31) sont branchées en dérivation sur un côté extérieur des brides (8), et
    et une section terminale du fil conducteur qui forme le serpentin primaire (2, 12, 16, 21, 31) est livrée sur un côté extérieur des brides (8) via l'un de la paire de renfoncements (10), et une section terminale du fil conducteur qui forme le serpentin secondaire (3, 13, 17, 22, 32) est livrée sur un côté extérieur des brides (8) via l'autre de la paire de renfoncements (10).
  2. Transformateur (100) selon la revendication 1, dans lequel au moins l'une des bobines (4,14,18,19,23,24,30) comporte une pluralité d'éléments de bobine qui sont assemblés autour de l'élément protecteur afin de prendre en sandwich l'élément protecteur, et chacun de la pluralité d'éléments de bobine comporte une partie de la section cylindrique (7).
  3. Transformateur (100) selon les revendications 1 ou 2, dans lequel
    au moins l'une des bobines (18, 19, 23, 24) comporte une pluralité de bobines, et
    le serpentin primaire (16, 21) et le serpentin secondaire (17, 22) sont divisés chacun en une pluralité de sous-serpentins qui sont branchés en dérivation ou en série, et la pluralité de sous-serpentins est livrée à la pluralité de bobines.
  4. Transformateur (100) selon une quelconque des revendications 1 à 3, dans lequel le ruban en alliage magnétique possède des caractéristiques magnétiques de sorte qu'une densité de flux magnétique de saturation Bs n'est pas inférieure à 1,0 T, et un rapport d'une densité de flux magnétique résiduelle Br à la densité de flux magnétique de saturation Bs, Br/Bs, n'est pas supérieur à 0,3.
  5. Transformateur (100) selon une quelconque des revendications 1 à 4, dans lequel un isolant de la forme d'une feuille est livré entre une section enroulée du serpentin primaire (2, 12, 16, 21, 31) et une section enroulée du serpentin secondaire (3, 13, 17, 22, 32).
  6. Transformateur selon les revendications 4 ou 5, dans laquelle au moins l'une des bobines (4, 14, 18, 19, 23, 24, 30) comporte par ailleurs une section de restriction qui possède une surface en vue d'empêcher une section terminale du fil conducteur livrée sur un côté extérieur des brides (8) via la section de passage de fil conducteur de se déplacer radialement en dehors de la section cylindrique (7) lorsque la bobine (4, 14, 18, 19, 23, 24, 30) est en rotation.
  7. Transformateur (100) selon une quelconque des revendications 1 à 6, comprenant par ailleurs une protubérance en forme de poteau (11) faisant saillie radialement en dehors de la section cylindrique (7) à partir d'une surface des brides (8).
  8. Transformateur (100) selon une quelconque des revendications 1 à 7, dans lequel l'élément protecteur est un boîtier (1) destiné à abriter le noyau magnétique (5, 15, 20, 25, 33).
  9. Transformateur (100) selon une quelconque des revendications 1 à 8, dans lequel au moins l'une des bobines (4, 14, 18, 19, 23, 24, 30) possède une surface circonférentielle externe entre la bride (8) et la section à engrenage (9), et un diamètre de la surface circonférentielle externe est égal à un diamètre de la surface circonférentielle de la section cylindrique (7).
  10. Dispositif d'alimentation électrique, comprenant le transformateur (100) selon une quelconque des revendications 1 à 12.
  11. Méthode de fabrication d'un transformateur (100), comprenant :
    la première étape de fixation d'un élément protecteur à un noyau magnétique brut (5, 15, 20, 25, 33), le noyau magnétique brut (5, 15, 20, 25, 33) étant formé par l'enroulement ou la superposition d'un ruban en alliage magnétique, le noyau magnétique brut (5, 15, 20, 25, 33) formant un chemin magnétique fermé ;
    la seconde étape de fixation d'au moins une bobine (4, 14, 18, 19, 23, 24, 30), au moins l'une des bobines (4, 14, 18, 19, 23, 24, 30) comportant une section cylindrique (7) qui possède une surface circonférentielle autour de laquelle un fil conducteur est destiné à être enroulé, une paire de brides (8) disposées afin de prendre en sandwich la surface circonférentielle dans une direction axiale de la section cylindrique (7) et au moins une section à engrenage (9) qui est livrée sur un côté extérieur d'au moins l'une de la paire de brides (8) afin d'être espacée à l'écart de la bride (8), au moins l'une des bobines (4, 14, 18, 19, 23, 24, 30) étant fixée afin d'être rotative autour de l'élément protecteur sur la section cylindrique (7) ; et
    la troisième étape d'enroulement du fil conducteur autour de la surface circonférentielle de la section cylindrique (7) en faisant tourner au moins l'une des bobines (4, 14, 18, 19, 23, 24, 30) via la section à engrenage (9), en formant alors un serpentin primaire (2, 12, 16, 21, 31) et un serpentin secondaire (3, 13, 17, 22, 32) autour de la section cylindrique (7),
    dans laquelle dans au moins l'une des bobines (4, 14, 18, 19, 23, 24, 30) étant fixée afin d'être rotative autour de l'élément protecteur sur la section cylindrique, au moins une des paires de brides (8) possède une paire de renfoncements (10) qui sont disposés de manière à prendre en sandwich la section cylindrique (7) telle que vue dans une direction axiale de la section cylindrique (7),
    la troisième étape comporte l'étape de formation d'une section enroulée du fil conducteur qui forme le serpentin primaire (2, 12, 16, 21, 31) et d'une section enroulée du fil conducteur qui forme le serpentin secondaire (3, 13, 17, 22, 32) sont disposées alternativement dans une direction radiale de la section cylindrique (7), et d'une section terminale du fil conducteur qui forme le serpentin primaire (2, 12, 16, 21, 31) étant livrée sur un côté extérieur des brides (8) via l'un de la paire de renfoncements (10), et une section terminale du fil conducteur qui forme le serpentin secondaire (3, 13, 17, 22, 32) étant livrée sur un côté extérieur des brides (8) via l'autre de la paire de renfoncements (10), et
    la méthode comprend par ailleurs, après la troisième étape, la quatrième étape de branchement de sections de fil conducteur de celles respectives d'une pluralité de sections enroulées du fil conducteur qui forme le serpentin primaire (2, 12, 16, 21, 31) qui se chevauchent via une section enroulée du fil conducteur qui forme le serpentin secondaire (3, 13, 17, 22, 32) en dérivation sur un côté extérieur des brides (8), et le branchement de sections de fil conducteur de celles respectives d'une pluralité de sections enroulées du fil conducteur qui forme le serpentin secondaire (3, 13, 17, 22, 32) qui se chevauchent via une section enroulée du fil conducteur qui forme le serpentin primaire (2, 12, 16, 21, 31) en dérivation sur un côté extérieur des brides (8).
  12. Méthode selon la revendication 11, dans laquelle
    au moins l'une des bobines (18, 19, 23, 24) comporte une pluralité de bobines, et
    le serpentin primaire (16,21) et le serpentin secondaire (17, 22) sont divisés chacun en une pluralité de sous-serpentins qui sont branchés en dérivation ou en série, et la pluralité de sous-serpentins est livrée à la pluralité de bobines.
  13. Méthode selon les revendications 1 ou 12, dans laquelle à la troisième étape, à la formation d'une section enroulée du fil conducteur, une section terminale du fil conducteur est livrée dans un espace entre la bride (8) et la section à engrenage (9).
  14. Méthode selon la revendication 13, dans laquelle
    au moins l'une des bobines comporte par ailleurs une section de restriction qui possède une surface en vue d'empêcher une section terminale du fil conducteur livrée sur un côté extérieur des brides (8) de se déplacer radialement en dehors de la section cylindrique (7), et
    à la troisième étape, à la formation d'une section enroulée du fil conducteur, une section terminale du fil conducteur est livrée dans une position plus interne que la section de restriction dans une direction radiale de la section cylindrique (7).
  15. Méthode selon une quelconque des revendications 11 à 14, dans laquelle
    au moins l'une des bobines possède une protubérance en forme de poteau (11) faisant saillie radialement en dehors de la section cylindrique (7) à partir d'une surface des brides (8), et
    la troisième étape comporte l'étape de liage d'une section terminale du fil conducteur autour de la protubérance.
EP15740882.4A 2014-01-27 2015-01-26 Transformateur, dispositif d'alimentation, et procédé de fabrication de transformateur Active EP3026683B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL15740882T PL3026683T3 (pl) 2014-01-27 2015-01-26 Transformator, urządzenie zasilające i sposób wytwarzania transformatora

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2014011956 2014-01-27
PCT/JP2015/052035 WO2015111743A1 (fr) 2014-01-27 2015-01-26 Transformateur, dispositif d'alimentation, et procédé de fabrication de transformateur

Publications (3)

Publication Number Publication Date
EP3026683A1 EP3026683A1 (fr) 2016-06-01
EP3026683A4 EP3026683A4 (fr) 2017-04-19
EP3026683B1 true EP3026683B1 (fr) 2019-10-23

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EP (1) EP3026683B1 (fr)
JP (1) JP5861805B2 (fr)
DK (1) DK3026683T3 (fr)
PL (1) PL3026683T3 (fr)
WO (1) WO2015111743A1 (fr)

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JP2017079501A (ja) * 2015-10-19 2017-04-27 アイリスオーヤマ株式会社 Ｌｅｄ照明装置
CN107346699A (zh) * 2016-05-06 2017-11-14 深圳市京泉华科技股份有限公司 骨架、电感器及应所述电感器的电子装置
KR101908448B1 (ko) * 2017-07-17 2018-10-17 수정전자산업(주) 트랜스포머의 적층 권선을 제조하는 방법
JP7004455B2 (ja) * 2018-03-28 2022-01-21 ニチコン株式会社 トランスの巻線構造
CN108630428B (zh) * 2018-06-26 2023-11-21 河南森源电气股份有限公司 一种绕线模
JP7420092B2 (ja) * 2021-01-28 2024-01-23 株式会社プロテリアル 絶縁トランス
DE102022209761A1 (de) * 2022-09-16 2024-03-21 Siemens Energy Global GmbH & Co. KG Spulenanordnung für einen Leistungsspannungswandler
KR102659159B1 (ko) * 2024-03-18 2024-04-19 주식회사 케이피일렉트릭 다층 병렬 권선 변압기

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JPH0751780Y2 (ja) 1990-11-29 1995-11-22 株式会社トーキン 歯車付きコイル
JPH0541124U (ja) * 1991-10-31 1993-06-01 株式会社トーキン インダクタンス部品用円筒巻枠
JPH06283363A (ja) * 1993-03-29 1994-10-07 Nippon Steel Corp インダクター
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JP2003133146A (ja) * 2001-10-29 2003-05-09 Cosel Co Ltd トランスボビン
JP2008072070A (ja) * 2006-09-11 2008-03-27 Masashi Otsubo 小形電源トランス

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Also Published As

Publication number Publication date
DK3026683T3 (da) 2020-01-27
EP3026683A4 (fr) 2017-04-19
PL3026683T3 (pl) 2020-05-18
JPWO2015111743A1 (ja) 2017-03-23
EP3026683A1 (fr) 2016-06-01
JP5861805B2 (ja) 2016-02-16
WO2015111743A1 (fr) 2015-07-30

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