WO2015026021A1 - Procédé de formation supplémentaire de bornes électriques sur deux surfaces latérales d'une inductance de puissance composite - Google Patents

Procédé de formation supplémentaire de bornes électriques sur deux surfaces latérales d'une inductance de puissance composite Download PDF

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Publication number
WO2015026021A1
WO2015026021A1 PCT/KR2014/000308 KR2014000308W WO2015026021A1 WO 2015026021 A1 WO2015026021 A1 WO 2015026021A1 KR 2014000308 W KR2014000308 W KR 2014000308W WO 2015026021 A1 WO2015026021 A1 WO 2015026021A1
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WO
WIPO (PCT)
Prior art keywords
inductor
terminals
molding
molding machine
coil winding
Prior art date
Application number
PCT/KR2014/000308
Other languages
English (en)
Korean (ko)
Inventor
오세종
오승석
김정래
Original Assignee
Oh Se Jong
Oh Seung Suk
Kim Jung Rai
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 Oh Se Jong, Oh Seung Suk, Kim Jung Rai filed Critical Oh Se Jong
Publication of WO2015026021A1 publication Critical patent/WO2015026021A1/fr

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    • 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
    • H01F27/29—Terminals; Tapping arrangements for signal inductances
    • 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
    • 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
    • H01F41/10—Connecting leads to windings

Definitions

  • the invention also applies to both the left and right sides of a conventional composite power inductor (hereinafter simply referred to as "inductor"), for example, in which two electrical terminals are formed only on one side (eg, bottom).
  • a method for further forming an electrical terminal in the form of a metal thin film is also applicable.
  • an object or object of the present invention to solve the problem is, in addition to the bottom terminal provided on the bottom surface of the inductor, the side electrical terminals, such as metal thin film side terminals that can maintain the welding force with the solder on both the left and right sides of the inductor, the bottom surface
  • the side electrical terminals such as metal thin film side terminals that can maintain the welding force with the solder on both the left and right sides of the inductor
  • a masking shield for terminal isolation is attached to the surface on which the two bottom terminals of the molded body are to be formed, followed by three longitudinally extending masking shields.
  • the left and right lead wires of the hollow core coil of the buried inductor are exposed to the outside at the right and left ends of the bottom surface of the inductor or from both sides of the inductor to both sides of the composite power inductor. How to form additional terminals.
  • the external electrode i.e., the electrical terminal
  • the metal thin film i.e., the side terminal
  • the metal thin film i.e., the side terminal
  • it can be formed integrally with each corresponding bottom terminal. Accordingly, it is possible to conveniently produce an inductor product having a uniform appearance and size [size]. Furthermore, since the strength of the terminal and the solder welding force are improved, it is possible to firmly weld the inductor to the circuit board. As a result, since the robustness and impact resistance of the electrical and electronic products are greatly increased, the failure rate of the electrical and electronic devices can be greatly reduced.
  • FIG. 2 is an exemplary view showing a state in which the inductor of FIG. 1 is welded in an electronic circuit with solder.
  • 3 (a) to 3 (bar) are schematic diagrams illustrating the method of the present invention.
  • 4 (a) to 4 (e) are schematic diagrams illustrating the principle of integrally forming electrical terminals simultaneously on both ends of the bottom of the inductor and on both sides of the inductor according to the sputtering technique.
  • FIG 5 is an exemplary view showing a state in which the inductor product of the present invention is welded in an electronic circuit with solder.
  • FIG. 1A schematically shows a molded body in which a plurality of inductors CI formed by applying the molding methods described in the above-described Korean Patent Nos. 10-1044607 and 10-1044608 are embedded.
  • 1b shows a pair of left and right electrical terminal forming portions formed on one surface of the inductor CI.
  • Patent No. 10-1044608 an external electrode, that is, an external electrical terminal is formed by depositing a metal piece on a lead wire protruding portion of an air core coil
  • Patent Application No. 10-19188 describes an inductor (CI) by a so-called sputtering technique.
  • the electrical terminal is simply formed by depositing a metal thin film on a predetermined surface of the substrate.
  • the sputtering technique is a metal thin film deposition technique already known for a long time. The technical outline thereof is well known in the art, as described in detail in the patent application No. 10-19188, according to the drawings, and thus the description thereof is omitted here.
  • other conventional metal deposition methods may be used, but an electric terminal forming method using a sputtering method will be described.
  • the inductors (CI) molded plurality buried [in the drawing is embedded a CI of 169 (13 ⁇ 13). However, those sizes have also is variable according to the design value.]
  • the shaded portion in the figure serves as the electrical terminals 1a and 1b, which, as described above, are externally made of a separate metallic sheet at a predetermined position on one side (i.e., bottom) of the inductor CI.
  • the terminal can be formed by welding or sputtering deposition.
  • the portion indicated by the reference numeral EI is a portion formed between the terminal 1a and the terminal 1b, and is a region for securing electrical insulation between these two terminals.
  • the shaded portions (i.e., portions 1a and 1b) in Fig. 1 are formed on the required one side of the inductor CI by a known sputtering technique (for example, gold (Au), silver (Ag), tin (Sn), copper ( Cu), nickel (Ni), etc.] is a terminal on which a thin film is deposited (deposited).
  • a known sputtering technique for example, gold (Au), silver (Ag), tin (Sn), copper ( Cu), nickel (Ni), etc.
  • the present inventors have come to the idea that the welding force with the circuit can be increased if soldering can be performed not only on the two terminal portions on both ends of the bottom surface of the inductor CI, but also on both side portions. It is complete.
  • an automatic electric wire (wire) winding machine (not shown) around the plurality of winding pins 31 formed on the coil winding plate 30.
  • the wires supplied by the automatic winding are automatically wound with a predetermined winding amount to form an air core coil 33.
  • the diameter of the wire used is 0.05 ⁇ 0.15 mm, the choice depends on the size of the final inductor and there is no particular limitation.
  • the diameter and height of the winding pin 31 also depend on the size of the final inductor, and the ratio of diameter to height is conveniently about 3: 5. Therefore, in the present invention, the winding pin 31 has a diameter of 0.3 mm and a height of 0.5 mm.
  • the winding plate 30 in the state where the air core coil 33 is wound is transferred to the inductor molding machine 34 'as it is, and a predetermined amount of magnetic metal powder 35 is introduced from the upper portion thereof, and then the molding press P
  • the inductor upper molded body 36 is obtained by pressing under predetermined conditions to perform a molding operation.
  • the pressing force varies depending on the specifications of the desired inductor, but may be in the range of 3 to 7 tons / cm 2.
  • the winding plate 30 is removed from the resultant molded inductor upper body 36 and removed.
  • the upper molded body 36 is placed upside down on the lower molding machine 34 ", the same magnetic metal powder 35 is introduced from the upper part thereof, and the coil 33 is operated by operating the molding presser P under the designed conditions.
  • the magnetic metal powder 35 is inserted into the hollow core of the core so as to be press-molded.
  • the final inductor molded body 37 is taken out of the molding machine 34 "and recovered.
  • the symbol Bs means the bottom face of the molded body 37, where the lead wire 38 of the air core coil 33 is exposed. As will be described later, the lead wire 38 may be exposed to the outside through the left and right sides of each inductor.
  • Fig. 4 (a) shows a plurality of hollow cores (33) connected to each other embedded therein as a result of the processes shown in Figs.
  • the internal structure of the molded body 37 including four (16) inductors is shown schematically.
  • a masking shield 39 made of a synthetic resin sheet or the like is adhered on the exposed surface of the lead wire 38 in an appropriate manner.
  • an elongate slit 40 is formed between each longitudinal arrangement of the air core coils 33 (Fig. 4 (C)).
  • a schematic diagram of the formation and structure of this slit 40 is shown in Fig. 4 (D).
  • the deposited metal is selected from among suitable electrical conductor metals such as gold (Au), silver (Ag), copper (Cu), aluminum (Al), tin (Sn), nickel (Ni), etc., according to the design specification of the inductor (CI). Can be selected.
  • gold Au
  • silver Ag
  • Cu copper
  • Al aluminum
  • tin Sn
  • Ni nickel
  • CI inductor
  • FIG. 4 (d) is a cross-sectional view taken along line QQ of FIG. 4 (c), in which a terminal metal isolation zone is formed by a masking shield 39 formed on the bottom surface of an inductor CI by, for example, a silver (Ag) metal thin film.
  • a terminal metal isolation zone is formed by a masking shield 39 formed on the bottom surface of an inductor CI by, for example, a silver (Ag) metal thin film.
  • the surface of the slit via each slit 40 that is, the left and right sides of the five parts of each inductor CI, can function as a terminal.
  • the state in which the thin metal [Ag] thin film, that is, the left and right side terminals Ta " and Tb ", is integrally connected to the corresponding bottom terminals Ta 'and Tb', respectively, is shown.
  • a pair of external terminals Ta'-Ta and Tb'-Tb "each having an" L "shape in cross section are formed integrally.
  • the left and right lead wires La and Lb of the air core coil 33 are respectively shown to be externally drawn from the bottom of the inductor CI, but are side terminals to be formed on both sides of the inductor CI. It may be exposed to the outside in place on both sides of the inductor CI so as to be in electrical connection with (Ta " and Tb" ) (not shown).
  • the thin film thicknesses of the terminals Ta'-Tb 'and Ta "-Tb" formed integrally are several thousand micrometers to several micrometers depending on sputtering conditions, such as sputtering voltage, time, etc., and various other desired requirements. It can be adjusted to the range of, which can be easily performed by those skilled in the art. In the case of the present invention illustrated above, the thin film thickness of the terminals was measured to be on average about 2 ⁇ m.
  • the welding force allows the welding force to be more firm than the welding force relying only on the two bottom terminal welding portions S 1 and S 2 of the existing inductor product shown in FIG. 2.
  • the angular distances Ds and Dw from the upper end of the air core coil 33 to the upper surface Us and the side surface Ss of the molded body 37 are about 0.05 to 2 mm depending on the design specification of the product. The range can be varied, but the present invention is not particularly limited thereto.

Abstract

L'invention concerne un moyen qui, en plus de deux bornes électriques formées à des extrémités opposées de la surface inférieure d'une inductance de puissance composite existante, forme, au moyen d'une technique de pulvérisation, des bornes électriques sur les surfaces latérales gauche et droite correspondantes de l'inductance qui sont connectées aux bornes formées sur la surface inférieure, ce qui permet de renforcer sensiblement la résistance mécanique d'une brasure entre l'inductance et un circuit. Spécifiquement, un procédé pour former des bornes supplémentaires sur deux surfaces latérales d'une inductance est décrit. Le procédé comprend : une première étape consistant à obtenir une pluralité de bobines à noyau d'air (33) connectées l'une à l'autre, par enroulement continu d'un fil électrique autour de chaque broche d'enroulement de bobine d'une pluralité de broches d'enroulement de bobine (31) dans une plaque d'enroulement de bobines (30) ; une deuxième étape consistant à obtenir un corps façonné primaire (36) comprenant une pluralité d'inductances individuelles (CI) en son sein, par placement de la plaque d'enroulement de bobines (30), dans l'état dans lequel les bobines à noyau d'air (33) ont été enroulées à la première étape, dans une machine de moulage (34') servant à mouler la partie supérieure d'une inductance, injection d'une poudre magnétique métallique (35) dans la machine de moulage (34') et ensuite soumission de la poudre à un moulage par compression ; une troisième étape consistant à obtenir un corps façonné secondaire (37) dans lequel la pluralité d'inductances individuelles (CI) sont noyées, par déplacement du corps façonné primaire (36), duquel la plaque d'enroulement de bobines (30) a été retirée, de la machine de moulage de la deuxième étape à une machine de moulage (34") servant à mouler la partie inférieure d'une inductance, ajout de la poudre magnétique métallique (35) au corps façonné primaire (36) puis soumission de la poudre à un moulage par compression ; et une quatrième étape consistant à former simultanément et d'une seule pièce des bornes inférieures (Ta', Tb') et des bornes latérales (Ta", Tb"), par liaison d'écrans de masquage (39) pour séparation des bornes à la surface du corps façonné secondaire (37) sur laquelle deux bornes inférieures doivent être formées, dépôt d'un film métallique au moyen d'une technique de pulvérisation sur des fentes allongées (40) formées entre les écrans de masquage dans la direction longitudinale, et ensuite séparation et enlèvement des écrans de masquage (39).
PCT/KR2014/000308 2013-08-19 2014-01-10 Procédé de formation supplémentaire de bornes électriques sur deux surfaces latérales d'une inductance de puissance composite WO2015026021A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2013-0098093 2013-08-19
KR1020130098093A KR101430427B1 (ko) 2013-08-19 2013-08-19 콤포짓 파워 인덕터의 양측면에 전기 단자를 추가 형성하는 방법

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KR (1) KR101430427B1 (fr)
TW (1) TW201508788A (fr)
WO (1) WO2015026021A1 (fr)

Cited By (3)

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WO2015162016A1 (fr) * 2014-04-23 2015-10-29 Würth Elektronik eiSos Gmbh & Co. KG Procédé de production d'un élément à induction et élément à induction
CN109360731A (zh) * 2018-12-03 2019-02-19 东莞市高东电子科技有限公司 一种一体成型电感制作方法及利用该方法制作的电感
CN114843098A (zh) * 2022-05-27 2022-08-02 张灵波 一种表面安装电感器的制造方法

Families Citing this family (3)

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US10049808B2 (en) * 2014-10-31 2018-08-14 Samsung Electro-Mechanics Co., Ltd. Coil component assembly for mass production of coil components and coil components made from coil component assembly
KR102178709B1 (ko) * 2019-10-14 2020-11-13 주식회사 에스에스티 메탈 파워 인덕터의 제조 방법
KR20220069684A (ko) 2020-11-20 2022-05-27 주식회사 에스에스티 저인덕턴스 메탈 콤포짓 파워 인덕터

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JP2009290076A (ja) * 2008-05-30 2009-12-10 Shindengen Electric Mfg Co Ltd 表面実装型インダクタの製造方法
KR20100129025A (ko) * 2009-05-29 2010-12-08 오세종 콤포짓 인덕터의 새로운 성형 방법
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015162016A1 (fr) * 2014-04-23 2015-10-29 Würth Elektronik eiSos Gmbh & Co. KG Procédé de production d'un élément à induction et élément à induction
JP2017514308A (ja) * 2014-04-23 2017-06-01 ビュルト エレクトロニク アイソス ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニー コマンディトゲゼルシャフト インダクタ部品を形成する方法
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CN109360731A (zh) * 2018-12-03 2019-02-19 东莞市高东电子科技有限公司 一种一体成型电感制作方法及利用该方法制作的电感
CN114843098A (zh) * 2022-05-27 2022-08-02 张灵波 一种表面安装电感器的制造方法

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