WO2019200897A1 - Bobine d'inductance à enroulement vertical à fil plat et inducteur à enroulement vertical - Google Patents

Bobine d'inductance à enroulement vertical à fil plat et inducteur à enroulement vertical Download PDF

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Publication number
WO2019200897A1
WO2019200897A1 PCT/CN2018/114573 CN2018114573W WO2019200897A1 WO 2019200897 A1 WO2019200897 A1 WO 2019200897A1 CN 2018114573 W CN2018114573 W CN 2018114573W WO 2019200897 A1 WO2019200897 A1 WO 2019200897A1
Authority
WO
WIPO (PCT)
Prior art keywords
flat wire
flat
wire
winding
vertical winding
Prior art date
Application number
PCT/CN2018/114573
Other languages
English (en)
Chinese (zh)
Inventor
邵革良
管春杨
Original Assignee
深圳市伊戈尔沐磁科技有限公司
伊戈尔电气股份有限公司
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 深圳市伊戈尔沐磁科技有限公司, 伊戈尔电气股份有限公司 filed Critical 深圳市伊戈尔沐磁科技有限公司
Publication of WO2019200897A1 publication Critical patent/WO2019200897A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F17/00—Fixed inductances of the signal type 
    • H01F17/04—Fixed inductances of the signal type  with magnetic core
    • H01F17/045—Fixed inductances of the signal type  with magnetic core with core of cylindric geometry and coil wound along its longitudinal axis, i.e. rod or drum core
    • 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
    • H01F27/2871—Pancake coils
    • 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
    • H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
    • H01F27/306—Fastening or mounting coils or windings on core, casing or other support
    • 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

Definitions

  • the present invention relates to the field of electrical components, and more particularly to a flat wire wound inductor and a vertical wound inductor.
  • FIG. 1 Power inductors with flat wire windings have been widely used in various high frequency and high power switching power supplies such as photovoltaic inverters, UPS, and DC charging makeup modules in recent years.
  • the vertical winding of the flat wire is a rectangular wire whose cross-sectional shape is much larger than the thickness of the wire. As shown in Fig. 1, the normal direction of the width of the wire is bent along the side of the thickness of the wire. Winding, the purpose of achieving more turns in the overall length of a particular coil.
  • FIG. 2 The upper part of FIG. 2 is a common square vertical winding inductor coil, which is formed by a plurality of ⁇ spring-type flat wires, the total length L of the coil, the thickness of the flat wire is t, and the width of the flat wire is w. Where the width w is several to several tens of times the thickness t of the flat line.
  • the flat wire Since the flat wire is bent laterally, the inner side wall of the flat wire will be subjected to a large bending stress, and the thickness t of the flat wire is thin, and the bending stress per unit area is very large, and the result of the bending is like As shown in Fig. 2, the flat line inside the corner is flattened to form an R-angle pit. At this time, the thickness of the inner side of the copper wire is squeezed and thickened. According to the width-thickness ratio of the flat line, the flat line of the aspect ratio is larger. The ratio d/t of the inner thickness to the thickness t before the flat line is more than 1 is larger.
  • the present invention is directed to the above-described disadvantages of the prior art, and provides a flat wire wound inductor and a vertical wound inductor.
  • a flat wire vertical winding inductor coil is formed by winding a plurality of flat wires, and the inner side of the flat wire is chamfered
  • the sum of the areas of the chamfers is 3 to 10% of the original cross-sectional area of the flat line.
  • the inner sides of the flat wire have symmetric chamfering.
  • the minimum width a of the flat wire is greater than half of the original width W of the flat wire, and the minimum thickness b of the flat wire is greater than half of the original thickness t of the flat wire, that is, a>0.5 W, b>0.5t.
  • a vertical winding inductor comprising the above-mentioned flat wire vertical winding inductor, a center pillar magnetic core loaded in the flat wire vertical winding inductor, and the outer side of the flat wire vertical winding inductor The cores are joined to form a core yoke that closes the magnetic circuit.
  • the center pillar magnetic core is formed by stacking a plurality of magnetic cores, and a non-magnetic air gap is disposed between the plurality of magnetic cores.
  • the magnetic core yoke is formed by stacking a plurality of magnetic cores, and a non-magnetic air gap is disposed between the plurality of magnetic cores.
  • the beneficial effects of the present invention are as follows:
  • FIG. 1 is a schematic view showing a winding direction of a flat wire vertical winding inductor coil in the prior art
  • FIG. 2 is a schematic view of a flat wire vertical winding inductor coil and a bending angle in the prior art
  • FIG. 3 is a schematic structural view of a flat wire of the present invention.
  • FIG. 4 is a schematic cross-sectional view of a flat wire of the present invention.
  • FIG. 5 is a schematic view of a flat wire wound inductor and a bent angle of the present invention
  • FIG. 6 is a schematic view showing a flat wire wound inductor and a bent angle of the present invention
  • a vertical winding inductor includes a flat wire wound inductor, a center pillar core loaded in the flat wire wound inductor, and the flat wire wound inductor Connecting the middle pillar magnetic core to form a magnetic core yoke for closing the magnetic circuit;
  • the flat wire vertical winding inductor coil is formed by a plurality of ⁇ flat wires, and the inner side of the flat wire has a chamfer 3
  • the area of the chamfer 3 is 3 to 10% of the area of the original section 2 of the flat line, or the inner side of the flat line has a symmetrical chamfer 3, and the sum of the areas of the chamfer 3 is the original section of the flat line.
  • the minimum width a of the flat wire is greater than half of the original width W of the flat wire, and the minimum thickness b of the flat wire is greater than half of the original thickness t of the flat wire, That is, a>0.5W, b>0.5t.
  • the invention has a chamfered area on one side of the flat line, and the chamfered area (loss area) is 3 to 10% of the original cross-sectional area of the flat line. Then, the thin side is turned inward, and the winding bending fixture is pressed against the thin surface of the flat wire to perform inner bending and winding. By reasonably arranging the ratios of a, b and w, t, it is ensured that the R angle is bent and flattened.
  • the vertical winding inductor coil of the present invention has a magnetic core bar inserted therein, and the vertical winding inductor coil is in a linear direction, and the magnetic core does not bend along the length direction of the coil;
  • the vertical winding inductor, the core center pillar, and the core yoke of the present invention have four basic embodiments: a) single winding inductance; b) double winding inductance; c) double winding magnetic integrated inductor; Two-winding magnetically coupled inductor
  • windings of the double-winding and multi-winding inductors of the present invention may be combined in series, parallel, or series-parallel to form different new inductive electromagnetic structures
  • the present invention may also combine the above four basic embodiments to form an inductor of a multi-winding coil
  • the cross-sectional shape of the center pillar magnetic core constituting the inside of the winding of the present invention is not limited to the rectangular or square shape bending winding of the flat wire of the present invention, and is also suitable for increasing the bending radius and winding into a circle.
  • Three basic column cross-sectional shapes such as shape, ellipse and square;
  • the core of the magnetic core and the magnetic core yoke may be formed by stacking one or more magnetic cores, and an air gap may be inserted between the magnetic core segments.

Abstract

Une bobine d'inductance à enroulement vertical à fil plat est formée par enroulement vertical d'une pluralité de fils plats. Des chanfreins sont prévus sur le côté interne du fil plat, et la somme des zones des chanfreins représente 3 à 10 % de la surface de section transversale d'origine du fil plat. Selon la présente invention, un côté du fil plat est chanfreiné, puis le côté mince est amené à être tourné vers l'intérieur, et un gabarit d'enroulement et de cintrage vient en butée contre le côté mince du fil plat pour effectuer une flexion et un enroulement vers l'intérieur, ce qui permet d'assurer que l'épaisseur de la partie latérale interne déformée du fil plat d'enroulement vertical après une flexion d'angle R ne dépasse pas l'épaisseur t du fil, de sorte qu'une bobine d'inductance d'enroulement vertical répondant à la condition de L=n×t peut être obtenue. De plus, la surface de section transversale d'un fil de cuivre de la bobine ne devrait évidemment pas diminuer, de sorte que la bobine est maintenue de sorte à approcher la densité de support de fil d'un fil d'enroulement vertical classique.
PCT/CN2018/114573 2018-04-17 2018-11-08 Bobine d'inductance à enroulement vertical à fil plat et inducteur à enroulement vertical WO2019200897A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201810345310.5A CN108305743A (zh) 2018-04-17 2018-04-17 一种扁平线立绕电感线圈及立绕电感器
CN201810345310.5 2018-04-17

Publications (1)

Publication Number Publication Date
WO2019200897A1 true WO2019200897A1 (fr) 2019-10-24

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Application Number Title Priority Date Filing Date
PCT/CN2018/114573 WO2019200897A1 (fr) 2018-04-17 2018-11-08 Bobine d'inductance à enroulement vertical à fil plat et inducteur à enroulement vertical

Country Status (2)

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CN (1) CN108305743A (fr)
WO (1) WO2019200897A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108305743A (zh) * 2018-04-17 2018-07-20 深圳市沐磁科技有限公司 一种扁平线立绕电感线圈及立绕电感器
JP7253149B2 (ja) * 2020-04-20 2023-04-06 株式会社村田製作所 巻線体、及び巻線体の製造方法、並びにコイル部品

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104269242A (zh) * 2014-10-28 2015-01-07 田村（中国）企业管理有限公司 弧形立绕式电感器
CN108305743A (zh) * 2018-04-17 2018-07-20 深圳市沐磁科技有限公司 一种扁平线立绕电感线圈及立绕电感器
CN208271679U (zh) * 2018-04-17 2018-12-21 深圳市伊戈尔沐磁科技有限公司 一种扁平线立绕电感线圈及立绕电感器

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104269242A (zh) * 2014-10-28 2015-01-07 田村（中国）企业管理有限公司 弧形立绕式电感器
CN108305743A (zh) * 2018-04-17 2018-07-20 深圳市沐磁科技有限公司 一种扁平线立绕电感线圈及立绕电感器
CN208271679U (zh) * 2018-04-17 2018-12-21 深圳市伊戈尔沐磁科技有限公司 一种扁平线立绕电感线圈及立绕电感器

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