WO1999003116A1 - Bobine - Google Patents
Bobine Download PDFInfo
- Publication number
- WO1999003116A1 WO1999003116A1 PCT/JP1998/002867 JP9802867W WO9903116A1 WO 1999003116 A1 WO1999003116 A1 WO 1999003116A1 JP 9802867 W JP9802867 W JP 9802867W WO 9903116 A1 WO9903116 A1 WO 9903116A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- core
- coil
- rod
- shaped
- annular
- Prior art date
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
- H01F27/28—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
-
- 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
- H01F27/24—Magnetic cores
Definitions
- the present invention relates to a coil. More specifically, it is composed of an annular core and a bar-shaped core superposed on its surface, and has a structure in which a conductive material is wound around the bar-shaped core, which has low iron loss and is easy to manufacture. This is related to the use of cinnamon in transformers and cylinders.
- coils used for electric and electronic circuits are manufactured by winding a conductive material such as a copper wire around a rod-shaped, pipe-shaped or ring-shaped magnetic material.
- a conductive material such as a copper wire
- toroidal coils in which a copper wire is wound around a ring-shaped magnetic material have recently been widely used for high-frequency circuits and the like.
- a coil using a wound core formed by winding a thin strip of a magnetic material into a rectangular ring is also widely used.
- the work of winding a copper wire on an iron core having no end, such as a toroidal coil is complicated, automation is not easy, and the iron core and the winding form are various. Due to changes, it is difficult to produce efficiently and there is a limit to improving mass productivity.
- the inventor of the present invention has solved the above problems, and has studied the structure of a coil which is manufactured by a simple process, has excellent mass productivity, is economically advantageous, and has a small iron loss.
- a conventional core in which a copper wire is wound around a core made of an annular core and a rod-shaped core superposed on the surface of the annular core, and a conductive material wound around the rod-shaped core.
- the present inventors have found that it is possible to produce a coil with higher productivity and a smaller iron loss as compared with the paste, and have reached the present invention.
- At least one rod-shaped core having a length longer than the inner diameter of the annular core is fixed on the surface of the annular core made of an amorphous metal or a microcrystalline metal, A coil formed by winding a conductive material around the rod-shaped core.
- the most preferable structure is such that the length between the two annular core surfaces is smaller than the inner diameter of the annular core. This is a coil in which at least one bar-shaped core is inserted and fixed, and a conductive material is wound around the bar-shaped core.
- FIG. 1 is an example of a sketch of the coil of the present invention.
- FIG. 2 is a sketch of another example of the coil of the present invention.
- Fig. 3 shows the magnetic flux density versus iron loss curves of the coil of the present invention and the conventional core core coil.
- FIG. 4 shows a superimposed current-inductance curve in the coil of the present invention.
- a Magnetic flux density-iron loss curve in the coil of the present invention is a Magnetic flux density-iron loss curve in the coil of the present invention.
- FIG. 1 is an example of a sketch of the coil of the present invention.
- a coil 1 is composed of two annular cores 2 and 2 and a bar-shaped core 5 inserted and fixed between the pair of annular cores, and a copper wire 6 is wound around the bar-shaped core 5. .
- the annular core of the coil is made of an amorphous metal or a microcrystalline metal, and a tape 7 of such a metal is wound in an annular shape and laminated to form an iron core.
- a coil having a small iron loss can be obtained.
- Amorphous metal is a metal that does not have a crystal structure obtained by quenching molten metal, and its alloy composition requires Fe, Co, Ni, and especially Fe as transition metal components.
- An alloy containing B, C, P or Si as a nonmetallic component is suitable as the core material of the coil of the present invention in terms of low iron loss and high saturation magnetic density. I have.
- the microcrystalline metal is an ultrafine crystalline soft magnetic alloy material having a basic composition of Fe, Si, and B, and a small amount of Cu, Nb, Ta, Mo, and Zr.
- An alloy with a composition added with such elements as an amorphous metal tape formed by the melt quenching method and then heat-treated and crystallized to form ultra-fine crystal grains of about 1 O nm. It is.
- the shape of the annular core is generally a rectangular ring consisting of a long side 3 and a short side 4 as shown in Fig. 1, but it can also be circular or elliptical.
- the iron core is manufactured by winding a long tape of amorphous metal or microcrystalline metal around a metal core and laminating the tape.
- a coil is formed by laminating a rod-shaped core on at least one ring-shaped core and winding a conductive material around the rod-shaped core.
- two or more ring-shaped cores are used.
- a high inductance can be obtained for a constant current, which is advantageous in terms of electromagnetic performance and manufacturing.
- the inductance decreases as the current intensity increases, but as shown in Fig.
- the inductance of the coil in which a rod-shaped core is superposed on a single annular core is shown in Fig. 2.
- the effect is that the decrease tendency is small and a high inductance can be maintained at a large current, and the structure can be appropriately selected according to the application.
- the number of rod-shaped cores to be superimposed on the annular core is usually one, but two or more cores may be used.
- the magnetic material used as the rod-shaped iron core there is no particular limitation on the magnetic material used as the rod-shaped iron core, and in addition to the amorphous metal, microcrystalline metal, silicon steel plate, and ferrite used in the annular iron core, ferrite and metal. — You can also use Malloy.
- the position of the rod-shaped core with respect to the annular core is not particularly limited as long as it can be superimposed on the surface of the annular core, but if the annular core is a rectangular ring, it is parallel to one side, particularly the long side 3. Therefore, it is preferable to place it in the center of the annular core.
- the length of the rod-shaped core must be longer than the inner frame of the ring-shaped core so that the rod-shaped core can be overlapped. Normally, use a frame that is equal to, slightly shorter than, or longer than the length of the outer frame.
- the shape of the rod-shaped core can be any shape. A rectangular shape with the same effective area is most preferred.
- the shape of the rod-shaped core is a thin laminate or a block.
- a thin tape-shaped material such as an amorphous metal, a microcrystalline metal, or a silicon steel sheet
- a large number of thin sheets of the same shape are laminated.
- a thin plate may be wound into a cylindrical shape.
- a resin such as an epoxy resin may be impregnated and fixed.
- a fly a block-like material is used.
- the rod-shaped core is a magnetic tape as shown in FIG. It is preferable that the layers are laminated so that the direction is perpendicular to the plane direction of the annular core (in FIG. 1, the width direction of the tape 8 is vertical and perpendicular to the plane of the annular core placed horizontally).
- the lamination surface 8 is composed of the lamination surface of the amorphous metal / microcrystalline metal tape 7 forming the annular core and the ring core in a position parallel to the rod-shaped core.
- the magnetic tape forming the annular core and the magnetic tape forming the rod-shaped core do not come into contact with each other on the sides of the tape (the long side 3 in Fig. 1). Fewer iron losses are advantageous as well.
- the rod-shaped core is superimposed on the surface of the ring-shaped core or fixed between the surfaces of two ring-shaped cores, but the contact part 9 between the rod-shaped core and the ring-shaped core is separated depending on the use of the coil.
- the contact surface may be polished so that the gap is as small as possible, but in the case of a choke coil, an appropriate contact may be made as shown in Fig. 2. Gap 10 is provided.
- a gap is provided by a coil with a rod-shaped core sandwiched between the surfaces of two ring-shaped cores, a gap is provided between the upper and lower ring-shaped cores at both ends where the rod-shaped core comes into contact with the ring-shaped core.
- An electrically conductive material is wound around the rod-shaped core, thereby forming a coil. Copper wire is the most common conductive material. The number of turns can be arbitrarily selected depending on the application.
- the conductive material may be directly wound on a rod-shaped iron core, or may be wound on a bobbin or the like and covered on the rod-shaped iron core. In any case, in the present invention, the copper wire is wound around the rod-shaped iron core, so that the operation is extremely simple.
- the coil is formed by winding the copper wire around the rod-shaped core, so that the coil can be used as it is, but if necessary, the copper wire is also wound around the ring-shaped core. You may.
- the coil of the present invention can be manufactured only by combining an annular core and a rod-shaped core wound with a conductive material, it is possible to manufacture a coil of an arbitrary size. It can be appropriately selected depending on the required performance.
- the coil of the present invention is not only easy to manufacture and economically advantageous, but also has the effects of reducing iron loss and energy consumption.
- a copper wire is wound around a rod-shaped iron core, and the copper wire is confined in a frame of an annular iron core sandwiching the copper wire, so that the entire structure has a compact structure. Therefore, the size of the device can be reduced.
- the coil of the present invention is used for transformers and choke coils.
- the gap at the contact between the rod-shaped core and the ring-shaped core is adjusted appropriately.
- Amorphous metal ribbon (manufactured by Nippon Amorphous Metals Co., Ltd., "Metglass" composition: Fe as the main component, containing Ni, Si and B) is placed around the rectangular core. Wrapped around each other to form a rectangular inner frame size 60 x 55 mm, outer frame size Two rectangular annular cores with a size of 75 x 70 mm and a height of 10 mm were created. Separately, the above-mentioned amorphous metal ribbon (width 10 mm) is laminated to form a rod of length 80, width (tape lamination direction) 30 mm, and height (tape width direction) 10 mm. An iron core was made, and a copper wire wound with 50 turns was sandwiched between the two rectangular annular wound iron cores to form a coil as shown in Fig. 1.
- the core loss was measured using Yokogawa Seisakusho's "Digital Power Meter” 2532 with the frequency 1 KHz and the magnetic flux density. The results are shown in Fig. 3A.
- Example 2 The same amorphous metal ribbon used in Example 1 was wound around a rectangular core and laminated, and the rectangular inner frame size was 70 x 20 mm, the outer frame size was 105 x 52 mm, and the height was high.
- a cut core was created by cutting the center of the long side of a 25 mm-long rectangular iron core, and a copper wire was wound around the core with 50 turns to make a cut core coil.
- the core of the present invention has lower iron loss and lower energy-loss than the conventional cut core coil in which a copper wire is wound around the cut core. .
- one of the rectangular annular cores used for the coil of Example 1 and the rod-shaped core were provided with 3 mm gaps 10 at the contact portions (two places).
- the iron cores were stacked and fixed to form a choke coil.
- the relationship between the superimposed current and the inductance at a frequency of 1 KHz was measured, and the DC superimposition characteristics were evaluated.
- the results are shown in Fig. 4a.
- Example 2 The same amorphous metal ribbon as used in Example 1 had a gap of 6 mm in outer diameter, 35 mm in inner diameter, 25 mm in width and 3 mm, and the core weight was lower than that in Example 1. A toroidal coil was created by winding a copper wire with the number of turns of 47 to create a toroidal coil, which was almost the same as the coil of Step 1. The relationship with the inductance was measured, and the DC bias characteristics were evaluated. The results are shown in Figure 4b.
- the method of the present invention makes it possible to obtain a coil in which the decrease in inductance due to an increase in current is smaller than that of a conventional toroidal coil.
- the coil can be obtained only by inserting the rod-shaped core in which the conductive material is wound around the annular core, so that the production is extremely simple as compared with the conventional coil in which the copper wire is wound around the annular core. .
- the coil of the present invention has less iron loss than a conventional coil core using a core, so that energy can be saved, and a coil whose inductance is less reduced due to an increase in current can be obtained. It can be used in a wide range of applications such as transformers and choke coils.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Or Transformers For Communication (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
- Soft Magnetic Materials (AREA)
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98929707A EP0938106A4 (en) | 1997-07-11 | 1998-06-26 | KITCHEN SINK |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9/186782 | 1997-07-11 | ||
JP9186782A JPH1131613A (ja) | 1997-07-11 | 1997-07-11 | コイル |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999003116A1 true WO1999003116A1 (fr) | 1999-01-21 |
Family
ID=16194511
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1998/002867 WO1999003116A1 (fr) | 1997-07-11 | 1998-06-26 | Bobine |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0938106A4 (ja) |
JP (1) | JPH1131613A (ja) |
KR (1) | KR20000068543A (ja) |
CN (1) | CN1231057A (ja) |
WO (1) | WO1999003116A1 (ja) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002217043A (ja) | 2001-01-22 | 2002-08-02 | Nec Tokin Corp | インダクタ部品 |
KR100850030B1 (ko) * | 2006-09-19 | 2008-08-04 | 최인실 | 슬림형 자기회로 소자 |
CN102339668A (zh) * | 2010-07-26 | 2012-02-01 | 周尧达 | 节能灯的电感镇流器 |
DE102015205762A1 (de) * | 2014-04-04 | 2015-10-08 | Yazaki Corporation | Spulenbefestigungsstruktur |
DE102018113826A1 (de) * | 2018-06-11 | 2019-12-12 | Eugen Forschner Gmbh | Vorrichtung zur Verbesserung der Elektromagnetischen Verträglichkeit |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58140625U (ja) * | 1982-03-16 | 1983-09-21 | 東亜通信工業株式会社 | 変成器 |
JPS5926209U (ja) * | 1982-08-10 | 1984-02-18 | 松下電器産業株式会社 | 薄形トランス |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE383436B (sv) * | 1974-07-12 | 1976-03-08 | Asea Ab | Transformator for spenningsprovning |
JPS58147011A (ja) * | 1982-02-25 | 1983-09-01 | Matsushita Electric Ind Co Ltd | 薄形トランス |
JPS58162014A (ja) * | 1982-03-19 | 1983-09-26 | Matsushita Electric Ind Co Ltd | 薄形トランス |
JP2515435B2 (ja) * | 1991-01-31 | 1996-07-10 | 太陽誘電株式会社 | トランス |
-
1997
- 1997-07-11 JP JP9186782A patent/JPH1131613A/ja active Pending
-
1998
- 1998-06-26 WO PCT/JP1998/002867 patent/WO1999003116A1/ja not_active Application Discontinuation
- 1998-06-26 KR KR1019997002056A patent/KR20000068543A/ko not_active Application Discontinuation
- 1998-06-26 EP EP98929707A patent/EP0938106A4/en not_active Withdrawn
- 1998-06-26 CN CN98800951A patent/CN1231057A/zh active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58140625U (ja) * | 1982-03-16 | 1983-09-21 | 東亜通信工業株式会社 | 変成器 |
JPS5926209U (ja) * | 1982-08-10 | 1984-02-18 | 松下電器産業株式会社 | 薄形トランス |
Non-Patent Citations (1)
Title |
---|
See also references of EP0938106A4 * |
Also Published As
Publication number | Publication date |
---|---|
CN1231057A (zh) | 1999-10-06 |
JPH1131613A (ja) | 1999-02-02 |
EP0938106A1 (en) | 1999-08-25 |
EP0938106A4 (en) | 2000-11-29 |
KR20000068543A (ko) | 2000-11-25 |
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