JP2018074096A

JP2018074096A - Electromagnetic component

Info

Publication number: JP2018074096A
Application number: JP2016215996A
Authority: JP
Inventors: 将司酒井; Shoji Sakai; 勇太瓜生; Yuta Uryu
Original assignee: Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Corp
Priority date: 2016-11-04
Filing date: 2016-11-04
Publication date: 2018-05-10
Anticipated expiration: 2036-11-04
Also published as: JP6234538B1

Abstract

PROBLEM TO BE SOLVED: To provide an electromagnetic component in which heat dissipation was improved while reducing the size and cost more than a conventional planar transformer.SOLUTION: An electromagnetic component includes a primary winding 4 and a secondary winding 6, which are planar windings formed by winding a round wire spirally in one layer, a first insulation cover 3 for insulating the primary winding 4 and a magnetic substance 2 and having openings 33, 34 for exposing the primary winding 4, a second insulation cover 7 for insulating the secondary winding 6 and the magnetic substances 2, 8 and having openings 73, 74 for exposing the secondary winding 6, and a planar insulation member 5 interposed between the primary winding 4 and secondary winding 6 and insulating them. Primary winding terminal 4a of the primary winding 4 and secondary winding terminal 6a of the secondary winding 6 are raised to the same side (upper side).SELECTED DRAWING: Figure 1

Description

この発明は、電力変換を行う装置に搭載されるトランス等の電磁部品の構造に関するもので、特に電気自動車やハイブリッド車など、モータを駆動源の一つとする電動自動車に搭載されるインバータやＤＣ/ＤＣコンバータ、充電器等に搭載される電磁部品に関する。 The present invention relates to the structure of an electromagnetic component such as a transformer mounted on a device that performs power conversion. In particular, the present invention relates to an inverter or DC / DC mounted on an electric vehicle having a motor as one of its drive sources such as an electric vehicle and a hybrid vehicle. The present invention relates to electromagnetic components mounted on DC converters, chargers, and the like.

電動自動車やハイブリッド車に搭載される電力変換装置には、モータを駆動するためのインバータ、高圧バッテリ電圧から１２Ｖ系バッテリ電圧に降圧するＤＣ/ＤＣコンバータ、１２Ｖ系バッテリ電圧から高圧バッテリ電圧に昇圧するＤＣ/ＤＣコンバータ、商用電源から高圧バッテリに充電するための充電器、高圧バッテリからＡＣ１００Ｖを生成するインバータ等の、種々の電力変換装置が搭載されている。
近年の電動自動車やハイブリッド車に要求される環境においては、各種製品の小型化、低コスト化の要求が非常に強く、車両に搭載される各種電力変換装置も例外ではない。
これらの電力変換装置に搭載される電磁部品の小型化、低コスト化を実現する手段の有力は手法の一つにスイッチング周波数の高速化がある。スイッチング周波数の高速化は、巨大で高価なトランス等を小型化、低コスト化できることから、各種電磁部品において非常に重要な技術開発要素の一つである。 In a power conversion device mounted on an electric vehicle or a hybrid vehicle, an inverter for driving a motor, a DC / DC converter for stepping down from a high voltage battery voltage to a 12V battery voltage, and a voltage boosting from a 12V battery voltage to a high voltage battery voltage Various power conversion devices such as a DC / DC converter, a charger for charging a high voltage battery from a commercial power source, and an inverter for generating AC 100 V from the high voltage battery are mounted.
In the environment required for electric vehicles and hybrid vehicles in recent years, there is a strong demand for downsizing and cost reduction of various products, and various power conversion devices mounted on vehicles are no exception.
One of the promising means for realizing miniaturization and cost reduction of electromagnetic components mounted on these power converters is to increase the switching frequency. Speeding up the switching frequency is one of the very important technological development elements in various electromagnetic components because it can reduce the size and cost of huge and expensive transformers.

ところが、これらの装置に搭載されるトランス等は、その小型化を実現しようとすると必然的に発熱密度が増大するため、各構成部品を性能保障温度以下にさせることが困難となる。
従って、電気的な特性だけで小型化を進めることが非常に困難で、トランス等の更なる放熱性能の向上が必要不可欠といった課題がある。
トランス等の発熱要素は、主に巻線の銅損による発熱と、コア内部の鉄損による発熱に大別されるが、一般的な基本構造としては、銅線が巻回されたボビンをコアの脚部に挿入する構造であるため、巻線の放熱経路は、巻線最外周面への伝熱、あるいはコアを経由した放熱経路が主となる。
ただし、コア自身も鉄損により発熱するため、コア経由の放熱が有効にはなり難く、逆にコア自身の更なる温度上昇を招く。
また、巻数が増加する場合は、巻線自身の放熱面積が外周に限られていることから内部に熱がこもりやすい。 However, the transformers and the like mounted on these devices inevitably increase in heat generation density when it is attempted to reduce the size thereof, so that it is difficult to set each component below the guaranteed temperature.
Therefore, it is very difficult to reduce the size only by electrical characteristics, and there is a problem that further improvement of heat dissipation performance of a transformer or the like is indispensable.
Heating elements such as transformers are mainly divided into heat generation due to copper loss in the windings and heat generation due to iron loss inside the core. As a general basic structure, a bobbin wound with copper wire is used as the core. Therefore, the heat dissipation path of the winding is mainly the heat transfer to the outermost peripheral surface of the winding or the heat dissipation path via the core.
However, since the core itself also generates heat due to iron loss, it is difficult for heat dissipation via the core to be effective, and conversely, the core itself further increases in temperature.
In addition, when the number of turns increases, the heat radiation area of the winding itself is limited to the outer periphery, so that heat tends to be trapped inside.

そこで、トランス等の積極的な放熱性向上策としては、金属などの放熱用ケース内にトランス本体を収納し、ポッティング材などの充填材を充填することで放熱の阻害要因となる空間を埋め、巻線最外周やコアの露出面から放熱用ケースへの熱抵抗を低減し、放熱性を向上させる策が一般的に用いられる手法が提案されている。 Therefore, as a positive heat dissipation improvement measure such as transformers, the transformer body is housed in a heat dissipation case such as metal and filled with fillers such as potting materials to fill the space that hinders heat dissipation, There has been proposed a method in which a measure for reducing heat resistance from the outermost winding of the winding or the exposed surface of the core to the heat radiating case and improving heat radiation is generally used.

また、トランス等の小型については、従来の巻線トランスの代わりに、平面上に旋回した巻線構造であるプレーナトランスが検討されている。
プレーナトランスの巻線は、多層プリント基板の異なる層に１次巻線の平面コイルパターン及び２次巻線の平面コイルパターンで構成するものや、バスバーを用いて巻線を構成するものがある。プレーナトランスは、構造的に従来の巻線トランスよりも低背化が可能となる。 In addition, as a small transformer such as a transformer, a planar transformer having a winding structure that is swung on a plane has been studied in place of a conventional winding transformer.
There are two types of planar transformer windings: a primary coil planar coil pattern and a secondary coil planar coil pattern formed on different layers of a multilayer printed circuit board, and a bus bar configured winding. The planar transformer is structurally lower in height than a conventional winding transformer.

特開２０１６−１５４５３号公報JP 2016-15453 A

しかしながら、トランスの小型化については、多層プリント基板を用いたプレーナトランスでは、基板厚みに限界があり、大電流を扱う場合はコイルパターン幅を太くする必要がある。また、隣り合うパターンとの絶縁が必要となるため、絶縁層が必要となり、投影面積方向に拡大するため小型化が困難となる。小型化が困難と言うことは、低コスト化も困難となる。 However, with regard to miniaturization of the transformer, in a planar transformer using a multilayer printed board, there is a limit to the board thickness, and it is necessary to increase the coil pattern width when handling a large current. In addition, since insulation from adjacent patterns is required, an insulating layer is required, and the size is difficult to reduce because it expands in the projected area direction. When it is difficult to reduce the size, it is also difficult to reduce the cost.

この発明は、これらの課題を解決するためになされたもので、従来のプレーナトランスよりも小型化で低コスト化でありながら放熱性も向上した電磁部品を提供することを目的とする。 The present invention has been made to solve these problems, and it is an object of the present invention to provide an electromagnetic component that is smaller and lower in cost than a conventional planar transformer but has improved heat dissipation.

この発明に係る電磁部品は、磁性体を介して電磁結合される１次巻線と２次巻線とを有する電磁部品において、前記１次巻線および前記２次巻線はいずれも、丸線が渦巻き状に１層で巻かれた平板状の巻線であり、前記１次巻線と前記磁性体とを絶縁し前記１次巻線を露出させる開口部を有する第１の絶縁カバーと、前記２次巻線と前記磁性体とを絶縁し前記２次巻線を露出させる開口部を有する第２の絶縁カバーと、前記１次巻線と前記２次巻線との間に介在し前記１次巻線と前記２次巻線とを絶縁する平面状絶縁部材とを備え、前記１次巻線の１次巻線端子と前記２次巻線の２次巻線端子とが同じ側に立ち上げられているものである。 The electromagnetic component according to the present invention is an electromagnetic component having a primary winding and a secondary winding that are electromagnetically coupled via a magnetic material, and the primary winding and the secondary winding are both round wires. Is a flat plate-like winding wound in one layer in a spiral shape, and a first insulating cover having an opening that insulates the primary winding from the magnetic body and exposes the primary winding; A second insulating cover having an opening that insulates the secondary winding and the magnetic body and exposes the secondary winding; and is interposed between the primary winding and the secondary winding, and A planar insulating member that insulates the primary winding and the secondary winding, and the primary winding terminal of the primary winding and the secondary winding terminal of the secondary winding are on the same side It has been launched.

この発明に係る電磁部品によれば、多層プリント基板を用いたプレーナトランスよりも、小型化で低コスト化でありながら放熱性も向上した電磁部品を提供できる。 According to the electromagnetic component according to the present invention, it is possible to provide an electromagnetic component that is smaller and less expensive than a planar transformer that uses a multilayer printed circuit board but has improved heat dissipation.

本発明の実施の形態１の電磁部品の斜視図である。It is a perspective view of the electromagnetic component of Embodiment 1 of this invention. 図１の電磁部品の分解図である。It is an exploded view of the electromagnetic component of FIG. 図１のＡ−Ａ線における断面を矢印方向に見た電磁部品の断面図である。It is sectional drawing of the electromagnetic component which looked at the cross section in the AA line of FIG. 1 in the arrow direction. 本発明の実施の形態２の電磁部品の絶縁シートの図である。It is a figure of the insulating sheet of the electromagnetic component of Embodiment 2 of this invention. 本発明の実施の形態３の電磁部品の絶縁シートの図である。It is a figure of the insulating sheet of the electromagnetic component of Embodiment 3 of this invention. 本発明の実施の形態３の電磁部品の断面図である。It is sectional drawing of the electromagnetic component of Embodiment 3 of this invention. 本発明の実施の形態４の電磁部品の１次巻線、２次巻線の図である。It is a figure of the primary winding of the electromagnetic component of Embodiment 4 of this invention, and a secondary winding. 本発明の実施の形態５の電磁部品の斜視図である。It is a perspective view of the electromagnetic component of Embodiment 5 of this invention. 本発明の実施の形態５の電磁部品の裏側斜視図である。It is a back side perspective view of the electromagnetic component of Embodiment 5 of this invention. 本発明の実施の形態６の電磁部品の上側絶縁ケースと２次巻線との配置、大きさの関係を下面側から見た図である。It is the figure which looked at the relationship between arrangement | positioning and magnitude | size of the upper side insulation case and secondary winding of the electromagnetic component of Embodiment 6 of this invention from the lower surface side. 本発明の実施の形態７の電磁部品の２次巻線の平面図である。It is a top view of the secondary winding of the electromagnetic component of Embodiment 7 of this invention. 本発明の実施の形態８の電磁部品の斜視図である。It is a perspective view of the electromagnetic component of Embodiment 8 of this invention. 図１２の電磁部品の一部分解図である。It is a partial exploded view of the electromagnetic component of FIG. 図１２のＢ−Ｂ線における断面を矢印の方向に見た断面図である。It is sectional drawing which looked at the cross section in the BB line of FIG. 12 in the direction of the arrow. 本発明の実施の形態１０の電磁部品の斜視図である。It is a perspective view of the electromagnetic component of Embodiment 10 of this invention. 図１５の電磁部品の一部分解図である。FIG. 16 is a partially exploded view of the electromagnetic component of FIG. 15. 図１５のＣ−Ｃ線において一部を断面にしてＣ方向にみた電磁部品の一部断面の側面図である。It is the side view of the partial cross section of the electromagnetic component which looked at the C direction by making a part into a cross section in the CC line of FIG. 本発明の実施の形態１２の電磁部品の断面図である。It is sectional drawing of the electromagnetic component of Embodiment 12 of this invention. 本発明の実施の形態１３の電磁部品の斜視図である。It is a perspective view of the electromagnetic component of Embodiment 13 of this invention. 図１９におけるＤ部の拡大図である。It is an enlarged view of the D section in FIG. 本発明の実施の形態１４の電磁部品の断面図である。It is sectional drawing of the electromagnetic component of Embodiment 14 of this invention. 本発明の実施の形態１４の電磁部品の斜視図である。It is a perspective view of the electromagnetic component of Embodiment 14 of this invention.

以下、この発明の各実施の形態について図に基づいて説明するが、各図において同一、または相当部材、部位については同一符号を付して説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same or equivalent members and parts will be described with the same reference numerals.

実施の形態１．
図１から３は、本発明の実施の形態１に係る電磁部品を示す図である。図１は、本発明の実施の形態１の電磁部品を示す図である。図２は、図１の電磁部品の分解図である。図３は、図１の電磁部品の断面図である。実装するケースおよび、注入される放熱部材は省略している。 Embodiment 1 FIG.
1 to 3 are diagrams showing an electromagnetic component according to Embodiment 1 of the present invention. FIG. 1 is a diagram showing an electromagnetic component according to Embodiment 1 of the present invention. FIG. 2 is an exploded view of the electromagnetic component of FIG. FIG. 3 is a cross-sectional view of the electromagnetic component of FIG. A case to be mounted and a heat dissipation member to be injected are omitted.

この電磁部品１は、Ｉ型磁性体８の上に下側絶縁カバー７、２次巻線６、平面状絶縁部材５、１次巻線４、第１の絶縁カバーである上側絶縁カバー３、Ｅ型磁性体２の順に積層され、第２の絶縁カバーである下側絶縁カバー７、２次巻線６、絶縁板５、１次巻線４、上側絶縁カバー３の中央には中央孔３０があり、この中央孔３０と１次巻線４の中央孔４０と絶縁板５の中央孔５０と２次巻線６の中央孔６０と下側絶縁カバー７の中央孔７０とを、Ｅ型磁性体２の中央脚が貫通し、中央孔３０，４０，５０，６０，７０を貫通したＥ型磁性体２の中央脚がＩ型磁性体８の中央部と接触し、Ｅ型磁性体２の両端脚とＩ型磁性体８の両端部とが上側絶縁カバー３および下側絶縁カバー７の各々の外側で接触することにより、Ｅ型磁性体２とＩ型磁性体８とにより閉磁路を形成する構成となっている。
１次巻線４が通電されるとＥ型磁性体２およびＩ型磁性体８を介して電磁結合された２次巻線６に所定の電圧が誘起され、２次巻線６の所定の出力電圧が、車載のインバータ、車載のＤＣ/ＤＣコンバータ、充電器、等に活用される。 The electromagnetic component 1 includes a lower insulating cover 7, a secondary winding 6, a planar insulating member 5, a primary winding 4, and an upper insulating cover 3 that is a first insulating cover on an I-type magnetic body 8. The E-type magnetic body 2 is laminated in this order, and a central hole 30 is formed at the center of the lower insulating cover 7, the secondary winding 6, the insulating plate 5, the primary winding 4, and the upper insulating cover 3 as the second insulating cover. The central hole 30, the central hole 40 of the primary winding 4, the central hole 50 of the insulating plate 5, the central hole 60 of the secondary winding 6, and the central hole 70 of the lower insulating cover 7 are formed into an E type. The central leg of the magnetic body 2 passes through, and the central leg of the E-type magnetic body 2 that passes through the central holes 30, 40, 50, 60, 70 comes into contact with the central portion of the I-type magnetic body 8. The two end legs of the I-type magnetic body 8 and the both end portions of the I-type magnetic body 8 are in contact with each other outside the upper insulating cover 3 and the lower insulating cover 7. It has a configuration which forms a closed magnetic path by the body 8.
When the primary winding 4 is energized, a predetermined voltage is induced in the secondary winding 6 electromagnetically coupled through the E-type magnetic body 2 and the I-type magnetic body 8, and a predetermined output of the secondary winding 6 is generated. The voltage is used for an in-vehicle inverter, an in-vehicle DC / DC converter, a charger, and the like.

平面状絶縁部材５は１次巻線４と２次巻線６との間の絶縁を確保するもので、本実施の形態１では、例えば、板厚の厚い剛性の樹脂成形部材で構成され、１次巻線４と２次巻線６のいずれよりも投影方向の平面面積を広く形成してある。即ち、平面状絶縁部材５は平面的に見た形状がほぼ四角形をなし、その平面的に見たＸＹ方向の寸法（平面的に見た縦横の寸法）が、１次巻線４および２次巻線６の平面的に見たＸＹ方向の寸法（平面的に見た縦横の寸法）より大きく、１次巻線４と２次巻線６と間の絶縁を十分確保し絶縁の信頼性を向上してある。換言すれば、１次巻線４および２次巻線６の平面的に見た大きさは、平面状絶縁部材５からはみ出さない大きさである。また、１次巻線４と２次巻線６との間には平面状絶縁部材５が介在しているので、平面的に見た場合、１次巻線４と２次巻線６とが空間を介して直接対向することのない構造となっている。 The planar insulating member 5 ensures insulation between the primary winding 4 and the secondary winding 6, and in the first embodiment, for example, the planar insulating member 5 is composed of a rigid resin molded member having a large plate thickness, The plane area in the projection direction is formed wider than both the primary winding 4 and the secondary winding 6. That is, the planar insulating member 5 has a substantially quadrangular shape in plan view, and the dimensions in the XY direction (vertical and horizontal dimensions in plan view) in the plan view are the primary winding 4 and the secondary winding. Larger than the dimension of the winding 6 in the XY direction as viewed in a plane (vertical and horizontal dimensions as viewed in a plane), sufficient insulation between the primary winding 4 and the secondary winding 6 is ensured, and the insulation reliability is increased. It has improved. In other words, the size of the primary winding 4 and the secondary winding 6 viewed in a plane is a size that does not protrude from the planar insulating member 5. Further, since the planar insulating member 5 is interposed between the primary winding 4 and the secondary winding 6, when viewed in plan, the primary winding 4 and the secondary winding 6 are It has a structure that does not directly face through the space.

上側絶縁カバー３は１次巻線４とＥ型磁性体２との絶縁を確保、下側絶縁カバー７は２次巻線６とＩ型磁性体８との絶縁を確保するもので、絶縁部材、例えば成形部材で構成されている。 The upper insulating cover 3 ensures insulation between the primary winding 4 and the E-type magnetic body 2, and the lower insulating cover 7 ensures insulation between the secondary winding 6 and the I-type magnetic body 8. For example, it is formed of a molded member.

１次巻線４の端子４ａと２次巻線６の端子６ａは上側絶縁カバー３の端子位置決め穴３ａに挿入され、位置決め及び、絶縁カバーによる他部品が近接した場合でも絶縁が確保される。
１次巻線４と２次巻線６はいずれも金属線、例えば銅の丸線であり、図示のように、丸線を束ねるためのテープ９によって、１次巻線４および２次巻線６の各々の直線部の各４箇所で束ねられている。 The terminal 4a of the primary winding 4 and the terminal 6a of the secondary winding 6 are inserted into the terminal positioning holes 3a of the upper insulating cover 3, and insulation is ensured even when positioning and other components by the insulating cover are close to each other.
The primary winding 4 and the secondary winding 6 are both metal wires, for example, copper round wires. As shown in the figure, the primary winding 4 and the secondary winding are formed by tape 9 for bundling the round wires. 6 is bundled at each of the four portions of each straight portion.

また、１次巻線４および２次巻線６はいずれも、銅の丸線を使用して中央孔４０，６０の周りに同心的に平面状に渦巻き状に巻回した構造であるため、プリント基板のパターンやバスバーよりも端子の引き回しが容易であり、電気回路の構成の自由度が高くなり、さらに、従来のプリント基板で構成するプレーナトランスより、投影面積方向の小型化可能となる。即ち、平面方向に見た１次巻線４および２次巻線６の各々の外径寸法が、従来のプリント基板で構成するプレーナトランスの平面方向に見た外径寸法に比べて小さくなる。
また、上側絶縁カバー３および下側絶縁カバー７は、１次巻線４とＥ型磁性体２との絶縁確保、２次巻線６とＩ型磁性体８との絶縁を確保するために必要な個所以外の平面方向部の範囲には開口部３３，３４，７３，７４が設けられており、放熱性を向上させる構成となっている。 In addition, since the primary winding 4 and the secondary winding 6 are both concentric and spirally wound around the central holes 40 and 60 using copper round wires, Terminals can be routed more easily than printed circuit board patterns and bus bars, the degree of freedom in the configuration of the electric circuit is increased, and further, the size of the projected area can be reduced compared to a planar transformer formed of a conventional printed circuit board. That is, the outer diameter size of each of the primary winding 4 and the secondary winding 6 seen in the planar direction is smaller than the outer diameter size seen in the planar direction of the planar transformer formed of the conventional printed circuit board.
The upper insulating cover 3 and the lower insulating cover 7 are necessary for ensuring insulation between the primary winding 4 and the E-type magnetic body 2 and ensuring insulation between the secondary winding 6 and the I-type magnetic body 8. Openings 33, 34, 73, and 74 are provided in the range of the plane direction portion other than the special portions, and the heat dissipation is improved.

このような構成にすることによって、大電流を流しても、多層プリント基板を用いたプレーナトランスよりも、投影面積方向に小型化が可能となり、巻線自身の放熱面積が拡大した電磁部品を提供できる。
また、バスバーを用いたプレーナトランスよりも銅線の方が低コストなため、低コストな電磁部品が提供できる。
さらに、巻線部周辺に絶縁カバーの開口部３３，３４，７３，７４があるため、放熱性向上する。 With this configuration, even when a large current is passed, it is possible to reduce the size in the projected area direction compared to a planar transformer that uses a multilayer printed circuit board, and to provide an electromagnetic component that expands the heat dissipation area of the winding itself. it can.
Moreover, since copper wires are less expensive than planar transformers using bus bars, low-cost electromagnetic components can be provided.
Furthermore, since there are openings 33, 34, 73, 74 of the insulating cover around the winding part, heat dissipation is improved.

上側絶縁カバー３は、その上面（下側絶縁カバー７と反対側の面）に一対の上側磁性体位置決め板３１，３２を有し、下側絶縁カバー７はその下面（上側絶縁カバー３と反対側の面）に一対の下側磁性体位置決め板７１，７２を有している。
上側磁性体位置決め板３１，３２は、互いに平行をなして延在し、それぞれ、上側絶縁カバー３に取り付けられている。また、上側磁性体位置決め板３１，３２は、何れも非磁性体であり、例えば樹脂の成型加工品である。Ｅ型磁性体２は、上側磁性体位置決め板３１，３２間に配設され、上側磁性体位置決め板３１，３２によって上側磁性体位置決め板３１，３２方向に動かないように位置決めされている。
下側磁性体位置決め板７１，７２は、互いに平行をなして延在し、それぞれ、下側絶縁カバー７に取り付けられている。また、下側磁性体位置決め板７１，７２は、何れも非磁性体であり、例えば樹脂の成型加工品である。Ｅ型磁性体２およびＩ型磁性体８は、下側磁性体位置決め板７１，７２間に配設され、下側磁性体位置決め板７１，７２によって下側磁性体位置決め板７１，７２方向に動かないように位置決めされている。 The upper insulating cover 3 has a pair of upper magnetic body positioning plates 31 and 32 on its upper surface (surface opposite to the lower insulating cover 7), and the lower insulating cover 7 has its lower surface (opposite to the upper insulating cover 3). A pair of lower magnetic body positioning plates 71 and 72 on the side surface).
The upper magnetic body positioning plates 31 and 32 extend in parallel with each other and are respectively attached to the upper insulating cover 3. Further, the upper magnetic body positioning plates 31 and 32 are both non-magnetic bodies, for example, resin molded products. The E-type magnetic body 2 is disposed between the upper magnetic body positioning plates 31 and 32 and is positioned by the upper magnetic body positioning plates 31 and 32 so as not to move in the direction of the upper magnetic body positioning plates 31 and 32.
The lower magnetic body positioning plates 71 and 72 extend in parallel to each other and are attached to the lower insulating cover 7 respectively. Further, the lower magnetic body positioning plates 71 and 72 are both non-magnetic bodies, for example, resin molded products. The E-type magnetic body 2 and the I-type magnetic body 8 are disposed between the lower magnetic body positioning plates 71 and 72, and are moved in the direction of the lower magnetic body positioning plates 71 and 72 by the lower magnetic body positioning plates 71 and 72. There is no positioning.

上側磁性体位置決め板３１，３２および下側磁性体位置決め板７１，７２は、それらの延在方向の長さが、Ｅ型磁性体２の両端脚部を含む長さ、すなわちＩ型磁性体８の長さより長く構成されており、それらの長手方向の各端部は、図示のように、Ｅ型磁性体２およびＩ型磁性体８の長手方向の端面より外側に延在している。同様に、上側磁性体位置決め板３１，３２および下側磁性体位置決め板７１，７２のそれぞれの長手方向の各端部は、図示のように、上側絶縁カバー３および下側絶縁カバー７の、上側磁性体位置決め板３１，３２および下側磁性体位置決め板７１，７２のそれぞれの長手方向の各端面より外側に延在している。 The upper magnetic body positioning plates 31 and 32 and the lower magnetic body positioning plates 71 and 72 have a length in the extending direction including the both end legs of the E-type magnetic body 2, that is, the I-type magnetic body 8. These end portions in the longitudinal direction extend outward from the end surfaces in the longitudinal direction of the E-type magnetic body 2 and the I-type magnetic body 8 as shown in the drawing. Similarly, the longitudinal end portions of the upper magnetic body positioning plates 31 and 32 and the lower magnetic body positioning plates 71 and 72 are on the upper side of the upper insulating cover 3 and the lower insulating cover 7 as shown in the figure. The magnetic body positioning plates 31, 32 and the lower magnetic body positioning plates 71, 72 extend outward from the respective end surfaces in the longitudinal direction.

前述のように、また図示のように、本実施の形態１は、渦巻き状に各々１層で巻かれ平板状に形成される１次巻線４と２次巻線６に合わせて、中央に穴の開いた平板形状の上側絶縁カバー３、絶縁板からなる平面状絶縁部材５、下側絶縁カバー７を積層し、１次巻線４、２次巻線６、平面状絶縁部材５、上側絶縁カバー３、下側絶縁カバー７に設けた中央の穴と、側面を通過して、閉磁路を形成する磁性体２，８で構成された電磁部品であって、１次巻線４、２次巻線６はいずれも丸線で構成され、１次巻線４、２次巻線６間に設けた平面状絶縁部材５と、１次巻線４、２次巻線６、磁性体２，８の各々の絶縁距離を保つとともに、各々を保持する上側絶縁カバー３と下側絶縁カバー７を有し、上側絶縁カバー３、下側絶縁カバー７に開口部を設けて、１次巻線４、２次巻線６を露出させ、１次巻線４、２次巻線６を電磁部品以外の他の部品に接続するために、巻線の内周、又は外周から１次巻線４の１次巻線端子４ａ、２次巻線６の２次巻線端子６ａを立ち上げた構造の電磁部品１である。 As described above and as shown in the figure, the first embodiment is arranged in the center in accordance with the primary winding 4 and the secondary winding 6 which are spirally wound in one layer and formed in a flat plate shape. A flat plate-shaped upper insulating cover 3 having a hole, a planar insulating member 5 made of an insulating plate, and a lower insulating cover 7 are laminated to form a primary winding 4, a secondary winding 6, a planar insulating member 5, and an upper side. An electromagnetic component comprising a central hole provided in the insulating cover 3 and the lower insulating cover 7 and magnetic bodies 2 and 8 that pass through the side surface and form a closed magnetic circuit, and the primary windings 4 and 2 Each of the secondary windings 6 is formed of a round wire, and includes a planar insulating member 5 provided between the primary winding 4 and the secondary winding 6, the primary winding 4, the secondary winding 6, and the magnetic body 2. , 8, and an upper insulating cover 3 and a lower insulating cover 7 that hold the respective insulating distances, and openings in the upper insulating cover 3 and the lower insulating cover 7. In order to expose the primary winding 4 and the secondary winding 6 and connect the primary winding 4 and the secondary winding 6 to other parts other than the electromagnetic parts, The electromagnetic component 1 has a structure in which the primary winding terminal 4a of the primary winding 4 and the secondary winding terminal 6a of the secondary winding 6 are raised from the outer periphery.

また、本実施の形態１は、磁性体２，８を介して電磁結合される１次巻線４と２次巻線６とを有する電磁部品において、１次巻線４および２次巻線６はいずれも、丸線が渦巻き状に１層で巻かれた平板状の巻線であり、１次巻線４と磁性体２とを絶縁し１次巻線４を露出させる開口部３３，３４を有する第１の絶縁カバー３と、２次巻線６と磁性体２，８とを絶縁し２次巻線６を露出させる開口部７３，７４を有する第２の絶縁カバー７と、１次巻線４と２次巻線６との間に介在し１次巻線４と２次巻線６とを絶縁する平面状絶縁部材５とを備え、１次巻線４の１次巻線端子４ａと２次巻線６の２次巻線端子６ａとが同じ側（上側）に立ち上げられている構造の電磁部品１である。 Further, in the first embodiment, in the electromagnetic component having the primary winding 4 and the secondary winding 6 that are electromagnetically coupled via the magnetic bodies 2 and 8, the primary winding 4 and the secondary winding 6 are used. These are flat-plate windings in which a round wire is wound in a single layer, and openings 33 and 34 that insulate the primary winding 4 from the magnetic body 2 and expose the primary winding 4. A first insulating cover 3 having a first insulating cover 3, a second insulating cover 7 having openings 73 and 74 that insulate the secondary winding 6 from the magnetic bodies 2 and 8 and expose the secondary winding 6, and the primary A primary insulation terminal 5 of the primary winding 4 is provided with a planar insulating member 5 interposed between the winding 4 and the secondary winding 6 to insulate the primary winding 4 and the secondary winding 6. The electromagnetic component 1 has a structure in which the 4a and the secondary winding terminal 6a of the secondary winding 6 are raised on the same side (upper side).

実施の形態２．
図４は、本発明の実施の形態２の電磁部品の絶縁シートの図である。実施の形態１の構成において、絶縁板５を、中央孔１００を有する絶縁シート１０とし、その他は実施の形態１の構成と同様である。
このような構成にすることによって、１次巻線４と２次巻線６との間隔が、実施の形態１の板厚の厚い構成の絶縁板５を使用する場合に比べて狭くなり、絶縁を確保したまま熱抵抗の低下を実現でき、放熱性が向上する。 Embodiment 2. FIG.
FIG. 4 is a diagram of an insulating sheet for an electromagnetic component according to Embodiment 2 of the present invention. In the configuration of the first embodiment, the insulating plate 5 is the insulating sheet 10 having the central hole 100, and the rest is the same as the configuration of the first embodiment.
By adopting such a configuration, the distance between the primary winding 4 and the secondary winding 6 becomes narrower than that in the case of using the insulating plate 5 having a thick plate thickness according to the first embodiment, and the insulation is reduced. The thermal resistance can be lowered while ensuring the heat dissipation, and the heat dissipation is improved.

実施の形態３．
図５は、本発明の実施の形態３の電磁部品の絶縁シート１１の図であり、図６は本発明の実施の形態３の電磁部品の断面図である。なお、図６は中央孔３０，４０，５０，６０，７０以外の部分での断面図である。本実施の形態３は、実施の形態２の構成における絶縁シート１０を、対応する辺に折り曲げ部１１１，１１２を有する折り曲げ絶縁シート１１としたものである。
また、１次巻線４と２次巻線端子６ａとの間に、前記絶縁シートの一部である折り曲げ部１１２が介在し、１次巻線４と２次巻線端子６ａとの絶縁が十分に確保されている。
１次巻線４の端子４ａと２次巻線６の端子６ａとの間に、折り曲げ絶縁シート１１を配置することにより実施の形態２の絶縁シート１０に比べて投影面積が縮小し、しかも絶縁が十分に確保される。その他は実施の形態２の構成と同様である。
このような構成にすることによって、電磁部品の投影面積が縮小し、小型化が可能となる。 Embodiment 3 FIG.
FIG. 5 is a diagram of the insulating sheet 11 of the electromagnetic component according to the third embodiment of the present invention, and FIG. 6 is a cross-sectional view of the electromagnetic component according to the third embodiment of the present invention. 6 is a cross-sectional view of a portion other than the central holes 30, 40, 50, 60, 70. In the third embodiment, the insulating sheet 10 in the configuration of the second embodiment is a folded insulating sheet 11 having bent portions 111 and 112 on the corresponding sides.
Further, a bent portion 112, which is a part of the insulating sheet, is interposed between the primary winding 4 and the secondary winding terminal 6a so that the insulation between the primary winding 4 and the secondary winding terminal 6a is achieved. Sufficiently secured.
By disposing the bent insulating sheet 11 between the terminal 4a of the primary winding 4 and the terminal 6a of the secondary winding 6, the projected area is reduced as compared with the insulating sheet 10 of the second embodiment, and insulation is achieved. Is sufficiently secured. The rest is the same as the configuration of the second embodiment.
With such a configuration, the projected area of the electromagnetic component is reduced, and the size can be reduced.

実施の形態４．
図７は、本発明の実施の形態４の電磁部品の１次巻線４と２次巻線６の図である。
その他は実施の形態３の構成と同様である。
１次巻線４および２次巻線６の各々を束ねるテープ９の位置が、投影方向に重ねた時に、即ち、平面方向に見た時に、一致しない場所としてある。
このような構成とすることにより、１次巻線４および２次巻線６の各々を束ねるテープ９の位置が、投影方向に重ねた時に、即ち、平面方向に見た時に、一致する場所とした場合に比べて、１次巻線４と２次巻線６と絶縁シート１１と１次巻線４のテープ９４と２次巻線６のテープ９６との合計厚さが薄くなる。 Embodiment 4 FIG.
FIG. 7 is a diagram of the primary winding 4 and the secondary winding 6 of the electromagnetic component according to the fourth embodiment of the present invention.
The rest is the same as the configuration of the third embodiment.
The position of the tape 9 that binds each of the primary winding 4 and the secondary winding 6 is a place that does not match when overlapped in the projection direction, that is, when viewed in the plane direction.
With such a configuration, the position of the tape 9 that binds each of the primary winding 4 and the secondary winding 6 coincides with a position that coincides when overlapped in the projection direction, that is, when viewed in the plane direction. Compared to the case, the total thickness of the primary winding 4, the secondary winding 6, the insulating sheet 11, the tape 94 of the primary winding 4, and the tape 96 of the secondary winding 6 is reduced.

つまり、１次巻線４および２次巻線６の各々を束ねるテープ９の位置が、投影方向に重ねた時に、即ち、平面方向に見た時に、一致する場所とした場合、１次巻線４と２次巻線６と絶縁シート１１と１次巻線４のテープ９４と２次巻線６のテープ９６との合計厚さは、「１次巻線４の厚さ＋２次巻線６の厚さ＋絶縁シート１１の厚さ＋１次巻線４のテープ９４の厚さ＋２次巻線６のテープ９６の厚さ」となる。 That is, when the position of the tape 9 that binds each of the primary winding 4 and the secondary winding 6 overlaps in the projection direction, that is, when viewed in the planar direction, the primary winding 4 4, the secondary winding 6, the insulating sheet 11, the tape 94 of the primary winding 4, and the tape 96 of the secondary winding 6 are “the thickness of the primary winding 4 + the secondary winding 6. The thickness of the insulating sheet 11 + the thickness of the tape 94 of the primary winding 4 + the thickness of the tape 96 of the secondary winding 6 ”.

これに対し、本実施の形態４のように、１次巻線４および２次巻線６の各々を束ねるテープ９の位置が、投影方向に重ねた時に、即ち、平面方向に見た時に、一致しない場所とした場合は、合計厚さは、「１次巻線４の厚さ＋２次巻線６の厚さ＋絶縁シート１１の厚さ＋１次巻線４のテープ９４の厚さまたは２次巻線６のテープ９６の厚さ」となり、１次巻線４のテープ９４の厚さまたは２次巻線６のテープ９６の厚さ分だけ薄くなり、厚さ方向の小型化になると共に、１次巻線４と２次巻線６との間隔もさらに狭くなり、絶縁を確保したまま熱抵抗の低下を実現でき、放熱性をさらに向上できる。 On the other hand, as in the fourth embodiment, when the position of the tape 9 that bundles each of the primary winding 4 and the secondary winding 6 is overlapped in the projection direction, that is, when viewed in the plane direction, When the locations do not match, the total thickness is “the thickness of the primary winding 4 + the thickness of the secondary winding 6 + the thickness of the insulating sheet 11 + the thickness of the tape 94 of the primary winding 4 or 2 The thickness of the tape 96 of the secondary winding 6 ”is reduced, and the thickness of the tape 94 of the primary winding 4 or the thickness of the tape 96 of the secondary winding 6 is reduced. The distance between the primary winding 4 and the secondary winding 6 is further narrowed, and a reduction in thermal resistance can be realized while ensuring insulation, and heat dissipation can be further improved.

実施の形態５．
図８は、本発明の実施の形態５の電磁部品の表側の斜視図である。図９は、本発明の実施の形態５の電磁部品の裏側の斜視図である。図８および図９に例示のように、上側絶縁カバー３の開口部３３，３４の平面方向に見た面積が、下側絶縁カバー７の開口部７３，７４の平面方向に見た面積より広くなっている。その他は実施の形態４の構成と同様である。
このような構成により、１次巻線４の方が、２次巻線６より、１次巻線４および２次巻線６を実装するケース（図１４のケース１３を参照）の壁面までの距離が大きいが、上側絶縁カバー３の開口部３３，３４の平面方向に見た面積が、下側絶縁カバー７の開口部７３，７４の平面方向に見た面積より広くなっているので１次巻線４の、電磁部品が実装されるケースに注入される放熱部材との接触面積が拡大し、１次巻線４の放熱性能が向上する。 Embodiment 5. FIG.
FIG. 8 is a front perspective view of the electromagnetic component according to the fifth embodiment of the present invention. FIG. 9 is a perspective view of the back side of the electromagnetic component according to the fifth embodiment of the present invention. As illustrated in FIGS. 8 and 9, the area viewed in the plane direction of the openings 33 and 34 of the upper insulating cover 3 is wider than the area viewed in the plane direction of the openings 73 and 74 of the lower insulating cover 7. It has become. The rest is the same as the configuration of the fourth embodiment.
With such a configuration, the primary winding 4 extends from the secondary winding 6 to the wall surface of the case (see the case 13 in FIG. 14) in which the primary winding 4 and the secondary winding 6 are mounted. Although the distance is large, the area seen in the plane direction of the openings 33 and 34 of the upper insulating cover 3 is larger than the area seen in the plane direction of the openings 73 and 74 of the lower insulating cover 7, so the primary. The contact area between the winding 4 and the heat dissipating member injected into the case where the electromagnetic component is mounted is increased, and the heat dissipating performance of the primary winding 4 is improved.

実施の形態６．
図１０は、本発明の実施の形態６の電磁部品の上側絶縁カバーと２次巻線との配置、大きさの関係を下面側から見た図である。上側絶縁カバー３と下側絶縁カバー７の各々の平面方向に見た形状寸法は、Ｅ型磁性体２と１次巻線４、２次巻線６、Ｉ型磁性体８のばらつき寸法を加えた値以上に対応した大きさとなっている。つまり、第１の絶縁カバー３および第２の絶縁カバー７の各々の平面方向に見た縦横の寸法は、磁性体２，８ばらつき寸法と１次巻線４のばらつき寸法と２次巻線６のばらつき寸法を加えた値以上に対応した大きさとしてある。その他は実施の形態５の構成と同様である。
このような構成により、ばらつき寸法が大きいＥ型磁性体、１次巻線、２次巻線、Ｉ型磁性体を使用した電磁部品の歩留まりを向上できる。 Embodiment 6 FIG.
FIG. 10 is a view of the arrangement and size relationship between the upper insulating cover and the secondary winding of the electromagnetic component according to the sixth embodiment of the present invention as viewed from the lower surface side. The shape dimensions of each of the upper insulating cover 3 and the lower insulating cover 7 as viewed in the plane direction are obtained by adding variations of the E-type magnetic body 2, the primary winding 4, the secondary winding 6, and the I-type magnetic body 8. It is the size corresponding to the above value. That is, the vertical and horizontal dimensions of each of the first insulating cover 3 and the second insulating cover 7 when viewed in the planar direction are the magnetic body 2 and 8 variation dimensions, the primary winding 4 variation dimension, and the secondary winding 6. It is a size corresponding to more than a value obtained by adding the variation dimension of. The rest is the same as the configuration of the fifth embodiment.
With such a configuration, it is possible to improve the yield of electromagnetic parts using an E-type magnetic body, a primary winding, a secondary winding, and an I-type magnetic body having a large variation dimension.

実施の形態７．
図１１は、本発明の実施の形態７の電磁部品の２次巻線の平面図である。１次巻線４と２次巻線６の寸法基準は、各巻線４，６のそれぞれの渦巻き形状の内側を、対応する絶縁カバー３，７の中央孔３０，７０の周縁に沿わせて巻いて構成されている。その他は実施の形態１から６の構成と同様である。
このような構成により、１次巻線４、２次巻線６の内側寸法（中央孔３０，６０の縦方向および横方向の寸法）が安定し、従って有効磁界が安定し（漏れ磁界が抑制され）、電磁部品機能の向上を図れ、電磁部品間の特性のバラつきの抑制が可能となる。 Embodiment 7 FIG.
FIG. 11 is a plan view of the secondary winding of the electromagnetic component according to the seventh embodiment of the present invention. The dimensions of the primary winding 4 and the secondary winding 6 are determined by winding the inner sides of the spiral shapes of the windings 4 and 6 along the peripheral edges of the central holes 30 and 70 of the corresponding insulating covers 3 and 7. Configured. The other configuration is the same as that of the first to sixth embodiments.
With such a configuration, the inner dimensions of the primary winding 4 and the secondary winding 6 (the vertical and horizontal dimensions of the center holes 30 and 60) are stabilized, and therefore the effective magnetic field is stabilized (leakage magnetic field is suppressed). Therefore, the function of the electromagnetic component can be improved, and the variation in characteristics between the electromagnetic components can be suppressed.

実施の形態８．
図１２は、本発明の実施の形態８の電磁部品の斜視図である。図１３は、図１２の電磁部品の一部分解図である。図１４は、図１２の電磁部品の断面図である。本実施の形態８は、Ｅ型磁性体２の上面に磁性体放熱プレート１２を取付けた事例である。
磁性体放熱プレート１２の形状はコの字型である。コの字型磁性体放熱プレート１２の長方形状の中央部１２１はＥ型磁性体２の上面（脚が無い方の面）に面接触し、Ｌ字状に屈曲した両端の両端放熱部１２２，１２３は、図１４に例示のように、Ｅ型磁性体２およびＩ型磁性体８の端面から所定間隔Ｇだけ離間しており、この離間により両端放熱部１２２，１２３の放熱面積が広くなり放熱効果が向上する。その他は実施の形態１から７の構成と同様である。 Embodiment 8 FIG.
FIG. 12 is a perspective view of an electromagnetic component according to the eighth embodiment of the present invention. 13 is a partially exploded view of the electromagnetic component shown in FIG. 14 is a cross-sectional view of the electromagnetic component of FIG. The eighth embodiment is an example in which a magnetic heat dissipation plate 12 is attached to the upper surface of the E-type magnetic body 2.
The shape of the magnetic body heat dissipation plate 12 is a U-shape. The rectangular central portion 121 of the U-shaped magnetic body heat radiation plate 12 is in surface contact with the upper surface (the surface without the legs) of the E-type magnetic body 2 and both end heat radiation portions 122 bent at L-shapes. As illustrated in FIG. 14, 123 is spaced from the end surfaces of the E-type magnetic body 2 and the I-type magnetic body 8 by a predetermined distance G, and this separation increases the heat radiation area of both end heat radiation portions 122 and 123. The effect is improved. Others are the same as the configurations of the first to seventh embodiments.

このような構成により、Ｅ型磁性体２の発熱は、コの字型磁性体放熱プレート１２の中央部１２１上面と両端放熱部１２２，１２３２か所、計３箇所から熱拡散し、放熱性が向上する。
また、上側磁性体位置決め板３１，３２および下側磁性体位置決め板７１，７２に熱伝導性のよい部材で構成し、さらに、ケース１３内に、絶縁性および非磁性の例えば液状の放熱部材１４を充填する構成とすれば、Ｅ型磁性体２、Ｉ型磁性体８の放熱効果は更に向上する。
なお、図１４は図１２のＢ−Ｂ線における断面を矢印の方向に見た断面図であるが、本実施の形態８のコの字型磁性体放熱プレート１２を例示する図であるので、簡潔表示のため、Ｅ型磁性体２、Ｉ型磁性体８、１次巻線４、２次巻線６、上側絶縁カバー３、および下側絶縁カバー７については断面表示とせずに一個のブロック表示としてある。 With such a configuration, the heat generated by the E-type magnetic body 2 is diffused from a total of three locations: the upper surface of the central portion 121 of the U-shaped magnetic body heat-radiating plate 12 and the heat-radiating portions 122 and 1232 at both ends. improves.
Further, the upper magnetic body positioning plates 31 and 32 and the lower magnetic body positioning plates 71 and 72 are made of members having good thermal conductivity, and further, insulative and nonmagnetic, for example, a liquid heat radiating member 14 in the case 13. If the structure is filled, the heat dissipation effect of the E-type magnetic body 2 and the I-type magnetic body 8 is further improved.
14 is a cross-sectional view of the cross section taken along the line BB in FIG. 12 in the direction of the arrow, but is a diagram illustrating the U-shaped magnetic body heat dissipation plate 12 of the eighth embodiment. For the sake of brevity, the E-type magnetic body 2, the I-type magnetic body 8, the primary winding 4, the secondary winding 6, the upper insulating cover 3, and the lower insulating cover 7 are not shown in cross section, but a single block. It is as a display.

実施の形態９．
実施の形態８ではＥ型磁性体２と磁性体放熱プレート１２の間を放熱部材１４でＥ型磁性体２の発熱を磁性体放熱プレート１２に伝える事例も例示していたが、本実施の形態９では、Ｅ型磁性体２と磁性体放熱プレート１２の間を放熱性塗布剤で密着した事例であり、電磁部品を実装するケース１３内に充填される放熱部材１４の量は、Ｅ型磁性体２の上面が可視できるまでの量とした構成となっている。その他は実施の形態１から８の構成と同様である。
このような構成により、実施の形態８よりもＥ型磁性体２と磁性体放熱プレート１２との間の熱移動が向上し、放熱性が向上する。また、実施の形態８の放熱部材１４の減量による低コスト化、電磁部品周辺の空間ができるため、電磁部品以外のほかの部品の配置範囲が拡大し、装置全体の小型化にもつながる。 Embodiment 9 FIG.
In the eighth embodiment, the example in which the heat dissipation member 14 transmits heat generated by the E-type magnetic body 2 to the magnetic body heat radiating plate 12 between the E type magnetic body 2 and the magnetic body heat radiating plate 12 is illustrated. 9 shows an example in which the E-type magnetic body 2 and the magnetic material heat-dissipating plate 12 are in close contact with each other with a heat-dissipating coating agent. The amount of the heat-dissipating member 14 filled in the case 13 on which the electromagnetic component is mounted is The amount of the body 2 is such that the upper surface is visible. The other configuration is the same as that of the first to eighth embodiments.
With such a configuration, heat transfer between the E-type magnetic body 2 and the magnetic body heat radiating plate 12 is improved as compared with the eighth embodiment, and heat dissipation is improved. Further, since the cost can be reduced by reducing the amount of the heat dissipating member 14 according to the eighth embodiment and a space around the electromagnetic parts can be formed, the arrangement range of other parts other than the electromagnetic parts can be expanded and the entire apparatus can be downsized.

実施の形態１０．
図１５は、本発明の実施の形態１０の電磁部品の斜視図である。図１６は、図１５の電磁部品の一部分解図である。図１７は、図１５のＣ−Ｃ線において一部を断面にしてＣ方向にみた電磁部品の一部断面の側面図である。本実施の形態１０は、１次巻線４の端子側上面に、開口部３４を覆うように放熱シート１５３を取り付け、その上に端子側の平面巻線放熱プレート１５を取付け、１次巻線４の端子がない側の上面に、開口部３３を覆うように放熱シート１６３を取り付け、その上に非端子側の平面巻線放熱プレート１６を取付けた事例である。
平面巻線放熱プレート１５，１６の形状は、巻線４，６及び絶縁カバー３，７の側面に、両端の脚部が任意の間隔を隔てたコの字型に構成されている。その他は実施の形態１から８の構成と同様である。 Embodiment 10 FIG.
FIG. 15 is a perspective view of an electromagnetic component according to Embodiment 10 of the present invention. FIG. 16 is a partially exploded view of the electromagnetic component of FIG. FIG. 17 is a side view of a partial cross section of the electromagnetic component as viewed in the C direction with a partial cross section taken along line CC in FIG. In the tenth embodiment, a heat radiating sheet 153 is attached to the upper surface of the primary winding 4 on the terminal side so as to cover the opening 34, and a flat winding heat radiating plate 15 on the terminal side is mounted thereon, and then the primary winding is mounted. This is an example in which a heat radiating sheet 163 is attached to the upper surface on the side having no terminal 4 so as to cover the opening 33, and the planar winding heat radiating plate 16 on the non-terminal side is attached thereon.
The shape of the planar winding heat dissipation plates 15 and 16 is formed in a U shape on the side surfaces of the windings 4 and 6 and the insulating covers 3 and 7 with leg portions at both ends spaced apart from each other. The other configuration is the same as that of the first to eighth embodiments.

このような構成により、例えば１次巻線４の上面と側面２か所、計３箇所から１次巻線４の発熱が巻線放熱プレートに熱拡散し、１次巻線４の放熱性が向上する。
本実施の形態１０においても、実施の形態８と同様に、上側磁性体位置決め板３１，３２および下側磁性体位置決め板７１，７２に熱伝導性のよい部材で構成し、さらに、ケース１３内に、絶縁性および非磁性の例えば液状の放熱部材１４を充填する構成とすれば、Ｅ型磁性体２、Ｉ型磁性体８の放熱効果は更に向上する。
なお、放熱シート１５３，１６３を使用することにより、平面巻線放熱プレート１５，１６、放熱シート１５３，１６３、１次巻線４間に隙間ができる可能性があるが、流動性のある例えば液体状の放熱部材で前記隙間を埋めるようにすれば当該隙間がなくなり、より高い放熱効果とすることができる。 With such a configuration, for example, the heat generated in the primary winding 4 is diffused into the winding heat radiating plate from a total of three locations on the upper surface and the side surface of the primary winding 4, and the heat dissipation of the primary winding 4 is improved. improves.
Also in the tenth embodiment, similarly to the eighth embodiment, the upper magnetic body positioning plates 31 and 32 and the lower magnetic body positioning plates 71 and 72 are made of members having good thermal conductivity, and further, In addition, if the insulating and nonmagnetic, for example, liquid heat radiation member 14 is filled, the heat radiation effect of the E-type magnetic body 2 and the I-type magnetic body 8 is further improved.
In addition, by using the heat radiation sheets 153 and 163, there is a possibility that a gap is formed between the planar winding heat radiation plates 15 and 16, the heat radiation sheets 153 and 163, and the primary winding 4. If the gap is filled with a heat radiating member, the gap is eliminated and a higher heat dissipation effect can be obtained.

実施の形態１１．
実施の形態１０では１次巻線４と巻線放熱プレートの間を放熱部材１４で１次巻線４の発熱を巻線放熱プレート１５，１６に伝えることも例示したが、本実施の形態１１では、１次巻線４と巻線放熱プレート１５，１６の間を放熱性塗布剤で密着した事例であり、電磁部品を実装するケース１３内に充填される放熱部材の量は、１次巻線の上面が可視できるまでの量とした構成となっている。その他は実施の形態１０の構成と同様である。
このような構成により、実施の形態１０よりも、１次巻線４と巻線放熱プレート１５，１６との間の熱移動が向上し、放熱性が向上する。また、実施の形態１０の放熱部材１４の減量による低コスト化、電磁部品周辺の空間ができるため、電磁部品以外のほかの部品の配置範囲が拡大し、装置全体の小型化にもつながる。 Embodiment 11 FIG.
In the tenth embodiment, the heat dissipation of the primary winding 4 is transmitted to the winding heat dissipation plates 15 and 16 by the heat dissipation member 14 between the primary winding 4 and the winding heat dissipation plate. In this case, the primary winding 4 and the winding heat radiation plates 15 and 16 are closely adhered with a heat-dissipating coating agent, and the amount of the heat radiation member filled in the case 13 for mounting the electromagnetic component is the primary winding. The amount of the line is such that the upper surface of the line is visible. The rest is the same as the configuration of the tenth embodiment.
With such a configuration, heat transfer between the primary winding 4 and the winding heat radiation plates 15 and 16 is improved and heat dissipation is improved as compared with the tenth embodiment. Further, since the cost can be reduced by reducing the amount of the heat radiation member 14 according to the tenth embodiment and a space around the electromagnetic component can be formed, the arrangement range of other components other than the electromagnetic component is expanded, which leads to miniaturization of the entire apparatus.

実施の形態１２．
図１８は、本発明の実施の形態１２の電磁部品の断面図である。１次巻線４の上面にある端子３ａ，６ａ側の平面巻線放熱プレート１５および、１次巻線４の端子３ａ，６ａが無い側の上面にある非端子側の平面巻線放熱プレート１６は、いずれもその形状が長方形であって、各辺に折り曲げ部が形成され、相対向する対をなす平行な第１の折り曲げ部１５２，１６２の折り曲げ方向が上側であり、残りの相対向する対をなす平行な第２の折り曲げ部１５１，１６１の折り曲げ方向が下側であり、前記第２の折り曲げ部の先端部が前記第１の絶縁カバーの側面を覆っている。折り曲げ部１５１，１６１，１５２，１６２は、電磁部品を実装するケース１３の側面と平行な面を構成している。また、折り曲げ部１５２，１６２は、１次巻線４および２次巻線６より高い位置に配設されている。その他は実施の形態１から１１の構成と同様である。
このような構成により、放熱面積拡大による放熱性向上、平面巻線放熱プレート１５，１６の剛性向上、平面巻線放熱プレート１５，１６を取付ける際の持ち手になり、組立性が向上する。 Embodiment 12 FIG.
FIG. 18 is a cross-sectional view of the electromagnetic component according to Embodiment 12 of the present invention. The flat winding heat dissipation plate 15 on the side of the terminals 3a, 6a on the upper surface of the primary winding 4 and the flat winding heat dissipation plate 16 on the non-terminal side on the upper surface of the primary winding 4 on the side where the terminals 3a, 6a are not present. Each of them has a rectangular shape, a bent portion is formed on each side, and the parallel first pair of bent portions 152, 162 are in an upward direction, and the remaining opposing surfaces are opposed to each other. The bending direction of the pair of parallel second bent portions 151 and 161 is the lower side, and the tip end portion of the second bent portion covers the side surface of the first insulating cover. The bent portions 151, 161, 152, 162 constitute a surface parallel to the side surface of the case 13 on which the electromagnetic component is mounted. The bent portions 152 and 162 are disposed at a position higher than the primary winding 4 and the secondary winding 6. Other configurations are the same as those in the first to eleventh embodiments.
With such a configuration, heat dissipation is improved by expanding the heat dissipation area, the rigidity of the flat-winding heat dissipation plates 15 and 16 is improved, and a handle for attaching the flat-winding heat dissipation plates 15 and 16 is attached, thereby improving assemblability.

実施の形態１３．
図１９は、本発明の実施の形態１３の電磁部品の斜視図である。図２０は図１９におけるＤ部の拡大図である。本実施の形態１３は、下側絶縁ケース７に、１次巻線４の上面にある端子３ａ，６ａ側の巻線放熱プレート１５と、１次巻線４の端子３ａ，６ａがない側の上面にある非端子側の平面巻線放熱プレート１６を固定する嵌合構造を構成した事例である。
この嵌合構造は、下側絶縁ケース７に一体に植設され先端に嵌合突起７５ａが形成された弾性嵌合腕７５を設けた通称「スナップフィット」の構造であり、弾性嵌合腕７５の先端の嵌合突起７５ａが平面巻線放熱プレート１５，１６の上面（下側絶縁ケース７と反対側の面）に弾性的に嵌合することにより、下側絶縁ケース７に平面巻線放熱プレート１５，１６が固定される構造である。
このような構成により、巻線放熱プレート１５，１６の固定及び、巻線放熱プレート１５，１６と１次巻線４との間隔を一定にし、放熱性の安定化を実現することが可能となる。 Embodiment 13 FIG.
FIG. 19 is a perspective view of an electromagnetic component according to Embodiment 13 of the present invention. FIG. 20 is an enlarged view of a portion D in FIG. In the thirteenth embodiment, the lower insulating case 7 is provided on the side where the terminals 3a and 6a on the upper surface of the primary winding 4 and the terminals 3a and 6a of the primary winding 4 are not provided. This is an example in which a fitting structure for fixing the non-terminal side planar winding heat dissipation plate 16 on the upper surface is configured.
This fitting structure is a so-called “snap fit” structure in which an elastic fitting arm 75 having a fitting projection 75 a formed at the tip thereof is provided integrally with the lower insulating case 7. The fitting protrusion 75a at the tip of the flat plate is elastically fitted to the upper surfaces (surfaces opposite to the lower insulating case 7) of the planar winding heat radiation plates 15 and 16, so In this structure, the plates 15 and 16 are fixed.
With such a configuration, it is possible to stabilize the heat radiation performance by fixing the winding heat radiation plates 15 and 16 and keeping the distance between the coil heat radiation plates 15 and 16 and the primary winding 4 constant. .

実施の形態１４．
図２１は、本発明の実施の形態１４の電磁部品の斜視図である。電磁部品１を実装するケース１３の壁上面に、電磁部品の組み込み方向を規制する不揃いな切込み１７１を設けた樹脂枠１７を構成する。
このような構成とすることにより、電磁部品をケースに実装する際の位置決めや、組み込み方向を例えば１８０°間違えてそのまま組み込んでしまうような「通称“ポカ”」よけとなり、組立性向上となる。また、ケース１３の壁の上面に樹脂枠１７を取付けることにより、樹脂枠１７が絶縁カバーの役割を果たし、電磁部品周辺の空間が狭く出来るため、例えば、シールド板、基板、ケースのカバー、等の、電磁部品本体以外の部品の配置の範囲が拡大し、装置全体の小型化にもつながる。 Embodiment 14 FIG.
FIG. 21 is a perspective view of an electromagnetic component according to Embodiment 14 of the present invention. A resin frame 17 is provided in which an uneven cut 171 for restricting the mounting direction of the electromagnetic component is provided on the upper surface of the wall of the case 13 on which the electromagnetic component 1 is mounted.
By adopting such a configuration, positioning when mounting electromagnetic parts on the case, and “common” “poca” which is installed as it is with a wrong mounting direction, for example, 180 °, are prevented, and assemblability is improved. . Further, by attaching the resin frame 17 to the upper surface of the wall of the case 13, the resin frame 17 serves as an insulating cover, and the space around the electromagnetic component can be narrowed. For example, a shield plate, a substrate, a case cover, etc. The range of arrangement of components other than the electromagnetic component main body is expanded, leading to miniaturization of the entire apparatus.

実施の形態１５．
図２２は、本発明の実施の形態１４の電磁部品の斜視図である。本実施の形態１５は、図２２に例示のように、電磁部品の上側に板金１８を設け、ケースにねじで固定する構造にすることによって、電磁部品の発熱が電磁部品の上側に配置された電磁部品以外の部品に伝わることを防止する事例である。
例えば、電磁部品の上側に基板１９を配置し、電磁部品と基板１９上の車載ＤＣ/ＤＣコンバータ等の電力変換器であるの基板実装部品２０とを電気的に接続する構成において、基板の実装部品２０に電磁部品の発熱が伝わることを遮断し、電磁部品の発熱による基板実装部品２０の温度上昇による性能の劣化を抑制することが可能となる。 Embodiment 15 FIG.
FIG. 22 is a perspective view of the electromagnetic component according to Embodiment 14 of the present invention. In the fifteenth embodiment, as illustrated in FIG. 22, the heat generation of the electromagnetic component is arranged on the upper side of the electromagnetic component by providing a sheet metal 18 on the upper side of the electromagnetic component and fixing it to the case with a screw. This is an example of preventing transmission to parts other than electromagnetic parts.
For example, in the configuration in which the substrate 19 is disposed on the upper side of the electromagnetic component and the electromagnetic component and the substrate mounting component 20 which is a power converter such as an in-vehicle DC / DC converter on the substrate 19 are electrically connected, It is possible to block the heat generated by the electromagnetic component from being transmitted to the component 20, and to suppress the deterioration of performance due to the temperature rise of the board mounted component 20 due to the heat generated by the electromagnetic component.

なお、本発明は、その発明の範囲内において、各実施の形態を適宜、組み合わせ、変形、省略することができる。
なお、各図中、同一符号は同一または相当部分を示す。 In the present invention, the embodiments can be appropriately combined, modified, and omitted within the scope of the invention.
In addition, in each figure, the same code | symbol shows the same or equivalent part.

１電磁部品、２Ｅ型磁性体、３上側絶縁カバー（第１の絶縁カバー）、
３０中央孔、３１上側磁性体位置決め板、３２上側磁性体位置決め板、
３３開口部、３４開口部、３ａ端子位置決め穴、４１次巻線、
４０中央孔、４ａ１次巻線端子、５平面状絶縁部材、５０中央孔、
６２次巻線、６０中央孔、６ａ２次巻線端子、
７下側絶縁カバー（第２の絶縁カバー）、７０中央孔、
７１下側磁性体位置決め板、７２下側磁性体位置決め板、７３開口部、
７４開口部、７５弾性嵌合腕、７５ａ嵌合突起、８Ｉ型磁性体、
９４テープ、９６テープ、１０絶縁シート、１００中央孔、
１１折り曲げ絶縁シート、１１０中央孔、１１１折り曲げ部、
１１２折り曲げ部、１２磁性体放熱プレート、１２１中央部、
１２２両端放熱部、１２３両端放熱部、１３ケース、１４放熱部材、
１５端子側巻線放熱プレート、１５１，１６１第２の折り曲げ部、
１６平面巻線放熱プレート、１５２，１６２第１の折り曲げ部、１７樹脂枠、
１７１切込み１７１１８板金、１９基板、
２０基板実装部品（電力変換器）、Ｇ所定間隔 1 electromagnetic component, 2 E-type magnetic body, 3 upper insulating cover (first insulating cover),
30 center hole, 31 upper magnetic body positioning plate, 32 upper magnetic body positioning plate,
33 opening, 34 opening, 3a terminal positioning hole, 4 primary winding,
40 center hole, 4a primary winding terminal, 5 planar insulating member, 50 center hole,
6 secondary winding, 60 center hole, 6a secondary winding terminal,
7 Lower insulating cover (second insulating cover), 70 center hole,
71 lower magnetic body positioning plate, 72 lower magnetic body positioning plate, 73 opening,
74 opening, 75 elastic fitting arm, 75a fitting protrusion, 8 I-type magnetic body,
94 tape, 96 tape, 10 insulating sheet, 100 center hole,
11 bent insulating sheet, 110 central hole, 111 bent portion,
112 bent portion, 12 magnetic material heat radiation plate, 121 central portion,
122 both-end heat radiation part, 123 both-end heat radiation part, 13 case, 14 heat radiation member,
15 terminal side winding heat radiation plate, 151, 161 second bent portion,
16 plane winding heat dissipation plate, 152, 162 first bent portion, 17 resin frame,
171 Notch 171 18 Sheet metal, 19 Substrate,
20 Board mounted components (power converter), G Predetermined spacing

Claims

In an electromagnetic component having a primary winding and a secondary winding that are electromagnetically coupled via a magnetic body,
Each of the primary winding and the secondary winding is a flat winding in which a round wire is spirally wound in one layer,
A first insulating cover having an opening that insulates the primary winding from the magnetic body and exposes the primary winding;
A second insulating cover having an opening that insulates the secondary winding and the magnetic body and exposes the secondary winding;
A planar insulating member interposed between the primary winding and the secondary winding to insulate the primary winding and the secondary winding;
An electromagnetic component, wherein a primary winding terminal of the primary winding and a secondary winding terminal of the secondary winding are raised on the same side.

2. The electromagnetic component according to claim 1, wherein each of the primary winding, the secondary winding, the first insulating cover, the second insulating cover, and the planar insulating member has a central portion. A central hole in the primary winding, the secondary winding, the first insulating cover, the second insulating cover, and the planar insulating member. Electromagnetic parts characterized by having penetrated.

The electromagnetic component according to claim 2, wherein the planar insulating member is a plate material.

The electromagnetic component according to claim 2, wherein the planar insulating member is an insulating sheet.

The electromagnetic component according to claim 4, wherein a part of the insulating sheet is interposed between the primary winding and the secondary winding terminal.

2. The electromagnetic component according to claim 1, wherein both of the primary winding and the secondary winding are bundled with an insulating tape at a plurality of locations, and the position of the insulating tape in the primary winding and the secondary winding An electromagnetic component, wherein the position of the insulating tape of the winding does not overlap in the projection direction.

2. The electromagnetic component according to claim 1, wherein an area of the opening of the first insulating cover as viewed in a plane direction is wider than an area of the opening of the second insulating cover as viewed in a plane. Electromagnetic parts to be used.

8. The electromagnetic component according to claim 7, wherein the vertical and horizontal dimensions of each of the first insulating cover and the second insulating cover as viewed in the planar direction are a variation dimension of the magnetic material and a variation of the primary winding. An electromagnetic component characterized by having a size corresponding to at least a value obtained by adding a dimension and a variation dimension of the secondary winding.

3. The electromagnetic component according to claim 2, wherein the primary winding is wound with an inside of a spiral shape along a peripheral edge of the central hole of the first insulating cover, An electromagnetic component characterized in that the inside of a spiral shape is wound along the periphery of the central hole of the second insulating cover.

The electromagnetic component according to any one of claims 1 to 9,
A heat radiation member is provided between the case for mounting the electromagnetic component and the electromagnetic component.

The electromagnetic component according to claim 10, further comprising a magnetic heat dissipation plate that dissipates heat generated by the magnetic material, the magnetic heat dissipation plate having heat dissipation portions at both ends thereof, and the heat dissipation portion and an end surface of the magnetic material. Electromagnetic parts characterized by being spaced apart.

The electromagnetic component according to claim 11, wherein the magnetic body and the magnetic body heat dissipating plate are in close contact with a heat dissipating coating agent.

13. The electromagnetic component according to claim 12, further comprising a winding heat radiating plate that covers the opening of the first insulating cover and radiates heat from the primary winding.

The electromagnetic component according to claim 13, further comprising an insulating sheet interposed between the primary winding and the winding heat dissipation plate.

The electromagnetic component according to claim 13, wherein the primary winding and the winding heat dissipation plate are in close contact with a heat-dissipating coating agent.

14. The electromagnetic component according to claim 13, wherein the winding heat dissipating plate has a bent portion, and the bent portion is parallel to a side surface of a case on which the electromagnetic component is mounted. .

The electromagnetic component according to claim 16, wherein a bending direction of the bent portion of the winding heat dissipation plate is an upper side.

17. The electromagnetic component according to claim 16, wherein the winding heat dissipating plate has a rectangular shape and a bent portion is formed on each side, and a bending direction of parallel first bent portions forming a pair facing each other is set. The folding direction of the remaining parallel second folding portions that are the upper and opposite pairs is the lower side, and the tip of the second folding portion covers the side surface of the first insulating cover. Electromagnetic parts characterized by that.

The electromagnetic component according to any one of claims 13 to 18, wherein the second insulating cover fixes the winding heat dissipating plate.

The electromagnetic component according to any one of claims 1 to 19, wherein the electromagnetic component is mounted in a case, and a resin frame is provided on an upper surface of the wall of the case.