JP5381429B2 - Electromagnetic induction equipment - Google Patents

Electromagnetic induction equipment Download PDF

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JP5381429B2
JP5381429B2 JP2009162756A JP2009162756A JP5381429B2 JP 5381429 B2 JP5381429 B2 JP 5381429B2 JP 2009162756 A JP2009162756 A JP 2009162756A JP 2009162756 A JP2009162756 A JP 2009162756A JP 5381429 B2 JP5381429 B2 JP 5381429B2
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和明 三野
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Fuji Electric Co Ltd
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Description

本発明は、高周波トランスやリアクトル等の電磁誘導機器に係り、特に、コア内部に複数のコイルを積層して収容した構造に関する。   The present invention relates to an electromagnetic induction device such as a high-frequency transformer or a reactor, and more particularly to a structure in which a plurality of coils are stacked and accommodated inside a core.

近年、スイッチング電源をはじめとする電力変換装置では高周波化が進み、部品の小型化・低コスト化が図られている。
スイッチング電源には、高周波トランスやリアクトルなどの電磁誘導機器が組み込まれており、これら電磁誘導機器は、コア内部に複数のコイルを積層して収納することで小型軽量化を図っている。 In recent years, power converters such as switching power supplies have increased in frequency, and parts have been reduced in size and cost.
The switching power supply incorporates electromagnetic induction devices such as a high-frequency transformer and a reactor, and these electromagnetic induction devices are designed to be small and light by stacking and storing a plurality of coils inside the core.

図４は、一般的なトランスの結線図を示すものであり、このトランスは、一次コイル２と、互いに直列に接続した二次コイル３及び三次コイル４とを備えている。
図４のトランスの具体的な構造として、図５及び図６に示すものが知られている。
図５に示すトランス１は、一対のコア分割体５ａ，５ｂからなるコア５にリング状のコイル収容空間６が形成されており、このコイル収容空間６に、一次コイル２、表面が平坦な銅板（導電板）からなる１ターンに巻回した（以下、１ターン形状と称する）二次コイル３、銅板からなる１ターン形状の三次コイル４が互いに絶縁された状態で積層されている。 FIG. 4 shows a connection diagram of a general transformer, and this transformer includes a primary coil 2, and a secondary coil 3 and a tertiary coil 4 connected in series with each other.
As a specific structure of the transformer of FIG. 4, the structures shown in FIGS. 5 and 6 are known.
In the transformer 1 shown in FIG. 5, a ring-shaped coil housing space 6 is formed in a core 5 composed of a pair of core divided bodies 5 a and 5 b, and the primary coil 2 and a copper plate with a flat surface are formed in the coil housing space 6. A secondary coil 3 (hereinafter referred to as a one-turn shape) wound around one turn made of a (conductive plate) and a one-turn shaped tertiary coil 4 made of a copper plate are laminated in an insulated state.

一次コイル２は、互いに並列または直列接続された銅線（導電線）からなる第１の一次コイル２ａと第２の一次コイル２ｂとで構成されており、第１の一次コイル２ａは、銅線を放射方向に徐々に拡径しつつ複数に巻回した（以下、複数ターン形状と称する）コイル２ａ１，２ａ２が直列に接続され、第２の一次コイル２ｂも、銅線を複数ターン形状に配置したコイル２ｂ１，２ｂ２が直列に接続された構造とされている。   The primary coil 2 includes a first primary coil 2a and a second primary coil 2b made of copper wires (conductive wires) connected in parallel or in series with each other. The first primary coil 2a is a copper wire. Coils 2a1 and 2a2 wound in plural while gradually expanding the diameter in the radial direction (hereinafter referred to as a multi-turn shape) are connected in series, and the second primary coil 2b also has a copper wire arranged in a multi-turn shape. The coils 2b1 and 2b2 are connected in series.

そして、二次コイル３の上層に第１の一次コイル２ａが配置され、三次コイル４の下層に第２の一次コイル２ｂが配置され、各層のコイル間を絶縁する絶縁材７が、コイル収容空間６に充填されている。
また、図６に示すトランス１１は、表面が平坦な銅板からなる二次コイル３、三次コイル４を用いているとともに、銅線からなる第１の一次コイル２ａ及び第２の一次コイル２ｂを、コイル収容空間６に配置した絶縁体からなるボビン１３に複数ターン形状で巻回されたものであって、第１の一次コイル２ａ及び第２の一次コイル２ｂの巻回作業を容易にしたトランスである。 The first primary coil 2a is disposed on the upper layer of the secondary coil 3, the second primary coil 2b is disposed on the lower layer of the tertiary coil 4, and the insulating material 7 that insulates the coils of each layer is provided in the coil housing space. 6 is filled.
Further, the transformer 11 shown in FIG. 6 uses the secondary coil 3 and the tertiary coil 4 made of a copper plate having a flat surface, and the first primary coil 2a and the second primary coil 2b made of a copper wire, A transformer that is wound in a plurality of turns on a bobbin 13 made of an insulator disposed in a coil housing space 6 and that facilitates the winding work of the first primary coil 2a and the second primary coil 2b. is there.

しかし、図６のトランス１１は、二次コイル３及び三次コイル４に大電流が流れるが、ボビン１３を配置したことでコア５の窓枠（コイル収容空間６の横断面）面積に対する導電体の占有率が減少するので、銅損（電力損失）の低減化の面で問題がある。
これに対して、図５のトランス１は、コイル収容空間６にボビンが存在せず、導通損失が低減する銅板の二次コイル３及び三次コイル４を用いているので、コア５の窓枠面積に対する導電体の占有率が増加し、二次コイル３及び三次コイル４の抵抗値を下げて銅損を低減することができる。 However, in the transformer 11 shown in FIG. 6, a large current flows through the secondary coil 3 and the tertiary coil 4. Since the occupation ratio decreases, there is a problem in terms of reducing copper loss (power loss).
On the other hand, since the transformer 1 of FIG. 5 uses the secondary coil 3 and the tertiary coil 4 of the copper plate in which the bobbin does not exist in the coil housing space 6 and the conduction loss is reduced, the window frame area of the core 5 Thus, the occupation ratio of the conductor with respect to can be increased, and the resistance values of the secondary coil 3 and the tertiary coil 4 can be lowered to reduce the copper loss.

ところで、図５に示すトランス１は、二次コイル３及び三次コイル４に銅板を用いることで断面積が大きくなり低周波領域では抵抗値が低くなるが、高周波領域における銅板の抵抗値は、表皮効果（銅板表面の限られた範囲にしか電流が流れず、電流路の断面積が実効的に減少してしまう現象）によって低減させることが困難である。
そこで、図７に示すトランス１２のように、二次コイル３及び三次コイル４のそれぞれを複数層の銅板のコイル３ａ，３ｂ，３ｃ，４ａ，４ｂ，４ｃで構成すると、二次コイル３及び三次コイル４の表面積が増大し、高周波領域での表皮効果の影響を少なくし、抵抗値の低減を図ることができる。なお、銅板のコイル３ａ，３ｂ，３ｃは互いに並列接続され、銅板のコイル４ａ，４ｂ，４ｃも互いに並列接続されている。 Incidentally, the transformer 1 shown in FIG. 5 uses a copper plate for the secondary coil 3 and the tertiary coil 4 to increase the cross-sectional area and reduce the resistance value in the low frequency region. However, the resistance value of the copper plate in the high frequency region is It is difficult to reduce by the effect (a phenomenon in which current flows only in a limited range on the surface of the copper plate and the cross-sectional area of the current path is effectively reduced).
Therefore, as in the transformer 12 shown in FIG. 7, when each of the secondary coil 3 and the tertiary coil 4 is configured by a plurality of layers of copper plates 3 a, 3 b, 3 c, 4 a, 4 b, 4 c, the secondary coil 3 and the tertiary coil The surface area of the coil 4 is increased, the influence of the skin effect in the high frequency region is reduced, and the resistance value can be reduced. The copper plate coils 3a, 3b, 3c are connected in parallel to each other, and the copper plate coils 4a, 4b, 4c are also connected in parallel to each other.

また、例えば特許文献１に記載されているトランスは、コア内部に積層した一次コイル〜三次コイルの全てを表面が平坦な導電板で構成し、しかも、各コイルを複数のターン形状に配置している。これにより、一次コイル〜三次コイルの表面積が増大するので、高周波領域での表皮効果の影響を少なくし、抵抗値の低減を図ることができる。   Further, for example, in the transformer described in Patent Document 1, all of the primary coil to the tertiary coil laminated inside the core are configured by a conductive plate having a flat surface, and each coil is arranged in a plurality of turns. Yes. Thereby, since the surface areas of the primary coil to the tertiary coil are increased, the influence of the skin effect in the high frequency region can be reduced, and the resistance value can be reduced.

特開平５−２１２４４号公報JP-A-5-21244

しかし、図７に示すトランス１２は、複数層の銅板からなるコイル３ａ，３ｂ，３ｃ，４ａ，４ｂ，４ｃの間に絶縁材７が介在する絶縁スペースが必要となって絶縁スペースが増大するので、コア５の窓枠面積に対する導電体の占有率が低下し、銅損を効果的に低減することができない。同様に、特許文献１に記載されているトランスも、導電板からなる一次コイル〜三次コイルを複数のターン形状としたことで絶縁スペースが増大するので、コアの窓枠面積に対する導電体の占有率が低下して電力損失（銅損）を効果的に低減することができない。   However, since the transformer 12 shown in FIG. 7 requires an insulating space in which the insulating material 7 is interposed between the coils 3a, 3b, 3c, 4a, 4b, and 4c made of a plurality of layers of copper plates, the insulating space increases. Further, the occupation ratio of the conductor with respect to the window frame area of the core 5 is lowered, and the copper loss cannot be effectively reduced. Similarly, in the transformer described in Patent Document 1, since the insulation space is increased by forming the primary coil to the tertiary coil made of the conductive plate into a plurality of turns, the occupation ratio of the conductor with respect to the window frame area of the core The power loss (copper loss) cannot be reduced effectively.

そこで、本発明は、コア内に積層状態に配置した複数のコイルの表皮効果による高周波領域での抵抗値の増加を抑制し、同時にコアの窓枠面積に対する導電体の占有率を増大して電力損失（導電体が銅製の場合には銅損）を低減することができる電磁誘導機器を提供することを目的としている。   Therefore, the present invention suppresses an increase in resistance value in the high frequency region due to the skin effect of a plurality of coils arranged in a laminated state in the core, and at the same time increases the occupation ratio of the conductor with respect to the core window frame area. An object of the present invention is to provide an electromagnetic induction device capable of reducing loss (copper loss when the conductor is made of copper).

上記目的を達成するために、本発明に係る電磁誘導機器は、コアに形成したリング状のコイル収容空間に複数のコイルを積層して収容した電磁誘導機器において、前記複数のコイルは、表面に凹凸部が形成され、１ターン形状の導電板からなる２つの凹凸板状コイルを備え、一方の前記凹凸板状コイルの凹部に他方の前記凹凸板状コイルの凸部が入り込み、前記一方の板状コイルの凸部が前記他方の板状コイルの凹部に入り込みながら積層されている。 In order to achieve the above object, an electromagnetic induction device according to the present invention is an electromagnetic induction device in which a plurality of coils are stacked and accommodated in a ring-shaped coil accommodation space formed in a core. An uneven portion is formed, and includes two uneven plate-like coils made of a one-turn shaped conductive plate. The convex portion of the other uneven plate-like coil enters the concave portion of the one uneven plate-like coil, and the one plate The convex portions of the coiled coils are stacked while entering the concave portion of the other plate coil .

また、凹凸板状コイルが１ターン形状（１ターンに巻回した形状）の導電板であり、コア収容空間に絶縁材を充填するための無駄な絶縁スペースが存在しないので、コアの窓枠（コイル収容空間の横断面）面積に対する導電体の占有率が増大し、電力損失が効果的に低減される。 In addition, since the concavo-convex plate-shaped coil is a conductive plate having a one-turn shape (a shape wound in one turn) and there is no useless insulating space for filling the core housing space with an insulating material, the core window frame ( occupancy conductor increases with respect to cross-sectional) area of the coil housing space, power loss Ru are effectively reduced.

さらに、この発明によると、上記の作用に加えて、２つの凹凸板状コイルは、それらの凹部に凸部が入り込んだ状態で積層されているので、さらに絶縁材を充填するための絶縁スペースが減少し、コアの窓枠面積に対する銅の占有率が増大する。
また、本発明に係る電磁誘導機器は、コアに形成したリング状のコイル収容空間に複数のコイルを積層して収容した電磁誘導機器において、前記複数のコイルは、導電線からなる線状コイルと、表面に凹凸部が形成され、１ターン形状の導電板からなる凹凸板状コイルを備え、前記凹凸板状コイルの凹部は渦巻き形状に形成され、この凹部に入り込んだ前記線状コイルが複数ターン形状に巻回されているとともに、前記凹凸板状コイルは、板厚方向の一方の表面のみに前記凹凸部が形成されており、２つの前記凹凸板状コイルを、前記板厚方向の他方の表面の平坦面同士を対向させて上下に積層し、上層の前記凹凸板状コイルの上方を向く渦巻き形状の前記凹部に線状コイルを複数ターン形状に巻回し、下層の前記凹凸板状コイルの下方を向く渦巻き形状の前記凹部に他の線状コイルを複数ターン形状に巻回した。 Furthermore, according to the present invention, in addition to the above-described action, the two concavo-convex plate coils are laminated with the convex portions entering the concave portions, and therefore there is an insulating space for filling the insulating material. The copper occupancy relative to the core window frame area is increased.
Moreover, the electromagnetic induction device according to the present invention is an electromagnetic induction device in which a plurality of coils are stacked and accommodated in a ring-shaped coil accommodation space formed in a core, wherein the plurality of coils are linear coils made of conductive wires. And a concave-convex plate-shaped coil formed of a one-turn conductive plate, the concave portion of the concave-convex plate-shaped coil is formed in a spiral shape, and the linear coil entering the concave portion has a plurality of turns. The concavo-convex plate-shaped coil has the concavo-convex portion formed only on one surface in the plate thickness direction, and the two concavo-convex plate coils are connected to the other in the plate thickness direction. The flat surfaces are opposed to each other and stacked one above the other, and a linear coil is wound in a plurality of turns around the spiral concave portion facing the upper portion of the concave and convex plate coil. Facing down In the recess of the spiral wound other linear coils into a plurality of turns shape.

この発明によると、凹凸板状コイルの凹部を渦巻き形状に形成し、この凹部に入り込んだ線状コイルが複数ターン形状に巻回されているので、さらに絶縁材を充填するための絶縁スペースが減少し、コアの窓枠面積に対する銅の占有率が増大する。 According to the present invention, the concave portion of the concavo-convex plate coil is formed in a spiral shape, and the linear coil that has entered the concave portion is wound in a plurality of turns, further reducing the insulation space for filling the insulating material. and, occupancy of copper to the window frame area of the core is you increase.

また、この発明によると、絶縁材を充填するための絶縁スペースが減少することでコアの窓枠面積に対する銅の占有率が増大するとともに、積層方向の厚さが減少するので、小型化を促進することができる。
さらに、本発明に係る電磁誘導機器は、コアに形成したリング状のコイル収容空間に複数のコイルを積層して収容した電磁誘導機器において、前記複数のコイルは、導電線からなる線状コイルと、表面に凹凸部が形成され、１ターン形状の導電板からなる凹凸板状コイルを備え、前記凹凸板状コイルの凹部は渦巻き形状に形成され、この凹部に入り込んだ前記線状コイルが複数ターン形状に巻回されているとともに、前記凹凸板状コイルは、板厚方向の一方の表面のみに前記凹凸部が形成されており、２つの前記凹凸板状コイルを、互いの前記凹凸部が対向するように上下に積層し、これら２つの前記凹凸板状コイルの互いに対峙した渦巻き形状の前記凹部に、線状コイルを複数ターン形状に巻回し、且つ積層して配置した。 In addition, according to the present invention, since the insulation space for filling the insulating material is reduced, the occupation ratio of copper to the window frame area of the core is increased, and the thickness in the stacking direction is reduced, thereby promoting the miniaturization. can do.
Furthermore, the electromagnetic induction device according to the present invention is an electromagnetic induction device in which a plurality of coils are stacked and accommodated in a ring-shaped coil accommodation space formed in a core, and the plurality of coils are linear coils made of conductive wires. And a concave-convex plate-shaped coil formed of a one-turn conductive plate, the concave portion of the concave-convex plate-shaped coil is formed in a spiral shape, and the linear coil entering the concave portion has a plurality of turns. The concavo-convex plate-shaped coil is wound in a shape, and the concavo-convex portion is formed only on one surface in the plate thickness direction, and the concavo-convex portions of the two concavo-convex plate coils face each other. The linear coils were wound in a plurality of turns in the spiral concave portions of the two concavo-convex plate coils facing each other and arranged in a stacked manner.

この発明によると、絶縁材を充填するための絶縁スペースが減少することでコアの窓枠面積に対する導電体の占有率が増大し、積層方向の厚さが減少するので小型化を促進することができるとともに、凹凸板状コイルの互いに対峙した渦巻き形状の凹部が、線状コイルを複数ターンに巻回して積層するボビンとして機能するので、線状コイルの巻回作業を容易に行なうことができる。   According to the present invention, since the insulating space for filling the insulating material is reduced, the occupation ratio of the conductor with respect to the window frame area of the core is increased, and the thickness in the stacking direction is reduced. In addition, the spiral concave portions of the concavo-convex plate coil that face each other function as a bobbin that winds and laminates the linear coil in a plurality of turns, so that the winding operation of the linear coil can be easily performed.

本発明に係る電磁誘導機器によると、表皮効果による高周波領域での抵抗値の低減を図ることができるとともに、コアの窓枠（コイル収容空間の横断面）面積に対する導電体の占有率が増大し、電力損失を効果的に低減することができる。   According to the electromagnetic induction device according to the present invention, it is possible to reduce the resistance value in the high frequency region due to the skin effect, and increase the occupation ratio of the conductor with respect to the area of the core window frame (cross section of the coil housing space). The power loss can be effectively reduced.

本発明に係る電磁誘導機器である第１実施形態のトランスの構造を示す断面図である。It is sectional drawing which shows the structure of the transformer of 1st Embodiment which is an electromagnetic induction apparatus which concerns on this invention. 本発明に係る電磁誘導機器である第２実施形態のトランスの構造を示す断面図である。It is sectional drawing which shows the structure of the transformer of 2nd Embodiment which is an electromagnetic induction apparatus which concerns on this invention. 本発明に係る電磁誘導機器である第３実施形態のトランスの構造を示す断面図である。It is sectional drawing which shows the structure of the transformer of 3rd Embodiment which is an electromagnetic induction apparatus which concerns on this invention. 電磁誘導機器であるトランスの一般的な結線図を示すものである。The general connection diagram of the transformer which is an electromagnetic induction device is shown. コイルとして導電板を使用した従来のトランスの構造を示す図である。It is a figure which shows the structure of the conventional transformer which uses the electrically conductive board as a coil. コイルとして導電板を使用し、電導線をボビンに巻回した従来のトランスの構造を示す図である。It is a figure which shows the structure of the conventional transformer which used the electrically conductive board as a coil and wound the conducting wire around the bobbin. コイルを複数の電導板で構成した従来のトランスの構造を示す図である。It is a figure which shows the structure of the conventional trans | transformer which comprised the coil with the some electroconductive board.

以下、本発明を実施するための形態（以下、実施形態という。）を、図面を参照しながら詳細に説明する。なお、図４及び図５で示した構成と同一構成部分には同一符号を付す。
［第１実施形態］
図１は、本発明に係る第１実施形態のトランス２０を示すものである。このトランス２０は、図４と同様の結線構造とした一次コイルと、互いに直列に接続した二次コイル２２及び三次コイル２３とを備えている。 DESCRIPTION OF EMBODIMENTS Hereinafter, modes for carrying out the present invention (hereinafter referred to as embodiments) will be described in detail with reference to the drawings. In addition, the same code | symbol is attached | subjected to the same component as the structure shown in FIG.4 and FIG.5.
[First Embodiment]
FIG. 1 shows a transformer 20 according to a first embodiment of the present invention. The transformer 20 includes a primary coil having a connection structure similar to that shown in FIG. 4, and a secondary coil 22 and a tertiary coil 23 connected in series with each other.

本実施形態のトランス２０は、一対のコア分割体５ａ，５ｂからなるコア５にリング状のコイル収容空間６が形成されており、このコイル収容空間６に、一次コイル、二次コイル２２、三次コイル２３が互いに絶縁された状態で積層されている。
一次コイルは、互いに並列または直列接続された銅線からなる第１の一次コイル２１ａと第２の一次コイル２１ｂとで構成されており、第１の一次コイル２１ａは、複数ターン形状（銅線を放射方向に徐々に拡径しつつ複数に巻回した形状）のコイル２１ａ１，２１ａ２が直列に接続され、第２の一次コイル２１ｂも、銅線を複数ターン形状に配置したコイル２１ｂ１，２１ｂ２が直列に接続された構造とされている。 In the transformer 20 of the present embodiment, a ring-shaped coil housing space 6 is formed in the core 5 composed of a pair of core divided bodies 5a and 5b. In the coil housing space 6, a primary coil, a secondary coil 22, and a tertiary coil are formed. The coils 23 are stacked in a state of being insulated from each other.
The primary coil is composed of a first primary coil 21a and a second primary coil 21b made of copper wires connected in parallel or in series with each other, and the first primary coil 21a has a multi-turn shape (copper wire). Coils 21a1 and 21a2 having a shape in which the diameter is gradually expanded in the radial direction) are connected in series, and the second primary coil 21b is also formed of coils 21b1 and 21b2 in which copper wires are arranged in a plurality of turns. The structure is connected to

二次コイル２２は、１ターン形状（１ターンに巻回した形状）の銅板である。この二次コイル２２は、板厚方向の一方の表面に、複数のリング状の凹部２２ａ及び凸部２２ｂが径方向に同一間隔で形成されており、板厚方向の他方の表面は平坦面として形成されている。
三次コイル２３も、１ターン形状の銅板であり、板厚方向の一方の表面に、複数のリング状の凹部２３ａ及び凸部２３ｂが径方向に同一間隔で形成されており、板厚方向の他方の表面は平坦面として形成されている。 The secondary coil 22 is a copper plate having a one-turn shape (a shape wound around one turn). The secondary coil 22 has a plurality of ring-shaped concave portions 22a and convex portions 22b formed at the same interval in the radial direction on one surface in the thickness direction, and the other surface in the thickness direction is a flat surface. Is formed.
The tertiary coil 23 is also a one-turn copper plate, and a plurality of ring-shaped concave portions 23a and convex portions 23b are formed on one surface in the plate thickness direction at the same interval in the radial direction. The surface of is formed as a flat surface.

二次コイル２２及び三次コイル２３は、互いの凹部２２ａ，２３ａに凸部２２ｂ，２３ｂが入り込んだ状態で積層されている。
そして、二次コイル２２の上層に第１の一次コイル２１ａが配置され、三次コイル２３の下層に第２の一次コイル２１ｂが配置され、各層のコイル間を絶縁する絶縁材７が、コイル収容空間６に充填されている。 The secondary coil 22 and the tertiary coil 23 are laminated in a state where the convex portions 22b and 23b are inserted into the concave portions 22a and 23a.
The first primary coil 21a is disposed on the upper layer of the secondary coil 22, the second primary coil 21b is disposed on the lower layer of the tertiary coil 23, and the insulating material 7 that insulates between the coils of each layer is provided in the coil housing space. 6 is filled.

上記構成のトランス２０によると、表面が平坦な銅板をコイルとして使用した従来のトランスと比較して、二次コイル２２が、板厚方向の一方の表面に複数のリング状の凹部２２ａ及び凸部２２ｂが形成された銅板であり、三次コイル２３も、板厚方向の一方の表面に複数のリング状の凹部２３ａ及び凸部２３ｂが形成された銅板としており、二次コイル２２及び三次コイル２３の表面積が大幅に増大するので、表皮効果による影響を少なくし、高周波領域での抵抗値の低減を図ることができる。   According to the transformer 20 configured as described above, the secondary coil 22 has a plurality of ring-shaped concave portions 22a and convex portions on one surface in the plate thickness direction, as compared with a conventional transformer using a copper plate having a flat surface as a coil. 22b is a copper plate, and the tertiary coil 23 is also a copper plate in which a plurality of ring-shaped concave portions 23a and convex portions 23b are formed on one surface in the thickness direction of the secondary coil 22 and the tertiary coil 23. Since the surface area greatly increases, the influence of the skin effect can be reduced, and the resistance value in the high frequency region can be reduced.

また、本実施形態の二次コイル２２及び三次コイル２３は、多数の銅板を備えたもの、或いは銅板を複数ターンに巻回した従来のトランスと比較して、１ターン形状（１ターンに巻回した形状）の銅板であり、二次コイル２２及び三次コイル２３の凹部２２ａ，２３ａに凸部２２ｂ，２３ｂが入り込んだ状態で積層されているので、絶縁材７を充填するための無駄な絶縁スペースが存在せず、コア５の窓枠（コイル収容空間６の横断面）面積に対する銅の占有率が増大し、銅損を効果的に低減することができる。   Further, the secondary coil 22 and the tertiary coil 23 of the present embodiment have a one-turn shape (winding in one turn) as compared with a conventional transformer having a large number of copper plates or a copper plate wound in a plurality of turns. Of the secondary coil 22 and the tertiary coil 23 are stacked with the convex portions 22b and 23b entering the concave portions 22a and 23a of the secondary coil 22 and the tertiary coil 23. Therefore, a wasteful insulating space for filling the insulating material 7 is used. , The occupation ratio of copper with respect to the area of the window frame of the core 5 (cross section of the coil housing space 6) increases, and copper loss can be effectively reduced.

［第２実施形態］
次に、図２は、本発明に係る第２実施形態のトランス２５を示すものである。この実施形態において第１実施形態と同一構成の部分は、同一符号を付して説明は省略する。
本実施形態のトランス２５は、コア５のリング形状のコイル収容空間６に、一次コイル（第１の一次コイル２１ａ，第２の一次コイル２１ｂ）、凹凸形状の表面を有する二次コイル２６及び三次コイル２７が互いに絶縁された状態で積層されている。
二次コイル２６は、１ターン形状の銅板であり、板厚方向の一方の表面に渦巻き形状の凹部２６ａが形成されているとともに、板厚方向の他方の表面は平坦面として形成されている。 [Second Embodiment]
Next, FIG. 2 shows a transformer 25 according to a second embodiment of the present invention. In this embodiment, the same components as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.
The transformer 25 according to the present embodiment includes a primary coil (first primary coil 21a and second primary coil 21b), a secondary coil 26 having an uneven surface, and a tertiary coil in a ring-shaped coil housing space 6 of the core 5. The coils 27 are stacked in a state of being insulated from each other.
The secondary coil 26 is a copper plate having a one-turn shape. A spiral recess 26a is formed on one surface in the plate thickness direction, and the other surface in the plate thickness direction is formed as a flat surface.

三次コイル２７も、１ターン形状の銅板であり、板厚方向の一方の表面に渦巻き形状の凹部２７ａが形成されているとともに、板厚方向の他方の表面は平坦面として形成されている。
二次コイル２６及び三次コイル２７は、平坦面とした板厚方向の他方の表面同士を対向し、渦巻き形状の凹部２６ａが上方を向き、渦巻き形状の凹部２７ａが下方を向くように積層されている。 The tertiary coil 27 is also a one-turn copper plate, and a spiral concave portion 27a is formed on one surface in the plate thickness direction, and the other surface in the plate thickness direction is formed as a flat surface.
The secondary coil 26 and the tertiary coil 27 are laminated so that the other surfaces in the plate thickness direction, which are flat surfaces, are opposed to each other, the spiral-shaped recess 26a faces upward, and the spiral-shaped recess 27a faces downward. Yes.

そして、二次コイル２６の凹部２６ａの内部に、第１の一次コイル２１ａを複数ターン形状に巻回して配置し、三次コイル２７の凹部２７ａの内部に、第２の一次コイル２１ｂを複数ターン形状に巻回して配置している。そして、各コイル間を絶縁する絶縁材７が、コイル収容空間６に充填されている。
上記構成のトランス２５によると、二次コイル２６が、板厚方向の一方の表面に螺旋状の凹部２６ａが形成された銅板であり、三次コイル２７も、板厚方向の一方の表面に螺旋状の凹部２７ａが形成された銅板としており、二次コイル２６及び三次コイル２７の表面積が大幅に増大するので、表皮効果による影響を少なくし、高周波領域での抵抗値の低減を図ることができる。 The first primary coil 21a is wound in a plurality of turns inside the recess 26a of the secondary coil 26, and the second primary coil 21b is placed in a plurality of turns inside the recess 27a of the tertiary coil 27. It is wound around and arranged. And the coil accommodation space 6 is filled with the insulating material 7 which insulates between each coil.
According to the transformer 25 having the above-described configuration, the secondary coil 26 is a copper plate in which a spiral concave portion 26a is formed on one surface in the plate thickness direction, and the tertiary coil 27 is also spiral on one surface in the plate thickness direction. Since the surface area of the secondary coil 26 and the tertiary coil 27 is greatly increased, the influence of the skin effect can be reduced and the resistance value in the high frequency region can be reduced.

また、本実施形態のトランス２５は、二次コイル２６の螺旋状の凹部２６ａ、三次コイル２７の螺旋状の凹部２７ａに、第１の一次コイル２１ａ及び第２の一次コイル２１ｂが複数ターン形状で巻回されているので、さらにコア５の窓枠面積に対する銅の占有率が増大し、銅損を大幅に低減することができる。
さらに、二次コイル２６の螺旋状の凹部２６ａ、三次コイル２７の螺旋状の凹部２７ａの内部に、第１の一次コイル２１ａ及び第２の一次コイル２１ｂが配置されることでトランス２５の厚さが減少するので、小型化を促進することができる。 Further, in the transformer 25 of the present embodiment, a spiral recess 26a of the secondary coil 26 and a spiral recess 27a of the tertiary coil 27 are formed so that the first primary coil 21a and the second primary coil 21b have a plurality of turns. Since it is wound, the occupation ratio of copper to the window frame area of the core 5 is further increased, and the copper loss can be greatly reduced.
Further, the first primary coil 21a and the second primary coil 21b are arranged inside the spiral recess 26a of the secondary coil 26 and the spiral recess 27a of the tertiary coil 27, whereby the thickness of the transformer 25 is increased. Therefore, downsizing can be promoted.

［第３実施形態］
さらに、図３は、本発明に係る第３実施形態のトランス３０を示すものである。
本実施形態のトランス３０は、コア５のリング状のコイル収容空間６に、一次コイル３１、凹凸形状の表面を有する二次コイル３２及び三次コイル３３が互いに絶縁された状態で積層されている。
二次コイル３２は、１ターン形状の銅板であり、板厚方向の一方の表面に渦巻き形状の凹部３２ａが形成されているとともに、板厚方向の他方の表面は平坦面として形成されている。 [Third Embodiment]
FIG. 3 shows a transformer 30 according to a third embodiment of the present invention.
In the transformer 30 of the present embodiment, a primary coil 31, a secondary coil 32 having a concavo-convex surface, and a tertiary coil 33 are stacked in a ring-shaped coil housing space 6 of the core 5 in a state where they are insulated from each other.
The secondary coil 32 is a copper plate having a one-turn shape, and a spiral recess 32a is formed on one surface in the plate thickness direction, and the other surface in the plate thickness direction is formed as a flat surface.

三次コイル３３も、１ターン形状の銅板であり、板厚方向の一方の表面に、二次コイル３２の凹部３２ａと同一ピッチで渦巻き形状の凹部３３ａが形成されているとともに、板厚方向の他方の表面は平坦面として形成されている。
二次コイル３２及び三次コイル３３は、互いの渦巻き形状の凹部３２ａ、３３ａを対向させながら上下に積層されている。 The tertiary coil 33 is also a one-turn-shaped copper plate, and a spiral recess 33a is formed on one surface in the plate thickness direction at the same pitch as the recess 32a of the secondary coil 32, and the other in the plate thickness direction. The surface of is formed as a flat surface.
The secondary coil 32 and the tertiary coil 33 are stacked one above the other with the spiral concave portions 32a and 33a facing each other.

そして、二次コイル３２及び三次コイル３３の互いに対向した渦巻き形状の凹部３２ａ、３３ａの内部に、複数ターン形状に巻回されて複数層に積層された一次コイル３１が配置されている。そして、各コイル間を絶縁する絶縁材７が、コイル収容空間６に充填されている。
上記構成のトランス３０によると、二次コイル３２が、板厚方向の一方の表面に螺旋状の凹部３２ａが形成された銅板であり、三次コイル３３も、板厚方向の一方の表面に螺旋状の凹部３３ａが形成された銅板としており、二次コイル３２及び三次コイル３３の表面積が大幅に増大するので、表皮効果による影響を少なくし、高周波領域での抵抗値の低減を図ることができる。 A primary coil 31 wound in a plurality of turns and stacked in a plurality of layers is disposed inside spiral recesses 32a and 33a facing each other of the secondary coil 32 and the tertiary coil 33. And the coil accommodation space 6 is filled with the insulating material 7 which insulates between each coil.
According to the transformer 30 configured as described above, the secondary coil 32 is a copper plate in which a spiral recess 32a is formed on one surface in the plate thickness direction, and the tertiary coil 33 is also spiral on one surface in the plate thickness direction. Since the surface area of the secondary coil 32 and the tertiary coil 33 is significantly increased, the influence of the skin effect can be reduced, and the resistance value in the high frequency region can be reduced.

また、本実施形態のトランス３０は、互いに対向した渦巻き形状の凹部３２ａ、３３ａの内部に、複数ターン形状に巻回されて複数層に積層された一次コイル３１が配置されているので、コア５の窓枠面積に対する銅の占有率が増大し、銅損を大幅に低減することができる。
また、二次コイル３２の螺旋状の凹部３２ａ、三次コイル３３の螺旋状の凹部３３ａの内部に一次コイル３１が配置されることでトランス３０の厚さが減少するので、小型化を促進することができる。 Further, in the transformer 30 of the present embodiment, the primary coil 31 wound in a plurality of turns and stacked in a plurality of layers is disposed inside the spiral recesses 32a and 33a facing each other. The occupation ratio of copper with respect to the window frame area increases, and copper loss can be greatly reduced.
Moreover, since the thickness of the transformer 30 is reduced by arranging the primary coil 31 in the spiral recess 32a of the secondary coil 32 and the spiral recess 33a of the tertiary coil 33, the miniaturization is promoted. Can do.

さらに、二次コイル３２及び三次コイル３３の互いに対向した渦巻き形状の凹部３２ａ、３３ａが、一次コイル３１を複数ターンに巻回して積層するボビンとして機能するので、一次コイル３１の巻回作業を容易に行なうことができる。
なお、上記各実施形態ではトランスの構造について説明したが他の電磁誘導機器に適用してもよく、例えば、コア内部に凹凸形状の表面を有する銅板からなるコイルを積層した状態で収容した構造とし、高周波電流が通電するリアクトルに適用しても、表皮効果による高周波領域での抵抗値の低減を図ることができるとともに、コアの窓枠面積に対する導電体の占有率が増大し、電力損失（銅損）を大幅に低減することができる。 Further, the spiral concave portions 32a and 33a of the secondary coil 32 and the tertiary coil 33 that face each other function as a bobbin that winds the primary coil 31 in a plurality of turns, thereby facilitating the winding operation of the primary coil 31. Can be done.
In each of the above embodiments, the structure of the transformer has been described. However, the structure may be applied to other electromagnetic induction devices. For example, a structure in which a coil made of a copper plate having a concavo-convex surface inside the core is accommodated in a stacked state. Even when applied to a reactor through which a high-frequency current flows, the resistance value in the high-frequency region can be reduced due to the skin effect, and the occupancy rate of the conductor with respect to the window frame area of the core increases, resulting in power loss (copper Loss) can be greatly reduced.

５…コア、５ａ，５ｂ…コア分割体、６…コイル収容空間、７…絶縁材、２０…トランス、２１ａ…第１の一次コイル、２１ａ１，２１ａ２…第１の一次コイルを構成する銅線（導電線）からなるコイル、２１ｂ…第２の一次コイル、２１ｂ１，２１ｂ２…第２の一次コイルを構成する銅線（導電線）からなるコイル、２２…銅板（導電板）からなる二次コイル、２２ａ…リング形状の凹部、２２ｂ…リング形状の凸部、２３…銅板（導電板）からなる三次コイル、２３ａ…リング形状の凹部、２３ｂ…リング形状の凸部、２５…トランス、２６…銅板（導電板）からなる二次コイル、２６ａ…渦巻き形状の凹部、２７…銅板（導電板）からなる三次コイル、２７ａ…渦巻き形状の凹部、３０…トランス、３１…銅線（導電線）からなる一次コイル、３２…銅板（導電板）からなる二次コイル、３２ａ…渦巻き形状の凹部、３３…銅板（導電板）からなる三次コイル、３３ａ…渦巻き形状の凹部   DESCRIPTION OF SYMBOLS 5 ... Core, 5a, 5b ... Core division body, 6 ... Coil accommodation space, 7 ... Insulating material, 20 ... Transformer, 21a ... 1st primary coil, 21a1, 21a2 ... Copper wire which comprises 1st primary coil ( Coil made of conductive wire), 21b ... second primary coil, 21b1, 21b2 ... coil made of copper wire (conductive wire) constituting the second primary coil, 22 ... secondary coil made of copper plate (conductive plate), 22a ... Ring-shaped concave portion, 22b ... Ring-shaped convex portion, 23 ... Tertiary coil made of copper plate (conductive plate), 23a ... Ring-shaped concave portion, 23b ... Ring-shaped convex portion, 25 ... Transformer, 26 ... Copper plate ( Secondary coil made of a conductive plate), 26a ... spiral shaped concave portion, 27 ... tertiary coil made of copper plate (conductive plate), 27a ... spiral shaped concave portion, 30 ... transformer, 31 ... primary made of copper wire (conductive wire) Yl, 32 ... copper (conductive plate) secondary coil consisting of, 32a ... concave portion of the spiral shape, 33 ... tertiary coil made of a copper plate (conductive plate), recesses 33a ... spiral shape

Claims (3)

コアに形成したリング状のコイル収容空間に複数のコイルを積層して収容した電磁誘導機器において、
前記複数のコイルは、表面に凹凸部が形成され、１ターン形状の導電板からなる２つの凹凸板状コイルを備え、一方の前記凹凸板状コイルの凹部に他方の前記凹凸板状コイルの凸部が入り込み、前記一方の板状コイルの凸部が前記他方の板状コイルの凹部に入り込みながら積層されていることを特徴とする電磁誘導機器。 In an electromagnetic induction device that houses a plurality of coils stacked in a ring-shaped coil housing space formed in the core,
Wherein the plurality of coils, uneven portions are formed on the surface, 1 provided with a turn conductive two concave-convex plate coil consisting of plate shape, convex on one of said concave-convex plate the concave-convex plate coil recess in the other of the coil The electromagnetic induction device is characterized in that a part enters and the convex part of the one plate coil is stacked while entering the concave part of the other plate coil . コアに形成したリング状のコイル収容空間に複数のコイルを積層して収容した電磁誘導機器において、
前記複数のコイルは、導電線からなる線状コイルと、表面に凹凸部が形成され、１ターン形状の導電板からなる凹凸板状コイルを備え、
前記凹凸板状コイルの凹部は渦巻き形状に形成され、この凹部に入り込んだ前記線状コイルが複数ターン形状に巻回されているとともに、
前記凹凸板状コイルは、板厚方向の一方の表面のみに前記凹凸部が形成されており、２つの前記凹凸板状コイルを、前記板厚方向の他方の表面の平坦面同士を対向させて上下に積層し、上層の前記凹凸板状コイルの上方を向く渦巻き形状の前記凹部に線状コイルを複数ターン形状に巻回し、下層の前記凹凸板状コイルの下方を向く渦巻き形状の前記凹部に他の線状コイルを複数ターン形状に巻回したことを特徴とする電磁誘導機器。 In an electromagnetic induction device that houses a plurality of coils stacked in a ring-shaped coil housing space formed in the core,
The plurality of coils include a linear coil made of a conductive wire, and a concavo-convex plate coil made of a one-turn shaped conductive plate with a concavo-convex portion formed on the surface,
The concave portion of the concave-convex plate coil is formed in a spiral shape, and the linear coil that has entered the concave portion is wound in a plurality of turns,
The concavo-convex plate-like coil has the concavo-convex portion formed only on one surface in the plate thickness direction, and the two concavo-convex plate-like coils are opposed to each other on the flat surfaces of the other surface in the plate thickness direction. A linear coil is wound in a plurality of turns on the spiral-shaped recess facing the upper side of the concavo-convex plate coil on the upper layer, and the spiral-shaped recess facing the lower side of the concavo-convex plate coil on the lower layer. magnetic induction device conductive, characterized in that wound and another linear coils into a plurality of turns shape. コアに形成したリング状のコイル収容空間に複数のコイルを積層して収容した電磁誘導機器において、
前記複数のコイルは、導電線からなる線状コイルと、表面に凹凸部が形成され、１ターン形状の導電板からなる凹凸板状コイルを備え、
前記凹凸板状コイルの凹部は渦巻き形状に形成され、この凹部に入り込んだ前記線状コイルが複数ターン形状に巻回されているとともに、
前記凹凸板状コイルは、板厚方向の一方の表面のみに前記凹凸部が形成されており、２つの前記凹凸板状コイルを、互いの前記凹凸部が対向するように上下に積層し、これら２つの前記凹凸板状コイルの互いに対峙した渦巻き形状の前記凹部に、線状コイルを複数ターン形状に巻回し、且つ積層して配置したことを特徴とする電磁誘導機器。 In an electromagnetic induction device that houses a plurality of coils stacked in a ring-shaped coil housing space formed in the core,
The plurality of coils include a linear coil made of a conductive wire, and a concavo-convex plate coil made of a one-turn shaped conductive plate with a concavo-convex portion formed on the surface,
The concave portion of the concave-convex plate coil is formed in a spiral shape, and the linear coil that has entered the concave portion is wound in a plurality of turns,
The concavo-convex plate coil has the concavo-convex portion formed only on one surface in the plate thickness direction, and the two concavo-convex plate coils are stacked one above the other so that the concavo-convex portions face each other. in the recess of the spiral shape opposed to each other two of said concave-convex plate coil, winding a linear coil to a plurality of turns shape, and magnetic induction device conductive, characterized in that laminated arranged.
JP2009162756A 2009-07-09 2009-07-09 Electromagnetic induction equipment Expired - Fee Related JP5381429B2 (en)

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