JP2003045731A - Non-contact power transmission apparatus - Google Patents
Non-contact power transmission apparatusInfo
- Publication number
- JP2003045731A JP2003045731A JP2001230023A JP2001230023A JP2003045731A JP 2003045731 A JP2003045731 A JP 2003045731A JP 2001230023 A JP2001230023 A JP 2001230023A JP 2001230023 A JP2001230023 A JP 2001230023A JP 2003045731 A JP2003045731 A JP 2003045731A
- Authority
- JP
- Japan
- Prior art keywords
- ferrite
- power transmission
- coils
- contact power
- transmission apparatus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Soft Magnetic Materials (AREA)
Abstract
Description
【発明の詳細な説明】
【０００１】
【発明の属する技術分野】本発明は、コイル間に生じる
電磁誘導作用により、空間を介して電力を伝送する非接
触電力伝送装置に関する。
【０００２】
【従来の技術】従来、空隙を介して対向させたコイル間
に生じる電磁誘導作用を利用して非接触に電力を伝送す
る方式は、コードレス・パワー・ステーションと呼ば
れ、１９９３年度刊行の日本応用磁気学会誌［１７，４
８５−４８８］に開示されており、その利用例として
は、非接触な電力伝送を行い得ることから、例えば、１
９９１年度刊行の電気学会論文誌［Ａ，１１１−Ａ，８
０７］に開示されているように、人工心臓の駆動装置へ
の有効な電力供給手段として挙げられている。
【０００３】因みに、完全埋込型の人工心臓用トランス
には、一対のコイルが使用され、そのトランスには、薄
型化が要求されている。人工心臓の駆動装置のエネルギ
ー伝送用の磁性材料としてアモルファス磁性材料を用い
たトランスでは、その厚さが３ｍｍ程度になっている
が、フェライトを用いたポットコアタイプのものでは、
トランスの厚さが１５ｍｍ程度になっている。また、本
発明者らはフェライト板を用いたトランスでトランスの
薄型化を実現している。
【０００４】このようなコードレス・パワー・ステーシ
ョンは、人工心臓の駆動装置への電力供給手段以外に
も、携帯用家電製品等への電力供給やバッテリ充電にも
応用可能である。
【０００５】
【発明が解決しようとする課題】しかしながら、上述し
たアモルファス磁性材料を用いて形成したトランスで
は、薄型化を実現しているが、電力伝送時にはアモルフ
ァス磁性材では、高周波磁界による発熱が生じ、長時間
使用の場合、人体での低温火傷を生ずるまでに昇温する
という欠点を有している。
【０００６】また、人体等に使用する場合においては、
コイル形状がある程度の曲率をもって形成される方が好
都合となる場合も多い。従って、磁性体と配置したコイ
ルがある程度の可撓性を有することは、実用上、有益と
なる。
【０００７】前述のアモルファス磁性材を装着したコイ
ルにおいては、良好な可撓性が得られている。
【０００８】一方、フェライト板を装着したコイルにお
いては、電力伝送時におけるフェライト部での発熱は殆
ど生じず、生体への火傷などの問題は発生しない。一
方、フェライト板は硬く、脆いので、フェライト板を装
着したコイルの可撓性はない。
【０００９】本発明は、かかる問題点を解決すべくなさ
れたもので、その技術的課題は、伝送電力の増大と変換
効率の向上を十分に図り得た状態で、フェライト板を装
着したコイルに可撓性を付与することにある。
【００１０】
【課題を解決するための手段】本発明によれば、空隙を
介して対向するコイルにおける電磁誘導作用を利用し
て、非接触に電力を伝送する装置において、前記対向す
るコイルの外側部に軟磁性フェライト板を複数個敷設し
てなるフェライトシートを装着した非接触電力伝送装置
が得られる。
【００１１】
【作用】本発明においては、対向した平面渦巻型コイル
の外側部に、軟磁性フェライトチップを敷くように設け
たフェライトシートを配置することにより、非接触電力
伝送が良好で、発熱が殆どなく、可撓性を有するトラン
ス部が実現できる。
【００１２】非接触電力伝送が良好となるのは、フェラ
イトシート部において、磁束の捕捉及び１次側と２次側
の磁束結合が向上するからである。また、発熱が殆ど生
じないのは、フェライトの電気抵抗が高いので、電磁誘
導作用による渦電流発熱が極めて少ないためである。ま
た、フェライト部の可撓性は、フェライトチップをプラ
スチックシート等に貼り付けて、フェライトシート状に
形成することによって、ある程度の変形が可能となるこ
とで、付与している。
【００１３】
【実施例】以下、実施例について説明する。
【００１４】（実施例１）図１は、本発明の実施例１で
用いるフェライトシートを示す斜視図である。
【００１５】まず、透磁率が約２５００で、飽和磁化が
約０.５Ｔ（５０００Ｇ）のＭｎ-Ｚｎ系スピネルフェラ
イト焼結体を使用して、厚さ１ｍｍからなる辺長１１ｍ
ｍの正方形状角板１１と、これを対角方向に切断して、
二等辺長各１０ｍｍとなる二等辺三角形板１２を作製し
た。
【００１６】平面渦巻コイルとして、直径１００μｍの
銅線を１００本束ねたものを５ターン巻線し、外径３０
ｍｍ、内径１５ｍｍ、厚さ１.５ｍｍに作製し、これら
を対向させて、電源に接続される方を１次側（入力
側）、電磁誘導で出力が発生する方を２次側（出力側）
とした。
【００１７】次に、これら平面渦巻コイルを１ｍｍの空
隙を持たせて対向させ、１対の平面渦巻コイルを構成
し、周波数１００ｋＨｚ、１次側電圧、４Ｖの条件下
で、２次側出力（最大伝送電力）Ｐ２及び変換効率ηを
求めた。但し、η＝（出力電力／入力電力）×１００
（％）である。
【００１８】測定における電磁誘導部の構成を、（１）
対向するコイルのみの場合と、（２）上述したＭｎ−Ｚ
ｎ系スピネルフェライト焼結体の正方形状角板１１を５
枚とＭｎ−Ｚｎ系スピネルフェライト焼結体の二等辺三
角形板１２の４枚を約０.５ｍｍの隙間を空けてポリエ
ステルフィルム１３に貼り付け、正八角形状に作製した
フェライトシートを対向するコイルの両外側部に装着し
た場合の２種類について測定している。その結果を表１
に示す。
【００１９】
【表１】
【００２０】フェライトシートを装着することにより、
２次側出力Ｐ２及び変換効率ηが著しく向上することが
判る。
【００２１】また、フェライトシートを装着したコイル
部は可撓性を保有し、曲率半径５０ｍｍ程度までは容易
に到達できた。
【００２２】（実施例２）図２は、本発明の実施例２で
用いるフェライトシートを示す斜視図である。
【００２３】まず、透磁率が約８００で、飽和磁化が約
０.３５Ｔ（３５００Ｇ）のＮｉ-Ｃｕ-Ｚｎ系スピネル
フェライト焼結体を使用して、厚さ０.５ｍｍから成る
辺長５ｍｍの正方形状角板２１と、これを対角方向に切
断して二等辺長各４ｍｍとなる二等辺三角形板２２を作
製した。
【００２４】これら四角形板２４枚と三角形板８枚を約
０.５ｍｍの隙間を空けて、シリコンゴムシート２３に
貼り付け、正八角形状にフェライトシートを作製した。
【００２５】これを使用した効果について、実施例１と
同様にして測定した。その結果を表２に示す。
【００２６】
【表２】
【００２７】フェライトシートを装着することにより、
２次側出力Ｐ２及び変換効率ηが著しく向上することが
判る。
【００２８】また、フェライトシートを装着したコイル
部は可撓性を保有し、曲率半径３０ｍｍ程度までは容易
に到達できた。
【００２９】
【発明の効果】本発明は、以上説明したように構成され
ているので、本発明によれば、伝送電力の増大と変換効
率の向上を十分に図り得た状態で、フェライト板を装着
したコイルに可撓性を付与した非接触電力伝送装置を提
供することができる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a non-contact power transmission device for transmitting power through a space by electromagnetic induction generated between coils. 2. Description of the Related Art Conventionally, a method of transmitting electric power in a non-contact manner by utilizing an electromagnetic induction effect generated between coils opposed to each other through a gap is called a cordless power station, and published in 1993. Journal of the Japan Society of Applied Magnetics [17,4
85-488], and as an example of its use, it is possible to perform non-contact power transmission.
The Transactions of the Institute of Electrical Engineers of Japan [A, 111-A, 8
07], it is cited as an effective power supply means for the driving device of the artificial heart. Incidentally, a pair of coils is used in a completely implantable artificial heart transformer, and the transformer is required to be thin. A transformer using an amorphous magnetic material as a magnetic material for energy transmission of an artificial heart drive device has a thickness of about 3 mm.
The thickness of the transformer is about 15 mm. In addition, the present inventors have realized a thin transformer using a transformer using a ferrite plate. [0004] Such a cordless power station can be applied to power supply to portable home electric appliances and the like and battery charging, in addition to power supply means to a driving device of an artificial heart. [0005] However, a transformer formed using the above-described amorphous magnetic material achieves a reduction in thickness. However, during power transmission, the amorphous magnetic material generates heat due to a high-frequency magnetic field. In the case of prolonged use, the temperature rises before a low-temperature burn occurs on the human body. In the case of use on a human body or the like,
It is often convenient for the coil shape to be formed with a certain degree of curvature. Therefore, it is practically useful that the coil arranged with the magnetic material has a certain degree of flexibility. [0007] In the coil provided with the above-mentioned amorphous magnetic material, good flexibility is obtained. On the other hand, in a coil equipped with a ferrite plate, heat generation in the ferrite portion during power transmission hardly occurs, and there is no problem such as burns to a living body. On the other hand, since the ferrite plate is hard and brittle, the coil provided with the ferrite plate has no flexibility. The present invention has been made to solve such a problem, and a technical problem of the present invention is to provide a coil mounted with a ferrite plate in a state where transmission power and conversion efficiency can be sufficiently improved. The purpose is to provide flexibility. According to the present invention, there is provided an apparatus for transmitting electric power in a non-contact manner by utilizing an electromagnetic induction effect in coils opposed to each other through a gap, A non-contact power transmission device in which a ferrite sheet in which a plurality of soft magnetic ferrite plates are laid on a part is mounted. According to the present invention, a ferrite sheet provided with a soft magnetic ferrite chip laid thereon is disposed on the outer side of the opposed flat spiral coil, so that non-contact power transmission is good and heat is generated. Almost no flexible transformer can be realized. The reason why the non-contact power transmission is good is that the magnetic flux capture and the magnetic coupling between the primary side and the secondary side are improved in the ferrite sheet portion. Further, heat generation hardly occurs because the electric resistance of ferrite is high, so that eddy current heat generation due to electromagnetic induction is extremely small. The flexibility of the ferrite portion is provided by attaching a ferrite chip to a plastic sheet or the like and forming the ferrite chip into a ferrite sheet so that a certain degree of deformation is possible. An embodiment will be described below. (Embodiment 1) FIG. 1 is a perspective view showing a ferrite sheet used in Embodiment 1 of the present invention. First, a Mn—Zn-based spinel ferrite sintered body having a magnetic permeability of about 2500 and a saturation magnetization of about 0.5 T (5000 G) was used, and a side length of 11 mm having a thickness of 1 mm was used.
m square plate 11 and this is cut diagonally,
An isosceles triangular plate 12 having an isosceles length of 10 mm each was produced. A bundle of 100 copper wires having a diameter of 100 μm is wound as a planar spiral coil for 5 turns, and has an outer diameter of 30 mm.
mm, an inner diameter of 15 mm and a thickness of 1.5 mm, facing each other, the side connected to the power supply is the primary side (input side), and the side that generates output by electromagnetic induction is the secondary side (output side). )
And Next, these planar spiral coils are opposed to each other with an air gap of 1 mm to form a pair of planar spiral coils, and a secondary output (under a condition of a frequency of 100 kHz, a primary side voltage and 4 V) is used. maximum transmission power) were determined P 2 and the conversion efficiency eta. Where η = (output power / input power) × 100
(%). The configuration of the electromagnetic induction unit in the measurement is as follows:
(2) Mn-Z described above
Square square plate 11 of n-based spinel ferrite
And four isosceles triangular plates 12 of a Mn-Zn spinel ferrite sintered body and affixed to a polyester film 13 with a gap of about 0.5 mm, and a ferrite sheet prepared in a regular octagonal shape is formed on a facing coil. The measurement was performed for two types when the components were attached to both outer portions. Table 1 shows the results.
Shown in [Table 1] By mounting a ferrite sheet,
It can be seen that the secondary output P 2 and the conversion efficiency η is remarkably improved. Further, the coil portion provided with the ferrite sheet has flexibility and could easily reach a radius of curvature of about 50 mm. Example 2 FIG. 2 is a perspective view showing a ferrite sheet used in Example 2 of the present invention. First, a Ni—Cu—Zn-based spinel ferrite sintered body having a magnetic permeability of about 800 and a saturation magnetization of about 0.35 T (3500 G) was used. A square square plate 21 and an isosceles triangular plate 22 having an isosceles length of 4 mm each were cut by diagonal cutting. [0024] These 24 square plates and 8 triangular plates were adhered to a silicon rubber sheet 23 with a gap of about 0.5 mm to produce a regular octagonal ferrite sheet. The effect of using this was measured in the same manner as in Example 1. Table 2 shows the results. [Table 2] By mounting a ferrite sheet,
It can be seen that the secondary output P 2 and the conversion efficiency η is remarkably improved. Further, the coil portion provided with the ferrite sheet has flexibility and could easily reach a radius of curvature of about 30 mm. According to the present invention, as described above, according to the present invention, the ferrite plate can be removed while sufficiently increasing the transmission power and improving the conversion efficiency. It is possible to provide a non-contact power transmission device in which the mounted coil has flexibility.
【図面の簡単な説明】
【図１】本発明の実施例１で用いるフェライトシートを
示す斜視図。
【図２】本発明の実施例２で用いるフェライトシートを
示す斜視図。
【符号の説明】
１１，２１ 軟磁性フェライト焼結体の正方形状角板
１２，２２ 軟磁性フェライト焼結体の二等辺三角形
板
１３ ポリエステルフィルム
２３ シリコンゴムシートBRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a ferrite sheet used in Example 1 of the present invention. FIG. 2 is a perspective view showing a ferrite sheet used in Example 2 of the present invention. DESCRIPTION OF SYMBOLS 11, 21 Square square plate of soft magnetic ferrite sintered body 12, 22 Isosceles triangular plate of soft magnetic ferrite sintered body 13 Polyester film 23 Silicon rubber sheet
Claims (1)
磁誘導作用を利用して、非接触に電力を伝送する装置に
おいて、前記対向するコイルの外側部に軟磁性フェライ
ト板を複数個敷設してなるフェライトシートを装着した
ことを特徴とする非接触電力伝送装置。Claims 1. An apparatus for transmitting electric power in a non-contact manner by utilizing an electromagnetic induction effect of coils facing each other through a gap, wherein a soft magnetic ferrite plate is provided on an outer portion of the facing coils. A non-contact power transmission device comprising a plurality of ferrite sheets laid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001230023A JP2003045731A (en) | 2001-07-30 | 2001-07-30 | Non-contact power transmission apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001230023A JP2003045731A (en) | 2001-07-30 | 2001-07-30 | Non-contact power transmission apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003045731A true JP2003045731A (en) | 2003-02-14 |
Family
ID=19062296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001230023A Pending JP2003045731A (en) | 2001-07-30 | 2001-07-30 | Non-contact power transmission apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003045731A (en) |
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| US11211975B2 (en) | 2008-05-07 | 2021-12-28 | Mojo Mobility, Inc. | Contextually aware charging of mobile devices |
| US11329511B2 (en) | 2006-06-01 | 2022-05-10 | Mojo Mobility Inc. | Power source, charging system, and inductive receiver for mobile devices |
| US11398747B2 (en) | 2011-01-18 | 2022-07-26 | Mojo Mobility, Inc. | Inductive powering and/or charging with more than one power level and/or frequency |
| US11444485B2 (en) | 2019-02-05 | 2022-09-13 | Mojo Mobility, Inc. | Inductive charging system with charging electronics physically separated from charging coil |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS3616955B1 (en) * | 1959-03-05 | 1961-09-20 | ||
| JPH03116094U (en) * | 1990-03-14 | 1991-12-02 | ||
| JPH04286398A (en) * | 1991-03-15 | 1992-10-12 | Ngk Insulators Ltd | Radio wave absorbing panel and mounting method therefor |
| JPH05280117A (en) * | 1992-02-27 | 1993-10-26 | Tokin Corp | Wave absorber |
| US5396698A (en) * | 1992-02-05 | 1995-03-14 | Texas Instruments Deutschland Gmbh | Manufacture of a flexible antenna |
| JPH07170681A (en) * | 1993-10-21 | 1995-07-04 | Auckland Uniservices Ltd | Induced power pickup device |
| JPH0851023A (en) * | 1994-08-05 | 1996-02-20 | Kanegafuchi Chem Ind Co Ltd | Flexible printed wiring board, method for increasing inductance thereof and miniature coil |
| WO1999006108A1 (en) * | 1997-08-01 | 1999-02-11 | Alfred E. Mann Foundation For Scientific Research | Implantable device with improved battery recharging and powering configuration |
| JPH11176677A (en) * | 1997-12-09 | 1999-07-02 | Tokin Corp | Cordless power station |
| JP2001167933A (en) * | 1999-12-06 | 2001-06-22 | Tdk Corp | Part for restraining electromagnetic noise |
-
2001
- 2001-07-30 JP JP2001230023A patent/JP2003045731A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS3616955B1 (en) * | 1959-03-05 | 1961-09-20 | ||
| JPH03116094U (en) * | 1990-03-14 | 1991-12-02 | ||
| JPH04286398A (en) * | 1991-03-15 | 1992-10-12 | Ngk Insulators Ltd | Radio wave absorbing panel and mounting method therefor |
| US5396698A (en) * | 1992-02-05 | 1995-03-14 | Texas Instruments Deutschland Gmbh | Manufacture of a flexible antenna |
| JPH05280117A (en) * | 1992-02-27 | 1993-10-26 | Tokin Corp | Wave absorber |
| JPH07170681A (en) * | 1993-10-21 | 1995-07-04 | Auckland Uniservices Ltd | Induced power pickup device |
| JPH0851023A (en) * | 1994-08-05 | 1996-02-20 | Kanegafuchi Chem Ind Co Ltd | Flexible printed wiring board, method for increasing inductance thereof and miniature coil |
| WO1999006108A1 (en) * | 1997-08-01 | 1999-02-11 | Alfred E. Mann Foundation For Scientific Research | Implantable device with improved battery recharging and powering configuration |
| JPH11176677A (en) * | 1997-12-09 | 1999-07-02 | Tokin Corp | Cordless power station |
| JP2001167933A (en) * | 1999-12-06 | 2001-06-22 | Tdk Corp | Part for restraining electromagnetic noise |
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