JP2000341885A - Noncontact power transmission device and manufacture thereof - Google Patents
Noncontact power transmission device and manufacture thereofInfo
- Publication number
- JP2000341885A JP2000341885A JP11146741A JP14674199A JP2000341885A JP 2000341885 A JP2000341885 A JP 2000341885A JP 11146741 A JP11146741 A JP 11146741A JP 14674199 A JP14674199 A JP 14674199A JP 2000341885 A JP2000341885 A JP 2000341885A
- Authority
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- Japan
- Prior art keywords
- coil
- power transmission
- transmission device
- contact
- disposed
- 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.)
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Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、非接触電力伝達装
置、及びその製造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a non-contact power transmission device and a method for manufacturing the same.
【０００２】[0002]
【従来の技術】図９は従来の非接触電力伝達装置の電力
伝達部を示すものである。この装置の電力伝達部の主要
部は、電力供給装置１の相互接続部１ａ内に配設される
一次側コイル３と、負荷機器２の相互接続部２ａ内に配
設される二次側コイル４とで構成され、一次側コイル３
から二次側コイル４への電磁誘導により非接触で電力伝
達を行うものである（図中Ｂは磁束を表す）。尚、一次
側コイル３は、電力供給装置１の相互接続部１ａのハウ
ジング１ｂの接触壁１ｃの内面１ｅに、二次側コイル４
は、負荷機器２の相互接続部２ａのハウジング２ｂの接
触壁２ｃの内面２ｅに、夫々密着して配設してある。2. Description of the Related Art FIG. 9 shows a power transmission section of a conventional wireless power transmission device. The main part of the power transmission unit of this device is composed of a primary coil 3 disposed in the interconnection 1a of the power supply device 1 and a secondary coil disposed in the interconnection 2a of the load device 2. 4 and the primary side coil 3
The power is transmitted in a non-contact manner by electromagnetic induction from the coil to the secondary coil 4 (B represents a magnetic flux in the figure). The primary coil 3 is provided on the inner surface 1e of the contact wall 1c of the housing 1b of the interconnecting portion 1a of the power supply device 1,
Are disposed in close contact with the inner surface 2e of the contact wall 2c of the housing 2b of the interconnection 2a of the load device 2, respectively.
【０００３】ところで、一次側コイル３から二次側コイ
ル４へ伝達される電力を増加させる方法としては、一次
側コイル３又は二次側コイル４のインダクタを増やす、
或いはコア挿入によって伝達効率を向上させる等が考え
られる。まず一次側コイル３又は二次側コイル４のイン
ダクタを増やす方法の場合、インダクタを増大させるた
めに、コイルの巻数を増やすので、コイルが大きくな
り、装置の小型化を妨げる。またコア挿入によって伝達
効率を向上させる方法の場合も、先の方法と同じく、コ
ア挿入によって装置の小型化を妨げることになる他、コ
ストアップにもつながる。Meanwhile, as a method of increasing the power transmitted from the primary coil 3 to the secondary coil 4, the inductor of the primary coil 3 or the secondary coil 4 is increased.
Alternatively, the transmission efficiency may be improved by inserting a core. First, in the case of the method of increasing the inductor of the primary coil 3 or the secondary coil 4, the number of turns of the coil is increased in order to increase the inductor, so that the coil becomes large, which hinders miniaturization of the device. Also, in the case of the method of improving the transmission efficiency by inserting the core, similarly to the above method, the insertion of the core prevents the downsizing of the device and also leads to an increase in cost.
【０００４】そこで、上記以外の方法として、一次側コ
イル３と二次側コイル４間のギャップをできるだけ小さ
くする方法が考えられる。即ち、これは、一次側コイル
３が配設される電力供給装置１の相互接続部１ａのハウ
ジング１ｂの接触壁１ｃの肉厚と、二次側コイル４が配
設される負荷機器２の相互接続部２ａのハウジング２ｂ
の接触壁２ｃの肉厚をできるだけ薄くして、一次側コイ
ル３と二次側コイル４間の距離を可能な限り小さくする
方法である。しかし、この方法では、ハウジング強度、
ハウジング成型条件、及び絶縁距離等の制限により、ハ
ウジング１ｂ、及びハウジング２ｂの接触壁１ｃ，２ｃ
の肉厚を薄くするにも限界がある。また、この方法の場
合、図１０に示すように商品のデザインによっては、曲
面部１４に一次側コイル３、及び二次側コイル４を配設
しなければならないこともある。この場合、一次側コイ
ル３と二次側コイル４間のギャップが大きくなってしま
い、一次側コイル３から二次側コイル４へ伝達される電
力を確保するのが困難になる。Therefore, as a method other than the above, a method of minimizing the gap between the primary coil 3 and the secondary coil 4 is considered. That is, this depends on the thickness of the contact wall 1c of the housing 1b of the interconnecting part 1a of the power supply device 1 in which the primary coil 3 is disposed, and the mutual thickness of the load device 2 in which the secondary coil 4 is disposed. Housing 2b of connection part 2a
In this method, the thickness of the contact wall 2c is made as thin as possible, and the distance between the primary coil 3 and the secondary coil 4 is made as small as possible. However, in this method, housing strength,
The contact walls 1c and 2c of the housing 1b and the housing 2b may vary depending on housing molding conditions and restrictions such as an insulation distance.
There is also a limit in reducing the thickness of the wall. In addition, in the case of this method, as shown in FIG. 10, depending on the design of the product, the primary side coil 3 and the secondary side coil 4 may need to be disposed on the curved surface portion 14. In this case, the gap between the primary side coil 3 and the secondary side coil 4 becomes large, and it becomes difficult to secure the power transmitted from the primary side coil 3 to the secondary side coil 4.
【０００５】[0005]
【発明が解決しようとする課題】本発明は上記の点に鑑
みて為されたものであり、一次側コイルと二次側コイル
間のギャップを極端に小さくすることができ、一次側コ
イルから二次側コイルへ伝達される電力を増大させるこ
とができる非接触電力伝達装置を提供することを目的と
している。SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and it is possible to extremely reduce a gap between a primary coil and a secondary coil. It is an object of the present invention to provide a non-contact power transmission device capable of increasing the power transmitted to a secondary coil.
【０００６】[0006]
【課題を解決するための手段】本発明の請求項１に係る
非接触電力伝達装置は、電力供給装置１側に一次側コイ
ル３を、負荷機器２側に二次側コイル４を配設し、一次
側コイル３から二次側コイル４への電磁誘導により電力
伝達する非接触電力伝達装置において、一次側コイル３
又は二次側コイル４を平面コイル５に形成し、該平面コ
イル５を電力供給装置１又は負荷機器２の相互接続部１
ａ（２ａ）の接触壁１ｃ（２ｃ）に配設することを特徴
とするものである。According to a first aspect of the present invention, there is provided a non-contact power transmission device in which a primary coil 3 is disposed on a power supply device 1 side and a secondary coil 4 is disposed on a load device 2 side. A non-contact power transmission device for transmitting power by electromagnetic induction from a primary coil 3 to a secondary coil 4;
Alternatively, the secondary coil 4 is formed on the plane coil 5, and the plane coil 5 is connected to the interconnection 1 of the power supply device 1 or the load device 2.
a (2a) is disposed on the contact wall 1c (2c).
【０００７】また本発明の請求項２に係る非接触電力伝
達装置は、請求項１の構成に加えて、平面コイル５に形
成した一次側コイル３又は二次側コイル４のいずれかを
電力供給装置１又は負荷機器２の相互接続部１ａ（２
ａ）の接触壁１ｃ（２ｃ）の外面１ｄ（２ｄ）に配設す
ることを特徴とするものである。According to a second aspect of the present invention, in addition to the configuration of the first aspect, the non-contact power transmission device supplies power to either the primary side coil 3 or the secondary side coil 4 formed on the planar coil 5. Interconnection unit 1a (2
It is characterized in that it is disposed on the outer surface 1d (2d) of the contact wall 1c (2c) in a).
【０００８】また本発明の請求項３に係る非接触電力伝
達装置は、請求項１の構成に加えて、平面コイル５に形
成した一次側コイル３又は二次側コイル４のいずれかを
電力供給装置１又は負荷機器２の相互接続部１ａ（２
ａ）の接触壁１ｃ（２ｃ）の外面１ｄ（２ｄ）と内面１
ｅ（２ｅ）の両面に配設し、且つ外面１ｄ（２ｄ）と内
面１ｅ（２ｅ）の両面に配設した両コイル３，３（４，
４）を電気的に接続することを特徴とするものである。According to a third aspect of the present invention, in addition to the configuration of the first aspect, in addition to the configuration of the first aspect, power is supplied to either the primary coil 3 or the secondary coil 4 formed on the planar coil 5. Interconnection unit 1a (2
The outer surface 1d (2d) and the inner surface 1 of the contact wall 1c (2c) in FIG.
e (2e), and both coils 3, 3 (4, 4) disposed on both outer surface 1d (2d) and inner surface 1e (2e).
4) is electrically connected.
【０００９】また本発明の請求項４に係る非接触電力伝
達装置は、請求項２又は３のいずれかの構成に加えて、
平面コイル５を保護するための防護シール６で平面コイ
ル５の露出部５ａを覆うことを特徴とするものである。According to a fourth aspect of the present invention, there is provided a non-contact power transmission device according to the second aspect.
The exposed portion 5a of the planar coil 5 is covered with a protective seal 6 for protecting the planar coil 5.
【００１０】また本発明の請求項５に係る非接触電力伝
達装置は、請求項４の構成に加えて、前記防護シール６
の中心部に磁気部７を設けたことを特徴とするものであ
る。According to a fifth aspect of the present invention, in addition to the configuration of the fourth aspect, the non-contact power transmission device further comprises the protective seal 6.
Is provided with a magnetic portion 7 at the center thereof.
【００１１】また本発明の請求項６に係る非接触電力伝
達装置は、請求項１乃至４のいずれかの構成に加えて、
一次側コイル３から発生する磁束Ｂと交差する場所に二
次側コイル４を複数配設したことを特徴とするものであ
る。According to a sixth aspect of the present invention, there is provided a non-contact power transmission device according to any one of the first to fourth aspects.
It is characterized in that a plurality of secondary coils 4 are arranged at locations where they intersect with a magnetic flux B generated from the primary coil 3.
【００１２】また本発明の請求項７に係る非接触電力伝
達装置の製造方法は、上記平面コイル５をホットスタン
ピングによって電力供給装置１又は負荷機器２の相互接
続部１ａ（２ａ）の接触壁１ｃ（２ｃ）に配設すること
を特徴とするものである。According to a seventh aspect of the present invention, in the method for manufacturing a non-contact power transmission device, the planar coil 5 is hot-stamped to contact the power supply device 1 or the contact wall 1c of the interconnecting portion 1a (2a) of the load device 2. (2c).
【００１３】[0013]
【発明の実施の形態】本発明の実施の形態を図１乃至図
８に基づいて説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS.
【００１４】本発明の実施の形態の一例を図１乃至図３
に示す。図１は本発明の非接触電力伝達装置の電力伝達
部を示すものである。非接触電力伝達装置の電力伝達部
は、電力供給装置１の相互接続部１ａと負荷機器２の相
互接続部２ａから構成される。電力供給装置１の相互接
続部１ａと、負荷機器２の相互接続部２ａは夫々、有底
筒状のハウジング１ｂとハウジング２ｂで外殻が形成さ
れ、ハウジング１ｂの接触壁１ｃの内面１ｅには一次側
コイル３が、ハウジング２ｂの接触壁２ｃの内面２ｅに
は二次側コイル４が、夫々ハウジング１ｂ、ハウジング
２ｂの中心軸にコイルの巻き軸が一致するように配設さ
れる。尚、この例では、一次側コイル３には一般に使用
される筒状コイルを用い、一方の二次側コイル４には図
２に示すような銅箔を渦巻き状に形成した平面コイル５
を用いる。またこの平面コイル５の形成、並びにハウジ
ング２ｂの接触壁２ｃの内面２ｅへの配設はホットスタ
ンピングによって行う。FIGS. 1 to 3 show an example of an embodiment of the present invention.
Shown in FIG. 1 shows a power transmission unit of the wireless power transmission device of the present invention. The power transmission unit of the wireless power transmission device includes an interconnection 1a of the power supply device 1 and an interconnection 2a of the load device 2. The interconnecting portion 1a of the power supply device 1 and the interconnecting portion 2a of the load device 2 have outer shells formed of a bottomed cylindrical housing 1b and a housing 2b, respectively, and are provided on an inner surface 1e of a contact wall 1c of the housing 1b. The primary side coil 3 is disposed on the inner surface 2e of the contact wall 2c of the housing 2b, and the secondary side coil 4 is disposed such that the winding axis of the coil coincides with the central axis of the housing 1b and the housing 2b. In this example, a generally used cylindrical coil is used for the primary coil 3, and a planar coil 5 in which a copper foil is spirally formed as shown in FIG.
Is used. The formation of the planar coil 5 and the arrangement of the contact wall 2c of the housing 2b on the inner surface 2e are performed by hot stamping.
【００１５】次に本発明の非接触電力伝達装置の動作説
明をする。図３はこの非接触電力伝達装置の回路図を示
すものであり、図３（ａ）が電力供給装置１の回路図、
図３（ｂ）が負荷機器２の回路図である。まず電力供給
装置１において、交流電源８から供給される交流電流を
高周波発生回路９によって高周波電流に変換し、ハウジ
ング１ｂの接触壁１ｃの内面１ｅに配設した一次側コイ
ル３に高周波電流を流し、図１に示すような磁束Ｂを発
生させる。次に負荷機器２において、ハウジング２ｂの
接触壁２ｃの内面２ｅに配設した平面コイル５である二
次側コイル４に前記磁束Ｂが交差することによって、電
磁誘導により二次側コイル４に起電力が発生し、整流ダ
イオード１０により整流した後、電池１１に電流を供給
し、充電を行う。こうして電力を供給された負荷機器２
は負荷機器２に配設した電源スイッチ１３をオンにする
ことによって負荷１２を駆動させることができる。Next, the operation of the wireless power transmission device of the present invention will be described. FIG. 3 is a circuit diagram of the non-contact power transmission device. FIG. 3A is a circuit diagram of the power supply device 1, and FIG.
FIG. 3B is a circuit diagram of the load device 2. First, in the power supply device 1, an AC current supplied from an AC power supply 8 is converted into a high-frequency current by a high-frequency generation circuit 9, and the high-frequency current is supplied to the primary coil 3 disposed on the inner surface 1e of the contact wall 1c of the housing 1b. , A magnetic flux B as shown in FIG. Next, in the load device 2, the magnetic flux B intersects with the secondary coil 4, which is a planar coil 5 disposed on the inner surface 2e of the contact wall 2c of the housing 2b, so that the secondary coil 4 is generated by electromagnetic induction. After power is generated and rectified by the rectifier diode 10, a current is supplied to the battery 11 to perform charging. Load equipment 2 supplied with power in this way
Can turn on the load 12 by turning on the power switch 13 disposed on the load device 2.
【００１６】上記のように本発明の非接触電力伝達装置
は、二次側コイル４を平面コイル５に形成し、平面コイ
ル５を負荷機器２の相互接続部２ａのハウジング２ｂの
接触壁２ｃの内面２ｅに配設することで、平面コイル５
である二次側コイル４の全部分と相手側コイルである一
次側コイル３間の距離が短くなり、一次側コイル３から
発生する磁束Ｂのうち二次側コイル４に交差する磁束Ｂ
の数を多くすることができるので、大きな起電力が得ら
れ、一次側コイル３から二次側コイル４へ伝達される電
力を増大させることができる。また逆に負荷機器２側に
一定の電力を得ようとする場合、従来のものと比べて、
一次側コイル３又は二次側コイル４のインダクタが小さ
くて済むため、部品の小型化、及びコストダウンを図る
ことができる。また平面コイル５であるため、縦方向の
スペースを取らないので、装置を小型化、及び薄型化で
きる。また上記平面コイル５をホットスタンピングによ
って負荷機器２の相互接続部２ａのハウジング２ｂの接
触壁２ｃに配設することで、非接触電力伝達装置の電力
伝達部を低コストで製造することが可能となる。またホ
ットスタンピングにより、ハウジングの曲面部にも平面
コイル５を配設できるため、商品のハウジング形状の自
由度が増す。As described above, in the non-contact power transmission device of the present invention, the secondary coil 4 is formed on the planar coil 5 and the planar coil 5 is formed on the contact wall 2 c of the housing 2 b of the interconnection 2 a of the load device 2. By disposing on the inner surface 2e, the planar coil 5
, The distance between the entire portion of the secondary coil 4 and the primary coil 3, which is the partner coil, becomes shorter, and the magnetic flux B crossing the secondary coil 4 among the magnetic fluxes B generated from the primary coil 3.
Can be increased, a large electromotive force can be obtained, and the power transmitted from the primary coil 3 to the secondary coil 4 can be increased. Conversely, when trying to obtain constant power on the load device 2 side, compared to the conventional one,
Since the inductor of the primary side coil 3 or the secondary side coil 4 can be small, the size of components can be reduced and the cost can be reduced. Further, since the planar coil 5 does not take up space in the vertical direction, the device can be reduced in size and thickness. In addition, by disposing the planar coil 5 on the contact wall 2c of the housing 2b of the interconnection 2a of the load device 2 by hot stamping, it is possible to manufacture the power transmission unit of the non-contact power transmission device at low cost. Become. Further, since the flat coil 5 can be disposed on the curved surface of the housing by hot stamping, the degree of freedom of the housing shape of the product is increased.
【００１７】次に本発明の実施の形態の他の例を図４に
示す。この非接触電力伝達装置は、平面コイル５である
二次側コイル４の配設を除く他の構成は前記例と同じで
あり、この例では二次側コイル４をハウジング２ｂの接
触壁２ｃに外面２ｄと面一となるように埋設する。この
ような構成とすることで、一次側コイル３と二次側コイ
ル４間のギャップが、ハウジング１ｂの接触壁１ｃの厚
みのみとなり、短くなるため、一次側コイル３から二次
側コイル４へ伝達される電力をより増大させることがで
きる。Next, another example of the embodiment of the present invention is shown in FIG. This non-contact power transmission device has the same configuration as that of the above example except for the arrangement of the secondary coil 4 which is the planar coil 5, and in this example, the secondary coil 4 is attached to the contact wall 2c of the housing 2b. It is buried so as to be flush with the outer surface 2d. With such a configuration, the gap between the primary coil 3 and the secondary coil 4 becomes only the thickness of the contact wall 1c of the housing 1b and becomes shorter. The transmitted power can be further increased.
【００１８】次に本発明の実施の形態の他の例を図５に
示す。この非接触電力伝達装置は、平面コイル５である
二次側コイル４の配設を除く他の構成は第１の例と同じ
であり、この例では二次側コイル４として２つの平面コ
イル５，５をハウジング２ｂの接触壁２ｃの外面２ｄと
内面２ｅの両面に配設し、且つ外面２ｄと内面２ｅの両
面に配設した両コイル５，５を電気的接続部材１５を介
して接続する。尚、外面２ｄと内面２ｅの両面に配設し
た両コイル５，５は夫々、接触壁２ｃの外面２ｄ、及び
内面２ｅと面一になるように埋設する。このような構成
とすることで、一次側コイル３と二次側コイル４間のギ
ャップが、ハウジング１ｂの接触壁１ｃの厚みのみとな
り、短くなるため、一次側コイル３から二次側コイル４
へ伝達される電力を増大させることができ、加えてハウ
ジング２ｂの接触壁２ｃの外面２ｄと内面２ｅの両面に
配設した両コイル５，５を接続することにより、コイル
の巻数が増え、インダクタが増大するため、一次側コイ
ル３から二次側コイル４へ伝達される電力をさらに増大
させることができる。Next, another example of the embodiment of the present invention is shown in FIG. This non-contact power transmission device has the same configuration as that of the first example except for the arrangement of the secondary coil 4 which is the planar coil 5, and in this example, two planar coils 5 are used as the secondary coil 4. , 5 are disposed on both the outer surface 2d and the inner surface 2e of the contact wall 2c of the housing 2b, and the coils 5, 5 disposed on both the outer surface 2d and the inner surface 2e are connected via an electrical connection member 15. . The coils 5, 5 disposed on both the outer surface 2d and the inner surface 2e are embedded so as to be flush with the outer surface 2d and the inner surface 2e of the contact wall 2c, respectively. With such a configuration, the gap between the primary coil 3 and the secondary coil 4 is reduced only by the thickness of the contact wall 1c of the housing 1b, so that the gap between the primary coil 3 and the secondary coil 4 is reduced.
The power transmitted to the contact wall 2c of the housing 2b can be increased. In addition, by connecting both the coils 5, 5 disposed on both the outer surface 2d and the inner surface 2e of the contact wall 2c of the housing 2b, the number of turns of the coil is increased and the inductor is increased. Therefore, the power transmitted from the primary coil 3 to the secondary coil 4 can be further increased.
【００１９】次に本発明の実施の形態の他の例を図６に
示す。この非接触電力伝達装置は、第２の例の構成にお
いて、ハウジング２ｂの接触壁２ｃの外面２ｄに面一に
埋設した平面コイル５を保護するために、防護シール６
で平面コイル５の露出部５ａを覆ったものである。この
ような構成とすることで、負荷機器２の落下、転倒、及
び電力供給装置１との着脱による二次側コイル４のコイ
ルの断線又は劣化を防止することができる。Next, another example of the embodiment of the present invention is shown in FIG. This non-contact power transmission device has a protective seal 6 to protect the planar coil 5 buried flush with the outer surface 2d of the contact wall 2c of the housing 2b in the configuration of the second example.
Cover the exposed portion 5a of the planar coil 5. With such a configuration, it is possible to prevent disconnection or deterioration of the coil of the secondary coil 4 due to dropping and falling of the load device 2 and detachment from the power supply device 1.
【００２０】次に本発明の実施の形態の他の例を図７に
示す。この非接触電力伝達装置は、前記例の構成におい
て、防護シール６の中心部に磁気部７を設けたものであ
る。尚、磁気部７の中心は一次側コイル３と、二次側コ
イル４の巻き軸と同一直線上に位置する。このような構
成とすることで、磁束Ｂが防護シール６の中心部の磁気
部７に集束され、二次側コイル４を交差する磁束Ｂの数
が増加するため、一次側コイル３から二次側コイル４へ
伝達される電力の伝達効率を上げることができる。Next, another example of the embodiment of the present invention is shown in FIG. This non-contact power transmission device has a configuration in which the magnetic portion 7 is provided at the center of the protective seal 6 in the configuration of the above example. The center of the magnetic part 7 is located on the same straight line as the winding axes of the primary coil 3 and the secondary coil 4. With such a configuration, the magnetic flux B is focused on the magnetic portion 7 at the center of the protective seal 6 and the number of magnetic fluxes B crossing the secondary coil 4 increases. The transmission efficiency of the power transmitted to the side coil 4 can be increased.
【００２１】次に本発明の実施の形態の他の例を図８に
示す。この非接触電力伝達装置は、平面コイル５である
二次側コイル４の配設を除く他の構成は第２の例と同じ
であり、この例では一次側コイル３から発生する磁束Ｂ
と交差する場所に二次側コイル４を複数配設する。この
ように１つの二次側コイル４の場合では交差しない磁束
Ｂも二次側コイル４を前記磁束Ｂと交差するように複数
設けることにより、二次側コイル４に交差する磁束Ｂの
数を増やすことができるので、大きな起電力が得られ、
一次側コイル３から二次側コイル４へ伝達される電力を
より増大させることができる。Next, another example of the embodiment of the present invention is shown in FIG. This non-contact power transmission device has the same configuration as that of the second example except for the arrangement of the secondary coil 4 which is the planar coil 5, and in this example, the magnetic flux B generated from the primary coil 3
A plurality of secondary side coils 4 are disposed at a location where the secondary coil 4 intersects. As described above, by providing a plurality of the magnetic fluxes B that do not intersect with one secondary coil 4 so as to intersect the magnetic flux B, the number of the magnetic fluxes B intersecting the secondary coil 4 can be reduced. Can increase the amount of electromotive force,
The power transmitted from the primary coil 3 to the secondary coil 4 can be further increased.
【００２２】[0022]
【発明の効果】本発明の請求項１記載の発明にあって
は、電力供給装置側に一次側コイルを、負荷機器側に二
次側コイルを配設し、一次側コイルから二次側コイルへ
の電磁誘導により電力伝達する非接触電力伝達装置にお
いて、一次側コイル又は二次側コイルを平面コイルに形
成し、該平面コイルを電力供給装置又は負荷機器の相互
接続部の接触壁に配設することで、一次側コイル又は二
次側コイルが平面コイルとなっているため、該平面コイ
ルの全部分と相手側コイル間の距離が短くなり、一次側
コイルから発生する磁束のうち二次側コイルに交差する
磁束の数を多くすることができるので、大きな起電力が
得られ、一次側コイルから二次側コイルへ伝達される電
力を増大させることができる。また逆に負荷機器側に一
定の電力を得ようとする場合、従来のものと比べて、一
次側コイル又は二次側コイルのインダクタが小さくて済
むため、部品の小型化、及びコストダウンを図ることが
できる。また平面コイルであるため、縦方向のスペース
を取らないので、装置を小型化、及び薄型化できる。According to the first aspect of the present invention, the primary coil is disposed on the power supply device side, the secondary coil is disposed on the load equipment side, and the secondary coil is disposed from the primary coil. In a non-contact power transmission device that transmits power by electromagnetic induction to a power supply device, a primary coil or a secondary coil is formed in a planar coil, and the planar coil is disposed on a contact wall of an interconnecting portion of a power supply device or a load device. By doing so, since the primary coil or the secondary coil is a planar coil, the distance between the entire part of the planar coil and the partner coil is reduced, and the secondary side of the magnetic flux generated from the primary coil is reduced. Since the number of magnetic fluxes crossing the coil can be increased, a large electromotive force can be obtained, and the power transmitted from the primary coil to the secondary coil can be increased. Conversely, when trying to obtain a certain amount of power on the load device side, the inductor of the primary coil or the secondary coil can be smaller than that of the conventional device, so that miniaturization of parts and cost reduction are achieved. be able to. Further, since the coil is a planar coil, it does not take up space in the vertical direction, so that the device can be reduced in size and thickness.
【００２３】また本発明の請求項２記載の発明にあって
は、請求項１記載の発明の効果に加えて、平面コイルに
形成した一次側コイル又は二次側コイルのいずれかを電
力供給装置又は負荷機器の相互接続部の接触壁の外面に
配設することで、一次側コイルと二次側コイル間のギャ
ップが、電力供給装置又は負荷機器のいずれかの相互接
続部の接触壁の厚みのみとなり、短くなるため、一次側
コイルから二次側コイルへ伝達される電力をより増大さ
せることができる。According to a second aspect of the present invention, in addition to the effects of the first aspect, either the primary side coil or the secondary side coil formed in the planar coil is supplied to the power supply device. Or, by arranging on the outer surface of the contact wall of the interconnection of the load device, the gap between the primary coil and the secondary coil increases the thickness of the contact wall of the interconnection of either the power supply device or the load device. Only the power is shortened, so that the power transmitted from the primary coil to the secondary coil can be further increased.
【００２４】また本発明の請求項３記載の発明にあって
は、請求項１記載の発明の効果に加えて、平面コイルに
形成した一次側コイル又は二次側コイルのいずれかを電
力供給装置又は負荷機器の相互接続部の接触壁の外面と
内面の両面に配設し、且つ外面と内面の両面に配設した
両コイルを電気的に接続することで、一次側コイルと二
次側コイル間のギャップが、電力供給装置又は負荷機器
のいずれかの相互接続部の接触壁の厚みのみとなり、短
くなるため、一次側コイルから二次側コイルへ伝達され
る電力を増大させることができ、加えて電力供給装置又
は負荷機器の相互接続部の接触壁の外面と内面の両面に
配設した両コイルを接続することにより、コイルの巻数
が増え、インダクタが増大するため、一次側コイルから
二次側コイルへ伝達される電力をさらに増大させること
ができる。According to a third aspect of the present invention, in addition to the effect of the first aspect, either the primary side coil or the secondary side coil formed in the planar coil is supplied to the power supply device. Alternatively, the primary coil and the secondary coil are disposed on both the outer surface and the inner surface of the contact wall of the interconnection part of the load device, and both coils disposed on the outer surface and the inner surface are electrically connected. Since the gap between the power supply device and the thickness of the contact wall of any of the interconnecting parts of the load device is reduced and shortened, the power transmitted from the primary coil to the secondary coil can be increased, In addition, by connecting both coils disposed on both the outer surface and the inner surface of the contact wall of the interconnection part of the power supply device or the load device, the number of turns of the coil increases and the number of inductors increases. Transfer to the next coil Power can be further increased.
【００２５】また本発明の請求項４記載の発明にあって
は、請求項２又は３のいずれかに記載の発明の効果に加
えて、平面コイルを保護するための防護シールで平面コ
イルの露出部を覆うことで、負荷機器の落下、転倒、及
び電力供給装置との着脱による一次側コイル又は二次側
コイルのいずれかのコイルの断線又は劣化を防止するこ
とができる。According to a fourth aspect of the present invention, in addition to the effects of the second or third aspect, the flat coil is exposed by a protective seal for protecting the flat coil. By covering the portion, it is possible to prevent disconnection or deterioration of either the primary side coil or the secondary side coil due to dropping and falling of the load device and attachment / detachment with the power supply device.
【００２６】また本発明の請求項５記載の発明にあって
は、請求項４記載の発明の効果に加えて、前記防護シー
ルの中心部に磁気部を設けたことで、磁束が防護シール
の中心部の磁気部に集束され、二次側コイルを交差する
磁束の数が増加するため、一次側コイルから二次側コイ
ルへ伝達される電力の伝達効率を上げることができる。According to a fifth aspect of the present invention, in addition to the effect of the fourth aspect, a magnetic portion is provided at the center of the protective seal, so that a magnetic flux is generated by the protective seal. Since the number of magnetic fluxes that are focused on the central magnetic portion and cross the secondary coil increases, the transmission efficiency of power transmitted from the primary coil to the secondary coil can be increased.
【００２７】また本発明の請求項６記載の発明にあって
は、請求項１乃至４のいずれかに記載の発明の効果に加
えて、一次側コイルから発生する磁束と交差する場所に
二次側コイルを複数配設したことで、１つの二次側コイ
ルの場合では交差しない磁束も二次側コイルを前記磁束
と交差するように複数設けることにより、二次側コイル
に交差する磁束の数を増やすことができるので、大きな
起電力が得られ、一次側コイルから二次側コイルへ伝達
される電力をより増大させることができる。According to the invention of claim 6 of the present invention, in addition to the effects of the invention of any one of claims 1 to 4, a secondary coil is provided at a place where the magnetic flux generated from the primary coil intersects. By arranging a plurality of side coils, the number of magnetic fluxes that intersect with the secondary coil is also provided by providing a plurality of secondary coils such that the magnetic flux that does not intersect in the case of one secondary coil intersects with the magnetic flux. Can be increased, a large electromotive force can be obtained, and the power transmitted from the primary coil to the secondary coil can be further increased.
【００２８】また本発明の請求項７記載の発明にあって
は、上記平面コイルをホットスタンピングによって電力
供給装置又は負荷機器の相互接続部の接触壁に配設する
ことで、非接触電力伝達装置の電力伝達部を低コストで
製造することが可能となる。またホットスタンピングに
より、ハウジングの曲面部にも平面コイルを配設できる
ため、商品のハウジング形状の自由度が増す。In the invention according to claim 7 of the present invention, the planar coil is disposed on a contact wall of an interconnecting portion of a power supply device or a load device by hot stamping, so that a non-contact power transmission device is provided. Can be manufactured at low cost. In addition, since the flat coil can be arranged on the curved surface of the housing by hot stamping, the degree of freedom of the housing shape of the product is increased.
【図１】本発明の実施の形態の一例を示すものであり、
非接触電力伝達装置の電力伝達部の断面図である。FIG. 1 shows an example of an embodiment of the present invention,
It is sectional drawing of the electric power transmission part of a non-contact electric power transmission device.
【図２】同上の（ａ）は負荷機器の相互接続部の接触壁
近傍の上面図、（ｂ）はＡ−Ａ線断面図である。FIG. 2A is a top view of the vicinity of a contact wall of an interconnection portion of a load device, and FIG. 2B is a cross-sectional view taken along line AA.
【図３】同上の（ａ）は電力供給装置の回路図、（ｂ）
は負荷機器の回路図である。FIG. 3A is a circuit diagram of a power supply device, and FIG.
Is a circuit diagram of a load device.
【図４】本発明の実施の形態の他の例を示すものであ
り、非接触電力伝達装置の電力伝達部の断面図である。FIG. 4 illustrates another example of the embodiment of the present invention, and is a cross-sectional view of a power transmission unit of a non-contact power transmission device.
【図５】本発明の実施の形態の他の例を示すものであ
り、非接触電力伝達装置の電力伝達部の断面図である。FIG. 5 illustrates another example of the embodiment of the present invention, and is a cross-sectional view of a power transmission unit of a non-contact power transmission device.
【図６】本発明の実施の形態の他の例を示すものであ
り、非接触電力伝達装置の電力伝達部の断面図である。FIG. 6 shows another example of the embodiment of the present invention, and is a cross-sectional view of a power transmission unit of a non-contact power transmission device.
【図７】本発明の実施の形態の他の例を示すものであ
り、非接触電力伝達装置の電力伝達部の断面図である。FIG. 7 shows another example of the embodiment of the present invention, and is a cross-sectional view of a power transmission unit of a non-contact power transmission device.
【図８】本発明の実施の形態の他の例を示すものであ
り、非接触電力伝達装置の電力伝達部の断面図である。FIG. 8 shows another example of the embodiment of the present invention, and is a cross-sectional view of a power transmission unit of a non-contact power transmission device.
【図９】従来例を示すものであり、非接触電力伝達装置
の電力伝達部の断面図である。FIG. 9 illustrates a conventional example, and is a cross-sectional view of a power transmission unit of a non-contact power transmission device.
【図１０】従来例を示すものであり、非接触電力伝達装
置の電力伝達部の断面図である。FIG. 10 illustrates a conventional example, and is a cross-sectional view of a power transmission unit of a wireless power transmission device.
１ 電力供給装置 １ａ 相互接続部 １ｃ 接触壁 １ｄ 外面 １ｅ 内面 ２ 負荷機器 ２ａ 相互接続部 ２ｃ 接触壁 ２ｄ 外面 ２ｅ 内面 ３ 一次側コイル ４ 二次側コイル ５ 平面コイル ５ａ 露出部 ６ 防護シール ７ 磁気部 Ｂ 磁束 DESCRIPTION OF SYMBOLS 1 Power supply apparatus 1a Interconnection part 1c Contact wall 1d Outer surface 1e Inner surface 2 Load equipment 2a Interconnector 2c Contact wall 2d Outer surface 2e Inner surface 3 Primary side coil 4 Secondary side coil 5 Planar coil 5a Exposed part 6 Protective seal 7 Magnetic part B magnetic flux
Claims (7)
機器側に二次側コイルを配設し、一次側コイルから二次
側コイルへの電磁誘導により電力伝達する非接触電力伝
達装置において、一次側コイル又は二次側コイルを平面
コイルに形成し、該平面コイルを電力供給装置又は負荷
機器の相互接続部の接触壁に配設することを特徴とする
非接触電力伝達装置。1. A non-contact power transmission device in which a primary coil is disposed on a power supply device side, a secondary coil is disposed on a load device side, and power is transmitted by electromagnetic induction from the primary coil to the secondary coil. A non-contact power transmission device, wherein a primary coil or a secondary coil is formed in a planar coil, and the planar coil is disposed on a contact wall of an interconnecting portion of a power supply device or a load device.
二次側コイルのいずれかを電力供給装置又は負荷機器の
相互接続部の接触壁の外面に配設することを特徴とする
請求項１記載の非接触電力伝達装置。2. A power supply device or a load device, wherein one of a primary coil and a secondary coil formed on a planar coil is disposed on an outer surface of a contact wall of an interconnecting portion of the power supply device or the load device. Non-contact power transmission device.
二次側コイルのいずれかを電力供給装置又は負荷機器の
相互接続部の接触壁の外面と内面の両面に配設し、且つ
外面と内面の両面に配設した両コイルを電気的に接続す
ることを特徴とする請求項１記載の非接触電力伝達装
置。3. A primary coil or a secondary coil formed in a planar coil is disposed on both the outer surface and the inner surface of a contact wall of an interconnecting portion of a power supply device or a load device, and the outer surface and the inner surface are provided. The non-contact power transmission device according to claim 1, wherein both coils disposed on both surfaces of the non-contact power transmission device are electrically connected.
で平面コイルの露出部を覆うことを特徴とする請求項２
又は３のいずれかに記載の非接触電力伝達装置。4. The exposed portion of the planar coil is covered with a protective seal for protecting the planar coil.
Or the non-contact power transmission device according to any one of 3.
たことを特徴とする請求項４記載の非接触電力伝達装
置。5. The non-contact power transmission device according to claim 4, wherein a magnetic portion is provided at a central portion of the protective seal.
る場所に二次側コイルを複数配設したことを特徴とする
請求項１乃至４のいずれかに記載の非接触電力伝達装
置。6. The non-contact power transmission device according to claim 1, wherein a plurality of secondary coils are provided at locations intersecting with a magnetic flux generated from the primary coils.
よって電力供給装置又は負荷機器の相互接続部の接触壁
に配設することを特徴とする非接触電力伝達装置の製造
方法。7. A method for manufacturing a non-contact power transmission device, wherein the planar coil is disposed on a contact wall of an interconnecting portion of a power supply device or a load device by hot stamping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11146741A JP2000341885A (en) | 1999-05-26 | 1999-05-26 | Noncontact power transmission device and manufacture thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11146741A JP2000341885A (en) | 1999-05-26 | 1999-05-26 | Noncontact power transmission device and manufacture thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000341885A true JP2000341885A (en) | 2000-12-08 |
Family
ID=15414554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11146741A Pending JP2000341885A (en) | 1999-05-26 | 1999-05-26 | Noncontact power transmission device and manufacture thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000341885A (en) |
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