JP2009005470A - Coil device for non-contact power transmission - Google Patents

Coil device for non-contact power transmission Download PDF

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Publication number
JP2009005470A
JP2009005470A JP2007163044A JP2007163044A JP2009005470A JP 2009005470 A JP2009005470 A JP 2009005470A JP 2007163044 A JP2007163044 A JP 2007163044A JP 2007163044 A JP2007163044 A JP 2007163044A JP 2009005470 A JP2009005470 A JP 2009005470A
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Japan
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coil
thin plate
power transmission
plate member
conductive portion
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JP2007163044A
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Japanese (ja)
Inventor
Hideki Tamura
秀樹 田村
Atsushi Isaka
篤 井坂
Shosuke Akisada
昭輔 秋定
Yoshinori Sainomoto
良典 才ノ本
Masayuki Suzuki
誠之 鈴木
Koichi Yoshioka
浩一 吉岡
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Panasonic Electric Works Co Ltd
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Panasonic Electric Works Co Ltd
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Priority to JP2007163044A priority Critical patent/JP2009005470A/en
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Pending legal-status Critical Current

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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Abstract

<P>PROBLEM TO BE SOLVED: To provide a coil device which can be easily thinned and connected to the other component. <P>SOLUTION: The coil device is provided with a secondary side power receiving coil 2 for receiving power from a primary-side power transmission coil, wherein the secondary-side power receiving coil 2 is disposed on one surface of a thin plate member 1 having a conductive portion 3 formed so as to penetrate front and rear surfaces and connected to the conductive portion. Since the conductive portion 3 is exposed on the surface opposite to one surface of the thin plate member 1 where the coil 2 is disposed, the coil 2 can be connected to the other component on one of the surfaces of the thin plate member 1. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、非接触で電力伝送を行うための非接触電力伝送用コイル装置、殊に受電側の構造に関するものである。   The present invention relates to a coil device for non-contact power transmission for performing power transmission in a non-contact manner, and more particularly to a structure on the power receiving side.

一次側送電用コイルと二次側受電用コイルとの間でトランスを構成して、両コイル間の電磁誘導作用を利用して非接触電力伝送を行うものが、接点部分の露出がないために接点部分の劣化を気にしなくて良いことや防水性の確保が容易になること、電力送電側機器に対する電力受電側機器の着脱を容易に行うことができるなどの点からコードレス電話機、シェーバー、歯ブラシなど様々な商品に用いられている。   Because a transformer is configured between the primary side power transmission coil and the secondary side power reception coil and non-contact power transmission is performed using the electromagnetic induction action between the two coils, the contact portion is not exposed. Cordless telephones, shavers, toothbrushes from the point that it is not necessary to worry about deterioration of the contact part, it is easy to ensure waterproofness, and the power receiving device can be easily attached to and detached from the power transmitting device. It is used for various products.

この種の用途において、特に携帯電話機の内蔵電池を充電するために用いる場合、特に受電側の構成を薄型に形成することが要求されており、このような要求に応えるものとして、特開平１１−９７２６３号公報（特許文献１）に示されているように、渦巻き型の二次側受電用のコイルを磁性材からなる薄板部材の一面に配設したものがある。   In this type of application, particularly when used to charge a built-in battery of a mobile phone, it is particularly required that the power receiving side be formed thinly. As disclosed in Japanese Patent No. 97263 (Patent Document 1), there is a coil-type secondary-side power receiving coil disposed on one surface of a thin plate member made of a magnetic material.

このような形態のものでは、コイルが極細線で形成されることから、コイルの端末をそのまま外部に導出するのは困難である。   In such a configuration, since the coil is formed of extra fine wires, it is difficult to lead out the terminal of the coil as it is.

このために通常は薄板部材のコイルが配された一面側に端子部を形成し、該端子部を通じて外部への接続を行うことになるが、上記コイルは受電側機器の外殻の内面に近接して配置されていることが非接触電力伝送における伝送効率の点において必須となるのに対し、上記端子部が薄板部材のコイルと同じ側に位置するということは、この端子部は外殻内面と薄板部材との間の微小間隔で対向している隙間に位置することになり、受電側機器内の他の部品との電気的接続が困難になる。携帯電話への搭載時には、着脱自在とされる電池カバーの内面側にコイルが位置する配置とならざるを得ないことを考えると、尚更である。
特開平１１−９７２６３号公報 For this reason, normally, a terminal part is formed on one surface side where the coil of the thin plate member is arranged, and connection to the outside is made through the terminal part. It is essential in terms of transmission efficiency in contactless power transmission that the terminal portion is located on the same side as the coil of the thin plate member. And the thin plate member are positioned in a gap facing each other at a minute interval, and electrical connection with other components in the power receiving side device becomes difficult. This is especially true when considering that the coil must be placed on the inner surface side of the battery cover that is detachable when mounted on a mobile phone.
JP 11-97263 A

本発明は上記の従来の問題点に鑑みて発明したものであって、薄型化への対応が容易であるとともに他部品との接続も容易である非接触電力伝送用コイル装置を提供することを課題とするものである。   The present invention has been invented in view of the above-described conventional problems, and provides a non-contact power transmission coil device that can be easily reduced in thickness and can be easily connected to other components. It is to be an issue.

上記課題を解決するために本発明に係る非接触電力伝送用コイル装置は、一次側送電用コイルからの電力を受けるための二次側受電用のコイルを備えたものであって、表裏に貫通して設けられた導電部を備える薄板部材の一面に上記二次側受電用コイルが配設されて上記導電部に接続されていることに特徴を有している。   In order to solve the above problems, a coil device for non-contact power transmission according to the present invention is provided with a secondary-side power receiving coil for receiving power from a primary-side power transmission coil, and penetrates through on both sides. The secondary-side power receiving coil is disposed on one surface of a thin plate member having a conductive portion provided as described above, and is connected to the conductive portion.

薄板部材のコイルが配された一面とは反対側の面にも導電部を露出させることで、薄板部材の表裏いずれの面でも他の部品との電気的接続を行えるようにしたものである。   By exposing the conductive portion on the surface opposite to the surface on which the coil of the thin plate member is arranged, electrical connection with other components can be made on either the front or back surface of the thin plate member.

上記導電部は上記薄板部材に設けた貫通孔に埋め込まれたものとしたり、薄板部材に設けたスルーホールを好適に用いることができる。   The conductive portion can be embedded in a through hole provided in the thin plate member, or a through hole provided in the thin plate member can be suitably used.

本発明の非接触電力伝送用コイル装置は、薄板部材を貫通する導電部に二次側受電用のコイルを接続しているために、薄板部材のコイルが配された一面側においてはもちろん、反対側の他面においても導電部に他の部品の電気的接続を図ることができるものであり、このために薄型化が求められている受電側機器においても、無理なく他の部品との電気的接続を行うことができる。   The coil device for non-contact power transmission according to the present invention is connected to the conductive portion that penetrates the thin plate member, so that the secondary power receiving coil is connected. On the other side of the side, other parts can be electrically connected to the conductive portion. For this reason, even in a power receiving side device that is required to be thin, it is possible to electrically connect with other parts without difficulty. Connection can be made.

以下、本発明を添付図面に示す実施形態に基いて説明すると、図１は受電側機器内に配される受電側の非接触電力伝送用コイル装置を示しており、薄板部材１と、この薄板部材１の一面に配した所謂平面コイルとしての二次側受電用コイル２とからなる。   DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the embodiments shown in the accompanying drawings. FIG. 1 shows a power receiving side non-contact power transmission coil device disposed in a power receiving side device. It comprises a secondary power receiving coil 2 as a so-called planar coil disposed on one surface of the member 1.

ここにおける薄板部材１は、コイル２から少し離れたところに表裏に貫通する貫通孔を設けて、この貫通孔に導電部材を埋め込むことで、薄板部材１を貫通している導電部３を備えたものとなっている。そして上記コイル２の端末は薄板部材１のコイル２が配された一面側において、上記導電部３に圧接や半田付けなどによって接続されている。   Here, the thin plate member 1 is provided with a conductive portion 3 penetrating the thin plate member 1 by providing a through hole penetrating the front and back at a distance from the coil 2 and embedding the conductive member in the through hole. It has become a thing. The terminal of the coil 2 is connected to the conductive portion 3 by pressure welding or soldering on the one surface side where the coil 2 of the thin plate member 1 is disposed.

このように構成したコイル装置は、受電側の機器４に組み込む場合、図３に示すように、コイル２をその外殻の内面に近接させて、送電側の機器５内に配した一次側送電用コイル５２に小間隔で対向させることになるために、コイル２と、受電側の機器４内の他の回路部品を実装した基板４４との間には上記薄板部材１が介在することになるが、薄板部材１に設けた導電部３は前述のように薄板部材１を貫通するものとして設けられているために、コイル２と反対側の面において導電部３と基板４４とを接続すればよく、その電気的接続は容易に行うことができる。なお、図３は受電側の機器４が携帯電話のような携帯機器、送電側の機器５が充電器である場合を想定したもので、ブロック回路図を図４に示す。図３中の４３は電池パック、４５は接続端子、５３は充電回路を搭載した基板であり、図４中の５０は整流回路、５１は発振回路、４１は整流回路、４２は充電制御回路である。   When the coil device configured as described above is incorporated in the power receiving side device 4, as shown in FIG. 3, the primary power transmission disposed in the power transmission side device 5 with the coil 2 being close to the inner surface of the outer shell. The thin plate member 1 is interposed between the coil 2 and the substrate 44 on which other circuit components in the power receiving device 4 are mounted so that the coil 52 is opposed to the coil 52 at a small interval. However, since the conductive portion 3 provided in the thin plate member 1 is provided so as to penetrate the thin plate member 1 as described above, if the conductive portion 3 and the substrate 44 are connected on the surface opposite to the coil 2. Well, the electrical connection can be made easily. FIG. 3 assumes a case where the power receiving device 4 is a portable device such as a mobile phone, and the power transmission device 5 is a charger. FIG. 4 shows a block circuit diagram. 3, 43 is a battery pack, 45 is a connection terminal, 53 is a board on which a charging circuit is mounted, 50 in FIG. 4 is a rectifier circuit, 51 is an oscillation circuit, 41 is a rectifier circuit, and 42 is a charge control circuit. is there.

上記導電部３は、図２に示すように薄板部材１にスルーホールとして設けたものであってもよい。コイル２の端末と導電部３との半田付けによる接続がより容易となる。   The conductive portion 3 may be provided as a through hole in the thin plate member 1 as shown in FIG. Connection by soldering between the terminal of the coil 2 and the conductive portion 3 becomes easier.

ここで、薄板部材１は、電力伝送効率を高めるための磁性材で形成されたものであっても、この磁性材をコイル配置部に備えた樹脂製のものであってもよいが、全体が磁性材からなるものの場合、上記導電部３は絶縁部材を介して設けるものとする。   Here, the thin plate member 1 may be formed of a magnetic material for increasing the power transmission efficiency, or may be made of a resin provided with this magnetic material in the coil placement portion. In the case of a magnetic material, the conductive portion 3 is provided via an insulating member.

いずれにしても、導電部３は薄板機材１のコイル２が配された面とは反対側の面にも露出しているために、たとえば薄板部材１とコイル２とを受電側機器４の外殻（の電池カバー）に貼り付けて設置する場合なども、他の部品との接続を無理なく行うことができるために、受電側機器４内の部品配置についての制限を少なくして薄型化にも寄与するものとなる。   In any case, since the conductive portion 3 is also exposed on the surface opposite to the surface on which the coil 2 of the thin plate equipment 1 is disposed, for example, the thin plate member 1 and the coil 2 are connected to the outside of the power receiving side device 4. Even when it is installed on the shell (battery cover), it is possible to connect with other parts without difficulty. Will also contribute.

本発明の実施の形態の一例を示すもので、(a)は概略平面図、(b)は断面図である。BRIEF DESCRIPTION OF THE DRAWINGS It shows an example of an embodiment of the present invention, (a) is a schematic plan view, (b) is a cross-sectional view. 同上の他例を示すもので、(a)は概略平面図、(b)は断面図である。It shows another example of the above, (a) is a schematic plan view, (b) is a cross-sectional view. 同上の送電側機器及び受電側機器の概略断面図である。It is a schematic sectional drawing of a power transmission side apparatus same as the above, and a power receiving side apparatus. 同上のブロック回路図である。It is a block circuit diagram same as the above.

符号の説明Explanation of symbols

１ 薄板部材
２ コイル
３ 導電部 1 Thin plate member 2 Coil 3 Conductive part

Claims (3)

一次側送電用コイルからの電力を受けるための二次側受電用のコイルを備えた非接触電力伝送用コイル装置であって、表裏に貫通して設けられた導電部を備える薄板部材の一面に上記二次側受電用コイルが配設されて上記導電部に接続されていることを特徴とする非接触電力伝送用コイル装置。   A non-contact power transmission coil device including a secondary power receiving coil for receiving power from a primary power transmission coil on one surface of a thin plate member provided with a conductive portion penetrating the front and back A coil device for non-contact power transmission, wherein the secondary power receiving coil is disposed and connected to the conductive portion. 上記導電部は上記薄板部材に設けた貫通孔に埋め込まれたものであることを特徴とする請求項１記載の非接触電力伝送用コイル装置。   2. The coil device for non-contact power transmission according to claim 1, wherein the conductive portion is embedded in a through hole provided in the thin plate member. 上記導電部は上記薄板部材に設けたスルーホールであることを特徴とする請求項１記載の非接触電力伝送用コイル装置。   2. The coil device for non-contact power transmission according to claim 1, wherein the conductive portion is a through hole provided in the thin plate member.
JP2007163044A 2007-06-20 2007-06-20 Coil device for non-contact power transmission Pending JP2009005470A (en)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006339329A (en) * 2005-06-01 2006-12-14 Seiko Epson Corp Planar coil device and substrate as well as fixing method of planar coil

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006339329A (en) * 2005-06-01 2006-12-14 Seiko Epson Corp Planar coil device and substrate as well as fixing method of planar coil

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