JP2008172872A - 無接点電力伝送コイル、携帯端末及び端末充電装置 - Google Patents
無接点電力伝送コイル、携帯端末及び端末充電装置 Download PDFInfo
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Abstract
【解決手段】
平面コイルは、単線又は撚り線からなる電線40を渦巻き状に巻回して形成されている。フレキシブルプリント基板30は、第一,第二の外部接続端子部31,32と、平面コイルの内周部37の電線端部に接続される第一のコイル接点部36と、平面コイルの外周部38の電線端部に接続される第二のコイル接点部35と、第一のコイル接点部36と第一の外部接続端子部31とを接続する第一の内部導体パターン33と、第二のコイル接点部35と第二の外部接続端子部32とを接続する第二の内部導体パターン34とが形成されている。そして、平面コイルの一方の平面部がそのフレキシブルプリント基板30の表面上に貼り付けられている。
【選択図】 図2
Description
図1には、本発明実施形態の携帯電話端末2とクレードル1の主要部の概略的な内部構造を示す。
以下、本発明の実施形態にかかる無接点電力伝送コイルの詳細を説明する。なお、以下に説明する各実施形態では、主に携帯電話端末2に搭載される無接点電力伝送コイル(二次側伝送コイル21)を例に挙げている。また、以下に示す各図は、各実施形態の無接点電力伝送コイルを概略的に示すものであり、コイルの巻線数や各部の縮尺,配置等については実際のものとは異なっており、本発明の説明を容易にするために必要に応じてデフォルメされて示されている。
図2〜図4には、電線40を渦巻き状に巻回した平面コイルを有する無接点電力伝送コイル21WSの概略構成を示す。図2はフレキシブルプリント基板30上に平面コイルが取り付けられた状態を正面から見た概略図を示しており、図3は平面コイルが取り付けられていない状態のフレキシブルプリント基板30を正面から見た概略図を、図4は本実施形態の無接点電力伝送コイル21WSの概略断面図を示している。
次に、図5〜図8には、渦巻き状の導体パターンからなる平面コイルパターンが各々形成された複数のフレキシブルプリント基板を積層した多層構造の無接点電力伝送コイル21PSの概略構成を示す。なお、図5は多層構造のフレキシブルプリント基板からなる無接点電力伝送コイル21PSを正面から見た概略図を示しており、図6は多層構造のフレキシブルプリント基板の各層をそれぞれ分離した状態を示し、図7は多層構造のフレキシブルプリント基板からなる本実施形態の無接点電力伝送コイル21PSの概略断面図を、図8は図7中の楕円E1で囲った部分を拡大して示している。
次に、図9〜図14を参照しながら、磁性シートの貼り付け方によって変わる鎖交磁束について説明する。なお、以下の説明では、図2〜図4に示した電線を渦巻き状に巻回した無接点電力伝送コイルを例に挙げているが、図5〜図8に示した渦巻き状の導体パターンを多層フレキシブルプリント基板に形成した無接点電力伝送コイルについても同様である。
図15〜図18には、電線40を渦巻き状に巻回した平面コイルの平面部と側面部にも磁性体層100を形成した場合の本実施形態の無接点電力伝送コイル21WDの概略構成を示す。なお、図15はフレキシブルプリント基板90上に電線40の平面コイルが貼り付けられた状態を正面から見た概略図を示しており、図16はその平面コイルが貼り付けられていない状態のフレキシブルプリント基板90を正面から見た概略図を、図17はこの例の無接点電力伝送コイル21WDの概略断面を、図18は図17中の楕円E5で囲った部分を拡大して示している。
図19〜図21には、多層フレキシブルプリント基板の渦巻き状の導体パターンからなる平面コイルパターンの平面部と側面部にも磁性体層101を形成した場合の本実施形態の無接点電力伝送コイル21PDの概略構成を示す。なお、図19は平面コイルパターンが形成されたフレキシブルプリント基板を積層した多層構造の無接点電力伝送コイル21PDの概略構成を示し、図20はこの例の無接点電力伝送コイル21PDの概略断面を、図21は図20中の楕円E6で囲った部分を拡大して示している。
本実施形態のように、無接点電力伝送コイルを用い、電磁誘導を利用して、クレードル1から携帯電話端末2へ電力伝送を行うような構成において、例えば、上記クレードル1の端末載置台上に例えばコインなどの金属異物が載ってしまったような場合、つまり金属異物がクレードル1の無接点電力伝送コイル10に近接した位置に存在する場合には、その金属異物に渦電流が発生して異常過熱する虞がある。
Claims (9)
- 単線又は撚り線からなる線状導体を略々同一平面内に渦巻き状に巻回して形成された平面コイルと、
第一,第二の外部接続端子部と、上記渦巻き状に巻回された線状導体の内周側端部に接続される第一の接点部と、上記渦巻き状に巻回された線状導体の外周側端部に接続される第二の接点部と、上記第一の接点部と第一の外部接続端子部とを接続する第一の導体パターンと、上記第二の接点部と第二の外部接続端子部とを接続する第二の導体パターンとが形成されたプリント基板とを有し、
上記平面コイルの一方の平面部が上記フレキシブルプリント基板の表面上に取り付けられている、
ことを特徴とする無接点電力伝送コイル。 - 上記平面コイルの少なくとも他方の平面部上を覆う磁性体層が形成されていることを特徴とする請求項1記載の無接点電力伝送コイル。
- 上記プリント基板は、温度検知素子が形成された温度検知素子層と、上記温度検知素子により検知された温度検知信号を外部に取り出すための導体パターン及び外部接続端子部とを有することを特徴とする請求項1記載の無接点電力伝送コイル。
- 二次電池と、
単線又は撚り線からなる線状導体を略々同一平面内に渦巻き状に巻回して形成された平面コイルと、第一,第二の外部接続端子部と、上記渦巻き状に巻回された線状導体の内周側端部に接続される第一の接点部と、上記渦巻き状に巻回された線状導体の外周側端部に接続される第二の接点部と、上記第一の接点部と第一の外部接続端子部とを接続する第一の導体パターンと、上記第二の接点部と第二の外部接続端子部とを接続する第二の導体パターンとが形成されたプリント基板とを有し、上記平面コイルの一方の平面部が上記プリント基板の表面上に取り付けられて成る無接点電力伝送コイルと、
上記無接点電力伝送コイルを通じて受電した電力を上記二次電池へ充電する制御を行う充電制御回路とを有する、
ことを特徴とする携帯端末。 - 上記無接点電力伝送コイルには、上記平面コイルの少なくとも他方の平面部上を覆う磁性体層が形成されていることを特徴とする請求項4記載の携帯端末。
- 上記無接点電力伝送コイルの上記プリント基板は、温度検知素子が形成された温度検知素子層と、上記温度検知素子により検知された温度検知信号を外部に取り出すための導体パターン及び外部接続端子部とを有することを特徴とする請求項4記載の携帯端末。
- 二次電池を備えた所定の携帯端末が載置される端末載置台と、
単線又は撚り線からなる線状導体を略々同一平面内に渦巻き状に巻回して形成された平面コイルと、第一,第二の外部接続端子部と、上記渦巻き状に巻回された線状導体の内周側端部に接続される第一の接点部と、上記渦巻き状に巻回された線状導体の外周側端部に接続される第二の接点部と、上記第一の接点部と第一の外部接続端子部とを接続する第一の導体パターンと、上記第二の接点部と第二の外部接続端子部とを接続する第二の導体パターンとが形成されたプリント基板とを有し、上記平面コイルの一方の平面部が上記プリント基板の表面上に取り付けられて成り、上記所定の携帯端末に搭載されているコイルとの間の電磁誘導を利用して、非接触により当該携帯端末の二次電池を充電するための電力伝送を行う無接点電力伝送コイルと、
上記無接点電力伝送コイルへの電力供給を制御する電力供給制御部とを有する、
ことを特徴とする端末充電装置。 - 上記無接点電力伝送コイルには、上記平面コイルの少なくとも他方の平面部上を覆う磁性体層が形成されていることを特徴とする請求項7記載の端末充電装置。
- 上記無接点電力伝送コイルの上記プリント基板は、温度検知素子が形成された温度検知素子層と、上記温度検知素子により検知された温度検知信号を外部に取り出すための導体パターン及び外部接続端子部とを有し、
上記電力供給制御部は、少なくとも、上記温度検知素子にて検知された温度検知信号に基づいて上記無接点電力伝送コイルへの電力供給を制御することを特徴とする請求項7記載の端末充電装置。
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JP2007001634A JP4947637B2 (ja) | 2007-01-09 | 2007-01-09 | 無接点電力伝送コイル、携帯端末及び端末充電装置 |
US12/007,078 US20080164840A1 (en) | 2007-01-09 | 2008-01-07 | Noncontact power-transmission coil, portable terminal, and terminal charging device |
EP11151541.7A EP2348517B1 (en) | 2007-01-09 | 2008-01-08 | Noncontact power-transmission coil, portable terminal, and terminal charging device |
EP08250075.2A EP2081199B1 (en) | 2007-01-09 | 2008-01-08 | Noncontact power-transmission coil, portable terminal, and terminal charging device |
CN2008101428228A CN101304184B (zh) | 2007-01-09 | 2008-01-09 | 非接触式电力传输线圈、便携式终端和终端充电装置 |
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Cited By (50)
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JP2009005471A (ja) * | 2007-06-20 | 2009-01-08 | Panasonic Electric Works Co Ltd | 電子機器 |
JP2010197246A (ja) * | 2009-02-25 | 2010-09-09 | Os Electronics Co Ltd | 体温タグ |
JP2010197245A (ja) * | 2009-02-25 | 2010-09-09 | Os Electronics Co Ltd | 体温計及び体温測定システム |
EP2317624A1 (en) | 2009-10-30 | 2011-05-04 | TDK Corporation | Wireless power feeder, wireless power transmission system, and table and table lamp using the same |
JP2011229202A (ja) * | 2010-04-15 | 2011-11-10 | Panasonic Corp | 無線電力伝送用コイル |
JP4835786B1 (ja) * | 2010-12-01 | 2011-12-14 | パナソニック株式会社 | 非接触充電モジュール及び非接触充電機器 |
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Also Published As
Publication number | Publication date |
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EP2081199B1 (en) | 2016-12-14 |
CN101304184B (zh) | 2013-01-23 |
CN101304184A (zh) | 2008-11-12 |
EP2081199A1 (en) | 2009-07-22 |
EP2348517B1 (en) | 2017-09-27 |
JP4947637B2 (ja) | 2012-06-06 |
EP2348517A1 (en) | 2011-07-27 |
US20080164840A1 (en) | 2008-07-10 |
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