JPWO2017094119A1 - 非接触給電装置 - Google Patents
非接触給電装置 Download PDFInfo
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Abstract
Description
本発明の第1実施形態の非接触給電装置1について、図1〜図11を参考にして説明する。図1は、第1実施形態の非接触給電装置1の構成を模式的に説明する図である。第1実施形態の非接触給電装置1は、固定部に相当する基板生産ライン9に組み付けられている。図1に示されるように、基板生産ライン9は、3台の第1〜第3基板生産機91、92、93が列設されて構成されている。図1の左右方向は、第1〜第3基板生産機91、92、93の列設方向であり、後述する移動体99の移動方向でもある
次に、図1に省略されていた正対時給電部6の構成について説明する。図3は、正対時給電部6の構成を模式的に説明する図である。また、図4は、正対時給電部6の構成を模式的に説明する図3のZ方向から見た部分拡大側面図である。正対時給電部6は、各基板生産機91〜93のそれぞれの給電素子31(31L、31R)ごとに設けられる。正対時給電部6は、正対状態検出部を構成するセンサ61L、61R、62L、62Rおよびドッグ68、ならびに交流電源2(2L、2R)の電源スイッチ23L、23Rなどで構成されている。
次に、第1実施形態の非接触給電装置1の動作について説明する。簡易な動作の例として、移動体99が図3に示される左端位置から右方向へと一定の移動速度で移動する場合を想定する。実際には、移動体99は、移動速度が可変に制御されるとともに、移動方向の任意の位置で停止可能である。図5〜図10は、移動体99が図中の右方向へ移動してゆく状態を時系列的に示す図である。また、図11は、移動体99の移動に伴って変化する第1および第2基板生産機91、92のセンサ61L、61R、62L、62Rおよび交流電源2L、2Rの状態を示すタイムチャートの図である。
第1実施形態の非接触給電装置1は、固定部(基板生産ライン9)に設定された移動方向に沿い相互に離間して配置された複数の給電コイル31(31L、31R)と、複数の給電素子に個別に交流電力を供給可能な交流電源2(2L、2R)と、移動方向に沿って移動する移動体99に設けられ、かつ移動方向に沿い相互に離間して配置され、複数の給電コイルのうち対向配置されたいずれかの給電コイル31(31L、31R)と電気的に結合して非接触で交流電力を受け取る複数の受電コイル41(41L、41R)と、複数の受電コイル41(41L、41R)が受け取った交流電力を変換して受電電圧を生成し、移動体99に設けられた電気負荷57に出力する受電回路5と、複数の給電コイルのそれぞれの給電コイル31(31L、31R)ごとに設けられ、給電コイル31(31L、31R)の移動方向の長さLTの範囲内に複数の受電コイルのうち少なくとも1個の受電コイル41(41L、41R)の移動方向の長さLRの全体が対向するという正対状態を検出し、正対状態を検出したときにのみ交流電源2(2L、2R)から給電コイル31(31L、31R)に交流電力を供給させる正対時給電部6とを備え、複数の給電コイル31(31L、31R)の移動方向の長さLTおよび相互離間距離DT、ならびに複数の受電コイル41(41L、41R)の移動方向の長さLRおよび相互離間距離DRは、常に給電コイル31(31L、31R)と少なくとも1個の受電コイル41(41L、41R)とが正対状態になるという正対条件を満足するように設定され、受電回路5は、正対状態にある少なくとも1個の受電コイル41(41L、41R)が受け取った交流電力を変換して、電気負荷57を駆動する駆動電圧以上の受電電圧を生成可能である。
次に、第2実施形態の非接触給電装置1Aについて、第1実施形態と異なる点を主に説明する。第2実施形態において、交流電源25および正対時給電部6Aの構成が第1実施形態と異なり、その他の部位は第1実施形態と同じである。図12は、第2実施形態の交流電源25および正対時給電部6Aの構成を模式的に説明する図である。
なお、共振用素子としての給電側コンデンサ35および受電側コンデンサ45を用いつつ、交流電源2(2L、2R)、25の周波数を共振周波数からずらしてもよい。この場合、共振特性の変化の影響を受けにくくなるので、受電電圧の絶対値は多少低下しても、電圧変動は減少する。したがって、直流電源回路55の省略が可能になる。また、正対状態検出部を構成するセンサ61L、61R、62L、62Rの個数および配置位置、ならびにドッグ68の個数、長さ、および配置位置は、適宜変更しても同等の機能および作用を具備させることができる。さらに、非接触給電の方式は、給電コイル31(31L、31R)および受電コイル41(41L、41R)を用いた電磁結合方式に限定されず、例えば、給電電極および受電電極を用いた静電結合方式であってもよい。本発明は、その他にも様々な応用や変形が可能である。
2、2L、2R:交流電源 23L、23R:電源スイッチ
25:交流電源 26L、26R:開閉スイッチ
31、31L、31R:給電コイル(給電素子)
35:給電側コンデンサ(共振用素子)
41、41L、41R:受電コイル(受電素子)
45:受電側コンデンサ(共振用素子)
5:受電回路 51:整流回路 55:直流電源回路
6、6A:正対時給電部
61L、61R、62L、62R:センサ(正対状態検出部)
68:ドッグ(正対状態検出部)
9:基板生産ライン(固定部)
91〜93:第1〜第3基板生産機 99:移動体
LT:給電コイルの移動方向の長さ
DT:給電コイルの相互離間距離
LR:受電コイルの移動方向の長さ
DR:受電コイルの相互離間距離
Claims (8)
- 固定部に設定された移動方向に沿い相互に離間して配置された複数の給電素子と、
前記複数の給電素子に個別に交流電力を供給可能な交流電源と、
前記移動方向に沿って移動する移動体に設けられ、かつ前記移動方向に沿い相互に離間して配置され、前記複数の給電素子のうち対向配置されたいずれかの給電素子と電気的に結合して非接触で交流電力を受け取る複数の受電素子と、
前記複数の受電素子が受け取った交流電力を変換して受電電圧を生成し、前記移動体に設けられた電気負荷に出力する受電回路と、
前記複数の給電素子のそれぞれの給電素子ごとに設けられ、前記給電素子の前記移動方向の長さの範囲内に前記複数の受電素子のうち少なくとも1個の受電素子の前記移動方向の長さの全体が対向するという正対状態を検出し、前記正対状態を検出したときにのみ前記交流電源から前記給電素子に前記交流電力を供給させる正対時給電部とを備え、
前記複数の給電素子の移動方向の長さおよび相互離間距離、ならびに前記複数の受電素子の移動方向の長さおよび相互離間距離は、常に前記給電素子と前記少なくとも1個の受電素子とが前記正対状態になるという正対条件を満足するように設定され、
前記受電回路は、前記正対状態にある前記少なくとも1個の受電素子が受け取った交流電力を変換して、前記電気負荷を駆動する駆動電圧以上の受電電圧を生成可能である非接触給電装置。 - 前記複数の給電素子の移動方向の長さをLTとし、前記複数の給電素子の相互離間距離をDTとし、前記複数の受電素子の移動方向の長さをLRとし、前記複数の受電素子の相互離間距離をDRとしたとき、
前記正対条件は、DT≦DRの関係、および(2×LR+DR)≦LTの関係によって表される請求項1に記載の非接触給電装置。 - 前記正対時給電部は、
前記給電素子ごとに設けられた交流電源を活殺する電源スイッチ、または、前記複数の給電素子に共通に設けられた交流電源と前記給電素子とを接続する電路に介挿された開閉スイッチと、
前記正対状態を検出したときにのみ前記電源スイッチを投入し、または前記開閉スイッチを閉路する正対状態検出部と、を含む請求項1または2に記載の非接触給電装置。 - 前記正対状態検出部は、前記給電素子に対応して前記固定部に設けられたセンサと、前記複数の受電素子に対応して前記移動体に設けられたドッグと、を含み、前記正対状態にある前記少なくとも1個の受電素子に対応する前記ドッグが前記センサを作動する請求項3に記載の非接触給電装置。
- 前記センサは、前記給電素子の移動方向の両端から前記受電素子の移動方向の長さ分だけ中央に寄った位置に配置され、前記ドッグは、前記複数の受電素子の相互に離れた遠方端同士を結んで延在する請求項4に記載の非接触給電装置。
- 前記給電素子および前記受電素子の少なくとも一方に接続されて共振回路を形成する共振用素子をさらに備え、
前記受電回路は、前記受電素子ごとに設けられて前記受電素子が受け取った交流電力を直流の前記受電電圧に変換して出力する複数の整流回路と、各前記整流回路から出力された直流の前記受電電圧を直流の前記駆動電圧に変換する直流電源回路と、を含む請求項1〜5のいずれか一項に記載の非接触給電装置。 - 前記受電素子は受電コイルであり、前記給電素子は給電コイルである請求項1〜6のいずれか一項に記載の非接触給電装置。
- 前記固定部は、複数の基板生産機が列設された基板生産ラインであり、前記複数の基板生産機の列設方向に前記移動方向が設定されており、
前記複数の給電素子は、前記複数の基板生産機に同数個ずつ配置されている請求項1〜7のいずれか一項に記載の非接触給電装置。
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