JP2015529445A - 無線電力制御 - Google Patents
無線電力制御 Download PDFInfo
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
- H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/001—Energy harvesting or scavenging
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/60—Circuit arrangements or systems for wireless supply or distribution of electric power responsive to the presence of foreign objects, e.g. detection of living beings
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/80—Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00308—Overvoltage protection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/40—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices
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Abstract
Description
図23は、例えば、無線トランスミッタからの距離に応じて、一つ又は複数の適応共振制御型フィールドエクステンダ2300を使用して磁界を延在させる方式を示している。それぞれの適応共振制御型フィールドエクステンダ2300は、電力を無線電力トランスミッタから別の無線電力レシーバに中継することにより、磁界の有効範囲を事実上延長させることができる無線電力トランスミッタ及び無線電力レシーバである。中継される電力量は、適応共振制御回路2308、2310を使用して制御することが可能であり、適応共振制御回路2308、2310は、アナログ又はデジタル回路又はこれらの組合せを含んでもよい。例えば、電力量を閾値に限定し、EMI/EMC適合性を増大させることができる。実際の磁界分布及び電力の調節の分解能の向上のために、磁気センサ2302を追加してもよい。電圧閾値を利用して下流の回路電圧を保護することができる。異物検出及び調節のために、電流及び電圧閾値を利用することができる。閾値は、無線電力伝送のそれぞれの段階ごとに適切な磁界曝露を保証するように、設定することができる。適応電力レシーバという用語は、適応電力エクステンダを意味する場合がある。
図31は、L1の上方及びレシーバL3及びL4の上方における遮蔽を含む4コイル解決策の有限要素分析(Finite Element Analysis:FEA)のセットアップを示している。このシミュレーションにおいては、レシーバ(L3及びL4)は、トランスミッタの上方においてセンタリングされている。図32は、システムの共振周波数(この実施形態においては、これは121kHzである)において動作した際の磁束密度の断面図を示している。
・シングル又はデュアルコイルレシーバを有する様々な結合構成に対して適合する能力
・制御された磁界閾値を有するフィールドエクステンダ及び適応共振を使用する能力
・疎結合又は密結合システム上における適応共振の制御
・装置の特徴判定のための初期化電力曲線の利用
・バルク静電容量及びリップルの極小化のための共振のサイクルごとの制御の増大又は極大化
・適応共振制御を可能にするプロセス及び制御シーケンス
・適応共振システム内におけるマルチ装置制御
・特定の有効範囲内に存在するすべてのレシーバに対処するシステム
・DC−DCコンバータを介した補助調節に対するニーズの低減
・サイクル当たりに複数の時間を調節することによるリップルの低減
・複数のサイクルにわたって共振を適合させることによるクロックタイミングに対する要件の低減、及び
・Qが過大にならないことを保証することによる安定性の増大
Claims (34)
- 無線電源から無線電力を受け取るリモート装置であって、
誘導結合を通じて前記無線電源から電力を受け取る能力を有する適応電力レシーバであって、第一モードに構成可能であると共に第二モードに構成可能である適応電力レシーバと、
前記適応電力レシーバ内において生成された電力を受け取る負荷であって、前記第一モードにおいて、前記適応電力レシーバは、前記無線電源から受け取ったエネルギを保存する能力を有し、前記第二モードにおいて、前記適応電力レシーバは、前記保存されたエネルギを前記負荷に放出する、負荷と、
前記適応電力レシーバに動作可能に結合されたコントローラであって、前記適応電力レシーバを前記第一モードと前記第二モードとの間において選択的に構成することにより、前記無線電源から受け取る電力を制御する能力を有するコントローラと、
を有するリモート装置。 - 前記第一モードは、高Qモードであり、且つ、前記第二モードは、低Qモードである、請求項1に記載のリモート装置。
- 前記コントローラは、前記適応電力レシーバの実効Qを閾値超又は未満に維持することによって前記無線電源と前記リモート装置との間の電力伝送の効率を改善するべく、前記適応電力レシーバが前記高Qモードにある持続時間を制御する、請求項2に記載のリモート装置。
- 前記適応電力レシーバは、受け取った電力を整流すると共に前記適応電力レシーバを前記第一モードと前記第二モードとの間においてスイッチングする能力を有する適応制御回路を含む、請求項1に記載のリモート装置。
- 前記適応制御回路は、受け取った電力の半同期整流のために構成可能である、請求項4に記載のリモート装置。
- 前記適応電力レシーバは、二次タンク回路を含み、且つ、前記適応制御回路は、前記二次タンク回路を供給基準に対して選択的に結合する能力を有する少なくとも二つのスイッチを含み、
前記少なくとも二つのスイッチの第一スイッチ及び第二スイッチを起動することにより、前記二次タンク回路が、前記第一スイッチ及び前記第二スイッチの両方を通じて前記共通基準に選択的に結合され、これにより、前記適応電力レシーバが前記第一モードにおいて高Q共振器として構成され、
前記第一スイッチを起動すると共に前記第二スイッチを無効状態において残すことにより、受け取った電力の半同期整流が可能になり、且つ、前記適応電力レシーバが前記第二モードにおいて低Q共振器として構成される、
請求項4に記載のリモート装置。 - 前記適応電力レシーバは、前記電力の波長当たりに2回だけ、前記第一モードから前記第二モードに構成される、請求項4に記載のリモート装置。
- 前記コントローラは、それぞれの前記波長ごとに前記第二モードとの関係において前記第一モードのデューティサイクルを制御することにより、前記適応電力レシーバが受け取る電力を制御し、前記デューティサイクルを増大させることにより、前記適応電力レシーバがそれぞれの前記波長ごとに前記第一モードにある持続時間が増大し、且つ、前記デューティサイクルを減少させることにより、前記適応電力レシーバがそれぞれの前記波長ごとに前記第一モードにある前記持続時間が減少する、請求項4に記載のリモート装置。
- 前記デューティサイクルは、前記負荷に提供される前記電力のリップルを極小化すると共に前記負荷に供給される前記電力をバッファリングするべく使用されるバルク静電容量を極小化するように、制御される、請求項8に記載のリモート装置。
- 前記第一モードは、共振状態であり、且つ、前記第二モードは、高度な共振状態である、請求項1に記載のリモート装置。
- 前記無線電源から受け取る前記電力は、電力波長を有し、且つ、前記コントローラは、前記電力の波長当たりに少なくとも1回だけ、前記適応電力レシーバを前記第一モードから前記第二モードに選択的に構成する、請求項1に記載のリモート装置。
- 誘導結合を通じて前記無線電源から電力を受け取る能力を有する補助レシーバを更に有し、前記第一モードにおいて、前記適応電力レシーバは、前記無線電源から前記補助レシーバに電力を提供すると共に前記負荷に対する電力の直接的な提供をバイパスし、且つ、前記第二モードにおいては、前記適応電力レシーバは、電力を前記負荷に直接的に提供する、請求項1に記載のリモート装置。
- 前記適応電力レシーバは、前記第二モードとの比較において、前記第一モードにおける等価直列抵抗を低減している、請求項1に記載のリモート装置。
- 前記コントローラは、受け取った電力が閾値未満であるという判定に応答して、受け取る電力の量を増大させるように、前記適応電力レシーバを制御する、請求項1に記載のリモート装置。
- 初期化の際に、前記コントローラは、前記適応電力レシーバが前記無線電源に密結合されているのか又は前記無線電源に疎結合されているのかを判定し、
前記適応電力レシーバが疎結合されているという判定に基づいて、前記コントローラは、前記適応電力レシーバの前記第一及び第二モードの間における選択的スイッチングを開始し、且つ、
前記適応電力レシーバが密結合されているという判定に基づいて、前記コントローラは、前記適応電力レシーバを前記第二モードにおいて保持する、
請求項1に記載のリモート装置。 - 前記適応電力レシーバは、前記無線電源と前記リモート装置との間において相対的に大きな距離において疎結合状態となり、且つ、前記適応電力レシーバは、前記無線電源と前記リモート装置との間において相対的に近接した状態で密結合状態となる、請求項15に記載のリモート装置。
- 前記適応電力レシーバは、前記無線電源と誘導結合する能力を有する単一のインダクタを含む、請求項1に記載のリモート装置。
- リモート装置内において無線電源から受け取った電力を制御する方法であって、
前記無線電源との間における誘導結合を介して適応電力レシーバ内において電力を受け取るステップと、
前記適応電力レシーバを、前記適応電力レシーバが前記無線電源から受け取ったエネルギを保存する能力を有する第一モードにおいて、選択的に構成するステップと、
前記適応電力レシーバを、前記適応電力レシーバが保存されているエネルギを負荷に放出する第二モードにおいて、選択的に構成するステップと、
を有する方法。 - 前記第一モードは、高Qモードであり、且つ、前記第二モードは、低Qモードである、請求項18に記載の方法。
- 所定のデューティサイクルにおいて前記第一モードと前記第二モードとの間において循環し、前記適応電力レシーバが受け取る電力量を制御するステップ、を更に有する、請求項18に記載の方法。
- 前記無線電源から受け取った前記電力は、電力波長を有し、且つ、前記循環ステップは、電力波長当たりに少なくとも1回だけ発生する、請求項20に記載の方法。
- 電力波長当たりに2回だけ、前記第一モードから前記第二モードに循環するステップ、を更に有する、請求項21に記載の方法。
- 前記適応電力レシーバの実効Qを増大させるべく、前記循環ステップの前記デューティサイクルを増大させるステップ、を更に有する、請求項20に記載の方法。
- 前記適応電力レシーバの実効Qを減少させるべく、前記循環ステップの前記デューティサイクルを減少させるステップ、を更に有する、請求項20に記載の方法。
- 無線電力をリモート装置に伝送する無線電力トランスミッタであって、
無線電力を前記リモート装置に伝送する能力を有する適応電力トランスミッタであって、前記適応電力トランスミッタは、第一モードに対して構成可能であり、且つ、第二モードに対して構成可能であり、
前記第一モードにおいて、前記適応電力トランスミッタは、第一共振周波数を有し、前記第二モードにおいて、前記適応電力トランスミッタは、第二の異なる共振周波数を有する、適応電力トランスミッタと、
前記適応電力トランスミッタに動作可能に結合されたコントローラであって、前記適応電力トランスミッタを前記第一モードと前記第二モードとの間において選択的に構成することにより、前記無線電源によって伝送される電力を制御する能力を有するコントローラと、
を有する無線電力トランスミッタ。 - 前記適応電力トランスミッタは、インピーダンス要素と、スイッチと、を含み、前記第一モードにおいて、前記スイッチは、閉路され、且つ、前記インピーダンス要素は、前記適応電力トランスミッタに電気的に接続され、前記第二モードにおいて、前記スイッチは、開路状態にあり、且つ、前記インピーダンス要素は、前記適応電力トランスミッタから電気的に接続解除される、請求項25に記載の無線電力トランスミッタ。
- 前記コントローラは、伝送される前記電力の波長当たりに少なくとも1回だけ、前記適応電力トランスミッタを前記第一モードから前記第二モードに選択的に構成することによって前記適応電力トランスミッタを前記第一モードと前記第二モードとの間において選択的に構成することにより、前記リモート装置に伝送される電力を制御する能力を有する、請求項26に記載の無線電力トランスミッタ。
- 前記コントローラは、伝送される前記電力の波長当たりに少なくとも2回だけ、前記適応電力トランスミッタを前記第一モードから前記第二モードに選択的に構成することによって前記適応電力トランスミッタを前記第一モードと前記第二モードとの間において選択的に構成することにより、前記リモート装置に伝送される電力を制御する能力を有する、請求項26に記載の無線電力トランスミッタ。
- 前記コントローラは、前記適応電力トランスミッタが前記第一モードにある持続時間を前記適応電力トランスミッタが前記第二モードにある持続時間との関係において変化させることにより、前記共振周波数を変化させる、請求項26に記載の無線電力トランスミッタ。
- 無線電力をリモート装置に伝送する無線電力トランスミッタであって、
無線電力を前記リモート装置に伝送する能力を有する適応電力トランスミッタであって、前記適応電力トランスミッタは、第一モードに対して構成可能であり、且つ、第二モードに対して構成可能であり、
前記第一モードにおいて、前記適応電力トランスミッタは、相対的に小さなQ係数を有し、前記第二モードにおいて、前記適応電力トランスミッタは、相対的に大きなQ係数を有する、適応電力トランスミッタと、
前記適応電力レシーバに動作可能に結合されたコントローラであって、前記適応電力トランスミッタを前記第一モードと前記第二モードとの間において選択的に構成することにより、前記無線電源によって伝送される電力を制御する能力を有するコントローラと、
を有する無線電力トランスミッタ。 - 前記適応電力トランスミッタは、抵抗器と、スイッチと、を含み、前記第一モードにおいて、前記スイッチは、閉路され、且つ、前記抵抗器は、前記適応電力トランスミッタに対して電気的に接続され、前記第二モードにおいて、前記スイッチは、開路状態にあり、且つ、前記抵抗器は、前記適応電力トランスミッタから電気的に接続解除される、請求項30に記載の無線電力トランスミッタ。
- 前記コントローラは、伝送される前記電力の波長当たりに少なくとも1回だけ、前記適応電力トランスミッタを前記第一モードから前記第二モードに選択的に構成することによって前記適応電力トランスミッタを前記第一モードと前記第二モードとの間において選択的に構成することにより、前記リモート装置に伝送される電力を制御する能力を有する、請求項30に記載の無線電力トランスミッタ。
- 前記コントローラは、伝送される前記電力の波長当たりに少なくとも2回だけ、前記適応電力トランスミッタを前記第一モードから前記第二モードに選択的に構成することによって前記適応電力トランスミッタを前記第一モードと前記第二モードとの間において選択的に構成することにより、前記リモート装置に伝送される電力を制御する能力を有する、請求項30に記載の無線電力トランスミッタ。
- 前記コントローラは、前記適応電力トランスミッタが前記第一モードにある持続時間を前記適応電力トランスミッタが前記第二モードにある持続時間との関係において変化させることにより、前記共振周波数を変化させる、請求項30に記載の無線電力トランスミッタ。
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US201261699643P | 2012-09-11 | 2012-09-11 | |
US61/699,643 | 2012-09-11 | ||
PCT/US2013/031137 WO2014042681A2 (en) | 2012-09-11 | 2013-03-14 | Wireless power control |
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JP2015529445A true JP2015529445A (ja) | 2015-10-05 |
JP6382818B2 JP6382818B2 (ja) | 2018-08-29 |
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TW201411981A (zh) | 2014-03-16 |
US20180226835A1 (en) | 2018-08-09 |
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CN103683522B (zh) | 2019-03-29 |
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WO2014042681A2 (en) | 2014-03-20 |
JP6382818B2 (ja) | 2018-08-29 |
KR20150054802A (ko) | 2015-05-20 |
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