JP5612069B2 - ワイヤレス電力伝送における適応インピーダンス同調 - Google Patents
ワイヤレス電力伝送における適応インピーダンス同調 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
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/14—Inductive couplings
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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
- H02J50/20—Circuit arrangements or systems for wireless supply or distribution of electric power using microwaves or radio frequency waves
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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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- 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
- H02J50/70—Circuit arrangements or systems for wireless supply or distribution of electric power involving the reduction of electric, magnetic or electromagnetic leakage fields
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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
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/90—Circuit arrangements or systems for wireless supply or distribution of electric power involving detection or optimisation of position, e.g. alignment
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of DC power input into DC power output
- H02M3/02—Conversion of DC power input into DC power output without intermediate conversion into AC
- H02M3/04—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters
- H02M3/10—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/20—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium
- H04B5/24—Inductive coupling
- H04B5/26—Inductive coupling using coils
- H04B5/266—One coil at each side, e.g. with primary and secondary coils
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
- H04B5/79—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for data transfer in combination with power transfer
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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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Description
102 入力電力
104 送信機
106 放射界
108 受信機
110 出力電力
112 距離
114 送信アンテナ
114 アンテナ
118 受信アンテナ
118 アンテナ
119 通信チャネル
122 発振器
123 調整信号
124 電力増幅器
125 制御信号
126 フィルタおよび整合回路
132 整合回路
134 整流器およびスイッチング回路
136 バッテリー
150 ループアンテナ
152 キャパシタ
154 キャパシタ
156 共振信号
200 送信機
202 送信回路
202 送信機回路
204 送信アンテナ
206 インピーダンス整合回路
208 低域フィルタ(LPF)
210 電力増幅器
210 増幅器
212 発振器
214 コントローラ
216 負荷感知回路
270 メモリ
280 存在検出器
290 密閉検出器
300 受信機
302 受信回路
304 受信アンテナ
304 アンテナ
306 電力変換回路
308 RF-DC変換器
310 DC-DC変換器
312 スイッチング回路
314 ビーコン検出器
316 プロセッサ
320 インピーダンス整合回路
330 単純整流器
330 整流器
340 DC入力信号
342 電圧センサ
344 電流センサ
345 電圧基準
346 マルチプレクサ
348 コンパレータ
350 デバイス
350 DC-DC変換器
350 スイッチモードDC-DC変換器
360 プロセッサ
361 出力
362 PWM信号
370 DC出力信号
372 電圧センサ
374 電流センサ
405 充電システム
410 ドライバ
410 送信電力増幅器
420 整合ネットワーク
430 結合コイルトランスフォーマモデル
430 トランスフォーマモデル
432 1次コイル
432 送信アンテナ
432 TXアンテナ
434 2次コイル
434 受信アンテナ
434 受信コイル
440 インピーダンス整合および整流器回路
440 整流器
450 DC負荷
450 DC-DC変換器
450 入力直列同調DC-DC変換器
Claims (32)
- ワイヤレス電力受信機であって、
アンテナに結合された整流器であって、前記アンテナが、ワイヤレス電力信号を受信するように構成され、整流器が、前記ワイヤレス電力信号を直流入力信号に変換するように構成された、整流器と、
前記直流入力信号とパルス幅変調信号とに部分的に基づいて直流出力信号を生成するように構成された、直流直流変換器と、
前記直流入力信号および前記直流出力信号に部分的に基づいて前記直流直流変換器への前記パルス幅変調信号のデューティサイクルを変更することによって前記ワイヤレス電力受信機の交流インピーダンスを調整するように構成されたパルス変調器と
を含む、ワイヤレス電力受信機。 - 前記直流直流変換器が、前記直流入力信号に部分的に基づいて前記直流出力信号の電力出力を調整するようにさらに構成された、請求項1に記載のワイヤレス電力受信機。
- 前記パルス変調器が、前記直流入力信号の電流と前記直流入力信号の電圧とのうちの少なくとも1つに部分的に基づいて前記パルス幅変調信号を変更するように構成された、請求項1に記載のワイヤレス電力受信機。
- 前記パルス変調器が、前記直流出力信号の電圧と前記直流出力信号の電流とのうちの少なくとも1つに部分的に基づいて前記パルス幅変調信号を変更するように構成された、請求項1に記載のワイヤレス電力受信機。
- 前記パルス変調器が、前記直流入力信号と基準信号との比較に部分的に基づいて前記パルス幅変調信号を生成するように構成されたコンパレータをさらに含む、請求項1に記載のワイヤレス電力受信機。
- 前記パルス変調器がプロセッサをさらに含み、前記プロセッサが、
前記直流入力信号を受信することと、
前記直流入力信号の値をサンプリングすることと、
前記ワイヤレス電力受信機の前記交流インピーダンスを調整することであって、調整することが、前記直流出力信号上の電力出力を実質的に最大化するために、前記直流入力信号からサンプリングされた前記値に部分的に基づいて前記パルス幅変調信号の前記デューティサイクルを調整することを含む、調整することと
を行うように構成された、請求項1に記載のワイヤレス電力受信機。 - サンプリングされた前記値が、前記直流入力信号の電流と前記直流入力信号の電圧とのうちの1つまたは複数である、請求項6に記載のワイヤレス電力受信機。
- 前記プロセッサが、
前記直流出力信号の電圧と前記直流出力信号の電流とのうちの少なくとも1つをサンプリングすることと、
前記直流出力信号の前記サンプリングされた電圧、前記直流出力信号の前記サンプリングされた電流、またはそれらの組合せに部分的に基づいて前記パルス幅変調信号の前記デューティサイクルをさらに調整することと
を行うようにさらに構成された、請求項7に記載のワイヤレス電力受信機。 - 前記直流入力信号の電流に部分的に基づいて入力電流感知信号を生成するように構成された入力電流センサをさらに含み、前記プロセッサが、
前記入力電流感知信号を受信することと、
前記入力電流感知信号から1つまたは複数の値をサンプリングすることと
を行うようにさらに構成され、
前記ワイヤレス電力受信機の前記交流インピーダンスを調整することが、前記直流出力信号上の前記電力出力を実質的に最大化するために、前記入力電流感知信号からの前記1つまたは複数のサンプリングされた値に部分的に基づいて前記パルス幅変調信号の前記デューティサイクルを調整することをさらに含む請求項6に記載のワイヤレス電力受信機。 - 前記直流出力信号の電流に部分的に基づいて出力電流感知信号を生成するように構成された出力電流センサをさらに含み、前記プロセッサが、
前記出力電流感知信号を受信することと、
前記出力電流感知信号の値をサンプリングすることと、
前記直流出力信号の前記電圧をサンプリングすることと
を行うようにさらに構成され、
前記ワイヤレス電力受信機の前記交流インピーダンスを調整することが、前記直流出力信号上の前記電力出力を実質的に最大化するために、前記出力電流感知信号からの前記サンプリングされた値と前記直流出力信号の前記サンプリングされた電圧とに部分的に基づいて前記パルス幅変調信号を調整することをさらに含む請求項6に記載のワイヤレス電力受信機。 - 前記パルス変調器がプロセッサをさらに含み、前記プロセッサが、
前記直流入力信号を受信することと、
前記直流入力信号の値をサンプリングすることと
を行うように構成され、
前記パルス幅変調信号の前記デューティサイクルを変更することが、前記直流出力信号を受信するように構成された受信機デバイスにとって最適ではないが許容できる電力レベルに前記直流出力信号上の電力出力を低減するために、前記直流入力信号からの前記サンプリングされた値に部分的に基づいて前記パルス幅変調信号の前記デューティサイクルを変更することを含む請求項1に記載のワイヤレス電力受信機。 - 前記直流直流変換器が、前記直流入力信号と、前記直流出力信号と、前記パルス幅変調信号とを受信するように構成されたバックコンバータまたはブーストコンバータを含み、
前記直流直流変換器が、
前記直流入力信号上の入力インピーダンスを調整することと、
前記パルス幅変調信号の前記デューティサイクルに部分的に基づいて前記直流入力信号に対する前記直流出力信号の電圧を調整することと
を行うように構成された請求項1に記載のワイヤレス電力受信機。 - ワイヤレス電力信号を受信するステップと、
前記ワイヤレス電力信号を直流入力信号に整流するステップと、
前記直流入力信号を直流出力信号に変換するステップと、
前記直流入力信号および前記直流出力信号に部分的に基づいて前記直流出力信号の電力出力を調整することによって前記ワイヤレス電力受信機の交流インピーダンスを変更するステップと
を含む方法。 - 前記交流インピーダンスを変更するステップが、前記直流入力信号の電圧と前記直流入力信号の電流とのうちの1つまたは複数に部分的に基づいて前記直流出力信号の前記電力出力を調整するステップを含む、請求項13に記載の方法。
- 前記交流インピーダンスを変更するステップが、前記直流出力信号の電圧と前記直流出力信号の電流とのうちの1つまたは複数に部分的に基づいて前記直流出力信号の前記電力出力を調整するステップを含む、請求項13に記載の方法。
- 前記交流インピーダンスを変更するステップが、前記直流入力信号の電圧と、前記直流入力信号の電流と、前記直流出力信号の電圧と、前記直流出力信号の電流とのうちの1つまたは複数に部分的に基づいて前記直流直流変換器からの前記直流出力信号の前記電力出力を調整するステップを含む、請求項13に記載の方法。
- 前記交流インピーダンスを変更するステップが、前記直流入力信号と電圧基準信号との比較に部分的に基づく、請求項13に記載の方法。
- 前記直流入力信号を前記直流出力信号に変換するステップが、バック変換またはブースト変換を含み、前記変換するステップが、
前記直流入力信号の電圧をサンプリングするステップと、
前記直流入力信号の前記サンプリングされた電圧に部分的に基づいて最大電力出力を判断するステップと、
前記直流出力信号の前記電力出力を実質的に最大化するためにパルス幅変調信号を調整するステップと
をさらに含む、請求項13に記載の方法。 - 前記直流入力信号を前記直流出力信号に変換するステップが、バック変換またはブースト変換を含み、前記変換するステップが、
前記直流入力信号の電圧をサンプリングするステップと、
前記直流入力信号の前記サンプリングされた電圧に部分的に基づいて最大電力出力を判断するステップと、
前記直流出力信号を受信するように構成された受信機デバイスにとって最適ではないが許容できる電力レベルに前記DC出力信号上の電力出力を低減するために、パルス幅変調信号を調整するステップと
をさらに含む、請求項13に記載の方法。 - 前記直流入力信号の電圧と、前記直流入力信号の電流と、前記直流出力信号の電圧と、前記直流出力信号の電流とのうちの少なくとも1つから1つまたは複数の値をサンプリングするステップをさらに含み、
前記最大電力出力を判断する前記ステップが、前記サンプリングされた値のうちの前記1つまたは複数に部分的に基づく、請求項13に記載の方法。 - ワイヤレス電力受信機であって、
ワイヤレス電力信号を受信するための手段と、
前記ワイヤレス電力信号を直流入力信号に整流するための手段と、
前記直流入力信号を直流出力信号に変換するための手段と、
前記直流入力信号および前記直流出力信号に部分的に基づいて、前記直流入力信号を直流出力信号に変換するための前記手段からの前記直流出力信号の電力出力を調整するための手段を含み、前記直流出力信号の電力出力を調整することによって前記ワイヤレス電力受信機の交流インピーダンスを変更するための手段と
を含むワイヤレス電力受信機。 - 前記ワイヤレス電力受信機の前記交流インピーダンスを変更するための前記手段が、前記直流入力信号の電圧と前記直流入力信号の電流とのうちの1つまたは複数に部分的に基づいて、前記直流入力信号を直流出力信号に変換するための前記手段からの前記直流出力信号の前記電力出力を調整するための手段をさらに含む、請求項21に記載のワイヤレス電力受信機。
- 前記ワイヤレス電力受信機の前記交流インピーダンスを変更するための前記手段が、前記直流入力信号の電圧と、前記直流入力信号の電流と、前記直流出力信号の電圧と、前記直流出力信号の電流とのうちの1つまたは複数に部分的に基づいて、前記直流入力信号を直流出力信号に変換するための前記手段からの前記直流出力信号の前記電力出力を調整するための手段をさらに含む、請求項21に記載のワイヤレス電力受信機。
- 値を判断するために前記直流入力信号を電圧基準信号と比較するための手段をさらに含み、前記ワイヤレス電力受信機の前記交流インピーダンスを変更するための前記手段が、前記値に部分的に基づいて前記交流インピーダンスを変更するように構成された、請求項21に記載のワイヤレス電力受信機。
- 前記直流入力信号を直流出力信号に変換するための前記手段が、バック変換のための手段またはブースト変換のための手段のうちの少なくとも1つを含み、前記直流入力信号を前記直流出力信号に変換するための前記手段が、
前記直流入力信号から1つまたは複数の値をサンプリングするための手段と、
前記直流入力信号の前記サンプリングされた電圧に部分的に基づいて最大電力出力を判断するための手段と、
前記直流出力信号の前記電力出力を実質的に最大化するために前記直流入力信号を前記直流出力信号に変換するための前記手段によって受信されるパルス幅変調信号を調整するための手段と
をさらに含む、請求項21に記載のワイヤレス電力受信機。 - サンプリングされた前記1つまたは複数の値が、前記直流入力信号の電流と前記直流入力信号の電圧とのうちの1つまたは複数である、請求項25に記載のワイヤレス電力受信機。
- 前記交流インピーダンスを変更するための前記手段と、サンプリングするための前記手段と、前記最大電力出力を判断するための前記手段と、前記パルス幅変調信号を調整するための前記手段とが、プロセッサ手段内に含まれる、請求項25に記載のワイヤレス電力受信機。
- 前記直流入力信号を直流出力信号に変換するための前記手段が、バック変換のための手段またはブースト変換のための手段のうちの少なくとも1つを含み、前記直流入力信号を前記直流出力信号に変換するための前記手段が、
前記直流入力信号の前記電圧をサンプリングするための手段と、
前記直流出力信号を受信するように構成された受信機デバイスにとって最適ではないが許容できる電力レベルに前記直流出力信号上の前記電力出力を低減するために、前記直流入力信号を前記直流出力信号に変換するための前記手段によってパルス幅変調信号を調整するための手段と
をさらに含む、請求項21に記載のワイヤレス電力受信機。 - 前記直流入力信号の電圧と、前記直流入力信号の電流と、前記直流出力信号の電圧と、
前記直流出力信号の電流とのうちの少なくとも1つから1つまたは複数の値をサンプリングするための手段と、
前記サンプリングされた値に部分的に基づいて前記最大電力出力を判断するための手段と
をさらに含む、請求項21に記載のワイヤレス電力受信機。 - 装置に、
ワイヤレス電力受信機のためのワイヤレス電力信号を生成するために、結合モード領域中で近距離場放射を結合することと、
前記ワイヤレス電力信号を直流入力信号に整流することと、
前記直流入力信号を直流出力信号に変換することと、
前記直流入力信号および前記直流出力信号に部分的に基づいて直流直流変換器からの前記直流出力信号の電力出力を調整することによって前記ワイヤレス電力受信機の交流インピーダンスを変更することと
を行わせる、前記装置のプロセッサによって実行可能な命令を含む、コンピュータ可読記憶媒体。 - 前記ワイヤレス電力受信機の前記交流インピーダンスを変更することが、前記直流入力信号の電圧と、前記直流入力信号の電流と、前記直流出力信号の電圧と、前記直流出力信号の電流とのうちの1つまたは複数に部分的に基づいて前記直流直流変換器からの前記直流出力信号の前記電力出力を調整することを含む、請求項30に記載のコンピュータ可読記憶媒体。
- サンプリングされた値は、前記直流出力信号の電圧および前記直流出力信号の電流の少なくとも1つを含む、請求項30に記載のコンピュータ可読記憶媒体。
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