JP7348741B2 - 無線で電力を伝送する装置と方法 - Google Patents
無線で電力を伝送する装置と方法 Download PDFInfo
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- JP7348741B2 JP7348741B2 JP2019067736A JP2019067736A JP7348741B2 JP 7348741 B2 JP7348741 B2 JP 7348741B2 JP 2019067736 A JP2019067736 A JP 2019067736A JP 2019067736 A JP2019067736 A JP 2019067736A JP 7348741 B2 JP7348741 B2 JP 7348741B2
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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
- H02J50/10—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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
- G01V3/10—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
- G01V3/101—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils by measuring the impedance of the search coil; by measuring features of a resonant circuit comprising the search coil
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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
-
- 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
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
Description
Claims (10)
- 共振回路の動作周波数を変えながら共振周波数を測定する段階と、
前記測定された共振周波数を基準周波数と比較する段階と、
前記測定された共振周波数が前記基準周波数より低いとき、無線で電力を伝送する段階と、を含み、
前記基準周波数は、前記共振回路の自己共振周波数、受信装置について測定した第1共振周波数、基準対象物について測定した第2共振周波数及び前記受信装置と前記基準対象物に対して測定した第3共振周波数の内、二以上を用いて決定されることを特徴とする、無線電力伝送装置の電力伝送方法。 - 前記測定された共振周波数が前記基準周波数より高いとき、電力を伝送しなく、異物があることを知らせる段階をさらに含む、請求項1に記載の無線電力伝送装置の電力伝送方法。
- 前記基準周波数、前記自己共振周波数及び無線電力伝送装置に対象物がない状態で自己共振周波数で共振回路を動作させるとき、前記共振回路に含まれたコイルに印加される基準電圧が、前記無線電力伝送装置を出荷する過程に貯蔵される、請求項1に記載の無線電力伝送装置の電力伝送方法。
- 前記測定された共振周波数と前記自己共振周波数の差が第1所定値以下である場合、前記共振周波数で前記共振回路を駆動する際、前記コイルに印加される第1電圧と前記基準電圧を比較する段階と、
前記基準電圧と前記第1電圧の差が第2所定値以上のとき、電力を伝送しなく、異物が有ることを知らせる段階と、をさらに含む、請求項3に記載の無線電力伝送装置の電力伝送方法。 - 前記基準電圧と前記第1電圧の差が前記第2所定値以下であるとき、前記無線電力伝送装置の上に何もないと判断する、請求項4に記載の無線電力伝送装置の電力伝送方法。
- 直流電源を交流に変換するためのインバータ、受信装置の2次コイルとの磁気誘導結合によって電力を伝送するための1次コイルを含む共振回路、及び前記1次コイルに印加される出力電圧を測定するためのセンシング部を含む電力変換部と、
前記共振回路の動作周波数を変えながら、前記センシング部を通じて測定する出力電圧に基づいて共振周波数を測定し、前記測定された共振周波数を基準周波数と比較し、前記測定された共振周波数が前記基準周波数より低いとき、前記インバータの動作を制御して、前記受信装置への無線電力伝送を制御するための制御部と、を含むよう構成され、
前記基準周波数は、前記共振回路の自己共振周波数、前記受信装置に対し測定した第1共振周波数、基準対象物について測定した第2共振周波数及び前記受信装置と前記基準対象物に対して測定した第3共振周波数の内、複数を用いて決定されることを特徴とする、無線電力伝送装置。 - 前記制御部は、前記測定された共振周波数が前記基準周波数より高いとき、前記受信装置に電力を伝送しなく、異物が有ることを知らせる、請求項6に記載の無線電力伝送装置。
- 前記基準周波数、前記自己共振周波数及び無線電力伝送装置に対象物がない状態で自己共振周波数で共振回路を動作させるとき、前記1次コイルに印加される基準電圧が前記無線電力伝送装置を出荷する過程で貯蔵される、請求項6に記載の無線電力伝送装置。
- 前記制御部は、前記測定された共振周波数と前記自己共振周波数の差が第1所定値以下である場合、前記共振周波数で共振回路を駆動する時、前記1次コイルに印加される第1電圧と前記基準電圧を比較し、前記基準電圧と前記第1電圧の差が第2所定値以上の時、前記受信装置に電力を伝送しなく、異物が有ることを知らせる、請求項8に記載の無線電力伝送装置。
- 前記制御部は、前記基準電圧と前記第1電圧の差が前記第2所定値以下である時、前記無線電力伝送装置の上に何もないと判断する、請求項9に記載の無線電力伝送装置。
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KR (1) | KR102554226B1 (ja) |
CN (1) | CN110875638A (ja) |
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US10958110B2 (en) * | 2019-05-28 | 2021-03-23 | Aira, Inc. | Parallel voltage and current multiple amplitude shift key demodulation |
CN114421639A (zh) * | 2020-10-13 | 2022-04-29 | 宁波微鹅电子科技有限公司 | 无线电能发射端及控制方法 |
FR3117220B1 (fr) * | 2020-12-03 | 2022-10-21 | Continental Automotive Gmbh | Procede de detection d’un objet metallique parasite sur une surface de charge et dispositif de charge associe |
CN112910109A (zh) * | 2021-01-20 | 2021-06-04 | 宁波方太厨具有限公司 | 一种无源传感系统的工作方法及应用该方法的系统 |
CN117175719A (zh) * | 2022-05-25 | 2023-12-05 | 荣耀终端有限公司 | 一种无线充电装置、电子设备及无线充电控制方法 |
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KR20200027304A (ko) | 2020-03-12 |
CN110875638A (zh) | 2020-03-10 |
US10819163B2 (en) | 2020-10-27 |
KR102554226B1 (ko) | 2023-07-10 |
JP2020039245A (ja) | 2020-03-12 |
US20200076245A1 (en) | 2020-03-05 |
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