JP6740894B2 - 金属異物検出装置、ワイヤレス給電装置、ワイヤレス受電装置、及びワイヤレス電力伝送システム - Google Patents
金属異物検出装置、ワイヤレス給電装置、ワイヤレス受電装置、及びワイヤレス電力伝送システム Download PDFInfo
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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
-
- 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
-
- 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
- H02J50/402—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices the two or more transmitting or the two or more receiving devices being integrated in the same unit, e.g. power mats with several coils or antennas with several sub-antennas
-
- 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
-
- 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
- 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
- H02M3/01—Resonant DC/DC converters
-
- 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
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
- H02M3/33573—Full-bridge at primary side of an isolation transformer
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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
- H02M1/00—Details of apparatus for conversion
- H02M1/0048—Circuits or arrangements for reducing losses
- H02M1/0054—Transistor switching losses
- H02M1/0058—Transistor switching losses by employing soft switching techniques, i.e. commutation of transistors when applied voltage is zero or when current flow is zero
-
- 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
- H02M1/00—Details of apparatus for conversion
- H02M1/0064—Magnetic structures combining different functions, e.g. storage, filtering or transformation
-
- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/06—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode
-
- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/4815—Resonant converters
-
- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/4815—Resonant converters
- H02M7/4818—Resonant converters with means for adaptation of resonance frequency, e.g. by modification of capacitance or inductance of resonance circuits
-
- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal 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
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal 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, e.g. single switched pulse inverters
- H02M7/5387—Conversion of dc power input into ac power output without possibility of reversal 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, e.g. single switched pulse inverters in a bridge configuration
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Life Sciences & Earth Sciences (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Geophysics And Detection Of Objects (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Description
本発明は
2 負荷
10 ワイヤレス給電装置
11 直流電源
12 電力変換器
13 給電コイル部
14 金属異物検出装置
15 ノイズ検出部
20 ワイヤレス受電装置
21 受電コイル部
22 整流器
30 16ビットタイマー/カウンター
31 比較器
32 設定値レジスタ
40,41 nチャンネル型MOSFET
42 キャパシタ
43 スイッチ
120 スイッチ駆動部
140 検出部
141 検出切替スイッチ
142 フィルタ回路
143 整流回路
144 積分回路
145 判定回路
146 波数検出回路
146a 波形整形回路
146b カウンタ回路
147 制御回路
148 駆動回路
148a スイッチング回路
148b 電源
149 共振コンデンサスイッチ
C0 平滑用キャパシタ
C1 給電側コンデンサ
C2 受電側コンデンサ
C3 コンデンサ
CA コイルアレイ
CIV 基準積分値
D1〜D4 ダイオード
IV 積分値
L1 給電コイル
L2 受電コイル
L3 アンテナコイル
RC 共振回路
SG1〜SG4 制御信号
SW1〜SW4 スイッチング素子
T1 パルス印加時間カウント用タイマー
T2 スイッチ駆動時間カウント用タイマー
T3 遅延タイマー
Claims (9)
- アンテナコイルと、
前記アンテナコイルとともに共振回路を形成するコンデンサと、
前記共振回路に電圧を印加することにより、前記共振回路に振動信号を発生させる駆動部と、
前記振動信号から前記共振回路の共振周波数を含む周波数帯域を取り出すフィルタ回路と、
前記フィルタ回路から出力された振動信号の波形に基づいて金属異物の有無を判定する判定部と、
前記共振回路内に挿入された第1のスイッチと、
前記第1のスイッチの開閉状態を制御する制御部と、を備え、
前記制御部は、前記駆動部による前記共振回路への電圧の印加の開始から終了までの任意のタイミングにて、前記第1のスイッチを閉状態にするよう構成されることを特徴とする金属異物検出装置。 - 前記制御部は、前記駆動部による前記共振回路への電圧の印加の開始又は終了と同時に、前記第1のスイッチを閉状態にするよう構成されることを特徴とする請求項1に記載の金属異物検出装置。
- 前記駆動部と前記共振回路の間に挿入された第2のスイッチ、をさらに備え、
前記制御部は、前記第1のスイッチの開閉状態を制御するためのスイッチ駆動信号を生成するスイッチ駆動信号生成回路と、前記第2のスイッチの開閉状態を制御するためのパルス印加信号を生成するパルス印加信号生成回路と、を有し、
前記スイッチ駆動信号生成回路は、前記パルス印加信号が非活性化したことに応じて前記スイッチ駆動信号を活性化するとともにタイマーを開始し、タイマー値が所定値に達した場合に前記スイッチ駆動信号を非活性とするよう構成されることを特徴とする請求項2に記載の金属異物検出装置。 - 前記駆動部と前記共振回路の間に挿入された第2のスイッチ、をさらに備え、
前記制御部は、前記第1のスイッチの開閉状態を制御するためのスイッチ駆動信号を生成するスイッチ駆動信号生成回路と、前記第2のスイッチの開閉状態を制御するためのパルス印加信号を生成するパルス印加信号生成回路と、前記パルス印加信号の入力を受ける遅延回路と、を有し、
前記遅延回路は、前記パルス印加信号が活性化したことに応じて該遅延回路の出力信号を活性化するとともにタイマーを開始し、タイマー値が所定値に達した場合に前記出力信号を非活性とし、
前記スイッチ駆動信号生成回路は、前記出力信号が非活性となったことに応じて前記スイッチ駆動信号を活性化するとともにタイマーを開始し、タイマー値が所定値に達した場合に前記スイッチ駆動信号を非活性とするよう構成されることを特徴とする請求項1に記載の金属異物検出装置。 - 前記駆動部は、前記制御部の一部分を構成する回路の駆動電源として使用されることを特徴とする請求項1乃至4のいずれか一項に記載の金属異物検出装置。
- 前記駆動部と前記共振回路の間に挿入された第2のスイッチ、をさらに備え、
前記制御部は、前記第1のスイッチの開閉状態を制御するためのスイッチ駆動信号を生成するスイッチ駆動信号生成回路と、前記第2のスイッチの開閉状態を制御するためのパルス印加信号を生成するパルス印加信号生成回路と、を有し、
前記スイッチ駆動信号生成回路及び前記パルス印加信号生成回路の駆動電源は共通であることを特徴とする請求項1又は2に記載の金属異物検出装置。 - 給電コイルから受電コイルにワイヤレスにて電力伝送するワイヤレス給電装置であって、
前記給電コイルと、
請求項1乃至6のいずれか一項に記載の金属異物検出装置と
を備えることを特徴とするワイヤレス給電装置。 - 給電コイルから受電コイルにワイヤレスにて電力伝送するワイヤレス受電装置であって、
前記受電コイルと、
請求項1乃至6のいずれか一項に記載の金属異物検出装置と
を備えることを特徴とするワイヤレス受電装置。 - 給電コイルから受電コイルにワイヤレスにて電力伝送するワイヤレス電力伝送システムであって、
前記給電コイルを有するワイヤレス給電装置と、
前記受電コイルを有するワイヤレス受電装置と、を備え、
前記ワイヤレス給電装置および前記ワイヤレス受電装置の少なくとも一方は、請求項1乃至6のいずれか一項に記載の金属異物検出装置を備えることを特徴とするワイヤレス電力伝送システム。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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JP2016253816A JP6740894B2 (ja) | 2016-12-27 | 2016-12-27 | 金属異物検出装置、ワイヤレス給電装置、ワイヤレス受電装置、及びワイヤレス電力伝送システム |
CN201780081085.2A CN110121665B (zh) | 2016-12-27 | 2017-12-20 | 金属异物检测装置、无线供电、受电装置、电力传输*** |
PCT/JP2017/045742 WO2018123766A1 (ja) | 2016-12-27 | 2017-12-20 | 金属異物検出装置、ワイヤレス給電装置、ワイヤレス受電装置、及びワイヤレス電力伝送システム |
US16/469,498 US11152821B2 (en) | 2016-12-27 | 2017-12-20 | Metallic foreign object detector, wireless power transmitting device, wireless power receiving device, and wireless power transmission system |
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JP6753307B2 (ja) * | 2016-12-27 | 2020-09-09 | Tdk株式会社 | ワイヤレス給電装置、ワイヤレス受電装置、及びワイヤレス電力伝送システム |
JP6740894B2 (ja) * | 2016-12-27 | 2020-08-19 | Tdk株式会社 | 金属異物検出装置、ワイヤレス給電装置、ワイヤレス受電装置、及びワイヤレス電力伝送システム |
US10938255B2 (en) * | 2018-12-28 | 2021-03-02 | Integrated Device Technology, Inc. | Wireless power transmission using a capacitive sensor |
CN110103744B (zh) * | 2019-06-21 | 2023-11-21 | 天津工业大学 | 用于电动汽车无线充电***的金属异物驱离装置 |
US11874423B2 (en) | 2019-10-25 | 2024-01-16 | Witricity Corporation | Circuit for object detection and vehicle position determination |
JP2023041072A (ja) | 2019-12-27 | 2023-03-24 | Tdk株式会社 | 異物検出装置、送電装置、受電装置および電力伝送システム |
JP2023041074A (ja) * | 2019-12-27 | 2023-03-24 | Tdk株式会社 | 異物検出装置、送電装置、受電装置および電力伝送システム |
DE112020006434T5 (de) | 2020-03-03 | 2022-10-20 | Microchip Technology Incorporated | Erkennung von objekten mit geringer leistung in drahtlosenmehrspulenladeystemen und zugehörige systeme, verfahren und vorrichtungen |
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CN114189063A (zh) * | 2020-09-11 | 2022-03-15 | 登丰微电子股份有限公司 | 金属异物侦测装置 |
CN113638191B (zh) * | 2021-05-29 | 2024-04-05 | 中国电波传播研究所(中国电子科技集团公司第二十二研究所) | 一种基于脉冲电磁感应的洗衣机金属异物检测***及方法 |
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JP6740895B2 (ja) * | 2016-12-27 | 2020-08-19 | Tdk株式会社 | 金属異物検出装置、ワイヤレス給電装置、ワイヤレス受電装置、及びワイヤレス電力伝送システム |
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JP6753307B2 (ja) * | 2016-12-27 | 2020-09-09 | Tdk株式会社 | ワイヤレス給電装置、ワイヤレス受電装置、及びワイヤレス電力伝送システム |
JP6834799B2 (ja) * | 2017-06-20 | 2021-02-24 | Tdk株式会社 | 金属異物検出装置、ワイヤレス給電装置、ワイヤレス受電装置、及びワイヤレス電力伝送システム |
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KR102630557B1 (ko) * | 2018-11-16 | 2024-01-26 | 엘지전자 주식회사 | 무선전력 송신장치 |
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