WO2014129182A1 - 異物検出装置、異物検出方法、および非接触充電システム - Google Patents
異物検出装置、異物検出方法、および非接触充電システム Download PDFInfo
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- WO2014129182A1 WO2014129182A1 PCT/JP2014/000832 JP2014000832W WO2014129182A1 WO 2014129182 A1 WO2014129182 A1 WO 2014129182A1 JP 2014000832 W JP2014000832 W JP 2014000832W WO 2014129182 A1 WO2014129182 A1 WO 2014129182A1
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- coil
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- foreign object
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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
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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
-
- 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
- H02J50/005—Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices
Definitions
- the present invention relates to a foreign object detection device, a foreign object detection method, and a non-contact charging system.
- a wireless power transmission system (non-contact charging system) has been developed for non-contact charging to an electric vehicle or the like.
- a power transmission coil and a high-frequency oscillation source are provided on the charging device side, and a power reception coil is provided on the electric vehicle side.
- non-contact and highly efficient power transmission can be realized by using an electromagnetic induction method.
- the high-frequency oscillation source of the charging device is generally composed of an inverter circuit to output a large amount of power, and is not only oscillating frequency but also sufficiently higher than the oscillating frequency such as switching noise because of switching by the rectangular wave of the inverter circuit.
- a frequency component voltage is induced in the detection coil.
- Patent Document 1 describes that the influence on detection is reduced by setting the frequency used for metal detection higher than the frequency of the magnetic field generated from the power transmission coil.
- the radiation resistance of the detection coil increases and the Q value decreases, so that the foreign object detection performance is deteriorated, and the detection coil does not sufficiently function as an inductance, so that the foreign object cannot be detected.
- a power transmission coil used for charging an electric vehicle has a very large dimension (for example, a diameter in the case of a circular coil), it is necessary to arrange many detection coils. At this time, the wiring between the detection coil and the detection circuit is physically long. Also in this case, the wiring operates as a linear antenna such as a dipole antenna and the same problem as described above occurs.
- the present invention suppresses the operation of the wiring as a linear antenna even when the wiring between the detection coil and the detection circuit is long, and a foreign object detection device, a foreign object detection method capable of detecting a foreign object, And it aims at providing a non-contact charge system.
- a foreign object detection device of the present invention includes a detection coil, a transmission circuit that generates an unbalanced signal, and a balanced / unbalanced conversion circuit that converts the unbalanced signal from the transmission circuit into a balanced signal. And a detection circuit that detects a foreign substance by a change in frequency characteristics of reflected power that is a power component reflected from the detection coil.
- the foreign object detection method of the present invention converts an unbalanced signal into a balanced signal, supplies power to the detection coil, and detects the foreign object by changing the frequency characteristics of reflected power, which is a power component reflected from the detection coil. To do.
- the wiring between the detection coil and the detection circuit is long, the wiring does not operate as a linear antenna, and foreign matter can be detected.
- FIG. 4 is an enlarged plan view of a power transmission coil case in FIG. 3. It is an expanded sectional view of the power transmission coil case in FIG. It is a figure which shows the change of the frequency characteristic of the reflected power by the foreign material in this invention. It is a figure which shows the detailed structure of the foreign material detection apparatus in Embodiment 2 of this invention. It is a figure which shows the detailed structure of the foreign material detection apparatus in Embodiment 3 of this invention.
- FIG. 11 is a frequency characteristic diagram of the reflected power of the coil L1 when there is no mutual coupling between the coil L1 and the coil L2 in FIG. 10, where (a) shows a case where there is no foreign matter and rainwater, and (b) shows a foreign matter ( (C) shows the case where there is rainwater.
- FIG. 11 is a frequency characteristic diagram of reflected power of the coil L1 when the short circuit is not used while taking into account the mutual coupling between the coil L1 and the coil L2 in FIG.
- FIG. 11 is a frequency characteristic diagram of reflected power of the coil L1 when a short circuit is used while taking into account the mutual coupling between the coil L1 and the coil L2 in FIG. (B) shows the case where there is a foreign substance (metal), and (c) shows the case where there is rainwater. It is a circuit diagram which shows the detailed structural example of the short circuit in FIG.
- FIG. 1 is a diagram showing a basic configuration of a foreign object detection device 100 of the present invention.
- the transmission circuit 101 generates an unbalanced signal from the voltage source Vg and outputs the unbalanced signal to the balanced / unbalanced conversion circuit 104.
- the balanced / unbalanced conversion circuit 104 converts the unbalanced signal input from the transmission circuit 101 into a balanced signal and outputs it to the detection coil 103.
- the detection circuit 108 detects a foreign object based on a change in frequency characteristics of reflected power, which is a power component reflected from the detection coil 103. Specifically, the foreign object is detected based on the amount of change in the matching frequency of the reflected power.
- FIG. 2 is a diagram illustrating a detailed configuration of the foreign object detection device 100 according to the first embodiment.
- the transmission circuit 101 generates high-frequency power having a predetermined frequency, and outputs high-frequency power to a detection coil 103 described later via a coaxial cable 102 that transmits a high-frequency unbalanced signal.
- the coaxial cable 102 is a transmission line that is shielded around the center conductor by an external conductor.
- the detection coil 103 is a coil that generates a high-frequency magnetic field in order to detect the metal foreign matter 201, and includes n (n is an integer of 2 or more) arranged coils L1, L2,..., Ln. .
- the balanced / unbalanced conversion circuit 104 is connected to a matching circuit 105 (described later) and the coaxial cable 102, converts an unbalanced signal input from the coaxial cable 102 into a balanced signal, and outputs the balanced signal to the matching circuit 105.
- the matching circuit 105 performs impedance matching between the detection coil 103 and the balance-unbalance conversion circuit 104.
- the matching circuit 105 performs impedance conversion of the detection coil 103 so as to match the balanced impedance of the balanced / unbalanced converting circuit 104 at a predetermined matching frequency f0.
- the balance / unbalance conversion circuit 104 and the matching circuit 105 are preferably connected at a location closer to the detection coil 103.
- a foreign object is detected by using a frequency characteristic associated with a change in inductance of the detection coil 103 due to a detection target.
- the wiring connecting between the detection coil 103 and the balance-unbalance conversion circuit 104 and the matching circuit 105 becomes long, the wiring has an inductance component, and the amount of change in the inductance of the detection coil 103 due to the detection target is increased. Get smaller. Therefore, the balance-unbalance conversion circuit 104 and the matching circuit 105 are connected to a location closer to the detection coil 103, so that the foreign object detection performance can be prevented from deteriorating.
- the parasitic capacitance 106 is a parasitic capacitance generated in the detection coil 103, and a capacitance component is generated in parallel in each of the detection coils 103 in the equivalent circuit.
- a dielectric exists in the vicinity of the detection coil 103, the capacitance value of the parasitic capacitance 106 increases. Examples of the dielectric include a power transmission coil case, which will be described later, and rainwater attached on the power transmission coil case.
- the directional coupler 107 outputs an unbalanced signal, which is high-frequency power from the transmission circuit 101, to the balanced / unbalanced conversion circuit 104, extracts a power component reflected from the detection coil 103, and outputs it to a detection circuit 108 described later. Output.
- the detection circuit 108 receives the reflected power extracted by the directional coupler 107 and detects a foreign substance based on the amount of change in the matching frequency that minimizes the reflected power.
- the switch circuit 109 selects and switches a coil to be fed among a plurality of coils L1, L2,..., Ln arranged as the detection coil 103.
- a non-contact charging system is configured by combining the foreign object detection device 100, the power transmission coil 302, and the high-frequency oscillation source 305.
- the high frequency oscillation source 305 supplies high frequency power having a predetermined frequency to the power transmission coil 302 for non-contact charging.
- FIG. 3 is a front view showing an application example of the wireless power transmission system to the vehicle 301.
- FIG. 3 shows an example in which the power transmission coil 302 is mounted on the ground side and the power receiving coil 303 is mounted on the vehicle 301 side.
- the power transmission coil case 304 is formed of a dielectric material such as resin, and houses the power transmission coil 302.
- the detection coil 103 is disposed above the power transmission coil 302 and is housed in the power transmission coil case 304.
- FIG. 4 is an enlarged plan view of the power transmission coil case 304.
- the detection coil 103 is arranged so as to cover the power transmission coil 302 and the periphery thereof without any gap. These detection coils 103 are switched by a switch circuit 109 to detect the power transmission coil 302 and / or the metal foreign matter 201 existing around the coil.
- magnetic field coupling occurs between the detection coil 103 and the power transmission coil 302 as well as the metal foreign matter 201, and a current is induced in the power transmission coil 302 by the detection coil 103. Due to the magnetic field coupling between the detection coil 103 and the power transmission coil 302, the change in the received power due to the metal foreign object 201 becomes small, and the foreign object detection performance deteriorates.
- FIG. 5 is an enlarged cross-sectional view of the power transmission coil case 304.
- the distance between the metal foreign matter 201 and the detection coil 103 for example, the (external) surface of the power transmission coil case 304 and the detection coil 103
- the distance between the power transmission coil 302 and the detection coil 103 for example, the distance between the upper surface of the power transmission coil 302 and the lower surface of the detection coil 103 is b
- the influence of the magnetic field coupling between the detection coil 103 and the power transmission coil 302 is reduced, and deterioration of the foreign object detection performance can be suppressed.
- the unbalanced signal is converted into a balanced signal and supplied to the detection coil 103, and the frequency characteristics of the reflected power from the detection coil 103 change. Thus, foreign matter is detected.
- FIG. 6 is a diagram showing changes in the frequency characteristics of reflected power due to foreign matter. Since electric vehicles may be parked outdoors and charged, it is required that foreign objects can be detected without being affected by the weather. Specifically, it is required that water and metal can be detected separately without being affected by rainwater during rainfall.
- the detection circuit 108 distinguishes and detects the metal foreign object 201 and rainwater by the change of the matching frequency. If the matching frequency f0 when the reflected power is higher than the reference matching frequency f0 with reference to the matching frequency f0 when there is no metallic foreign matter 201 and rainwater, it is determined that the metallic foreign matter 201 is near the detection coil 103. When the matching frequency of the reflected power is lower than the reference matching frequency f0, it is determined that there is rainwater near the detection coil 103.
- the reference matching frequency f0 may be initially set when the foreign object detection device 100 of the present invention is installed. The state where there is no foreign matter such as metal or rainwater at that time may be determined visually or may be confirmed in advance by another detection device or the like. Alternatively, the reference matching frequency f0 may be set when the foreign object detection device 100 of the present invention is shipped.
- the wiring operates as a linear antenna such as a dipole antenna.
- the radiation resistance of the detection coil 103 increases, and the Q value of the detection coil 103 decreases, thereby deteriorating the foreign object detection performance. That is, since the detection coil 103 does not function as an inductance, a problem that foreign matter cannot be detected occurs.
- the power transmission coil 302 used for charging an electric vehicle has a very large dimension (for example, a diameter in the case of a circular coil), it is necessary to dispose many detection coils 103. In this case, the length of the wiring is physically long.
- the detection coil 103 and each circuit are connected by the coaxial cable 102 having a high effect of suppressing the leakage electromagnetic field, and the reflection of the detection coil 103 is reflected.
- a method of detecting a foreign substance based on frequency characteristics of electric power is adopted.
- balanced power is supplied to the detection coil 103 via the balanced / unbalanced conversion circuit 104.
- the power supplied when the power is supplied to the detection coil 103 is transmitted through the shield of the coaxial cable 102, and even when the coaxial cable 102 is electromagnetically long, it can be prevented from operating as a linear antenna.
- the non-contact charging system is configured by combining the foreign object detection device 100 described in the first embodiment, the power transmission coil 302, and the high-frequency oscillation source 305.
- the high frequency oscillation source 305 supplies high frequency power having a predetermined frequency to the power transmission coil 302 for non-contact charging.
- the high-frequency oscillation source 305 transmits a large amount of power, when magnetic field coupling occurs between the detection coil 103 and the power transmission coil 302, a large amount of power is input to the transmission circuit 101, the detection circuit 108, and the switch circuit 109. There is a risk of circuit destruction. For this reason, the frequency of the high frequency power output from the transmission circuit 101 is set to a value higher than the frequency of the high frequency power output from the high frequency oscillation source 305.
- the filter circuit has a characteristic of allowing the frequency of the high frequency power output from the transmission circuit 101 to pass and blocking the frequency of the high frequency power output from the high frequency oscillation source 305.
- the circuit protection filter 110 is disposed between the matching circuit 105 and the parasitic capacitance 106 and connected to the detection coil 103. Thereby, the transmission circuit 101, the detection circuit 108, the switch circuit 109, and the like can be protected.
- FIG. 7 shows an example in which capacitors operating as high-pass filters are connected to both ends of the detection coil 103.
- the dimension of each coil of the detection coil 103 (for example, the diameter in the case of a circular coil) is larger than the dimension of the power transmission coil 302 (for example, the diameter in the case of a circular coil). It is set to be smaller. Thereby, the magnetic coupling between the detection coil 103 and the power transmission coil 302 can be reduced, and the power input to the transmission circuit 101, the detection circuit 108, and the switch circuit 109 can be reduced.
- the two terminals of the detection coil 103 that are not selected are short-circuited by a short circuit 111.
- the short circuit 111 is provided between the matching circuit 105 and the parasitic capacitance 106 is shown.
- the impedance of the detection coil 103 which is not selected changes greatly, and an impedance mismatch state occurs between the detection coil 103 and the balance-unbalance conversion circuit 104. Therefore, it is possible to prevent a current from being induced by mutual coupling in each of the detection coils 103 that are not selected.
- the short circuit 111 is provided via the circuit protection filter 110, that is, between the circuit protection filter 110 and the matching circuit 105, and connected to the detection coil 103. May be. Thereby, it is possible to prevent the short circuit 111 from being broken by a large induced voltage induced in the detection coil 103 by the AC magnetic field generated from the power transmission coil 302.
- FIG. 10 is an equivalent circuit model of the foreign object detection device 300 of FIG.
- the detection coil 103 to the matching circuit 105 are expressed by an equivalent circuit, and the metal foreign matter 201 is expressed by a series circuit of resistance and inductance.
- the metal foreign matter 201 is expressed by a series circuit of resistance and inductance.
- the matching circuit 105 is composed of capacitors connected in series and parallel.
- the balance-side impedance of the balance-unbalance conversion circuit 104 was set to 50 ⁇ , and the detection coil 103 was calculated to be composed of the coil L1 and the coil L2.
- the reference matching frequency f0 when there was no foreign object was adjusted to be 170 MHz.
- FIG. 11A, FIG. 11B, and FIG. 11C show the frequency characteristics of the reflected power of the coil L1 when there is no mutual coupling between the coils constituting the detection coil 103.
- FIG. The matching frequency in the presence of foreign matter (metal) in FIG. 11 (b) is higher than the reference matching frequency f0 in the absence of foreign matter and rainwater in FIG. 11 (a), and there is rainwater in FIG. 11 (c). It can be seen that the matching frequency in this case is lower than the reference matching frequency f0 in the absence of foreign matter and rainwater in FIG.
- FIGS. 11 (a), 12 (b) and 12 (c) show the frequency characteristics of the reflected power of the coil L1 when there is mutual coupling between the coils constituting the detection coil 103.
- FIG. The coupling coefficient k12 due to the magnetic field between the coil L1 and the coil L2 was calculated as ⁇ 0.1. It can be seen that the amount of change in the matching frequency is smaller than in the case of FIGS. 11 (a) to 11 (c).
- 13 (a), 13 (b), and 13 (c) show the coil L1 under the condition that the short circuit 111 of the coil L2 is short-circuited when there is mutual coupling between the coils constituting the detection coil 103. Shows the frequency characteristics of the reflected power. It can be seen that the amount of change in the matching frequency is almost the same as in FIGS. 11 (a) to 11 (c).
- FIG. 14 shows a short circuit 111 using a diode.
- a diode 120 is connected in parallel to both terminals of the detection coil 103, and DC voltages V1 and V2 are applied to both ends of the diode 120 via bias resistors 121 and 122, respectively. By changing the potential difference between the DC voltages V1 and V2, the diode 120 is switched to an on state (short circuit state) or an off state (open state).
- the method for short-circuiting both terminals of the detection coil 103 has been described. However, detection that is not selected by short-circuiting a part of the capacitor of the matching circuit 105 shown in FIG.
- the coil 103 may be in an impedance mismatch state.
- the foreign matter detection device and foreign matter detection method of the present invention can be applied to a foreign matter detection device and foreign matter detection method for a non-contact charger such as a portable device or an electric propulsion vehicle.
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Abstract
Description
図2は、実施の形態1における異物検出装置100の詳細構成を示す図である。送信回路101は、所定の周波数の高周波電力を生成し、高周波の不平衡信号を伝送する同軸ケーブル102などを介して、後述する検出用コイル103へ高周波電力を出力する。同軸ケーブル102は、中心導体の周りを外部導体でシールドされた伝送線路である。検出用コイル103は、金属の異物201を検出するために、高周波の磁界を発生するコイルであり、n(nは2以上の整数)個の配列されたコイルL1,L2,…,Lnからなる。
以下に、図7に示される異物検出装置200における回路破壊防止について説明する。
以下に、図8に示される異物検出装置300における検出用コイル103を構成するコイル間の相互結合低減について説明する。
101 送信回路
102 同軸ケーブル
103 検出用コイル
104 平衡不平衡変換回路
105 整合回路
106 寄生容量
107 方向性結合器
108 検出回路
109 スイッチ回路
110 回路保護フィルタ
111 短絡回路
120 ダイオード
121,122 バイアス抵抗
201 金属の異物
301 車両
302 送電コイル
303 受電コイル
304 送電コイルケース
305 高周波発振源
Claims (7)
- 検出用コイルと、
不平衡信号を生成する送信回路と、
前記送信回路からの不平衡信号を平衡信号へ変換する平衡不平衡変換回路と、
前記検出用コイルから反射された電力成分である反射電力の周波数特性の変化により異物を検出する検出回路とを備えた異物検出回路。 - 請求項1記載の異物検出装置において、
前記検出回路は、前記反射電力の整合周波数の変化量により異物を検出する異物検出装置。 - 請求項1記載の異物検出装置において、
前記検出回路は、基準整合周波数に対して、前記反射電力の整合周波数の方が高い場合には異物が金属であると検出し、前記反射電力の整合周波数の方が低い場合には異物が水であると検出する異物検出装置。 - 請求項1記載の異物検出装置において、
前記検出用コイルは複数のコイルで構成され、
前記検出用コイルのうち選択されないコイルの両端子を短絡する短絡回路をさらに備えた異物検出装置。 - 請求項1~3のいずれか1項に記載の異物検出装置において、
送電コイルを収納する送電コイルケースをさらに備え、
前記検出用コイルは前記送電コイルの上方に配置されて前記送電コイルケースの中に収納され、
前記送電コイルケースの表面と前記検出用コイルとの間の距離が前記送電コイルと前記検出用コイルとの間の距離に比べて短くなるように、前記検出用コイルが配置された異物検出装置。 - 請求項1~5のいずれか1項に記載の異物検出装置と、
送電コイルと、
前記送電コイルに所定の周波数の高周波電力を供給する高周波発振源とを備えた非接触充電システム。 - 不平衡信号を平衡信号に変換して検出用コイルへ給電し、
前記検出用コイルから反射された電力成分である反射電力の周波数特性の変化により異物を検出する異物検出方法。
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP14754070.2A EP2961037B1 (en) | 2013-02-19 | 2014-02-18 | Foreign object detection device, foreign object detection method, and non-contact charging system |
| JP2015501336A JP6273616B2 (ja) | 2013-02-19 | 2014-02-18 | 異物検出装置および非接触充電システム |
| CN201480008199.0A CN104981966B (zh) | 2013-02-19 | 2014-02-18 | 异物检测装置、异物检测方法以及非接触充电系统 |
| US14/830,691 US9933539B2 (en) | 2013-02-19 | 2015-08-19 | Foreign object detection device, foreign object detection method, and non-contact charging system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-029602 | 2013-02-19 | ||
| JP2013029602 | 2013-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US14/830,691 Continuation US9933539B2 (en) | 2013-02-19 | 2015-08-19 | Foreign object detection device, foreign object detection method, and non-contact charging system |
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| Publication Number | Publication Date |
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| WO2014129182A1 true WO2014129182A1 (ja) | 2014-08-28 |
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| PCT/JP2014/000832 Ceased WO2014129182A1 (ja) | 2013-02-19 | 2014-02-18 | 異物検出装置、異物検出方法、および非接触充電システム |
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| US (1) | US9933539B2 (ja) |
| EP (1) | EP2961037B1 (ja) |
| JP (1) | JP6273616B2 (ja) |
| CN (1) | CN104981966B (ja) |
| WO (1) | WO2014129182A1 (ja) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015192547A (ja) * | 2014-03-28 | 2015-11-02 | 株式会社日本自動車部品総合研究所 | 直動ロボットの無線給電装置 |
| EP3124313A1 (en) * | 2015-07-30 | 2017-02-01 | Panasonic Intellectual Property Management Co., Ltd. | Foreign object detecting device, wireless power transmitting device, and wireless power transmission system |
| JP2019216502A (ja) * | 2018-06-11 | 2019-12-19 | 株式会社ダイヘン | 物体検知装置、物体検知方法及び物体検知プログラム |
| US10627499B2 (en) | 2015-05-22 | 2020-04-21 | Witricity Corporation | Methods and apparatus utilizing digital signal processing of ultra wide band radar signals for living object detection in wireless power transfer applications |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP6395722B2 (ja) * | 2012-12-18 | 2018-09-26 | ヌクレウス サイエンティフィック, インク.Nucleus Scientific, Inc. | ワイヤレス電力転送システムにおける物体検出のための非線形システム識別 |
| JP6152828B2 (ja) * | 2014-06-06 | 2017-06-28 | 株式会社村田製作所 | マルチフェイズ型dc/dcコンバータ |
| US9505315B2 (en) * | 2014-08-04 | 2016-11-29 | Qualcomm Incorporated | Wireless charging based on selective activation of transmit antennas |
| CN108401471B (zh) | 2015-11-19 | 2021-06-25 | 苹果公司 | 感应式电力发射器 |
| CN109952503B (zh) | 2016-07-01 | 2022-09-09 | Lg伊诺特有限公司 | 用于检测异物的方法及其设备和系统 |
| DE102016216939A1 (de) * | 2016-09-07 | 2018-03-22 | Audi Ag | Ladestation, Kraftfahrzeug und Verfahren zum induktiven Laden einer Batterie eines Kraftfahrzeugs |
| EP3293530B1 (en) * | 2016-09-08 | 2022-03-30 | Rohde & Schwarz GmbH & Co. KG | Scanning unit, directional coupler and measurement system |
| 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 |
| CN109283586A (zh) * | 2017-07-20 | 2019-01-29 | 乐金电子研发中心(上海)有限公司 | 一种金属异物检测系统及方法 |
| JP6958733B2 (ja) * | 2018-05-28 | 2021-11-02 | 日産自動車株式会社 | 送電装置、及び送電装置の制御方法 |
| CN109490966B (zh) * | 2018-06-15 | 2020-11-03 | 中国科学院地质与地球物理研究所 | 一种大地电磁测量系统 |
| CN112311108B (zh) * | 2019-07-26 | 2024-02-09 | 华为技术有限公司 | 金属异物检测方法及装置、无线充电系统、电动车辆 |
| JP7451916B2 (ja) * | 2019-09-25 | 2024-03-19 | オムロン株式会社 | 異物検出装置 |
| EP3840177A1 (en) * | 2019-12-19 | 2021-06-23 | BRUSA Elektronik AG | An object detection apparatus for an inductive charging system |
| CN111146874A (zh) * | 2020-03-06 | 2020-05-12 | 美芯晟科技(北京)有限公司 | 无线充电异物检测方法 |
| CN113092532B (zh) * | 2021-05-07 | 2024-12-27 | 上海太易检测技术有限公司 | 一种适应于多种产品测试的金属检测装置 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03194817A (ja) * | 1989-12-22 | 1991-08-26 | Ochiai Tetsukoujiyou:Kk | 近接センサ |
| JPH0943007A (ja) * | 1994-11-30 | 1997-02-14 | Omron Corp | 検知装置、検知方法、及びセンサ |
| JPH11304764A (ja) * | 1998-04-27 | 1999-11-05 | Omron Corp | 水分センサ |
| JP2012016125A (ja) | 2010-06-30 | 2012-01-19 | Panasonic Electric Works Co Ltd | 非接触給電システム及び非接触給電システムの金属異物検出装置 |
| JP2012249401A (ja) * | 2011-05-27 | 2012-12-13 | Nissan Motor Co Ltd | 非接触給電装置 |
| WO2012173128A1 (ja) * | 2011-06-17 | 2012-12-20 | 三洋電機株式会社 | 充電台 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3484355B2 (ja) | 1998-09-28 | 2004-01-06 | オムロンヘルスケア株式会社 | 生体検知装置 |
| JP2000031808A (ja) * | 1998-07-13 | 2000-01-28 | Omron Corp | 人体近接センサ及び工作機 |
| US20070139152A1 (en) * | 2005-12-21 | 2007-06-21 | Chun-Kong Chan | Balanced transformer having an auxiliary coil |
| US20110074346A1 (en) * | 2009-09-25 | 2011-03-31 | Hall Katherine L | Vehicle charger safety system and method |
| WO2010129369A2 (en) * | 2009-04-28 | 2010-11-11 | Mojo Mobility, Inc. | System and methods for inductive charging, and improvements and uses thereof |
| JP5909714B2 (ja) * | 2009-11-13 | 2016-04-27 | パナソニックIpマネジメント株式会社 | 車両用充給電システム |
| JP4996722B2 (ja) * | 2010-06-30 | 2012-08-08 | 株式会社東芝 | 電力伝送システム及び送電装置 |
| DE102011105063B4 (de) * | 2011-06-21 | 2023-09-21 | Airbus Operations Gmbh | Detektion eines Fremdkörpers in einem induktiven Übertragungsweg |
-
2014
- 2014-02-18 JP JP2015501336A patent/JP6273616B2/ja not_active Expired - Fee Related
- 2014-02-18 CN CN201480008199.0A patent/CN104981966B/zh active Active
- 2014-02-18 WO PCT/JP2014/000832 patent/WO2014129182A1/ja not_active Ceased
- 2014-02-18 EP EP14754070.2A patent/EP2961037B1/en active Active
-
2015
- 2015-08-19 US US14/830,691 patent/US9933539B2/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03194817A (ja) * | 1989-12-22 | 1991-08-26 | Ochiai Tetsukoujiyou:Kk | 近接センサ |
| JPH0943007A (ja) * | 1994-11-30 | 1997-02-14 | Omron Corp | 検知装置、検知方法、及びセンサ |
| JPH11304764A (ja) * | 1998-04-27 | 1999-11-05 | Omron Corp | 水分センサ |
| JP2012016125A (ja) | 2010-06-30 | 2012-01-19 | Panasonic Electric Works Co Ltd | 非接触給電システム及び非接触給電システムの金属異物検出装置 |
| JP2012249401A (ja) * | 2011-05-27 | 2012-12-13 | Nissan Motor Co Ltd | 非接触給電装置 |
| WO2012173128A1 (ja) * | 2011-06-17 | 2012-12-20 | 三洋電機株式会社 | 充電台 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP2961037A4 |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015192547A (ja) * | 2014-03-28 | 2015-11-02 | 株式会社日本自動車部品総合研究所 | 直動ロボットの無線給電装置 |
| US10627499B2 (en) | 2015-05-22 | 2020-04-21 | Witricity Corporation | Methods and apparatus utilizing digital signal processing of ultra wide band radar signals for living object detection in wireless power transfer applications |
| EP3124313A1 (en) * | 2015-07-30 | 2017-02-01 | Panasonic Intellectual Property Management Co., Ltd. | Foreign object detecting device, wireless power transmitting device, and wireless power transmission system |
| US20170033615A1 (en) * | 2015-07-30 | 2017-02-02 | Panasonic Intellectual Property Management Co., Ltd. | Foreign object detecting device, wireless power transmitting device, and wireless power transmission system |
| CN106410991A (zh) * | 2015-07-30 | 2017-02-15 | 松下知识产权经营株式会社 | 异物检测装置、无线送电装置以及无线电力传输系统 |
| US10630115B2 (en) | 2015-07-30 | 2020-04-21 | Panasonic Intellectual Property Management Co., Ltd. | Foreign object detecting device, wireless power transmitting device, and wireless power transmission system |
| CN106410991B (zh) * | 2015-07-30 | 2021-08-27 | 松下知识产权经营株式会社 | 异物检测装置、无线送电装置以及无线电力传输系统 |
| JP2019216502A (ja) * | 2018-06-11 | 2019-12-19 | 株式会社ダイヘン | 物体検知装置、物体検知方法及び物体検知プログラム |
| JP7043351B2 (ja) | 2018-06-11 | 2022-03-29 | 株式会社ダイヘン | 物体検知装置、物体検知方法及び物体検知プログラム |
Also Published As
| Publication number | Publication date |
|---|---|
| US20150355360A1 (en) | 2015-12-10 |
| JPWO2014129182A1 (ja) | 2017-02-02 |
| EP2961037A4 (en) | 2016-07-06 |
| CN104981966A (zh) | 2015-10-14 |
| JP6273616B2 (ja) | 2018-02-07 |
| EP2961037A1 (en) | 2015-12-30 |
| US9933539B2 (en) | 2018-04-03 |
| EP2961037B1 (en) | 2017-06-28 |
| CN104981966B (zh) | 2018-08-03 |
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