WO2013054800A1 - ワイヤレス電力伝送システム - Google Patents
ワイヤレス電力伝送システム Download PDFInfo
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- WO2013054800A1 WO2013054800A1 PCT/JP2012/076162 JP2012076162W WO2013054800A1 WO 2013054800 A1 WO2013054800 A1 WO 2013054800A1 JP 2012076162 W JP2012076162 W JP 2012076162W WO 2013054800 A1 WO2013054800 A1 WO 2013054800A1
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 214
- 230000008878 coupling Effects 0.000 claims abstract description 13
- 238000010168 coupling process Methods 0.000 claims abstract description 13
- 238000005859 coupling reaction Methods 0.000 claims abstract description 13
- 239000012212 insulator Substances 0.000 claims abstract description 8
- 238000004804 winding Methods 0.000 claims description 35
- 230000007257 malfunction Effects 0.000 abstract description 8
- 230000004048 modification Effects 0.000 description 21
- 238000012986 modification Methods 0.000 description 21
- 238000010586 diagram Methods 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 230000005684 electric field Effects 0.000 description 7
- 230000003071 parasitic effect Effects 0.000 description 7
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001413 cellular effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000012905 input function Methods 0.000 description 1
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Classifications
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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
- H02J50/05—Circuit arrangements or systems for wireless supply or distribution of electric power using capacitive coupling
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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
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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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- H02J7/025—
-
- 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
- H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
Definitions
- the present invention relates to a wireless power transmission system that transmits power from a power transmission device to a power reception device mounted on the power transmission device.
- a magnetic field coupling type power transmission system in which power is transmitted from a primary coil of a power transmission apparatus to a secondary coil of a power reception apparatus using a magnetic field.
- this system when electric power is transmitted by magnetic coupling, since the magnitude of magnetic flux passing through each coil greatly affects the electromotive force, high accuracy is required for the relative positional relationship between the primary coil and the secondary coil. Moreover, since the coil is used, it is difficult to reduce the size of the apparatus.
- the power receiving device examples include electronic devices such as a mobile phone and a PDA (Personal Digital Assistant). Recently, a capacitive input unit (touch panel) with good operability is used for these electronic devices. There is a lot to be done.
- the power receiving device includes a touch panel, the power receiving device may be placed on the power transmitting device, and the touch panel may be operated while being charged.
- the power receiving device is formed on the active electrode of the power transmitting device and the power receiving device. The power receiving device may malfunction due to the electric field generated.
- a wireless power transmission system includes a power transmission side active electrode, a power transmission side passive electrode, a voltage generation circuit for applying a voltage between the power transmission side active electrode and the power transmission side passive electrode, and a power transmission side connected to a reference potential
- a power transmission device having a reference potential electrode, a power receiving side active electrode, a power receiving side passive electrode, a load circuit connected between the power receiving side active electrode and the power receiving side passive electrode, and a power receiving side reference potential connected to the reference potential
- a power receiving device having an electrode, wherein the power transmitting side passive electrode and the power receiving side passive electrode face each other, and the power transmitting side reference potential electrode and the power receiving side reference potential electrode face each other, and the power transmitting side active electrode
- the power receiving side active electrode is opposed and capacitively coupled via an insulator, whereby the power transmission device Characterized by power transmission to et the power receiving device.
- This configuration enables high voltage transmission and efficient power transmission.
- the step-down transformer includes a lead terminal of a primary winding, the lead terminal is connected to the power receiving side reference potential electrode, and the voltage across the primary winding is used as the power receiving side active voltage.
- the structure provided in the voltage dividing point which voltage-divides so that it may be in inverse proportion to the area ratio of an electrode and the said power receiving side passive electrode may be sufficient.
- the reference potential on the power transmission device side can be stabilized.
- the power transmission side active electrode, the power transmission side passive electrode, and the power transmission side reference potential electrode are provided on a first plane, and the power reception side active electrode and the power reception side passive electrode
- the power receiving side reference potential electrode may be provided on a second plane facing the first plane at a predetermined interval.
- the power transmitting side active electrode, the power transmitting side passive electrode, and the power transmitting side reference potential electrode are rectangular electrodes provided along a predetermined direction, and the power receiving side active electrode
- the electrode, the power receiving side passive electrode, and the power receiving side reference potential electrode may be rectangular electrodes provided along the predetermined direction.
- the power transmission side active electrode and the power reception side active electrode are arranged to face each other, and the power transmission side passive electrode and the power reception side passive electrode are the power transmission side active electrode and the power reception side active electrode, respectively.
- the power transmission side reference potential electrode and the power reception side reference potential electrode are arranged such that the power transmission side active electrode and the power reception side active electrode, and the power transmission side passive electrode and the power reception side passive electrode, respectively. It may be configured to be opposed to each other.
- the reference potential of the power transmission device may be connected to an external ground.
- the reference potential on the power receiving device side can be further stabilized.
- the power transmission side reference potential electrode and the power reception side reference electrode may be coupled in a DC manner.
- an active electrode 21, a reference potential electrode 22, and a passive electrode 23 are provided in order along the longitudinal direction of the back surface (hereinafter referred to as the height direction of the power receiving device 201). That is, the reference potential electrode 22 is sandwiched between the active electrode 21 and the passive electrode 23 in the height direction.
- the active electrode 21, the reference potential electrode 22, and the passive electrode 23 are all substantially square-shaped, and when the power receiving apparatus 201 is placed on the power transmitting apparatus 101, an active electrode 11 and a reference that will be described later provided on the power transmitting apparatus 101.
- the potential electrode 12 and the passive electrode 13 are opposed to each other through an insulator.
- the insulator here is a plastic constituting the casing of the power transmitting device and the power receiving device, or an insulating gas such as air or a vacuum, and is interposed between the opposing electrodes for capacitive coupling. That's fine.
- an active electrode 11, a reference potential electrode 12, and a passive electrode 13 are provided along the longitudinal direction of the placement surface 10A (hereinafter referred to as the height direction of the power transmission device 101).
- the active electrode 11, the reference potential electrode 12, and the passive electrode 13 are all substantially square, and when the power receiving device 201 is placed on the power transmission device 101, the active electrode 21, the reference potential electrode 22, and the power transmission device 101 side It faces the passive electrode 23 via an insulator.
- An AC voltage obtained by converting and boosting a DC voltage supplied via an AC adapter (not shown) is applied between the active electrode 11 and the passive electrode 13.
- the reference potential electrode 12 is connected to the reference potential of the power transmission apparatus 101, and the reference potential electrode 22 is connected to the reference potential of the power reception apparatus 201. Then, the reference potential electrodes 12 and 22 face each other and are coupled by electric field, so that the reference potential of the power receiving apparatus 201 is connected to the reference potential of the power transmission apparatus 101.
- the reference potential on the power receiving device 201 side can be suppressed by approximating the reference potential on the power receiving apparatus 201 side to the reference potential of the power transmitting device 101 via the reference potential electrode 22.
- the reference potential electrode 22 is preferably coupled to a reference potential on the power receiving apparatus 201 side via a parasitic capacitance or the like (not shown).
- the arrangement of the electrodes (active electrode, reference potential electrode, and passive electrode) of the power transmission device 101 and the power reception device 201 can be changed as appropriate.
- 7 to 11 are diagrams showing modifications of the arrangement of the active electrode, the reference potential, and the passive electrode.
- the active electrode 11 (21) and the passive electrode 13 (23) shown in FIG. 7A have a substantially square shape and are arranged in parallel.
- the reference potential electrode 12 (22) has a rectangular shape whose longitudinal direction is the arrangement direction, and covers the active electrode 11 (21) and the passive electrode 13 (23).
- the active electrode 11 (21) and the passive electrode 13 (23) are covered with the reference potential electrode 12 (22), thereby generating the parasitic capacitance due to the active electrode 11 (21) and the passive electrode 13 (23). It can be suppressed and its influence can be reduced.
Abstract
Description
11-アクティブ電極
12-基準電位電極
13-パッシブ電極
20-筐体
21-アクティブ電極
22-基準電位電極
23-パッシブ電極
101-送電装置
201-受電装置
Claims (21)
- 送電側アクティブ電極、送電側パッシブ電極、前記送電側アクティブ電極及び送電側パッシブ電極間に電圧を印加する電圧発生回路、並びに、基準電位に接続された送電側基準電位電極を有する送電装置と、
受電側アクティブ電極、受電側パッシブ電極、前記受電側アクティブ電極及び受電側パッシブ電極の間に接続される負荷回路、および、基準電位に接続された受電側基準電位電極を有する受電装置と、
を備え、
前記送電側パッシブ電極および前記受電側パッシブ電極が対向し、かつ、前記送電側基準電位電極および前記受電側基準電位電極が対向すると共に、前記送電側アクティブ電極および前記受電側アクティブ電極が絶縁体を介して対向して容量結合することにより、前記送電装置から前記受電装置へ電力伝送する、
ワイヤレス電力伝送システム。 - 前記受電側アクティブ電極は、前記受電側パッシブ電極より高電位側となる電極であり、前記受電装置側の基準電位電極は、前記受電側アクティブ電極の電位と前記受電側パッシブ電極の電位との間の電位であり、
前記送電側アクティブ電極は、前記送電側パッシブ電極より高電位側となる電極であり、前記送電装置側の基準電位電極は、前記受電装置側アクティブ電極の電位と前記送電側パッシブ電極の電位との間の電位である、
請求項1に記載のワイヤレス電力伝送システム。 - 前記電圧発生回路は昇圧トランスをさらに備え、
前記負荷回路は降圧トランスをさらに備える、
請求項1または2に記載のワイヤレス電力伝送システム。 - 前記降圧トランスは、二次巻線の引き出し端子を備え、該引き出し端子が前記受電側基準電位電極に接続されている、
請求項3に記載のワイヤレス電力伝送システム。 - 前記負荷回路は前記受電側基準電位電極に接続されている、
請求項3または4に記載のワイヤレス電力伝送システム。 - 前記降圧トランスの前記引き出し端子は、前記二次巻線の中点に設けられている、
請求項4または5に記載のワイヤレス電力伝送システム。 - 前記降圧トランスは一次巻線の引き出し端子を備え、
前記引き出し端子は、前記受電側基準電位電極に接続され、前記一次巻線の両端電圧を前記受電側アクティブ電極と前記受電側パッシブ電極との面積比に反比例するように分圧する分圧点に設けられている、
請求項3に記載のワイヤレス電力伝送システム。 - 前記昇圧トランスは、二次巻線の引き出し端子を備え、該引き出し端子が前記送電側基準電位電極に接続されている、
請求項3から7の何れか一つに記載のワイヤレス電力伝送システム。 - 前記昇圧トランスの前記引き出し端子は、前記二次巻線の中点に設けられている、
請求項8に記載のワイヤレス電力伝送システム。 - 前記昇圧トランスの前記引き出し端子は、前記二次巻線の両端電圧を前記送電側アクティブ電極と前記送電側パッシブ電極との面積比に反比例するように分圧する分圧点に設けられている、
請求項8に記載のワイヤレス電力伝送システム。 - 前記受電装置は、導電性の筐体を備え、該筐体に前記受電側基準電位電極および前記負荷回路のグランド端子が電気的に接続されている、
請求項3から10の何れか一つに記載のワイヤレス電力伝送システム。 - 前記送電側アクティブ電極、前記送電側パッシブ電極、および前記送電側基準電位電極は、第1平面上に設けられ、
前記受電側アクティブ電極、前記受電側パッシブ電極、および前記受電側基準電位電極は、前記第1平面に対して所定間隔を隔てて対向する第2平面上に設けられている、
請求項1から11の何れか一つに記載のワイヤレス電力伝送システム。 - 前記送電側アクティブ電極、前記送電側パッシブ電極、および前記送電側基準電位電極は、所定方向に沿って設けられた矩形状の電極であり、
前記受電側アクティブ電極、前記受電側パッシブ電極、および前記受電側基準電位電極は、前記所定方向に沿って設けられた矩形状の電極である、
請求項12に記載のワイヤレス電力伝送システム。 - 前記送電側アクティブ電極は円形状の電極であり、
前記送電側パッシブ電極は、前記送電側アクティブ電極と同心で、前記送電側アクティブ電極より径が大きい円環状の電極であり、
前記送電側基準電位電極は、前記送電側アクティブ電極と同心で、前記送電側パッシブ電極より径が大きい円環状の電極であり、
前記受電側アクティブ電極は円形状の電極であり、
前記受電側パッシブ電極は、前記受電側アクティブ電極と同心で、前記受電側アクティブ電極より径が大きい円環状の電極であり、
前記受電側基準電位電極は、前記受電側アクティブ電極と同心で、前記受電側パッシブ電極より径が大きい円環状の電極である、
請求項12に記載のワイヤレス電力伝送システム。 - 前記送電側アクティブ電極および前記送電側パッシブ電極は第1平面上に設けられ、
前記受電側アクティブ電極および前記受電側パッシブ電極は、前記第1平面と所定間隔を隔てて対向する第2平面上に設けられ、
前記送電側基準電位電極は、前記第1平面に対し、前記第2平面とは反対側で、平行な第3平面上に設けられ、
前記受電側基準電位電極は、前記第2平面に対し、前記第1平面とは反対側で、平行な第4平面上に設けられている、
請求項1から11の何れか一つに記載のワイヤレス電力伝送システム。 - 前記送電側アクティブ電極および前記受電側アクティブ電極は対向配置され、
前記送電側パッシブ電極および前記受電側パッシブ電極は、前記送電側アクティブ電極および前記受電側アクティブ電極を間に挟んで対向配置され、
前記送電側基準電位電極および前記受電側基準電位電極は、前記送電側アクティブ電極および前記受電側アクティブ電極、並びに、前記送電側パッシブ電極および前記受電側パッシブ電極を間に挟んで対向配置される、
請求項1から11の何れか一つに記載のワイヤレス電力伝送システム。 - 前記送電側基準電位電極は、
前記送電側アクティブ電極および前記送電側パッシブ電極を含む空間の一部または全部を覆う導電性部材であり、
前記受電側基準電位電極は、
前記受電側アクティブ電極および前記受電側パッシブ電極を含む空間の一部または全部を覆う導電性部材であり、
前記送電側基準電位電極および前記受電側基準電位電極は、
それぞれの前記導電性部材の一部が対向し、対向する部分が容量結合する、
請求項1から11の何れか一つに記載のワイヤレス電力伝送システム。 - 前記送電側基準電位電極である導電性部材は前記送電装置の筐体の少なくとも一部である、
請求項17に記載のワイヤレス電力伝送システム。 - 前記受電側基準電位電極である導電性部材は前記受電装置の筐体の少なくとも一部である、
請求項17または18に記載のワイヤレス電力伝送システム。 - 前記送電装置の基準電位は外部アースに接続されている、
請求項1から19の何れか一つに記載のワイヤレス電力伝送システム。 - 前記送電側基準電位電極と前記受電側基準電極とは、直流的に結合されている、請求項1に記載のワイヤレス電力伝送システム。
Priority Applications (4)
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CN201280047874.1A CN103843228B (zh) | 2011-10-12 | 2012-10-10 | 无线电力传输系统 |
GB1405552.9A GB2509030B (en) | 2011-10-12 | 2012-10-10 | Wireless power transmission system |
JP2013538397A JP5454748B2 (ja) | 2011-10-12 | 2012-10-10 | ワイヤレス電力伝送システム |
US14/189,357 US9461507B2 (en) | 2011-10-12 | 2014-02-25 | Wireless power transmission system |
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JP2011-224507 | 2011-10-12 |
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US14/189,357 Continuation US9461507B2 (en) | 2011-10-12 | 2014-02-25 | Wireless power transmission system |
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Also Published As
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CN103843228A (zh) | 2014-06-04 |
GB2509030B (en) | 2016-06-22 |
GB201405552D0 (en) | 2014-05-14 |
CN103843228B (zh) | 2016-07-06 |
US20140175907A1 (en) | 2014-06-26 |
JPWO2013054800A1 (ja) | 2015-03-30 |
JP5454748B2 (ja) | 2014-03-26 |
US9461507B2 (en) | 2016-10-04 |
GB2509030A (en) | 2014-06-18 |
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