JP7187810B2 - Contactless power transmission system, power receiving device and power transmitting device - Google Patents

Contactless power transmission system, power receiving device and power transmitting device Download PDF

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JP7187810B2
JP7187810B2 JP2018077783A JP2018077783A JP7187810B2 JP 7187810 B2 JP7187810 B2 JP 7187810B2 JP 2018077783 A JP2018077783 A JP 2018077783A JP 2018077783 A JP2018077783 A JP 2018077783A JP 7187810 B2 JP7187810 B2 JP 7187810B2
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弘行 宮崎
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Sumida Corp
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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Description

本発明は、非接触電力伝送システム、受電装置及び送電装置に関する。 The present invention relates to a contactless power transmission system, a power receiving device, and a power transmitting device.

電界結合方式の非接触電力伝送システムとしては、特許文献１に記載のものがある。
特許文献１の非接触電力伝送システムは、第１主面に沿って設けられて交流電圧が印加される第１送電電極および第２送電電極を備える送電装置と、第２主面に沿って設けられて第１送電電極および第２送電電極と電界結合される第１受電電極および第２受電電極を備える受電装置とを備えている。第１送電電極および第１受電電極の各々のサイズは第２主面を第１主面に対向させた特定状態において第２主面に直交する方向から眺めて第１受電電極が第１送電電極の外縁内に収まるように調整されている。第１送電電極は切り欠きによって第１方向に並ぶ複数の部分電極に分割され、複数の部分電極の各々は第１方向に直交する第２方向に延びる短冊形状に形成されている。この非接触電力伝送システムは、更に、複数の部分電極のいずれか１つを交流電圧の印加先として選択する選択手段を備えている。第１受電電極の輪郭に割り当てられた２点間の最大距離は上記切り欠きの幅と短冊の幅との和に相当する距離を上回り、上記切り欠きの配置は特定状態において第２受電電極の一部が上記切り欠きと対向するように調整されている。
特許文献１の非接触電力伝送システムによれば、同文献の図７（Ａ）から図９（Ａ）に示すように、送電装置に対して受電装置を高い自由度で配置して、送電装置から受電装置に電力を伝送することができる。 Patent Document 1 discloses an electric field coupling type contactless power transmission system.
The contactless power transmission system of Patent Document 1 includes a power transmission device including a first power transmission electrode and a second power transmission electrode provided along a first main surface and to which an AC voltage is applied, and a power transmission device provided along the second main surface. a power receiving device including a first power receiving electrode and a second power receiving electrode that are coupled to each other by electric field coupling with the first power transmitting electrode and the second power transmitting electrode. The size of each of the first power transmitting electrode and the first power receiving electrode is such that the first power receiving electrode is larger than the first power transmitting electrode when viewed from a direction orthogonal to the second main surface in a specific state in which the second main surface faces the first main surface. adjusted to fit within the outer edge of the The first power transmitting electrode is divided into a plurality of partial electrodes arranged in a first direction by notches, and each of the plurality of partial electrodes is formed in a strip shape extending in a second direction orthogonal to the first direction. This non-contact power transmission system further includes selection means for selecting any one of the plurality of partial electrodes as a destination to which the AC voltage is applied. The maximum distance between two points assigned to the outline of the first power receiving electrode exceeds the distance corresponding to the sum of the width of the cutout and the width of the strip, and the arrangement of the cutouts is such that in a specific state, the second power receiving electrode A part of it is adjusted to face the notch.
According to the contactless power transmission system of Patent Document 1, as shown in FIGS. power can be transmitted from the device to the receiving device.

国際公開第２０１３／１５３８４１号パンフレットInternational Publication No. 2013/153841 pamphlet

しかしながら、特許文献１の非接触電力伝送システムでは、同文献の図７（Ａ）から図９（Ａ）に示すように、第２受電電極（同文献の受電電極Ｅ４）が、互いに逆位相となる第１送電電極（同文献の送電電極Ｅ１）と第２送電電極（同文献の送電電極Ｅ２）との双方と対向するため、電力伝送効率が低下する懸念がある。 However, in the contactless power transmission system of Patent Document 1, as shown in FIGS. Since it faces both the first power transmission electrode (power transmission electrode E1 in the same document) and the second power transmission electrode (power transmission electrode E2 in the same document), there is a concern that the power transmission efficiency may decrease.

本発明は、送電装置に対する受電装置の高い配置の自由度と、送電装置から受電装置への高い電力伝送効率と、を両立させることが可能な構造の非接触電力伝送システム、受電装置及び送電装置を提供するものである。 The present invention provides a contactless power transmission system, a power receiving device, and a power transmitting device having a structure capable of achieving both a high degree of freedom in arranging a power receiving device with respect to a power transmitting device and high power transmission efficiency from the power transmitting device to the power receiving device. It provides

本発明によれば、交流電源と、それぞれ前記交流電源と電気的に接続されているとともに送電面に沿って配置されている複数の送電電極と、を有する送電装置と、
前記送電面に重ねて配置される受電面に沿って配置されていて前記送電電極と電界結合される複数の受電電極を有し、前記送電装置から非接触で電力供給を受ける受電装置と、
を備える非接触電力伝送システムであって、
前記複数の送電電極には、互いに逆位相となる複数の第１送電電極と複数の第２送電電極とが含まれ、
前記受電面が前記送電面に重ねて配置されている状態において、前記送電面と前記受電面との相対的な位置及び相対的な向きにかかわらず、（１）前記複数の受電電極のうち１つ以上の受電電極が前記第１送電電極と重なるとともに他の１つ以上の受電電極が前記第２送電電極と重なり、且つ、（２）前記送電電極と重なるいずれの受電電極も前記第１送電電極又は前記第２送電電極の一方にのみ重なる、という条件を満たし得るように、前記複数の送電電極と前記複数の受電電極とが配置されており、
前記複数の受電電極の各々は円形状に形成されており、
前記複数の送電電極の各々は正方形状に形成されており、
前記複数の受電電極の各々の外径が、前記複数の送電電極の一辺の長さの半分以上であり且つ前記複数の送電電極の一辺の長さよりも小さく、
互いに隣り合う前記受電電極の中心間距離が前記送電電極の対角線の長さよりも大きく、一の前記送電電極に重なり得る前記受電電極の中心が１つ以下である非接触電力伝送システムが提供される。 According to the present invention, a power transmission device comprising: an AC power supply; and a plurality of power transmission electrodes electrically connected to the AC power supply and arranged along a power transmission surface;
a power receiving device that has a plurality of power receiving electrodes that are arranged along a power receiving surface that is arranged to overlap the power transmitting surface and is electrically coupled to the power transmitting electrodes, and receives power from the power transmitting device in a contactless manner;
A contactless power transmission system comprising:
The plurality of power transmission electrodes include a plurality of first power transmission electrodes and a plurality of second power transmission electrodes having phases opposite to each other,
In a state in which the power receiving surface is superimposed on the power transmitting surface, regardless of the relative positions and relative orientations of the power transmitting surface and the power receiving surface, (1) one of the plurality of power receiving electrodes At least one power receiving electrode overlaps the first power transmitting electrode and at least one other power receiving electrode overlaps the second power transmitting electrode; and (2) any power receiving electrode overlapping the power transmitting electrode is the first power transmitting electrode. The plurality of power transmitting electrodes and the plurality of power receiving electrodes are arranged so as to satisfy the condition that they overlap only one of the electrodes or the second power transmitting electrodes,
each of the plurality of power receiving electrodes is formed in a circular shape,
each of the plurality of power transmission electrodes is formed in a square shape,
the outer diameter of each of the plurality of power receiving electrodes is half or more of the length of one side of the plurality of power transmitting electrodes and smaller than the length of one side of the plurality of power transmitting electrodes ;
A contactless power transmission system is provided in which the distance between the centers of the power receiving electrodes adjacent to each other is greater than the length of the diagonal line of the power transmitting electrodes, and the number of centers of the power receiving electrodes that can overlap one of the power transmitting electrodes is one or less. be.

また、本発明によれば、交流電源と、それぞれ前記交流電源と電気的に接続されているとともに送電面に沿って配置されている複数の送電電極と、を有する送電装置と、
前記送電面に重ねて配置される受電面に沿って配置されていて前記送電電極と電界結合される複数の受電電極を有し、前記送電装置から非接触で電力供給を受ける受電装置と、
を備える非接触電力伝送システムであって、
前記複数の送電電極には、互いに逆位相となる第１送電電極と第２送電電極とが含まれ、
前記複数の送電電極は格子状に配置されており、
前記第１送電電極と前記第２送電電極とが交互に配置されており、
前記複数の送電電極のうち隣り合う送電電極間の間隙が、前記受電電極の外径よりも大きく、
前記複数の受電電極は格子状に配置されており、
前記複数の受電電極のうち隣り合う受電電極間の間隙が、前記送電電極の外径よりも小さく、
前記複数の受電電極の各々は円形状に形成されており、
前記複数の送電電極の各々は正方形状に形成されており、
前記複数の受電電極の各々の外径が、前記複数の送電電極の一辺の長さの半分以上であり且つ前記複数の送電電極の一辺の長さよりも小さく、
互いに隣り合う前記受電電極の中心間距離が前記送電電極の対角線の長さよりも大きく、一の前記送電電極に重なり得る前記受電電極の中心が１つ以下である非接触電力伝送システムが提供される。
Further, according to the present invention, a power transmission device including an AC power supply and a plurality of power transmission electrodes electrically connected to the AC power supply and arranged along a power transmission surface,
a power receiving device that has a plurality of power receiving electrodes that are arranged along a power receiving surface that is arranged to overlap the power transmitting surface and is electrically coupled to the power transmitting electrodes, and receives power from the power transmitting device in a contactless manner;
A contactless power transmission system comprising:
The plurality of power transmission electrodes include a first power transmission electrode and a second power transmission electrode having opposite phases to each other,
The plurality of power transmission electrodes are arranged in a lattice,
The first power transmission electrodes and the second power transmission electrodes are alternately arranged,
a gap between adjacent power transmitting electrodes among the plurality of power transmitting electrodes is larger than an outer diameter of the power receiving electrode;
The plurality of power receiving electrodes are arranged in a grid,
a gap between adjacent power receiving electrodes among the plurality of power receiving electrodes is smaller than an outer diameter of the power transmitting electrode;
each of the plurality of power receiving electrodes is formed in a circular shape,
each of the plurality of power transmission electrodes is formed in a square shape,
the outer diameter of each of the plurality of power receiving electrodes is half or more of the length of one side of the plurality of power transmitting electrodes and smaller than the length of one side of the plurality of power transmitting electrodes ;
A contactless power transmission system is provided in which the distance between the centers of the power receiving electrodes adjacent to each other is greater than the length of the diagonal line of the power transmitting electrodes, and the number of centers of the power receiving electrodes that can overlap one of the power transmitting electrodes is one or less. be.

また、本発明によれば、本発明の非接触電力伝送システムにおける送電装置が提供される。 Further, according to the present invention, there is provided a power transmitting device in the contactless power transmission system of the present invention.

また、本発明によれば、本発明の非接触電力伝送システムにおける受電装置が提供される。 Further, according to the present invention, there is provided a power receiving device in the contactless power transmission system of the present invention.

本発明によれば、送電装置に対して受電装置を高い自由度で配置して送電装置から受電装置に電力を伝送することと、送電装置から受電装置への高い電力伝送効率と、を両立させ得ることが可能となる。 According to the present invention, a power receiving device can be arranged with a high degree of freedom with respect to a power transmitting device, and power can be transmitted from the power transmitting device to the power receiving device, while high power transmission efficiency from the power transmitting device to the power receiving device can be achieved at the same time. can be obtained.

図１（ａ）は第１実施形態に係る非接触電力伝送システムの受電装置を示す模式的な斜視図であり、図１（ｂ）は第１実施形態に係る非接触電力伝送システムの送電装置を示す模式的な斜視図である。FIG. 1(a) is a schematic perspective view showing a power receiving device of the contactless power transmission system according to the first embodiment, and FIG. 1(b) is a power transmitting device of the contactless power transmission system according to the first embodiment. It is a schematic perspective view showing the. 第１実施形態に係る非接触電力伝送システムの受電装置における受電電極の平面的な配置を説明するための平面図である。FIG. 2 is a plan view for explaining the planar arrangement of power receiving electrodes in the power receiving device of the contactless power transmission system according to the first embodiment; 第１実施形態に係る非接触電力伝送システムの送電装置における送電電極の平面的な配置を説明するための平面図である。FIG. 4 is a plan view for explaining the planar arrangement of power transmission electrodes in the power transmission device of the contactless power transmission system according to the first embodiment; 第１実施形態に係る非接触電力伝送システムの回路構成を示す図である。1 is a diagram showing a circuit configuration of a contactless power transmission system according to a first embodiment; FIG. 第１実施形態に係る非接触電力伝送システムの送電装置に対する受電装置の配置の一例を示す模式的な平面図である。FIG. 2 is a schematic plan view showing an example of arrangement of power receiving devices with respect to the power transmitting device of the contactless power transmission system according to the first embodiment; 第１実施形態に係る非接触電力伝送システムの送電装置に対する受電装置の配置の他の一例を示す模式的な平面図である。4 is a schematic plan view showing another example of arrangement of power receiving devices with respect to the power transmitting device of the contactless power transmission system according to the first embodiment; FIG. 第１実施形態に係る非接触電力伝送システムの送電装置に対する受電装置の配置の更に他の一例を示す模式的な平面図である。FIG. 7 is a schematic plan view showing still another example of the arrangement of the power receiving device with respect to the power transmitting device of the contactless power transmission system according to the first embodiment; 第１実施形態に係る非接触電力伝送システムの送電装置に対する受電装置の配置の更に他の一例を示す模式的な平面図である。FIG. 7 is a schematic plan view showing still another example of the arrangement of the power receiving device with respect to the power transmitting device of the contactless power transmission system according to the first embodiment; 第２実施形態に係る非接触電力伝送システムの受電装置における受電電極の平面的な配置を説明するための平面図である。FIG. 10 is a plan view for explaining the planar arrangement of power receiving electrodes in the power receiving device of the contactless power transmission system according to the second embodiment; 第２実施形態に係る非接触電力伝送システムの送電装置に対する受電装置の配置の一例を示す模式的な平面図である。FIG. 10 is a schematic plan view showing an example of the arrangement of power receiving devices with respect to the power transmitting device of the contactless power transmission system according to the second embodiment;

以下、本発明の実施形態について、図面を用いて説明する。なお、すべての図面において、同様の構成要素には同一の符号を付し、適宜に説明を省略する。 BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, in all the drawings, the same reference numerals are given to the same constituent elements, and the description thereof will be omitted as appropriate.

〔第１実施形態〕
先ず、図１から図８を用いて第１実施形態を説明する。
本実施形態に係る非接触電力伝送システム１００は、交流電源３１（図４）と、それぞれ交流電源３１と電気的に接続されているとともに送電面Ａ２（図１（ｂ））に沿って配置されている複数の送電電極（第１送電電極２１、第２送電電極２２）とを有する送電装置２０と、送電面Ａ２に重ねて配置される受電面Ａ１（図１（ａ））に沿って配置されていて送電電極と電界結合される複数の受電電極１１を有し送電装置２０から非接触で電力供給を受ける受電装置１０と、を備える非接触電力伝送システム１００である。
複数の送電電極には、互いに逆位相となる複数の第１送電電極２１と複数の第２送電電極２２とが含まれている。
受電面Ａ１が送電面Ａ２に重ねて配置されている状態において、送電面Ａ２と受電面Ａ１との相対的な位置及び相対的な向きにかかわらず、（１）複数の受電電極１１のうち１つ以上の受電電極１１が第１送電電極２１と重なるとともに他の１つ以上の受電電極１１が第２送電電極２２と重なり、且つ、（２）送電電極と重なるいずれの受電電極１１も第１送電電極２１又は第２送電電極２２の一方にのみ重なる、という条件を満たし得るように、複数の送電電極と複数の受電電極１１とが配置されている。 [First embodiment]
First, a first embodiment will be described with reference to FIGS. 1 to 8. FIG.
The contactless power transmission system 100 according to the present embodiment is electrically connected to an AC power supply 31 (FIG. 4) and arranged along a power transmission plane A2 (FIG. 1B). A power transmission device 20 having a plurality of power transmission electrodes (a first power transmission electrode 21 and a second power transmission electrode 22) arranged along a power receiving surface A1 (FIG. 1(a)) arranged to overlap the power transmission surface A2. a power receiving device 10 having a plurality of power receiving electrodes 11 electrically coupled to the power transmitting electrodes and receiving power from the power transmitting device 20 in a contactless manner.
The plurality of power transmission electrodes includes a plurality of first power transmission electrodes 21 and a plurality of second power transmission electrodes 22 that are in opposite phases to each other.
In a state in which the power receiving surface A1 is superimposed on the power transmitting surface A2, regardless of the relative positions and orientations of the power transmitting surface A2 and the power receiving surface A1, (1) one of the plurality of power receiving electrodes 11 At least one power receiving electrode 11 overlaps with the first power transmitting electrode 21, and at least one other power receiving electrode 11 overlaps with the second power transmitting electrode 22, and (2) any power receiving electrode 11 overlapping with the power transmitting electrode A plurality of power transmission electrodes and a plurality of power reception electrodes 11 are arranged so as to satisfy the condition that they overlap only one of the power transmission electrodes 21 and the second power transmission electrodes 22 .

ここで、図１（ａ）及び図２に二点鎖線で示される包絡線Ｅ１は、受電装置１０が有する複数の受電電極１１の配置領域を最短距離で包絡する包絡線である。受電面Ａ１は、この包絡線Ｅ１に囲まれた内側領域である。
図１（ｂ）及び図５に二点鎖線で示される包絡線Ｅ２は、送電装置２０が有する複数の送電電極の配置領域を最短距離で包絡する包絡線である。送電面Ａ２は、この包絡線Ｅ２に囲まれた内側領域である。
本発明において、「受電面Ａ１が送電面Ａ２に重ねて配置されている状態」とは、受電面Ａ１の少なくとも一部分と送電面Ａ２の少なくとも一部分とが重なっている（対向している）状態を意味する。この状態において、送電面Ａ２と受電面Ａ１との相対的な位置及び相対的な向きにかかわらず、上記（１）及び（２）の条件を満たし得るように、複数の送電電極と複数の受電電極１１とが配置されている。 Here, an envelope E1 indicated by a two-dot chain line in FIGS. 1A and 2 is an envelope that envelops the arrangement area of the plurality of power receiving electrodes 11 of the power receiving device 10 at the shortest distance. The power receiving surface A1 is an inner area surrounded by the envelope E1.
An envelope E2 indicated by a two-dot chain line in FIGS. 1B and 5 is an envelope that envelops the arrangement area of the plurality of power transmission electrodes of the power transmission device 20 at the shortest distance. A power transmission surface A2 is an inner area surrounded by the envelope E2.
In the present invention, “a state in which the power receiving surface A1 is arranged to overlap the power transmitting surface A2” refers to a state in which at least a portion of the power receiving surface A1 and at least a portion of the power transmitting surface A2 overlap (face each other). means. In this state, regardless of the relative positions and orientations of the power transmission surface A2 and the power reception surface A1, the plurality of power transmission electrodes and the plurality of power reception electrodes are arranged so as to satisfy the conditions (1) and (2) above. An electrode 11 is arranged.

本実施形態によれば、受電面Ａ１が送電面Ａ２に重ねて配置されている状態において、送電面Ａ２と受電面Ａ１との相対的な位置及び相対的な向きにかかわらず、送電装置２０から受電装置１０へ良好な伝送効率で電力を伝送し得るようにできる。
つまり、送電装置２０に対する受電装置１０の高い配置の自由度と、送電装置２０から受電装置１０への高い電力伝送効率と、を両立させ得ることができる。 According to the present embodiment, in a state where the power receiving surface A1 is superimposed on the power transmitting surface A2, regardless of the relative positions and orientations of the power transmitting surface A2 and the power receiving surface A1, Power can be transmitted to the power receiving device 10 with good transmission efficiency.
In other words, it is possible to achieve both a high degree of freedom in arranging the power receiving device 10 with respect to the power transmitting device 20 and high power transmission efficiency from the power transmitting device 20 to the power receiving device 10 .

図１（ａ）に示すように、受電装置１０は、例えば、筐体１３を有し、この筐体１３が有する１つの平坦な外面が受電側対向面１５となっている。複数の受電電極１１は、受電側対向面１５に沿って配置されている。したがって、受電面Ａ１は、受電側対向面１５に沿って配置されている。複数の受電電極１１は、例えば、筐体１３内に配置されている。筐体１３の形状は特に限定されないが、本実施形態の場合、筐体１３は扁平な直方体形状となっており、平面視矩形状に形成されている。 As shown in FIG. 1A , the power receiving device 10 has, for example, a housing 13 , and one flat outer surface of the housing 13 serves as a power receiving side facing surface 15 . The plurality of power receiving electrodes 11 are arranged along the power receiving side facing surface 15 . Therefore, the power receiving surface A1 is arranged along the power receiving side facing surface 15 . The plurality of power receiving electrodes 11 are arranged inside the housing 13, for example. Although the shape of the housing 13 is not particularly limited, in the case of the present embodiment, the housing 13 has a flat rectangular parallelepiped shape, and is formed in a rectangular shape in plan view.

図１（ｂ）に示すように、送電装置２０は、例えば、筐体２３を有し、この筐体２３が有する１つの平坦な外面が送電側対向面２５となっている。複数の送電電極は、送電側対向面２５に沿って配置されている。したがって、送電面Ａ２は、送電側対向面２５に沿って配置されている。複数の送電電極は、例えば、筐体２３内に配置されている。筐体２３の形状は特に限定されないが、本実施形態の場合、筐体２３は扁平な直方体形状となっており、平面視矩形状に形成されている。 As shown in FIG. 1B , the power transmission device 20 has, for example, a housing 23 , and one flat outer surface of the housing 23 serves as a power transmission side facing surface 25 . A plurality of power transmission electrodes are arranged along the power transmission side facing surface 25 . Therefore, the power transmission surface A2 is arranged along the power transmission side facing surface 25 . The plurality of power transmission electrodes are arranged inside the housing 23, for example. Although the shape of the housing 23 is not particularly limited, in the case of the present embodiment, the housing 23 has a flat rectangular parallelepiped shape and is formed in a rectangular shape in plan view.

本発明において、受電面Ａ１と送電面Ａ２とは、どちらの面積が広くてもよいし、受電面Ａ１と送電面Ａ２とは面積が互いに等しくてもよい。
送電面Ａ２の面積が受電面Ａ１の面積よりも広い場合、受電面Ａ１の全面が送電面Ａ２と重ねて配置されている状態において、送電面Ａ２と受電面Ａ１との相対的な位置及び相対的な向きにかかわらず、上記（１）及び（２）の条件を満たすように、複数の送電電極と複数の受電電極１１とが配置されていることが好ましい。
また、送電面Ａ２の面積が受電面Ａ１の面積よりも狭い場合、送電面Ａ２の全面が受電面Ａ１と重ねて配置されている状態において、送電面Ａ２と受電面Ａ１との相対的な位置及び相対的な向きにかかわらず、上記（１）及び（２）の条件を満たすように、複数の送電電極と複数の受電電極１１とが配置されていることが好ましい。 In the present invention, either the power receiving surface A1 or the power transmitting surface A2 may have a larger area, or the power receiving surface A1 and the power transmitting surface A2 may have the same area.
When the area of the power transmission surface A2 is larger than the area of the power reception surface A1, the relative position and relationship between the power transmission surface A2 and the power reception surface A1 in a state where the entire power reception surface A1 is overlapped with the power transmission surface A2. It is preferable that the plurality of power transmission electrodes and the plurality of power reception electrodes 11 are arranged so as to satisfy the above conditions (1) and (2) regardless of the physical orientation.
Further, when the area of the power transmission surface A2 is smaller than the area of the power reception surface A1, the relative positions of the power transmission surface A2 and the power reception surface A1 in a state where the entire power transmission surface A2 is overlapped with the power reception surface A1. And regardless of the relative orientation, it is preferable that the plurality of power transmitting electrodes and the plurality of power receiving electrodes 11 are arranged so as to satisfy the conditions (1) and (2) above.

本発明において、受電側対向面１５と送電側対向面２５とは、どちらの面積が広くてもよいし、受電側対向面１５と送電側対向面２５とは面積が互いに等しくてもよい。
送電側対向面２５の面積が受電側対向面１５の面積よりも広い場合、受電側対向面１５の全面が送電側対向面２５と重ねて配置されている状態において、送電面Ａ２と受電面Ａ１との相対的な位置及び相対的な向きにかかわらず、上記（１）及び（２）の条件を満たすように、複数の送電電極と複数の受電電極１１とが配置されていることが好ましい。
また、送電側対向面２５の面積が受電側対向面１５の面積よりも狭い場合、送電側対向面２５の全面が受電側対向面１５と重ねて配置されている状態において、送電面Ａ２と受電面Ａ１との相対的な位置及び相対的な向きにかかわらず、上記（１）及び（２）の条件を満たすように、複数の送電電極と複数の受電電極１１とが配置されていることが好ましい。 In the present invention, either the power receiving side facing surface 15 or the power transmitting side facing surface 25 may have a larger area, or the power receiving side facing surface 15 and the power transmitting side facing surface 25 may have the same area.
When the area of the power transmission side facing surface 25 is larger than the area of the power receiving side facing surface 15, the power transmission side A2 and the power receiving side A1 are arranged in a state where the entire power receiving side facing surface 15 is overlapped with the power transmission side facing surface 25. It is preferable that the plurality of power transmitting electrodes and the plurality of power receiving electrodes 11 are arranged so as to satisfy the above conditions (1) and (2) regardless of the relative positions and relative orientations with the .
Further, when the area of the power transmission side facing surface 25 is smaller than the area of the power receiving side facing surface 15, in a state where the entire power transmission side facing surface 25 is arranged to overlap the power receiving side facing surface 15, the power transmission surface A2 and the power receiving side facing surface 25 A plurality of power transmitting electrodes and a plurality of power receiving electrodes 11 are arranged so as to satisfy the above conditions (1) and (2) regardless of the relative position and relative orientation with respect to the surface A1. preferable.

本発明において、受電面Ａ１と送電側対向面２５とは、どちらの面積が広くてもよいし、受電面Ａ１と送電側対向面２５とは面積が互いに等しくてもよい。
送電側対向面２５の面積が受電面Ａ１の面積よりも広い場合、受電面Ａ１の全面が送電側対向面２５と重ねて配置されている状態において、送電面Ａ２と受電面Ａ１との相対的な位置及び相対的な向きにかかわらず、上記（１）及び（２）の条件を満たすように、複数の送電電極と複数の受電電極１１とが配置されていることが好ましい。
また、送電側対向面２５の面積が受電面Ａ１の面積よりも狭い場合、送電側対向面２５の全面が受電面Ａ１と重ねて配置されている状態において、送電面Ａ２と受電面Ａ１との相対的な位置及び相対的な向きにかかわらず、上記（１）及び（２）の条件を満たすように、複数の送電電極と複数の受電電極１１とが配置されていることが好ましい。 In the present invention, either the power receiving surface A1 or the power transmission side facing surface 25 may have a larger area, or the power receiving surface A1 and the power transmission side facing surface 25 may have the same area.
When the area of the power transmission side facing surface 25 is larger than the area of the power receiving surface A1, the power transmission side A2 and the power receiving surface A1 are relatively It is preferable that the plurality of power transmitting electrodes and the plurality of power receiving electrodes 11 are arranged so as to satisfy the above conditions (1) and (2) regardless of their positions and relative orientations.
Further, when the area of the power transmission side facing surface 25 is smaller than the area of the power receiving surface A1, in a state where the entire power transmission side facing surface 25 is overlapped with the power receiving surface A1, the power transmission surface A2 and the power receiving surface A1 It is preferable that the plurality of power transmitting electrodes and the plurality of power receiving electrodes 11 are arranged so as to satisfy the above conditions (1) and (2) regardless of their relative positions and relative orientations.

本発明において、受電側対向面１５と送電面Ａ２とは、どちらの面積が広くてもよいし、受電側対向面１５と送電面Ａ２とは面積が互いに等しくてもよい。
送電面Ａ２の面積が受電側対向面１５の面積よりも広い場合、受電側対向面１５の全面が送電面Ａ２と重ねて配置されている状態において、送電面Ａ２と受電面Ａ１との相対的な位置及び相対的な向きにかかわらず、上記（１）及び（２）の条件を満たすように、複数の送電電極と複数の受電電極１１とが配置されていることが好ましい。
また、送電面Ａ２の面積が受電側対向面１５の面積よりも狭い場合、送電面Ａ２の全面が受電側対向面１５と重ねて配置されている状態において、送電面Ａ２と受電面Ａ１との相対的な位置及び相対的な向きにかかわらず、上記（１）及び（２）の条件を満たすように、複数の送電電極と複数の受電電極１１とが配置されていることが好ましい。 In the present invention, either the power receiving side facing surface 15 or the power transmitting surface A2 may have a larger area, or the power receiving side facing surface 15 and the power transmitting surface A2 may have the same area.
When the area of the power transmission surface A2 is larger than the area of the power receiving side facing surface 15, in a state where the entire power receiving side facing surface 15 is overlapped with the power transmission surface A2, there is a relative difference between the power transmission surface A2 and the power receiving surface A1. It is preferable that the plurality of power transmitting electrodes and the plurality of power receiving electrodes 11 are arranged so as to satisfy the above conditions (1) and (2) regardless of their positions and relative orientations.
Further, when the area of the power transmission surface A2 is smaller than the area of the power receiving side facing surface 15, in a state where the entire power transmission surface A2 is overlapped with the power receiving side facing surface 15, the power transmission surface A2 and the power receiving surface A1 It is preferable that the plurality of power transmitting electrodes and the plurality of power receiving electrodes 11 are arranged so as to satisfy the above conditions (1) and (2) regardless of their relative positions and relative orientations.

これらの条件を満たすような構成を実現するため、受電装置１０における受電電極１１の数、送電装置２０における送電電極の数、受電側対向面１５の面積、及び、送電側対向面２５の面積を、それぞれ設定することができる。 In order to realize a configuration that satisfies these conditions, the number of power receiving electrodes 11 in the power receiving device 10, the number of power transmitting electrodes in the power transmitting device 20, the area of the power receiving side facing surface 15, and the area of the power transmitting side facing surface 25 are set to , can be set respectively.

本実施形態の場合、送電面Ａ２の面積が受電面Ａ１の面積よりも広く、少なくとも、受電面Ａ１の全面が送電面Ａ２と重ねて配置されている状態では、送電面Ａ２と受電面Ａ１との相対的な位置及び相対的な向きにかかわらず、上記（１）及び（２）の条件を満たすように、複数の送電電極と複数の受電電極１１とが配置されている。更に、受電面Ａ１の一部分が送電面Ａ２からはみ出ていても、上記（１）及び（２）の条件を満たすような配置（送電面Ａ２と受電面Ａ１との相対的な位置及び相対的な向き）も存在する。 In the case of the present embodiment, the area of the power transmission surface A2 is larger than the area of the power reception surface A1, and at least in a state where the entire power reception surface A1 is overlapped with the power transmission surface A2, the power transmission surface A2 and the power reception surface A1 A plurality of power transmitting electrodes and a plurality of power receiving electrodes 11 are arranged so as to satisfy the above conditions (1) and (2) regardless of the relative positions and relative orientations of the electrodes. Furthermore, even if part of the power receiving surface A1 protrudes from the power transmitting surface A2, an arrangement that satisfies the above conditions (1) and (2) (relative positions and relative positions between the power transmitting surface A2 and the power receiving surface A1) can be used. orientation) also exists.

本実施形態の場合、送電側対向面２５の面積が受電側対向面１５の面積よりも広く、少なくとも、受電側対向面１５の全面が送電側対向面２５と重ねて配置されている状態では、送電面Ａ２と受電面Ａ１との相対的な位置及び相対的な向きにかかわらず、上記（１）及び（２）の条件を満たすように、複数の送電電極と複数の受電電極１１とが配置されている。更に、受電側対向面１５の一部分が送電側対向面２５からはみ出ていても、上記（１）及び（２）の条件を満たすような配置（送電面Ａ２と受電面Ａ１との相対的な位置及び相対的な向き）も存在する。 In the case of the present embodiment, when the area of the power transmission side facing surface 25 is larger than the area of the power receiving side facing surface 15 and at least the entire surface of the power receiving side facing surface 15 is overlapped with the power transmission side facing surface 25, A plurality of power transmitting electrodes and a plurality of power receiving electrodes 11 are arranged so as to satisfy the above conditions (1) and (2) regardless of the relative positions and orientations of the power transmitting surface A2 and the power receiving surface A1. It is Furthermore, even if a part of the power receiving side facing surface 15 protrudes from the power transmitting side facing surface 25, an arrangement that satisfies the above conditions (1) and (2) (relative positions between the power transmitting surface A2 and the power receiving surface A1) and relative orientations).

本実施形態の場合、送電側対向面２５の面積が受電面Ａ１の面積よりも広く、少なくとも、受電面Ａ１の全面が送電側対向面２５と重ねて配置されている状態では、送電面Ａ２と受電面Ａ１との相対的な位置及び相対的な向きにかかわらず、上記（１）及び（２）の条件を満たすように、複数の送電電極と複数の受電電極１１とが配置されている。更に、受電面Ａ１の一部分が送電側対向面２５からはみ出ていても、上記（１）及び（２）の条件を満たすような配置（送電面Ａ２と受電面Ａ１との相対的な位置及び相対的な向き）も存在する。 In the case of the present embodiment, the area of the power transmission side facing surface 25 is larger than the area of the power receiving surface A1, and at least in a state where the entire power receiving surface A1 is overlapped with the power transmission side facing surface 25, the power transmission surface A2 A plurality of power transmitting electrodes and a plurality of power receiving electrodes 11 are arranged so as to satisfy the above conditions (1) and (2) regardless of their relative positions and relative orientations with respect to the power receiving surface A1. Furthermore, even if part of the power receiving surface A1 protrudes from the power transmission side facing surface 25, the arrangement (relative position and relative position between the power transmission surface A2 and the power receiving surface A1) that satisfies the above conditions (1) and (2) orientation) also exist.

本実施形態の場合、送電面Ａ２の面積が受電側対向面１５の面積よりも広く、少なくとも、受電側対向面１５の全面が送電面Ａ２と重ねて配置されている状態では、送電面Ａ２と受電面Ａ１との相対的な位置及び相対的な向きにかかわらず、上記（１）及び（２）の条件を満たすように、複数の送電電極と複数の受電電極１１とが配置されている。更に、受電側対向面１５の一部分が送電面Ａ２からはみ出ていても、上記（１）及び（２）の条件を満たすような配置（送電面Ａ２と受電面Ａ１との相対的な位置及び相対的な向き）も存在する。 In the case of the present embodiment, the area of the power transmission surface A2 is larger than the area of the power receiving side facing surface 15, and at least in a state where the entire power receiving side facing surface 15 is overlapped with the power transmission surface A2, A plurality of power transmitting electrodes and a plurality of power receiving electrodes 11 are arranged so as to satisfy the above conditions (1) and (2) regardless of their relative positions and relative orientations with respect to the power receiving surface A1. Furthermore, even if a part of the power receiving side facing surface 15 protrudes from the power transmission surface A2, an arrangement that satisfies the above conditions (1) and (2) (relative position and relative position between the power transmission surface A2 and the power reception surface A1) orientation) also exist.

本実施形態の場合、図５等に示すように、受電側対向面１５と送電側対向面２５とを対向させて（受電側対向面１５と送電側対向面２５とを互いに突き合わせて）送電装置２０に受電装置１０を重ねたときに、平面視において筐体１３の外形線が筐体２３の外形線の内側に収まるように、筐体１３及び筐体２３の寸法及び形状が設定されている。 In the case of the present embodiment, as shown in FIG. 5 and the like, the power transmission device is arranged such that the power receiving side facing surface 15 and the power transmitting side facing surface 25 face each other (the power receiving side facing surface 15 and the power transmitting side facing surface 25 face each other). The dimensions and shapes of the housing 13 and the housing 23 are set so that the outline of the housing 13 fits inside the outline of the housing 23 in plan view when the power receiving device 10 is placed on the power receiving device 20 . .

受電装置１０において、複数の受電電極１１は、互いに同一平面上に配置されていることが好ましい。受電面Ａ１は、受電側対向面１５に対して平行に配置されていることが好ましい。
送電装置２０において、複数の送電電極は、互いに同一平面上に配置されていることが好ましい。送電面Ａ２は、送電側対向面２５に対して平行に配置されていることが好ましい。 In the power receiving device 10, the plurality of power receiving electrodes 11 are preferably arranged on the same plane. The power receiving surface A1 is preferably arranged parallel to the power receiving side facing surface 15 .
In the power transmission device 20, the plurality of power transmission electrodes are preferably arranged on the same plane. The power transmission surface A2 is preferably arranged parallel to the power transmission side facing surface 25 .

本実施形態の場合、図２に示すように、複数の受電電極１１は、格子状に配置されている。より詳細には、複数の受電電極１１は、例えば、正方格子状に配置されている。
受電装置１０が有する受電電極１１の数は特に限定されないが、本実施形態の場合、受電装置１０は、例えば、２行４列の合計８つの受電電極１１を有する。
これら受電電極１１に、便宜的に、図２に示すように、Ｃ１、Ｃ２、Ｃ３、Ｃ４、Ｃ５、Ｃ６、Ｃ７、Ｃ８の呼称をそれぞれ与える。
本実施形態の場合、複数の受電電極１１の各々は、円形状に形成されている。
また、各受電電極１１の寸法は、互いに等しい。 In the case of this embodiment, as shown in FIG. 2, the plurality of power receiving electrodes 11 are arranged in a grid pattern. More specifically, the plurality of power receiving electrodes 11 are arranged in, for example, a square lattice.
Although the number of power receiving electrodes 11 included in the power receiving device 10 is not particularly limited, in the case of the present embodiment, the power receiving device 10 has, for example, a total of eight power receiving electrodes 11 arranged in two rows and four columns.
For convenience, these power receiving electrodes 11 are given designations C1, C2, C3, C4, C5, C6, C7, and C8, respectively, as shown in FIG.
In the case of this embodiment, each of the plurality of power receiving electrodes 11 is formed in a circular shape.
Moreover, the dimensions of each power receiving electrode 11 are equal to each other.

本実施形態の場合、第１送電電極２１と第２送電電極２２とが交互に配置されている。ここで、第１送電電極２１と第２送電電極２２とが交互に配置されているとは、第１送電電極２１と第２送電電極２２とが第１方向（例えば図３における左右方向）において周期的に繰り返し配置されているとともに、第１方向に対して直交する第２方向（例えば図３における上下方向）においても周期的に繰り返し配置されていることを意味する。
本実施形態の場合、図３及び図５に示すように、上記第１方向において隣り合う送電電極が互いに異なる位相になり、且つ、上記第２方向において隣り合う送電電極が互いに異なる位相になるように、複数の送電電極が配置されている。
ただし、本発明において、第１送電電極２１と第２送電電極２２とが交互に配置されているとは、必ずしも、隣り合う送電電極が互いに異なる位相になることに限定されず、図５等に示される個々の送電電極（第１送電電極２１や第２送電電極２２）が同位相の複数の電極に細分化されているような構成であってもよい。 In the case of this embodiment, the first power transmission electrodes 21 and the second power transmission electrodes 22 are alternately arranged. Here, the fact that the first power transmission electrodes 21 and the second power transmission electrodes 22 are alternately arranged means that the first power transmission electrodes 21 and the second power transmission electrodes 22 are arranged in the first direction (for example, the horizontal direction in FIG. 3). It means that they are cyclically and repeatedly arranged, and that they are also cyclically and repeatedly arranged in a second direction perpendicular to the first direction (for example, the vertical direction in FIG. 3).
In the case of the present embodiment, as shown in FIGS. 3 and 5, the phases of power transmission electrodes adjacent to each other in the first direction are different from each other, and the phases of power transmission electrodes adjacent to each other in the second direction are different from each other. , a plurality of power transmission electrodes are arranged.
However, in the present invention, the fact that the first power transmission electrodes 21 and the second power transmission electrodes 22 are alternately arranged does not necessarily mean that the adjacent power transmission electrodes are in phases different from each other. The individual power transmission electrodes (the first power transmission electrode 21 and the second power transmission electrode 22) shown may be subdivided into a plurality of electrodes of the same phase.

より詳細には、複数の送電電極は格子状に配置されている。より詳細には、複数の受電電極１１は、例えば、正方格子状に配置されている。
複数の送電電極の各々は、正方形状に形成されている。より詳細には、複数の送電電極の各々は角丸の正方形状に形成されている。また、各送電電極は、互いに同じ向きに配置されている。すなわち、各送電電極の対応する辺どうしが互いに平行に配置されている。
また、各送電電極の寸法は、互いに等しい。
なお、図３、図５から図８においては、便宜的に、各第１送電電極２１の電位がＬｏｗ、各第２送電電極２２の電位がＨｉｇｈとなった状態を示しているものとし、各第１送電電極２１にはＬの文字を付しており、各第２送電電極２２にはＨの文字を付している。 More specifically, the power transmission electrodes are arranged in a grid. More specifically, the plurality of power receiving electrodes 11 are arranged in, for example, a square lattice.
Each of the plurality of power transmission electrodes is formed in a square shape. More specifically, each of the plurality of power transmission electrodes is formed in a square shape with rounded corners. Moreover, each power transmission electrode is arrange|positioned mutually in the same direction. That is, the corresponding sides of each power transmission electrode are arranged parallel to each other.
Also, the dimensions of each power transmitting electrode are equal to each other.
3 and 5 to 8 , for the sake of convenience, it is assumed that the potential of each first power transmission electrode 21 is Low and the potential of each second power transmission electrode 22 is High. The first power transmission electrode 21 is labeled with the letter L, and each second power transmission electrode 22 is labeled with the letter H.

ここで、複数の送電電極のうち隣り合う送電電極間の間隙Ｄ２（図３）が、受電電極１１の外径Ｒ１（図２）よりも大きい。ここで、本発明において、受電電極１１の形状は円形に限らない。ここでいう受電電極１１の外径Ｒ１は、一の受電電極１１の中心を通り当該受電電極１１の外周上の２点を繋ぐ線分の長さ（差し渡しの長さ）のうち最大のもの（最大外径）である。
また、複数の受電電極１１のうち隣り合う受電電極１１間の間隙Ｄ１（図２）が、送電電極の外径Ｒ２（図３）よりも小さい。ここでいう送電電極の外径Ｒ２は、一の送電電極の中心を通り当該送電電極の外周上の２点を繋ぐ線分の長さ（差し渡しの長さ）のうち最小のもの（最小外径）である。なお、送電電極の最大外径Ｒ３、すなわち一の送電電極の中心を通り当該送電電極の外周上の２点を繋ぐ線分の長さのうち最大のものは、隣り合う受電電極１１間の間隙Ｄ１よりも大きい。 Here, the gap D2 ( FIG. 3 ) between adjacent power transmitting electrodes among the plurality of power transmitting electrodes is larger than the outer diameter R1 ( FIG. 2 ) of the power receiving electrode 11 . Here, in the present invention, the shape of the power receiving electrode 11 is not limited to circular. The outer diameter R1 of the power-receiving electrode 11 referred to here is the maximum length (length across) of the line segment passing through the center of one power-receiving electrode 11 and connecting two points on the outer periphery of the power-receiving electrode 11 ( maximum outer diameter).
Further, the gap D1 (FIG. 2) between adjacent power receiving electrodes 11 among the plurality of power receiving electrodes 11 is smaller than the outer diameter R2 (FIG. 3) of the power transmitting electrodes. The outer diameter R2 of the power transmission electrode referred to here is the smallest (minimum outer diameter ). Note that the maximum outer diameter R3 of the power transmitting electrode, that is, the maximum length of the line segment passing through the center of one power transmitting electrode and connecting two points on the outer periphery of the power transmitting electrode is the gap between the adjacent power receiving electrodes 11. Greater than D1.

本実施形態に係る非接触電力伝送システム１００は、以下のように定義することもできる。
すなわち、本実施形態に係る非接触電力伝送システム１００は、交流電源３１と、それぞれ交流電源３１と電気的に接続されているとともに送電面Ａ２に沿って配置されている複数の送電電極とを有する送電装置２０と、送電面Ａ２に重ねて配置される受電面Ａ１に沿って配置されていて送電電極と電界結合される複数の受電電極１１を有し送電装置２０から非接触で電力供給を受ける受電装置１０と、を備える非接触電力伝送システム１００であって、複数の送電電極には、互いに逆位相となる第１送電電極２１と第２送電電極２２とが含まれ、複数の送電電極は格子状に配置されており、第１送電電極２１と第２送電電極２２とが交互に配置されており、複数の送電電極のうち隣り合う送電電極間の間隙Ｄ２（図３）が受電電極１１の外径Ｒ１（図２）よりも大きく、複数の受電電極１１は格子状に配置されており、複数の受電電極１１のうち隣り合う受電電極１１間の間隙Ｄ１（図２）が、送電電極の外径Ｒ２（図３）よりも小さい。 The contactless power transmission system 100 according to this embodiment can also be defined as follows.
That is, the contactless power transmission system 100 according to the present embodiment has an AC power supply 31 and a plurality of power transmission electrodes electrically connected to the AC power supply 31 and arranged along the power transmission plane A2. It has a power transmitting device 20 and a plurality of power receiving electrodes 11 arranged along a power receiving surface A1 overlapping the power transmitting surface A2 and electrically coupled to the power transmitting electrodes, and receives power from the power transmitting device 20 in a contactless manner. A contactless power transmission system 100 comprising a power receiving device 10, wherein the plurality of power transmission electrodes include a first power transmission electrode 21 and a second power transmission electrode 22 having opposite phases to each other, and the plurality of power transmission electrodes are First power transmission electrodes 21 and second power transmission electrodes 22 are arranged in a grid pattern, and a gap D2 ( FIG. The plurality of power receiving electrodes 11 are arranged in a grid pattern, and a gap D1 ( FIG. 2 ) between adjacent power receiving electrodes 11 among the plurality of power receiving electrodes 11 is larger than the outer diameter R1 (FIG. 2) of the power transmitting electrode. is smaller than the outer diameter R2 (FIG. 3) of the

受電電極１１及び送電電極の寸法及び配置の具体的な一例としては、例えば、受電電極１１の外径Ｒ１を９ｍｍとし、隣り合う受電電極１１間の間隙Ｄ１を６ｍｍとし、送電電極の外径Ｒ２を１０ｍｍとし、隣り合う送電電極間の間隙Ｄ２を１０ｍｍとすることが挙げられる。
このため、本実施形態の場合、複数の受電電極１１の各々の外径Ｒ１が、複数の送電電極の外径Ｒ２よりも小さい。そして、複数の受電電極１１の各々の外径Ｒ１が、複数の送電電極の外径Ｒ２の半分以上である。 As a specific example of the dimensions and arrangement of the power receiving electrode 11 and the power transmitting electrode, for example, the outer diameter R1 of the power receiving electrode 11 is set to 9 mm, the gap D1 between adjacent power receiving electrodes 11 is set to 6 mm, and the outer diameter R2 of the power transmitting electrode is set. is 10 mm, and the gap D2 between adjacent power transmission electrodes is 10 mm.
Therefore, in the case of the present embodiment, the outer diameter R1 of each of the power receiving electrodes 11 is smaller than the outer diameter R2 of the power transmitting electrodes. The outer diameter R1 of each of the plurality of power receiving electrodes 11 is at least half the outer diameter R2 of the plurality of power transmitting electrodes.

図４に示すように、交流電源３１は、互いに逆位相となる第１交流出力端子３２と第２交流出力端子３３とを有する。交流電源３１は、単相でも三相でもよい。
第１送電電極２１の各々は、個別の第１共振コイル３４を介して、第１交流出力端子３２と電気的に接続されている。すなわち、送電装置２０は、第１送電電極２１の各々と対応する第１共振コイル３４を備えており、各第１共振コイル３４の一端は第１交流出力端子３２に対して電気的に接続されており、各第１共振コイル３４の他端は対応する第１送電電極２１に対して電気的に接続されている。
同様に、第２送電電極２２の各々は、個別の第２共振コイル３５を介して、第２交流出力端子３３と電気的に接続されている。すなわち、送電装置２０は、第２送電電極２２の各々と対応する第２共振コイル３５を備えており、各第２共振コイル３５の一端は第２交流出力端子３３に対して電気的に接続されており、各第２共振コイル３５の他端は対応する第２送電電極２２に対して電気的に接続されている。
このため、各第１送電電極２１は常に互いに同位相となり、各第２送電電極２２は常に互いに同位相となり、第１送電電極２１と第２送電電極２２とは常に互いに逆位相になる。
ここで、第１送電電極２１と、当該第１送電電極２１と対応する第１共振コイル３４とにより、第１ＬＣ共振要素が構成されている。第１ＬＣ共振要素は、当該第１ＬＣ共振要素に含まれる第１送電電極２１と受電電極１１とが重なったときに、ＬＣ共振回路の一部分を構成する。
同様に、第２送電電極２２と、当該第２送電電極２２と対応する第２共振コイル３５とにより、第２ＬＣ共振要素が構成されている。第２ＬＣ共振要素は、当該第２ＬＣ共振要素に含まれる第２送電電極２２と受電電極１１とが重なったときに、ＬＣ共振回路の一部分を構成する。 As shown in FIG. 4, the AC power supply 31 has a first AC output terminal 32 and a second AC output terminal 33 that are in opposite phases to each other. The AC power supply 31 may be single-phase or three-phase.
Each of the first power transmission electrodes 21 is electrically connected to the first AC output terminal 32 via an individual first resonance coil 34 . That is, the power transmission device 20 includes first resonance coils 34 corresponding to the respective first power transmission electrodes 21 , and one end of each first resonance coil 34 is electrically connected to the first AC output terminal 32 . The other end of each first resonance coil 34 is electrically connected to the corresponding first power transmission electrode 21 .
Similarly, each of the second power transmission electrodes 22 is electrically connected to the second AC output terminal 33 via an individual second resonance coil 35 . That is, the power transmission device 20 includes a second resonance coil 35 corresponding to each of the second power transmission electrodes 22 , and one end of each second resonance coil 35 is electrically connected to the second AC output terminal 33 . The other end of each second resonance coil 35 is electrically connected to the corresponding second power transmission electrode 22 .
Therefore, the first power transmission electrodes 21 are always in phase with each other, the second power transmission electrodes 22 are always in phase with each other, and the first power transmission electrodes 21 and the second power transmission electrodes 22 are always in opposite phases with each other.
Here, the first power transmission electrode 21 and the first resonance coil 34 corresponding to the first power transmission electrode 21 constitute a first LC resonance element. The first LC resonant element configures a part of the LC resonant circuit when the first power transmitting electrode 21 and the power receiving electrode 11 included in the first LC resonant element are overlapped.
Similarly, the second power transmission electrode 22 and the second resonance coil 35 corresponding to the second power transmission electrode 22 constitute a second LC resonance element. The second LC resonant element constitutes a part of the LC resonant circuit when the second power transmitting electrode 22 and the power receiving electrode 11 included in the second LC resonant element are overlapped.

各第１ＬＣ共振要素の共振周波数は互いに等しく、各第２ＬＣ共振要素の共振周波数は互いに等しく、前記第１ＬＣ共振要素と前記第２ＬＣ共振要素との共振周波数が互いに等しい。
これにより、重なり合った電極間の伝送効率を向上させることができる。
第１ＬＣ共振要素の共振周波数とは、当該第１ＬＣ共振要素に含まれる第１送電電極２１と受電電極１１とが重なったときに構成されるＬＣ共振回路の共振周波数であり、第２ＬＣ共振要素の共振周波数とは、当該第２ＬＣ共振要素に含まれる第２送電電極２２と受電電極１１とが重なったときに構成されるＬＣ共振回路の共振周波数である。
また、２つのＬＣ共振回路どうしの共振周波数が互いに等しいとは、一方のＬＣ共振回路を構成する送電電極と受電電極１１とが所定の重なり面積で重なったときの当該ＬＣ共振回路の共振周波数と、他方のＬＣ共振回路を構成する送電電極と受電電極１１とが上記所定の重なり面積で重なったときの当該ＬＣ共振回路の共振周波数と、が互いに等しいことを意味する。 The resonance frequencies of the first LC resonance elements are equal to each other, the resonance frequencies of the second LC resonance elements are equal to each other, and the resonance frequencies of the first LC resonance element and the second LC resonance elements are equal to each other.
Thereby, the transmission efficiency between the overlapping electrodes can be improved.
The resonance frequency of the first LC resonance element is the resonance frequency of the LC resonance circuit formed when the first power transmission electrode 21 and the power reception electrode 11 included in the first LC resonance element overlap. The resonance frequency is the resonance frequency of the LC resonance circuit formed when the second power transmission electrode 22 and the power reception electrode 11 included in the second LC resonance element are overlapped.
Further, the expression that two LC resonant circuits have the same resonant frequency means that the resonant frequency of the LC resonant circuit when the power transmitting electrode and the power receiving electrode 11 constituting one LC resonant circuit overlap with each other with a predetermined overlapping area. , and the resonance frequency of the other LC resonant circuit when the power transmitting electrode and the power receiving electrode 11 constituting the other LC resonant circuit are overlapped with each other with the predetermined overlapping area.

また、受電装置１０の受電電極１１と送電装置２０の送電電極との間には、高誘電率の絶縁板（例えば、樹脂板）が介在することが好ましい。例えば、筐体１３の受電側対向面１５、又は、筐体２３の送電側対向面２５が平板状の樹脂板により構成されていて、受電側対向面１５や送電側対向面２５がこの絶縁板を構成していてもよい。
このような構成により、送電電極と受電電極１１との間の静電容量を増加させインピーダンスを低下させることができる。 Moreover, it is preferable that an insulating plate (for example, a resin plate) having a high dielectric constant is interposed between the power receiving electrode 11 of the power receiving device 10 and the power transmitting electrode of the power transmitting device 20 . For example, the power receiving side facing surface 15 of the housing 13 or the power transmitting side facing surface 25 of the housing 23 is made of a flat resin plate, and the power receiving side facing surface 15 and the power transmitting side facing surface 25 are made of this insulating plate. may constitute
With such a configuration, it is possible to increase the capacitance between the power transmitting electrode and the power receiving electrode 11 and reduce the impedance.

図４に示すように、受電装置１０は、負荷６０とそれぞれ電気的に接続される第１受電出力端子４１と第２受電出力端子４２とを有する。
受電電極１１の各々は、第１伝送線４３を介して第１受電出力端子４１と電気的に接続されているとともに、第２伝送線４４を介して第２受電出力端子４２と電気的に接続されている。
第１伝送線４３には、第１整流素子として、例えば、第１ダイオード５１が挿入されている。これにより、第１伝送線４３において、電流が受電電極１１から第１受電出力端子４１側に一方向に流れるようになっている。すなわち、第１ダイオード５１は、アノードが受電電極１１側に、カソードが第１受電出力端子４１側に、それぞれ配置されている。
第２伝送線４４には、第１整流素子と同方向に電流を整流する第２整流素子として、例えば、第２ダイオード５２が挿入されている。これにより、第２伝送線４４において、電流が第２受電出力端子４２から受電電極１１側に一方向に流れるようになっている。すなわち、第２ダイオード５２は、アノードが第２受電出力端子４２側に、カソードが受電電極１１側に、それぞれ配置されている。
このように、受電装置１０は、第１伝送線４３、第２伝送線４４、複数の第１ダイオード５１及び複数の第２ダイオード５２を備えている。 As shown in FIG. 4 , the power receiving device 10 has a first power receiving output terminal 41 and a second power receiving output terminal 42 electrically connected to the load 60 .
Each of the power receiving electrodes 11 is electrically connected to the first power receiving output terminal 41 via the first transmission line 43 and electrically connected to the second power receiving output terminal 42 via the second transmission line 44 . It is
For example, a first diode 51 is inserted in the first transmission line 43 as a first rectifying element. As a result, in the first transmission line 43, current flows in one direction from the power receiving electrode 11 to the first power receiving output terminal 41 side. That is, the first diode 51 has an anode disposed on the power receiving electrode 11 side and a cathode disposed on the first power receiving output terminal 41 side.
For example, a second diode 52 is inserted in the second transmission line 44 as a second rectifying element that rectifies the current in the same direction as the first rectifying element. As a result, in the second transmission line 44 , current flows in one direction from the second power receiving output terminal 42 to the power receiving electrode 11 side. That is, the second diode 52 has an anode disposed on the second power receiving output terminal 42 side and a cathode disposed on the power receiving electrode 11 side.
Thus, the power receiving device 10 includes the first transmission line 43 , the second transmission line 44 , the plurality of first diodes 51 and the plurality of second diodes 52 .

ここで、第１伝送線４３は、個々の受電電極１１と対応して配置されていて各々の一端が対応する受電電極１１に対して電気的に接続されている複数の分枝線４３ａと、これら複数の分枝線４３ａの他端に対して一端が電気的に接続されている合流線４３ｂと、により構成されている。合流線４３ｂの他端が、第１受電出力端子４１に対して電気的に接続されている。各分枝線４３ａに、それぞれ第１ダイオード５１が挿入されている。
同様に、第２伝送線４４は、個々の受電電極１１と対応して配置されていて各々の一端が対応する受電電極１１に対して電気的に接続されている複数の分枝線４４ａと、これら複数の分枝線４４ａの他端に対して一端が電気的に接続されている合流線４４ｂと、により構成されている。合流線４４ｂの他端が、第２受電出力端子４２に対して電気的に接続されている。各分枝線４４ａに、それぞれ第２ダイオード５２が挿入されている。 Here, the first transmission line 43 includes a plurality of branch lines 43a arranged corresponding to the respective power receiving electrodes 11 and electrically connected to the corresponding power receiving electrodes 11 at one ends thereof; and a merging line 43b having one end electrically connected to the other end of the plurality of branch lines 43a. The other end of the junction line 43b is electrically connected to the first power reception output terminal 41 . A first diode 51 is inserted in each branch line 43a.
Similarly, the second transmission line 44 includes a plurality of branch lines 44a arranged corresponding to the individual power receiving electrodes 11 and electrically connected to the corresponding power receiving electrodes 11 at one ends of the branch lines 44a, and a merging line 44b having one end electrically connected to the other end of the plurality of branch lines 44a. The other end of the junction line 44b is electrically connected to the second power reception output terminal 42 . A second diode 52 is inserted in each branch line 44a.

受電装置１０は、更に、第１伝送線４３及び第２伝送線４４を流れる電流のリップルを低減する平滑素子を有する。この平滑素子は、例えば、コンデンサ５３、電解コンデンサ５４及び電解コンデンサ５５の３つのコンデンサを含んで構成されている。
平滑素子は、第１伝送線４３における第１ダイオード５１（第１整流素子）と第１受電出力端子４１との間の部分と、第２伝送線４４における第２ダイオード５２（第２整流素子）と第２受電出力端子４２との間の部分と、に接続されている。
より詳細には、平滑素子は、合流線４３ｂと合流線４４ｂとに接続されている。すなわち、コンデンサ５３、電解コンデンサ５４及び電解コンデンサ５５の各々の一端が合流線４３ｂに接続されており、コンデンサ５３、電解コンデンサ５４及び電解コンデンサ５５の各々の他端が合流線４４ｂに接続されている。 The power receiving device 10 further includes a smoothing element that reduces ripples in the current flowing through the first transmission line 43 and the second transmission line 44 . This smoothing element includes, for example, three capacitors, a capacitor 53 , an electrolytic capacitor 54 and an electrolytic capacitor 55 .
The smoothing element is a portion between the first diode 51 (first rectifying element) and the first power receiving output terminal 41 in the first transmission line 43 and a second diode 52 (second rectifying element) in the second transmission line 44. and the second power receiving output terminal 42 .
More specifically, the smoothing element is connected to merge line 43b and merge line 44b. That is, one end of each of the capacitor 53, the electrolytic capacitor 54, and the electrolytic capacitor 55 is connected to the merging line 43b, and the other end of each of the capacitor 53, the electrolytic capacitor 54, and the electrolytic capacitor 55 is connected to the merging line 44b. .

受電装置１０は負荷６０を含んで構成されていてもよいし、受電装置１０の外部の構成であってもよい。後者の場合、負荷６０と電気的に接続されるインターフェースが第１受電出力端子４１及び第２受電出力端子４２を有する。
負荷６０は、特に限定されないが、例えば、スマートフォンなどのような、充電可能な二次電池を有する端末装置であることが挙げられる。 The power receiving device 10 may be configured including the load 60 , or may be configured outside the power receiving device 10 . In the latter case, the interface electrically connected to the load 60 has the first power reception output terminal 41 and the second power reception output terminal 42 .
The load 60 is not particularly limited, but may be, for example, a terminal device having a rechargeable secondary battery, such as a smartphone.

非接触電力伝送システム１００は、以上のように構成されている。
本実施形態に係る受電装置１０は、本実施形態に係る非接触電力伝送システム１００の受電装置１０である。
また、本実施形態に係る送電装置２０は、本実施形態に係る非接触電力伝送システム１００の送電装置２０である。
非接触電力伝送システム１００の受電装置１０は、送電装置２０と組み合わせた非接触電力伝送システム１００として流通する他、受電装置１０の単体で流通してもよい。同様に、送電装置２０も単体で流通してもよい。 The contactless power transmission system 100 is configured as described above.
The power receiving device 10 according to this embodiment is the power receiving device 10 of the contactless power transmission system 100 according to this embodiment.
Further, the power transmission device 20 according to this embodiment is the power transmission device 20 of the contactless power transmission system 100 according to this embodiment.
The power receiving device 10 of the contactless power transmission system 100 may be distributed as the contactless power transmission system 100 in combination with the power transmitting device 20, or may be distributed as the power receiving device 10 alone. Similarly, the power transmission device 20 may be distributed alone.

図５に示す状態は、平面視における筐体１３の４辺と筐体２３との４辺とのうち一辺どうしが平行に配置された状態を示す。
この状態において、Ｃ２の受電電極１１及びＣ８の受電電極１１がそれぞれ対応する第１送電電極２１と重なり、Ｃ６の受電電極１１が第２送電電極２２と重なっている。このため、Ｃ２の受電電極１１、Ｃ８の受電電極１１及びＣ６の受電電極１１には、電界結合によって交流電圧が励起される。励起される交流電圧は、第１送電電極２１及び第２送電電極２２に印加された交流電圧の周波数に相当する周波数と電界結合度に依存する高さとを有する。
また、Ｃ２の受電電極１１及びＣ８の受電電極１１は、いずれも、第２送電電極２２とは重なっておらず、Ｃ６の受電電極１１は第１送電電極２１とは重なっていない。
よって、送電装置２０から受電装置１０へ電力を伝送することができ、送電装置２０から受電装置１０へ良好な伝送効率で電力を伝送することができる。 The state shown in FIG. 5 shows a state in which one of the four sides of the housing 13 and the four sides of the housing 23 in plan view are arranged parallel to each other.
In this state, the power receiving electrodes 11 of C2 and the power receiving electrodes 11 of C8 overlap the corresponding first power transmitting electrodes 21, and the power receiving electrode 11 of C6 overlaps the second power transmitting electrodes 22. As shown in FIG. Therefore, an AC voltage is excited by electric field coupling in the power receiving electrode 11 of C2, the power receiving electrode 11 of C8, and the power receiving electrode 11 of C6. The excited AC voltage has a frequency corresponding to the frequency of the AC voltage applied to the first power transmission electrode 21 and the second power transmission electrode 22 and a height dependent on the degree of electric field coupling.
Further, neither the power receiving electrode 11 of C2 nor the power receiving electrode 11 of C8 overlaps the second power transmitting electrode 22, and the power receiving electrode 11 of C6 does not overlap the first power transmitting electrode 21.
Therefore, power can be transmitted from the power transmitting device 20 to the power receiving device 10, and power can be transmitted from the power transmitting device 20 to the power receiving device 10 with good transmission efficiency.

図６に示す状態は、図５に示す状態から、受電装置１０を送電装置２０に対して相対的に図５における右方に移動させた状態である。
この状態では、Ｃ１の受電電極１１とＣ２の受電電極１１とが共通の第１送電電極２１と重なり、Ｃ５の受電電極１１とＣ６の受電電極１１とが共通の第２送電電極２２と重なり、Ｃ７の受電電極１１とＣ８の受電電極１１とが共通の第１送電電極２１と重なっている。このため、これら受電電極１１には電界結合によって交流電圧が励起される。
また、Ｃ１の受電電極１１、Ｃ２の受電電極１１、Ｃ７の受電電極１１及びＣ８の受電電極１１は、いずれも、第２送電電極２２とは重なっておらず、Ｃ５の受電電極１１及びＣ６の受電電極１１は、いずれも、第１送電電極２１とは重なっていない。
よって、やはり、送電装置２０から受電装置１０へ電力を伝送することができ、送電装置２０から受電装置１０へ良好な伝送効率で電力を伝送することができる。 The state shown in FIG. 6 is a state in which the power receiving device 10 is moved to the right in FIG. 5 relative to the power transmitting device 20 from the state shown in FIG.
In this state, the power receiving electrode 11 of C1 and the power receiving electrode 11 of C2 overlap the common first power transmitting electrode 21, the power receiving electrode 11 of C5 and the power receiving electrode 11 of C6 overlap the common second power transmitting electrode 22, The power receiving electrode 11 of C7 and the power receiving electrode 11 of C8 overlap the common first power transmission electrode 21 . Therefore, an AC voltage is excited in these power receiving electrodes 11 by electric field coupling.
Further, the power receiving electrode 11 of C1, the power receiving electrode 11 of C2, the power receiving electrode 11 of C7 and the power receiving electrode 11 of C8 do not overlap the second power transmitting electrode 22, and the power receiving electrode 11 of C5 and the power receiving electrode 11 of C6 do not overlap each other. None of the power receiving electrodes 11 overlap the first power transmitting electrodes 21 .
Therefore, power can be transmitted from the power transmitting device 20 to the power receiving device 10, and power can be transmitted from the power transmitting device 20 to the power receiving device 10 with good transmission efficiency.

図７に示す状態は、図６に示す状態から、受電装置１０を送電装置２０に対して相対的に図６における下方に移動させた状態である。
この状態では、Ｃ１の受電電極１１とＣ２の受電電極１１とが共通の第１送電電極２１と重なり、Ｃ３の受電電極１１、Ｃ４の受電電極１１、Ｃ５の受電電極１１及びＣ６の受電電極１１が共通の第２送電電極２２と重なり、Ｃ７の受電電極１１とＣ８の受電電極１１とが共通の第１送電電極２１に重なっている。このため、これら受電電極１１には電界結合によって交流電圧が励起される。
また、Ｃ１の受電電極１１、Ｃ２の受電電極１１、Ｃ７の受電電極１１及びＣ８の受電電極１１は、いずれも、第２送電電極２２とは重なっておらず、Ｃ３の受電電極１１、Ｃ４の受電電極１１、Ｃ５の受電電極１１及びＣ６の受電電極１１は、いずれも第１送電電極２１とは重なっていない。
よって、やはり、送電装置２０から受電装置１０へ電力を伝送することができ、送電装置２０から受電装置１０へ良好な伝送効率で電力を伝送することができる。 The state shown in FIG. 7 is a state in which the power receiving device 10 is moved downward in FIG. 6 relative to the power transmitting device 20 from the state shown in FIG. 6 .
In this state, the power receiving electrode 11 of C1 and the power receiving electrode 11 of C2 overlap the common first power transmitting electrode 21, the power receiving electrode 11 of C3, the power receiving electrode 11 of C4, the power receiving electrode 11 of C5 and the power receiving electrode 11 of C6. overlaps the common second power transmitting electrode 22 , and the power receiving electrode 11 of C 7 and the power receiving electrode 11 of C 8 overlap the common first power transmitting electrode 21 . Therefore, an AC voltage is excited in these power receiving electrodes 11 by electric field coupling.
Further, the power receiving electrode 11 of C1, the power receiving electrode 11 of C2, the power receiving electrode 11 of C7 and the power receiving electrode 11 of C8 do not overlap the second power transmitting electrode 22, and the power receiving electrode 11 of C3 and the power receiving electrode 11 of C4 do not overlap each other. None of the power receiving electrode 11 , the power receiving electrode 11 of C<b>5 and the power receiving electrode 11 of C<b>6 overlap the first power transmitting electrode 21 .
Therefore, power can be transmitted from the power transmitting device 20 to the power receiving device 10, and power can be transmitted from the power transmitting device 20 to the power receiving device 10 with good transmission efficiency.

図８に示す状態は、平面視における筐体１３の４辺が筐体２３の４辺に対して４５度傾斜するように受電装置１０を配置し、且つ、送電電極に対する受電電極１１の重なり面積が最も小さくなるようにした状態を示す。
この状態は、Ｃ５の受電電極１１とＣ６の受電電極１１とがそれぞれ対応する第１送電電極２１と重なり、Ｃ７の受電電極１１とＣ８の受電電極１１とがそれぞれ対応する第２送電電極２２と重なっている。このため、これら受電電極１１には電界結合によって交流電圧が励起される。
また、Ｃ５の受電電極１１とＣ６の受電電極１１は、いずれも、第２送電電極２２とは重なっておらず、Ｃ７の受電電極１１とＣ８の受電電極１１は、いずれも第１送電電極２１とは重なっていない。
よって、やはり、送電装置２０から受電装置１０へ電力を伝送することができ、送電装置２０から受電装置１０へ良好な伝送効率で電力を伝送することができる。 In the state shown in FIG. 8, the power receiving device 10 is arranged such that the four sides of the housing 13 in plan view are inclined by 45 degrees with respect to the four sides of the housing 23, and the overlapping area of the power receiving electrodes 11 with respect to the power transmitting electrodes is is minimized.
In this state, the power receiving electrodes 11 of C5 and C6 overlap with the corresponding first power transmitting electrodes 21, and the power receiving electrodes 11 of C7 and C8 overlap with the corresponding second power transmitting electrodes 22, respectively. overlapping. Therefore, an AC voltage is excited in these power receiving electrodes 11 by electric field coupling.
Further, neither the power receiving electrode 11 of C5 nor the power receiving electrode 11 of C6 overlaps the second power transmitting electrode 22, and both the power receiving electrode 11 of C7 and the power receiving electrode 11 of C8 overlap the first power transmitting electrode 21. does not overlap with
Therefore, power can be transmitted from the power transmitting device 20 to the power receiving device 10, and power can be transmitted from the power transmitting device 20 to the power receiving device 10 with good transmission efficiency.

また、図示は省略するが、受電装置１０を送電装置２０に対して図５から図８に示す以外の位置に移動させても、受電装置１０を送電装置２０に対して図５から図８に示す以外の回転角度で配置しても、（Ａ）少なくとも受電面Ａ１の全面が送電面Ａ２と重ねて配置されている限りにおいて、又は、（Ｂ）少なくとも受電側対向面１５の全面が送電側対向面２５と重ねて配置されている限りにおいて、又は、（Ｃ）少なくとも受電面Ａ１の全面が送電側対向面２５と重ねて配置されている限りにおいて、又は、（Ｄ）少なくとも受電側対向面１５の全面が送電面Ａ２と重ねて配置されている限りにおいて、常に、１つ以上の受電電極１１が第１送電電極２１と重なるとともに他の１つ以上の受電電極１１が第２送電電極２２と重なり、且つ、送電電極と重なるいずれの受電電極１１も第１送電電極２１又は第２送電電極２２の一方にのみ重なる。
つまり、いずれの受電電極１１も第１送電電極２１と第２送電電極２２とを跨ぐことはない。より詳細には、本実施形態の場合、いずれの受電電極１１も、複数の送電電極を跨ぐことはない（第１送電電極２１どうしを跨ぐことも、第２送電電極２２どうしを跨ぐこともない）。
このため、送電装置２０から受電装置１０へ良好な伝送効率で電力を伝送することが可能である。 Although not shown, even if the power receiving device 10 is moved to a position other than that shown in FIGS. Even if it is arranged at a rotation angle other than that shown, (A) at least the entire surface of the power receiving surface A1 is overlapped with the power transmitting surface A2, or (B) at least the entire surface of the power receiving side facing surface 15 is on the power transmitting side. As long as it overlaps with the facing surface 25, or (C) at least as long as the entire surface of the power receiving surface A1 overlaps with the power transmission side facing surface 25, or (D) at least the power receiving side facing surface 15 are arranged to overlap the power transmission surface A2, one or more power receiving electrodes 11 always overlap the first power transmission electrode 21 and the other one or more power reception electrodes 11 overlap the second power transmission electrode 22. , and any power receiving electrode 11 that overlaps with the power transmitting electrode overlaps only one of the first power transmitting electrode 21 and the second power transmitting electrode 22 .
That is, none of the power receiving electrodes 11 straddle the first power transmitting electrode 21 and the second power transmitting electrode 22 . More specifically, in the case of the present embodiment, none of the power receiving electrodes 11 straddles a plurality of power transmission electrodes (they do not straddle the first power transmission electrodes 21 nor straddle the second power transmission electrodes 22). ).
Therefore, power can be transmitted from the power transmitting device 20 to the power receiving device 10 with good transmission efficiency.

ここで、特許文献１の技術では、電界結合している送電電極を判定し、当該送電電極と対応するスイッチをオンにする制御を、ＣＰＵが行う。
これに対し、本実施形態の場合、送電装置２０において、各送電電極と対応してコイル（第１共振コイル３４又は第２共振コイル３５が設けられている。このため、受電電極１１が重なった送電電極を有するＬＣ共振回路においてのみ共振条件が成立し、当該ＬＣ共振回路のみが高圧になり、その他のＬＣ共振回路の送電電極は共振条件が成立しないので低圧のままとなる。
よって、本実施形態の場合、特許文献１の技術とは異なり、ＣＰＵによるスイッチの制御が不要である。 Here, in the technique disclosed in Patent Literature 1, the CPU determines the power transmission electrodes that are electrically coupled and turns on the switches corresponding to the power transmission electrodes.
On the other hand, in the case of the present embodiment, the power transmission device 20 is provided with a coil (the first resonance coil 34 or the second resonance coil 35) corresponding to each power transmission electrode. The resonance condition is satisfied only in the LC resonance circuit having the power transmission electrode, and only the LC resonance circuit has a high voltage.
Therefore, in the case of this embodiment, unlike the technique of Patent Document 1, control of the switch by the CPU is unnecessary.

〔第２実施形態〕
次に、図９及び図１０を用いて第２実施形態を説明する。
本実施形態の場合、受電装置１０の構成が、上記の第１実施形態と相違しており、それ以外の構成は、第１実施形態と同様である。 [Second embodiment]
Next, a second embodiment will be described with reference to FIGS. 9 and 10. FIG.
In the case of this embodiment, the configuration of the power receiving device 10 is different from that of the above-described first embodiment, and the configuration other than that is the same as that of the first embodiment.

本実施形態の場合、受電面が送電面に重ねて配置されている状態において、送電面に対する受電面の位置及び向きにかかわらず、複数の受電電極１１のうち、２つ以上の受電電極１１が一の第１送電電極２１と重なるとともに他の２つ以上の受電電極１１が一の第２送電電極２２と重なるように、複数の送電電極と複数の受電電極１１とが配置されている（図１０参照）。
このことを実現するため、図９に示すように、受電装置１０において、第１実施形態と比べてより多くの受電電極１１が密集して配置されている。
本実施形態の場合、複数の受電電極１１の各々の外径が、送電電極の外径の半分未満である。 In the case of the present embodiment, in a state in which the power receiving surface is superimposed on the power transmitting surface, two or more of the power receiving electrodes 11 out of the plurality of power receiving electrodes 11 are arranged regardless of the position and orientation of the power receiving surface with respect to the power transmitting surface. A plurality of power transmission electrodes and a plurality of power reception electrodes 11 are arranged so that one first power transmission electrode 21 overlaps and two or more other power reception electrodes 11 overlap one second power transmission electrode 22 (FIG. 10).
To achieve this, as shown in FIG. 9, in the power receiving device 10, more power receiving electrodes 11 are densely arranged than in the first embodiment.
In the case of this embodiment, the outer diameter of each of the plurality of power receiving electrodes 11 is less than half the outer diameter of the power transmitting electrodes.

以上、図面を参照して各実施形態を説明したが、これらは本発明の例示であり、上記以外の様々な構成を採用することもできる。また、上記の各実施形態は、本発明の主旨を逸脱しない範囲で、適宜に組み合わせることができる。 Although each embodiment has been described above with reference to the drawings, these are examples of the present invention, and various configurations other than those described above can be employed. Moreover, each of the above-described embodiments can be appropriately combined without departing from the gist of the present invention.

本実施形態は以下の技術思想を包含する。
（１）交流電源と、それぞれ前記交流電源と電気的に接続されているとともに送電面に沿って配置されている複数の送電電極と、を有する送電装置と、
前記送電面に重ねて配置される受電面に沿って配置されていて前記送電電極と電界結合される複数の受電電極を有し、前記送電装置から非接触で電力供給を受ける受電装置と、
を備える非接触電力伝送システムであって、
前記複数の送電電極には、互いに逆位相となる複数の第１送電電極と複数の第２送電電極とが含まれ、
前記受電面が前記送電面に重ねて配置されている状態において、前記送電面と前記受電面との相対的な位置及び相対的な向きにかかわらず、（１）前記複数の受電電極のうち１つ以上の受電電極が前記第１送電電極と重なるとともに他の１つ以上の受電電極が前記第２送電電極と重なり、且つ、（２）前記送電電極と重なるいずれの受電電極も前記第１送電電極又は前記第２送電電極の一方にのみ重なる、という条件を満たし得るように、前記複数の送電電極と前記複数の受電電極とが配置されている非接触電力伝送システム。
（２）前記第１送電電極と前記第２送電電極とが交互に配置されている（１）に記載の非接触電力伝送システム。
（３）前記複数の送電電極は格子状に配置されている（１）又は（２）に記載の非接触電力伝送システム。
（４）前記複数の送電電極のうち隣り合う送電電極間の間隙が、前記受電電極の外径よりも大きい（１）から（３）のいずれか一項に記載の非接触電力伝送システム。
（５）前記複数の受電電極は格子状に配置されている（１）から（４）のいずれか一項に記載の非接触電力伝送システム。
（６）前記複数の受電電極のうち隣り合う受電電極間の間隙が、前記送電電極の外径よりも小さい（１）から（５）のいずれか一項に記載の非接触電力伝送システム。
（７）交流電源と、それぞれ前記交流電源と電気的に接続されているとともに送電面に沿って配置されている複数の送電電極と、を有する送電装置と、
前記送電面に重ねて配置される受電面に沿って配置されていて前記送電電極と電界結合される複数の受電電極を有し、前記送電装置から非接触で電力供給を受ける受電装置と、
を備える非接触電力伝送システムであって、
前記複数の送電電極には、互いに逆位相となる第１送電電極と第２送電電極とが含まれ、
前記複数の送電電極は格子状に配置されており、
前記第１送電電極と前記第２送電電極とが交互に配置されており、
前記複数の送電電極のうち隣り合う送電電極間の間隙が、前記受電電極の外径よりも大きく、
前記複数の受電電極は格子状に配置されており、
前記複数の受電電極のうち隣り合う受電電極間の間隙が、前記送電電極の外径よりも小さい非接触電力伝送システム。
（８）前記複数の送電電極の各々は正方形状に形成されている（１）から（７）のいずれか一項に記載の非接触電力伝送システム。
（９）前記複数の受電電極の各々は円形状に形成されている（１）から（８）のいずれか一項に記載の非接触電力伝送システム。
（１０）前記複数の受電電極の各々の外径が、前記複数の送電電極の外径の半分以上である（１）から（９）のいずれか一項に記載の非接触電力伝送システム。
（１１）前記交流電源は、互いに逆位相となる第１交流出力端子と第２交流出力端子とを有し、
前記第１送電電極の各々は、個別の第１共振コイルを介して、前記第１交流出力端子と電気的に接続されており、
前記第１送電電極と、当該第１送電電極と対応する前記第１共振コイルとにより、第１ＬＣ共振要素が構成されており、
前記第２送電電極の各々は、個別の第２共振コイルを介して、前記第２交流出力端子と電気的に接続されており、
前記第２送電電極と、当該第２送電電極と対応する前記第２共振コイルとにより、第２ＬＣ共振要素が構成されている（１）から（１０）のいずれか一項に記載の非接触電力伝送システム。
（１２）前記第１ＬＣ共振要素の各々の共振周波数が互いに等しく、前記第２ＬＣ共振要素の各々の共振周波数が互いに等しく、前記第１ＬＣ共振要素と前記第２ＬＣ共振要素との共振周波数が互いに等しい（１１）に記載の非接触電力伝送システム。
（１３）前記受電装置は、負荷とそれぞれ電気的に接続される第１受電出力端子と第２受電出力端子とを有し、
前記受電電極の各々は、第１伝送線を介して前記第１受電出力端子と電気的に接続されているとともに、第２伝送線を介して前記第２受電出力端子と電気的に接続されており、
前記第１伝送線には、第１整流素子が挿入されており、
前記第２伝送線には、前記第１整流素子と同方向に電流を整流する第２整流素子が挿入されている（１）から（１２）のいずれか一項に記載の非接触電力伝送システム。
（１４）（１）から（１３）のいずれか一項に記載の非接触電力伝送システムの前記送電装置。
（１５）（１）から（１３）のいずれか一項に記載の非接触電力伝送システムの前記受電装置。 This embodiment includes the following technical ideas.
(1) a power transmission device having an AC power supply and a plurality of power transmission electrodes electrically connected to the AC power supply and arranged along a power transmission surface;
a power receiving device that has a plurality of power receiving electrodes that are arranged along a power receiving surface that is arranged to overlap the power transmitting surface and is electrically coupled to the power transmitting electrodes, and receives power from the power transmitting device in a contactless manner;
A contactless power transmission system comprising:
The plurality of power transmission electrodes include a plurality of first power transmission electrodes and a plurality of second power transmission electrodes having phases opposite to each other,
In a state in which the power receiving surface is superimposed on the power transmitting surface, regardless of the relative positions and relative orientations of the power transmitting surface and the power receiving surface, (1) one of the plurality of power receiving electrodes At least one power receiving electrode overlaps the first power transmitting electrode and at least one other power receiving electrode overlaps the second power transmitting electrode; and (2) any power receiving electrode overlapping the power transmitting electrode is the first power transmitting electrode. A contactless power transmission system, wherein the plurality of power transmission electrodes and the plurality of power reception electrodes are arranged so as to satisfy the condition that they overlap only one of the electrodes or the second power transmission electrodes.
(2) The contactless power transmission system according to (1), in which the first power transmission electrodes and the second power transmission electrodes are alternately arranged.
(3) The contactless power transmission system according to (1) or (2), wherein the plurality of power transmission electrodes are arranged in a grid.
(4) The contactless power transmission system according to any one of (1) to (3), wherein a gap between adjacent power transmitting electrodes among the plurality of power transmitting electrodes is larger than an outer diameter of the power receiving electrode.
(5) The contactless power transmission system according to any one of (1) to (4), wherein the plurality of power receiving electrodes are arranged in a grid.
(6) The contactless power transmission system according to any one of (1) to (5), wherein a gap between adjacent power receiving electrodes among the plurality of power receiving electrodes is smaller than an outer diameter of the power transmitting electrode.
(7) a power transmission device having an AC power supply and a plurality of power transmission electrodes electrically connected to the AC power supply and arranged along a power transmission surface;
a power receiving device that has a plurality of power receiving electrodes that are arranged along a power receiving surface that is arranged to overlap the power transmitting surface and is electrically coupled to the power transmitting electrodes, and receives power from the power transmitting device in a contactless manner;
A contactless power transmission system comprising:
The plurality of power transmission electrodes include a first power transmission electrode and a second power transmission electrode having opposite phases to each other,
The plurality of power transmission electrodes are arranged in a lattice,
The first power transmission electrodes and the second power transmission electrodes are alternately arranged,
a gap between adjacent power transmitting electrodes among the plurality of power transmitting electrodes is larger than an outer diameter of the power receiving electrode;
The plurality of power receiving electrodes are arranged in a grid,
The non-contact power transmission system, wherein a gap between adjacent power receiving electrodes among the plurality of power receiving electrodes is smaller than an outer diameter of the power transmitting electrode.
(8) The contactless power transmission system according to any one of (1) to (7), wherein each of the plurality of power transmission electrodes is formed in a square shape.
(9) The contactless power transmission system according to any one of (1) to (8), wherein each of the plurality of power receiving electrodes is circular.
(10) The contactless power transmission system according to any one of (1) to (9), wherein the outer diameter of each of the plurality of power receiving electrodes is half or more of the outer diameter of the plurality of power transmitting electrodes.
(11) The AC power supply has a first AC output terminal and a second AC output terminal having opposite phases,
Each of the first power transmission electrodes is electrically connected to the first AC output terminal via an individual first resonance coil,
A first LC resonance element is configured by the first power transmission electrode and the first resonance coil corresponding to the first power transmission electrode,
Each of the second power transmission electrodes is electrically connected to the second AC output terminal via an individual second resonance coil,
The contactless power according to any one of (1) to (10), wherein the second power transmission electrode and the second resonance coil corresponding to the second power transmission electrode constitute a second LC resonance element. transmission system.
(12) The resonance frequencies of the first LC resonance elements are equal to each other, the resonance frequencies of the second LC resonance elements are equal to each other, and the resonance frequencies of the first LC resonance element and the second LC resonance element are equal to each other ( 11) The contactless power transmission system according to 11).
(13) the power receiving device has a first power receiving output terminal and a second power receiving output terminal electrically connected to a load, respectively;
Each of the power receiving electrodes is electrically connected to the first power receiving output terminal via a first transmission line and electrically connected to the second power receiving output terminal via a second transmission line. cage,
A first rectifying element is inserted in the first transmission line,
The contactless power transmission system according to any one of (1) to (12), wherein a second rectifying element that rectifies current in the same direction as the first rectifying element is inserted in the second transmission line. .
(14) The power transmission device of the contactless power transmission system according to any one of (1) to (13).
(15) The power receiving device of the contactless power transmission system according to any one of (1) to (13).

１０ 受電装置
１１、Ｃ１、Ｃ２、Ｃ３、Ｃ４、Ｃ５、Ｃ６、Ｃ７、Ｃ８ 受電電極
１３ 筐体
１５ 受電側対向面
２０ 送電装置
２１ 第１送電電極
２２ 第２送電電極
２３ 筐体
２５ 送電側対向面
３１ 交流電源
３２ 第１交流出力端子
３３ 第２交流出力端子
３４ 第１共振コイル
３５ 第２共振コイル
４１ 第１受電出力端子
４２ 第２受電出力端子
４３ 第１伝送線
４３ａ 分枝線
４３ｂ 合流線
４４ 第２伝送線
４４ａ 分枝線
４４ｂ 合流線
５１ 第１ダイオード（第１整流素子）
５２ 第２ダイオード（第２整流素子）
５３ コンデンサ（平滑素子）
５４ 電解コンデンサ（平滑素子）
５５ 電解コンデンサ（平滑素子）
６０ 負荷
１００ 非接触電力伝送システム
Ｅ１ 包絡線
Ｅ２ 包絡線
Ａ１ 受電面
Ａ２ 送電面 10 power receiving device 11, C1, C2, C3, C4, C5, C6, C7, C8 power receiving electrode 13 housing 15 power receiving side facing surface 20 power transmitting device 21 first power transmitting electrode 22 second power transmitting electrode 23 housing 25 power transmitting side facing Surface 31 AC power supply 32 First AC output terminal 33 Second AC output terminal 34 First resonance coil 35 Second resonance coil 41 First power receiving output terminal 42 Second power receiving output terminal 43 First transmission line 43a Branch line 43b Combined line 44 Second transmission line 44a Branch line 44b Junction line 51 First diode (first rectifying element)
52 second diode (second rectifying element)
53 capacitor (smoothing element)
54 electrolytic capacitor (smoothing element)
55 electrolytic capacitor (smoothing element)
60 load 100 contactless power transmission system E1 envelope E2 envelope A1 power receiving surface A2 power transmission surface

Claims (12)

交流電源と、それぞれ前記交流電源と電気的に接続されているとともに送電面に沿って配置されている複数の送電電極と、を有する送電装置と、
前記送電面に重ねて配置される受電面に沿って配置されていて前記送電電極と電界結合される複数の受電電極を有し、前記送電装置から非接触で電力供給を受ける受電装置と、
を備える非接触電力伝送システムであって、
前記複数の送電電極には、互いに逆位相となる複数の第１送電電極と複数の第２送電電極とが含まれ、
前記受電面が前記送電面に重ねて配置されている状態において、前記送電面と前記受電面との相対的な位置及び相対的な向きにかかわらず、（１）前記複数の受電電極のうち１つ以上の受電電極が前記第１送電電極と重なるとともに他の１つ以上の受電電極が前記第２送電電極と重なり、且つ、（２）前記送電電極と重なるいずれの受電電極も前記第１送電電極又は前記第２送電電極の一方にのみ重なる、という条件を満たし得るように、前記複数の送電電極と前記複数の受電電極とが配置されており、
前記複数の受電電極の各々は円形状に形成されており、
前記複数の送電電極の各々は正方形状に形成されており、
前記複数の受電電極の各々の外径が、前記複数の送電電極の一辺の長さの半分以上であり且つ前記複数の送電電極の一辺の長さよりも小さく、
互いに隣り合う前記受電電極の中心間距離が前記送電電極の対角線の長さよりも大きく、一の前記送電電極に重なり得る前記受電電極の中心が１つ以下である非接触電力伝送システム。 a power transmission device having an AC power source and a plurality of power transmission electrodes electrically connected to the AC power source and arranged along a power transmission surface;
a power receiving device that has a plurality of power receiving electrodes that are arranged along a power receiving surface that is arranged to overlap the power transmitting surface and is electrically coupled to the power transmitting electrodes, and receives power from the power transmitting device in a contactless manner;
A contactless power transmission system comprising:
The plurality of power transmission electrodes include a plurality of first power transmission electrodes and a plurality of second power transmission electrodes having phases opposite to each other,
In a state in which the power receiving surface is superimposed on the power transmitting surface, regardless of the relative positions and relative orientations of the power transmitting surface and the power receiving surface, (1) one of the plurality of power receiving electrodes At least one power receiving electrode overlaps the first power transmitting electrode and at least one other power receiving electrode overlaps the second power transmitting electrode; and (2) any power receiving electrode overlapping the power transmitting electrode is the first power transmitting electrode. The plurality of power transmitting electrodes and the plurality of power receiving electrodes are arranged so as to satisfy the condition that they overlap only one of the electrodes or the second power transmitting electrodes,
each of the plurality of power receiving electrodes is formed in a circular shape,
each of the plurality of power transmission electrodes is formed in a square shape,
the outer diameter of each of the plurality of power receiving electrodes is half or more of the length of one side of the plurality of power transmitting electrodes and smaller than the length of one side of the plurality of power transmitting electrodes ;
A contactless power transmission system, wherein the distance between the centers of the power receiving electrodes adjacent to each other is greater than the length of the diagonal line of the power transmitting electrodes, and the number of centers of the power receiving electrodes that can overlap one power transmitting electrode is one or less. 前記第１送電電極と前記第２送電電極とが交互に配置されている請求項１に記載の非接触電力伝送システム。 The contactless power transmission system according to claim 1, wherein the first power transmission electrodes and the second power transmission electrodes are alternately arranged. 前記複数の送電電極は格子状に配置されている請求項１又は２に記載の非接触電力伝送システム。 3. The contactless power transmission system according to claim 1, wherein the plurality of power transmission electrodes are arranged in a lattice. 前記複数の送電電極のうち隣り合う送電電極間の間隙が、前記受電電極の外径よりも大きい請求項１から３のいずれか一項に記載の非接触電力伝送システム。 The contactless power transmission system according to any one of claims 1 to 3, wherein a gap between adjacent power transmission electrodes among the plurality of power transmission electrodes is larger than an outer diameter of the power reception electrodes. 前記複数の受電電極は格子状に配置されている請求項１から４のいずれか一項に記載の非接触電力伝送システム。 The contactless power transmission system according to any one of claims 1 to 4, wherein the plurality of power receiving electrodes are arranged in a lattice. 前記複数の受電電極のうち隣り合う受電電極間の間隙が、前記送電電極の外径よりも小さい請求項１から５のいずれか一項に記載の非接触電力伝送システム。 The contactless power transmission system according to any one of claims 1 to 5, wherein a gap between adjacent power receiving electrodes among the plurality of power receiving electrodes is smaller than an outer diameter of the power transmitting electrode. 交流電源と、それぞれ前記交流電源と電気的に接続されているとともに送電面に沿って配置されている複数の送電電極と、を有する送電装置と、
前記送電面に重ねて配置される受電面に沿って配置されていて前記送電電極と電界結合される複数の受電電極を有し、前記送電装置から非接触で電力供給を受ける受電装置と、
を備える非接触電力伝送システムであって、
前記複数の送電電極には、互いに逆位相となる第１送電電極と第２送電電極とが含まれ、
前記複数の送電電極は格子状に配置されており、
前記第１送電電極と前記第２送電電極とが交互に配置されており、
前記複数の送電電極のうち隣り合う送電電極間の間隙が、前記受電電極の外径よりも大きく、
前記複数の受電電極は格子状に配置されており、
前記複数の受電電極のうち隣り合う受電電極間の間隙が、前記送電電極の外径よりも小さく、
前記複数の受電電極の各々は円形状に形成されており、
前記複数の送電電極の各々は正方形状に形成されており、
前記複数の受電電極の各々の外径が、前記複数の送電電極の一辺の長さの半分以上であり且つ前記複数の送電電極の一辺の長さよりも小さく、
互いに隣り合う前記受電電極の中心間距離が前記送電電極の対角線の長さよりも大きく、一の前記送電電極に重なり得る前記受電電極の中心が１つ以下である非接触電力伝送システム。 a power transmission device having an AC power source and a plurality of power transmission electrodes electrically connected to the AC power source and arranged along a power transmission surface;
a power receiving device that has a plurality of power receiving electrodes that are arranged along a power receiving surface that is arranged to overlap the power transmitting surface and is electrically coupled to the power transmitting electrodes, and receives power from the power transmitting device in a contactless manner;
A contactless power transmission system comprising:
The plurality of power transmission electrodes include a first power transmission electrode and a second power transmission electrode having opposite phases to each other,
The plurality of power transmission electrodes are arranged in a lattice,
The first power transmission electrodes and the second power transmission electrodes are alternately arranged,
a gap between adjacent power transmitting electrodes among the plurality of power transmitting electrodes is larger than an outer diameter of the power receiving electrode;
The plurality of power receiving electrodes are arranged in a grid,
a gap between adjacent power receiving electrodes among the plurality of power receiving electrodes is smaller than an outer diameter of the power transmitting electrode;
each of the plurality of power receiving electrodes is formed in a circular shape,
each of the plurality of power transmission electrodes is formed in a square shape,
the outer diameter of each of the plurality of power receiving electrodes is half or more of the length of one side of the plurality of power transmitting electrodes and smaller than the length of one side of the plurality of power transmitting electrodes ;
A contactless power transmission system, wherein the distance between the centers of the power receiving electrodes adjacent to each other is greater than the length of the diagonal line of the power transmitting electrodes, and the number of centers of the power receiving electrodes that can overlap one power transmitting electrode is one or less. 前記交流電源は、互いに逆位相となる第１交流出力端子と第２交流出力端子とを有し、
前記第１送電電極の各々は、個別の第１共振コイルを介して、前記第１交流出力端子と電気的に接続されており、
前記第１送電電極と、当該第１送電電極と対応する前記第１共振コイルとにより、第１ＬＣ共振要素が構成されており、
前記第２送電電極の各々は、個別の第２共振コイルを介して、前記第２交流出力端子と電気的に接続されており、
前記第２送電電極と、当該第２送電電極と対応する前記第２共振コイルとにより、第２ＬＣ共振要素が構成されている請求項１から７のいずれか一項に記載の非接触電力伝送システム。 The AC power supply has a first AC output terminal and a second AC output terminal having opposite phases to each other,
Each of the first power transmission electrodes is electrically connected to the first AC output terminal via an individual first resonance coil,
A first LC resonance element is configured by the first power transmission electrode and the first resonance coil corresponding to the first power transmission electrode,
Each of the second power transmission electrodes is electrically connected to the second AC output terminal via an individual second resonance coil,
The contactless power transmission system according to any one of claims 1 to 7 , wherein the second power transmission electrode and the second resonance coil corresponding to the second power transmission electrode constitute a second LC resonance element. . 前記第１ＬＣ共振要素の各々の共振周波数が互いに等しく、前記第２ＬＣ共振要素の各々の共振周波数が互いに等しく、前記第１ＬＣ共振要素と前記第２ＬＣ共振要素との共振周波数が互いに等しい請求項８に記載の非接触電力伝送システム。 9. The resonant frequency of each of the first LC resonant elements is equal to each other, the resonant frequency of each of the second LC resonant elements is equal to each other, and the resonant frequencies of the first LC resonant element and the second LC resonant element are equal to each other. A contactless power transfer system as described. 前記受電装置は、負荷とそれぞれ電気的に接続される第１受電出力端子と第２受電出力端子とを有し、
前記受電電極の各々は、第１伝送線を介して前記第１受電出力端子と電気的に接続されているとともに、第２伝送線を介して前記第２受電出力端子と電気的に接続されており、
前記第１伝送線には、第１整流素子が挿入されており、
前記第２伝送線には、前記第１整流素子と同方向に電流を整流する第２整流素子が挿入されている請求項１から９のいずれか一項に記載の非接触電力伝送システム。 the power receiving device has a first power receiving output terminal and a second power receiving output terminal electrically connected to a load, respectively;
Each of the power receiving electrodes is electrically connected to the first power receiving output terminal via a first transmission line and electrically connected to the second power receiving output terminal via a second transmission line. cage,
A first rectifying element is inserted in the first transmission line,
The contactless power transmission system according to any one of claims 1 to 9 , wherein a second rectifying element that rectifies current in the same direction as the first rectifying element is inserted in the second transmission line. 請求項１から１０のいずれか一項に記載の非接触電力伝送システムの前記送電装置。 The power transmission device of the contactless power transmission system according to any one of claims 1 to 10. 請求項１から１０のいずれか一項に記載の非接触電力伝送システムの前記受電装置。 The power receiving device of the contactless power transmission system according to any one of claims 1 to 10.
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JP2014150646A (en) 2013-01-31 2014-08-21 Furukawa Electric Co Ltd:The Non-contact power transmission system
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JP2010148287A (en) 2008-12-19 2010-07-01 Takenaka Komuten Co Ltd Power supply system
WO2012086411A1 (en) 2010-12-24 2012-06-28 株式会社村田製作所 Wireless electrical power transmission system, electrical power transmission device, and electrical power receiving device
WO2013153841A1 (en) 2012-04-13 2013-10-17 株式会社 村田製作所 Non-contact power transmission system
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