JP2011049230A - Noncontact power supply device - Google Patents

Noncontact power supply device Download PDF

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Publication number
JP2011049230A
JP2011049230A JP2009194424A JP2009194424A JP2011049230A JP 2011049230 A JP2011049230 A JP 2011049230A JP 2009194424 A JP2009194424 A JP 2009194424A JP 2009194424 A JP2009194424 A JP 2009194424A JP 2011049230 A JP2011049230 A JP 2011049230A
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Prior art keywords
power
power feeding
power receiving
receiving unit
power supply
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JP5354539B2 (en
Inventor
Shigeru Abe
茂 阿部
Hiroyoshi Kaneko
裕良 金子
Tomio Yasuda
富夫 保田
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Technova Inc
Saitama University NUC
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Technova Inc
Saitama University NUC
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/14—Inductive couplings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
    • B60L53/12—Inductive energy transfer
    • B60L53/126—Methods for pairing a vehicle and a charging station, e.g. establishing a one-to-one relation between a wireless power transmitter and a wireless power receiver
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/36—Electric or magnetic shields or screens
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/36—Electric or magnetic shields or screens
    • H01F27/363—Electric or magnetic shields or screens made of electrically conductive material
    • 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
    • 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
    • H02J50/90—Circuit arrangements or systems for wireless supply or distribution of electric power involving detection or optimisation of position, e.g. alignment
    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2270/00—Problem solutions or means not otherwise provided for
    • B60L2270/10—Emission reduction
    • B60L2270/14—Emission reduction of noise
    • B60L2270/147—Emission reduction of noise electro magnetic [EMI]
    • 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
    • H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
    • H02J2310/40—The network being an on-board power network, i.e. within a vehicle
    • H02J2310/48—The network being an on-board power network, i.e. within a vehicle for electric vehicles [EV] or hybrid vehicles [HEV]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/14—Plug-in electric vehicles

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Secondary Cells (AREA)
  • Current-Collector Devices For Electrically Propelled Vehicles (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a noncontact power supply device capable of suppressing an influence of leakage magnetic flux due to a position shift between a power supply part 53 and a power reception part 42. <P>SOLUTION: The noncontact power supply device is characterized in that a ground side includes a flat plate type power supply part 53 including a primary-side coil and AC power sources 50 and 51 of the power supply part 53, and a vehicle 40 includes a flat plate type power reception part 42 including a secondary-side coil and a load device 44 electrically connected to the power reception part 42, wherein the power reception part 42 is fixed to the vehicle through a secondary-side shield plate 41 adapted to cut off leakage magnetic flux, and the secondary-side shield plate 41 is made of a nonmagnetic good conductor and set to a size such that even when the vehicle stops at some position within a moving body stop range wherein power supply from the ground side is allowed, the substantially entire region of the power supply part 53 is positioned below the secondary-side shield plate 42. Consequently, the leakage magnetic flux is prevented from extending to the vehicle body even when an allowable amount of a position shift between the power supply part 42 and power reception part 53 is large. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、電気自動車などの移動体に非接触で給電する非接触給電装置に関し、給電時に給電側と受電側との間に位置ずれが生じたときの対策を講ずるものである。   The present invention relates to a non-contact power feeding device that feeds power to a moving body such as an electric vehicle in a non-contact manner, and takes measures when a displacement occurs between a power feeding side and a power receiving side during power feeding.

非接触給電装置は、一次コイルと二次コイルとの間の電磁誘導を利用して一次コイルから二次コイルに電力を供給する。この非接触給電装置は、電気自動車やプラグインハイブリッド車に搭載された二次電池を充電するための給電装置として、利用の拡大が見込まれている。
図１３は、非接触給電装置を用いたプラグインハイブリッド車の給電システムを示している。
エンジン１０７とともにモータ１０６を駆動源として搭載する車両１００は、モータ１０６用の電源である二次電池１０４と、二次電池１０４の直流を交流に変換してモータ１０６に供給するインバータ１０５と、二次電池１０４の充電回路１０３と、非接触給電装置の二次コイル１０２とを備えており、二次コイル１０２は、車体の床面の外側に設置される。
一方、給電ステーション側（地上側）は、商用周波数の交流電源２００と、この交流を直流に変換し、さらに高周波交流を生成するインバータ２０１と、非接触給電装置の１次コイル２０２とを備えており、１次コイル２０２は地上に設置される。
運転者は、二次コイル１０２が一次コイル２０２の真上に来るように車両１００を停止させて、二次電池１０４への給電を開始する。 The non-contact power feeding device supplies power from the primary coil to the secondary coil using electromagnetic induction between the primary coil and the secondary coil. This non-contact power supply device is expected to expand its use as a power supply device for charging a secondary battery mounted on an electric vehicle or a plug-in hybrid vehicle.
FIG. 13 shows a power supply system for a plug-in hybrid vehicle using a non-contact power supply device.
A vehicle 100 equipped with a motor 106 as a drive source together with an engine 107 includes a secondary battery 104 that is a power source for the motor 106, an inverter 105 that converts the direct current of the secondary battery 104 into alternating current, and supplies the alternating current to the motor 106, The charging circuit 103 of the secondary battery 104 and the secondary coil 102 of the non-contact power feeding device are provided, and the secondary coil 102 is installed outside the floor surface of the vehicle body.
On the other hand, the power supply station side (the ground side) includes a commercial frequency AC power supply 200, an inverter 201 that converts this AC to DC and generates high frequency AC, and a primary coil 202 of a non-contact power supply device. The primary coil 202 is installed on the ground.
The driver stops the vehicle 100 so that the secondary coil 102 is directly above the primary coil 202, and starts supplying power to the secondary battery 104.

この非接触給電装置で用いる一次コイル、二次コイルについては、種々の形状のものが開発されている。
図１４は、下記特許文献１に開示されたコイルの断面形状（ａ）及び平面形状（ｂ）を概略的に示している。この装置の１次側は、フラットなフェライト円板から成る磁心コア２１と、磁心コア２１の片面に渦巻き状に巻回された１次コイル２２とを備えている。２次側も１次側と同一形状であり、この１次コイル２２と２次コイル３２とが、ギャップｇを介して対向している。点線Ｄは磁束線を示している。 About the primary coil and secondary coil which are used with this non-contact electric power feeder, the thing of various shapes has been developed.
FIG. 14 schematically shows a cross-sectional shape (a) and a planar shape (b) of a coil disclosed in Patent Document 1 below. The primary side of the apparatus includes a magnetic core 21 made of a flat ferrite disk and a primary coil 22 wound around one side of the magnetic core 21 in a spiral shape. The secondary side has the same shape as the primary side, and the primary coil 22 and the secondary coil 32 are opposed to each other through the gap g. A dotted line D indicates a magnetic flux line.

なお、この明細書では、１次コイルと磁性体コアとの組合せを給電部と呼び、２次コイルと磁性体コアとの組合せを受電部と呼ぶことにする。但し、給電部には、磁性体コアを持たない１次コイルだけのものも含まれ、受電部には、磁性体コアを持たない２次コイルだけのものも含まれる。   In this specification, a combination of the primary coil and the magnetic core is referred to as a power feeding unit, and a combination of the secondary coil and the magnetic core is referred to as a power receiving unit. However, the power feeding unit includes only a primary coil that does not have a magnetic core, and the power receiving unit includes only a secondary coil that does not have a magnetic core.

図１５は、下記特許文献２に開示された非接触給電装置の受電部を示している。この受電部は、フェライトからなる長方形の板状ブロック２１２を多数組み合わせて板状コア２１３を形成し、この板状コア２１３の片面に扁平に巻いたコイル２２２を配置している。
また、図１６には、本発明の発明者らが開発した給電部及び受電部を示している。
この給電部及び受電部は、図１６（ａ）（断面図）、図１６（ｂ）（斜視図）に示すように、一次側フェライトコア６１の周りに巻回された一次側コイル６２と、二次側フェライトコア６３の周りに巻回された二次側コイル６４とで構成され、また、一次側コイル６２と二次側コイル６４とが対向する側の反対側に、それぞれ、外部への磁界の漏洩を防止するアルミ板６５、６６を備えている。点線６７は磁束線を表している。
この給電部及び受電部は、水平方向の位置ずれや、垂直方向のギャップ長変動に対して許容量が大きい特質を有している。 FIG. 15 illustrates a power receiving unit of the non-contact power feeding device disclosed in Patent Document 2 below. In this power receiving unit, a plate-like core 213 is formed by combining a large number of rectangular plate-like blocks 212 made of ferrite, and a coil 222 wound flat on one surface of the plate-like core 213 is arranged.
FIG. 16 shows a power feeding unit and a power receiving unit developed by the inventors of the present invention.
As shown in FIG. 16A (cross-sectional view) and FIG. 16B (perspective view), the power feeding unit and the power receiving unit include a primary side coil 62 wound around a primary side ferrite core 61, and The secondary side coil 64 is wound around the secondary side ferrite core 63, and on the opposite side of the side where the primary side coil 62 and the secondary side coil 64 are opposed, Aluminum plates 65 and 66 for preventing leakage of the magnetic field are provided. A dotted line 67 represents a magnetic flux line.
The power feeding unit and the power receiving unit have characteristics that have a large tolerance with respect to a horizontal position shift and a vertical gap length variation.

また、本発明の発明者らは、下記特許文献３において、このフェライトコアを、図１７に示すように、複数枚の細長い板１４１で形成し、図１７（ａ）（平面図）、（ｂ）（側面図）に示すように、間隔を空けて細長い板１４１を配列した“すのこ型”コアにコイル１４２を巻回して給電部及び受電部を構成することを提案している。この場合、大型の一枚板のコアを必要としないため、製造コストの削減を図ることができる。
ところで、車体の床は鉄板で形成されているため、受電部周辺の漏れ磁束が鉄板に侵入した場合に、誘導電流が流れて鉄板が加熱され、給電効率が大幅に低下すると言う問題が生じる。 In addition, in the following Patent Document 3, the inventors of the present invention formed this ferrite core with a plurality of elongated plates 141 as shown in FIG. 17, and FIG. 17 (a) (plan view), (b) ) (Side view), it is proposed that a coil 142 is wound around a “snow-shaped” core in which elongated plates 141 are arranged at intervals to form a power feeding unit and a power receiving unit. In this case, since a large single-sheet core is not required, the manufacturing cost can be reduced.
By the way, since the floor of the vehicle body is formed of an iron plate, there arises a problem that when the leakage magnetic flux around the power receiving unit enters the iron plate, an induced current flows and the iron plate is heated and the power supply efficiency is greatly reduced.

下記特許文献４に記載されているように、漏れ磁束は、良導電性の金属板を用いて遮蔽することができる。この場合、金属板には、漏れ磁束によって渦電流が生じ、この渦電流による逆方向磁束が漏れ磁束に反発し、漏れ磁束の侵入が阻止される。
本発明者等は、非接触給電装置の漏れ磁束に対しても、良導電性の金属板による磁気遮蔽が有効でることを、アルミ板を用いて確かめている（下記非特許文献１）。 As described in Patent Document 4 below, the leakage magnetic flux can be shielded by using a highly conductive metal plate. In this case, an eddy current is generated in the metal plate due to the leakage magnetic flux, and the reverse magnetic flux due to the eddy current repels the leakage magnetic flux, thereby preventing the leakage magnetic flux from entering.
The present inventors have confirmed by using an aluminum plate that magnetic shielding by a highly conductive metal plate is effective against leakage magnetic flux of the non-contact power feeding device (Non-Patent Document 1 below).

特開２００８−８７７３３号公報JP 2008-87733 A 特開２００８−１２０２３９号公報JP 2008-120239 A 特願２００９−０１０９９７Japanese Patent Application No. 2009-010997 特開平１０−６４７４２号公報JP-A-10-64742

江原夏樹・岩田卓也・辻 俊明・金子裕良・阿部 茂・保田富夫：「漏れ磁束遮蔽アルミ板付き非接触給電の特性」, 平20 電学全大,No.4-196 (2008)Natsuki Ehara, Takuya Iwata, Toshiaki Tsuji, Hiroyoshi Kaneko, Shigeru Abe, Tomio Yasuda: "Characteristics of Contactless Power Supply with Leakage Flux Shielding Aluminum Plate", Hei 20 Denki University, No. 4-196 (2008)

従来の非接触給電装置を用いる車両給電システムの多くは、受電効率が変動しないように、車両の停止位置を機械的に規制して、給電部と受電部との位置ずれやギャップ長変化の範囲を厳しく制限している。
しかし、車両を決められた位置に正確に止めることは困難であり、それを強いるシステムは、一般人が利用し難い。
そのため、今後は、利便性の面から、給電部と受電部との位置ずれを許容するシステムが主流になるものと考えられる。
しかし、非接触給電装置の給電部と受電部との位置ずれの許容量を大きくすると、漏れ磁束が大きな問題となる。 Many conventional vehicle power feeding systems that use a non-contact power feeding device mechanically restrict the stop position of the vehicle so that the power receiving efficiency does not fluctuate, and the range of positional deviation and gap length change between the power feeding unit and the power receiving unit Is strictly limited.
However, it is difficult to accurately stop the vehicle at a predetermined position, and the system forcing it is difficult for ordinary people to use.
Therefore, in the future, from the viewpoint of convenience, it is considered that a system that allows a positional shift between the power feeding unit and the power receiving unit will become mainstream.
However, if the allowable amount of positional deviation between the power feeding unit and the power receiving unit of the non-contact power feeding device is increased, leakage magnetic flux becomes a big problem.

本発明は、こうした事情を考慮して創案したものであり、給電部と受電部との位置ずれによる漏れ磁束の影響が抑制できる非接触給電装置を提供することを目的としている。   The present invention has been made in view of such circumstances, and an object of the present invention is to provide a non-contact power feeding device that can suppress the influence of leakage magnetic flux due to the positional deviation between the power feeding unit and the power receiving unit.

本発明の非接触給電装置は、地上側が、１次側コイルを含む平板状の給電部と、前記給電部の１次側コイルに高周波交流を供給する交流電源とを備え、移動体が、前記給電部と略同一の外形を有する、２次側コイルを含む平板状の受電部と、前記受電部の２次側コイルに電気接続された負荷装置とを備え、前記２次側コイルが前記１次側コイルと対向するように移動体を停止させて地上側の前記交流電源から移動体の前記負荷装置への非接触給電が行われる非接触給電装置であって、前記受電部が、当該受電部からの漏洩磁束を遮蔽する２次側遮蔽板を介して前記移動体に固定され、前記２次側遮蔽板が、非磁性の良導電体から成り、その大きさが、前記地上側からの給電が許容される移動体停止範囲のいずれの位置に前記移動体が停止したときでも、前記給電部の略全域が前記２次側遮蔽板の下方に位置する寸法に設定されていることを特徴とする。
この非接触給電装置は、給電部と受電部との位置ずれの許容量が大きくても、漏れ磁束の車体への波及を防止できる。 The non-contact power feeding device of the present invention includes a flat plate-like power feeding unit including a primary side coil on the ground side, and an AC power source that supplies high-frequency AC to the primary side coil of the power feeding unit. A planar power receiving unit including a secondary coil having substantially the same outer shape as the power supply unit; and a load device electrically connected to the secondary coil of the power receiving unit, wherein the secondary coil is the first coil A non-contact power feeding device in which a moving body is stopped so as to face a secondary coil and non-contact power feeding is performed from the AC power supply on the ground side to the load device of the moving body, wherein the power receiving unit receives the power receiving Fixed to the moving body through a secondary shielding plate that shields leakage magnetic flux from the part, the secondary shielding plate is made of a non-magnetic good conductor, and its size is from the ground side The moving body stops at any position within the moving body stop range where power feeding is allowed In air, characterized in that substantially the entire area of the feeding part is set to a dimension that is located below the secondary shield.
This non-contact power feeding device can prevent the leakage magnetic flux from spreading to the vehicle body even if the allowable amount of positional deviation between the power feeding unit and the power receiving unit is large.

また、本発明の非接触給電装置では、前記給電部が、当該給電部からの漏洩磁束を遮蔽する１次側遮蔽板を介して地上に固定され、前記１次側遮蔽板が、非磁性の良導電体から成り、その大きさが、前記移動体停止範囲のいずれの位置に前記移動体が停止したときでも、前記受電部の略全域が前記１次側遮蔽板の上方に位置する寸法に設定されていることが望ましい。
この非接触給電装置は、給電部と受電部との位置ずれの許容量が大きくても、漏れ磁束の地上側への波及を防止できる。 Further, in the non-contact power feeding device of the present invention, the power feeding unit is fixed to the ground via a primary side shielding plate that shields leakage magnetic flux from the power feeding unit, and the primary side shielding plate is nonmagnetic. It is made of a good conductor, and its size is such that when the moving body stops at any position in the moving body stop range, the substantially entire area of the power receiving unit is positioned above the primary shielding plate. It is desirable that it is set.
This non-contact power feeding device can prevent the leakage magnetic flux from spreading to the ground side even if the allowable amount of displacement between the power feeding unit and the power receiving unit is large.

また、本発明の非接触給電装置では、前記給電部が前記１次側コイルと磁性体コアを構成する１次側磁性体板とから成り、前記受電部が前記２次側コイルと磁性体コアを構成する２次側磁性体板とから成る。   Further, in the non-contact power feeding device according to the present invention, the power feeding unit includes the primary side coil and a primary side magnetic body plate constituting the magnetic core, and the power receiving unit includes the secondary side coil and the magnetic core. And a secondary side magnetic material plate.

また、本発明の非接触給電装置は、前記１次側コイルが前記１次側磁性体板（磁性体コア）に巻回され、前記２次側コイルが前記２次側磁性体板（磁性体コア）に巻回されていることが望ましい。
この非接触給電装置の給電部及び受電部は、位置ずれの許容量が大きい。 In the non-contact power feeding device according to the present invention, the primary coil is wound around the primary magnetic plate (magnetic core), and the secondary coil is the secondary magnetic plate (magnetic material). It is desirable to be wound around the core.
The power feeding unit and the power receiving unit of this non-contact power feeding apparatus have a large allowable amount of displacement.

また、本発明の非接触給電装置では、前記移動体の進行方向をｘ方向、それに垂直で前記給電部の前記受電部に対向する面に平行な方向をｙ方向とするｘｙ平面上で、前記給電部の中心位置Ｃ1を原点（０，０）、前記受電部の中心位置Ｃ2を（ｘ2、ｙ2）として、前記移動体停止範囲が、−ｘm＜ｘ2＜ｘm且つ−ｙm＜ｙ2＜ｙmと設定される場合に、給電部外形に対し寸法をｘ方向及び−ｘ方向にそれぞれｘmだけ拡大し、ｙ方向及び−ｙ方向にそれぞれｙmだけ拡大した図形を拡大給電部外形と定義したとき、前記２次側遮蔽板の外形寸法は、受電部外形と拡大給電部外形とを中心位置（Ｃ1とＣ2）を一致させて重ねた図形の外形（和領域）より大きい寸法に設定する。
例えば、前記給電部の外形寸法と前記受電部の外形寸法が同じであれば、前記２次側遮蔽板の大きさが、少なくとも、ｘ方向及び−ｘ方向のそれぞれで前記受電部の外形寸法よりｘmだけ大きく、ｙ方向及び−ｙ方向のそれぞれで前記受電部の外形寸法よりｙmだけ大きくなるように寸法を設定し、
また、例えば、ｘ方向の前記給電部の外形寸法が同方向の前記受電部の外形寸法よりＬx1だけ大きく、ｙ方向の前記給電部の外形寸法が同方向の前記受電部の外形寸法よりＬy1だけ大きければ、前記２次側遮蔽板の大きさが、少なくとも、ｘ方向及び−ｘ方向のそれぞれで前記受電部の外形寸法より（ｘm＋Ｌx1／２）だけ大きく、ｙ方向及び−ｙ方向のそれぞれで前記受電部の外形寸法より（ｙm＋Ｌy1／２）だけ大きくなるように寸法を設定する。
この非接触給電装置では、給電が許容される移動体停止範囲の何処に車両が停止したときでも、給電部の全域が２次側遮蔽板の下方に位置することになり、漏れ磁束の車体への波及が防止できる。 Further, in the non-contact power feeding device of the present invention, on the xy plane, the traveling direction of the moving body is the x direction, and the direction parallel to the surface facing the power receiving unit of the power feeding unit is perpendicular to the x direction. With the center position C 1 of the power feeding unit as the origin (0, 0) and the center position C 2 of the power receiving unit as (x 2 , y 2 ), the moving body stop range is −x m <x 2 <x m and If it is set to -y m <y 2 <y m, a dimension with respect to the feeding section outline enlarged by each x m in the x direction and the -x direction, respectively in the y direction and the -y direction has been enlarged by y m When a figure is defined as an enlarged power supply part outline, the external dimensions of the secondary shielding plate are the outline of the figure formed by superimposing the power receiving part outline and the enlarged power supply part outline with their center positions (C 1 and C 2 ) matched. Set to a larger dimension (sum area).
For example, if the outer dimensions of the power feeding unit and the power receiving unit are the same, the size of the secondary shielding plate is at least as large as the outer dimension of the power receiving unit in each of the x direction and the −x direction. larger by x m, and set the size so that only larger y m than the outer dimensions of the power receiving unit in each y direction and -y direction,
Further, for example, the outer dimension of the power feeding unit in the x direction is larger by L x1 than the outer dimension of the power receiving unit in the same direction, and the outer dimension of the power feeding unit in the y direction is L smaller than the outer dimension of the power receiving unit in the same direction. If it is larger by y1, the size of the secondary shielding plate is at least (x m + L x1 / 2) larger than the outer dimensions of the power receiving unit in each of the x direction and the −x direction. The dimensions are set so as to be larger by (y m + L y1 / 2) than the outer dimensions of the power receiving unit in each direction.
In this non-contact power supply device, the entire area of the power supply unit is located below the secondary shielding plate when the vehicle stops anywhere in the movable body stop range where power supply is allowed. Can be prevented.

また、本発明の非接触給電装置では、前記移動体の進行方向をｘ方向、それに垂直で前記給電部の前記受電部に対向する面に平行な方向をｙ方向とするｘｙ平面上で、前記給電部の中心位置Ｃ1を原点（０，０）、前記受電部の中心位置Ｃ2を（ｘ2、ｙ2）として、前記移動体停止範囲が、−ｘm＜ｘ2＜ｘm且つ−ｙm＜ｙ2＜ｙmと設定される場合に、受電部外形に対し寸法をｘ方向及び−ｘ方向にそれぞれｘmだけ拡大し、ｙ方向及び−ｙ方向にそれぞれｙmだけ拡大した図形を拡大受電部外形と定義したとき、前記１次側遮蔽板の外形寸法は、給電部外形と拡大受電部外形とを中心位置（Ｃ1とＣ2）を一致させて重ねた図形の外形（和領域）より大きい寸法に設定する。
例えば、前記給電部の外形寸法と前記受電部の外形寸法が同じであれば、前記１次側遮蔽板の大きさが、少なくとも、ｘ方向及び−ｘ方向のそれぞれで前記給電部の外形寸法よりｘmだけ大きく、ｙ方向及び−ｙ方向のそれぞれで前記給電部の外形寸法よりｙmだけ大きくなるように寸法を設定し、
また、例えば、ｘ方向の前記受電部の外形寸法が同方向の前記給電部の外形寸法よりＬx2だけ大きく、ｙ方向の前記受電部の外形寸法が同方向の前記給電部の外形寸法よりＬy2だけ大きければ、前記１次側遮蔽板の大きさが、少なくとも、ｘ方向及び−ｘ方向のそれぞれで前記給電部の外形寸法より（ｘm＋Ｌx2／２）だけ大きく、ｙ方向及び−ｙ方向のそれぞれで前記給電部の外形寸法より（ｙm＋Ｌy2／２）だけ大きくなるように寸法を設定する。
この非接触給電装置では、給電が許容される移動体停止範囲の何処に車両が停止したときでも、受電部の全域が１次側遮蔽板の上方に位置することになり、漏れ磁束の地上側への波及が防止できる。 Further, in the non-contact power feeding device of the present invention, on the xy plane, the traveling direction of the moving body is the x direction, and the direction parallel to the surface facing the power receiving unit of the power feeding unit is perpendicular to the x direction. With the center position C 1 of the power feeding unit as the origin (0, 0) and the center position C 2 of the power receiving unit as (x 2 , y 2 ), the moving body stop range is −x m <x 2 <x m and If it is set to -y m <y 2 <y m, respectively the dimensions in the x direction and the -x direction with respect to the power receiving unit external enlarged by x m, respectively in the y direction and -y direction is magnified by y m When a figure is defined as an enlarged power receiving part outer shape, the outer dimension of the primary shielding plate is the outer shape of the figure in which the power feeding part outer shape and the enlarged power receiving part outer shape are aligned at the center position (C 1 and C 2 ). Set to a larger dimension (sum area).
For example, if the outer dimensions of the power feeding unit and the power receiving unit are the same, the size of the primary shielding plate is at least as large as the outer dimension of the power feeding unit in each of the x direction and the −x direction. larger by x m, and set the size so that only larger y m than the outer dimension of the feeding portion in the respective y-direction and -y direction,
Further, for example, the outer dimension of the power receiving unit in the x direction is larger by L x2 than the outer dimension of the power feeding unit in the same direction, and the outer dimension of the power receiving unit in the y direction is L smaller than the outer dimension of the power feeding unit in the same direction. If it is larger by y2, the size of the primary side shielding plate is at least larger than the outer dimension of the power feeding part in each of the x direction and the −x direction by (x m + L x2 / 2). The dimensions are set so as to be larger by (y m + L y2 / 2) than the outer dimensions of the power feeding part in each direction.
In this non-contact power feeding device, the entire area of the power receiving unit is located above the primary shielding plate when the vehicle stops anywhere in the movable body stopping range where power feeding is allowed, and the leakage flux on the ground side Can be prevented.

また、本発明の非接触給電装置は、前記遮蔽板にアルミ板を用いることが望ましい。   In the non-contact power feeding device of the present invention, it is desirable to use an aluminum plate for the shielding plate.

本発明の非接触給電装置は、給電部と受電部との位置ずれが発生しても、漏れ磁束が車体にまで達しない。そのため、車体の加熱や、給電効率の低下が回避できる。   In the non-contact power feeding device of the present invention, even if the power feeding unit and the power receiving unit are misaligned, the leakage magnetic flux does not reach the vehicle body. Therefore, heating of the vehicle body and a decrease in power supply efficiency can be avoided.

本発明の実施形態に係る非接触給電装置の構成を示す図The figure which shows the structure of the non-contact electric power feeder which concerns on embodiment of this invention. 地上側の給電部と進行する車両の受電部との位置関係を示す図The figure which shows the positional relationship of the electric power feeding part on the ground side and the power receiving part of the vehicle which advances 給電部と受電部との座標上の関係を示す図The figure which shows the relationship on the coordinate of a power feeding part and a power receiving part 車両停止範囲の境界上の受電部と給電部との位置関係を示す図（その１）The figure which shows the positional relationship of the power receiving part and electric power feeding part on the boundary of a vehicle stop range (the 1) 車両停止範囲の境界上の受電部と給電部との位置関係を示す図（その２）The figure which shows the positional relationship of the power receiving part and electric power feeding part on the boundary of a vehicle stop range (the 2) 車両停止範囲の境界上の受電部と給電部との位置関係を示す図（その３）The figure which shows the positional relationship of the power receiving part and electric power feeding part on the boundary of a vehicle stop range (the 3) 車両停止範囲の境界上の受電部と給電部との位置関係を示す図（その４）The figure which shows the positional relationship of the power receiving part and electric power feeding part on the boundary of a vehicle stop range (the 4) 受電部と給電部の大きさが同じときの受電部とアルミ板との関係を示す平面図The top view which shows the relationship between a power receiving part and an aluminum plate when the magnitude | size of a power receiving part and a power feeding part is the same 受電部と給電部の大きさが同じときの受電部とアルミ板と給電部との関係を示す断面図Sectional drawing which shows the relationship between a power receiving part, an aluminum plate, and a power feeding part when the sizes of the power receiving part and the power feeding part are the same 受電部と給電部との大きさが異なるときの関係を示す断面図Sectional drawing which shows the relationship when the magnitude | size of a receiving part and a electric power feeding part differs 円形の受電部とアルミ板との関係を示す平面図（受電部と給電部の大きさが同じとき）Plan view showing the relationship between a circular power receiving unit and an aluminum plate (when the size of the power receiving unit and the power feeding unit is the same) 長円形の受電部とアルミ板との関係を示す平面図（受電部と給電部の大きさが同じとき）Plan view showing the relationship between an oval power receiving unit and an aluminum plate (when the power receiving unit and the power supply unit are the same size) プラグインハイブリッド車の給電システムを示す図Diagram showing power supply system for plug-in hybrid vehicle 円形の受電部を示す図Diagram showing a circular power receiving unit 長円形の受電部を示す図Diagram showing an ellipse power receiving unit コアにコイルを巻回した給電部及び受電部形を示す図The figure which shows the electric power feeding part and power receiving part shape which wound the coil around the core すのこ型のコアを用いた受電部を示す図The figure which shows the electric power reception part which uses the sunk core

図１は、本発明の実施形態に係る非接触給電装置を模式的に示している。
この装置は、プラグインハイブリッド車４０の給電システムに用いられており、エンジン４７とともにモータ４６を駆動源として搭載する車両４０は、モータ４６用の電源である二次電池４４と、二次電池４４の直流を交流に変換してモータ４６に供給するインバータ４５と、二次電池４４の充電回路４３と、受電側アルミ板４１を介して車体の床面の外側に固定された受電部４２とを有している。
一方、給電ステーション側（地上側）は、商用周波数の交流電源５０と、この交流が直流に変換され、この直流から、さらに高周波交流を生成するインバータ５１と、給電側アルミ板５２を介して給電ステーションに固定された給電部５３とを備えている。
ここでは、図２に示すように、給電部５３及び受電部４２として、フェライト板４８、５４にコイル４９、５５を巻回した、図１６の形態のものを用いている。この給電部５３と受電部４２とは同一形状である。 FIG. 1 schematically shows a non-contact power feeding apparatus according to an embodiment of the present invention.
This device is used in a power supply system for a plug-in hybrid vehicle 40. A vehicle 40 mounted with a motor 46 as a drive source together with an engine 47 includes a secondary battery 44 as a power source for the motor 46, and a secondary battery 44. An inverter 45 that converts the direct current into alternating current and supplies it to the motor 46, a charging circuit 43 for the secondary battery 44, and a power receiving unit 42 fixed to the outside of the floor of the vehicle body via the power receiving side aluminum plate 41. Have.
On the other hand, the power supply station side (ground side) supplies power via an AC power supply 50 of commercial frequency, this AC is converted to DC, an inverter 51 that generates high-frequency AC from this DC, and an aluminum plate 52 on the power supply side. And a power feeding unit 53 fixed to the station.
Here, as shown in FIG. 2, as the power feeding unit 53 and the power receiving unit 42, those in the form of FIG. 16 in which coils 49 and 55 are wound around ferrite plates 48 and 54 are used. The power feeding unit 53 and the power receiving unit 42 have the same shape.

車両の進行方向をｘ方向とし、ｘ方向に直交し、給電部５３及び受電部４２の対向面に平行な方向をｙ方向とすると、コイル４９、５５は、ｙ方向に巻回されている。この給電部５３及び受電部４２は、それらが対向するとき、図１６に示すように、コイルに覆われていないフェライト板の露出部分で磁束線に鎖交する。そのため、給電を行うためには、給電部５３のフェライト露出部分と受電部４２のフェライト露出部分との対向面積が所定量以上存在しなければならない。   If the traveling direction of the vehicle is the x direction, the direction orthogonal to the x direction and the direction parallel to the facing surfaces of the power feeding unit 53 and the power receiving unit 42 is the y direction, the coils 49 and 55 are wound in the y direction. When the power feeding unit 53 and the power receiving unit 42 face each other, as shown in FIG. 16, the power feeding unit 53 and the power receiving unit 42 are linked to the magnetic flux lines at the exposed portion of the ferrite plate not covered with the coil. Therefore, in order to perform power feeding, the facing area between the ferrite exposed portion of the power feeding portion 53 and the ferrite exposed portion of the power receiving portion 42 must be a predetermined amount or more.

図３に示すように、給電部５３の中心Ｃ1を原点（０，０）とするｘｙ座標を想定し、受電部４２の中心Ｃ2の座標位置を（ｘ2、ｙ2）とする。このとき、受電部４２の中心Ｃ2（ｘ2、ｙ2）が四角５６で示す範囲内にあれば、給電部５３及び受電部４２のフェライト露出部分の対向面積が所定量以上に達し、給電が可能になる。従って、給電を受けるためには、受電部４２の中心Ｃ2が、この四角５６の中に入るように車両を停止させる必要がある。そのため、この四角５６を車両停止範囲と呼ぶことにする。
車両停止範囲５６は、（ｘm、ｙm）（−ｘm、ｙm）（−ｘm、−ｙm）（ｘm、−ｙm）の４点で囲まれた範囲である。車両停止範囲５６と受電部４２の中心Ｃ2（ｘ2、ｙ2）との関係は、
−ｘm＜ｘ2＜ｘm 且つ −ｙm＜ｙ2＜ｙm
と表すことができる。 As shown in FIG. 3, an xy coordinate having the center C 1 of the power feeding unit 53 as the origin (0, 0) is assumed, and the coordinate position of the center C 2 of the power receiving unit 42 is defined as (x 2 , y 2 ). At this time, if the center C 2 (x 2 , y 2 ) of the power receiving unit 42 is within the range indicated by the square 56, the opposing area of the exposed portions of the power feeding unit 53 and the power receiving unit 42 reaches a predetermined amount or more. Is possible. Therefore, in order to receive power supply, it is necessary to stop the vehicle so that the center C 2 of the power receiving unit 42 enters the square 56. Therefore, this square 56 will be referred to as a vehicle stop range.
Vehicle stop range 56, (x m, y m) is a range surrounded by four points - - (x m, -y m ) (x m, -y m) (x m, y m). The relationship between the vehicle stop range 56 and the center C 2 (x 2 , y 2 ) of the power receiving unit 42 is as follows:
-X m <x 2 <x m and -y m <y 2 <y m
It can be expressed as.

図４は、受電部４２の中心Ｃ2（ｘ2、ｙ2）が車両停止範囲５６の（ｘm、ｙm）の位置にある状態を示している。
図５は、受電部４２の中心Ｃ2（ｘ2、ｙ2）が車両停止範囲５６の（−ｘm、ｙm）の位置にある状態を示している。
図６は、受電部４２の中心Ｃ2（ｘ2、ｙ2）が車両停止範囲５６の（−ｘm、−ｙm）の位置にある状態を示している。
図７は、受電部４２の中心Ｃ2（ｘ2、ｙ2）が車両停止範囲５６の（ｘm、−ｙm）の位置にある状態を示している。 FIG. 4 shows a state where the center C 2 (x 2 , y 2 ) of the power receiving unit 42 is at the position (x m , y m ) of the vehicle stop range 56.
FIG. 5 shows a state where the center C 2 (x 2 , y 2 ) of the power receiving unit 42 is at the position (−x m , y m ) of the vehicle stop range 56.
FIG. 6 shows a state where the center C 2 (x 2 , y 2 ) of the power receiving unit 42 is at the position (−x m , −y m ) of the vehicle stop range 56.
FIG. 7 shows a state where the center C 2 (x 2 , y 2 ) of the power receiving unit 42 is at the position (x m , −y m ) of the vehicle stop range 56.

このように、車両停止範囲５６は、車両進行方向に狭く、それと直角な車幅方向には広い。車両進行方向は、例えば、車止めを配置して車両停止位置を規制すれば、運転者は、容易に規定された車両停止位置に止めることができる。一方、車幅方向の停車位置をピンポイントで合わせることは難しいが、この非接触給電装置の車両停止範囲５６は、車幅方向に十分な余裕があるため、その範囲内に止めることは難しくない。
受電側アルミ板４１は、受電部４２の中心Ｃ2（ｘ2、ｙ2）が、車両停止範囲５６内の何処に移動しても、給電部５３の全域が受電側アルミ板４１の下方に位置するように、その寸法が設定される。
従って、受電側アルミ板４１の寸法は、図４から、−ｘ方向に受電部４２よりｘm以上大きく、且つ、−ｙ方向に受電部４２よりｙm以上大きく設定され、また、図６から、ｘ方向に受電部４２よりｘm以上大きく、且つ、ｙ方向に受電部４２よりｙm以上大きく設定される。 Thus, the vehicle stop range 56 is narrow in the vehicle traveling direction and wide in the vehicle width direction perpendicular thereto. In the vehicle traveling direction, for example, if a vehicle stop is arranged to restrict the vehicle stop position, the driver can easily stop at the specified vehicle stop position. On the other hand, although it is difficult to pinpoint the stop position in the vehicle width direction, the vehicle stop range 56 of this non-contact power feeding device has a sufficient margin in the vehicle width direction, so it is not difficult to stop within that range. .
In the power receiving side aluminum plate 41, the entire region of the power feeding unit 53 is located below the power receiving side aluminum plate 41 regardless of where the center C 2 (x 2 , y 2 ) of the power receiving unit 42 moves within the vehicle stop range 56. Its dimensions are set so that it is located.
Thus, the dimensions of the power-receiving-side aluminum plate 41 from FIG. 4, or x m from the power receiving unit 42 in the -x direction increases, and is larger than the power receiving unit 42 or y m in the -y direction, from FIG. 6 , X m or more larger than the power receiving unit 42 in the x direction and y m or larger than the power receiving unit 42 in the y direction.

図８に、受電部４２と受電側アルミ板４１との関係を平面図で示し、また、図９（ａ）にｙ軸での断面図を、図９（ｂ）にｘ軸での断面図を示している。このように、受電側アルミ板４１の寸法は、少なくとも、ｘ方向及び−ｘ方向のそれぞれで受電部４２の外形寸法よりｘm大きく、ｙ方向及び−ｙ方向のそれぞれで受電部４２の外形寸法よりｙm大きくなるように設定すれば、受電部４２の中心Ｃ2が、車両停止範囲５６内の何処に移動しても、給電部５３の全域が受電側アルミ板４１の下方に位置することになる。
なお、受電部４２と給電部５３とは同一形状としているため、給電側アルミ板５２の大きさ、及び、給電部５３との大きさの関係は、受電側アルミ板４１及び受電部４２と同様である。 FIG. 8 is a plan view showing the relationship between the power receiving unit 42 and the power receiving side aluminum plate 41, FIG. 9A is a cross-sectional view along the y-axis, and FIG. 9B is a cross-sectional view along the x-axis. Is shown. Thus, the dimensions of the power receiving side aluminum plate 41 are at least x m larger than the outer dimensions of the power receiving section 42 in each of the x and −x directions, and the outer dimensions of the power receiving section 42 in each of the y and −y directions. be set so more y m increases, the center C 2 of the power receiving unit 42, also move anywhere in the vehicle stop range 56, the whole area of the feeding portion 53 is positioned below the power receiving side aluminum plate 41 become.
Since the power reception unit 42 and the power supply unit 53 have the same shape, the relationship between the size of the power supply side aluminum plate 52 and the size of the power supply unit 53 is the same as that of the power reception side aluminum plate 41 and the power reception unit 42. It is.

また、受電部４２と給電部５３との大きさが異なる場合は、図１０に示すように、ｙ軸での断面図で見ると、給電部５３が受電部４２よりＬy2だけ長いとき、受電部４２の両側にＬy2／２ずつ加えた寸法が給電部５３と同じ長さとなる。従って、受電部４２の両側にＬy2／２ずつ加えた寸法に、さらに、ｙmを加えてやれば、良いことが分かる。
即ち、ｘ方向の給電部５３の外形寸法が同方向の受電部４２の外形寸法よりＬx1だけ大きく、ｙ方向の給電部５３の外形寸法が同方向の受電部４２の外形寸法よりＬy1だけ大きければ、受電側アルミ板４１の大きさは、少なくとも、ｘ方向及び−ｘ方向のそれぞれで受電部４２の外形寸法より（ｘm＋Ｌx1／２）だけ大きく、ｙ方向及び−ｙ方向のそれぞれで受電部４２の外形寸法より（ｙm＋Ｌy1／２）だけ大きくなるように設定すれば良い。
換言すれば、給電部外形に対し寸法をｘ方向及び−ｘ方向にそれぞれｘmだけ拡大し、ｙ方向及び−ｙ方向にそれぞれｙmだけ拡大した図形を拡大給電部外形と定義したとき、受電側アルミ板４１の外形寸法は、受電部外形と拡大給電部外形とを中心位置（Ｃ1とＣ2）を一致させて重ねた図形の外形（和領域）より大きい寸法に設定する。 Further, when the power receiving unit 42 and the power feeding unit 53 are different in size, as shown in FIG. 10, when the power feeding unit 53 is longer than the power receiving unit 42 by L y2 , The dimension obtained by adding L y2 / 2 on both sides of the part 42 is the same length as the power feeding part 53. Therefore, the dimensions added in L y2 / 2 on both sides of the power receiving portion 42, further, do it by adding y m, can be seen better.
That is, the outer dimension of the power feeding part 53 in the x direction is larger by L x1 than the outer dimension of the power receiving part 42 in the same direction, and the outer dimension of the power feeding part 53 in the y direction is only L y1 than the outer dimension of the power receiving part 42 in the same direction. If it is larger, the size of the power receiving side aluminum plate 41 is at least (x m + L x1 / 2) larger than the outer dimensions of the power receiving unit 42 in each of the x direction and the −x direction, and each of the y direction and the −y direction. Therefore, it may be set so as to be larger by (y m + L y1 / 2) than the outer dimension of the power receiving unit 42.
In other words, when the dimension to the feeding portion outer enlarged by each x m in the x direction and the -x direction, is defined as y direction and respectively in the -y direction by y m enlarged enlarged feeding section profile shapes, receiving The outer dimension of the side aluminum plate 41 is set to be larger than the outer shape (sum area) of the figure in which the power receiving unit outer shape and the enlarged power feeding unit outer shape are overlapped with the center positions (C 1 and C 2 ) matched.

この関係は、給電部５３が受電部４２の大きさより小さいときの給電側アルミ板５２の寸法についても同じである。
即ち、ｘ方向の受電部４２の外形寸法が同方向の給電部５３の外形寸法よりＬx1だけ大きく、ｙ方向の受電部４２の外形寸法が同方向の給電部５３の外形寸法よりＬy1だけ大きければ、給電側アルミ板５２の大きさは、少なくとも、ｘ方向及び−ｘ方向のそれぞれで給電部５３の外形寸法より（ｘm＋Ｌx1／２）だけ大きく、ｙ方向及び−ｙ方向のそれぞれで給電部５３の外形寸法より（ｙm＋Ｌy1／２）だけ大きくなるように設定する。
このようにすれば、受電部４２の中心Ｃ2が、車両停止範囲５６内の何処に移動しても、受電部４２の全域が給電側アルミ板５２の上方に位置することになる。
換言すれば、受電部外形に対し寸法をｘ方向及び−ｘ方向にそれぞれｘmだけ拡大し、ｙ方向及び−ｙ方向にそれぞれｙmだけ拡大した図形を拡大受電部外形と定義したとき、給電側アルミ板５２の外形寸法は、給電部外形と拡大受電部外形とを中心位置（Ｃ1とＣ2）を一致させて重ねた図形の外形（和領域）より大きい寸法に設定する。 This relationship also applies to the dimensions of the power supply side aluminum plate 52 when the power supply unit 53 is smaller than the size of the power reception unit 42.
That is, the outer dimension of the power receiving unit 42 in the x direction is larger by L x1 than the outer dimension of the power feeding unit 53 in the same direction, and the outer dimension of the power receiving unit 42 in the y direction is L y1 more than the outer dimension of the power feeding unit 53 in the same direction. greater if the size of the feeding-side aluminum plate 52 is at least greater than the outer dimensions of the power supply unit 53 in each of the x direction and the -x direction by (x m + L x1 / 2 ), each of y and -y directions Thus, it is set so as to be larger than the outer dimension of the power feeding portion 53 by (y m + L y1 / 2).
In this way, regardless of where the center C 2 of the power reception unit 42 moves within the vehicle stop range 56, the entire region of the power reception unit 42 is located above the power supply side aluminum plate 52.
In other words, when the figure is enlarged with respect to the outer shape of the power receiving unit by x m in the x direction and the −x direction, respectively, and the figure enlarged by y m in the y direction and the −y direction is defined as the enlarged power receiving unit outer shape. The outer dimension of the side aluminum plate 52 is set to be larger than the outer shape (sum area) of the figure in which the power supply unit outer shape and the enlarged power receiving unit outer shape are overlapped with the center positions (C 1 and C 2 ) matched.

ここでは、給電部５３及び受電部４２が矩形の外形形状を有する場合の給電側、受電側アルミ板４１、５２について説明したが、図１１に示すように、給電部５３及び受電部４２が円形の外形形状を有する場合でも、また、図１２に示すように、給電部５３及び受電部４２が長円形の外形形状を有する場合でも同様である。
また、ここでは、アルミ板を漏洩磁束の遮蔽板として用いる場合について説明したが、銅や銀など、その他の非磁性の良導電体を用いることも可能である。 Here, the power feeding side and the power receiving side aluminum plates 41 and 52 in the case where the power feeding unit 53 and the power receiving unit 42 have a rectangular outer shape have been described. However, as shown in FIG. 11, the power feeding unit 53 and the power receiving unit 42 are circular. This is the same even when the outer shape of the power supply unit 53 and the power receiving unit 42 have an oval outer shape as shown in FIG.
Although the case where the aluminum plate is used as a leakage flux shielding plate has been described here, other non-magnetic good conductors such as copper and silver can also be used.

本発明は、給電部及び受電部の位置ずれの許容量が大きい非接触給電装置を実現するものであり、電気自動車、プラグインハイブリッド車、工場内搬送車、移動ロボット、電車など、各種の移動体の非接触給電に広く利用することができる。   The present invention realizes a non-contact power feeding device with a large allowable displacement of a power feeding unit and a power receiving unit, and various types of movement such as an electric vehicle, a plug-in hybrid vehicle, a factory transport vehicle, a mobile robot, and a train It can be widely used for non-contact power feeding of the body.

４０ プラグインハイブリッド車
４１ 受電側アルミ板
４２ 受電部
４３ 充電回路
４４ 二次電池
４５ インバータ
４６ モータ
４７ エンジン
４８ フェライト板
４９ コイル
５０ 交流電源
５１ インバータ
５２ 給電側アルミ板
５３ 給電部
５４ フェライト板
５５ コイル
６１ 一次側フェライトコア
６２ 一次側コイル
６３ 二次側フェライトコア
６４ 二次側コイル
６５ アルミ板
６６ アルミ板
１００ 車両
１０２ 二次コイル
１０３ 充電回路
１０４ 二次電池
１０５ インバータ
１０６ モータ
１０７ エンジン
１４１ 細長い板
１４２ すのこ型コア
２００ 交流電源
２０１ インバータ
２０２ １次コイル
２１２ 板状ブロック
２１３ 板状コア
２２２ コイル DESCRIPTION OF SYMBOLS 40 Plug-in hybrid vehicle 41 Power receiving side aluminum plate 42 Power receiving part 43 Charging circuit 44 Secondary battery 45 Inverter 46 Motor 47 Engine 48 Ferrite plate 49 Coil 50 AC power supply 51 Inverter 52 Power feeding side aluminum plate 53 Power feeding part 54 Ferrite plate 55 Coil 61 Primary side ferrite core 62 Primary side coil 63 Secondary side ferrite core 64 Secondary side coil 65 Aluminum plate 66 Aluminum plate 100 Vehicle 102 Secondary coil 103 Charging circuit 104 Secondary battery 105 Inverter 106 Motor 107 Engine 141 Elongated plate 142 Snowboard type Core 200 AC power supply 201 Inverter 202 Primary coil 212 Plate block 213 Plate core 222 Coil

Claims (7)

地上側が、１次側コイルを含む平板状の給電部と、前記給電部の１次側コイルに高周波交流を供給する交流電源とを備え、移動体が、前記給電部と略同一の外形を有する、２次側コイルを含む平板状の受電部と、前記受電部の２次側コイルに電気接続された負荷装置とを備え、前記２次側コイルが前記１次側コイルと対向するように移動体を停止させて地上側の前記交流電源から移動体の前記負荷装置への非接触給電が行われる非接触給電装置であって、
前記受電部が、当該受電部からの漏洩磁束を遮蔽する２次側遮蔽板を介して前記移動体に固定され、
前記２次側遮蔽板が、非磁性の良導電体から成り、その大きさが、前記地上側からの給電が許容される移動体停止範囲のいずれの位置に前記移動体が停止したときでも、前記給電部の略全域が前記２次側遮蔽板の下方に位置する寸法に設定されていることを特徴とする非接触給電装置。 The ground side includes a flat plate-like power supply unit including a primary side coil, and an AC power source that supplies high-frequency AC to the primary side coil of the power supply unit, and the moving body has substantially the same outer shape as the power supply unit. A flat power receiving unit including a secondary side coil and a load device electrically connected to the secondary side coil of the power receiving unit, the secondary side coil moving so as to face the primary side coil A non-contact power feeding device in which a body is stopped and non-contact power feeding is performed from the AC power supply on the ground side to the load device of a moving body,
The power receiving unit is fixed to the moving body via a secondary shielding plate that shields leakage magnetic flux from the power receiving unit;
The secondary-side shielding plate is made of a non-magnetic good conductor, and the size of the secondary-side shielding plate is not limited to any position in the movable body stopping range where power supply from the ground side is allowed. A non-contact power feeding device, wherein a substantially entire area of the power feeding unit is set to a dimension located below the secondary shielding plate. 請求項１に記載の非接触給電装置であって、前記給電部が、当該給電部からの漏洩磁束を遮蔽する１次側遮蔽板を介して地上に固定され、前記１次側遮蔽板が、非磁性の良導電体から成り、その大きさが、前記移動体停止範囲のいずれの位置に前記移動体が停止したときでも、前記受電部の略全域が前記１次側遮蔽板の上方に位置する寸法に設定されていることを特徴とする非接触給電装置。   The contactless power supply device according to claim 1, wherein the power feeding unit is fixed to the ground via a primary shielding plate that shields leakage magnetic flux from the power feeding unit, and the primary shielding plate is It consists of a non-magnetic good conductor, and its size is such that when the moving body stops at any position in the moving body stopping range, the substantially entire area of the power receiving unit is positioned above the primary shielding plate. The non-contact electric power feeder characterized by being set to the dimension to carry out. 請求項１または２に記載の非接触給電装置であって、前記給電部が前記１次側コイルと磁性体コアを構成する１次側磁性体板とから成り、前記受電部が前記２次側コイルと磁性体コアを構成する２次側磁性体板とから成ることを特徴とする非接触給電装置。   3. The non-contact power feeding device according to claim 1, wherein the power feeding unit includes the primary side coil and a primary magnetic body plate constituting a magnetic core, and the power receiving unit is the secondary side. A non-contact power feeding device comprising a coil and a secondary magnetic plate constituting a magnetic core. 請求項３に記載の非接触給電装置であって、前記１次側コイルが前記１次側磁性体板に巻回され、前記２次側コイルが前記２次側磁性体板に巻回されていることを特徴とする非接触給電装置。   The contactless power supply device according to claim 3, wherein the primary side coil is wound around the primary side magnetic body plate, and the secondary side coil is wound around the secondary side magnetic body plate. A non-contact power feeding device characterized by comprising: 請求項１から４のいずれかに記載の非接触給電装置であって、前記移動体の進行方向をｘ方向、それに垂直で前記給電部の前記受電部に対向する面に平行な方向をｙ方向とするｘｙ平面上で、前記給電部の中心位置Ｃ1を原点（０，０）、前記受電部の中心位置Ｃ2を（ｘ2、ｙ2）として、前記移動体停止範囲が、−ｘm＜ｘ2＜ｘm且つ−ｙm＜ｙ2＜ｙmと設定され、
給電部外形に対し寸法をｘ方向及び−ｘ方向にそれぞれｘmだけ拡大し、ｙ方向及び−ｙ方向にそれぞれｙmだけ拡大した図形を拡大給電部外形と定義したとき、前記２次側遮蔽板の外形寸法は、受電部外形と拡大給電部外形とを中心位置（Ｃ1とＣ2）を一致させて重ねた図形の外形（和領域）より大きな寸法に設定されることを特徴とする非接触給電装置。 5. The non-contact power feeding device according to claim 1, wherein the traveling direction of the moving body is an x direction, and a direction perpendicular to the surface and facing the power receiving unit of the power feeding unit is a y direction. On the xy plane, where the center position C 1 of the power feeding unit is the origin (0, 0) and the center position C 2 of the power receiving unit is (x 2 , y 2 ), the moving body stop range is −x m <x 2 <x m and is set to -y m <y 2 <y m ,
When the dimensions of the power supply part outline are enlarged by x m in the x direction and the −x direction, respectively, and the figure enlarged by y m in the y direction and the −y direction is defined as the enlarged power supply part outline, the secondary side shielding is performed. The outer dimension of the plate is set to be larger than the outer shape (sum area) of the figure in which the power receiving unit outer shape and the enlarged power feeding unit outer shape are overlapped with the center positions (C 1 and C 2 ) matched. Non-contact power feeding device. 請求項２から４のいずれかに記載の非接触給電装置であって、前記移動体の進行方向をｘ方向、それに垂直で前記給電部の前記受電部に対向する面に平行な方向をｙ方向とするｘｙ平面上で、前記給電部の中心位置Ｃ1を原点（０，０）、前記受電部の中心位置Ｃ2を（ｘ2、ｙ2）として、前記移動体停止範囲が、−ｘm＜ｘ2＜ｘm且つ−ｙm＜ｙ2＜ｙmと設定され、
受電部外形に対し寸法をｘ方向及び−ｘ方向にそれぞれｘmだけ拡大し、ｙ方向及び−ｙ方向にそれぞれｙmだけ拡大した図形を拡大受電部外形と定義したとき、前記１次側遮蔽板の外形寸法は、給電部外形と拡大受電部外形とを中心位置（Ｃ1とＣ2）を一致させて重ねた図形の外形（和領域）より大きな寸法に設定されることを特徴とする非接触給電装置。 5. The non-contact power feeding device according to claim 2, wherein a moving direction of the moving body is an x direction, and a direction perpendicular to the surface and parallel to a surface of the power feeding unit facing the power receiving unit is a y direction. On the xy plane, where the center position C 1 of the power feeding unit is the origin (0, 0) and the center position C 2 of the power receiving unit is (x 2 , y 2 ), the moving body stop range is −x m <x 2 <x m and is set to -y m <y 2 <y m ,
The primary-side shielding is defined when the dimensions of the power receiving part outline are enlarged by x m in the x direction and the −x direction, respectively, and the figure enlarged by y m in the y direction and the −y direction is defined as the enlarged power receiving part outline. The outer dimension of the board is set to be larger than the outer shape (sum area) of the figure in which the power supply unit outer shape and the enlarged power receiving unit outer shape are overlapped with the center positions (C 1 and C 2 ) matched. Non-contact power feeding device. 請求項１から６のいずれかに記載の非接触給電装置であって、前記遮蔽板がアルミ板から成ることを特徴とする非接触給電装置。   7. The non-contact power feeding device according to claim 1, wherein the shielding plate is made of an aluminum plate.
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