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JP5270015B1 - Power feeding device, power receiving device, and power feeding system - Google Patents

Power feeding device, power receiving device, and power feeding system Download PDF

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Publication number
JP5270015B1
JP5270015B1 JP2012057152A JP2012057152A JP5270015B1 JP 5270015 B1 JP5270015 B1 JP 5270015B1 JP 2012057152 A JP2012057152 A JP 2012057152A JP 2012057152 A JP2012057152 A JP 2012057152A JP 5270015 B1 JP5270015 B1 JP 5270015B1
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Prior art keywords
power
coil
power receiving
housing
feeding
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JP2012057152A
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JP2013192377A (en
Inventor
正剛 小泉
修 大橋
剛 西尾
則明 朝岡
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Panasonic Corp
Panasonic Holdings Corp
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Panasonic Corp
Matsushita Electric Industrial Co Ltd
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Priority to JP2012057152A priority Critical patent/JP5270015B1/en
Application filed by Panasonic Corp, Matsushita Electric Industrial Co Ltd filed Critical Panasonic Corp
Priority to PCT/JP2013/001652 priority patent/WO2013136787A1/en
Priority to CN201380008226.XA priority patent/CN104094498B/en
Priority to EP13761323.8A priority patent/EP2827473A4/en
Priority to US14/384,214 priority patent/US9895988B2/en
Priority to JP2013097582A priority patent/JP6112349B2/en
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Publication of JP5270015B1 publication Critical patent/JP5270015B1/en
Publication of JP2013192377A publication Critical patent/JP2013192377A/en
Priority to US15/880,606 priority patent/US10576842B2/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
    • B60M7/00—Power lines or rails specially adapted for electrically-propelled vehicles of special types, e.g. suspension tramway, ropeway, underground railway
    • B60M7/003—Power lines or rails specially adapted for electrically-propelled vehicles of special types, e.g. suspension tramway, ropeway, underground railway for vehicles using stored power (e.g. charging stations)
    • 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
    • B60L53/124—Detection or removal of foreign bodies
    • 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
    • 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
    • B60L53/30—Constructional details of charging stations
    • B60L53/35—Means for automatic or assisted adjustment of the relative position of charging devices and vehicles
    • B60L53/36—Means for automatic or assisted adjustment of the relative position of charging devices and vehicles by positioning the vehicle
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/80—Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
    • 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
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/10—Vehicle control parameters
    • B60L2240/36—Temperature of vehicle components or parts
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/005—Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • 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
    • Y02T90/12—Electric charging stations
    • 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)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Current-Collector Devices For Electrically Propelled Vehicles (AREA)

Abstract

【課題】給電部の受電部に対向する筐体面の少なくとも一部、または受電部の給電部に対向する筐体面の少なくとも一部を傾斜させることにより、筐体面上に存在する異物を貫く磁束を低減させ、異物が給電中に加熱されて高温度になることを抑制すること。
【解決手段】給電部１０３は、車輌に設けられた受電部１５３に対して電磁誘導を利用して非接触で給電する。給電コイル１０３ａは、リング状であり、受電部１５３と対向して受電部１５３に対して給電する。筐体１０３ｂは、給電コイル１０３ａを収納する。筐体１０３ｂは、給電コイル１０３ａを受電部１５３の方向に向かって筐体１０３ｂに投影した際に給電コイル１０３ａが投影される部分に、給電コイル１０３ａの径方向において給電コイル１０３ａの外周２１２に向かって徐々に給電コイル１０３ａに近づくような傾斜となる傾斜部２０２を有する。
【選択図】図３An object of the present invention is to provide a magnetic flux penetrating foreign matter existing on a housing surface by inclining at least a part of a housing surface facing a power receiving unit of the power feeding unit or at least a part of a housing surface facing the power feeding unit of the power receiving unit. Reduce the amount of foreign matter from being heated to a high temperature during power feeding.
A power supply unit 103 supplies power to a power reception unit 153 provided in a vehicle in a non-contact manner using electromagnetic induction. The power supply coil 103 a has a ring shape and supplies power to the power reception unit 153 so as to face the power reception unit 153. The housing 103b houses the power supply coil 103a. The housing 103b faces the outer periphery 212 of the power feeding coil 103a in the radial direction of the power feeding coil 103a at a portion where the power feeding coil 103a is projected when the power feeding coil 103a is projected onto the housing 103b in the direction of the power receiving unit 153. And an inclined portion 202 that is inclined so as to gradually approach the feeding coil 103a.
[Selection] Figure 3

Description

本発明は、車輌に設けられた受電部に対して電磁誘導を利用して非接触で給電する給電装置、受電装置及び給電システムに関する。   The present invention relates to a power supply device, a power reception device, and a power supply system that supply power to a power reception unit provided in a vehicle in a non-contact manner using electromagnetic induction.

従来、非接触の給電装置としては、地面に設置され、車輌に搭載されている受電部に給電するものが知られている（例えば、特許文献１）。   Conventionally, as a non-contact power supply device, one that is installed on the ground and supplies power to a power receiving unit mounted on a vehicle is known (for example, Patent Document 1).

特許文献１では、送電ユニットと受電ユニットの２つのユニットを備える。送電ユニットは、リング状の送電コイルを収納し、駐車スペース等の車輌が停止する位置の路面側に設けられている。受電ユニットは、リング状の受電コイルを収納し、車輌の底面の、地面に設置された送電ユニットと対向する位置に設けられている。送電ユニットの受電ユニットに対向する筐体（樹脂カバー）面は、送電コイルの径方向と平行に形成されている。   In patent document 1, two units, a power transmission unit and a power reception unit, are provided. The power transmission unit accommodates a ring-shaped power transmission coil and is provided on the road surface side where a vehicle such as a parking space stops. The power receiving unit accommodates a ring-shaped power receiving coil and is provided at a position on the bottom surface of the vehicle facing the power transmitting unit installed on the ground. The surface of the casing (resin cover) facing the power receiving unit of the power transmission unit is formed in parallel with the radial direction of the power transmission coil.

特開２０１１−１０４３５号公報JP 2011-10435 A

しかしながら、従来の給電装置においては、送電ユニットの受電ユニットに対向する筐体面は送電コイルの径方向と平行であるため、送電ユニットの受電ユニットに対向する筐体面上に異物が存在する場合に、異物に対して多くの磁束が貫くことにより異物が給電中に加熱されて高温度になるという問題がある。   However, in the conventional power supply device, since the housing surface facing the power receiving unit of the power transmission unit is parallel to the radial direction of the power transmission coil, when there is a foreign object on the housing surface facing the power receiving unit of the power transmission unit, There is a problem in that a large amount of magnetic flux penetrates the foreign matter, which causes the foreign matter to be heated during power feeding to a high temperature.

本発明の目的は、給電部の受電部に対向する筐体面の少なくとも一部、または受電部の給電部に対向する筐体面の少なくとも一部を傾斜させることにより、筐体面上に存在する異物を貫く磁束を低減させ、異物が給電中に加熱されて高温度になることを抑制することができる給電装置、受電装置及び給電システムを提供することである。   The object of the present invention is to incline at least a part of the housing surface facing the power receiving unit of the power feeding unit, or at least a part of the housing surface facing the power feeding unit of the power receiving unit, thereby removing foreign matter existing on the housing surface. An object of the present invention is to provide a power feeding device, a power receiving device, and a power feeding system capable of reducing magnetic flux penetrating and suppressing foreign matter from being heated to a high temperature during power feeding.

本発明の給電装置は、車輌に設けられた受電部に対して非接触で給電する給電装置であって、前記受電部の受電コイルに対して給電する中空のリング状の給電コイルと、前記給電コイルを収納する筐体と、を具備し、前記筐体は、前記給電コイルの中心軸と交わるとともに前記給電コイルの径方向に平坦な平坦部と、前記平坦部の端部から前記給電コイルの外周に向かって徐々に前記給電コイルに近づくように傾斜する傾斜部と、を有し、前記平坦部は、前記給電コイルの中空部を前記給電コイルの中心軸方向に前記筐体に投影してなる第１投影領域の少なくとも一部にかけて形成され、前記傾斜部は、前記給電コイルを前記給電コイルの中心軸方向に前記筐体に投影してなる第２投影領域の少なくとも一部にかけて形成され、平面を有する異物が前記傾斜部の上に前記平面で接して存在する場合、前記傾斜部は、前記異物の平面が前記給電コイルの径方向に対して所定の角度で傾斜した状態にする、構成を採る。 The power supply device of the present invention, there is provided a feeding device for feeding a non-contact manner with respect to the power receiving portion provided in the vehicle, a hollow ring-shaped feeding coil to supply power to the power receiving coil of the power receiving portion, the power supply A housing for storing the coil, and the housing intersects the central axis of the power feeding coil and is flat in the radial direction of the power feeding coil, and from the end of the flat portion , possess a gradually inclined portion inclined so as to approach to the feed coil toward the outer periphery, wherein the flat section, and projecting the hollow portion of the feeding coil to the housing in the direction of the center axis of the feed coil Formed over at least a portion of the first projection region, and the inclined portion is formed over at least a portion of the second projection region formed by projecting the feeding coil onto the housing in the central axis direction of the feeding coil, Have a plane If object is present in contact with the plane on the inclined portion, the inclined portion is in a state in which the plane of the foreign substance is inclined at a predetermined angle with respect to the radial direction of the feeding coil, a configuration.

本発明の受電装置は、車輌に設けられ、給電部から非接触で給電を受ける受電装置であって、前記給電部の給電コイルから給電を受ける中空のリング状の受電コイルと、前記受電コイルを収納する筐体と、を具備し、前記筐体は、前記受電コイルの中心軸と交わるとともに前記受電コイルの径方向に平坦な平坦部と、前記平坦部の端部から前記受電コイルの外周に向かって徐々に前記受電コイルに近づくように傾斜する傾斜部と、を有し、前記平坦部は、前記受電コイルの中空部を前記受電コイルの中心軸方向に前記筐体に投影してなる第１投影領域の少なくとも一部にかけて形成され、前記傾斜部は、前記受電コイルを前記受電コイルの中心軸方向に前記筐体に投影してなる第２投影領域の少なくとも一部にかけて形成される、構成を採る。 The power receiving device of the present invention is a power receiving device that is provided in a vehicle and receives power from a power feeding unit in a contactless manner, and includes a hollow ring-shaped power receiving coil that receives power from the power feeding coil of the power feeding unit , and the power receiving coil. A housing that houses the housing, wherein the housing intersects the central axis of the power receiving coil and is flat in the radial direction of the power receiving coil, and from the end of the flat portion to the outer periphery of the power receiving coil. towards gradually have a, an inclined portion inclined so as to approach to the power receiving coil, said flat portion, first formed by projecting the hollow portion of the power receiving coil to the housing in the direction of the central axis of the power receiving coil Formed over at least a part of one projection area, and the inclined portion is formed over at least a part of a second projection area formed by projecting the power receiving coil onto the housing in the central axis direction of the power receiving coil. Take

本発明の給電システムは、車輌に設けられた受電装置と、前記受電装置に対して非接触で給電する給電装置とを具備する給電システムであって、前記受電装置は、前記給電装置の給電コイルから給電を受ける中空のリング状の受電コイルと、前記受電コイルを収納する受電側筐体と、を具備し、前記給電装置は、前記受電装置の受電コイルに対して給電する中空のリング状の給電コイルと、前記給電コイルを収納する給電側筐体と、を具備し、前記受電側筐体は、前記受電コイルの中心軸と交わるとともに前記受電コイルの径方向に平坦な受電側平坦部と、前記受電側平坦部の端部から前記受電コイルの外周に向かって徐々に前記受電コイルに近づくように傾斜する受電側傾斜部と、を有し、前記受電側平坦部は、前記受電コイルの中空部を前記受電コイルの中心軸方向に前記筐体に投影してなる第１投影領域の少なくとも一部にかけて形成され、前記受電側傾斜部は、前記受電コイルを前記受電コイルの中心軸方向に前記筐体に投影してなる第２投影領域の少なくとも一部にかけて形成され、前記給電側筐体は、前記給電コイルの中心軸と交わるとともに前記給電コイルの径方向に平坦な給電側平坦部と、前記給電側平坦部の端部から前記給電コイルの外周に向かって徐々に前記給電コイルに近づくように傾斜する給電側傾斜部と、を有し、前記給電側平坦部は、前記給電コイルの中空部を前記給電コイルの中心軸方向に前記筐体に投影してなる第３投影領域の少なくとも一部にかけて形成され、前記給電側傾斜部は、前記給電コイルを前記給電コイルの中心軸方向に前記筐体に投影してなる第４投影領域の少なくとも一部にかけて形成される、構成を採る。 The power feeding system of the present invention is a power feeding system including a power receiving device provided in a vehicle and a power feeding device that supplies power to the power receiving device in a non-contact manner, and the power receiving device includes a power feeding coil of the power feeding device . A hollow ring-shaped power receiving coil that receives power from a power receiving side housing that houses the power receiving coil , and the power feeding device is a hollow ring-shaped power that feeds power to the power receiving coil of the power receiving device. A power receiving side housing that houses the power feeding coil, and the power receiving side housing intersects a central axis of the power receiving coil and is flat in a radial direction of the power receiving coil; A power receiving side inclined portion that inclines so as to gradually approach the power receiving coil from an end of the power receiving side flat portion toward an outer periphery of the power receiving coil, and the power receiving side flat portion of the power receiving coil Hollow The power receiving side inclined portion is formed over at least a part of a first projection region projected onto the casing in the central axis direction of the power receiving coil, and the power receiving side inclined portion moves the power receiving coil in the central axis direction of the power receiving coil. The power supply side housing intersects with the central axis of the power supply coil and is flat in the radial direction of the power supply coil, and the power supply side portion is formed over at least a part of the second projection region projected onto the power supply coil. possess the feeding side inclined portion inclined toward the end on a side flat portion on the outer periphery of the feeding coil so as to gradually approach to the feeding coil, wherein the power feeding side flat portion, the hollow portion of the feeding coil Formed over at least a part of a third projection region projected onto the casing in the central axis direction of the power feeding coil, and the power feeding side inclined portion moves the feeding coil in the central axis direction of the power feeding coil. In It is formed to extend at least part of the fourth projection area formed by shadow, a configuration.

本発明によれば、給電部の受電部に対向する筐体面の少なくとも一部、または受電部の給電部に対向する筐体面の少なくとも一部を傾斜させることにより、筐体面上に存在する異物を貫く磁束を低減させ、異物が給電中に加熱されて高温度になることを抑制することができる。   According to the present invention, by tilting at least a part of the housing surface facing the power receiving unit of the power feeding unit or at least a part of the housing surface facing the power feeding unit of the power receiving unit, foreign matter existing on the housing surface is removed. It is possible to reduce the magnetic flux penetrating and prevent the foreign matter from being heated to a high temperature during power feeding.

本発明の実施の形態１に係る充電システムの構成を示すブロック図The block diagram which shows the structure of the charging system which concerns on Embodiment 1 of this invention. 本発明の実施の形態１に係る給電部の斜視図The perspective view of the electric power feeding part which concerns on Embodiment 1 of this invention. 図２のＡ−Ａ線断面図AA line sectional view of FIG. 本発明の実施の形態１における給電コイルから発生する磁束の様子を示す図The figure which shows the mode of the magnetic flux generated from the feed coil in Embodiment 1 of this invention 本発明の実施の形態１における筐体の傾斜部における磁束の様子を示す図The figure which shows the mode of the magnetic flux in the inclination part of the housing | casing in Embodiment 1 of this invention. 本発明の実施の形態１の傾斜部の代わりに平坦部を設けた場合の磁束の様子を示す図The figure which shows the mode of the magnetic flux at the time of providing a flat part instead of the inclination part of Embodiment 1 of this invention. 本発明の実施の形態１の傾斜部の代わりに本実施の形態の傾斜部と反対側に傾斜した傾斜部を設けた場合の磁束の様子を示す図The figure which shows the mode of the magnetic flux at the time of providing the inclination part inclined on the opposite side to the inclination part of this Embodiment instead of the inclination part of Embodiment 1 of this invention. 本発明の実施の形態１における給電中において受電部に対向する給電部の筐体上に存在する異物の温度と時間との関係を示す図The figure which shows the relationship between the temperature and the time of the foreign material which exist on the housing | casing of the electric power feeding part which opposes a power receiving part in the electric power feeding in Embodiment 1 of this invention. 本発明の実施の形態２に係る給電部の斜視図The perspective view of the electric power feeding part which concerns on Embodiment 2 of this invention. 図９のＢ−Ｂ線断面図BB sectional view of FIG. 本発明の実施の形態３に係る給電部の断面図Sectional drawing of the electric power feeding part which concerns on Embodiment 3 of this invention 本発明の実施の形態４に係る給電部の断面図Sectional drawing of the electric power feeding part which concerns on Embodiment 4 of this invention 本発明の実施の形態５に係る給電システムの構成を示す図The figure which shows the structure of the electric power feeding system which concerns on Embodiment 5 of this invention. 本発明の実施の形態５における給電コイルから発生する磁束の様子を示す図The figure which shows the mode of the magnetic flux generated from the feeding coil in Embodiment 5 of this invention 本発明の実施の形態５における給電コイル及び受電コイルの周辺にできる磁束の分布を示す図The figure which shows distribution of the magnetic flux made around the feeding coil and receiving coil in Embodiment 5 of this invention 本発明の実施の形態６に係る充電システムの構成を示す図The figure which shows the structure of the charging system which concerns on Embodiment 6 of this invention.

以下、本発明の実施の形態について、図面を参照して詳細に説明する。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

（実施の形態１）
＜充電システムの構成＞
図１は、本発明の実施の形態１における充電システム１０の構成を示すブロック図である。 (Embodiment 1)
<Configuration of charging system>
FIG. 1 is a block diagram showing a configuration of charging system 10 according to Embodiment 1 of the present invention.

充電システム１０は、給電装置１００、車輌１５０、蓄電池１５４及び充電装置１７０を有する。   The charging system 10 includes a power feeding device 100, a vehicle 150, a storage battery 154, and a charging device 170.

給電装置１００は、給電部１０３が地表ｇから露出するように地面上に設置もしくは埋設される。給電装置１００は、例えば駐車スペースに設けられ、車輌１５０の駐車中に、受電部１５３に対向して充電装置１７０に対して給電する。なお、給電装置１００の構成については後述する。   The power supply apparatus 100 is installed or embedded on the ground such that the power supply unit 103 is exposed from the ground surface g. The power supply device 100 is provided in a parking space, for example, and supplies power to the charging device 170 while facing the power receiving unit 153 while the vehicle 150 is parked. Note that the configuration of the power supply apparatus 100 will be described later.

車輌１５０は、蓄電池１５４及び充電装置１７０を有し、蓄電池１５４を動力源として走行する。車輌１５０は、例えば、ＨＥＶ（Hybrid Electric Vehicle）、ＰＥＶ（Plug-in Electric Vehicle）またはＥＶ（Electric Vehicle）といった蓄電池１５４の電力で走行する自動車である。   The vehicle 150 includes a storage battery 154 and a charging device 170, and travels using the storage battery 154 as a power source. The vehicle 150 is, for example, an automobile that travels with the electric power of the storage battery 154 such as HEV (Hybrid Electric Vehicle), PEV (Plug-in Electric Vehicle), or EV (Electric Vehicle).

蓄電池１５４は、充電装置１７０により供給される電力を蓄える。   Storage battery 154 stores the power supplied by charging device 170.

充電装置１７０は、車両側制御部１５１及び受電装置１６０を有し、給電装置１００から給電される電力を蓄電池１５４に供給する。なお、充電装置１７０の構成の詳細については後述する。   The charging device 170 includes a vehicle-side control unit 151 and a power receiving device 160, and supplies power supplied from the power supply device 100 to the storage battery 154. The details of the configuration of the charging device 170 will be described later.

車輌側制御部１５１は、受電装置１６０に対して、充電に伴う各種処理または充電停止に伴う各種処理を行うように制御する。   The vehicle-side controller 151 controls the power receiving device 160 to perform various processes associated with charging or various processes associated with stopping charging.

受電装置１６０は、車輌側制御部１５１の制御に従って、給電装置１００から供給された電力を蓄電池１５４に供給する。なお、受電装置１６０の構成については後述する。   The power receiving device 160 supplies the power supplied from the power supply device 100 to the storage battery 154 according to the control of the vehicle-side control unit 151. Note that the configuration of the power receiving apparatus 160 will be described later.

＜給電装置の構成＞
給電装置１００は、給電側通信部１０１と、給電側制御部１０２と、給電部１０３とを有する。 <Configuration of power supply device>
The power supply apparatus 100 includes a power supply side communication unit 101, a power supply side control unit 102, and a power supply unit 103.

給電側通信部１０１は、車輌側通信部１５２からの給電開始信号または給電停止信号を受信する。給電側通信部１０１は、受信した給電開始信号または給電停止信号を給電側制御部１０２に出力する。   The power supply side communication unit 101 receives a power supply start signal or a power supply stop signal from the vehicle side communication unit 152. The power supply side communication unit 101 outputs the received power supply start signal or power supply stop signal to the power supply side control unit 102.

給電側制御部１０２は、給電側通信部１０１から入力した給電開始信号に従って、給電部１０３に対して給電を開始するように制御する。給電側制御部１０２は、給電側通信部１０１から入力した給電停止信号に従って、給電部１０３に対して給電を停止するように制御する。   The power supply side control unit 102 controls the power supply unit 103 to start power supply in accordance with the power supply start signal input from the power supply side communication unit 101. The power supply side control unit 102 controls the power supply unit 103 to stop power supply in accordance with the power supply stop signal input from the power supply side communication unit 101.

給電部１０３は、給電コイル１０３ａを有する。給電部１０３は、給電側制御部１０２の制御に従って、給電コイル１０３ａに所定の周波数の電流を供給することにより、電磁誘導を利用して受電部１５３に給電する。この給電は、例えば、電磁誘導方式、もしくは磁気共鳴方式にて行われる。なお、給電部１０３の構成の詳細については後述する。   The power feeding unit 103 includes a power feeding coil 103a. The power feeding unit 103 feeds power to the power receiving unit 153 using electromagnetic induction by supplying a current having a predetermined frequency to the power feeding coil 103 a according to the control of the power feeding side control unit 102. This power supply is performed by, for example, an electromagnetic induction method or a magnetic resonance method. Details of the configuration of the power supply unit 103 will be described later.

＜受電装置の構成＞
受電装置１６０は、車輌側通信部１５２及び受電部１５３を有する。 <Configuration of power receiving device>
The power receiving device 160 includes a vehicle side communication unit 152 and a power receiving unit 153.

車輌側通信部１５２は、車輌側制御部１５１の制御に従って、充電開始信号または充電停止信号を生成し、生成した充電開始信号または充電停止信号を給電側通信部１０１に送信する。   The vehicle side communication unit 152 generates a charge start signal or a charge stop signal according to the control of the vehicle side control unit 151, and transmits the generated charge start signal or charge stop signal to the power supply side communication unit 101.

受電部１５３は、車輌１５０の底部に設けられ、受電コイル１５３ａを有するとともに、蓄電池１５４を充電する際に、給電部１０３と非接触状態で対向する。受電部１５３は、車輌側制御部１５１の制御に従って、給電部１０３から受電コイル１５３ａに給電された電力を蓄電池１５４に供給する。   The power receiving unit 153 is provided at the bottom of the vehicle 150, has a power receiving coil 153a, and faces the power feeding unit 103 in a non-contact state when charging the storage battery 154. The power reception unit 153 supplies the storage battery 154 with the power supplied from the power supply unit 103 to the power reception coil 153a according to the control of the vehicle-side control unit 151.

＜給電部の構成＞
図２は、給電部１０３の斜視図である。図３は、図２のＡ−Ａ線断面図である。 <Configuration of power supply unit>
FIG. 2 is a perspective view of the power feeding unit 103. FIG. 3 is a cross-sectional view taken along line AA in FIG.

給電部１０３は、給電コイル１０３ａ（図３参照）及び筐体１０３ｂを有する。   The power feeding unit 103 includes a power feeding coil 103a (see FIG. 3) and a housing 103b.

給電コイル１０３ａは、中空のリング状であり、筐体１０３ｂの内底面に載置されている。給電コイル１０３ａは、例えば、商用の電源に接続されており、この電源から電流が供給されることにより受電部１５３に給電する。給電コイル１０３ａは、例えば金属細線を巻回して形成されている。   The feeding coil 103a has a hollow ring shape and is placed on the inner bottom surface of the housing 103b. The power supply coil 103a is connected to, for example, a commercial power supply, and supplies power to the power receiving unit 153 when current is supplied from the power supply. The power supply coil 103a is formed by winding a thin metal wire, for example.

筐体１０３ｂは、図３に示すように、中心軸Ｐ１を含む平面で切断した断面（図２のＡ−Ａ線断面）が台形状であり、給電コイル１０３ａを収納する。筐体１０３ｂは、平坦部２０１と傾斜部２０２とを有する。筐体１０３ｂは、給電コイル１０３ａを受電部１５３の方向に向かって筐体１０３ｂに投影した際に、給電コイル１０３ａが投影される部分に傾斜部２０２を有する。   As shown in FIG. 3, the casing 103b has a trapezoidal cross section (a cross section taken along the line AA in FIG. 2) cut along a plane including the central axis P1, and houses the feeding coil 103a. The housing 103b includes a flat portion 201 and an inclined portion 202. The housing 103b includes an inclined portion 202 at a portion where the power feeding coil 103a is projected when the power feeding coil 103a is projected onto the housing 103b in the direction of the power receiving unit 153.

平坦部２０１は、給電コイル１０３ａの中空の部分２０３に対向し、かつ給電コイル１０３ａの中心軸Ｐ１と交わるとともに、給電コイル１０３ａの径方向に平坦になるように形成されている。平坦部２０１は、給電の際に受電部１５３に対向する。   The flat portion 201 is opposed to the hollow portion 203 of the power supply coil 103a, intersects with the central axis P1 of the power supply coil 103a, and is formed to be flat in the radial direction of the power supply coil 103a. The flat part 201 faces the power receiving part 153 during power feeding.

傾斜部２０２は、筐体１０３ｂに設けられており、給電コイル１０３ａの径方向において平坦部２０１の端部２０４から給電コイル１０３ａの外周２１２に向かって下り傾斜、すなわち、給電コイル１０３ａに徐々に近づくような傾斜となるように形成されている。ここで、給電コイル１０３ａの径方向とは、給電コイル１０３ａの中心軸Ｐ１と直交する方向である。傾斜部２０２は、一端が平坦部２０１の端部２０４と接続し、他端が側壁部２０５と接続するように形成されている。これにより、傾斜部２０２上に存在する異物は、給電コイル１０３ａの径方向に対して所定の角度で傾斜した状態になる。この結果、給電中に傾斜部２０２上の異物が加熱されて高温度になることを防ぐことができる。なお、傾斜部２０２上の異物が加熱され難い理由については後述する。   The inclined portion 202 is provided in the housing 103b, and inclines downward from the end portion 204 of the flat portion 201 toward the outer periphery 212 of the feeding coil 103a in the radial direction of the feeding coil 103a, that is, gradually approaches the feeding coil 103a. It is formed to have such an inclination. Here, the radial direction of the feeding coil 103a is a direction orthogonal to the central axis P1 of the feeding coil 103a. The inclined portion 202 is formed so that one end is connected to the end portion 204 of the flat portion 201 and the other end is connected to the side wall portion 205. As a result, the foreign matter present on the inclined portion 202 is inclined at a predetermined angle with respect to the radial direction of the power feeding coil 103a. As a result, it is possible to prevent the foreign matter on the inclined portion 202 from being heated to a high temperature during power feeding. The reason why the foreign matter on the inclined portion 202 is difficult to be heated will be described later.

因みに、本実施の形態では、車輌１５０の底部の受電部１５３へ大電力を給電するので、給電コイル１０３ａの形状が大きくなり、給電部１０３と車輌１５０の底部とのクリアランスの関係から給電部１０３の筐体１０３ｂに十分な曲面を設けることはできない。そのため、筐体１０３ｂ上の異物が自然落下する様な凸形状の斜面を設けることは困難である。従って、本実施の形態のように、給電部１０３の筐体１０３ｂの受電部１５３と対向する部分に、傾斜部２０２を形成するとともに平坦部２０１を形成することにより、給電部１０３の筐体１０３ｂの受電部１５３と対向する部分全体に斜面を設ける必要がなく、車輌１５０の底面方向の高さを抑えて給電部１０３と車輌１５０の底部とのクリアランスを保つことができる。   Incidentally, in the present embodiment, since a large amount of power is supplied to the power receiving unit 153 at the bottom of the vehicle 150, the shape of the power supply coil 103a increases, and the power supply unit 103 is determined from the relationship between the clearance between the power supply unit 103 and the bottom of the vehicle 150. A sufficient curved surface cannot be provided in the housing 103b. Therefore, it is difficult to provide a convex slope so that the foreign matter on the housing 103b naturally falls. Therefore, as in the present embodiment, the inclined portion 202 and the flat portion 201 are formed on the portion of the casing 103b of the power feeding section 103 that faces the power receiving section 153, thereby forming the casing 103b of the power feeding section 103. It is not necessary to provide a slope on the entire portion facing the power receiving unit 153, and the clearance between the power feeding unit 103 and the bottom of the vehicle 150 can be maintained while suppressing the height in the bottom direction of the vehicle 150.

＜筐体と磁束との関係＞
図４は、本実施の形態における給電コイル１０３ａから発生する磁束の様子を示す図である。図５は、本実施の形態における筐体１０３ｂの傾斜部２０２における磁束の様子を示す図である。図６は、本実施の形態の傾斜部２０２の代わりに平坦部を設けた場合の磁束の様子を示す図である。図７は、本実施の形態の傾斜部２０２の代わりに本実施の形態の傾斜部２０２と反対側に傾斜した傾斜部を設けた場合の磁束の様子を示す図である。 <Relationship between housing and magnetic flux>
FIG. 4 is a diagram showing a state of magnetic flux generated from the feeding coil 103a in the present embodiment. FIG. 5 is a diagram illustrating a state of magnetic flux in the inclined portion 202 of the housing 103b in the present embodiment. FIG. 6 is a diagram illustrating a state of magnetic flux when a flat portion is provided instead of the inclined portion 202 of the present embodiment. FIG. 7 is a diagram showing a state of magnetic flux when an inclined portion inclined on the opposite side of the inclined portion 202 of the present embodiment is provided instead of the inclined portion 202 of the present embodiment.

図５において、本実施の形態の傾斜部２０２上に異物５０１が存在する場合との比較として、図６で説明する形状の筐体上に存在する異物６０１及び図７で説明する形状の筐体上に存在する異物７０１を破線で示す。   In FIG. 5, as compared with the case where the foreign substance 501 is present on the inclined portion 202 of the present embodiment, the foreign substance 601 present on the casing having the shape described in FIG. 6 and the casing described in FIG. A foreign substance 701 existing above is indicated by a broken line.

本実施の形態では、図４に示すように、給電コイル１０３ａにより磁束Ｂ１が発生する。この時、図５に示すように、筐体１０３ｂの傾斜部２０２上の異物５０１は、発生する磁束Ｂ２に対して平行となり、異物５０１を貫く磁束の本数を制限することができ、給電中に異物５０１が高温度になることを抑制することができる。   In the present embodiment, as shown in FIG. 4, a magnetic flux B1 is generated by the feeding coil 103a. At this time, as shown in FIG. 5, the foreign matter 501 on the inclined portion 202 of the housing 103b is parallel to the generated magnetic flux B2, and the number of magnetic fluxes penetrating the foreign matter 501 can be limited. It can suppress that the foreign material 501 becomes high temperature.

一方、傾斜部２０２に代えて、図６に示すように、給電部の筐体における受電部１５３に対向する面の全てを、給電コイル１０３ａの径方向に平坦な平坦部にした場合、または、図７に示すように、給電コイル１０３ａの外周２１２から給電コイル１０３ａの中心軸Ｐ１に向かって徐々に給電コイル１０３ａに近づく傾斜となるように傾斜部を設けた場合には、図５と比べて筐体上の異物６０１、７０１を貫く磁束Ｂ３、Ｂ４が多くなる。   On the other hand, instead of the inclined portion 202, as shown in FIG. 6, when the entire surface of the casing of the power feeding portion facing the power receiving portion 153 is a flat portion that is flat in the radial direction of the power feeding coil 103a, or As shown in FIG. 7, when an inclined portion is provided so as to gradually approach the power supply coil 103a from the outer periphery 212 of the power supply coil 103a toward the central axis P1 of the power supply coil 103a, compared to FIG. The magnetic fluxes B3 and B4 penetrating through the foreign objects 601 and 701 on the housing increase.

そのために、筐体上の異物は、図６及び図７に比べて、図５の方が高温度にならない。   For this reason, the foreign matter on the housing does not reach a higher temperature in FIG. 5 than in FIGS.

また、傾斜部２０２は、給電コイル１０３ａにおける中空の部分２０３の周囲の内縁部２１１と外周２１２との中間部２１３に対向していることが好ましい。その理由は、中間部２１３に対向する部分では、コイルが発生させる磁束に対して異物が平行となり、鎖交する磁束が少なくなるため、他の部分と比べて発熱が小さくなるからである。   In addition, the inclined portion 202 is preferably opposed to an intermediate portion 213 between the inner edge portion 211 and the outer periphery 212 around the hollow portion 203 in the power feeding coil 103a. The reason is that in the portion facing the intermediate portion 213, the foreign matter is parallel to the magnetic flux generated by the coil, and the interlinkage magnetic flux is reduced, so that heat generation is reduced compared to other portions.

＜給電部の筐体上に存在する異物の温度と時間との関係＞
図８は、給電中において受電部に対向する給電部の筐体上に存在する異物の温度と時間との関係を示す図である。図８において、Ｓ１は、傾斜部を設けない図６に示す形状の筐体上の異物の温度変化の時間推移を示し、Ｓ２は、本実施の形態の傾斜部２０２上の異物の温度変化の時間推移を示す。 <Relationship between temperature and time of foreign matter on the power supply housing>
FIG. 8 is a diagram illustrating a relationship between the temperature of a foreign object existing on the casing of the power feeding unit facing the power receiving unit during power feeding and time. In FIG. 8, S1 shows the time transition of the temperature change of the foreign matter on the casing having the shape shown in FIG. 6 without the inclined portion, and S2 shows the temperature change of the foreign matter on the inclined portion 202 of the present embodiment. Shows the time transition.

図８より、本実施の形態では、従来に比べて、異物の温度上昇を抑制することができることが明らかである。   From FIG. 8, it is clear that the temperature rise of the foreign material can be suppressed in the present embodiment as compared with the conventional case.

＜本実施の形態の効果＞
本実施の形態によれば、給電コイルを受電部の方向に向かって筐体に投影した際に給電コイルが投影される部分に、給電コイルの径方向において給電コイルの外周に向かって徐々に給電コイルに近づくような傾斜となる傾斜部を形成することにより、傾斜部上に存在する異物が給電中に加熱されて高温度になることを抑制することができる。 <Effects of the present embodiment>
According to this embodiment, when the power feeding coil is projected onto the housing in the direction of the power receiving unit, the power feeding coil is gradually projected toward the outer periphery of the power feeding coil in the radial direction of the power feeding coil. By forming the inclined portion that is inclined so as to approach the coil, it is possible to suppress the foreign matter existing on the inclined portion from being heated to a high temperature during power feeding.

また、本実施の形態によれば、給電部の筐体の受電部と対向する部分に、傾斜部を形成するとともに平坦部を形成することにより、給電部の筐体の受電部と対向する部分全体に曲面を設ける必要がなく、車輌の底面方向の高さを抑えて給電部と車輌底面とのクリアランスを保つことができる。   In addition, according to the present embodiment, the portion that faces the power receiving unit of the casing of the power feeding unit by forming the inclined portion and the flat part in the portion facing the power receiving unit of the casing of the power feeding unit. It is not necessary to provide a curved surface as a whole, and the clearance between the power feeding portion and the vehicle bottom surface can be maintained by suppressing the height in the bottom surface direction of the vehicle.

（実施の形態２）
本実施の形態において、充電システムは、給電部１０３の代わりに給電部４００を用いる以外は図１と同一構成であるので、その説明を省略する。 (Embodiment 2)
In the present embodiment, the charging system has the same configuration as that of FIG. 1 except that the power feeding unit 400 is used instead of the power feeding unit 103, and thus the description thereof is omitted.

＜給電部の構成＞
図９は、給電部４００の斜視図である。図１０は、図９のＢ−Ｂ線断面図である。なお、図９及び図１０において、図２及び図３と同一構成である部分には同一の符号を付してその説明を省略する。 <Configuration of power supply unit>
FIG. 9 is a perspective view of the power feeding unit 400. 10 is a cross-sectional view taken along line BB in FIG. 9 and 10, the same reference numerals are given to the same components as those in FIGS. 2 and 3, and the description thereof is omitted.

給電部４００は、給電コイル１０３ａ（図１０参照）及び筐体４００ａを有する。   The power feeding unit 400 includes a power feeding coil 103a (see FIG. 10) and a housing 400a.

給電コイル１０３ａは、中空のリング状であり、筐体４００ａの内底面に載置されている。   The feeding coil 103a has a hollow ring shape and is placed on the inner bottom surface of the housing 400a.

筐体４００ａは、図１０に示すように、中心軸Ｐ１を含む平面で切断した断面（図９のＢ−Ｂ線断面）が台形状であり、給電コイル１０３ａを収納する。筐体４００ａは、平坦部４０１と、傾斜部４０２と、外周部４０３とを有する。筐体４００ａは、給電コイル１０３ａを受電部１５３の方向に向かって筐体４００ａに投影した際に、給電コイル１０３ａが投影される部分に傾斜部４０２を有する。   As shown in FIG. 10, the casing 400a has a trapezoidal cross section (a cross section taken along line BB in FIG. 9) cut along a plane including the central axis P1, and houses the feeding coil 103a. The housing 400 a includes a flat part 401, an inclined part 402, and an outer peripheral part 403. The housing 400a includes an inclined portion 402 at a portion where the power feeding coil 103a is projected when the power feeding coil 103a is projected onto the housing 400a in the direction of the power receiving unit 153.

平坦部４０１は、給電コイル１０３ａの中空の部分２０３に対向し、かつ給電コイル１０３ａの中心軸Ｐ１と交わるとともに、給電コイル１０３ａの径方向に平坦になるように形成されている。平坦部４０１は、給電の際に受電部１５３に対向する。   The flat portion 401 is formed so as to face the hollow portion 203 of the power supply coil 103a, intersect the central axis P1 of the power supply coil 103a, and be flat in the radial direction of the power supply coil 103a. The flat portion 401 faces the power receiving unit 153 during power feeding.

傾斜部４０２は、筐体４００ａに設けられており、給電コイル１０３ａの径方向において平坦部４０１の端部４０４から給電コイル１０３ａの外周２１２に向かって下り傾斜、すなわち、給電コイル１０３ａに徐々に近づくような傾斜となるように形成されている。これにより、傾斜部４０２上に存在する異物は、給電コイル１０３ａの径方向に対して所定の角度で傾斜した状態になる。この結果、上記の実施の形態１と同様の理由により、給電中に傾斜部４０２上の異物が加熱されて高温度になることを防ぐことができる。   The inclined portion 402 is provided in the housing 400a, and inclines downward from the end 404 of the flat portion 401 toward the outer periphery 212 of the feeding coil 103a in the radial direction of the feeding coil 103a, that is, gradually approaches the feeding coil 103a. It is formed to have such an inclination. As a result, the foreign matter present on the inclined portion 402 is inclined at a predetermined angle with respect to the radial direction of the power feeding coil 103a. As a result, for the same reason as in the first embodiment, the foreign matter on the inclined portion 402 can be prevented from being heated to a high temperature during power feeding.

外周部４０３は、給電コイル１０３ａの径方向に平坦であり、一端が傾斜部４０２と接続するとともに、他端が筐体４００ａの側壁部４０５と接続するように形成されている。外周部４０３の傾斜部４０２と接続する側は、給電コイル１０３ａに対向する。外周部４０３は、給電する際に、受電部１５３に対向する。   The outer peripheral portion 403 is flat in the radial direction of the power feeding coil 103a, and is formed so that one end is connected to the inclined portion 402 and the other end is connected to the side wall portion 405 of the housing 400a. The side of the outer peripheral portion 403 connected to the inclined portion 402 faces the power supply coil 103a. The outer peripheral portion 403 faces the power receiving portion 153 when power is supplied.

なお、上記の実施の形態１と同様の理由により、傾斜部４０２は、給電コイル１０３ａの中間部２１３に対向していることが好ましい。   For the same reason as in the first embodiment, the inclined portion 402 is preferably opposed to the intermediate portion 213 of the power feeding coil 103a.

＜本実施の形態の効果＞
本実施の形態によれば、上記の実施の形態１の効果に加えて、給電コイルの径方向の端部に平坦な外周部を設ける。これにより、傾斜部の長さを短くすることができるので、その分筐体の厚みを薄くすることができ、傾斜部上の異物の発熱を抑えた上で車体とのクリアランスを十分にとることができる。 <Effects of the present embodiment>
According to the present embodiment, in addition to the effects of the first embodiment, a flat outer peripheral portion is provided at the radial end portion of the power feeding coil. As a result, the length of the inclined portion can be shortened, so that the thickness of the housing can be reduced correspondingly, and sufficient clearance from the vehicle body can be obtained while suppressing the generation of foreign matter on the inclined portion. Can do.

（実施の形態３）
本実施の形態において、充電システムは、給電部１０３の代わりに給電部５００を用いる以外は図１と同一構成であるので、その説明を省略する。 (Embodiment 3)
In the present embodiment, the charging system has the same configuration as that of FIG. 1 except that the power feeding unit 500 is used instead of the power feeding unit 103, and thus the description thereof is omitted.

＜給電部の構成＞
図１１は、給電部５００の断面図である。なお、図１１において、図３と同一構成である部分には同一の符号を付してその説明を省略する。また、給電部５００の形状は、平坦部５０１、傾斜部５０２及び側壁部５０４の寸法が多少異なる以外は図２と同一形状であるので、給電部５００の斜視図を省略する。また、図１１は、給電部５００を図２のＡ−Ａ線に相当する線で切断した際の断面図である。 <Configuration of power supply unit>
FIG. 11 is a cross-sectional view of the power feeding unit 500. In FIG. 11, parts having the same configuration as in FIG. Further, since the shape of the power feeding unit 500 is the same as that of FIG. 2 except that the dimensions of the flat part 501, the inclined part 502, and the side wall part 504 are slightly different, a perspective view of the power feeding part 500 is omitted. FIG. 11 is a cross-sectional view of the power feeding unit 500 taken along a line corresponding to the line AA in FIG.

給電部５００は、給電コイル１０３ａ及び筐体５００ａを有する。   The power feeding unit 500 includes a power feeding coil 103a and a housing 500a.

給電コイル１０３ａは、中空のリング状であり、筐体５００ａの内底面に載置されている。   The feeding coil 103a has a hollow ring shape and is placed on the inner bottom surface of the housing 500a.

筐体５００ａは、図１１に示すように、中心軸Ｐ１を含む平面で切断した断面が台形状であり、給電コイル１０３ａを収納する。筐体５００ａは、平坦部５０１及び傾斜部５０２を有する。筐体５００ａは、給電コイル１０３ａを受電部１５３の方向に向かって筐体５００ａに投影した際に、給電コイル１０３ａが投影される部分に傾斜部５０２を有する。   As shown in FIG. 11, the casing 500a has a trapezoidal cross section cut along a plane including the central axis P1, and houses the feeding coil 103a. The housing 500 a includes a flat part 501 and an inclined part 502. The housing 500a includes an inclined portion 502 at a portion where the power feeding coil 103a is projected when the power feeding coil 103a is projected onto the housing 500a in the direction of the power receiving unit 153.

平坦部５０１は、中央部が給電コイル１０３ａの中空の部分２０３に対向するとともに、端部５０３が給電コイル１０３ａに対向する。平坦部５０１は、給電コイル１０３ａの中心軸Ｐ１と交わるとともに給電コイル１０３ａの径方向に平坦になるように形成されている。平坦部５０１は、給電の際に受電部１５３に対向する。   The flat portion 501 has a central portion facing the hollow portion 203 of the feeding coil 103a and an end portion 503 facing the feeding coil 103a. The flat portion 501 intersects with the central axis P1 of the power feeding coil 103a and is formed to be flat in the radial direction of the power feeding coil 103a. The flat portion 501 faces the power receiving unit 153 during power feeding.

傾斜部５０２は、筐体５００ａに設けられており、給電コイル１０３ａの径方向において平坦部５０１の端部５０３から給電コイル１０３ａの外周２１２に向かって下り傾斜、すなわち、給電コイル１０３ａに徐々に近づくような傾斜となるように形成されている。傾斜部５０２は、一端が平坦部５０１の端部５０３と接続し、他端が側壁部５０４と接続するように形成されている。これにより、傾斜部５０２上に存在する異物は、給電コイル１０３ａの径方向に対して所定の角度で傾斜した状態になる。この結果、上記の実施の形態１と同様の理由により、充電中に傾斜部５０２上の異物が加熱されて高温度になることを防ぐことができる。   The inclined portion 502 is provided in the casing 500a and is inclined downward from the end portion 503 of the flat portion 501 toward the outer periphery 212 of the feeding coil 103a in the radial direction of the feeding coil 103a, that is, gradually approaches the feeding coil 103a. It is formed to have such an inclination. The inclined portion 502 is formed so that one end is connected to the end portion 503 of the flat portion 501 and the other end is connected to the side wall portion 504. As a result, the foreign matter present on the inclined portion 502 is inclined at a predetermined angle with respect to the radial direction of the feeding coil 103a. As a result, for the same reason as in the first embodiment, it is possible to prevent the foreign matter on the inclined portion 502 from being heated to a high temperature during charging.

なお、傾斜部５０２は、上記実施の形態１と同様の理由により、給電コイル１０３ａの中間部２１３に対向していることが好ましい。   The inclined portion 502 is preferably opposed to the intermediate portion 213 of the feeding coil 103a for the same reason as in the first embodiment.

＜本実施の形態の効果＞
本実施の形態によれば、平坦部の内面の端部が給電コイルに対向するように平坦部を形成した。これにより、上記の実施の形態１の効果に加えて、傾斜部上の異物が発熱し易い中間部では発熱を抑えつつ、傾斜部の長さを短くすることができ、筐体の厚みを薄くすることができるとともに、車体とのクリアランスを保つことができる。 <Effects of the present embodiment>
According to the present embodiment, the flat portion is formed so that the end portion of the inner surface of the flat portion faces the feeding coil. Thereby, in addition to the effect of the first embodiment, the length of the inclined portion can be shortened while the heat generation is suppressed in the intermediate portion where the foreign matter on the inclined portion easily generates heat, and the thickness of the casing is reduced. And can maintain a clearance with the vehicle body.

（実施の形態４）
図１２は、給電部６００の断面図である。なお、図１２において、図３と同一構成である部分には同一の符号を付してその説明を省略する。また、給電部６００の形状は、平坦部６０１、傾斜部６０２、平坦部６０３及び側壁部６０５の寸法が多少異なる以外は図９と同一形状であるので、給電部６００の斜視図を省略する。また、図１２は、給電部６００を図９のＢ−Ｂ線に相当する線で切断した際の断面図である。 (Embodiment 4)
FIG. 12 is a cross-sectional view of the power feeding unit 600. In FIG. 12, parts having the same configuration as in FIG. Further, since the shape of the power supply unit 600 is the same as that of FIG. 9 except that the dimensions of the flat part 601, the inclined part 602, the flat part 603, and the side wall part 605 are slightly different, the perspective view of the power supply part 600 is omitted. FIG. 12 is a cross-sectional view of the power feeding unit 600 taken along a line corresponding to the line BB in FIG.

給電部６００は、給電コイル１０３ａ及び筐体６００ａを有する。   The power feeding unit 600 includes a power feeding coil 103a and a housing 600a.

給電コイル１０３ａは、中空のリング状であり、筐体６００ａの内底面に載置されている。   The feeding coil 103a has a hollow ring shape and is placed on the inner bottom surface of the housing 600a.

筐体６００ａは、図１２に示すように、中心軸Ｐ１を含む平面で切断した断面が台形状であり、給電コイル１０３ａを収納する。筐体６００ａは、平坦部６０１と、傾斜部６０２と、外周部６０３とを有する。筐体６００ａは、給電コイル１０３ａを受電部１５３の方向に向かって筐体６００ａに投影した際に、給電コイル１０３ａが投影される部分に傾斜部６０２を有する。   As shown in FIG. 12, the casing 600a has a trapezoidal cross section cut along a plane including the central axis P1, and houses the feeding coil 103a. The housing 600 a includes a flat part 601, an inclined part 602, and an outer peripheral part 603. The housing 600a includes an inclined portion 602 at a portion where the power feeding coil 103a is projected when the power feeding coil 103a is projected onto the housing 600a in the direction of the power receiving unit 153.

平坦部６０１は、中央部が給電コイル１０３ａの中空の部分２０３に対向するとともに、端部６０４が給電コイル１０３ａに対向する。平坦部６０１は、給電コイル１０３ａの中心軸Ｐ１と交わるとともに給電コイル１０３ａの径方向に平坦になるように形成されている。平坦部６０１は、給電の際に受電部１５３に対向する。   The flat portion 601 has a central portion facing the hollow portion 203 of the feeding coil 103a and an end portion 604 facing the feeding coil 103a. The flat portion 601 is formed so as to intersect the central axis P1 of the power feeding coil 103a and to be flat in the radial direction of the power feeding coil 103a. The flat part 601 faces the power receiving part 153 during power feeding.

傾斜部６０２は、筐体６００ａに設けられており、給電コイル１０３ａの径方向において平坦部６０１の端部６０４から給電コイル１０３ａの外周２１２に向かって下り傾斜、すなわち、給電コイル１０３ａに徐々に近づくような傾斜となるように形成されている。傾斜部６０２は、一端が平坦部６０１の端部６０４と接続し、他端が外周部６０３と接続するように形成されている。これにより、傾斜部６０２上に存在する異物は、給電コイル１０３ａに対して所定の角度で傾斜した状態になる。この結果、上記の実施の形態１と同様の理由により、給電中に傾斜部６０２上の異物が加熱されて高温度になることを防ぐことができる。   The inclined portion 602 is provided in the housing 600a and is inclined downward from the end portion 604 of the flat portion 601 toward the outer periphery 212 of the feeding coil 103a in the radial direction of the feeding coil 103a, that is, gradually approaches the feeding coil 103a. It is formed to have such an inclination. The inclined portion 602 is formed so that one end is connected to the end portion 604 of the flat portion 601 and the other end is connected to the outer peripheral portion 603. Thereby, the foreign material existing on the inclined portion 602 is inclined at a predetermined angle with respect to the power feeding coil 103a. As a result, it is possible to prevent the foreign matter on the inclined portion 602 from being heated to a high temperature during power feeding for the same reason as in the first embodiment.

外周部６０３は、給電コイル１０３ａの径方向に平坦であり、一端が傾斜部６０２と接続するとともに、他端が側壁部６０５と接続するように形成されている。外周部６０３の傾斜部６０２と接続する側は、給電コイル１０３ａと対向する。外周部６０３は、給電する際に、受電部１５３に対向する。   The outer peripheral portion 603 is flat in the radial direction of the power feeding coil 103 a and is formed so that one end is connected to the inclined portion 602 and the other end is connected to the side wall portion 605. The side of the outer peripheral portion 603 that is connected to the inclined portion 602 faces the feeding coil 103a. The outer peripheral portion 603 faces the power receiving portion 153 when power is supplied.

なお、傾斜部６０２は、上記実施の形態１と同様の理由により、給電コイル１０３ａの中間部２１３に対向していることが好ましい。   Note that the inclined portion 602 is preferably opposed to the intermediate portion 213 of the power feeding coil 103a for the same reason as in the first embodiment.

＜本実施の形態の効果＞
本実施の形態によれば、給電コイルの径方向に平坦な外周部を設けるとともに、平坦部の内面の端部が給電コイルに対向するように平坦部を形成する。これにより、上記の実施の形態１の効果に加えて、傾斜部上の異物が発熱し易い中間部では発熱を抑えつつ、傾斜部の長さを短くすることができ、筐体の厚みを薄くすることができるとともに、車体とのクリアランスを保つことができる。 <Effects of the present embodiment>
According to the present embodiment, the flat outer portion is provided in the radial direction of the power feeding coil, and the flat portion is formed so that the end of the inner surface of the flat portion faces the power feeding coil. Thereby, in addition to the effect of the first embodiment, the length of the inclined portion can be shortened while the heat generation is suppressed in the intermediate portion where the foreign matter on the inclined portion easily generates heat, and the thickness of the casing is reduced. And can maintain a clearance with the vehicle body.

（実施の形態５）
図１３は、本発明の実施の形態５に係る給電システム１１００の構成を示す図である。なお、図１３において、図２及び図３と同一構成である部分には同一の符号を付してその説明を省略する。また、本実施の形態における充電システムは、受電部１５３の代わりに受電部７００を用いる以外は図１と同一構成であるので、その説明を省略する。 (Embodiment 5)
FIG. 13 is a diagram showing a configuration of a power feeding system 1100 according to Embodiment 5 of the present invention. In FIG. 13, parts having the same configuration as in FIGS. 2 and 3 are denoted by the same reference numerals and description thereof is omitted. Further, the charging system in the present embodiment has the same configuration as that of FIG. 1 except that power receiving unit 700 is used instead of power receiving unit 153, and thus the description thereof is omitted.

＜受電部の構成＞
受電部７００は、受電コイル７００ａ及び筐体７００ｂを有する。 <Configuration of power receiving unit>
The power receiving unit 700 includes a power receiving coil 700a and a housing 700b.

受電コイル７００ａは、中空のリング状であり、筐体７００ｂの内天面に接した状態で筐体７００ｂに収納されている。受電コイル７００ａは、例えば金属細線を巻回して形成されている。   The power receiving coil 700a has a hollow ring shape, and is housed in the housing 700b in a state of being in contact with the inner top surface of the housing 700b. The power receiving coil 700a is formed by winding a thin metal wire, for example.

筐体７００ｂは、図１３に示すように中心軸Ｐ１を含む平面で切断した断面が台形状であり、受電コイル７００ａを収納する。筐体７００ｂは、平坦部７０１と傾斜部７０２とを有する。筐体７００ｂは、受電コイル７００ａを給電部１０３の方向に向かって筐体７００ｂに投影した際に、受電コイル７００ａが投影される部分に傾斜部７０２を有する。   The casing 700b has a trapezoidal cross section cut along a plane including the central axis P1 as shown in FIG. 13, and houses the power receiving coil 700a. The housing 700b has a flat portion 701 and an inclined portion 702. The housing 700b includes an inclined portion 702 at a portion where the power receiving coil 700a is projected when the power receiving coil 700a is projected onto the housing 700b in the direction of the power feeding unit 103.

平坦部７０１は、受電コイル７００ａの中空の部分７０３に対向し、かつ受電コイル７００ａの中心軸Ｐ１と交わるとともに、受電コイル７００ａの径方向（中心軸Ｐ１に対して直交する方向）に平坦になるように形成されている。平坦部７０１は、給電を受ける際に給電部１０３に対向する。   The flat portion 701 faces the hollow portion 703 of the power receiving coil 700a, intersects with the central axis P1 of the power receiving coil 700a, and becomes flat in the radial direction of the power receiving coil 700a (a direction orthogonal to the central axis P1). It is formed as follows. The flat portion 701 faces the power supply unit 103 when receiving power supply.

傾斜部７０２は、筐体７００ｂに設けられており、受電コイル７００ａの径方向において平坦部７０１の端部７０４から受電コイル７００ａの外周７１２に向かって受電コイル７００ａに徐々に近づくような傾斜となるように形成されている。傾斜部７０２は、一端が平坦部７０１の端部７０４と接続し、他端が側壁部７０５と接続するように形成されている。   The inclined portion 702 is provided in the housing 700b and is inclined so as to gradually approach the power receiving coil 700a from the end 704 of the flat portion 701 toward the outer periphery 712 of the power receiving coil 700a in the radial direction of the power receiving coil 700a. It is formed as follows. The inclined portion 702 is formed so that one end is connected to the end portion 704 of the flat portion 701 and the other end is connected to the side wall portion 705.

また、傾斜部７０２は、受電コイル７００ａにおける中空の部分７０３の周囲の内縁部７１１と外周７１２との中間部７１３に対向していることが好ましい。その理由は、中間部７１３に対向する部分では、コイルが発生させる磁束に対して異物が平行となり、鎖交する磁束が少なくなるため、他の部分と比べて発熱が小さくなるからである。   Further, the inclined portion 702 is preferably opposed to an intermediate portion 713 between the inner edge 711 and the outer periphery 712 around the hollow portion 703 in the power receiving coil 700a. The reason is that in the portion facing the intermediate portion 713, the foreign matter is parallel to the magnetic flux generated by the coil, and the interlinkage magnetic flux is reduced, so that heat generation is reduced compared to other portions.

＜異物の発熱について＞
図１４は、本実施の形態における給電コイル１０３ａ及び受電コイル７００ａから発生する磁束の様子を示す図である。 <For heat generation from foreign matter>
FIG. 14 is a diagram showing a state of magnetic flux generated from the feeding coil 103a and the receiving coil 700a in the present embodiment.

給電効率を向上させるためには、図１３及び図１４に示すように、給電部１０３と受電部７００とを近づける必要がある。給電部１０３と受電部７００とを近づけた際に、給電部１０３の筐体１０３ｂと受電部７００の筐体７００ｂとの間に異物１４０１が挟まり、筐体７００ｂの傾斜部７０２上に異物１４０１が張り付いたような状態となる可能性がある。   In order to improve the power feeding efficiency, it is necessary to bring the power feeding unit 103 and the power receiving unit 700 close to each other as shown in FIGS. 13 and 14. When the power feeding unit 103 and the power receiving unit 700 are brought close to each other, the foreign matter 1401 is sandwiched between the housing 103b of the power feeding unit 103 and the housing 700b of the power receiving unit 700, and the foreign matter 1401 is formed on the inclined portion 702 of the housing 700b. There is a possibility of sticking.

この場合、本実施の形態では、電部７００に傾斜部７０２を設けたので、傾斜部７０２上に存在する異物１４０１は、受電コイル７００ａの径方向に対して傾斜した状態になる。これにより、図１４に示すように、Ｂ４が異物１４０１を貫く量が小さくなるため、異物１４０１が加熱されて高温度になることを防ぐことができる。   In this case, in this embodiment, since the inclined portion 702 is provided in the electric portion 700, the foreign matter 1401 existing on the inclined portion 702 is inclined with respect to the radial direction of the power receiving coil 700a. As a result, as shown in FIG. 14, the amount of B4 penetrating the foreign matter 1401 is reduced, so that the foreign matter 1401 can be prevented from being heated to a high temperature.

＜筐体の設計＞
図１５は、本実施の形態における給電コイル１０３ａ及び受電コイル７００ａの周辺にできる磁束の分布を示す図である。図１５において、磁束を表している線の長さが長いほど磁場が強いことを示している。また、図１５において、矢印Ｍ１、Ｍ２、Ｍ３、Ｍ４、Ｍ５、Ｍ６は、異物が筐体に載りうる側における磁場の強い位置の磁束の向きを示している。なお、図１５において異物が筐体に載らない側でも磁場の強い位置が存在するが、図１５では異物が筐体に載らない側における矢印の記載を省略している。 <Case design>
FIG. 15 is a diagram showing the distribution of magnetic flux generated around the feeding coil 103a and the receiving coil 700a in the present embodiment. FIG. 15 shows that the magnetic field is stronger as the length of the line representing the magnetic flux is longer. In FIG. 15, arrows M1, M2, M3, M4, M5, and M6 indicate the direction of the magnetic flux at a position where the magnetic field is strong on the side where foreign matter can be placed on the housing. In FIG. 15, there is a position where the magnetic field is strong even on the side where the foreign matter is not placed on the housing, but in FIG. 15, the arrow on the side where the foreign matter is not placed on the housing is omitted.

筐体１０３ｂの傾斜部２０２の傾きは、傾斜部２０２上の異物を通過する磁束が少なくなるように設計されている。また、筐体７００ｂの傾斜部７０２の傾きは、傾斜部７０２上の異物を通過する磁束が少なくなるように設計されている。   The inclination of the inclined portion 202 of the housing 103b is designed so that the magnetic flux passing through the foreign matter on the inclined portion 202 is reduced. In addition, the inclination of the inclined portion 702 of the housing 700b is designed so that the magnetic flux passing through the foreign matter on the inclined portion 702 is reduced.

具体的には、給電コイル１０３ａ及び受電コイル７００ａに流れる電流分布の変化から、マクスウェルの方程式を用いて、給電コイル１０３ａ及び受電コイル７００ａの周辺の空間内の各点の磁束密度の大きさ及び向きを求めることができる。即ち、図１５に示すような磁束の分布を求めることができる。これより、矢印Ｍ４、Ｍ５、Ｍ６に沿って傾斜する傾斜部２０２を有する筐体１０３ａを設計するとともに、矢印Ｍ１、Ｍ２、Ｍ３に沿って傾斜する傾斜部７０２を有する筐体７００ｂを設計する。   Specifically, the magnitude and direction of the magnetic flux density at each point in the space around the power feeding coil 103a and the power receiving coil 700a using Maxwell's equations from the change in the distribution of current flowing in the power feeding coil 103a and the power receiving coil 700a. Can be requested. That is, the distribution of magnetic flux as shown in FIG. 15 can be obtained. Thus, the housing 103a having the inclined portion 202 inclined along the arrows M4, M5, and M6 is designed, and the housing 700b having the inclined portion 702 inclined along the arrows M1, M2, and M3 is designed.

なお、上記実施の形態１〜実施の形態４においても、給電側の筐体は、上記の方法により設計する。   In the first to fourth embodiments, the housing on the power feeding side is designed by the above method.

＜本実施の形態の効果＞
本実施の形態によれば、受電効率を向上させるために受電部と給電部とを近づけた場合においても、受電部に形成された傾斜部上に存在する異物は、受電コイルの径方向に対して傾いた状態になる。これにより、上記の実施の形態１の効果に加えて、給電効率を向上させるために給電部と受電部とを近づける場合においても、異物が加熱されて高温度になることを防ぐことができる。 <Effects of the present embodiment>
According to the present embodiment, even when the power receiving unit and the power feeding unit are brought close to each other in order to improve the power receiving efficiency, the foreign matter present on the inclined portion formed in the power receiving unit is in the radial direction of the power receiving coil. Will be tilted. Thereby, in addition to the effect of the first embodiment, even when the power feeding unit and the power receiving unit are brought close to each other in order to improve the power feeding efficiency, it is possible to prevent the foreign matter from being heated to a high temperature.

＜本実施の形態の変形例＞
本実施の形態において、給電部を図２及び図３と同一構成にしたが、本発明はこれに限らず、給電部を図９〜図１２の何れかと同一構成にすることができる。この際、受電部における傾斜部は、給電部に形成されている傾斜部と対向する位置に設けられる。 <Modification of the present embodiment>
In the present embodiment, the power supply unit has the same configuration as that shown in FIGS. 2 and 3, but the present invention is not limited to this, and the power supply unit can have the same configuration as any one of FIGS. 9 to 12. At this time, the inclined portion in the power receiving unit is provided at a position facing the inclined portion formed in the power feeding unit.

（実施の形態６）
図１６は、本発明の実施の形態６に係る充電システム１２００の構成を示す図である。なお、図１６において、図２及び図１３と同一構成である部分には同一の符号を付してその説明を省略する。また、異物の発熱が抑制される理由は、上記実施の形態５と同様であるので、その説明を省略する。また、本実施の形態における充電システムは、受電部１５３の代わりに受電部７００を用いる以外は図１と同一構成であるので、その説明を省略する。 (Embodiment 6)
FIG. 16 is a diagram showing a configuration of a charging system 1200 according to Embodiment 6 of the present invention. In FIG. 16, parts having the same configuration as in FIGS. 2 and 13 are denoted by the same reference numerals, and description thereof is omitted. Further, the reason why the heat generation of the foreign matter is suppressed is the same as that in the fifth embodiment, and the description thereof is omitted. Further, the charging system in the present embodiment has the same configuration as that of FIG. 1 except that power receiving unit 700 is used instead of power receiving unit 153, and thus the description thereof is omitted.

＜可動部の構成＞
可動部８００は、筐体８０１、モータ８０２及び支柱部８０３ａ、８０３ｂを有している。 <Configuration of movable part>
The movable unit 800 includes a housing 801, a motor 802, and support columns 803a and 803b.

筐体８０１は、地表ｇに設置され、モータ８０２及び支柱部８０３ａ、８０３ｂを収納している。筐体８０１の天面は給電部１０３の底面と接している。   The housing 801 is installed on the ground surface g and houses the motor 802 and the column portions 803a and 803b. The top surface of the housing 801 is in contact with the bottom surface of the power supply unit 103.

モータ８０２は、例えば、商用の電源から電力の供給を受けて、支柱部８０３ａ、８０３ｂを可動させる。   For example, the motor 802 receives power supplied from a commercial power source and moves the column portions 803a and 803b.

支柱部８０３ａは、モータ８０２により時計方向に回転して、筐体８０１を介して給電部１０３を上方に持ち上げる。支柱部８０３ａは、モータ８０２により反時計方向に回転して、筐体８０１を介して給電部１０３を下方に降下させる。   The column portion 803 a is rotated clockwise by the motor 802 to lift the power supply unit 103 upward via the housing 801. The column portion 803 a is rotated counterclockwise by the motor 802 to lower the power supply unit 103 downward via the housing 801.

支柱部８０３ｂは、モータ８０２の駆動力により反時計方向に回転して、筐体８０１を介して給電部１０３を上方に持ち上げる。支柱部８０３ｂは、モータ８０２の駆動力により時計方向に回転して、筐体８０１を介して給電部１０３を下方に降下させる。   The support column 803 b rotates counterclockwise by the driving force of the motor 802 and lifts the power supply unit 103 upward via the housing 801. The column portion 803 b rotates clockwise by the driving force of the motor 802 and lowers the power feeding unit 103 downward via the housing 801.

＜給電部及び可動部の動作＞
可動部８００は、給電部１０３により給電する際には、支柱部８０３ａ、８０３ｂをモータ８０２により可動させることにより、給電部１０３を上方に上昇させる。これにより、給電部１０３と受電部７００とは接近し、効率よく給電することができる。 <Operation of power feeding unit and movable unit>
When power is supplied from the power supply unit 103, the movable unit 800 moves the support units 803 a and 803 b by the motor 802 to raise the power supply unit 103 upward. Thereby, the power feeding unit 103 and the power receiving unit 700 are close to each other, and power can be supplied efficiently.

この際に、給電部１０３の傾斜部２０２と受電部７００の傾斜部７０２との間に挟まった異物は、筐体７００ｂに張り付いたような状態となる可能性がある。従って、給電中に傾斜部２０２と傾斜部７０２との間に挟まった異物が加熱されて高温度になることを防ぐことができる。   At this time, the foreign matter sandwiched between the inclined portion 202 of the power feeding unit 103 and the inclined portion 702 of the power receiving unit 700 may be in a state of sticking to the housing 700b. Accordingly, it is possible to prevent the foreign matter sandwiched between the inclined portion 202 and the inclined portion 702 from being heated and becoming high temperature during power feeding.

一方、可動部８００は、給電部１０３による給電を終了した後に、支柱部８０３ａ、８０３ｂをモータ８０２の駆動力により可動させて、給電部１０３を下方に降下させる。これにより、給電部１０３と受電部７００とは離れて、車輌１５０を安全に移動させることができる。   On the other hand, after the power supply by the power supply unit 103 is finished, the movable unit 800 moves the support columns 803a and 803b by the driving force of the motor 802 to lower the power supply unit 103 downward. As a result, the power feeding unit 103 and the power receiving unit 700 are separated from each other, and the vehicle 150 can be moved safely.

なお、受電側及び給電側の筐体は、上記実施の形態５で説明した方法と同様の方法により設計することができる。   Note that the power reception side and power supply side housings can be designed by a method similar to the method described in the fifth embodiment.

＜本実施の形態の効果＞
本実施の形態によれば、上記の実施の形態１及び実施の形態５の効果に加えて、給電部を可動させるので、異物が加熱されて高温度になることを防いで効率よく給電することができるとともに、給電が終了した後には車輌を安全に移動させることができる。 <Effects of the present embodiment>
According to the present embodiment, in addition to the effects of the first embodiment and the fifth embodiment described above, since the power feeding unit is moved, it is possible to efficiently feed power by preventing foreign matter from being heated to a high temperature. In addition, the vehicle can be moved safely after the power feeding is completed.

＜本実施の形態の変形例＞
本実施の形態において、給電部を図２と同一構成にしたが、本発明はこれに限らず、給電部を図８〜図１０の何れかと同一構成にすることができる。この際、受電部における傾斜部は、給電部に形成されている傾斜部と対向する位置に設けられる。 <Modification of the present embodiment>
In the present embodiment, the power supply unit has the same configuration as that in FIG. 2, but the present invention is not limited to this, and the power supply unit can have the same configuration as that in any of FIGS. 8 to 10. At this time, the inclined portion in the power receiving unit is provided at a position facing the inclined portion formed in the power feeding unit.

＜全ての実施の形態に共通の変形例＞
上記実施の形態１〜実施の形態５において、給電部の筐体の形状または受電部の筐体の形状を円錐の上部を平面で切り取ったような形状にしたが、本発明はこれに限らず、多角錐の上部を平面で切り取ったような形状でもよい。 <Modification common to all embodiments>
In the first to fifth embodiments, the shape of the casing of the power feeding unit or the shape of the casing of the power receiving unit is set to a shape obtained by cutting the upper part of the cone with a plane, but the present invention is not limited thereto. The upper surface of the polygonal pyramid may be cut off by a plane.

また、上記実施の形態１〜実施の形態５において、給電部の筐体の受電部に対向する側の一部または受電部の筐体の給電部に対向する側の一部に傾斜部を設けたが、本発明はこれに限らず、給電部の筐体の受電部に対向する側の全部または受電部の筐体の給電部に対向する側の全部に傾斜部を設けてもよい。給電部の筐体の受電部に対向する側の全部または受電部の筐体の給電部に対向する側の全部に傾斜部を設けることにより、異物が加熱されて高温度になることを確実に防ぐことができる。   In the first to fifth embodiments, an inclined portion is provided on a part of the power supply unit on the side facing the power receiving unit or a part of the power receiving unit on the side facing the power feeding unit. However, the present invention is not limited to this, and an inclined portion may be provided on the entire side of the power feeding unit facing the power receiving unit or the entire side of the power receiving unit facing the power feeding unit. By providing inclined parts on all sides of the power supply unit facing the power receiving unit or all sides of the power receiving unit facing the power feeding unit, it is ensured that the foreign matter is heated to a high temperature. Can be prevented.

本発明にかかる給電装置、受電装置及び給電システムは、車輌に設けられた受電部に対して非接触で給電するのに好適である。   The power supply device, the power reception device, and the power supply system according to the present invention are suitable for supplying power in a non-contact manner to a power reception unit provided in a vehicle.

１０３ 給電部
１０３ａ 給電コイル
１０３ｂ 筐体
１５３ 受電部
２０１ 平坦部
２０２ 傾斜部
２０３ 中空の部分
２０４ 端部
２０５ 側壁部
２１１ 内縁部
２１２ 外周
２１３ 中間部 DESCRIPTION OF SYMBOLS 103 Feed part 103a Feed coil 103b Case 153 Power receiving part 201 Flat part 202 Inclined part 203 Hollow part 204 End part 205 Side wall part 211 Inner edge part 212 Outer periphery 213 Intermediate part

Claims (8)

車輌に設けられた受電部に対して非接触で給電する給電装置であって、
前記受電部の受電コイルに対して給電する中空のリング状の給電コイルと、
前記給電コイルを収納する筐体と、
を具備し、
前記筐体は、
前記給電コイルの中心軸と交わるとともに前記給電コイルの径方向に平坦な平坦部と、
前記平坦部の端部から前記給電コイルの外周に向かって徐々に前記給電コイルに近づくように傾斜する傾斜部と、
を有し、
前記平坦部は、前記給電コイルの中空部を前記給電コイルの中心軸方向に前記筐体に投影してなる第１投影領域の少なくとも一部にかけて形成され、
前記傾斜部は、前記給電コイルを前記給電コイルの中心軸方向に前記筐体に投影してなる第２投影領域の少なくとも一部にかけて形成され、
平面を有する異物が前記傾斜部の上に前記平面で接して存在する場合、前記傾斜部は、前記異物の平面が前記給電コイルの径方向に対して所定の角度で傾斜した状態にする、
給電装置。 A power supply device for feeding a non-contact manner with respect to the power receiving portion provided in the vehicle,
A hollow ring-shaped power feeding coil that feeds power to the power receiving coil of the power receiving unit;
A housing for housing the feeding coil;
Comprising
The housing is
A flat portion that intersects with the central axis of the feeding coil and is flat in the radial direction of the feeding coil;
An inclined part that inclines so as to gradually approach the power supply coil from the end of the flat part toward the outer periphery of the power supply coil ;
I have a,
The flat portion is formed over at least a part of a first projection region formed by projecting the hollow portion of the power supply coil onto the housing in the central axis direction of the power supply coil,
The inclined portion is formed over at least a part of a second projection region formed by projecting the power feeding coil onto the housing in the central axis direction of the power feeding coil,
When a foreign object having a flat surface is present on the inclined portion in contact with the flat surface, the inclined portion is in a state where the flat surface of the foreign material is inclined at a predetermined angle with respect to the radial direction of the feeding coil.
Power supply device. 前記傾斜部は、前記給電コイルの内縁と外周との中間の円を前記給電コイルの中心軸方向に前記筐体に投影してなる円を含むように形成される、
請求項１記載の給電装置。 The inclined portion is formed so as to include a circle formed by projecting an intermediate circle between the inner edge and the outer periphery of the feeding coil onto the housing in the central axis direction of the feeding coil.
The power feeding device according to claim 1. 前記平坦部の径は、前記給電コイルの中空部の径より大きく、前記給電コイルの内縁と外周との中間の円の径より小さい、
請求項１記載の給電装置。 The diameter of the flat part is larger than the diameter of the hollow part of the power supply coil and smaller than the diameter of the circle between the inner edge and the outer periphery of the power supply coil.
The power feeding device according to claim 1. 前記給電コイルの径方向に平坦な外周部を有し、It has a flat outer periphery in the radial direction of the feeding coil,
前記外周部の一端が前記傾斜部と接続されるOne end of the outer peripheral part is connected to the inclined part
請求項１記載の給電装置。The power feeding device according to claim 1. 車輌に設けられ、給電部から非接触で給電を受ける受電装置であって、
前記給電部の給電コイルから給電を受ける中空のリング状の受電コイルと、
前記受電コイルを収納する筐体と、
を具備し、
前記筐体は、
前記受電コイルの中心軸と交わるとともに前記受電コイルの径方向に平坦な平坦部と、
前記平坦部の端部から前記受電コイルの外周に向かって徐々に前記受電コイルに近づくように傾斜する傾斜部と、
を有し、
前記平坦部は、前記受電コイルの中空部を前記受電コイルの中心軸方向に前記筐体に投影してなる第１投影領域の少なくとも一部にかけて形成され、
前記傾斜部は、前記受電コイルを前記受電コイルの中心軸方向に前記筐体に投影してなる第２投影領域の少なくとも一部にかけて形成される、
受電装置。 A power receiving device provided in a vehicle and receiving power without contact from a power feeding unit,
A hollow ring-shaped power receiving coil that receives power from the power feeding coil of the power feeding unit;
A housing for housing the power receiving coil;
Comprising
The housing is
A flat portion that intersects the central axis of the power receiving coil and is flat in the radial direction of the power receiving coil;
An inclined portion that inclines so as to gradually approach the power receiving coil from the end of the flat portion toward the outer periphery of the power receiving coil ;
I have a,
The flat portion is formed over at least a part of a first projection region formed by projecting the hollow portion of the power receiving coil onto the housing in the central axis direction of the power receiving coil,
The inclined portion is formed over at least a part of a second projection region formed by projecting the power receiving coil onto the housing in the central axis direction of the power receiving coil.
Power receiving device. 前記傾斜部は、前記受電コイルの内縁と外周との中間の円を前記受電コイルの中心軸方向に前記筐体に投影してなる円を含むように形成される、
請求項５記載の受電装置。 The inclined portion is formed to include a circle formed by projecting an intermediate circle between the inner edge and the outer periphery of the power receiving coil onto the housing in the central axis direction of the power receiving coil.
The power receiving device according to claim 5 . 前記平坦部の径は、前記受電コイルの中空部の径より大きく、前記受電コイルの内縁と外周との中間の円の径より小さい、The diameter of the flat portion is larger than the diameter of the hollow portion of the power receiving coil and smaller than the diameter of the circle between the inner edge and the outer periphery of the power receiving coil.
請求項５記載の受電装置。The power receiving device according to claim 5. 車輌に設けられた受電装置と、前記受電装置に対して非接触で給電する給電装置とを具備する給電システムであって、
前記受電装置は、
前記給電装置の給電コイルから給電を受ける中空のリング状の受電コイルと、
前記受電コイルを収納する受電側筐体と、
を具備し、
前記給電装置は、
前記受電装置の受電コイルに対して給電する中空のリング状の給電コイルと、
前記給電コイルを収納する給電側筐体と、
を具備し、
前記受電側筐体は、
前記受電コイルの中心軸と交わるとともに前記受電コイルの径方向に平坦な受電側平坦部と、
前記受電側平坦部の端部から前記受電コイルの外周に向かって徐々に前記受電コイルに近づくように傾斜する受電側傾斜部と、
を有し、
前記受電側平坦部は、前記受電コイルの中空部を前記受電コイルの中心軸方向に前記筐体に投影してなる第１投影領域の少なくとも一部にかけて形成され、
前記受電側傾斜部は、前記受電コイルを前記受電コイルの中心軸方向に前記筐体に投影してなる第２投影領域の少なくとも一部にかけて形成され、
前記給電側筐体は、
前記給電コイルの中心軸と交わるとともに前記給電コイルの径方向に平坦な給電側平坦部と、
前記給電側平坦部の端部から前記給電コイルの外周に向かって徐々に前記給電コイルに近づくように傾斜する給電側傾斜部と、
を有し、
前記給電側平坦部は、前記給電コイルの中空部を前記給電コイルの中心軸方向に前記筐体に投影してなる第３投影領域の少なくとも一部にかけて形成され、
前記給電側傾斜部は、前記給電コイルを前記給電コイルの中心軸方向に前記筐体に投影してなる第４投影領域の少なくとも一部にかけて形成される、
給電システム。 A power supply system comprising a power reception device provided in a vehicle and a power supply device that supplies power to the power reception device in a contactless manner,
The power receiving device is:
A hollow ring-shaped power receiving coil that receives power from the power feeding coil of the power feeding device;
A power receiving side housing for storing the power receiving coil;
Comprising
The power supply device
A hollow ring-shaped power feeding coil that feeds power to the power receiving coil of the power receiving device;
A power supply side housing for storing the power supply coil;
Comprising
The power receiving side housing is:
A power receiving side flat portion that intersects with the central axis of the power receiving coil and is flat in the radial direction of the power receiving coil;
A power receiving side inclined portion that is inclined so as to gradually approach the power receiving coil from an end portion of the power receiving side flat portion toward an outer periphery of the power receiving coil ;
Have
The power receiving side flat portion is formed over at least a part of a first projection region formed by projecting the hollow portion of the power receiving coil onto the housing in the central axis direction of the power receiving coil,
The power receiving side inclined portion is formed over at least a part of a second projection region formed by projecting the power receiving coil on the casing in the central axis direction of the power receiving coil,
The power supply side housing is
A feeding-side flat portion that intersects the central axis of the feeding coil and is flat in the radial direction of the feeding coil;
A power feeding side inclined portion that inclines so as to gradually approach the power feeding coil from an end of the power feeding side flat portion toward an outer periphery of the power feeding coil ;
I have a,
The power supply side flat portion is formed over at least a part of a third projection region formed by projecting the hollow portion of the power supply coil onto the housing in the central axis direction of the power supply coil,
The power supply side inclined portion is formed over at least a part of a fourth projection region formed by projecting the power supply coil onto the casing in the central axis direction of the power supply coil.
Power supply system.
JP2012057152A 2012-03-14 2012-03-14 Power feeding device, power receiving device, and power feeding system Active JP5270015B1 (en)

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EP13761323.8A EP2827473A4 (en) 2012-03-14 2013-03-13 Electricity supply device, electricity reception device, and electricity supply system
US14/384,214 US9895988B2 (en) 2012-03-14 2013-03-13 Electricity supply device, electricity reception device, and electricity supply system
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