JP5114371B2 - 非接触電力伝送装置 - Google Patents
非接触電力伝送装置 Download PDFInfo
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- 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
- B60L53/60—Monitoring or controlling charging stations
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
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- 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
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- B60—VEHICLES IN GENERAL
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- 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
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- B60L2210/00—Converter types
- B60L2210/40—DC to AC converters
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- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- 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
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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- 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
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- 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
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
- Y02T90/167—Systems integrating technologies related to power network operation and communication or information technologies for supporting the interoperability of electric or hybrid vehicles, i.e. smartgrids as interface for battery charging of electric vehicles [EV] or hybrid vehicles [HEV]
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- 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
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- Y04S30/00—Systems supporting specific end-user applications in the sector of transportation
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Description
NIKKEI ELECTRONICS 2007.12.3 117頁〜128頁
以下、本発明を具体化した第1の実施形態を図面にしたがって説明する。
図1は、非接触電力伝送装置10の構成を模式的に示す。図1に示すように、非接触電力伝送装置10は、交流電源11と、交流電源11に接続された1次コイル12と、1次側共鳴コイル13と、2次側共鳴コイル14と、2次コイル15と、2次コイル15に接続された負荷16と、交流電源11と1次コイル12との間に設けられたインピーダンス可変回路17とを備えている。1次側共鳴コイル13及び2次側共鳴コイル14にはそれぞれコンデンサ18,19が並列に接続されている。1次コイル12、1次側共鳴コイル13、2次側共鳴コイル14、2次コイル15、負荷16及びコンデンサ18,19は共鳴系20を構成する。
1次コイル12、1次側共鳴コイル13、2次側共鳴コイル14及び2次コイル15は電線により形成されている。コイルを構成する電線には、例えば、絶縁ビニル被覆線が使用される。コイルの巻径や巻数は、伝送しようとする電力の大きさ等に対応して適宜設定される。この実施形態では1次コイル12、1次側共鳴コイル13、2次側共鳴コイル14及び2次コイル15は、同じ巻径に形成されている。1次側共鳴コイル13及び2次側共鳴コイル14は同じに形成され、各コンデンサ18,19として同じコンデンサが使用されている。
2次電池31への充電時には、移動体30が充電装置32の近くの充電位置に停止した状態で充電が行われる。移動体30が充電位置に停止すると、距離センサ33が移動体30との距離を測定する。制御装置24は、距離センサ33の出力信号を入力して、距離センサ33の測定結果から1次側共鳴コイル13と2次側共鳴コイル14との距離を演算する。制御装置24は、演算された距離に適した可変コンデンサ21,22の容量をメモリ36に記憶されたデータから決定する。次に制御装置24は、可変コンデンサ21,22の容量を充電時における適切な容量に変更するように可変コンデンサ21,22に駆動信号を出力する。そして、可変コンデンサ21,22の容量が共鳴コイル間の距離に適した値に変更される。
(1)非接触電力伝送装置10は、交流電源11と、交流電源11に接続された1次コイル12と、1次側共鳴コイル13と、2次側共鳴コイル14と、2次コイル15と、2次コイル15に接続された負荷16と、交流電源11と1次コイル12との間に設けられたインピーダンス可変回路17とを備える。1次コイル12、1次側共鳴コイル13、2次側共鳴コイル14、2次コイル15及び負荷16は共鳴系20を構成する。また、非接触電力伝送装置10は共鳴系20の状態を検出する状態検出手段(距離センサ33)を備え、インピーダンス可変回路17は、状態検出手段の検出結果に基づいて共鳴系20の共鳴周波数における入力インピーダンスZinと、1次コイル12より交流電源11側のインピーダンスとが合うようにインピーダンスが調整される。したがって、2つの共鳴コイル13,14間の距離や負荷16の少なくとも一方が共鳴周波数を設定する際に基準とした値から変化した場合、交流電源11の交流出力電圧の周波数を変更しなくても、交流電源への反射電力を低減して、交流電源11から電力を効率良く負荷16に供給することができる。
次に第2の実施形態を図4にしたがって説明する。この実施形態では、充電時に移動体30は充電装置32との距離が決められた位置で停止し、1次側共鳴コイル13と2次側共鳴コイル14との距離は一定で、負荷16の大きさが変化することにより共鳴系20の入力インピーダンスZinが変化する場合に対応するように構成されている点が前記第1の実施形態と異なっている。即ち、状態検出手段として距離測定手段は備えず、負荷の大きさを検出する負荷検出手段を備えている。第1の実施形態と基本的に同一部分は同一符号を付して詳しい説明を省略する。
(5)状態検出手段として負荷16の大きさを検出する負荷検出手段(充電量センサ37)を備え、インピーダンス可変回路17は、負荷検出手段の検出結果に基づいてインピーダンスが調整される。したがって、非接触で電力伝送中に負荷16の変化によって共鳴系20の入力インピーダンスZinが変化した場合でも、交流電源11の交流出力電圧の周波数を変更しなくても、交流電源11への反射電力を低減して、交流電源11から電力を効率良く負荷16に供給することができる。
○ 第2の実施形態において、充電装置32に距離センサ33を設け、充電時の移動体30の停止位置と、充電時における2次電池31の負荷の変化とを考慮してインピーダンス可変回路17のインピーダンスを調整する構成としてもよい。この構成では、第2の実施形態と異なり、充電時に移動体30を充電装置32との距離が一定となる所定の位置に停止しなくても、充電時に共鳴系20の入力インピーダンスZinが変化した場合に、充電が適正な条件で行われるようにインピーダンス可変回路17のインピーダンスが調整される。
○ 1次コイル12、1次側共鳴コイル13、2次側共鳴コイル14及び2次コイル15の外形は、円形に限らず、例えば、四角形や六角形や三角形等の多角形にしたり、あるいは楕円形にしたりしてもよい。
○ 電線は断面円形の一般的な銅線に限らず、矩形断面の板状の銅線であってもよい。
○ 1次側共鳴コイル13及び2次側共鳴コイル14は、電線が筒状に巻回されたコイルに限らず、例えば、電線が一平面上に巻回された形状としてもよい。
以下の技術的思想(発明)は前記実施形態から把握できる。
Claims (3)
- 交流電源と、
前記交流電源に接続された1次コイルと、
1次側共鳴コイルと、
2次側共鳴コイルと、
2次コイルと、
前記2次コイルに接続された負荷と、
前記交流電源と前記1次コイルとの間に設けられたインピーダンス可変回路とを備え、
前記1次コイル、前記1次側共鳴コイル、前記2次側共鳴コイル、前記2次コイル及び前記負荷は共鳴系を構成し、
前記共鳴系の状態を検出する状態検出手段を備え、前記インピーダンス可変回路は、前記状態検出手段の検出結果に基づいて前記共鳴系の共鳴周波数における入力インピーダンスと、前記1次コイルより前記交流電源側のインピーダンスとが合うようにインピーダンスが調整されることを特徴とする非接触電力伝送装置。 - 前記状態検出手段は、前記1次側共鳴コイルと前記2次側共鳴コイルとの距離を測定する距離測定手段であり、前記インピーダンス可変回路は、前記距離測定手段の測定結果に基づいてインピーダンスが調整される請求項1に記載の非接触電力伝送装置。
- 前記状態検出手段は、前記負荷の大きさを検出する負荷検出手段であり、前記インピーダンス可変回路は、前記負荷検出手段の検出結果に基づいてインピーダンスが調整される請求項1に記載の非接触電力伝送装置。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
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JP2008313632A JP5114371B2 (ja) | 2008-12-09 | 2008-12-09 | 非接触電力伝送装置 |
US13/133,328 US20110241440A1 (en) | 2008-12-09 | 2009-12-04 | Non-contact power transmission apparatus and power transmission method using a non-contact power transmission apparatus |
EP09831867A EP2357717A1 (en) | 2008-12-09 | 2009-12-04 | Non-contact power transmission apparatus and power transmission method using a non-contact power transmission apparatus |
CN2009801487017A CN102239622A (zh) | 2008-12-09 | 2009-12-04 | 非接触电力传输装置及非接触电力传输装置中的电力传输方法 |
KR1020117012301A KR101248453B1 (ko) | 2008-12-09 | 2009-12-04 | 비접촉 전력 전송 장치 및 비접촉 전력 전송 장치에 있어서의 전력 전송 방법 |
PCT/JP2009/070416 WO2010067763A1 (ja) | 2008-12-09 | 2009-12-04 | 非接触電力伝送装置及び非接触電力伝送装置における電力伝送方法 |
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JP2008313632A JP5114371B2 (ja) | 2008-12-09 | 2008-12-09 | 非接触電力伝送装置 |
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JP5114371B2 true JP5114371B2 (ja) | 2013-01-09 |
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