JP5991372B2 - 送電装置、受電装置、車両、および非接触給電システム - Google Patents
送電装置、受電装置、車両、および非接触給電システム Download PDFInfo
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- JP5991372B2 JP5991372B2 JP2014514327A JP2014514327A JP5991372B2 JP 5991372 B2 JP5991372 B2 JP 5991372B2 JP 2014514327 A JP2014514327 A JP 2014514327A JP 2014514327 A JP2014514327 A JP 2014514327A JP 5991372 B2 JP5991372 B2 JP 5991372B2
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (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)
Description
(非接触給電システムの構成)
図1は、本発明の実施の形態1に従う車両給電システム(非接触給電システム)10の全体構成図である。図1を参照して、車両給電システム10は、複数の送電機器200A,200B,200Cを含む送電装置20と、車両100A,100Bとを備える。
図3は、送電機器200から車両100への電力伝送時の等価回路図である。図3を参照して、送電機器200の送電部220は、共振コイル221と、キャパシタ222と、電磁誘導コイル223とを含む。
f2=1/{2π(Lr×C2)1/2} … (2)
ここで、インダクタンスLrおよびキャパシタンスC1,C2を固定して、インダクタンスLtのみを変化させた場合において、第2コイル93および第3コイル96の固有周波数のズレと電力伝送効率との関係を図5に示す。なお、このシミュレーションにおいては、共振コイル94および共振コイル99の相対的な位置関係は固定とし、さらに、第2コイル93に供給される電流の周波数は一定である。
図5から明らかなように、固有周波数のズレ(%)が0%の場合には、電力伝送効率は100%近くとなる。固有周波数のズレ(%)が±5%の場合には、電力伝送効率は40%程度となる。固有周波数のズレ(%)が±10%の場合には、電力伝送効率は10%程度となる。固有周波数のズレ(%)が±15%の場合には、電力伝送効率は5%程度となる。すなわち、固有周波数のズレ(%)の絶対値(固有周波数の差)が、第3コイル96の固有周波数の10%以下の範囲となるように第2コイル93および第3コイル96の固有周波数を設定することで、電力伝送効率を実用的なレベルに高めることができることがわかる。さらに、固有周波数のズレ(%)の絶対値が第3コイル96の固有周波数の5%以下となるように第2コイル93および第3コイル96の固有周波数を設定すると、電力伝送効率をさらに高めることができるのでより好ましい。なお、シミュレーションソフトしては、電磁界解析ソフトウェア(JMAG(登録商標):株式会社JSOL製)を採用している。
上述のような非接触で電力を伝達する車両給電システムにおいては、送電機器と車両との間の電力伝達のための有線接続を行なわない。そのため、多くの場合、送電機器と車両との間の情報伝達についても無線通信を用いて行なわれ、送電機器および車両において、無線通信によって得た情報に基づいて、互いに認証が行なわれる。
実施の形態1においては、複数の送電機器の各々が、独立して送電動作の制御および車両や他の送電機器との通信を行なう場合を例として説明した。
実施の形態1,2においては、送電装置がペアリングの異常を判定する構成について説明した。
Claims (17)
- 受電装置(100A,100B)へ非接触で電力を供給する送電装置であって、
受電装置へ非接触で電力を供給することが可能な送電部(220A,220B,220C)と、
受電装置と無線通信するための通信部(230A,230B,230C)と、
前記送電部を制御するための制御装置(30,30B,240)とを備え、
前記制御装置は、前記送電部が送電を実行している間に、前記送電部からの送電電力を変化させたときの、前記通信部による無線通信において送電対象として特定された受電装置からの情報に基づいて、前記特定された受電装置が前記送電部から送電されるべき受電装置であるか否かを判定する、送電装置。 - 前記制御装置は、前記特定された受電装置から、前記送電電力の変化に対応する情報を受信した場合は、前記特定された受電装置が前記送電部から送電されるべき受電装置であると判定する、請求項1に記載の送電装置。
- 前記制御装置は、前記特定された受電装置から、前記送電電力の変化に対応する情報が受信されない場合は、前記特定された受電装置が前記送電部から送電されるべき受電装置ではないと判定する、請求項1に記載の送電装置。
- 前記制御装置は、前記送電部からの送電電力を変化させた場合に、前記通信部において送電対象として特定されていない他の受電装置から、前記送電電力の変化に起因する情報が受信された場合は、前記他の受電装置が前記送電部から送電されるべき受電装置であると判定する、請求項3に記載の送電装置。
- 前記送電装置は、前記送電部とは異なる他の送電部をさらに備え、
前記制御装置は、前記送電部における送電に関する情報を記憶し、
前記制御装置は、前記他の受電装置が前記送電部から送電されるべき受電装置であると判定した場合であって、前記他の送電部から前記特定された受電装置へ送電がされていたときには、記憶している前記送電部における送電に関する情報を、前記他の送電部における送電に関する情報と入換える、請求項4に記載の送電装置。 - 前記制御装置は、電流および電圧の少なくとも一方を変化させることによって、前記送電電力を変更する、請求項1に記載の送電装置。
- 受電装置は、前記送電装置からの電力を非接触で受電する受電部(110A,110B)を含み、
前記送電部の固有周波数と前記受電部の固有周波数との差は、前記送電部の固有周波数または前記受電部の固有周波数の±10%以下である、請求項1に記載の送電装置。 - 受電装置は、前記送電装置からの電力を非接触で受電する受電部(110A,110B)を含み、
前記送電部と前記受電部との結合係数は0.1以下である、請求項1に記載の送電装置。 - 受電装置は、前記送電装置からの電力を非接触で受電する受電部(110A,110B)を含み、
前記受電部は、前記受電部と前記送電部との間に形成される特定の周波数で振動する磁界、および、前記受電部と前記送電部との間に形成される特定の周波数で振動する電界の少なくとも一方を通じて、前記送電部から受電する、請求項1に記載の送電装置。 - 受電装置(100A,100B)へ非接触で電力を供給する送電装置であって、
第1および第2の送電部(220A,220B,220C)と、
前記第1および第2の送電部をそれぞれ制御する第1および第2の制御部(240)と、
前記第1および第2の制御部を統括的に制御する制御装置(30)とを備え、
前記制御装置は、受電装置と通信するための通信部(31)を含み、
前記制御装置は、前記第1の送電部が送電を実行している間に、前記第1の送電部からの送電電力を変化させた場合に、前記通信部による無線通信において前記第1の送電部の送電対象として特定された受電装置からの情報に基づいて、前記特定された受電装置が前記第1の送電部から送電されるべき受電装置であるか否かを判定する、送電装置。 - 送電装置(20,20A,20B)からの電力を非接触で受電する受電装置であって、
送電装置と無線通信を行なう通信部(160A,160B)と、
制御装置(300)とを備え、
前記制御装置は、電力を受電している間に、送電電力を変化させるための要求を、前記通信部による無線通信において前記受電装置に送電を行なう送電装置として特定された送電装置へ提供し、前記要求に対する前記受電装置における受電電力の変化に基づいて、前記特定された送電装置が前記受電装置に送電するべき送電装置であるか否かを判定する、受電装置。 - 前記制御装置は、前記受電電力の変化が前記要求に対応したものである場合に、前記特定された送電装置が前記受電装置に送電するべき送電装置であると判定する、請求項11に記載の受電装置。
- 送電装置の送電部(220A,220B,220C)から非接触で電力を受電する受電部(110A,110B)をさらに備え、
前記送電部の固有周波数と前記受電部の固有周波数との差は、前記送電部の固有周波数または前記受電部の固有周波数の±10%以下である、請求項11に記載の受電装置。 - 送電装置の送電部(220A,220B,220C)から非接触で電力を受電する受電部(110A,110B)をさらに備え、
前記送電部と前記受電部との結合係数は0.1以下である、請求項11に記載の受電装置。 - 送電装置の送電部(220A,220B,220C)から非接触で電力を受電する受電部(110A,110B)をさらに備え、
前記受電部は、前記受電部と前記送電部との間に形成される特定の周波数で振動する磁界、および、前記受電部と前記送電部との間に形成される特定の周波数で振動する電界の少なくとも一方を通じて、前記送電部から受電する、請求項11に記載の受電装置。 - 請求項11に記載の受電装置と、
前記受電装置で受電した電力を充電可能な蓄電装置(190)と、
前記蓄電装置からの電力を用いて走行駆動力を発生するための駆動装置(155)とを備える、車両。 - 非接触で電力を伝達する非接触給電システム(10,10A,10B)であって、
送電装置(20,20A,20B)と、
前記送電装置からの電力を非接触で受電可能な車両(100A,100B)とを備え、
前記送電装置と前記車両とは、互いに無線通信が可能に構成され、
前記送電装置は、
前記車両に非接触で電力を供給することが可能な送電部(220A,220B,220C)と、
前記送電部を制御するための制御装置(30,30B,240)とを含み、
前記制御装置は、前記送電部が送電を実行している間に、前記送電部からの送電電力を変化させたときに、無線通信によって送電対象として特定された車両からの情報に基づいて、前記特定された車両が前記送電部から送電されるべき車両であるか否かを判定する、非接触給電システム。
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