JP6756381B2 - 駐車支援方法及び駐車支援装置 - Google Patents
駐車支援方法及び駐車支援装置 Download PDFInfo
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Description
[非接触給電システム]
先ず、図1を参照して、実施形態に係わる駐車支援方法及び駐車支援装置を適用する非接触給電システムについて説明する。なお、図1は、非接触給電システムの概略を示す模式図であり、X軸及びY軸を含むXY平面を水平面とし、Z軸方向を当該水平面に鉛直な方向とする3次元空間の直交座標系を規定する。
次に、非接触給電システムに適用する実施形態に係わる駐車支援装置について説明する。上記した非接触給電を行うためには、地上側コイル12に対する車両2の位置、詳細には、車両側コイル11の位置を予め合わせる必要がある。駐車支援装置は、駐車支援装置のユーザである車両2の乗員が行う、コイル間の位置あわせ操作、即ち駐車操作を支援する。換言すれば、実施形態に係わる駐車支援方法及び駐車支援装置は、車両2に搭載された受電コイル(車両側コイル11)に対して非接触で給電する前に、送電コイル(地上側コイル12)が設けられた駐車スペースに車両2を駐車する際のコイル間の位置合わせを支援する。
図6A〜図6Cを用いて、駐車支援装置を用いた駐車支援方法の一例を説明する。先ず、図6Aを参照して、非接触給電を開始する前の動作を説明する。図6Aのフローチャートは、駐車を支援する時の動作のみならず、駐車を支援する前のコイル間の位置合わせ時の動作にも対応している。
第1の実施形態では、前回の給電時におけるギャップ変動を考慮して、次回の給電時のコイル位置合わせを支援する例を示した。つまり、参照するギャップ変動は前回の値1つだけであったが、過去に行った複数の給電動作を考慮してコイル位置合わせを支援しても構わない。
第2の実施形態の変形例では、表示部5(LED)の代わりに、第1の実施形態と同様に、車両2のダッシュボードに搭載されたディスプレイを用いて、位置NG画像或いは位置OK画像を表示する例を説明する。
4 車両コントローラ(制御部)
8 電流/電圧センサ(電圧センサ)
11 車両側コイル(受電コイル)
12 地上側コイル(送電コイル)
32 第2の矢印(第2の基準値)
33 第3の矢印(第2の基準値)
NOW 第1の受電電圧
Vgap 電位差
Vgap_ave 電位差の平均値
Vgap_max 電位差の最大値
Vt0 第2の受電電圧
Vt1 第3の受電電圧
V0 最小許容電圧
Claims (7)
- 車両に搭載された受電コイルに対して非接触で給電する送電コイルが設けられた駐車スペースに前記車両を駐車する際のコイル間の位置合わせを支援する駐車支援方法であって、
前記コイル間の位置合わせを目的とする励磁であるコイル位置検知用励磁を行っている時に、前記受電コイルに生じる第1の受電電圧を測定し、
予め求めた電位差及び前記第1の受電電圧に基づいて給電可能か否かを判断した結果を前記車両の乗員に対して提示することにより、前記コイル間の位置合わせを支援し、
前記予め求めた電位差は、
前記コイル間の位置合わせを支援する以前のコイル間の位置合わせの際に前記コイル位置検知用励磁を行っている時に測定した前記受電コイルの第2の受電電圧と、前記位置合わせ及び給電が終了した後に前記コイル位置検知用励磁を行っている時に測定した前記受電コイルの第3の受電電圧との電位差である
ことを特徴とする駐車支援方法。 - 前記送電コイルがコイル位置を検知するために励磁されたときに前記受電コイルに生じる前記第1の受電電圧を測定し、
前記第1の受電電圧と、前記受電コイルに生じる電圧であって前記受電コイルと前記送電コイルとの鉛直方向のギャップの変動が無ければ給電可能と判断できる最も小さな前記電圧に前記電位差を加算した第1の基準値とを比較した結果を乗員に対して提示することにより、前記コイル間の位置合わせを支援する
ことを特徴とする請求項1に記載の駐車支援方法。 - 前記送電コイルがコイル位置を検知するために励磁されたときに前記受電コイルに生じる前記第1の受電電圧を測定し、
前記第1の受電電圧から前記電位差を減算した第2の基準値と、前記受電コイルに生じる電圧であって前記受電コイルと前記送電コイルとの鉛直方向のギャップの変動が無ければ給電可能と判断できる最も小さな前記電圧とを比較した結果を乗員に対して提示することにより、前記コイル間の位置合わせを支援する
ことを特徴とする請求項1に記載の駐車支援方法。 - 前記コイル間の位置合わせを支援する以前に、前記第2の受電電圧と前記第3の受電電圧との対を複数回測定し、
前記予め求めた電位差は、測定された複数の前記対の電位差の平均値である
ことを特徴とする請求項1〜3のいずれか一項に記載の駐車支援方法。 - 前記コイル間の位置合わせを支援する以前に、前記第2の受電電圧と前記第3の受電電圧との対を複数回測定し、
前記予め求めた電位差は、測定された複数の前記対の電位差の最大値である
ことを特徴とする請求項1〜3のいずれか一項に記載の駐車支援方法。 - 前記コイル間の位置合わせを支援する際に、次回の前記コイル間の位置合わせを支援する時に使用する前記第2の受電電圧を測定することを特徴とする請求項1〜5のいずれか一項に記載の駐車支援方法。
- 車両に搭載された受電コイルに対して非接触で給電する送電コイルが設けられた駐車スペースに前記車両を駐車する際のコイル間の位置合わせを支援する駐車支援装置であって、
前記コイル間の位置合わせを目的とする励磁であるコイル位置検知用励磁を行っている時に、前記受電コイルに生じる第1の受電電圧を測定する電圧センサと、
予め求めた電位差及び前記第1の受電電圧に基づいて給電可能か否かを判断した結果を前記車両の乗員に対して提示することにより、前記コイル間の位置合わせを支援する制御部と、を備え、
前記予め求めた電位差は、
前記コイル間の位置合わせを支援する以前のコイル間の位置合わせの際に前記コイル位置検知用励磁を行っている時に測定した前記受電コイルの第2の受電電圧と、前記位置合わせ及び給電が終了した後に前記コイル位置検知用励磁を行っている時に測定した前記受電コイルの第3の受電電圧との電位差である
ことを特徴とする駐車支援装置。
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