JP2020127296A - 車両の制御装置およびそれを備えた車両ならびに車両の制御方法 - Google Patents
車両の制御装置およびそれを備えた車両ならびに車両の制御方法 Download PDFInfo
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Abstract
Description
上記(5)の構成によれば、充電器が通信シーケンスに準拠していない場合でもあっても蓄電装置を充電できる可能性を高めること可能な車両を提供することができる。
<充電システムの全体構成>
図1は、本開示の実施の形態に係る充電システムの全体構成を概略的に示す図である。図1を参照して、充電システム100は、車両1と、充電器2と、充電ケーブル3とを備える。図1には、車両1と充電器2とが充電ケーブル3により電気的に接続され、充電器2から車両1への外部充電時の状況が示されている。
外部充電制御では、車両1と充電器2との間でのメッセージの授受に関する通信シーケンスが進められるとともに、車両1と充電器2との間で電力の授受に関する充電シーケンスが進められる。通信シーケンスおよび充電シーケンスは、いずれも急速充電の充電規格(新規格)に規定されている。以下では通信シーケンスの一例を概略的に説明する。
図4は、充電中止メッセージCSTのデータフィールドの構造(フォーマット)の一例を示す図である。図4を参照して、充電中止メッセージCSTのデータフィールド(いわばメッセージの中身)は、たとえば4バイトのバイト長を有し、以下のような内容を表す。
図6は、比較例における充電中止メッセージCSTの受信時の処理を説明するための概念図である。図6を参照して、比較例における充電器8は、通信シーケンスに規定された内容とは異なる内容を表すデータフィールドを含む充電中止メッセージCSTを車両9に送信する。たとえば図4に示した例では、第1ビットおよび第2ビットの両方が1であって未定義のフィールドCST1を含む充電中止メッセージCSTが送信される。
図7は、本実施の形態における充電中止メッセージCSTの受信時の処理を説明するための概念図である。図7を参照して、本実施の形態においても比較例と同様に、充電器8は、通信シーケンスに規定された内容とは異なる内容を表すデータフィールドを車両1に送信する。
図11は、本実施の形態における外部充電制御の通信シーケンスを示すフローチャートである。図11を参照して、このフローチャートは、車両1と充電器8(充電器2であってもよい)とが充電ケーブル3により接続された状態で低圧電源が投入され、車両1と充電器8との間のCAN通信等が可能となった場合に実行される。各ステップ(以下、ステップをSと略す)は、ECU10によるソフトウェア処理により実現されるが、ECU10内に作製されたハードウェア(電気回路)により実現されてもよい。
Claims (6)
- 車両外部に設けられた充電器から供給される電力により車載の蓄電装置を充電することが可能に構成された車両の制御装置であって、
前記車両と前記充電器との間で送受信される信号の入出力を行うように構成された入出力部と、
前記蓄電装置を充電するための規定の通信シーケンスに従って前記入出力部を介した信号の送受信を制御する制御部とを備え、
前記通信シーケンスでは、前記車両が前記充電器から受信した信号が表す内容に基づいて前記車両が前記通信シーケンスを進めることが規定され、
前記制御部は、前記充電器から受信した信号が予め定められた特定信号である場合には、前記特定信号が表す内容に拘わらず前記通信シーケンスを進める、車両の制御装置。 - 前記特定信号は、第1〜第4の信号のうちの少なくとも1つを含み、
前記第1の信号は、前記車両と前記充電器とのハンドシェイクを行うための信号であり、
前記第2の信号は、前記充電器の供給電圧および供給電流に関する情報を含む信号であり、
前記第3の信号は、前記充電器が電力供給を中止する原因に関する情報を含む信号であり、
前記第4の信号は、前記充電器から前記車両への充電実績に関する情報を含む信号である、請求項1に記載の車両の制御装置。 - 前記制御部は、
前記充電器から受信した信号が前記特定信号である場合には、前記特定信号が表す内容に拘わらずに前記通信シーケンスを進める一方で、
前記充電器から受信した信号が前記特定信号以外の他の信号の場合には、前記他の信号が表す内容に応じて前記通信シーケンスを進めるか否かを判断する、請求項2に記載の車両の制御装置。 - 前記他の信号は、第5〜第7の信号のうちの少なくとも1つを含み、
前記第5の信号は、前記充電器が前記車両を識別したかどうかを表す信号であり、
前記第6の信号は、前記充電器から供給可能な最大電力を算出するための信号であり、
前記第7の信号は、前記充電器の電力供給の準備が完了したかどうかを表す信号である、請求項3に記載の車両の制御装置。 - 前記蓄電装置と、
請求項1〜4のいずれか1項に記載の制御装置とを備える、車両。 - 車両外部に設けられた充電器から供給される電力により車載の蓄電装置を充電することが可能に構成された車両の制御方法であって、
前記車両は、前記蓄電装置を充電するための規定の通信シーケンスに従って前記充電器との間で信号を送受信するように構成され、
前記通信シーケンスでは、前記車両が前記充電器から受信した信号が表す内容に基づいて前記車両が前記通信シーケンスを進めることが規定され、
前記車両の制御方法は、
前記充電器から受信した信号が予め定められた特定信号であるか否かを判定するステップと、
前記充電器から受信した信号が前記特定信号である場合には、前記特定信号が表す内容に拘わらず前記通信シーケンスを進めるステップとを含む、車両の制御方法。
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