JP7323073B2 - 車両の制御方法及び車両の制御システム - Google Patents
車両の制御方法及び車両の制御システム Download PDFInfo
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- JP7323073B2 JP7323073B2 JP2022539842A JP2022539842A JP7323073B2 JP 7323073 B2 JP7323073 B2 JP 7323073B2 JP 2022539842 A JP2022539842 A JP 2022539842A JP 2022539842 A JP2022539842 A JP 2022539842A JP 7323073 B2 JP7323073 B2 JP 7323073B2
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Hybrid Electric Vehicles (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Description
図1は、本発明の第1実施形態における車両1の構成例を示すブロック図である。
図2Aは、通常時充放電マップの一例を示す図である。図2Bは、高地用充放電マップの一例を示す図である。なお、図2A及び図2Bでは、縦軸はバッテリ13の上乗せ充電量「kW」を示し、横軸はSOC(States Of Charge)「%」を示す。ここで、上乗せ充電量とは発電機12が発電した電力のうち、バッテリ13に充電される電力量を意味する。例えば、上乗せ充電量の値が正の値であれば充電となり、上乗せ充電量の値が負の値であれば放電となる。すなわち、放電の場合はバッテリ13の電力を用いて電動モータ14を駆動することとなる。また、図2A及び図2Bでは、バッテリ13の上乗せ充電量の下限値を制御する場合の例を示す。すなわち、図2Aには、通常時での上乗せ充電量の下限線の一例を示し、図2Bには、高地での上乗せ充電量の下限線の一例を示す。
図3A乃至図3Dでは、高地判定閾値TH1を基準にした場合の駆動力の制限例を示す。なお、図3A乃至図3Dでは、説明を容易にするため、各関係を簡略化して示す。
図4は、要求駆動力と車速との関係例を示す図である。なお、図4では縦軸で要求駆動力「N」を示し、横軸は車速「kph」を示す。ここで、車速と電動モータ14の回転数とは比例関係となるため、図4に示す要求駆動力と車速との関係例は、要求駆動力と電動モータ14の回転数との関係例としても把握できる。
図5は、車両1の制御システムが実行する車両制御処理の処理手順の一例を示すフローチャートである。なお、この処理手順は、車両1の制御システムの記憶部(図示略)に記憶されているプログラムに基づいて実行される。
第1実施形態に係る車両の制御方法は、車両1を駆動する電動モータ14と、電動モータ14に供給する電力を発電する発電機12を駆動するエンジン11と、発電機12により充電可能に構成されるとともに電動モータ14に電気的に接続されたバッテリ13とを備える車両1の制御方法である。この制御方法は、エンジン11の出力が制限される環境を車両1が走行している場合に、電動モータ14の駆動力を制限する制御ステップ(ステップS505乃至S511)を含む。
第1実施形態では、車両の標高が高地判定閾値TH1を越えた場合に電動モータの駆動力の上限値を制限する例を示した。すなわち、高地と判定された場合の制御を1段階で行う例を示した。ただし、複数の高地判定閾値を設定しておき、これらの高地判定閾値を車両の標高が超えたタイミングで、各高地判定閾値に応じた制限を実行するようにしてもよい。そこで、第2実施形態では、複数の高地判定閾値を設定して、電動モータの駆動力の上限値を制限する例を示す。なお、第2実施形態は、第1実施形態の一部を変形した例であり、第1実施形態と共通する部分については、図示及びその説明の一部を省略する。
図6は、第2実施形態における要求駆動力と車速との関係例を示す図である。なお、図6は、図4の一部を変形した例であり、図4と共通する部分については、同一の符号を付してその説明の一部を省略する。
第1、第2実施形態では、キックダウンスイッチを搭載する車両1を例にして説明した。第1、第2実施形態は、キックダウンスイッチを搭載していない車両についても適用可能である。そこで、第3実施形態では、キックダウンスイッチを搭載していない車両を例にして説明する。なお、第3実施形態は、第1、第2実施形態の一部を変形した例であり、第1、第2実施形態と共通する部分については、図示及びその説明の一部を省略する。
図7は、第3実施形態における車両の制御システムが実行する車両制御処理の処理手順の一例を示すフローチャートである。なお、図7に示す例は、図5の一部を変形したものであり、図5と共通する部分については、同一の符号を付してその説明の一部を省略する。具体的には、図7では、図5に示すステップS507、S509を省略した点が異なる。
Claims (7)
- 車両を駆動する電動モータと、前記電動モータに供給する電力を発電する発電機を駆動するエンジンと、前記発電機により充電可能に構成されるとともに前記電動モータに電気的に接続されたバッテリとを備える車両の制御方法であって、
前記エンジンの出力が制限される環境を前記車両が走行している場合に前記電動モータの駆動力を制限する制御ステップを含み、
前記制御ステップは、前記環境を前記車両が走行している場合において、前記車両の車速が所定値以上のときには前記電動モータの駆動力を制限するとともに前記車速に基づいて前記電動モータの駆動力の制限量を設定し、前記車両の車速が前記所定値未満のときには前記電動モータの駆動力を制限しない、
車両の制御方法。 - 請求項1に記載の車両の制御方法であって、
前記制御ステップは、前記環境を前記車両が走行し、かつ、前記車両の車速が前記所定値を基準として大きい場合において、所定の加速操作がされたときには、前記電動モータの駆動力の制限を緩和する、
車両の制御方法。 - 請求項1又は請求項2に記載の車両の制御方法であって、
前記制御ステップは、前記環境を前記車両が走行している場合には、当該環境を前記車両が走行する前よりも、前記バッテリの上乗せ充電量が0kWとなるSOCを大きい値に設定する、
車両の制御方法。 - 請求項1から請求項3のいずれかに記載の車両の制御方法であって、
前記制御ステップは、前記環境を前記車両が走行している場合には、当該環境下での前記エンジンによる発電電力に基づいて、前記電動モータの駆動力を制限する、
車両の制御方法。 - 請求項4に記載の車両の制御方法であって、
前記制御ステップは、前記環境下での前記エンジンによる発電電力が前記電動モータの要求電力よりも大きくなるように前記電動モータの駆動力を制限する、
車両の制御方法。 - 請求項1から請求項5のいずれかに記載の車両の制御方法であって、
前記制御ステップは、前記環境を前記車両が走行している場合には、前記電動モータの出力一定領域で駆動力を制限する、
車両の制御方法。 - 車両を駆動する電動モータと、前記電動モータに供給する電力を発電する発電機を駆動するエンジンと、前記発電機により充電可能に構成されるとともに前記電動モータに電気的に接続されたバッテリと、前記電動モータを制御するコントローラとを備える車両の制御システムであって、
前記コントローラは、前記エンジンの出力が制限される環境を前記車両が走行している場合に前記電動モータの駆動力を制限し、
前記環境を前記車両が走行している場合において、前記車両の車速が所定値以上のときには前記電動モータの駆動力を制限するとともに前記車速に基づいて前記電動モータの駆動力の制限量を設定し、前記車両の車速が前記所定値未満のときには前記電動モータの駆動力を制限しない、
車両の制御システム。
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