JP4788842B2 - ハイブリッド車両の制御装置および制御方法 - Google Patents
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Description
Claims (10)
- 内燃機関(36)および回転電機(32−2)の少なくともいずれかを動力源とするハイブリッド車両の制御装置であって、
前記回転電機(32−2)に接続され、前記回転電機(32−2)と電力を授受可能な主電源(10−1)と、
前記回転電機(32−2)と電力を授受可能な複数の副電源(10−2、10−3)と、
前記複数の副電源(10−2、10−3)と前記回転電機(32−2)との間に設けられ、与えられる指令に従って前記複数の副電源(10−2、10−3)のいずれか1つを前記回転電機(32−2)に接続可能に構成された切替装置(18−2)と、
前記切替装置(18−2)を制御する切替制御部(8230)と、
前記内燃機関(36)および前記回転電機(32−2)の少なくともいずれかの動力で前記ハイブリッド車両を走行させるハイブリッド走行制御、および前記内燃機関(36)を用いずに前記回転電機(32−2)の動力で前記ハイブリッド車両を走行させる電気走行制御のいずれかの走行制御を実行する走行制御部(8210)とを含み、
前記切替制御部(8230)は、前記ハイブリッド走行制御中は、前記電気走行制御中よりも、前記回転電機(32−2)に接続される前記複数の副電源(10−2、10−3)の数が少なくなるように、前記切替装置を制御する、ハイブリッド車両の制御装置。 - 前記切替制御部(8230)は、前記電気走行制御中は、前記複数の副電源(10−2、10−3)のいずれか1つを前記回転電気に接続し、前記ハイブリッド走行制御中は、前記複数の副電源(10−2、10−3)を前記回転電機(32−2)から切り離す、請求の範囲第1項に記載のハイブリッド車両の制御装置。
- 前記切替制御部(8230)は、前記電気走行制御中である場合に、前記複数の副電源(10−2、10−3)のうち前記回転電機(32−2)に接続された第1の副電源(10−2)の充電状態が所定状態よりも低下したとき、前記第1の副電源(10−2)を前記回転電機(32−2)から切り離して他の第2の副電源(10−3)を前記回転電機(32−2)に接続する、請求の範囲第1または2項に記載のハイブリッド車両の制御装置。
- 前記走行制御部(8210)は、前記複数の副電源(10−2、10−3)のすべての充電状態が前記所定状態よりも低下した場合、前記電気走行制御に代えて前記ハイブリッド走行制御を実行する、請求の範囲第3項に記載のハイブリッド車両の制御装置。
- 前記制御装置は、前記ハイブリッド走行制御での走行を要求していることを示すハイブリッド走行走行要求を運転者が入力する入力部(17)をさらに含み、
前記走行制御部(8210)は、前記電気走行制御中に前記ハイブリッド走行要求が入力された場合、前記電気走行制御を停止して前記ハイブリッド走行制御を強制的に実行し、
前記切替制御部(8230)は、前記ハイブリッド走行要求が入力されたことに応じて前記ハイブリッド走行制御が強制的に実行される場合は、前記ハイブリッド走行要求が入力された時点における前記回転電機(32−2)と前記複数の副電源(10−2、10−3)のいずれか1つとの接続状態を維持する、請求の範囲第1項に記載のハイブリッド車両の制御装置。 - 前記主電源(10−1)の出力電圧は、前記複数の副電源(10−2、10−3)のいずれの出力電圧よりも低い値に設定される、請求の範囲第1項に記載のハイブリッド車両の制御装置。
- 前記制御装置は、
前記回転電機(32−2)と前記主電源(10−1)との間に設けられ、前記主電源(10−1)の出力電圧を前記回転電機(32−2)の制御電圧範囲に含まれる値に変換して前記回転電機(32−2)に出力する第1のコンバータ(12−1)と、
前記回転電機(32−2)と前記複数の副電源(10−2、10−3)との間に設けられ、前記複数の副電源(10−2、10−3)の出力電圧を前記回転電機(32−2)の制御電圧範囲に含まれる値に変換して前記回転電機(32−2)に出力する第2のコンバータ(12−2)とをさらに含み、
前記ハイブリッド走行制御時における前記回転電機(32−2)の最適制御電圧範囲の第1の下限値は、前記電気走行制御時における前記回転電機(32−2)の制御電圧範囲の第2の下限値よりも低く、
前記主電源(10−1)の出力電圧は、前記第1の下限値に設定され、
前記複数の副電源(10−2、10−3)の出力電圧は、前記第1の下限値と前記第2の下限値の間の値に設定される、請求の範囲第1項に記載のハイブリッド車両の制御装置。 - 前記主電源(10−1)および前記複数の副電源(10−2、10−3)の各々の内部には、直列に接続された複数の電池セルが備えられ、
前記主電源(10−1)および前記複数の副電源(10−2、10−3)の各々は、内部に備えられた電池セルの数に応じた出力電圧を出力し、
前記主電源(10−1)には、前記電気走行制御時の走行可能距離を所定の目標距離以上に確保するために必要な電池セルの総数のうち、前記主電源(10−1)の出力電圧が前記第1の下限値となる数の電池セルが備えられ、
前記複数の副電源(10−2、10−3)には、前記必要な電池セルの総数のうち、前記主電源(10−1)に備えられた数以外の残余の数の電池セルが前記複数の副電源(10−2、10−3)の各々に均等に備えられる、請求の範囲第1項に記載のハイブリッド車両の制御装置。 - 前記ハイブリッド車両は、車両外部の電源(19)からの電力を前記主電源(10−1)および前記複数の副電源(10−2、10−3)に充電可能なプラグインハイブリッド車両である、請求の範囲第1項に記載のハイブリッド車両の制御装置。
- 内燃機関(36)および回転電機(32−2)の少なくともいずれかを動力源とするハイブリッド車両の制御装置(8000)が行なう制御方法であって、前記制御装置(8000)には、前記回転電機(32−2)に接続され、前記回転電機(32−2)と電力を授受可能な主電源(10−1)と、前記回転電機(32−2)と電力を授受可能な複数の副電源(10−2、10−3)と、前記複数の副電源(10−2、10−3)と前記回転電機(32−2)との間に設けられ、与えられる指令に従って前記複数の副電源(10−2、10−3)のいずれか1つを前記回転電機(32−2)に接続可能に構成された切替装置(18−2)とが備えられ、
前記制御方法は、
前記内燃機関(36)および前記回転電機(32−2)の少なくともいずれかの動力で前記ハイブリッド車両を走行させるハイブリッド走行制御、および前記内燃機関(36)を用いずに前記回転電機(32−2)の動力で前記ハイブリッド車両を走行させる電気走行制御のいずれかの走行制御を実行するステップと、
前記ハイブリッド走行制御中は、前記電気走行制御中よりも、前記回転電機(32−2)に接続される前記複数の副電源(10−2、10−3)の数が少なくなるように、前記切替装置を制御するステップとを含む、ハイブリッド車両の制御方法。
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