JP2016059269A - 車両駆動システム及びその制御方法 - Google Patents
車両駆動システム及びその制御方法 Download PDFInfo
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Abstract
【解決手段】本発明に係る車両駆動システムは、第一電動機と、第二電動機と、第一電動機の第一回転軸と第二電動機の第二回転軸との間に設置され、第一回転軸と第二回転軸とを結合させ又は分離させるためのクラッチ機構と、第一電動機、第二電動機及びクラッチ機構に接続された制御ユニットと、制御ユニットに接続され、車両走行状況を感知するためのセンサと、を備え、制御ユニットは、センサから出力された、車両走行状況を示す信号に基づいて、クラッチ機構の動作モード、及び/又は、第一電動機及び第二電動機の動作モード及び負荷を決定して制御するように構成される。本発明によれば、車両駆動システムは、高い効率、安全性及び操縦性を有するが、サイズは小さく、コストは低い。
【選択図】図1
Description
第一電動機と、
第二電動機と、
前記第一電動機の第一回転軸と前記第二電動機の第二回転軸との間に設けられ、前記第一回転軸と前記第二回転軸とをカップリングさせ又は分離させるためのクラッチ機構と、
前記第一電動機、前記第二電動機及び前記クラッチ機構に接続された制御ユニットと、
前記制御ユニットに接続され、車両走行状況を感知するためのセンサと、
を備え、
前記制御ユニットは、センサから出力された、車両走行状況を示す信号に基づいて、前記クラッチ機構の動作モード、及び/又は、前記第一電動機及び前記第二電動機の動作モード及び負荷を決定し制御するように構成される車両駆動システムが提案される。
センサが出力した車両走行状況を示す信号に基づいて、前記制御ユニットにより前記クラッチ機構の動作モード、並びに、前記第一電動機及び前記第二電動機の動作モード及び負荷を決定し制御することを含む、前記車両駆動システムの制御方法を提供する。
3 第一電動機
5 第二電動機
7 第一電動機3の第一回転軸
9 第一電動機3の第一回転子
11 第一電動機3の第一固定子
13 第二電動機5の第二回転軸
15 第二電動機5の第二回転子
17 第二電動機5の第二固定子
19 ハウジング
21 第一トルクダンパ部材
23 第二トルクダンパ部材
25,27 車輪
29 クラッチ機構
31 制御ユニット
Claims (11)
- 第一電動機(3)と、
第二電動機(5)と、
前記第一電動機(3)の第一回転軸(7)と前記第二電動機(5)の第二回転軸(13)との間に設置され、前記第一回転軸(7)と前記第二回転軸(13)とを結合させ又は分離させるためのクラッチ機構(29)と、
前記第一電動機(3)、前記第二電動機(5)及び前記クラッチ機構(29)に接続された制御ユニット(31)と、
前記制御ユニット(31)に接続され、車両走行状況を感知するためのセンサと、
を備え、
前記制御ユニット(31)は、前記センサから出力された、車両走行状況を示す信号に基づいて、前記クラッチ機構(29)の動作モード、及び/又は、前記第一電動機(3)及び前記第二電動機(5)の動作モード及び負荷を決定して制御するように構成されている、
ことを特徴とする車両駆動システム(1)。 - 前記制御ユニット(31)は、前記クラッチ機構(29)を結合、摺動摩擦又は分離のモードで動作させるように決定して制御することを特徴とする請求項1に記載の車両駆動システム(1)。
- 前記第一電動機(3)の出力パワー及び出力トルクは、前記第二電動機(5)の出カパワー及び出力トルクより大きく、前記制御ユニット(31)は、前記第一電動機(3)だけを駆動モードで動作させ、前記第一電動機(3)及び前記第二電動機(5)を一緒に駆動モードで動作させ、前記第一電動機(3)だけを発電モードで動作させ、又は、前記第一電動機(3)及び前記第二電動機(5)を一緒に発電モードで動作させるように決定して制御することを特徴とする請求項1に記載の車両駆動システム(1)。
- 前記第一電動機(3)及び前記第二電動機(5)は、共用ハウジング(19)を有することを特徴とする請求項1に記載の車両駆動システム(1)。
- 前記車両駆動システム(1)の動作中に、冷却流体が流通するように、前記ハウジング(19)内に複数の冷却流体通路が形成されることを特徴とする請求項4に記載の車両駆動システム(1)。
- 前記ハウジング(19)内に位置し且つ前記第一回転軸(7)上の出力端近傍に設置された第一トルクダンパ部材(21)と、前記ハウジング(19)内に位置し且つ前記第二回転軸(13)上の出力端近傍に設置された第二トルクダンパ部材(23)とを更に備えていることを特徴とする請求項4に記載の車両駆動システム(1)。
- 前記車両は、電動車両又はハイブリッド車両であることを特徴とする請求項1に記載の車両駆動システム(1)。
- センサが出力した、車両走行状況を示す信号に基づいて、前記制御ユニット(31)により前記クラッチ機構(29)の動作モード、及び/又は、前記第一電動機(3)及び前記第二電動機(5)の動作モード及び負荷を決定して制御することを含む、請求項1から7までのいずれか一項に記載の車両駆動システム(1)の制御方法。
- 前記車両が発進及び直進加速階段にあることを前記センサが感知すると、前記車両の二つの駆動車輪(25、27)が同期するように、前記制御ユニット(31)は、前記クラッチ機構(29)を結合モードで動作させるように制御し、
前記車両が旋回する階段又は二分された道路を走行する階段にあることを前記センサが感知すると、前記車両の二つの駆動車輪が不同期になるように、前記制御ユニット(31)は、前記クラッチ機構(29)を摺動摩擦及び/又は分離モードで動作させるように制御する、
ことを特徴とする請求項8に記載の制御方法。 - 前記車両が都市道路状況での発進階段、加速階段及び定速巡航階段にあることを前記センサが感知すると、前記制御ユニット(31)は、前記第一電動機(3)及び前記第二電動機(5)のうちの一つの電動機だけを駆動モードで動作させるように制御し、
前記車両が都市道路状況での低速度走行の制動階段にあることを前記センサが感知すると、前記制御ユニット(31)は、前記車両を制動し且つ制動過程でエネルギーを回収するように、前記第一電動機(3)及び前記第二電動機(5)のうちの一つの電動機だけを発電モードで動作させるように制御し、
前記車両が都市道路状況での中高速度走行の制動階段にあることを前記センサが感知すると、前記制御ユニット(31)は、前記車両を制動し且つ制動過程でエネルギーを回収するように、前記第一電動機(3)及び前記第二電動機(5)が発電モードで一緒に動作するように制御する、
ことを特徴とする請求項8に記載の制御方法。 - 一つの電動機のみが駆動モード又は発電モードで動作する際に、前記一つの電動機は、前記第一電動機(3)及び前記第二電動機(5)のうちの出力パワー及び出力トルクが大きい電動機である、ことを特徴とする請求項10に記載の制御方法。
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