CONTROL DEVICE OF ELECTRIC OIL PUMP AND CONTROL METHOD OF ELECTRIC OIL PUMP

PROBLEM TO BE SOLVED: To increase an opportunity for driving an electric oil pump.SOLUTION: A control device of an electric oil pump controls the drive or stop of the electric oil pump by controlling the supply of power to the electric oil pump from a battery via a supply route. The control device o...

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Bibliographische Detailangaben
Hauptverfasser: WAKAO MASAAKI, ODATE YUHEI
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:PROBLEM TO BE SOLVED: To increase an opportunity for driving an electric oil pump.SOLUTION: A control device of an electric oil pump controls the drive or stop of the electric oil pump by controlling the supply of power to the electric oil pump from a battery via a supply route. The control device of the electric oil pump comprises a host ECU which performs power management processing (S10 to S40) for determining whether or not the supply of power to the electric oil pump is possible, and power distribution processing (S50, S60) for controlling the supply of power to the electric oil pump from the battery. Then, in the power management processing, the voltage lowering of a drive voltage Veop and a battery voltage Vb is calculated (S20), and a value which is obtained by adding the voltage lowering Vb_e to the lowest drive voltage Veth is set as a threshold Vbth. (S30). It is determined whether or not the supply of power to the electric oil pump is possible on the basis of the threshold Vbth (S40).SELECTED DRAWING: Figure 3 【課題】電動オイルポンプを駆動させる機会を増やせること。【解決手段】電動オイルポンプの制御装置は、電動オイルポンプへのバッテリから供給路を介した電力の供給を制御することで電動オイルポンプの駆動又は停止を制御するものである。この電動オイルポンプの制御装置は、電動オイルポンプへの電力の供給が可能か否かを判断する電力管理処理(S10〜S40)と、電動オイルポンプへのバッテリからの電力の供給を制御する電力分配処理(S50、S60)とを実行する上位ECUを備えている。そして、電力管理処理では、駆動電圧Veopとバッテリ電圧Vbとの電圧降下Vb_eが演算され(S20)、最低駆動電圧Vethに対して電圧降下Vb_eを加算した値が閾値Vbthとして設定され(S30)、閾値Vbthに基づき電動オイルポンプへ電力の供給が可能か否かが判断される(S40)ようにしている。【選択図】図3