Turning control apparatus for a hybrid construction machine

摘要

A turning control apparatus for a hybrid construction machine may include an engine, an oil hydraulic pump, an electric energy storage device, an engine assistant motor, a turning motor, a power converter, a battery, an HCU, an SMPS configured to apply electric power to the HCU by being supplied with electric power from the battery, a Key1 configured to switch a VKey_On path which supplies electric power from the battery to the SMPS when a key on signal of a driver is inputted, and a Key2 configured to switch a VKey_Out path which allows electric power to be supplied from the battery to the SMPS when an operation of the Key1 is stopped, in which the Key2 is switched when it is confirmed that the turning motor is being driven in a state in which an operation of the Key1 is stopped.

主权项

1. A turning control apparatus for a hybrid construction machine which comprises an engine, an oil hydraulic pump, an electric energy storage device, an engine assistant motor, a turning motor, a power converter, a battery mounted in a vehicle separately from the electric energy storage device, and a hybrid control unit (HCU), the turning control apparatus comprising:
an SMPS configured to apply operating electric power to the hybrid control unit (HCU) by being supplied with operating electric power from the battery; a first switch Key1 configured to switch a VKey_On path which allows operating electric power to be supplied from the battery to the SMPS when a key on signal of a driver is inputted; and a second switch Key2 configured to switch a VKey_Out path which allows operating electric power to be supplied from the battery to the SMPS when an operation of the first switch Key1 is stopped, wherein the second switch Key2 is switched when it is confirmed that the turning motor is being driven in a state in which an operation of the first switch Key1 is stopped; wherein when the first switch Key1 is turned off in a state in which the second switch Key2 is switched by a drive of the turning motor, the hybrid control unit (HCU) performs a brake control of the turning motor to stop the turning motor, and then turns off the second switch Key2 to block operating electric power which is supplied from the battery.