Hybrid Construction Machinery

Hybrid construction machine, comprising:

• an engine;
• a hydraulic pump that is driven by the engine;
• a hydraulic working device that is driven by hydraulic oil discharged from the hydraulic pump;
• a motor generator that transmits torque between the engine;
• an inverter that controls the motor generator;
• an electrical storage device that effects charging/discharging through the inverter;
• and
• a control device that controls power of the hydraulic pump and electric power of the inverter in response to storage battery characteristics of the electrical storage device, wherein
• the control device limits both of power of the hydraulic pump and electric power of the inverter when at least either one of electric current or voltage of the storage battery characteristics of the electrical storage device is out of a predetermined range while the engine supplies upper limit output, and limits only power of the hydraulic pump when electric current and voltage of the storage battery characteristics of the electrical storage device are within the predetermined range and at least either one of temperature or a state of charge of the storage battery characteristics of the electrical storage device is out of a predetermined range.

Hybrid construction machine, comprising:

• an engine;
• a hydraulic pump that is driven by the engine;
• a hydraulic working device that is driven by hydraulic oil discharged from the hydraulic pump;
• a motor generator that transmits torque between the engine;
• an inverter that controls the motor generator;
• an electrical storage device that effects charging/discharging through the inverter;
• and
• a control device that controls power of the hydraulic pump and electric power of the inverter in response to storage battery characteristics of the electrical storage device, wherein
• the control device limits both of power of the hydraulic pump and electric power of the inverter when at least either one of voltage or a state of charge of storage battery characteristics of the electrical storage device is out of a predetermined range while the engine supplies upper limit output, and limits only power of the hydraulic pump when voltage and the state of charge of the storage battery characteristics of the electrical storage device are within the predetermined range and at least either one of electric current or temperature of the storage battery characteristics of the electrical storage device is out of a predetermined range.