Patent ID: 7069673
Filing Date: 2006-07-04
Classification: B60K,B60L,B60W,B60Y,E02F,H02J,Y02T

Abstract:
1. A power controller for hybrid construction machine including an engine, a generator which is driven by said engine, an electrical energy storage unit to store electric power generated by said generator, and one or more electric actuators driven by said generator and said electrical energy storage unit, characterized by comprising: a load power detecting means to detect required power for said one or more electric actuators; a charging power setting means to set maximum value of charging power of said electrical energy storage unit; a discharging power setting means to set maximum value of discharging power of said electrical energy storage unit; a generator output power setting means to set upper limit and lower limit value of output power of said generator; a power distribution determining means to determine power distribution between said generator and said electrical energy storage unit based on the set value by said charging power setting means, the set value by said discharging power setting means, the set value by said generator output power setting means, and the detection result by said load power detecting means; a generator power controlling means to control the output power of said generator based on the determination result by said power distribution determining means; and a power controlling means for electrical energy storage unit to control charging/discharging power of said electrical energy storage unit based on the determination result by said power distribution determining means.