Fuel cell system and its use and method for distributing power between a fuel cell stack and a battery in a fuel cell system

摘要

A fuel cell system (10) comprising: a fuel cell stack (12); a power source (14); a power damping processor (52) responsive to a driver demand signal for generating a damped driver demand signal; a subtractor (56) responsive to a predetermined state of charge (SOC) setpoint signal of the power source (14) and an actual power source SOC signal, the subtractor (14) being a difference signal between the SOC setpoint and the actual power source SOC generated; an SOC controller (62) responsive to the difference signal for generating a power source SOC control signal; an adder (64) that adds the attenuated driver demand signal and the power source SOC control signal to generate a power demand signal of the fuel cell system (10); and a power equalization module (70) responsive to the fuel cell system power demand signal and, based on the fuel cell system power demand signal, controls how much power is delivered by the fuel cell stack (12), how much power is delivered by the power source (14), and how much Fuel cell stack power is used to recharge the power source (14).