摘要:
A fuel cell system capable of computing fuel level stored in a fuel tank, and more particularly to a fuel cell system capable of computing fuel level without using a flux sensor or flow rate sensor includes: a fuel tank storing fuel; a stack for generating electricity by the electro-chemical reaction of the fuel; a fuel pump for transferring fuel from the fuel tank to the stack; a fuel pump for transferring the fuel from the fuel tank to the stack; a pumping controller for generating a pump control signal controlling the pumping operation of the fuel pump; and a fuel level computing unit for computing the amount of fuel used and fuel level from the waveform of the pump control signal. In some embodiments, the fuel cell system informs a user when the fuel level is low, with reduced manufacturing costs.
摘要:
A fuel cell system capable of computing fuel level stored in a fuel tank, and more particularly to a fuel cell system capable of computing fuel level without using a flux sensor or flow rate sensor includes: a fuel tank storing fuel; a stack for generating electricity by the electro-chemical reaction of the fuel; a fuel pump for transferring fuel from the fuel tank to the stack; a fuel pump for transferring the fuel from the fuel tank to the stack; a pumping controller for generating a pump control signal controlling the pumping operation of the fuel pump; and a fuel level computing unit for computing the amount of fuel used and fuel level from the waveform of the pump control signal. In some embodiments, the fuel cell system informs a user when the fuel level is low, with reduced manufacturing costs.
摘要:
A fuel cell system and a method for controlling the same corrects concentration sensing values by estimating temperature according to the load amount of a stack. A control method of a fuel cell system including the steps of: measuring the load amount of loads supplied with power from a stack; estimating temperatures at the area where a concentration sensor is installed from the load amount values; producing the corrected concentrations by correcting the concentration sensing values according to the estimated temperatures; and controlling the drive of the fuel cell system according to the corrected concentrations.
摘要:
A fuel cell system and a method for controlling the same corrects concentration sensing values by estimating temperature according to the load amount of a stack. A control method of a fuel cell system including the steps of: measuring the load amount of loads supplied with power from a stack; estimating temperatures at the area where a concentration sensor is installed from the load amount values; producing the corrected concentrations by correcting the concentration sensing values according to the estimated temperatures; and controlling the drive of the fuel cell system according to the corrected concentrations.
摘要:
A fuel cell system capable of exactly controlling a concentration of a fuel supplied for generation of electricity regardless of deterioration of a concentration sensor with time, and a driving method thereof include: a fuel cell stack to generate electric power through an electrochemical reaction of hydrogen and oxygen; a mixing tank to supply a diluted fuel to the fuel cell stack, the diluted fuel obtained by mixing a raw fuel with water discharged from the fuel cell stack; a reference concentration tank to store a predetermined optimum concentration of a reference solution for the fuel cell stack; and a concentration sensing module to measure a concentration of either the diluted fuel or the reference solution.
摘要:
A fuel pump driving module used for supplying fuel from a fuel tank to a fuel cell—and more particularly, a driving module for a diaphragm pump, and a fuel cell system equipped with the same—includes a pump controller for generating an ON/OFF signal and a reference pulse to a pump; and a pump driving pulse generation unit for combining the reference pulse according to a predetermined rule to determine a frequency and a duty ratio of the pump driving pulse and activating the pump driving pulse according to the ON/OFF signal to the pump. The pump driving module may be useful to commonly apply a single pump driving module to various manufacturers' fuel pumps, thereby to reduce the fabricating cost of the fuel cell system.
摘要:
An apparatus to sense and control a malfunction in balance of plant for a fuel cell includes a microprocessor having an ALU to perform calculations, a register to temporally store data and instructions, and a controller to control the operation of the fuel cell system. The microprocessor includes a first input stage input with a first detecting signal to operate the fuel cell system, an output stage to apply a control signal generated by the controller to balance of plant, and a second input stage to receive a second detecting signal to detect a malfunction in balance of plant.