摘要:
A fuel supply device for a fuel cell and a fuel cell system using the same that prevent H2O, used in reforming from reaching and collecting in the fuel cell stack. The fuel supply device for a fuel cell includes a fuel reformer adapted to generate reformate via a reforming reaction, a gas-liquid separator coupled to an outlet of the fuel reformer, the gas-liquid separator being adapted to receive the reformate and control a moisture amount included within the reformate, a pipe coupled to an outlet of the gas-liquid separator, the pipe being adapted to pass the reformate and a condensed water removing device coupled with the pipe, the condensed water removing device being adapted to prevent condensed water within the reformate within the pipe from passing to an outside.
摘要:
A fuel cell system including a fuel cell stack having a plurality of unit cells is provided. A method of driving the fuel cell stack is also provided. The method may include supplying a fuel to a fuel cell stack, supplying an oxidizer to the fuel cell stack, controlling supply of the fuel and the oxidizer to operate the fuel cell stack, calculating a total operation time of the fuel cell, and/or varying a stack activation period in which the oxidizer is blocked to the fuel cell stack according to the total operation time and a stack activation cycle of which the stack activation period is generated.
摘要:
In a fuel cell, a fuel cell stack for high temperature comprises: a main body of the fuel cell having an electrolyte membrane, and an anode electrode and a cathode electrode bonded to both sides of the electrolyte membrane for generating electric energy by electro-chemically reacting fuel supplied to the anode electrode and oxidizer supplied to the cathode electrode; and a heater having a chamber attached to the main body of the fuel cell and an oxidation catalyst installed inside the chamber. The heater generates heat by oxidizing fuel supplied to the inside of the chamber, and heats the main body of the fuel cell with the generated heat. According to the present invention, it is possible to significantly reduce the starting time of the main body of the fuel cell, and to easily control a starting temperature of the main body of the fuel cell.
摘要:
A flowing device for an optics-based methanol sensor includes an inner housing that surrounds the optics-based methanol sensor, an outer housing that surrounds the inner housing, a flow channel in the inner housing formed on a totally reflecting surface of the optics-based methanol sensor, a fuel inlet that is formed through the inner and outer housings and supplies liquid fuel to the flow channel, and a fuel outlet that is formed through the inner and outer housings and discharges the liquid fuel that has passed through the flow channel to an outside of the outer housing.
摘要:
There is provided a fuel cell system capable of improving the performance and operational stability of the fuel cell system by measuring the exact amount of flow of an oxidizer that is supplied to the fuel cell system. The fuel cell system includes a stack for generating electricity by an electrochemical reaction of a fuel and an oxidizer, an oxidizer supply device for supplying an oxidizer to the stack. A volume flow meter coupled to the oxidizer supply device. The volume flow meter measures a volume flow the oxidizer.
摘要:
A fuel cell system and a control method thereof are capable of preventing anode flooding due to a temperature difference between a stack and reformate upon starting a fuel cell system. The method of controlling a fuel cell system including steps of detecting a temperature of a fuel cell stack, detecting a temperature of reformate that is generated in a fuel reformer and then is supplied to the fuel cell stack through a heat exchanger, and setting the temperature of the reformate to be lower than the temperature of the fuel cell stack during a starting time of the fuel cell system.
摘要:
A method of driving a fuel cell system is disclosed. The method of driving the fuel cell system may include supplying water to a reformer by pressing a pump pipe to pressing members to move the pressing members in a first direction, stopping power generation including stopping a supply of fuel and oxidant to the reformer, and discharging water in the reformer by moving the pressing members in a second direction opposite to the first direction while pressing the pump pipe with the pressing members. A fuel cell system is also disclosed. The fuel cell system includes a reformer, a fuel cell stack and a water transferring pump. The water transferring pump includes pressing members and a pump pipe. The pump pipe is in fluid communication with a water transferring pipe.
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 cell stack includes a body that includes electrical generators and a device that is electrically connected to the electrical generators to measure an electrical output from the electrical generators. The device includes a base substrate that is fixed to the body and terminal members that are formed on the base substrate and electrically connected to the electrical generators.
摘要:
A fuel cell system includes a fuel cell stack, a reformer which generates a reformed gas through a reforming reaction between a gaseous fuel and water and supplies the reformed gas to the fuel cell stack, a fuel tank which compresses the gaseous fuel, stores the compressed fuel in an at least a partially liquid phase, and supplies the gaseous fuel to the reformer, a water tank connected to the fuel tank and the reformer to store water and to supply the water to the reformer by an internal air pressure of the fuel tank, and a first valve installed in a connection line connecting the water tank to the fuel tank to selectively open or close the connection line according to an electrical on/off pulse signal.