Abstract: A plate type fuel cell system includes: an electric generator including a membrane-electrode assembly having a plurality of anode electrodes and a plurality of cathode electrodes arranged on opposite surfaces of a proton-exchange membrane and spaced apart from each other; an anode separator facing the plurality of anode electrodes and having a fluid channel adapted to receive a hydrogen containing fuel; a cathode separator facing the plurality of cathode electrodes and having an air ventilating hole; a fuel distributor having an accommodating part defined by a rib to accommodate the anode separator and adapted to distribute the hydrogen containing fuel to each of the plurality of anode electrodes, the rib being partially cut out to define a rib cutting part; and a sealing member contained within the rib cutting part.

Abstract: A method and an apparatus for water management in a direct methanol fuel cell system using a heat exchanger and including a pipe for connecting a cathode outlet of a fuel cell stack with a mixer. The method includes: measuring an output voltage and/or an output current of the fuel cell stack; extracting a concentration value of the mixed fuel corresponding to the measured output voltage and/or current from a look-up table; comparing the extracted concentration value of the mixed fuel with a reference concentration value; and forcibly cooling a fluid flowing in a pipe for a time period by a heat exchanger coupled to the pipe when the extracted concentration value of the mixed fuel is higher than the reference concentration value.

Abstract: A bipolar plate includes at least two channels respectively arranged in first and second opposite surfaces of the bipolar plate, the at least two channels adapted to allow respective fluids to flow therethrough; the first surface of the opposite surfaces of the bipolar plate has hydrophobicity and the second surface of the opposite surfaces of the bipolar plate has hydrophilicity; a unit cell includes such a bipolar plate; and a fuel cell system also includes such a bipolar plate. With this configuration, carbon dioxide and water produced by a chemical reaction of a unit cell is easily discharged to the outside, to enhance the power generation efficiency of the unit cell and to enhance the power generation efficiency of the fuel cell system.

Abstract: Disclosed is a mixing tank for a fuel cell system having a housing, wherein the housing comprises: an inlet portion through which a low concentration fuel and a high concentration fuel are introduced; a mixing portion in which the introduced fuels are mixed; and an outlet portion through which the mixed fuel is discharged, wherein the mixing portion comprises a mixing member to divide a flow of the introduced fuel into a plurality of flows, so that low concentration un-reacted fuel discharged from a stack is uniformly mixed with high concentration fuel, thereby producing hydrogen containing fuel having a predetermined, uniform concentration. Further, a hydrogen containing fuel uniformly mixed and having a predetermined concentration is supplied to a stack, thereby enhancing efficiency of generating electricity.

Abstract: An air supply system for a fuel cell and a fuel supply system with the same include a housing having an inlet hole and an outlet hole for respectively allowing inward and outward flow of a fluid; an air pump inserted and installed into the housing and having an inlet tube into which the fluid flows and an outlet tube through which the fluid flows out; a filtering portion installed between the inlet hole and the outlet hole within the housing and filtering particulate contaminants and chemical contaminants in the fluid; and a soundproofing member installed between the outlet tube and the outlet hole within the housing.

Abstract: There are provided a pump of a noise suppression and vibration proof structure and a fuel cell system using the same. The fuel cell system includes at least one electricity generator including an electrolyte membrane and an anode and a cathode attached to the both surfaces of the electrolyte membrane to generate electricity energy by the electrochemical reaction between fuel containing hydrogen and oxidant supplied to the anode and the cathode, a fuel supplying unit including a pump for supplying the oxidant to the electricity generator, and a fixed frame that is provided on a lower frame and to which the pump is fixed. The pump is separated from the lower frame and is fixed to and combined with the fixed frame by the belt-shaped fixing member on the side surface of the fixing frame with a buffering member interposed. Therefore, it is possible to reduce the noise and vibration of the pump.

Abstract: A pump for a fuel cell of a noise suppression and vibration proof structure and a fuel cell system using the same. The pump includes a housing including a metal housing main body and an inlet hole and an outlet hole for receiving and discharging a fluid and a pump inserted into the housing and including an inlet pipe through which the fluid is received and an outlet pipe that passes through the outlet hole and through which the received fluid is discharged with predetermined pressure. Therefore, the noise and vibration of the pump are reduced.

Abstract: A fuel tank and a cap device for the fuel tank. The fuel tank is connected to a fuel cell and includes a tank body having a fuel opening and a pin hole for maintaining an inside pressure, a floater positioned on a surface of the fuel stored in the tank body, and an air pipe connected to the pin hole and an upper part of the floater. The cap device includes a cap body having an inside transfer path for connecting an inlet opening for introducing the fuel and an outside transfer pipe, a fixed outer cap including a connector for fixing a discharge opening into which the transfer pipe is inserted, and an elastic opening/closing section in which the cap body is elastically compressible by the connector, and wherein the inside transfer path opens during the compression.

Abstract: A stack for a fuel cell includes a first collecting plate having a first electric polarity, a second collecting plate having a second electric polarity different from the first electric polarity, and at least one electricity generator located between the collecting plates. The at least one electricity generator is for generating electric energy due to electrochemical reaction between hydrogen and oxygen to be collected by the collecting plates. Coupling members press the at least one electricity generator in an airtight connection between the collecting plates. A terminal member protrudes from the second collecting plate and is electrically connected to the first collecting plate and insulated from the second collecting plate, such that the terminal member is used as a first terminal having the first polarity. The second collecting plate or a second terminal member may also be used as a second terminal having the second polarity.

Abstract: A fuel cell system comprises an electricity generation section for generating electrical energy through electrochemical reaction of hydrogen and oxygen, a fuel supply section including a fuel pump arranged in a fuel tank for providing fuel, an oxidizer supply section including an oxidizer supply pump for providing an oxidizer to the electricity generation section, and a pump fixing accessory for connecting the fuel pump and the oxidizer supply pump to the body plate of a fuel cell, and for absorbing vibration generated by driving of one of both pumps. The pump fixing accessory comprises a vibration absorbing section for absorbing the vibration generated by the driving of the pump(s), a first connection section having one end connected to the vibration absorbing section and another end connected to the pump(s), and a second connection section having one end connected to the vibration absorbing section and another end connected to the body plate of the fuel cell.

Abstract: A fuel cell system for rapidly initiating a fuel cell stack. The fuel cell system includes a fuel cell stack including at least one unit fuel cell for generating electricity through an electro-chemical reaction of an oxidant and a fuel containing hydrogen, a fuel-supplying unit for supplying the fuel and the oxidant to the fuel cell stack, a sensor for detecting a temperature of the fuel cell stack, an initiation load having a predetermined resistance, and a switching part for electrically connecting the initiation load to an output terminal of the fuel cell stack.