摘要:
A direct liquid feed fuel cell system includes fuel cells including an electrolyte membrane, a plurality of cathode electrodes formed on a first surface of the electrolyte membrane, and anode electrodes formed on a second part of the electrolyte membrane; and a high concentration fuel storage unit and a low concentration fuel storage unit which are separated from each other and store a liquid fuel to be supplied to the fuel cell. The liquid fuel in the low concentration fuel storage unit is supplied to the anode electrodes wherein the liquid fuel in the low concentration fuel storage unit is supplied to the anode electrodes when pressure is applied to the low concentration fuel storage unit, such as when the direct liquid feed fuel cell system having the low concentration fuel storage unit is mounted on an electronic device.
摘要:
A water recovery system of a direct liquid feed fuel cell and a direct liquid feed fuel cell having the water recovery system. The water recovery system in which water produced at a cathode electrode of a membrane electrode assembly (MEA) is recovered to supply to an anode electrode, the water recovery system includes: a first member located on the cathode electrode and a first supporting plate that supports the first member; and a second member located on the anode electrode and a second supporting plate that supports the second member, wherein the first member and the second member are connected to each other through a slit formed in an electrolyte membrane of the MEA. The direct liquid feed fuel cell having the water recovery system can be used, for example, in a direct methanol fuel cell (DMFC).
摘要:
An apparatus for measuring a methanol concentration is provided. The apparatus is located in a pipe which supplies liquid fuel to the anode of a direct liquid feed fuel cell, and may include a vertical supporting beam located in the pipe; a horizontal plate located on the supporting beam and having an upper surface with a predetermined roughness; and a sensor fixed to a side of the supporting beam, which generates an electrical signal through a transformation of the supporting beam resulting from variations in a viscosity of the liquid fuel running through the pipe.
摘要:
A fuel delivery apparatus for a direct liquid feed fuel cell is provided. The fuel delivery apparatus includes a plate stack formed by a one or more double-sided plates positioned between opposing end plates. Both sides of the one or more double-sided plates, and the interior side of each end plate, may include one or more microchannels that extend between, and link, an inlet port with an outlet port. The length of the microchannels is chosen to be less than the height of a predetermined meniscus so that liquid fuel propelled by capillary force forms a meniscus that stands proximate the interface between the ends of the microchannels and the outlet port. A heater may be located at the upper ends of the microchannels around the plate stack, to vaporize the liquid fuel at the meniscus.
摘要:
A fuel cell system having a back-up battery and a method of consuming residual fuel in the fuel cell system in which the fuel cell system includes a fuel cell, a system controller, a back-up battery, a converter, a fuel supply control, and a driver to drive the fuel supply control, and a charger disposed between the converter and a load. A power output end of the charger is directly connected to the back-up battery via a switch. The converter includes a first converter connected to the back-up battery and a second converter connected to the fuel cell, and the first and second converters are commonly connected to the charger.
摘要:
A fuel cell system to rapidly increase the temperature of unit cells. The fuel cell system includes; a plurality of current generating unit cells; a load circuit to supply the current to a load; a short circuit to connect the cells to an electrically closed loop without passing through the load; a thermo sensor to measure the temperature of the cells, and a controller that controls the delivery of the current to the load circuit and the short circuit, according to the temperature measured by the thermo sensor. The fuel cell system can rapidly increase the temperature of the unit cells when the temperature of the unit cells is below an operating temperature, thereby reducing the time required for the fuel cell to generate a stable output voltage.
摘要:
Disclosed is a simple-structured fluid transport device. The fluid transport device for creating a fluid flow includes a base provided with a reservoir for storing a fluid; and a driving unit configured on the base for transferring a pressure, induced by an external force applied to the driving unit, to the fluid in the reservoir and thereby causing the fluid to flow.
摘要:
A circuit connection control system of a fuel cell includes a point connection portion to which an anode current collecting portion and a cathode current collecting portion of each unit cell are electrically connected, a voltage measuring unit that measures an output voltage of each unit cell, a switching unit connecting the anode current collecting portions and the cathode current collecting portions of the plurality of unit cells at the point connection portion; and a DC-DC converter that converts a voltage generated from the fuel cell to a predetermined voltage. A method of operating the circuit connection control system includes measuring an output voltage of each unit cell; detecting a first unit cell showing an output voltage lower than a predetermined first voltage; and connecting the first unit cell in parallel to a second unit cell.
摘要:
A fuel cell cartridge includes a fuel pouch to store fuel, the fuel pouch including a fuel outlet; a pressing unit to press the fuel pouch; a variable resistor provided near the fuel pouch; a sensor provided on the pressing unit to read a resistance value of the variable resistor; and a contact pad to transmit an output voltage determined by the resistance value outside the fuel cell cartridge.
摘要:
A direct liquid feed fuel cell system includes fuel cells including an electrolyte membrane, a plurality of cathode electrodes formed on a first surface of the electrolyte membrane, and anode electrodes formed on a second part of the electrolyte membrane; and a high concentration fuel storage unit and a low concentration fuel storage unit which are separated from each other and store a liquid fuel to be supplied to the fuel cell. The liquid fuel in the low concentration fuel storage unit is supplied to the anode electrodes wherein the liquid fuel in the low concentration fuel storage unit is supplied to the anode electrodes when pressure is applied to the low concentration fuel storage unit, such as when the direct liquid feed fuel cell system having the low concentration fuel storage unit is mounted on an electronic device.