Patent application number | Description | Published |
20080290831 | FUEL CELL SYSTEM COMPRISING BATTERY AND METHOD OF CONSUMING RESIDUAL FUEL IN THE FUEL CELL SYSTEM - 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. | 11-27-2008 |
20090087703 | RECYCLER FOR DIRECT METHANOL FUEL CELL AND METHOD OF OPERATING THE SAME - A recycler for a direct methanol fuel cell (DMFC) that uses methanol as a direct feed fuel includes: a housing in which a gas-liquid mixture recovered from a stack is accommodated; a rotor rotatably mounted in the housing; and a motor to rotate the rotor, wherein, when the rotor is rotated by the motor, a phase separation occurs such that liquid in the gas-liquid mixture is collected mainly in an outer region of the housing and gas is collected in the center region of the housing due to the centrifugal force. Accordingly, as it is unnecessary to align a liquid outlet port of the housing with a gravitational direction, the recycler can be employed in a mobile apparatus whose orientation occasionally changes. Also, the recycler does not use a membrane whose performance is rapidly reduced over time so that effective performance can be maintained for a long operation time. | 04-02-2009 |
20090176132 | FUEL CELL SYSTEM CAPABLE OF SUPPLYING AND RECEIVING POWER AND METHOD OF OPERATING THE SAME - Provided is a fuel cell system including: a cartridge in which fuel is stored; a power unit producing power by using the fuel supplied from the cartridge; and a port to which an electronic device is connected, wherein the port comprises: a first channel which is a channel for receiving start-up power from the electronic device and supplying produced power to the electronic device; a second channel via which a signal indicating attachment of the fuel cell system to the electronic device is transmitted to the electronic device when the fuel cell system is attached to the electronic device; and a third channel for grounding. | 07-09-2009 |
20090189932 | DROPLET EMITTING APPARATUS HAVING PIEZOELECTRIC VOLTAGE GENERATOR AND METHOD OF EMITTING A DROPLET USING THE SAME - Provided are a droplet emitting apparatus and a method of emitting droplets using the same. The apparatus includes a solution tank for containing a solution; a nozzle including an opening through which at least a droplet of the solution is emitted; and a voltage generator including a piezoelectric material for generating a voltage by instantaneous pressure application, wherein the voltage generated by the pressure to the piezoelectric material is applied to the solution in order for the at least a droplet of the solution to be emitted through the nozzle | 07-30-2009 |
20090191433 | FUEL CELL SYSTEM AND OPERATING METHOD THEREOF - A fuel cell system operating method in which a temperature of a fuel cell power generator is measured when the fuel cell power generator stops generating power, and it is determined whether the temperature is within a predetermined temperature range, and a reverse current is supplied to the fuel cell power generator upon restart if the temperature was determined to be outside of the predetermined range so as to increase the efficiency of the system after restarting the fuel cell power generator after being exposed to extreme conditions. Subsequently, the reverse current supply to the fuel cell power generator stops and electric energy is generated through an electrochemical reaction between hydrogen and oxygen in the fuel cell power generator. | 07-30-2009 |
20090322828 | DEVICE FOR PRINTING DROPLET OR INK ON SUBSTRATE OR PAPER - A device for printing a droplet onto a substrate includes: a droplet generating member which is needle-shaped and comprises a receiving portion disposed vertically to receive a solution, and a discharge hole connected to the receiving portion and formed on a bottom of the receiving portion so that the solution can be discharged from the receiving portion; a substrate disposed below the droplet generating member, the substrate includes a target portion to which the droplet discharged from the discharge hole of the droplet generating member is dropped and attached; a voltage applier applying a voltage to the droplet so that the droplet can be dropped onto the target portion of the substrate; a volume measuring unit measuring the volume of the droplet; and a droplet control unit maintaining the volume of the droplet at a predetermined level based on the measured volume of the droplet. | 12-31-2009 |
20100044216 | METHOD FOR CONTROLLING THE CONTACT ANGLE OF A DROPLET IN ELECTROWETTING AND AN APPARATUS USING THE DROPLET FORMED THEREBY - A method for controlling the hydrophilic droplet using the electrowetting principle is disclosed. More specifically, the present invention provides a method for increasing the change of the contact angle in the interface that is formed between the hydrophilic droplet and the nonpolar fluid by adding a constant concentration of two-element electrolyte or three-element electrolyte to the hydrophilic droplet; and an apparatus for controlling the droplet having the change of the contact angle and velocity scope increased by the method. | 02-25-2010 |
20100098981 | FUEL CELL SYSTEM HAVING FUEL CIRCULATION STRUCTURE, METHOD OF OPERATING THE SAME, AND ELECTRONIC APPARATUS INCLUDING THE FUEL CELL SYSTEM - In a fuel cell system including a fuel cartridge and a fuel supply module, the fuel cartridge includes at least two ports, wherein a first port from among the at least two ports is a fuel inlet port and a second port from among the at least two ports is a fuel outlet port. The fuel cartridge may also include a fuel pouch or the fuel cartridge itself may be the fuel pouch. The fuel supply module may include a fuel circulation structure that circulates the fuel before the fuel is supplied to the stack. The fuel cell system may be equipped with an electronic apparatus and serve as a source of power. | 04-22-2010 |
20100167095 | DIRECT METHANOL FUEL CELL SYSTEM - A direct methanol fuel cell (DMFC) system including: a separator receiving a gas-liquid mixture discharged from a stack and separating the mixture to gas and a liquid; a methanol cartridge storing high concentration methanol; and a fuel mixer for methanol dilution. The separator and the fuel mixer are separate structures, each including an agitator for stirring a liquid. The agitators can be on the same rotation axis. | 07-01-2010 |
20100173211 | FUEL CELL SYSTEM AND FUEL CELL POWER MANAGING METHOD - A fuel cell system and a fuel cell power managing method in which the fuel cell system controls a current output of a fuel cell by adjusting a target voltage value of the fuel cell according to a difference between a current value of the fuel cell and a target constant current value. By doing so, the fuel cell system may allow the fuel cell to stably and constantly output a constant current. | 07-08-2010 |
20100196769 | FUEL CELL SYSTEM - A fuel cell system according to exemplary embodiments of the present invention includes a fuel cell stack that generates electrical energy through the electrochemical reaction of fuel and oxidant, a fuel supply unit for supplying the fuel to the fuel cell stack, and an oxidant supply unit for supplying the oxidant to the fuel cell stack. The fuel supply unit includes a fuel permeation membrane between a space where fuel recovered from the fuel cell stack is positioned and a space where stored fuel is positioned. The fuel cell system enables easy control of the concentration of fuel supplied to the fuel cell stack. | 08-05-2010 |
20100209788 | FUEL CELL SYSTEM - A fuel cell system includes: a fuel cell stack for generating electrical energy by reacting oxidant and mixed fuel, and for discharging non-reacted fuel, oxidant, moisture, and carbon dioxide; a mixer for preparing the mixed fuel by mixing at least a portion of the non-reacted fuel, oxidant and moisture with concentrated fuel and for supplying the mixed fuel to the fuel cell stack; a fuel supply unit for supplying the concentrated fuel to the mixer; an oxidant supply unit for supplying the oxidant to the fuel cell stack; a first heat exchanger between an outlet of the fuel cell stack and the mixer; and a second heat exchanger between the mixer and an inlet of the fuel cell stack. | 08-19-2010 |
20110217604 | Recycler, water management system of fuel cell comprising the same, fuel cell comprising the water management system, and method of measuring water level - A recycler of a fuel cell includes two electrodes, a rotor interposed between the two electrodes, and an insulating container surrounding and receiving the two electrodes and the rotor. A water management system of the fuel cell includes the recycler, and the fuel cell includes the water management system. A method of measuring a water level in the recycler includes measuring a conductivity of water separated in the recycler is measured. | 09-08-2011 |
20110229798 | Connector for fuel cell and fuel cell system including the same - A fuel cell system includes a fuel cell system connector and a fuel cartridge connector. The fuel cell system connector includes an external structure configured to accommodate a connector of a fuel cartridge and an internal structure mounted in the external structure. A contacting surface between the external structure and the internal structure of the fuel cell system connector includes a first nano-processed surface on a fuel supply path. The fuel cartridge connector includes an external structure having a retention key and an internal structure mounted in the external structure. A contacting surface between the external structure and the internal structure of the fuel cartridge connector includes a second nano-processed surface on a fuel supply path. | 09-22-2011 |
20120013196 | Fuel cell system and power managing method of the same - A fuel cell system, which provides output power of at least one of a fuel cell and a battery to a load, selects any one operating mode from among various operating modes of the fuel cell system based on a change in performance of the battery due to use of the battery, and controls supplying of output power of the fuel cell and output power of the battery to the load according to the selected operating mode. | 01-19-2012 |
20120064418 | FUEL CELL SYSTEM FOR IMPROVING FUEL SUPPLY - A fuel cell system includes a fuel cell for generating electric power by using a fuel, a valve module that controls a flow of a low concentration fuel circulating through the fuel cell, and a flow of a high concentration fuel supplied from a fuel storage unit to the fuel cell, a pump for pumping at least one of the low concentration fuel and the high concentration fuel according to a fuel flow control of the valve module; and a mixer for mixing and supplying the low concentration fuel and the high concentration fuel pumped from the pump to the fuel cell. | 03-15-2012 |
20120088170 | Fuel cell system and method of operating the same - A fuel cell system for supplying output power of at least one of a fuel cell and a battery to a load selects one of various operation modes of the fuel cell system based on a change of an output state of the fuel cell and controls the supply of the output power of each of the fuel cell and the battery to the load according to the selected operation mode. | 04-12-2012 |
20120178008 | FUEL CELL SYSTEM AND METHOD OF CONTROLLING REACTION CONDITION OF FUEL IN FUEL CELL - A target value of each of factors in a fuel cell system is determined based on a correspondence relationship of a change in each of the factors determining reaction conditions of fuel in a fuel cell to a change in an external environment of the fuel cell system, and peripheral devices of the fuel cell affecting the reaction conditions of the fuel in the fuel cell are controlled according to a target value of each of the factors. | 07-12-2012 |
20120258385 | METHOD AND APPARATUS FOR MEASURING VOLUME OF LIQUID AND FUEL CELL SYSTEM - The volume of liquid that remains in a liquid storage is calculated by measuring capacitances between several pairs of metal plates attached to each of several corresponding faces of the liquid storage and by combining liquid volumes corresponding to the capacitance based on the current position of the liquid storage. Such a method of measuring the volume of liquid can be used to measure the amount of fuel that remains in a fuel cell system. | 10-11-2012 |
20130065152 | CHANNEL PLATE ASSEMBLY OF STACK FOR FUEL CELL AND METHOD OF MANUFACTURING CHANNEL PLATE ASSEMBLY - A channel plate assembly of a stack for a fuel cell and a method of manufacturing the channel plate assembly. The channel plate assembly of a stack for a fuel cell includes a bridge piece disposed on a channel plate to entirely surround a manifold, and a gasket disposed on the channel plate to cover the bridge piece, wherein the channel plate assembly is manufactured in an integrated fashion. | 03-14-2013 |
20130175114 | HYBRID SILENCER WITH GAS-LIQUID SEPARATING FUNCTION IN FUEL CELL SYSTEM - A hybrid silencer in a fuel cell system includes an expansion chamber connected to a predetermined apparatus of the fuel cell system, where the expansion chamber reduces acoustic noise of a fluid discharged from the predetermined apparatus, a water-absorber disposed inside the expansion chamber, where the water-absorber absorbs a liquid component of a fluid which flows into the expansion chamber; and a perforated silencer which discharges the fluid from which the liquid component is removed by the water-absorber while reducing acoustic noise of the fluid discharged therefrom. | 07-11-2013 |
20130189597 | FUEL CELL SYSTEM AND METHOD OF OPERATING THE SAME AT LOW TEMPERATURE - A fuel cell system includes a fuel cell which generates power using a fuel; peripheral devices for operating the fuel cell and supplying power generated by the fuel cell to loads; and a heating module which heats at least one of the fuel cell and the peripheral devices using heat generated by a semiconductor device attached to the at least one of the fuel cell and the peripheral devices. | 07-25-2013 |
20140114447 | FUEL CELL SYSTEM AND ELECTRONIC DEVICE CONTROLLING THE SAME - A method of operating a fuel cell system which is controlled by an electronic device includes: transmitting a bit stream including a bit string which indicates identification information of the fuel cell system and a bit string which indicates status information of the fuel cell system to the electronic device through a serial communication line; receiving a bit stream including a bit string which indicates control information of the fuel cell system from the electronic device through the serial communication line; obtaining the control information of the fuel cell system from the received bit stream; and controlling power production of a fuel cell by controlling operations of peripheral devices of the fuel cell system based on the obtained control information of the fuel cell system. | 04-24-2014 |
20140159506 | POWER CONVERSION APPARATUS INCLUDING MULTIPLE DC-DC CONVERTERS AND METHOD OF CONTROLLING MULTIPLE DC-DC CONVERTERS - A power conversion apparatus includes a plurality of converters which independently converts a voltage of power output from a power source, a measuring instrument which measures at least one predetermined characteristic value of power to be supplied from the power source to a load, and a controller for enabling or disabling each of the plurality of converters based on the at least one predetermined characteristic value. | 06-12-2014 |