| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 429446000 | Regulation of differential pressure | 63 |
| 20100143816 | FUEL CELL SYSTEM WITH SENSOR FOR DETECTING PRESSURE FLUCTUATIONS IN A FLUID SUPPLY TRAIN - The present invention relates to a fuel cell system with a fluid supply element and/or fluid control element. The fuel cell system includes a fuel cell, an anode train, and a cathode train. The fluid supply element and fluid control elements are disposed within the anode train and/or the cathode train. A sensor for detecting pressure fluctuations and/or pressure peaks in a fluid supply train of the anode and/or the cathode is provided. | 06-10-2010 |
| 20100190080 | FUEL CELL SYSTEM AND ITS CONTROL METHOD - Here is disclosed a fuel cell system comprising: a fuel cell; a fuel gas system which supplies a fuel gas to the fuel cell and circulates the gas discharged from the fuel cell; a purge valve which discharges the gas from the fuel gas system; and control means for controlling the opening/closing operation of the purge valve. The control means controls the opening/closing operation of the purge valve so that impurities partial pressure in the fuel gas system is constant in the entire load region. | 07-29-2010 |
| 20100216045 | FUEL CELL SYSTEM AND CONTROL METHOD THEREOF - Provided is a fuel cell system that can achieve a stable power generation state of a fuel cell after the fuel cell returns from an intermittent operation to a normal operation. The fuel cell system has: a fuel cell; a fuel gas system having a fuel gas supply flow path for flowing fuel gas supplied from a fuel supply source to the fuel cell; a variable pressure regulating valve that variably regulates the pressure of gas flowing through the fuel gas supply flow path; and a purge valve for exhausting gas from the fuel gas system, and the fuel cell system exhausts impurities in the fuel gas system to the outside through the purge valve after the fuel cell shifts from a power generation suspended state to a power generation state. The fuel cell system has a controller that, if an amount of impurities in the fuel gas system increases to exceed a predetermined amount during the power generation suspended state, controls, after the fuel cell shifts from the power generation suspended state to the power generation state, opening and closing action of the variable pressure regulating valve so that the fuel gas supplied to the fuel cell has a pressure greater than a predetermined reference value. | 08-26-2010 |
| 20100233563 | FUEL CELL SYSTEM - The present application provides a technique prevents a regulator arranged on a gas supplying path that supplies gas to a fuel cell installed in a fuel cell system from functioning erroneously, by controlling the pressure increase within the upper stream side of the regulator. The fuel cell system includes a fuel cell, an oxide gas supplying path to supply oxide gas to the fuel cell, a fuel gas supplying path to supply fuel gas to the fuel cell, a secondary regulator arranged on the fuel supplying path, a bypass path communicating the upper stream side path of the secondary regulator with the lower stream side path of the secondary regulator, and a pressure controlling valve that is closed in a case where the pressure difference between the upper stream side path and the lower stream side path is less than a predetermined amount, and opened in a case where the pressure difference between the upper stream side path and the lower stream side path exceeds the predetermined amount. | 09-16-2010 |
| 20110059382 | ANODE LOOP PRESSURE CONTROL IN PEM FUEL CELL SYSTEM - A method of controlling pressure of a fuel gas in a fuel cell stack is disclosed. The method includes establishing a specification for a fuel gas/oxidant gas delta pressure vs. time value, operating the fuel cell stack, monitoring the fuel gas/oxidant gas delta pressure vs. time value and reducing stress resulting from excessive pressure of the fuel gas by implementing at least one of the following: (1) inducing the fuel cell stack to convert excess fuel gas into electrical current; (2) shutting off supply of the fuel gas to the fuel cell stack; and (3) and raising an operating pressure of the fuel cell stack when the fuel gas/oxidant gas delta pressure vs. time value strays beyond the specification. | 03-10-2011 |
| 20110274998 | FUEL CELL SYSTEM AND METHOD FOR CONTROLLING SAME - A fuel cell system | 11-10-2011 |
| 20120107711 | OPERATION CONTROL DEVICE AND OPERATION CONTROL METHOD FOR FUEL CELL POWER PLANT - A fuel cell power plant stops anode gas supply to a fuel cell stack | 05-03-2012 |
| 20120115061 | FUEL SYSTEM AND VEHICLE - The present invention is to provide a fuel system and a vehicle which can improve mountability and assembly ease of parts. | 05-10-2012 |
| 20120135329 | HYDROGEN FED POWER SYSTEM AND METHOD FOR GENERATING POWER - The present invention relates to a hydrogen fed power system comprising: a high-pressure hydrogen container ( | 05-31-2012 |
| 20120189935 | FUEL CELL SYSTEM AND METHOD FOR OPERATING FUEL CELL SYSTEM - A fuel cell system includes a fuel cell, a fuel-gas supplier, a fuel supply path, a shut-off valve, a pressure reducing valve, an auxiliary device, a pressure sensor, a depressurizing device, and a controller. The fuel supply path connects the fuel cell to the fuel-gas supplier. The pressure sensor is configured to detect a pressure in the fuel supply path located downstream of the pressure reducing valve. The depressurizing device is to reduce the pressure in the fuel supply path located downstream of the pressure reducing valve. The controller is configured to control the depressurizing device to reduce the pressure in the fuel supply path located downstream of the pressure reducing valve when the pressure detected by the pressure sensor exceeds a predetermined threshold pressure. | 07-26-2012 |
| 20120328968 | FUEL CELL SYSTEM - A fuel cell system includes a fuel cell, an air supply flow passage, an air exhaust flow passage, a compressor, an expander turbine, an electric motor, a dynamic pressure gas-lubricated bearing device, and a bearing air exhaust supply flow passage. The expander turbine is disposed in the air exhaust flow passage to generate driving energy using air output from the fuel cell. The expander turbine has a rotation shaft shared by the compressor. The electric motor is to rotate the rotation shaft. The dynamic pressure gas-lubricated bearing device is to support the rotation shaft using part of air discharged from the compressor as actuation air. Air passing through the dynamic pressure gas-lubricated bearing device is supplied to the expander turbine through the bearing air exhaust supply flow passage. | 12-27-2012 |
| 20130089801 | FUEL CELL SYSTEM AND METHOD OF CONTROLLING FUEL CELL SYSTEM - A fuel cell system is equipped with an airflow meter that measures an amount of a supplied cathode gas, and a hydrogen circulation pump. A controller instructs the fuel cell to perform a preset reference operation, measures the power consumed by the hydrogen circulation pump, and determines the amount of the supplied cathode gas appropriate for the amount of power consumed by the hydrogen circulation pump. The controller then calculates, the measurement error in the airflow meter and correction value for the measurement error. The controller controls the amount of the supplied cathode gas based on the value measured by the airflow meter after being corrected with the correction value. | 04-11-2013 |
| 20130101914 | FUEL CELL - An anode separator of a fuel cell forms: a plurality of gas flow channels arranged in parallel to let a fuel gas flow to an MEA; a supply passage configured to supply the plurality of gas flow channels with the fuel gas; and a recovery passage configured to recover the fuel gas from the plurality of gas flow channels. The plurality of gas flow channels include: a gas flow channel connects the supply passage and the recovery passage; and a gas flow channel having the supply passage side blocked. | 04-25-2013 |
| 20130183601 | HYDROGEN GAS SUPPLY DEVICE OF FUEL CELL SYSTEM - A hydrogen gas supply device supplies hydrogen gas to a fuel cell stack and includes an electromagnetic pressure regulating valve that regulates the pressure of the hydrogen gas to low pressure. The electromagnetic pressure regulating valve includes a housing, and a valve passage connecting a primary port and a secondary port is formed in the housing. A valve body controls an opening degree of the valve passage and is provided in the housing. A high-pressure sealing member and low-pressure sealing member are provided on an outer periphery of the valve body. The high-pressure sealing member and the low-pressure sealing member are provided in this order from one end side of the valve body to the other end side thereof. The electromagnetic pressure regulating valve further includes a housing pressure equalizing passage connecting the secondary port and a buffer chamber formed between the high-pressure sealing member and the low-pressure sealing member. | 07-18-2013 |
| 20130295482 | HYDROGEN SUPPLY SYSTEM FOR FUEL CELL WITH INTEGRATED MANIFOLD BLOCK - Disclosed is a hydrogen supply system for a fuel cell, which has an integrated manifold block in which components for hydrogen supply are integrated and modulated. In particular, a hydrogen supply line, a hydrogen discharge line, and a hydrogen recirculation line are formed in a manifold block mounted on the outside of a plurality of stack modules of a fuel cell stack. Additionally, components of the hydrogen supply system including components for supplying and discharging hydrogen and components for recirculating hydrogen are integrally mounted in predetermined positions of the hydrogen supply line, the hydrogen discharge line, and the hydrogen recirculation line to modularize the manifold block and the components of the hydrogen supply system. | 11-07-2013 |
| 20130309590 | FUEL CELL SYSTEM - Provided is a fuel cell system capable of preventing a fuel cell from being polarized at a high potential for a long time during start-up. A fuel cell system | 11-21-2013 |
| 20140080025 | FUEL CELL SYSTEM - A fuel cell system includes a fuel cell, a control valve and a controller. The fuel cell is configured to receive anode gas and cathode gas to generate electric power. The control valve is configured to control pressure of the anode gas being fed to the fuel cell through an anode flow channel. The controller controls the control valve to periodically increase and decrease the pressure of the anode gas flowing through the anode flow channel in an area downstream of the control valve. The controller sets an anode pressure differential value for the anode gas resulting from periodic increasing and decreasing of the pressure of the anode gas based on a requested fuel cell output. The controller determines a quantity of liquid in the anode flow channel. The controller decreases the anode pressure differential value that was set based on the requested fuel cell output. | 03-20-2014 |
| 20140093803 | FUEL CELL SYSTEM - A fuel cell system that generates electric power by supplying anode gas and cathode gas to a fuel cell includes a control valve adapted to control the pressure of the anode gas to be supplied to the fuel cell; a buffer unit adapted to store the anode-off gas to be discharged from the fuel cell; a pulsation operation unit adapted to control the control valve in order to periodically increase and decrease the pressure of the anode gas at a specific width of the pulsation; and a pulsation width correcting unit adapted to correct the width of the pulsation on the basis of the temperature of the buffer unit. | 04-03-2014 |
| 20140170518 | PULSATING OPERATION METHOD AND SYSTEM FOR FUEL CELL SYSTEM - A pulsating operation method and system for a fuel cell system that smoothly discharges water remaining in a fuel electrode of a fuel cell and, simultaneously, improves fuel utilization. The method includes performing a pulsation control that controls the magnitude and period of a pulsating operating pressure for hydrogen supplied to an anode of a fuel cell to smoothly discharge the water remaining in the anode, maximize fuel utilization of the anode, and improve operational stability of the fuel cell system. | 06-19-2014 |
| 20140205926 | FUEL CELL SYSTEM AND STARTING METHOD THEREOF - The problem is that a large force is required to open a flow-dividing shut valve provided in an air supply path for supplying the air to a fuel cell stack at a start of a fuel cell system. This problem is solved by reducing a pressure difference between upstream and downstream of the flow-dividing shut valve, before the flow-dividing shut valve is opened, at a start of the fuel cell system. | 07-24-2014 |
| 20140242491 | FUEL CELL SYSTEM INCLUDING DIAGNOSTIC TECHNIQUE FOR UNBALANCED COMPRESSOR - A diagnostic system for determining whether a rotor shaft of a compressor is unbalanced. The compressor includes a displacement sensor that measures the displacement of the rotor shaft as it is rotating. The sensor dynamic frequency signal is sent to a bandpass filter that filters out an eigen-frequency frequency that is a function of shaft elasticity and rotor dynamics. The filtered frequency signal is then rectified by a rectifier to make the filtered frequency signal positive. The rectified signal is then passed through a low pass filter that converts the rectified signal to a DC signal. The DC signal is then sent to a controller that determines if the amplitude of the signal is above a predetermined threshold, which indicates a problem with the balance of the compressor. | 08-28-2014 |
| 20140248551 | CONTROL DEVICE FOR FUEL CELL SYSTEM - A fuel cell system includes, an oxidant feeder configured to supply an oxidant to a fuel cell, an oxidant passage which communicates with the fuel cell, a bypass passage which branches from the oxidant passage and along which part of the oxidant flows so as to bypass the fuel cell, a bypass valve which is provided in the bypass passage, an oxidant quantity-of-flow control unit which is configured to supply the quantity of flow of the oxidant corresponding to an amount of electricity required by the fuel cell, and an oxidant quantity-of-flow control unit for a sound vibration mode configured to supply a constant quantity of flow of the oxidant, and further includes a bypass valve control unit configured to control the bypass valve according to a requirement of the fuel cell when the oxidant quantity-of-flow control unit for the sound vibration mode controls the oxidant feeder. | 09-04-2014 |
| 20140272658 | Fluidic Components Suitable for Fuel Cell Systems Including Pressure Regulators and Valves - The present invention is directed to devices for controlling the fluid flow and pressure, including adjustable pressure regulators, pressure regulators with an inlet restrictor, semi-automatic valve and pressure regulator with a by-pass valve. The adjustable pressure regulators have a movable shuttle, shuttle housing, a high pressure diaphragm, a low pressure diaphragm and a fluidic conduit connecting the inlet to the outlet. One or more of these components are adjusted to modify the outlet pressure of the regulator. The inlet restrictor allows incoming fluid to enter the pressure regulators when the pressure of the incoming fluid is higher than a threshold level. The positioning the inlet restrictor can be used to prevent a partial vacuum from forming inside a pressure regulator. The semi-automatic valve is opened manually but closes automatically when fluid flowing through the valve is insufficient to keep the valve open. The semi-automatic valve can also be a semi-automatic electrical switch. The by-pass valve directs the flow to bypass the pressure regulator, when the flow is slow or has low pressure. | 09-18-2014 |
| 20140335435 | FUEL CELL SYSTEM, AND CONTROL METHOD FOR FUEL CELL SYSTEM - A fuel cell system includes: a fuel cell supplied with fuel gas for power generation; a fuel supply flow passage flowing fuel gas, supplied from a fuel supply source, to the fuel cell; a pressure regulating valve regulating a pressure of fuel gas flowing through the fuel supply flow passage; a fuel circulation flow passage returning gas, emitted from the fuel cell, to the fuel supply flow passage; a circulation pump delivering gas in the fuel circulation flow passage to the fuel supply flow passage; an emission valve emitting gas in the fuel circulation flow passage to an outside; and a control device controlling the pressure regulating valve, the circulation pump and the emission valve such that the sum of losses of crossover hydrogen, circulation pump power and purge hydrogen is minimum while a hydrogen stoichiometric ratio required for power generation of the fuel cell is ensured. | 11-13-2014 |
| 20140349208 | FUEL CELL SYSTEM - In a fuel cell system including a load and a fuel cell stack connected to the load and supplying an anode gas and a cathode gas to the fuel cell stack to generate power according to the load, the fuel cell system includes, a pressure setting unit configured to set a pressure of the anode gas higher when the load is high as compared with when the load is low, a stagnation point determination unit configured to determine, according to a state of power generation of the fuel cell stack, whether or not a nitrogen stagnation point is left in a reaction flow path within the fuel cell stack, and an operation control unit configured to performs an operation while preventing the pressure of the anode gas from being lowered when a required load is lowered in a state where the nitrogen stagnation point is left. | 11-27-2014 |
| 20140370412 | Charging Device for a Fuel Cell, in Particular of a Motor Vehicle - A charging device for a fuel cell includes a turbine having a housing part with a receiving chamber in which a turbine wheel of the turbine is received so as to be rotatable relative to the housing part about an axis of rotation. The turbine wheel includes impeller vanes via which a medium, in particular a gaseous waste gas of the fuel cell, can flow against the turbine wheel in an inlet region, and which are curved forwards at least in the inlet region. | 12-18-2014 |
| 20150017562 | FUEL CELL SYSTEM AND CONTROL METHOD OF FUEL CELL SYSTEM - A fuel cell system includes a pressure regulating valve configured to control a pressure of an anode gas to be supplied to a fuel cell, a buffer unit configured to store an anode off-gas discharged from the fuel cell, and a purge valve configured to control an amount to be discharged to an outside of the anode off-gas stored in the buffer unit. The pressure of the anode gas periodically increases/decreases by periodically opening/closing the pressure regulating valve. The purge valve is controlled so that a purge flow rate increases more during pressure reduction of the pulsation operation than during pressure increase in pulsation operation control. | 01-15-2015 |
| 20150030952 | DYNAMIC DECOMPRESSION CONTROL FOR HIGH PRESSURE SEALS - The present disclosure is directed to a method and system for dynamically controlling seal decompression. The method includes monitoring a set of parameters associated with an operation of a seal, wherein the set of parameters includes a maximum pressure subjected to the seal and an exposure time at the maximum pressure, calculating a target pressure ramp down rate based on at least one of the maximum pressure and the exposure time, and decreasing a pressure about the seal at a decompression rate that is based on the target pressure ramp down rate. The system includes a controller having a memory device, a graphical user interface, at least one pressure transmitter configured to monitor the pressure about the seal, and a processor, wherein the processor is configured to detect a maximum exposure pressure and exposure time at maximum pressure about the seal and control a pressure ramp down about the seal based on the maximum exposure pressure and the exposure time detected in order to prevent explosive decompression of the seal. | 01-29-2015 |
| 20150030953 | FUEL CELL SYSTEM - A fuel cell system includes a fuel cell stack, a compressor, a cathode flow passage, a bypass flow passage branching from the cathode flow passage, thereby bypassing the stack, a bypass valve adjusting a bypass flow rate, a stack flow rate sensor detecting a flow rate to the stack, and a compressor flow rate sensor detecting a flow rate into the compressor. A flow rate for the stack depending on a state of a fuel cell and a flow rate the compressor controls depending on a requirement different from that of the stack are calculated. A control unit controls, when the flow rate required from the compressor is more than that required by the stack, the compressor based on the flow rate required from the compressor and a detected compressor flow rate, and controls the bypass valve based on the flow rate required by the stack and a detected stack flow rate. | 01-29-2015 |
| 20150056533 | FUEL CELL SYSTEM - A fuel cell system includes a target pressure setting unit configured to periodically and repeatedly set a target upper limit pressure and a target lower limit pressure as a target pressure of anode gas. An upper limit pressure setting unit is configured to set the smaller one of an upper limit value based on durability performance and an upper limit value based on output performance as an upper limit pressure of the anode gas. The target pressure setting unit sets a value smaller than the upper limit value as the target upper limit pressure when the upper limit value based on the durability performance of the fuel cell is selected as the upper limit pressure of the anode gas, and sets a pressure higher than the upper limit value as the target upper limit pressure when the upper limit value based on the output performance is selected. | 02-26-2015 |
| 20150086894 | FUEL CELL SYSTEM - A fuel cell system comprises: a turbo type oxidizing agent pump, the rotary shaft of which is pivotally supported by an air bearing to take in and supply an oxidizing agent gas to a fuel cell by the rotary motion; an actual flow rate detection means for the oxidizing agent gas; a pressure adjustment means for the oxidizing agent gas; a rotary speed monitoring means for the oxidizing agent pump; and a control means which, when the rotary speed of the oxidizing agent pump is within the range of the minimum rotary speed that allows the rotary shaft to be pivotally supported by the air bearing, if the actual flow rate of the oxidizing agent gas is larger than a target flow rate, increases the pressure of the oxidizing agent gas via the pressure adjustment means. | 03-26-2015 |
| 20150132677 | SOLID OXIDE FUEL CELL - A solid oxide fuel cell or a solid oxide electrolyzing cell, including a plurality of cathode-anode-electrolyte units, each CAE-unit having a first electrode for an oxidizing agent, a second electrode for a combustible gas, and a solid electrolyte between the first electrode and the second electrode and an interconnect between the CAE-units. The interconnect including oxidant inlet and outlet sides defining an oxidant flow direction of the oxidizing agent flow, a first gas distribution element. The first gas distribution element contacts the second electrode of the CAE-unit, and a second gas distribution element with oxidizing agent has channels connecting the oxidant inlet and outlet sides. The oxidizing agent channels are in contact with the first electrode of an adjacent CAE-unit, and a least one bypass channel for the oxidant flow arranged such that the bypass channel is not in contact with the first electrode. | 05-14-2015 |
| 20150140465 | DEVICE FOR SUPPLYING AT LEAST ONE FUEL CELL - A supply device for supplying at least one fuel is provided. The supply device includes a first fluid circuit and a second fluid circuit, the former to supply the/each fuel cell with fuel and the latter to supply the/each fuel cell with combustion agent. The first circuit includes a first supply line having a first solenoid valve and a first starter configured to allow for the circulation of fluid in the first circuit towards the/each fuel cell when the electrical control of the first solenoid valve is inoperative. The second circuit includes a second supply line having a second solenoid valve and a second starter configured to allow for the circulation of fluid in the second circuit towards the/each fuel cell when the electrical control of the second solenoid valve is inoperative. The supply device includes at least one pressure-actuated reducer arranged on the first circuit and actuated by a pressure in the second circuit. | 05-21-2015 |
| 20150295255 | PURGE CONTROL SYSTEM AND METHOD FOR FUEL CELL - A purge control system and method is provided. In particular, one or more sensors measure pressures of an anode and a cathode of a fuel cell stack. A controller, then controls the pressures of the anode and the cathode so that a pressure difference between the anode and the cathode is maintained at a predetermined reference differential pressure. The controller also determines an opening time and an opening cycle according to an output of a fuel cell stack necessary for a vehicle, and opens and closes a hydrogen purge valve according to the determined opening time and opening cycle. | 10-15-2015 |
| 20150333347 | FUEL CELL DEVICES FOR FIRE AND/OR EXPLOSION PREVENTION - Described are fuel cell/inerting systems ( | 11-19-2015 |
| 20150333348 | METHOD AND APPARATUS FOR ADJUSTING OXYGEN PRESSURE OF FUEL CELL SYSTEM - Disclosed are a method and an apparatus for adjusting a partial pressure of oxygen that is supplied to a fuel cell system. The oxygen partial pressure may be adjusted by primarily increasing an SR of air and by secondarily increasing a closing ratio of an opening and closing valve when a concentration of oxygen in the air is detected to be reduced. The oxygen partial pressure adjusting device of a fuel cell system includes: an air supply; a fuel supply; an oxygen sensor that is installed in an air supply line and detect a concentration of oxygen; an opening and closing valve and adjust an air supply pressure; and a controller that adjusts a partial pressure of oxygen using the opening and closing valve and a concentration of oxygen that is detected by the oxygen sensor. | 11-19-2015 |
| 20150349358 | FUEL CELL SYSTEM AND CONTROL METHOD FOR THE SAME - A fuel cell system includes a fuel cell, an air supplier, an air passage connected to the fuel cell, air supplied from the air supplier flowing in the air passage, a bleed passage branched off from the air passage on a side upstream of the fuel cell and joining the air passage on a side downstream of the fuel cell, part of the air supplied by the air supplier flowing in the bleed passage in such a manner as to circumvent the fuel cell, a bleed valve provided in the bleed passage, the bleed valve regulating the amount of air flowing in the bleed passage, an air supplier control unit which controls the air supplier to supply a predetermined amount of air, a wetness reduction determination, unit which determines whether or not it is necessary to reduce a degree of wetness of the fuel cell, and a bleed amount control unit which reduces an opening of the bleed valve when the degree of wetness of the fuel cell needs to be reduced. | 12-03-2015 |
| 20150349359 | FUEL CELL SYSTEM - A fuel cell system sets the larger one of a stack request compressor supply flow rate calculated based on a request of a fuel cell stack and a system request compressor supply flow rate calculated based on a request by the fuel cell system as a target compressor supply flow rate and controls a compressor according to the target compressor supply flow rate. The fuel cell system also controls a bypass valve based on a stack supply flow rate and a target stack supply flow rate to be supplied to the fuel cell stack. The fuel cell system fixes the bypass valve or limits the drive of the bypass valve when the system request compressor supply flow rate is set as the target compressor supply flow rate and the stack supply flow rate becomes smaller than the target stack supply flow rate. | 12-03-2015 |
| 20150357661 | METHOD FOR DETECTING LEAKAGE OF A REDUCING FLUID THROUGHOUT AN ELECTROLYTE MEMBRANE OF AN ELECTROCHEMICAL CELL - A method for detecting leakage of a reducing fluid throughout an electrolyte membrane of an electrochemical cell is provided. The method includes the following consecutive steps: supplying the cell with anode and cathode streams; abrupt and controlled variation of at least one of the following parameters: the pressure of the anode stream in the anode channel, the pressure of the cathode stream in the cathode channel, the flow rate of the anode stream into the anode channel, the flow rate of the cathode stream into the cathode channel, and the strength of the current exchanged between the two sides of the membrane; measurement of a first reducing fluid concentration in a first stream, including the cathode stream leaving the cathode channel; and deducing the presence or absence of leakage on the basis of the variation in the first measured concentration of reducing fluid over time. A corresponding fuel cell system is also provided. | 12-10-2015 |
| 20150362130 | Device for storing and delivery of a liquid and/or gaseous medium under pressure, as well as a fuel energy conversion device and method for assembling a device for storing and delivery of a liquid and/or gaseous medium under pressure - The present invention relates to a device for the storage and delivery of liquid and/or gaseous media under pressure, having a media container ( | 12-17-2015 |
| 20150364778 | FUEL CELL SYSTEM AND METHOD FOR CONTROLLING THE SAME - A fuel cell system and a method for controlling the fuel cell system are provided. The fuel cell system includes a compressor that is configured to supply air and a humidifier that includes a supply portion connected to the compressor and an air supply pipe to supply moisture to the supplied air and supply the humidified air to a fuel cell stack. An exhaust portion is configured to receive air exhausted from the fuel cell stack, discharge moisture from the received air to the supply portion, and discharge moisture-deprived air to an exhaust pipe. A valve installed in the air supply pipe is disposed between the compressor and the humidifier and a bypass pipe which branches off at the valve is connected to the exhaust pipe. | 12-17-2015 |
| 20160006049 | SYSTEM AND METHOD OF CONTROLLING AIR BLOWER FOR FUEL CELL VEHICLE - A system and method of controlling an air blower for a fuel cell vehicle are provided. The method includes determining an operation amount of an air blower to secure a sufficient air flow rate under present operating conditions and obtaining information regarding clogging of an air channel or information regarding a back pressure using the operation amount of the air blower. In addition, a maximum operating range of the air blower is changed based on whether a present state is an air channel-clogged state or a back pressure-increased state. | 01-07-2016 |
| 20160013500 | METHOD AND APPARATUS FOR DETECTING DEFECTS OF FUEL CELL MEMBRANE-ELECTRODE ASSEMBLY | 01-14-2016 |
| 20160020474 | DRIVING CONTROL METHOD AND SYSTEM OF FUEL CELL SYSTEM - A driving control method and system of a fuel cell system are provided. The method includes monitoring an exterior temperature. In addition, the method includes increasing hydrogen pressure at an anode side of a fuel cell stack when the exterior temperature is less than a preset exterior temperature during the monitoring. | 01-21-2016 |
| 20160020475 | Mixed-Reactant Fuel Cells with Selective Electrodes - A mixed reactant fuel cell (MRFC) including a MRFC-optimized electrocatalyst utilizing a combination of selective catalysts and selective fuel distributors. | 01-21-2016 |
| 20160043414 | METHODS FOR TESTING ANODE INTEGRITY DURING FUEL CELL VEHICLE OPERATION - A system and methods are provided for testing anode integrity during vehicle operation. In one particular example, the system and methods allow for anode leak tests during vehicle operation by temporarily reducing fuel cell power while supplementing the fuel cell power reduction with battery power to meet operating demands. In this way, an anode leak test can be performed even during highway driving when operating demands may be particularly high. | 02-11-2016 |
| 20160049672 | FUEL CELL SYSTEM AND METHOD OF CONTROLLING FUEL CELL SYSTEM - A fuel cell system includes: a compressor configured to adjust a flow rate of a cathode gas to be supplied to a fuel cell; a pressure regulating valve configured to adjust a pressure of the cathode gas to be supplied to the fuel cell; a target pressure calculating unit configured to calculate a target pressure of the cathode gas to be supplied to the fuel cell while taking into consideration a load of the fuel cell and a heat protecting requirement of the fuel cell system; a target pressure calculating unit configured to calculate a target pressure of the cathode gas to be supplied to the fuel cell while taking into consideration a load of the fuel cell and a heat protecting requirement of the fuel cell system; a target flow rate calculating unit configured to calculate a target flow rate of the cathode gas to be supplied to the fuel cell in accordance with the load of the fuel cell and the target pressure of the cathode gas; and a control unit configured to control the compressor and the pressure regulating valve in accordance with the target pressure and the target flow rate of the cathode gas. | 02-18-2016 |
| 20160118678 | METHOD TO REDUCE PRESSURE WHEN INJECTORS ARE STUCK OPEN UNDER FAULTED CONDITIONS AND REMEDIAL ACTION TO PREVENT WALK-HOME INCIDENT - A method for controlling a fuel cell system, capable of quickly detecting the pressure rise caused by a faulted open anode injector, reducing pressure in the fuel cell stack when the fault occurs, and taking remedial action to allow continued operation of the fuel cell stack, and militate against a walk-home incident. | 04-28-2016 |
| 20160133962 | FUEL CELL SYSTEM AND VEHICLE EQUIPPED WITH FUEL CELL - A fuel cell system used in a vehicle equipped with a fuel cell includes: a fuel cell; a fuel gas supply portion which supplies a fuel gas to the fuel cell; a fuel gas discharge portion which discharges exhaust fuel gas from the fuel cell; and a control unit, in which, when an operation of the fuel cell is ended, the control unit performs (a) an exhaust process of discharging the exhaust fuel gas of the fuel cell to reduce a pressure, and (b) a process of increasing a partial pressure of the fuel gas in the fuel cell by supplying the fuel gas to the fuel cell after the exhaust process. | 05-12-2016 |
| 20160133974 | FUEL CELL SYSTEM AND CONTROL METHOD OF FUEL CELL SYSTEM - A fuel cell system includes: a fuel cell outputting a current; a supply unit supplying oxidant gas; a flow-amount measurement unit measuring a flow amount of the oxidant gas; and a controller that feed-back controls the supply unit such that a measured flow-amount value converges toward a target flow-amount value, wherein the controller determines an acceptable current value in accordance with the measured flow-amount value, restricts the current to the acceptable current value or less, controls the current in accordance with a requested current value of the fuel cell; and performs a changing-suppression processing, when a condition continues for a predetermined period, the condition including that a changing width of the requested current value is equal to or less than a first value and a difference between the requested current value and the acceptable current value is equal to or less than a second value. | 05-12-2016 |
| 20160141654 | FUEL CELL SYSTEM AND AIR SYSTEM ABNORMALITY DETERMINATION METHOD - An object is to allow even a temporary increase in air pressure to be diagnosed as an abnormality. There is provided a fuel cell system including a fuel cell. The fuel cell system comprises an air system that is configured to supply the air to the fuel cell and discharge the air from the fuel cell; a pressure detector that is configured to detect an internal pressure in the air system; a pressure reduction controller that is configured to reduce the internal pressure in the air system to a target pressure reduction value, when the detected pressure becomes higher than a first abnormality detection value during a predetermined time period (S | 05-19-2016 |
| 20160149235 | MODULAR FUEL CELL AND FUEL SOURCE - A fuel cell power module is coupled to a fuel supply reactor module by way of an adaptor which includes some of the control elements for controlling reaction of reactants in the reactor module. The adaptor includes a housing and a first connection interface in the housing for detachably coupling the adaptor to a fuel cell power module fuel inlet port and a second connection interface in the housing for detachably coupling the adaptor to a reactor module fuel outlet port. A fluid line extends between the first connection interface and the second connection interface. The adaptor includes a motive unit of a flow control mechanism configured to provide motive power to a flow circuit of a reactor module when the reactor module is coupled to the adaptor. The adaptor enables a fuel cell power module to be interfaced with different types of reactor modules having different form factor and different control requirements. | 05-26-2016 |
| 20160149242 | FUEL CELL SYSTEM AND METHOD OF CONTROLLING FUEL CELL SYSTEM - A fuel cell system that generates power by supplying anode and cathode gases to a fuel cell, comprising a compressor configured to adjust a flow rate of the cathode gas supplied to the fuel cell, a relief valve configured to adjust a pressure of the cathode gas supplied to the fuel cell, a pulsation operation unit configured to pulsate an anode gas pressure, a target flow rate setting unit configured to set a target flow rate of the cathode gas on the basis of a request from the fuel cell, a first target pressure setting unit configured to set a first target pressure of the cathode gas on the basis of a request from the fuel cell, a second target pressure setting unit configured to set a second target pressure of the cathode gas for maintaining a pressure difference between an anode and a cathode of the fuel cell within a predetermined allowable pressure difference range, a target pressure setting unit configured to set the higher one of the first and second target pressures as a target pressure, and a control unit configured to control the compressor and the relief valve on the basis of the target flow rate and the target pressure. The control unit controls the compressor on the basis of the target flow rate and a limitative pressure obtained by limiting pulsation of the target pressure when the target pressure is pulsated in response to pressure pulsation of the anode gas. | 05-26-2016 |
| 20160164120 | METHOD AND ELECTROCHEMICAL CELL FOR MANAGING ELECTROCHEMICAL REACTIONS - A method and/or electrochemical cell for utilising one or more gas diffusion 5 electrodes (GDEs) in an electrochemical cell, the one or more gas diffusion electrodes have a wetting pressure and/or a bubble point exceeding 0.2 bar. The one or more gas diffusion electrodes can be subjected to a pressure differential between a liquid side and a gas side. A pressure on the liquid side of the GDE over the gas side does not exceed the wetting pressure of the GDE during 10 operation (in cases where a liquid electrolyte side has higher pressure), and/or a pressure on the gas side of the GDE over the liquid side, does not exceeds the bubble point of the GDE (in cases where the gas side has the higher pressure). | 06-09-2016 |
| 20160164121 | FUEL CELL SYSTEM - Disclosed herein is a fuel cell system. The fuel cell system includes: a turbocharger configured to receive and pressurize air discharged from an outlet of a fuel cell and supply the pressurized air to an inlet of the fuel cell; a plurality of valves configured to be provided at an inlet and an outlet of the turbocharger to control an amount of air supplied to the turbocharger in the air discharged from the outlet of the fuel cell and control a pressure of air supplied from the turbocharger to the inlet of the fuel cell; and a controller configured to calculate an air pressure required for the fuel cell and control an opening of the valves based on the calculated air pressure required for the fuel cell. | 06-09-2016 |
| 20160172693 | PERCEIVING METHOD AND SYSTEM OF STACK STATE FOR FUEL CELL SYSTEM | 06-16-2016 |
| 20160190612 | FLUIDIC COMPONENTS SUITABLE FOR FUEL CELL SYSTEMS INCLUDING PRESSURE REGULATORS AND VALVES - The disclosure teaches controlling the fluid flow and pressure, including adjustable pressure regulators, pressure regulators with an inlet restrictor, semi-automatic valve and pressure regulator with a by-pass valve which use one or more of movable shuttle, shuttle housing, a high pressure diaphragm, a low pressure diaphragm and a fluidic conduit connecting the inlet to the outlet. One or more of these implementations adjust to modify the outlet pressure of the regulator. The inlet restrictor allows incoming fluid to enter the pressure regulators when the pressure of the incoming fluid is higher than a threshold level. The semi-automatic valve is opened manually but closes automatically when fluid flowing through the valve is insufficient to keep the valve open. The semi-automatic valve can also be a semi-automatic electrical switch. The by-pass valve directs the flow to bypass the pressure regulator, when the flow is slow or has low pressure. | 06-30-2016 |
| 20160190618 | FUEL CELL SYSTEM AND CONTROL METHOD FOR FUEL CELL SYSTEM - A fuel cell system includes a compressor for supplying the cathode gas to the fuel cell, an anode gas discharge system for discharging anode off-gas discharged from the fuel cell into a cathode gas flow passage, a pulsating operation control unit for causing a pressure of the anode gas to pulsate based on an operating state of the fuel cell, a purge control unit for purging the anode off-gas into the cathode gas flow passage based on an impurity concentration of an anode of the fuel cell and a pressure of the anode, and a compressor control unit for controlling the compressor based on a purge flow rate controlled by the purge control unit, and the purge control unit for setting the pressure of the anode to a predetermined value determined according to a pulsating state of the anode gas. | 06-30-2016 |
| 20160197366 | SYSTEMS AND METHODS FOR DETECTING LEAKS IN A FUEL CELL SYSTEM | 07-07-2016 |
| 20160197367 | FUEL CELL SYSTEM AND METHOD FOR CONTROLLING FUEL CELL SYSTEM | 07-07-2016 |
| 20160254555 | FUEL CELL SYSTEM | 09-01-2016 |
| 20160380293 | METHOD FOR CONTROLLING OPERATION PRESSURE OF FUEL CELL SYSTEM - A control method of an operation pressure of a fuel cell system maintains a differential pressure between a hydrogen side and an air side of a fuel cell stack to minimize a crossover amount of hydrogen while allowing hydrogen purge and reduces an exhausted hydrogen amount when a purge valve is opened at the time of purging hydrogen using a differential pressure of an anode outlet and a cathode outlet to improve a hydrogen utilization rate and system efficiency. According to the control method, pressures of a cathode inlet and a cathode outlet of the fuel cell stack and a pressure of an anode outlet are controlled such that the pressure of the anode outlet of the fuel cell stack is lower than the pressure of the cathode inlet and higher than the pressure of the cathode outlet. | 12-29-2016 |
| 20190148746 | HYDROGEN CIRCULATION SYSTEM FOR FUEL CELL | 05-16-2019 |
