Abstract: A fuel cell system includes: a fuel cell; an anode gas supply flow path for supplying an anode gas to the fuel cell; an anode gas discharge flow path for discharging an anode off gas from the fuel cell; an anode gas circulation flow path for connecting the anode gas supply flow path and the anode gas discharge flow path to each other; a circulation device provided on the anode gas circulation flow path and serving for supplying the anode off gas to the anode gas supply flow path; and a controller. When liquid water is residing in the circulation device, the controller controls a circulation flow rate of the circulation device to discharge the liquid water residing in the circulation device. The controller restricts an increasing rate of the circulation flow rate of the circulation device if it is decided that a quantity of the liquid water residing in the circulation device is equal to or more than a specified value.

Abstract: When a first timing at which a fuel gas is injected to a fuel gas supply flow path by an injector and a second timing at which water residing on a circulation flow path is discharged by controlling rotating speed of a circulation pump coincide with each other, a controller performs either: (i) a first process of operating the circulation pump at a preset RPM without injecting the fuel gas to the fuel gas supply flow path by the injector; or (ii) a second process of injecting the fuel gas to the fuel gas supply flow path by the injector and operating the circulation pump at an RPM lower than the preset RPM.

Abstract: A fuel cell system has a battery, a gas supply portion, a temperature acquisition portion configured to acquire a presumed temperature that is presumed to reach during the operation stop of the fuel cell; and a scavenaing controlling portion. When it is determined that the presumed temperature is a predetermined temperature or more at the time of the operation stop of the fuel cell, the scavenging controlling portion performs the stop-time scavenging operation with a first scavenging ability; and when it is determined that the presumed temperature is less than the predetermined temperature, the scavenging controlling portion performs the stop-time scavenging operation with a second scavenging ability higher than the first scavenging ability.

Abstract: In a fuel cell system which includes a high-electricity multiple-phase converter, noise generated due to an increase in reactor vibrations and due to a sound pressure increase caused by a plurality of reactors is effectively inhibited, and silence is improved. A fuel cell system includes a multiple-phase converter provided between a fuel cell and a load device. The fuel cell system includes: selecting means (e.g., a controller) for selecting a driving phase of the multiple-phase converter in accordance with the load of the load device; and driving means (e.g., a controller) for driving a plurality of driving phases, when selected by the selecting means, at carrier frequencies so that these driving phases are nearly opposite to each other.

Abstract: A fuel cell system includes: a fuel cell; a fuel supply source; a supply passage; a circulation passage; a gas-liquid separator; a discharge passage; a discharge valve; a differential pressure detecting portion; and a control unit, wherein the control unit estimates a flow rate of a fuel gas.

Abstract: A resin molded body with an RFIC package incorporated therein is insert-molded incorporating therein a metal core material and an RFIC element connected to the metal core material. The RFIC element includes a ceramic multi-layer substrate that incorporates therein a coil conductor, and an RFIC chip mounted on a mounting surface of the multi-layer substrate. The RFIC chip is connected to the coil conductor by nano-particle bonding or ultrasonic bonding. The coil conductor is coupled with the core material in a magnetic field coupling scheme.

Abstract: A fuel cell system includes; a fuel cell which generates electricity by using a fuel gas and an oxidant gas as reaction gases; current control means which controls current of a fuel cell; voltage control means which controls voltage of the fuel cell; and heat value control means which calculates a heat value required by the fuel cell system and decides a target current value of the current control means and a target voltage value of the voltage control means so as to generate the calculated necessary heat amount, thereby controlling the heat value. Thus, it is possible to supply a heat required for the fuel cell system without increasing the size of the fuel cell system.

Abstract: An object is to perform a purge at an appropriate timing. There is provided a fuel cell system mounted on a vehicle. The fuel cell system comprises a gas supplier that is configured to supply a purge gas into a fuel cell; and a controller that is configured to control the gas supplier and perform a purge with the purge as at a stop time of the vehicle. The controller obtains an ambient temperature in a driving state of the vehicle a plurality of times. In a case where an ambient temperature obtained last time among the ambient temperatures obtained in the driving state is lower than a predetermined reference value, the controller performs the purge with enhancing a purging capacity, compared with a case where the ambient temperature obtained last time is higher than the predetermined reference value.

Abstract: When an actual output value is less than an output command value, a current command value is increased. When the actual output value is equal to or greater than the output command value, whether the actual output value is within a range of a dead hand is determined. When the actual output value is outside the range of the dead hand, the current command value is decreased. When the actual output value is within the range of the dead band, the current command value is maintained.

Abstract: An object is to reduce the noise and the vibration caused in operation of an injector in a non-power generation state of a fuel cell. There is provided a fuel cell system comprising fuel cells configured such that each fuel cell includes an anode, an electrolyte membrane and a cathode; an injector that is configured to supply hydrogen to the anode; and a controller that is configured to control operation of an injector to make pressure of the anode reach a target pressure. In a non-power generation state that is after a start of the fuel cell system but is before power generation of the fuel cells, the controller sets a second target pressure that is higher than a first target pressure to the target pressure and controls operation of the injector to make the pressure of the anode equal to the second target pressure.

Abstract: At an ordinary stop time of a fuel cell system, a controller of the fuel cell system completes an ordinary stop process that includes at least one of a water drainage process that discharges water from at least one of the fuel gas flow path and the oxidizing gas flow path and a cathode sealing process that seals the oxidizing gas flow path, and subsequently stops the fuel cell system. When the fuel cell system satisfies a predetermined emergency stop condition, the controller does not perform at least part of the ordinary stop process but performs an emergency stop process that sets the fuel cell system to be restarted after elapse of a first time period since a stop of the fuel cell system and subsequently stops the fuel cell system. The controller restarts the fuel cell system after elapse of the first time period since stop of the fuel cell system and performs a restart process that performs the ordinary stop process.

Abstract: A thermally conductive silicone adhesive composition for a reactor, having good fluidity even when containing a large amount of thermally conductive filler to obtain a thermally conductive silicone adhesive composition, permitting potting of fine substrates, having good properties after curing, having little change in properties even with heat or moist-heat aging, and giving good adhesiveness to metals and organic resins, and a reactor potted by this composition, can be provided by making a thermally conductive silicone adhesive composition having a viscosity of 100 mPa·s at 25° C. and containing a liquid organohydrogenpolysiloxane having 2-10 hydrogen atoms bonded with silicon atoms in the molecule, containing no alkoxy groups, having at least one epoxy group bonded with a silicon atom via an alkylene group, having a polysiloxane degree of polymerization of 15 or lower, and containing a polysiloxane skeleton having a cyclic structure.

Abstract: A cell monitor connector is provided that can prevent detachment of the cell monitor connector from a fuel cell device with a simple configuration. A connector 4 for measuring voltage has a housing 41 with a plurality of slits 45 formed therein and an end of a separator 21 of a plurality of fuel cells 2 can be inserted into the slits 45. The housing 41 has a rib 46R at at least one end in the stacking direction of the fuel cells 2 such that the rib 46R projects in a direction perpendicular to the stacking direction.

Abstract: When a first timing at which a fuel gas is injected to a fuel gas supply flow path by an injector and a second timing at which water residing on a circulation flow path is discharged by controlling rotating speed of a circulation pump coincide with each other, a controller performs either: (i) a first process of operating the circulation pump at a preset RPM without injecting the fuel gas to the fuel gas supply flow path by the injector; or (ii) a second process of injecting the fuel gas to the fuel gas supply flow path by the injector and operating the circulation pump at an RPM lower than the preset RPM.

Abstract: A fuel cell system includes: a fuel cell; an anode gas supply flow path for supplying an anode gas to the fuel cell; an anode gas discharge flow path for discharging an anode off gas from the fuel cell; an anode gas circulation flow path for connecting the anode gas supply flow path and the anode gas discharge flow path to each other; a circulation device provided on the anode gas circulation flow path and serving for supplying the anode off gas to the anode gas supply flow path; and a controller. When liquid water is residing in the circulation device, the controller controls a circulation flow rate of the circulation device to discharge the liquid water residing in the circulation device. The controller restricts an increasing rate of the circulation flow rate of the circulation device if it is decided that a quantity of the liquid water residing in the circulation device is equal to or more than a specified value.

Abstract: A fuel cell system includes a control unit that estimates a discharge amount of the fuel gas partially discharged from the fuel cell partially discharged during an opening period of the discharge valve based on a lost amount of the fuel gas during the opening period and a consumed amount of the fuel gas by electric generation of the fuel cell during the opening period, wherein a pressure increase period during which the pressure increases and a pressure decrease period during which the pressure decreases exist due to intermittent injection of the fuel gas, and the control unit estimates the lost amount of the fuel gas based on a decrease rate of the pressure during the pressure decrease period within the opening period, and based on an assumed decrease rate of the pressure during the pressure increase period within the opening period.

Abstract: A fuel cell system includes a control unit configured to perform air-conditioning-system preparation control, wherein, under the air-conditioning-system preparation control, when an air conditioning system is not requested to heat air, it is determined whether or not a coolant within a coolant circulation passage is capable of being supplied to an air conditioning circuit, when the coolant within the coolant circulation passage is not capable of being supplied to the air conditioning circuit, the heater is operated to maintain a first predetermined temperature or higher of the coolant within the air conditioning circuit, and When the coolant within the coolant circulation passage is capable of being supplied to the air conditioning circuit, the air-conditioning water pump is operated to draw the coolant from the coolant circulation passage into the air conditioning circuit and to maintain the first predetermined temperature or higher of the coolant within the air conditioning circuit.

Abstract: Disclosed is a technology for ensuring the safety of a vehicle on which a fuel cell is mounted and the convenience of a user. In a fuel cell system which is able to be mounted on a movable body, it is determined whether or not the movement of the movable body is stopped and the fuel cell system is operated when an opening instruction for opening a filling port for filling a fuel gas storage portion with fuel gas is received. When it is determined that the movement of the movable body is stopped and the fuel cell system is operated, a main stop valve controlling the supply of the fuel gas to the cell stack from the fuel gas storage portion is closed, and then the filling port is opened.

Abstract: There are provided a an anode-side water discharge controller that controls a circulation flow rate of the anode gas pump so as to discharge anode-side liquid water residing in the anode-side flow path, and a cathode-side water discharge controller that controls a supply flow rate of the cathode gas pump so as to discharge cathode-side liquid water residing in the cathode-side flow path. The anode-side water discharge controller and the cathode-side water discharge controller execute water discharge by running a pre-selected one of the anode gas pump and the cathode gas pump, and then running the other of the anode gas pump and the cathode gas pump.

Abstract: To provide a technique that allows prompt detection of leakage of fuel gas in a fuel cell system. A controller included in a fuel cell system performs a hydrogen leakage detecting process of detecting the occurrence of hydrogen leakage in the low-pressure zone based on the detected pressure in a low-pressure zone of an anode gas piping at a time of start-up of the fuel cell system. A controller uses at least one of a first condition and a second condition for determination as a determination condition in hydrogen leakage detecting process, and determines that there is no leakage of the reactive gas while the fuel cell stops generating power if the determination condition is satisfied.