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1
US10236521B2
Publication/Patent Number: US10236521B2
Publication date: 2019-03-19
Application number: 14/937,863
Filing date: 2015-11-10
Abstract: A fuel cell system is provided that can operate continuously and appropriately when a water self-sustaining operation of the fuel cell system is difficult due to environmental conditions and operating conditions, etc. When a first water level corresponding to a water shortage in a condensed water tank is detected using a water level detector, a controller implements a water-saving mode where the output of a fuel cell is decreased regardless of the external power load and the amount of reforming water used is reduced. When it is determined using a cooling determination device during the water-saving mode that the exhaust gas cooling capability in a condenser brought about by a cooling medium is at least a prescribed value, the controller implements a water recovery mode where the output of the fuel cell is increased regardless of the external power load and the amount of condensed water recovered is increased. A fuel cell system is provided that can operate continuously and appropriately when a water self-sustaining operation of the fuel cell system is difficult due to environmental conditions and operating conditions, etc. When a first water level corresponding to a water shortage in ...more ...less
2
US2019198895A1
Publication/Patent Number: US2019198895A1
Publication date: 2019-06-27
Application number: 16/208,641
Filing date: 2018-12-04
Abstract: A fuel cell system includes: a fuel cell; an anode off-gas discharge path through which an anode off-gas exhausted from an anode of the fuel cell is discharged; a heating medium circulation path through which a heating medium that recovers heat generated in the fuel cell is circulated; a heat exchanger disposed in the heating medium circulation path; an electric power converter that converts the electric power output from the fuel cell; a case that houses the electric power converter; a first air feeder that supplies air to the case; a housing that houses the fuel cell, the case, and the first air feeder; and an air discharge path through which the air having passed through the case is discharged to outside of the housing. A downstream end of the anode off-gas discharge path is connected to the air discharge path. A fuel cell system includes: a fuel cell; an anode off-gas discharge path through which an anode off-gas exhausted from an anode of the fuel cell is discharged; a heating medium circulation path through which a heating medium that recovers heat generated in the fuel cell is ...more ...less
3
EP3503275A1
Publication/Patent Number: EP3503275A1
Publication date: 2019-06-26
Application number: 18210017.2
Filing date: 2018-12-04
Abstract: A fuel cell system includes: a fuel cell; an anode off-gas discharge path through which an anode off-gas exhausted from an anode of the fuel cell is discharged; a heating medium circulation path through which a heating medium that recovers heat generated in the fuel cell is circulated; a heat exchanger disposed in the heating medium circulation path; an electric power converter that converts the electric power output from the fuel cell; a case that houses the electric power converter; a first air feeder that supplies air to the case; a housing that houses the fuel cell, the case, and the first air feeder; and an air discharge path through which the air having passed through the case is discharged to outside of the housing. A downstream end of the anode off-gas discharge path is connected to the air discharge path. A fuel cell system includes: a fuel cell; an anode off-gas discharge path through which an anode off-gas exhausted from an anode of the fuel cell is discharged; a heating medium circulation path through which a heating medium that recovers heat generated in the fuel cell is ...more ...less
4
US2019173112A1
Publication/Patent Number: US2019173112A1
Publication date: 2019-06-06
Application number: 16/161,057
Filing date: 2018-10-16
Abstract: A fuel cell system includes a polymer electrolyte fuel cell that generates electric power using fuel gas and oxidant gas, a fuel gas supply path through which the fuel gas is supplied to an anode inlet of the fuel cell, a recycle gas path through which anode off-gas discharged from an anode outlet of the fuel cell returns to the fuel gas supply path, a pressure booster that is arranged in the fuel gas supply path between a confluence portion and the anode inlet, the fuel gas supply path and the recycle gas path meeting each other in the confluence portion, and a discharge path through which an impurity mixed into the anode off-gas is discharged outside. A fuel cell system includes a polymer electrolyte fuel cell that generates electric power using fuel gas and oxidant gas, a fuel gas supply path through which the fuel gas is supplied to an anode inlet of the fuel cell, a recycle gas path through which anode off-gas discharged ...more ...less
5
EP3493310A1
Publication/Patent Number: EP3493310A1
Publication date: 2019-06-05
Application number: 18202279.8
Filing date: 2018-10-24
Abstract: A fuel cell system includes a polymer electrolyte fuel cell that generates electric power using fuel gas and oxidant gas, a fuel gas supply path through which the fuel gas is supplied to an anode inlet of the fuel cell, a recycle gas path through which anode off-gas discharged from an anode outlet of the fuel cell returns to the fuel gas supply path, a pressure booster that is arranged in the fuel gas supply path between a confluence portion and the anode inlet, the fuel gas supply path and the recycle gas path meeting each other in the confluence portion, and a discharge path through which an impurity mixed into the anode off-gas is discharged outside. A fuel cell system includes a polymer electrolyte fuel cell that generates electric power using fuel gas and oxidant gas, a fuel gas supply path through which the fuel gas is supplied to an anode inlet of the fuel cell, a recycle gas path through which anode off-gas discharged ...more ...less
6
US10333153B2
Publication/Patent Number: US10333153B2
Publication date: 2019-06-25
Application number: 15/287,831
Filing date: 2016-10-07
Abstract: The fuel cell catalyst layer has: a catalyst including a carbon support having pores with a pore diameter of from 1 nm to 5 nm and a catalyst metal supported within the pores of the carbon support; and an ionomer having a glass transition temperature equal to or greater than 160° C. The fuel cell catalyst layer has: a catalyst including a carbon support having pores with a pore diameter of from 1 nm to 5 nm and a catalyst metal supported within the pores of the carbon support; and an ionomer having a glass transition temperature equal to or greater than ...more ...less
8
US10218012B2
Publication/Patent Number: US10218012B2
Publication date: 2019-02-26
Application number: 15/156,334
Filing date: 2016-05-17
Abstract: A solid oxide fuel cell system includes a solid oxide fuel cell that produces electricity by using a hydrogen-containing gas and an oxidant gas, an exhaust-gas path via which an exhaust gas discharged from the solid oxide fuel cell flows, a circulation path via which a coolant circulates, a first heat exchanger that is disposed on the exhaust-gas path and the circulation path and enables heat exchange between the exhaust gas and the coolant, a second path, via which condensed water produced when the exhaust gas is cooled in the first heat exchanger flows, that branches from the exhaust-gas path and is connected to the circulation path, a second tank that stores reservoir water, and a second heat exchanger that is disposed in the second tank and on the circulation path and enables heat exchange between the reservoir water and the coolant. A solid oxide fuel cell system includes a solid oxide fuel cell that produces electricity by using a hydrogen-containing gas and an oxidant gas, an exhaust-gas path via which an exhaust gas discharged from the solid oxide fuel cell flows, a circulation path via which a coolant ...more ...less
9
EP2653696B1
Publication/Patent Number: EP2653696B1
Publication date: 2019-08-28
Application number: 11848783.4
Filing date: 2011-12-13
10
EP3096385B1
Publication/Patent Number: EP3096385B1
Publication date: 2019-03-06
Application number: 16169345.2
Filing date: 2016-05-12
11
EP3179547B1
Publication/Patent Number: EP3179547B1
Publication date: 2018-09-26
Application number: 16201348.6
Filing date: 2016-11-30
Abstract: A hydrogen generation system (100) includes a reformer (10) that produces a hydrogen-containing gas from a raw material and reforming water, a combustor (11) that burns the hydrogen-containing gas and air, an exhaust-gas path (12), a cooling-water path (13), a condenser (14) that produces condensed water by exchanging heat between the exhaust gas and the cooling water, a water tank (21) that stores the cooling water, a water pump (19) that feeds the cooling water into the condenser (14), a reforming-water path (18) along which part of the cooling water is passed into the reformer (10) to serve as reforming water which is branched from the cooling-water path (13), and a controller (30). The water tank (21) is disposed at a position higher than the water pump (19). The water pump (19) is disposed at a position higher than the junction (40). The controller (30) detects an insufficient supply of the cooling water on the basis of the rotational speed of the water pump (19). A hydrogen generation system (100) includes a reformer (10) that produces a hydrogen-containing gas from a raw material and reforming water, a combustor (11) that burns the hydrogen-containing gas and air, an exhaust-gas path (12), a cooling-water path (13), a condenser (14) ...more ...less
12
US9979036B2
Publication/Patent Number: US9979036B2
Publication date: 2018-05-22
Application number: 14/583,149
Filing date: 2014-12-25
Abstract: A hydrogen generating apparatus includes a reformer generating hydrogen-containing gas through a reforming reaction, a raw material supplier supplying a raw material to the reformer, a reaction gas supplier supplying reaction gas other than the raw material to the reformer, a hydro-desulfurizer removing a sulfur compound in the raw material supplied to the reformer, a recycle flow passage through which part of the hydrogen-containing gas generated by the reformer is supplied to the hydro-desulfurizer, a closing device that closes the recycle flow passage, and a controller that, when stopping operation, closes the closing device and controls the raw material supplier and the reaction gas supplier such that the raw material and the reaction gas are supplied to the reformer, before a temperature of the reformer drops down to a temperature at which deposition of carbon from the raw material on a reformation catalyst disposed inside the reformer is suppressed. A hydrogen generating apparatus includes a reformer generating hydrogen-containing gas through a reforming reaction, a raw material supplier supplying a raw material to the reformer, a reaction gas supplier supplying reaction gas other than the raw material to the reformer, a ...more ...less
13
US2018159158A1
Publication/Patent Number: US2018159158A1
Publication date: 2018-06-07
Application number: 15/825,169
Filing date: 2017-11-29
Abstract: A fuel cell system includes a fuel cell that generates electric power using fuel gas and oxidant gas, a fuel gas supply path through which the fuel gas is supplied to an anode inlet of the fuel cell, a recycle gas path through which anode off-gas discharged from an anode outlet of the fuel cell returns to the fuel gas supply path, and a pressure booster arranged in the recycle gas path, and the pressure booster is arranged above a confluence portion where the fuel gas supply path and the recycle gas path meet each other when gravity acts downward from above. A fuel cell system includes a fuel cell that generates electric power using fuel gas and oxidant gas, a fuel gas supply path through which the fuel gas is supplied to an anode inlet of the fuel cell, a recycle gas path through which anode off-gas discharged from an anode outlet ...more ...less
14
EP3327846A1
Publication/Patent Number: EP3327846A1
Publication date: 2018-05-30
Application number: 17203428.2
Filing date: 2017-11-24
Abstract: A fuel cell system includes: a fuel cell that generates electricity by an electrochemical reaction of a fuel gas with an oxidant gas; a supply channel that supplies the fuel gas to an anode; a recycle channel that supplies an anode off-gas discharged from the anode, as the fuel gas, to the supply channel; a discharge channel that is connected to the recycle channel between the anode and the circulation pump, that is arranged in the recycle channel, and that discharges the anode off-gas to outside; a controller that brings a purge valve, that is provided on the discharge channel, into an open state and determines whether a purge operation to discharge the anode off-gas to the outside is abnormal, and performs an operation to decrease a flow rate of the fuel gas supplied to the anode when determining that the purge operation is abnormal. A fuel cell system includes: a fuel cell that generates electricity by an electrochemical reaction of a fuel gas with an oxidant gas; a supply channel that supplies the fuel gas to an anode; a recycle channel that supplies an anode off-gas discharged from the anode, as the fuel ...more ...less
15
EP3333952A1
Publication/Patent Number: EP3333952A1
Publication date: 2018-06-13
Application number: 17203994.3
Filing date: 2017-11-28
Abstract: A fuel cell system includes a fuel cell that generates power through electrochemical reaction between fuel gas and oxidant gas, a fuel gas supply path for supplying the fuel gas to an anode of the fuel cell, an offgas discharge path for discharging offgas from the anode of the fuel cell, a recycle gas path bifurcated from the offgas discharge path at a bifurcation and then joining the fuel gas supply path, a flow rate adjuster that is provided on the recycle gas path and adjusts a flow rate of gas flowing through the recycle gas path, a purge valve provided on the offgas discharge path downstream of the bifurcation, and a controller that controls the flow rate adjuster so that an internal pressure of the offgas discharge path upstream of the purge valve is positive. A fuel cell system includes a fuel cell that generates power through electrochemical reaction between fuel gas and oxidant gas, a fuel gas supply path for supplying the fuel gas to an anode of the fuel cell, an offgas discharge path for discharging offgas from the anode of the ...more ...less
16
EP3389125A1
Publication/Patent Number: EP3389125A1
Publication date: 2018-10-17
Application number: 18163045.0
Filing date: 2018-03-21
Abstract: A fuel cell system includes a fuel cell which generates electric power by using a hydrogen gas and an oxidizing gas, a hydrogen gas supply route where the hydrogen gas to be supplied to an anode of the fuel cell flows, an anode off-gas discharge route for discharging an anode off-gas discharged from the anode of the fuel cell to outside, an anode off-gas discharge valve provided to the anode off-gas discharge route, and a controller which causes the anode off-gas discharge valve to be opened when a temperature of any of the hydrogen gas supply route, the anode of the fuel cell, the anode off-gas discharge route, and the anode off-gas discharge valve becomes equal to or lower than a predetermined temperature. A fuel cell system includes a fuel cell which generates electric power by using a hydrogen gas and an oxidizing gas, a hydrogen gas supply route where the hydrogen gas to be supplied to an anode of the fuel cell flows, an anode off-gas discharge route for discharging an anode ...more ...less
17
US10026974B2
Publication/Patent Number: US10026974B2
Publication date: 2018-07-17
Application number: 14/002,979
Filing date: 2012-02-15
Abstract: A power generation system according to the present invention includes: a fuel cell unit including a fuel cell, a hydrogen generator having a first combustor, and a case; a controller; a combustion unit including a second combustor; and a discharge passage formed to cause the case and the combustion unit to communicate with each other. In a case where the controller causes one of the first combustor and the second combustor to perform the ignition operation, the controller maintains an operating state of the other combustor during the period of the ignition operation of the one combustor. A power generation system according to the present invention includes: a fuel cell unit including a fuel cell, a hydrogen generator having a first combustor, and a case; a controller; a combustion unit including a second combustor; and a discharge passage formed to cause the ...more ...less
18
EP3333950A1
Publication/Patent Number: EP3333950A1
Publication date: 2018-06-13
Application number: 17204037.0
Filing date: 2017-11-28
Abstract: A fuel cell system includes a fuel cell that generates electric power using fuel gas and oxidant gas, a fuel gas supply path through which the fuel gas is supplied to an anode inlet of the fuel cell, a recycle gas path through which anode off-gas discharged from an anode outlet of the fuel cell returns to the fuel gas supply path, and a pressure booster arranged in the recycle gas path, and the pressure booster is arranged above a confluence portion where the fuel gas supply path and the recycle gas path meet each other when gravity acts downward from above. A fuel cell system includes a fuel cell that generates electric power using fuel gas and oxidant gas, a fuel gas supply path through which the fuel gas is supplied to an anode inlet of the fuel cell, a recycle gas path through which anode off-gas discharged from an anode outlet ...more ...less