A fuel cell system includes a fuel cell, an injection device configured to inject anode gas, an ejector mechanism through which the anode gas injected from the injection device flows, a circulation path configured to return the anode gas, discharged from the fuel cell, to the ejector mechanism, a supply path configured to supply the anode gas, discharged from the fuel cell together with the anode gas injected from the injection device from the ejector mechanism, to the fuel cell, and a controller.

The present disclosure relates to a gasket assembly that can be manufactured with improved productivity and can dramatically reduce maintenance costs, and a fuel cell humidifier including the same. A gasket assembly according to an embodiment of the present disclosure is provided for a fuel cell humidifier including a mid-case, a cap fastened to the mid-case, and at least one cartridge disposed in the mid-case and accommodating a plurality of hollow fiber membranes.

According to the present invention, electrolyte membrane electrode structures have a staggered arrangement wherein a part of an anode electrode faces a part of one of two adjacent cathode electrodes, with an electrolyte membrane being interposed therebetween, and another part of the anode electrode faces a part of the other cathode electrode, with an interconnect part being interposed therebetween, said interconnect part being formed in the electrolyte membrane. A fuel cell according to the present invention is additionally provided with a fuel gas supply layer that is provided with a fuel gas supply path in which a fuel gas to be supplied to the anode electrode flows. A wall part between fuel gas supply paths in the fuel gas supply layer is superposed on the interconnect part, with the anode electrode being interposed therebetween.

In a humidifier in which an inlet head and an outlet head are connected to one end and another end of a cylindrical housing of a humidifying module, a humidified-fluid inlet joint is connected to the inlet head via a first joint connection, and a fluid-to-be-humidified outlet joint is connected to the outlet head via a second joint connection, clearances that are capable of adjusting connecting positions in directions of the connecting surfaces are provided on the joint connections as well as on connections between the housing and the inlet head and the outlet head.

When a time point of occurrence of a stop state of a fuel cell system is predicted during traveling, a drying state control that causes a fuel cell stack to transition to a dry state is started a predetermined time (a required drying time) before the predicted time point of occurrence of the stop state.

An ECU of a fuel cell vehicle determines whether the vehicle travels on an uphill road or not. When determining that the vehicle travels on the uphill road, the ECU performs at least one of a temperature reduction control for reducing the temperature of a fuel cell stack and a humidification control for increasing the water content of the fuel cell stack, by the time the vehicle reaches the uphill road.

The air valve includes a supply valve configured to open and close an air supply passage through which the air gas to be supplied to the fuel cell stack from outside flows; a switching valve configured to switch between a state in which the air gas supplied from the outside flows through the air supply passage and a state in which the air gas supplied from the outside flows through a bypass passage that branches from the air supply passage; and a link mechanism connected to the supply valve and the switching valve and configured to actuate the supply valve and the switching valve. The link mechanism includes an arm portion fixed at the supply valve; and a cam plate fixed at the switching valve, wherein the cam plate includes a guide portion with which the arm portion is to contact.

A hydrogen generation electricity system for producing electricity from hydrogen using a hydrogen carrier substance, comprising: a reaction chamber arranged for generating a H2 gas stream by converting the hydrogen carrier substance; wherein the reaction chamber comprises an inlet arranged for receiving the hydrogen carrier substance; an output conduit for exiting the H2 gas stream; a fuel cell arranged for producing electric energy by converting hydrogen; the output conduit is arranged for supplying the H2 gas stream from the reaction chamber to the fuel cell; the system further comprising: a humidity determining unit arranged for determining a humidity level of the H2 gas stream; a water providing means for providing H2O to the reaction chamber; and a water vapour control means arranged for controlling the water vapour level in the reaction chamber, in response to the determined humidity level, wherein the generated H2 gas stream comprises hydrogen and water vapour.

A fuel cell system includes a fuel feeder that supplies fuel, a fuel cell stack that generates power through an electrochemical reaction using air and a hydrogen-containing gas generated from the fuel, a first temperature sensor that senses the temperature of the fuel cell stack, and a controller. The fuel cell stack has a membrane electrode assembly including an electrolyte membrane through which protons can pass, a cathode on one side of the electrolyte membrane, and an anode on the other side of the electrolyte membrane. The controller defines an upper limit of current output from the fuel cell stack on the basis of the temperature of the fuel cell stack, the supply of the fuel, and the hydrogen consumption of the fuel cell stack associated with internal leakage current and keeps the current output from the fuel cell stack at or below the upper limit.

A humidifier for a fuel cell is configured to humidify dry air to be supplied to a fuel cell stack with wet air discharged from the fuel cell stack. The humidifier includes a housing provided such that the dry air and the wet air pass therethrough, a moisture transfer member provided in the housing to transfer moisture in the wet air to the dry air, a bypass flow path provided to guide a part of the dry air to bypass the housing, and a flow regulating valve provided to be driven using a pressure difference between the inside and outside of the housing as a power source to adjust a flow rate of the dry air passing through the bypass flow path.