Provided is a fuel cell system including a plurality of fuel cell stacks, in which with a simple configuration, air retention is unlikely to occur in cooling water and a flow rate of the cooling water to each fuel cell stack can be uniformized. In a fuel cell system including a plurality of fuel cell stacks provided with a coolant flow path through which a coolant flows, the plurality of fuel cell stacks are juxtaposed in a horizontal direction, and include a supply pipeline that distributes and supplies the coolant to the coolant flow path, and a discharge pipeline that collects and discharges the coolant that has flowed through the coolant flow path, and the supply pipeline and the discharge pipeline are provided within a formation range where the coolant flow path is formed in the plurality of fuel cell stacks, in a direction of gravity.

A cooling and gas dehumidifying system comprising a cooling circuit in which a thermal fluid is circulated. The system further comprises a cooling arrangement arranged in the cooling circuit and configured to cool the thermal fluid flowing therethrough. A consumer gives up heat energy to the thermal fluid flowing through the cooling circuit. A gas dehumidifier having a heat exchanger arrangement is configured to be thermally coupled in a gas dehumidifying operating state with the thermal fluid flowing through the cooling circuit downstream of the cooling arrangement and having a first temperature, and thereby give up heat energy to the thermal fluid, and to be thermally coupled in a de-icing operating state with the thermal fluid flowing through the cooling circuit downstream of the consumer and having a second temperature, and thereby absorb heat energy from the thermal fluid, the second temperature being higher than the first temperature.

A fuel cell arrangement which comprises a fuel cell having a first inlet for a fuel and a second inlet for an oxidizing agent, and comprises a vortex tube having an inlet, a first outlet for heated gas and a second outlet for cooled gas. Here, the first outlet of the vortex tube is fluidically connected to the first inlet or the second inlet of the fuel cell. A fuel cell system may have such a fuel cell arrangement, and a vehicle may have such a fuel cell arrangement or fuel cell system.

A fuel cell system includes a fuel cell stack, a plurality of injectors capable of adjusting a flow rate of anode gas supplied to the fuel cell stack, and an ECU causing the plurality of injectors to operate. The plurality of injectors include a main injector, and a BP injector that operates when power that exceeds a prescribed power generation amount is generated. The ECU performs an operational check of causing the BP injector to operate at least once and judging whether the BP injector is normal or abnormal, during a period from when the fuel cell system is activated to when the fuel cell system stops.

A membrane humidifier for a fuel cell is disclosed. The membrane includes a middle case in which a plurality of hollow fiber membranes are accommodated; a cap case coupled to the middle case; a potting part formed at the end portions of the plurality of hollow fiber membranes; and an assembling member disposed between the end portions of the cap case and the middle case, and simultaneously coupling, so as to be airtight, a gap between the cap case and the middle case and a gap between the cap case and the potting part.

A fuel cell system includes a fuel cell, a fuel gas supply channel, a regulator, an injector, and a controller. The controller drives the regulator in conjunction with the injector. The controller compares a fuel gas flow amount necessary for the fuel cell to generate electricity with a predetermined fuel gas flow amount, selects the fuel gas flow amount that is larger, and issues commands to the regulator and the injector. The predetermined fuel gas flow amount is set to be larger than the fuel gas flow amount necessary for the fuel cell to generate the electricity when a generated current or output of the fuel cell is smaller than a predetermined threshold value.

The purpose of the present invention is to provide fuel cell system capable of stably executing differential pressure control and having a simplified configuration, and method for controlling the same. Fuel cell system equipped with fuel cell, a turbocharger, exhaust fuel gas line, exhaust oxidizing gas line, combustion gas supply line for supplying combustion gas discharged from a combustor to a turbine, oxidizing gas supply line for supplying oxidizing gas compressed by a compressor to cathode, a regulator valve provided to the exhaust fuel gas line, and a control unit for controlling the differential pressure between the pressure of the cathode of the fuel cell and the pressure of the anode thereof by controlling the regulator valve, wherein the exhaust oxidizing gas line is not provided with venting system for discharging exhaust oxidizing gas outside the system.

A pump for a fuel cell includes a pump portion, a motor, a controller, a housing, and a temperature detector. The controller executes an activation control and a sensorless vector control. In the activation control, the controller executes a cold activation mode process when the outside air temperature is less than or equal to a set temperature. In the cold activation mode process, the controller executes at least one of increasing a value of an activation current supplied to the motor relative to when a normal activation mode process is executed or setting a supply duration of the activation current to the motor to be longer than that of when the normal activation mode process is executed.

A hydrogen supply system is configured to supply hydrogen to a fuel-cell vehicle by using a curdle for hydrogen transport, and includes: a filling unit provided at a hydrogen filling facility and configured to fill the curdle with hydrogen; a management unit configured to calculate a transport timing at which the hydrogen-filled curdle is transported to a business facility that operates the fuel-cell vehicle; a transport unit configured to transport the hydrogen-filled curdle to the business facility in accordance with the transport timing; and a disposition unit configured to dispose the hydrogen-filled curdle transported to the business facility at a place to which the fuel-cell vehicle is capable of accessing to have a refill of the hydrogen in the business facility.

A hydrogen supply system is configured to supply hydrogen to a fuel-cell vehicle by using a curdle for hydrogen transport, and includes: a filling unit provided at a hydrogen filling facility and configured to fill the curdle with hydrogen; a management unit configured to calculate a transport timing at which the hydrogen-filled curdle is transported to a business facility that operates the fuel-cell vehicle; a transport unit configured to transport the hydrogen-filled curdle to the business facility in accordance with the transport timing; and a disposition unit configured to dispose the hydrogen-filled curdle transported to the business facility at a place to which the fuel-cell vehicle is capable of accessing to have a refill of the hydrogen in the business facility.