A fuel cell-battery system includes: a battery module including a battery that stores electric power and a coolant line through which coolant circulates to cool the battery; a fuel cell module including a hydrogen tank that stores hydrogen, a fuel cell that produces the electric power using the hydrogen, and a hydrogen line that connects the hydrogen tank and the fuel cell to deliver the hydrogen from the hydrogen tank to the fuel cell; and a heat exchange module through which the coolant line and the hydrogen line pass such that the coolant is cooled by heat exchange with the hydrogen and the hydrogen is heated by heat exchange with the coolant.

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.

A redox flow battery system includes a battery cell that performs charge-discharge by supplying an electrolyte; a monitor cell to which the electrolyte is supplied; a voltmeter that measures an open circuit voltage of the monitor cell; a thermometer that measures a liquid temperature of the electrolyte; and a controller that controls the charge-discharge of the battery cell based on the open circuit voltage, and the controller corrects the open circuit voltage in accordance with the liquid temperature.

An energy conversion system includes an energy converter, a cold generator, and a liquid water obtainer. The energy converter is configured to convert energy of a source from one form to another form and generate heat and water vapor. The cold generator is configured to generate cold using the heat generated by the energy converter. The liquid water obtainer is configured to condense the water vapor using the cold to obtain liquid water. Accordingly, the water vapor generated from the energy converter can be cooled efficiently. Therefore, efficiency in obtaining the liquid water can be improved compared with a case where the water vapor is cooled by open air.

A vehicle includes a motor, a battery, a fuel cell stack, and a controller. The battery is configured to supply power to the motor to propel the vehicle. The fuel cell stack is configured to generate power to charge the battery. The controller is programmed to, while traversing a route with the fuel cell stack not operating and, responsive to data indicative of a predicted distance to empty at an end of the route being greater than a distance threshold, inhibit starting of the fuel cell stack during the traversing.

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 includes a fuel cell stack, a casing, an application part, and a facilitating mechanism. The facilitating mechanism has a space that is provided between the casing and an upper current collector. The upper current collector and the casing are connected at inclined surfaces.

A heat insulation structure for a high-temperature reaction room includes a heat insulating body surrounding the reaction room. The heat insulating body contains a binder component including a metal element and is arranged so as to face an insulating film disposed on a cell stack. Transfer of metal ions originating in the metal element from the heat insulating body toward the insulating film is suppressed by a metal ion transfer suppression means.

A heat treatment apparatus for a fuel cell membrane-electrode assembly is provided. The heat treatment apparatus includes a hot press installed on upper and lower sides of feeding path to move in the vertical direction on a frame and which presses the electrode catalyst layers on upper and lower surfaces of the membrane-electrode assembly sheet. A plurality of gripper modules are installed at set intervals in a base member along a feeding direction of the membrane-electrode assembly sheet, and selectively grip both side edges of the membrane-electrode assembly sheet. A driving unit reciprocally moves the base member in a direction perpendicular to the feeding direction of the membrane-electrode assembly sheet and in the feeding direction of the membrane-electrode assembly sheet.

A fuel cell may include a cell stack including a plurality of unit cells stacked in a first direction, first and second end plates disposed at corresponding first and second end portions of the cell stack, at least one clamping member coupled to the first and second end plates to clamp the plurality of unit cells in the first direction and configured to generate heat in a response to a control signal, and a controller configured to generate the control signal based on the temperature of the cell stack.