An integrated fuel cell, FC, module, for an electrical system in a heavy-duty vehicle is disclosed. The module includes a fuel cell stack, a compressor, a bleed valve, and an air-cooled brake resistor, where the bleed valve is configured to divide an air flow from the compressor into a first air flow and a second air flow, where the first air flow is fed to the fuel cell stack and the second air flow is fed to the air-cooled brake resistor, where the fuel cell stack, the compressor, the bleed valve, and the air-cooled brake resistor are enclosed in a common casing structure.

Disclosed are a system and method for controlling a cold start of a fuel cell. The system includes a fuel cell configured to be supplied with fuel gas and oxidizing gas so as to generate electric power, a main bus terminal configured to electrically connect an output terminal of the fuel cell to a high-voltage battery, accessories, or a driving device so as to output the electric power generated by the fuel cell, a main relay provided at the main bus terminal between the output terminal of the fuel cell and the high-voltage battery, the accessories, or the driving device and configured to electrically connect or cut off the main bus terminal, a COD resistor connected to the main bus terminal at an output terminal side of the fuel cell with reference to the main relay, and a controller configured to supply the electric power generated by the fuel cell to the COD resistor in the state in which the main relay is cut off, and to control the COD resistor to consume the electric power generated by the fuel cell and supplied thereto.

A controller closes a cutoff valve and a purge valve when a pressure value detected by a pressure sensor is an abnormal value. The controller then judges that an on-off valve has failed when the pressure value detected by the pressure sensor P1 has lowered, whereas the controller judges that the pressure sensor has failed when the pressure value detected by the pressure sensor has not lowered.

A battery system control device includes a load, a secondary battery connected to the load via a first power converter converting a voltage by a switching operation, a fuel cell, and a control unit. The battery discharges power supplied to the load. The fuel cell is connected to the load and to the battery and the first power converter, via a second power converter converting a voltage. The fuel cell generates low voltage power. The control unit charges the battery using the generated power from the fuel cell. The control unit includes fuel cell and secondary battery controllers. The fuel cell controller steps up the power generated by the fuel cell to a voltage chargeable by the battery to be supplied to the load by the second power converter. The secondary battery controller directly connects the load and the battery by stopping the switching operation of the first power converter.

A drive circuit comprising a DC bus configured to supply power to a load, a first fuel cell coupled to the DC bus and configured to provide a first power output to the DC bus, and a second fuel cell coupled to the DC bus and configured to provide a second power output to the DC bus supplemental to the first fuel cell. The drive circuit further includes an energy storage device coupled to the DC bus and configured to receive energy from the DC bus when a combined output of the first and second fuel cells is greater than a power demand from a load, and provide energy to the DC bus when the combined output of the first and second fuel cells is less than the power demand from the load.

The invention relates to a fuel cell stack having at least two segments of individual fuel cells arranged in parallel in terms of fluid, said segments being arranged in series relative to one another in terms of fluid. It is provided that the fuel cell stack is set up to vary the number of individual fuel cells in at least one segment.

A protection bar is arranged between a fuel cell casing and a DC-DC converter in the left-right direction of a fuel cell vehicle. Two fastening surfaces, each being a part of the fuel cell casing, and an FDC flange, which is a part of the DC-DC converter, are fastened and fixed to each other, with one being vertically superimposed on the other, in a space above or below the protection bar.

A fuel cell system including: a fuel cell; a voltage sensor that measures output voltage of the fuel cell; a converter that boosts the output voltage; and a control unit that controls the converter using a duty ratio including a feedforward term and a feedback term, the feedforward term being set to perform feedforward control, the feedback term being set to perform feedback control, wherein when the control unit causes the converter to boost the output voltage, and when the feedforward term calculated by specified Expression I exceeds an upper limit calculated by specified Expression II, the control unit causes the converter to boost the voltage output from the fuel cell with the duty ratio including the upper limit and the feedback term.

A metal support-type fuel cell that has a configuration in which a fuel cell element is supported by a metal support, and is capable of reasonably and effectively utilizing an internal reforming reaction even when an anode layer provided in the fuel cell element has a thickness of several tens of micron order is obtained. A fuel cell element is formed in a thin layer shape on a metal support, an internal reforming catalyst layer for producing hydrogen from a raw fuel gas by a steam reforming reaction is provided in a cell unit, and an internal reformed fuel supply path for discharging steam generated by a power generation reaction from an anode layer to lead the steam to the internal reforming catalyst layer, and leading the produced hydrogen to the anode layer is provided.

A control device for controlling a power supply device that supplies power to a work machine includes a load amount acquisition unit configured to acquire load information indicating a load amount of the work machine during a work period of the work machine, and an output condition determination unit configured to determine an output rate of a fuel cell based on the load amount indicated by the load information during the work period. The power supply device includes the fuel cell. The work period may be a period starting when information indicating start of work of the work machine is received and ending when information indicating end of the work of the work machine is received.