Fuel cell system with a combined fuel evaporation and cathode gas heater unit, and its method of operation A fuel cell system, in which the cathode gas heater and the evaporator are combined in a single compact first heat exchange unit which includes a first housing inside which thermal energy is transferred from the first coolant to both the cathode gas and the fuel.

A fuel cell vehicle is mounted with a fuel cell system including a fuel cell stack and a battery. The fuel cell vehicle controls operation of the fuel cell system with an ECU, to perform standby power generation from activation to when travel is allowed and to perform power generation during operation of the fuel cell vehicle after travel has been allowed. In an activation method, the power generation current is increased in accordance with a low-temperature efficiency rate during the power generation during operation, the battery is charged and the power generation current is increased in accordance with a standby current increase rate that is lower than the low-temperature efficiency rate during the standby power generation.

The invention relates to a fuel cell system (10) comprising at least one fuel cell stack (11) having an anode section (12) and a cathode section (13), an ejector (14), a fuel mixture line (15) for conveying a fuel mixture—containing primary fuel and secondary fuel—from the ejector (14) to the anode section (12), a primary fuel line (16) for supplying the primary fuel to the ejector (14), and a recirculation line (17) for returning the secondary fuel from the anode section (16) to the ejector (14), wherein at least sections of the primary fuel line (16) extend through a heat exchange volume (18) within the recirculation line (17) for a heat-transmitting connection between the secondary fuel and the primary fuel.

A fuel cell ship includes a cooling system that cools a fuel cell. The cooling system includes a cooling medium tank that accommodates a cooling medium, a cooling medium circulation pipe that circulates the cooling medium between the fuel cell and the cooling medium tank, a cooling tank internal gas detector installed in the cooling medium tank, a cooling tank internal gas discharge pipe connected to the cooling medium tank, and a cooling tank internal gas discharge valve installed in the cooling tank internal gas discharge pipe. The fuel cell ship includes a control unit that controls opening and closing of the cooling tank internal gas discharge valve. The control unit opens the cooling tank internal gas discharge valve when the cooling tank internal gas detector detects that the concentration of the fuel gas in the cooling medium tank is equal to or greater than a specified value determined in advance.

A fuel cell power generation module includes a lower frame configured to surround a lower portion of a power module complete (PMC) and to support and fix a side portion of the PMC so as to secure a space below the PMC, an upper frame coupled to an upper portion of the lower frame and configured to surround the PMC from above, and a plurality of side panels disposed to allow an electric module and a cooling module to be mounted on different side surfaces of the upper frame.

A fuel cell system wherein the fuel cell comprises an electrolyte membrane; wherein the electrolyte membrane is a perfluorosulfonic acid (PFSA) membrane; wherein the controller has a data group showing a correlation between the current of the fuel cell and the temperature of the fuel cell which is necessary to keep a moisture content of the electrolyte membrane at a predetermined moisture content threshold or more; and wherein, when the temperature and voltage of the fuel cell become a predetermined first temperature threshold or more and a predetermined voltage threshold or more, respectively, the controller conducts a temperature dropping time power generation mode in which power generation is conducted while controlling the current of the fuel cell with reference to the data group, until the temperature of the fuel cell becomes a predetermined second temperature threshold which is lower than the first temperature threshold.

A cold-hot component support structure, comprising a base and a connected support connected on the base by a bolt, wherein a bolt mounting hole is provided on the connected support, and an upper end face and a lower end face of the connected support are provided with an upper heat insulation block and a lower heat insulation block respectively. The lower heat insulation block is provided with a limit hole connecting the bolt mounting hole, and the upper heat insulation block is extended with a limit sleeve inserted in the limit hole. The supported support is clamped between the upper heat insulation block and the lower heat insulation block by an insertion structure between the upper heat insulation block and the lower heat insulation block, and an inner wall of a bolt hole on the connected support is insulated by the limit sleeve, so as to realize effective heat insulation of the connected support and reduce heat loss of the connected support. The structure can form part of a solid oxide fuel cell (SOFC) heat insulation support structure.

A cold-hot component support structure, comprising a base and a connected support connected on the base by a bolt, wherein a bolt mounting hole is provided on the connected support, and an upper end face and a lower end face of the connected support are provided with an upper heat insulation block and a lower heat insulation block respectively. The lower heat insulation block is provided with a limit hole connecting the bolt mounting hole, and the upper heat insulation block is extended with a limit sleeve inserted in the limit hole. The supported support is clamped between the upper heat insulation block and the lower heat insulation block by an insertion structure between the upper heat insulation block and the lower heat insulation block, and an inner wall of a bolt hole on the connected support is insulated by the limit sleeve, so as to realize effective heat insulation of the connected support and reduce heat loss of the connected support. The structure can form part of a solid oxide fuel cell (SOFC) heat insulation support structure.

The purpose of the present invention is to provide: fuel cell system that can further stabilize an operation of the system; and control method thereof. Fuel cell system comprises: fuel cell; a turbocharger; oxidizing gas supply line that supplies, to cathode, oxidizing gas compressed by a compressor; a heat exchanger that heats the oxidizing gas of the oxidizing gas supply line by means of exhaust gas discharged from a turbine, and flows the exhaust gas to combustion exhaust gas line; bypass lines each having one end connected to the upstream side of the heat exchanger in the oxidizing gas supply line and bypassing the oxidizing gas; flow rate regulating valves provided in the bypass lines; and a control unit that controls the flow rate regulating valves on the basis of the ambient air temperature, and controls the bypass flow rate of the oxidizing gas.

A temperature control apparatus and method for fuel cell system, where the apparatus includes a fuel cell stack, a first pump disposed on a first cooling line, a first radiator disposed on the first cooling line, power electronic parts, a second pump disposed on a second cooling line, a second radiator disposed on the second cooling line, a cooling fan configured to blow exterior air to any one of the first radiator and the second radiator, and a controller configured to determine an RPM of the cooling fan based on a coolant temperature at an inlet of the fuel cell stack and a first exterior air temperature, to determine a target cooling performance of the plurality of power electronic parts based on power consumptions of the plurality of power electronic parts, and to determine an RPM of the second pump based on the target cooling performance of the plurality of power electronic parts, the RPM of the cooling fan, and a second exterior air temperature.