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.

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.

A supply device for the electrical supply of at least one consumer has a primary current system in which there is a fuel cell device, a secondary current system in which there is a battery which has an operating voltage range limited at the top by a maximum voltage and at the bottom by a minimum voltage and which has an operating current strength range for supplying current to the at least one consumer, and a frost-starting element, which is provided in the primary current system and is designed to bring about heating of the fuel cell device. An open-circuit voltage of the fuel cell device corresponds at most to the maximum voltage of the battery.

A fuel cell system includes a fuel cell stack, an oxidizing gas supply system, a cooling medium circulation pump, a stack temperature acquisition unit, and a control unit. After a first time point when a change in an acquisition temperature turns from downward to upward after the change in the acquisition temperature turns from upward to downward for the first time after the start of the warm-up operation processing, the control unit sets a decrease speed in cases of decreasing a rotational speed of the cooling medium circulation pump to a smaller value than a value set before the first time point.

The present disclosure relates to systems and methods for heating a fuel cell module.

An assembly for producing energy may include a fuel cell, a fluidic cell circuit configured to receive a first heat-transfer fluid and arranged at least partially around the fuel cell, a reversible thermodynamic system configured to alternatively: (i) evacuate the thermal energy produced by the fuel cell and transform it into mechanical energy through the first heat-transfer fluid, and (ii) input thermal energy to the fuel cell through the first heat-transfer fluid, wherein the thermodynamic system includes: (a) a fluidic thermodynamic circuit to receive a second heat-transfer fluid; (b) a first exchanger to exchange thermal energy between the fluidic thermodynamic circuit and the fluidic cell circuit; and (c) a second exchanger configured to exchange thermal energy between the fluidic thermodynamic circuit and an external source. The arrangement may improve fuel cell function, particularly for proton exchange membrane, usefully with fuel cell(s), particularly, proton exchange membrane fuel cells, preferably in transport.

A fuel cell system includes a fuel cell, a first temperature sensor configured to acquire a first temperature that is a temperature of the fuel cell, a plurality of accessories that is used to operate the fuel cell, a second temperature sensor configured to acquire a second temperature that is a temperature of at least any one of the plurality of accessories, and a controller configured to perform control on the plurality of accessories to execute a warming-up operation of the fuel cell. The controller is configured to execute the warming-up operation when any of a first condition that the first temperature is lower than a predetermined first threshold temperature and a second condition that the first temperature is equal to or higher than the first threshold temperature and the second temperature is lower than a predetermined second threshold temperature is satisfied.

The present disclosure relates to a fuel cell system and a method of controlling a heater thereof. A fuel cell system according to the present disclosure includes a cathode oxygen depletion (COD) heater that is disposed on a line through which cooling water flowing into a fuel cell stack circulates and heats the cooling water or consumes residual power of the fuel cell stack, and a controller that determines power consumption according to a target heating amount of the COD heater and controls an operation of the COD heater based on the determined power consumption.

A fuel cell system includes: a fuel cell; a target operating point determination unit that determines a warm-up target operating point based on a required electric power amount during warm-up and a required heat generation amount during warm-up; an operation control unit; and a failure state identification unit that identifies whether an electric power consumption device that operates by consuming generated electric power generated by the fuel cell has failed. When a failure of the electric power consumption device is identified, the target operating point determination unit determines an operating point that satisfies a required electric power amount during a failure that is set to be smaller than the required electric power amount during the warm-up and a required heat generation amount during the failure that is set to be smaller than the required heat generation amount during the warm-up as a target operating point during the failure.

Fuel cell unit (1) in the form of a fuel cell stack (1) for electrochemical generation of electrical energy, comprising fuel cells (2) having anodes, cathodes, proton-exchange membranes, gas diffusion layers and bipolar plates, the fuel cell unit (1) comprising at least one latent heat storage device (45) with a phase change material (46) to prevent water from freezing in the fuel cells (2) or delay such freezing