A fuel cell vehicle includes a travel prohibition control unit. In the case where a lid sensor detects an open state of a lid, the travel prohibition control unit performs travel prohibition control to prohibit travel of the fuel cell vehicle. In the case where the number of shift control operations has reached a release number within release time, the travel prohibition control unit releases the travel prohibition control, and in the case where the number of shift control operations has not reached the release number within the release time, the travel prohibition control unit continues the travel prohibition control. The release number is two or more.

A fuel cell vehicle is configured such that at least a part of an underfloor of a vehicle body is formed to have a shape causing a downforce to the vehicle body by wind passing below the underfloor, and an exhaust port via which exhaust gas from a cathode-side passage of a fuel cell is discharged is disposed in a negative pressure region where a negative pressure is caused by the shape causing the downforce. A magnitude of the negative pressure to be caused by the shape is detected or estimated, so that a driving amount of an air supply configured to supply air to the fuel cell is controlled according to the magnitude of the negative pressure thus detected or estimated.

A fuel cell system that ensures restraining a pressure relief mechanism from scattering is provided. The fuel cell system includes: a housing case that includes a stack housing portion housing a fuel cell stack and a high voltage component housing portion housing a high voltage component; a front side pressure relief mechanism, a left side pressure relief mechanism, a rear side pressure relief mechanism, a right side pressure relief mechanism, and an upper side pressure relief mechanism disposed on the high voltage component housing portion; and an auxiliary machine disposed outside the high voltage component housing portion. The respective pressure relief mechanisms are disposed in positions opposed to the auxiliary machine so as to have clearances with the auxiliary machine, and have rigidities lower than the rigidity of the auxiliary machine.

An extended-range fuel cell electric vehicle power device includes a driving motor, a bidirectional converter, a chopper, a power cell, a fuel cell, a high-pressure hydrogen storage tank, an electric control valve, a controller, an accelerator pedal and a brake pedal. An output of the driving motor is connected to a transmission shaft of an electric vehicle through a speed change gearbox, and an input of the driving motor is connected to an alternating current output end of the bidirectional converter; a direct current input end of the bidirectional converter is connected in parallel to an output of the power cell and an output of the chopper, and an input of the chopper is connected to a power source output of the fuel cell.

An electric vehicle which can travel using a power generator that generates electric power based on hydrogen without increasing the size of the hydrogen tank, is provided. An electric vehicle includes a first tank configured to store an organic hydride, a dehydrogenation reactor that has a first passage including a first catalyst for accelerating dehydrogenation reaction of the organic hydride supplied from the first tank and separates the organic hydride supplied to the first passage into hydrogen and an aromatic compound, a power generator configured to generate electric power using hydrogen supplied from the dehydrogenation reactor, a power storage configured to store electric power generated by the power generator, and a motor drivable on electric power from at least one of the power generator and the power storage to rotate a wheel.

The fuel cell vehicle includes a housing case having a stack housing portion that houses a fuel cell stack, and a high voltage component housing portion that houses a high voltage component, is disposed above the stack housing portion, and allows gas to be circulated to and from the stack housing portion; and pressure relief mechanisms provided on the front, rear, left, and right side walls respectively. A front side pressure relief mechanism is disposed in a position facing a radiator support, a left side pressure relief mechanism is disposed in a position facing an apron member and suspension tower on the left side, a rear side pressure relief mechanism is disposed in a position facing a dash panel and cowl member, and a right side pressure relief mechanism is disposed in a position facing an apron member and suspension tower on the right side.

A frame arrangement for a vehicle may include a first side member and a second side member that each have an upper portion and a lower portion. The upper portions are spaced laterally apart by a first distance, and the lower portions are spaced laterally apart by a second distance less than the first distance. The frame arrangement may further include a first battery positioned between the lower portions of the side members, and a second battery positioned between the upper portions of the side members.

A fuel cell vehicle may include: an electric traction motor; an inverter; a fuel cell system; a first boost converter including first low voltage terminals connected to a fuel cell and first high voltage terminals connected to the inverter, the first boost converter including a first capacitor connected between positive and negative terminals of the first high voltage terminals; a first relay connected between the first boost converter and the inverter; and a controller, wherein the controller is configured to: shut down the fuel cell system; while a voltage of the fuel cell is higher than a voltage threshold, discharge the first capacitor and maintain a voltage thereof higher than the voltage of the fuel cell; and when the voltage of the fuel cell becomes lower than the voltage threshold, stop discharging the first capacitor and disconnect the first boost converter from the inverter by opening the first relay.

A control method for a fuel cell system is provided to prevent freezing in an air exhaust system of the fuel cell system. The method prevents freezing in the exhaust system by specifying a vehicle condition in which possibility of freezing is high and operating the fuel cell system based on different vehicle-specific standards. The performs air supercharging control based on an ambient temperature and a temperature of cooling water, air supercharging control by applying weights based on inclinations of a vehicle, and a forced heating logic using a COD heater.

The disclosure provides a stack frame that is arranged in a front portion of a vehicle and on which a battery stack is mounted. The stack frame includes a body section and a crash box. The body section includes plural members that are welded to each other along a weld line. The weld line between the plural members extends in a front-back direction of the vehicle. The crash box is arranged on a front side of the body section. A lateral wall surface of the crash box is displaced from an extended line of the weld line.