To suppress the influence of gas on other fuel tanks when the gas is discharged from a fuel tank. A fuel storage device includes: a plurality of fuel tanks, each having a fusible plug valve; a support member that supports the plurality of fuel tanks, while making longitudinal directions of the respective fuel tanks parallel to each other; and a blocking member that blocks at least part of the fuel gas discharged from the fusible plug valves. The plurality of fuel tanks includes a tank group including the plurality of fuel tanks aligned along a first direction and a juxtaposed tank thereto. The blocking member is disposed between the tank group and the juxtaposed tank. The orientations of openings of the fusible plug valves included in blocked tanks are directed toward the blocking member, the blocked tanks being two or more fuel tanks that are continuous in the first direction, among the fuel tanks included in the tank group.

A method for supplying at least one fuel cell of a fuel cell system of the motor vehicle with fuel includes ascertaining or predicting an indication value which is indicative of the real and/or possible mass flow of the withdrawal of fuel from a pressure-vessel system of the motor vehicle and closing at least one tank shut-off valve when the indication value is equal to or falls below a limiting value.

A reactor unit includes reactors; and a cooler. The reactors are disposed in at least one line on a reactor cooling surface that is one of outer surfaces of the cooler. The cooler has a cooling medium flow passage that is in contact with an inner surface on a reverse side of the reactor cooling surface. The cooling medium flows linearly from an inlet portion to an outlet portion of the cooling medium flow passage. A direction in which the cooling medium flows inside the cooling medium flow passage is same as a direction in which the reactors are disposed in the at least one line. Cooling fins are provided on the inner surface on the reverse side of the reactor cooling surface. A longitudinal direction of each cooling fin is same as the direction in which the cooling medium flows inside the cooling medium flow passage.

A fuel cell vehicle includes a fuel cell stack, a fuel tank, a body-side mounting portion, a main fuel pipe, a securing mechanism, and an elastic pipe. The fuel cell stack is disposed in a front section of the fuel cell vehicle. The fuel tank is disposed in a rear section of the fuel cell vehicle. The main fuel pipe connects the fuel tank and the body-side mounting portion. The elastic pipe is connected to the fuel cell stack at a first end of the elastic pipe and connected, via the securing mechanism, to the body-side mounting portion at a second end of the elastic pipe opposite to the first end such that the second end of the elastic pipe is disengaged from the body-side mounting portion when a load larger than a predetermined threshold load is applied to the securing mechanism.

The invention relates to an emergency vehicle (1), especially fire truck, comprising: a vehicle body (2); at least two wheel pairs (3) having respectively at least two wheels (6), which are disposed on the vehicle body (2); an accumulator (10) for storage of electrical energy; a secondary energy unit (7) for conversion of an energy stored in a fuel into electrical energy; at least one electric motor (11).

The secondary energy unit (7) is disposed on a carrier frame (14), wherein the carrier frame (14) is received in modular and detachable manner on the vehicle body (2).

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.

The present invention relates to an electrically driven single-axle tractor for coupling with, and powering of, various pieces of equipment, comprising: a frame; a drive axle, connected to the tractor frame, provided with one pair of wheels; a primary electric motor coupled to the drive axle; at least a secondary electric motor coupled to an equipment drive shaft for releasable coupling with a piece of equipment; and, at least one electrical energy source, as power supply of the primary and secondary electric motor. The invention also provides an assembly of such a tractor and a piece of equipment as well as a method for driving such a tractor.

The invention relates to a fuel cell (2) comprising at least one membrane electrode assembly (10) and at least one flow field plate (40) comprising a separator plate (50). The flow field plate (40) has at least one structural part (51, 52) which comprises a base body (60) in which recesses (65) are introduced, and vanes (61, 62) which extend from sides (70, 72) of the recesses (65) and extend to the at the least one membrane electrode assembly (10).

The invention relates to a drive system (10), in particular for a vehicle, comprising a fuel cell unit (12) for generating electric energy, a secondary battery (14) for storing electric energy, an electric machine (20) with windings (21, 22, 23), and an inverter for actuating the electric machine (20). The inverter (30) is designed as a 3-level inverter and has multiple electronic switches (S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S12), diodes (D1, D2, D3, D4, D5, D6, X1, X2, X3, X4, X5, X6, X7, X8, X9, X10, X12), a plus pole (37), a minus pole (35), and a neutral pole (36). The fuel cell unit (12) and the secondary battery (14) are connected in series and are connected to the poles (35, 36, 37) of the inverter (30). The invention also relates to a method for heating a drive system (10) according to the invention, wherein the switches (S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S12) of the inverter (30) are actuated such that a short-circuit current path is produced between the inverter (30) poles (35, 36, 37) to which the fuel cell unit (12) is connected.

A fuel cell system includes: a converter that boosts a voltage input from a fuel cell; a voltage control device that can control a voltage input from an electricity storage unit; a drive circuit that converts direct-current electricity input from the converter and the voltage control device into alternating-current electricity and outputs the converted electricity to the load; a relay that switches between a connected state in which the fuel cell and the drive circuit are connected to each other and a disconnected state in which they are disconnected from each other; and a controller that determines whether the relay is welded by different determination methods using an index current value between the relay and the fuel cell and a first index voltage value between the relay and the converter when the fuel cell system is to be stopped.