A fuel cell vehicle includes a hydrogen injector, a controller, and a first power supply. The hydrogen injector is configured to open when supplied with a current large than or equal to a predetermined current threshold. The controller is configured to control a current that is supplied to the hydrogen injector such that the supply current follows a target current value. The first power supply is configured to supply electric power to the hydrogen injector and a prescribed auxiliary. The controller is configured to increase the target current value when the controller detects at least one of a first start signal for starting the prescribed auxiliary and a second start signal for informing startup of the prescribed auxiliary.

A fuel cell system includes a fuel cell, auxiliary devices, an auxiliary device controller, a secondary battery, a current sensor, a voltage sensor, and a diagnosis controller. In an output stop state where the fuel cell does not output electric power, the auxiliary device controller performs a residual water scavenging process of scavenging water remaining in the fuel cell to outside of the fuel cell system by driving the auxiliary devices using electric power supplied from the secondary battery and supplying the gas to the fuel cell. The diagnosis controller diagnoses the secondary battery using a current integrated value that is obtained by integrating amounts of current supplied from the secondary battery in a predetermined voltage range of a discharge voltage of the secondary battery that changes in response to discharge when electric power is supplied to the auxiliary devices by performing the residual water scavenging process.

Disclosed herein is a method of manufacturing a battery pack including a battery cell having an electrode assembly received in a battery case, made of a laminate sheet including a resin layer and a metal layer, together with an electrolytic solution.

The invention relates to a fuel cell assembly having a plurality of fuel cells amalgamated electrically and mechanically in a fuel cell stack, further including a residual gas treatment device for hydrogen-containing and oxygen-containing residual gases of the fuel cells, wherein the residual gas treatment device includes a recombination fuel cell with catalyst and membrane that is led via a power circuit separate from the fuel cells, and to a method for treating hydrogen-containing and oxygen-containing residual gases from fuel cells.

The invention relates to a method for operating a fuel cell arrangement which has a fuel cell for providing electrical energy in an electric circuit that has a circuit which is electrically connected to the fuel cell via a DC-DC converter, and a battery. It is provided that in at least one mode of operation of the fuel cell arrangement, following a start-up of the fuel cell, the battery is electrically disconnected from the circuit, and the DC-DC converter is operated in non-switched mode in order to supply at least one electrical consumer in the circuit with electric current provided by the fuel cell. The invention further relates to a fuel cell arrangement.

A fuel cell including at least one sealing gasket (10), said sealing gasket (10) comprising a main body (12) and a heater member (14) having a heater element (16) and a power supply portion (18), the heater element (16) being embedded in the main body (12) and the power supply portion (18) being accessible from outside the main body (12).

A fuel cell power controller tracks load current and fuel cell output voltage, and alerts on excessive fuel cell ramp rate, so another power source can supplement the fuel cell and/or the load can be reduced. A power engineering process makes efficient use of available fuel cell power by ramping up power flow rapidly when power is available, while respecting the ramp rate and other power limitations of the fuel cell and safety limitations of the load. Power flow decreases after an alert indicating an electrical output limitation of the fuel cell. Permitted power flow increases in response to a power demand increase (actual or requested) from the load in the absence of the alert. Power flow may increase or decrease in a fixed amount, a proportional amount, or per a sequence. A power controller relay may trip open on a low fuel cell output voltage or high load current.

The invention relates to a method for impressing an electrical alternating signal in an electrochemical energy supply device (1) by means of a control device (2), in which method a coupling capacitor (C.sub.k) is connected in series between the control device (2) and the energy supply device (1) during the duration of the signal impression operation comprising the following steps which are executed by the control device (2):

a) outputting an output signal (S.sub.out) corresponding to the alternating signal to be impressed, for impression into the energy supply device (1), wherein the output signal (S.sub.out) is determined based on at least one setpoint (S.sub.set), which is set by the control device (2), of the alternating signal to be impressed;

b) detecting an actual signal (S.sub.act) which corresponds to the output signal and which is applied to the energy supply device,

c) comparing the actual signal (S.sub.act) with the setpoint (S.sub.set) of the alternating signal to be impressed and

d) controlling the output signal (S.sub.out) in order to minimize the deviation between the actual signal (S.sub.act) and the setpoint (S.sub.set) of the alternating signal to be impressed.

The fuel cell system of a motor vehicle has a fuel cell, comprising an anode side and a cathode side, a compressor, which is rotationally connected to a motor and connected by a feed line to the cathode side of the fuel cell, and a turbine, which is connected by an exhaust air line to the cathode side and which furthermore is rotationally connected only to a generator, which is connected at the output side to a second inverter and a low-voltage battery.

A method for starting the normal operation of an electrical system with a fuel cell and a transducer from a stop mode is disclosed. The transducer absorbs the electrical power of the fuel cell, in which at least one reactant supply of the fuel cell was interrupted, where the interrupted reactant supply is resumed from a restart signal, and where a fuel cell voltage is prescribed and then regulated by the transducer. The prescribed fuel cell voltage is prescribed in a way that an electrical unloaded fuel cell supplied with reactants will exceed the prescribed fuel cell voltage in every case, and the current of the transducer necessary for maintaining the prescribed fuel cell voltage is measured, where the normal operation is released as of a prescribed current necessary to that effect.