A method for operating an electric energy supply device with a plurality of usage units. Each usage unit is designed to generate or buffer electric energy. A control device is designed to control an exchange of energy between the energy supply device on the one hand and at least one device that is connected to the energy supply device on the other hand. For each usage unit it sets a respective setpoint value for at least one electric operating parameter.

A fuel cell system includes: a fuel cell unit; first and second supply systems; a switching device; a switching control unit, when required power of the fuel cell unit is equal to or smaller than a threshold; an open circuit voltage obtaining unit; and a supply system control unit.

A fuel cell system includes: a fuel cell unit; first and second supply systems; a switching device; a switching control unit, when required power of the fuel cell unit is equal to or smaller than a threshold; an open circuit voltage obtaining unit; and a supply system control unit.

A container holding mechanism is applied to a fuel cell vehicle including a driving mechanism capable of driving rear wheels and disposed on a side of the rear wheels. The container holding mechanism includes a first hydrogen gas, a second hydrogen gas, a third hydrogen gas container, and a moving unit. The first hydrogen gas container is disposed behind a rear drive shaft. The second hydrogen gas container is disposed in front of the rear drive shaft. The third hydrogen gas container disposed in parallel with the second hydrogen gas container in front of the rear drive shaft. The moving unit is configured to move the driving mechanism pushed out by the first hydrogen gas container in collision in such a manner that the driving mechanism avoids the second hydrogen gas container and the third hydrogen gas container.

A container holding mechanism is applied to a fuel cell vehicle including a driving mechanism capable of driving rear wheels and disposed on a side of the rear wheels. The container holding mechanism includes a first hydrogen gas, a second hydrogen gas, a third hydrogen gas container, and a moving unit. The first hydrogen gas container is disposed behind a rear drive shaft. The second hydrogen gas container is disposed in front of the rear drive shaft. The third hydrogen gas container disposed in parallel with the second hydrogen gas container in front of the rear drive shaft. The moving unit is configured to move the driving mechanism pushed out by the first hydrogen gas container in collision in such a manner that the driving mechanism avoids the second hydrogen gas container and the third hydrogen gas container.

A fuel cell system includes: a fuel cell including an inlet and an outlet; first and second injection devices injecting purge gas; a gas-liquid separator separating liquid water from the purge gas discharged from the outlet and causing the liquid water to flow out; a discharge valve discharging the liquid water flowing out to an outside; an ejector including: an inflow port and an outflow port for the purge gas; a first connection path between the outflow port and the inlet; an introduction path introducing the purge gas injected from the second injection device into the first connection path without flowing through the ejector; a second connection path between the gas-liquid separator and the outlet; a third connection path connected between the gas-liquid separator and the inflow port, and extending vertically upward from the gas-liquid separator; and a controller.

A fuel cell stack includes a cell stack body and a terminal plate and an insulator disposed at an end of the cell stack body in a stacking direction. The cell stack body includes a plurality of stacked power generation cells. Each of the power generation cells includes a membrane electrode assembly and a separator. The terminal plate is disposed between the cell stack body and the insulator. Elastic structure which elastically presses the terminal plate toward the cell stack body is provided between the insulator and the terminal plate.

A vehicle (1) comprises a passenger compartment (2) in which a front seat (32F), a rear seat (32R), and a floor (33) between the front seat (32F) and the rear seat (38R) are provided. A first group (S1) of batteries (3) is mounted under the front seat (32F), a second group (S2) of the batteries (3) is mounted under the floor (33), and a third group (S3) of the batteries (3) is mounted under a rear seat (32R). By setting a height (h2) of the second group (S2) of the batteries (3) to be lower than respective heights (h1, h3) of the first and third groups (S1, S3) of the batteries (3), a battery mounting capacity of the vehicle (1) can be increased without affecting the comfort of the passenger compartment (2).

A vehicle (1) comprises a passenger compartment (2) in which a front seat (32F), a rear seat (32R), and a floor (33) between the front seat (32F) and the rear seat (38R) are provided. A first group (S1) of batteries (3) is mounted under the front seat (32F), a second group (S2) of the batteries (3) is mounted under the floor (33), and a third group (S3) of the batteries (3) is mounted under a rear seat (32R). By setting a height (h2) of the second group (S2) of the batteries (3) to be lower than respective heights (h1, h3) of the first and third groups (S1, S3) of the batteries (3), a battery mounting capacity of the vehicle (1) can be increased without affecting the comfort of the passenger compartment (2).

A reaction cell for a flow battery having flow channels positioned within a recess of a non-porous and non-brittle housing that is also a dielectric. Positioning the flow channels within the recess eliminates the need for end plates, gaskets, and insulators of conventional designs. A current collector and an electrode within the recess have areas approximately equal to the area of the recess such that they fit within the recess and maximize the contact area between them.