Hydrogen gas supply system

A vehicle comprising a hydrogen gas supply system and a hydrogen consuming energy converter,

• wherein the hydrogen gas supply system is arranged to supply the hydrogen consuming energy converter with hydrogen,
• wherein the hydrogen gas supply system comprises a plurality of tanks for storage of pressurized hydrogen gas,
• wherein each of the plurality of tanks is provided with a valve configured to control the flow of hydrogen from the corresponding tank into a flow line connected to the hydrogen consuming energy converter,
• wherein the plurality of tanks comprises one or more primary tanks, each of which being provided with a corresponding primary hydrogen flow control valve, the plurality of tanks further comprising a secondary tank provided with a corresponding secondary hydrogen flow control valve,
• wherein the hydrogen gas supply system is arranged:
• so that the secondary tank contains a smaller maximum working amount of pressurized hydrogen than each of the one or more primary tanks, and/or
• so that the flow of hydrogen from the secondary tank is restricted so that a maximum mass flow rate of hydrogen flowing from the secondary tank into the flow line when only the secondary valve is open is smaller than the maximum mass flow rate of hydrogen flowing from each of the one or more primary tanks into the flow line when only the corresponding primary valve is open, and
• wherein the hydrogen gas supply system is configured to be set in at least:
• a first, normal operation mode wherein at least one primary valve is open, and
• a second, safety operation mode wherein the secondary valve is open and wherein all primary valves are closed,
• wherein the hydrogen gas supply system comprises a vehicle control unit arranged to control the hydrogen gas supply system, the vehicle control unit being configured to automatically switch operation mode from the first operation mode to the second operation mode when the vehicle is or is about to be located inside a building based on vehicle position data obtained from the vehicle control unit.