Fuel cell system power-split control for component durability management

A system for operating a powertrain of a vehicle, wherein the powertrain includes a fuel cell and a traction battery, the system comprising:

• a controller communicatively coupled to a fuel cell controller module and a battery controller module;
• wherein the controller is configured to:
• obtain a power demand based at least in part on input from a user of the vehicle, a signal indicative of a state-of-charge of the traction battery, information about a characteristic of the traction battery, and information about a characteristic of the fuel cell,
• produce a fuel cell power signal that indicates a power to be output by the fuel cell and a battery power signal that indicates a power to be output by the traction battery, such that the power to be output by the fuel cell and the power to be output by the traction battery together add up to the power demand obtained by the controller,
• transmit the fuel cell power signal to the fuel cell controller module to cause the fuel cell to provide to the powertrain a corresponding fuel cell power, and
• transmit the battery power signal to the battery controller module to cause the traction battery to provide to the powertrain a corresponding battery power;
• wherein, to produce the fuel cell power signal, the controller is configured to determine a fuel cell life metric based at least in part on the characteristic of the fuel cell.