SYSTEM AND METHOD FOR CONTROLLING A FUEL CELL ENERGY SYSTEM OF A VEHICLE

A method of controlling an energy storage system in a vehicle, the energy storage system comprising a fuel cell energy conversion device and a junction box configured to connect the fuel cell energy conversion device to one of a bi-directional charging port and an electrical propulsion system. The method comprises determining a change in a vehicle operational status from a driving mode to a standstill mode; estimating a standstill duration; and based on a known relation between fuel cell degradation and fuel cell shut down duration for the fuel cell energy conversion device, determining if the fuel cell energy conversion device is to be active or shut down during the standstill.