Patent ID: 11938840
Assignee: RENAULT S.A.S.
Field: Transport (Mechanical engineering)
Classification: CPC B  H  Y | IPC B  H

Claim 7:
8. A fuel cell system for a vehicle comprising:
a fuel cell;
a heater configured to warm up the fuel cell; and
a controller configured to execute an operation stop control of the fuel cell when an operation stop request of the fuel cell is received, wherein
the controller is further configured to:
determine, after the operation stop request is received, if a next operation start time of the vehicle has been set;
calculate a first energy cost and a second energy cost at predetermined intervals if the next operation start time of the vehicle has been set, wherein
the first energy cost is an energy cost required in a case where the fuel cell stops operation at a present time and a warm-up of the fuel cell using the heater is performed prior to the next operation start time of the vehicle, and
the second energy cost is an energy cost required in a case where the fuel cell continues to operate to maintain a temperature of the fuel cell at a warm-up temperature from the present time until the next operation start time of the vehicle; and

control the fuel cell to continue operation to maintain the temperature of the fuel cell at the warm-up temperature as long as the first energy cost is larger than the second energy cost.