Patent ID: 11962049
Assignee: HYUNDAI MOTOR COMPANY
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 5:
6. The apparatus of claim 1,
wherein the second power converter further includes at least one unidirectional DC/DC converter module and a transformer, and
wherein the controller is configured to determine whether a current situation is a low temperature situation, when the fuel cell system is stopped,
wherein when the controller concludes that the current situation is the low temperature situation, the controller is configured:
to stop a boost operation of the single bidirectional DC/DC converter module and the at least one unidirectional DC/DC converter module,
to operate the second voltage battery in a discharge mode, and
to buck and supply electrical energy stored in the second voltage battery to the BOP using the single bidirectional DC/DC converter module,
wherein the low temperature situation is when an external temperature is less than a predefined threshold temperature.