Patent ID: 11894538
Assignee: HYUNDAI MOTOR COMPANY
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  B  Y | IPC B  H

Claim 0:
1. A fuel cell-battery system comprising:
a battery module including a battery configured to store electric power and a coolant line through which coolant circulates to cool the battery;
a fuel cell module including a hydrogen tank configured to store hydrogen, a fuel cell configured to produce the electric power using the hydrogen, and a hydrogen line configured to connect the hydrogen tank and the fuel cell to deliver the hydrogen from the hydrogen tank to the fuel cell; and
a heat exchange module through which the coolant line and the hydrogen line pass such that the coolant is cooled by heat exchange with the hydrogen and the hydrogen is heated by heat exchange with the coolant,
wherein the fuel cell module further includes
an external heat exchanger disposed on the hydrogen line between the heat exchange module and the hydrogen tank and configured to heat the hydrogen flowing in the hydrogen line, and
a return line configured to return the hydrogen passing through the external heat exchanger to an upstream side of the external heat exchanger with respect to a direction in which the hydrogen flows in the hydrogen line.