Patent ID: 11916267
Assignee: L'AIR LIQUIDE, SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  F  Y | IPC F  H

Claim 0:
1. A method for supplying a fuel cell with hydrogen using an installation for supplying the fuel cell with hydrogen, the installation comprising:
the fuel cell,
a liquefied hydrogen storage tank; and
a supply circuit comprising at least one upstream end connected to the liquefied hydrogen storage tank and one downstream end connected to a fuel inlet of the fuel cell, the supply circuit comprising a set of control valves and a hydrogen heating system configured to heat hydrogen by heat exchange with a heat source, the liquefied hydrogen storage tank being configured to keep the liquefied hydrogen in equilibrium with a gaseous phase at a determined nominal storage pressure of between 1.5 and 4.5 bar,
wherein the hydrogen heating system comprises first heating heat exchanger,
wherein the supply circuit further comprises a liquid withdrawal pipe and a buffer tank for pressurized gaseous hydrogen that is configured to store the hydrogen withdrawn from the storage tank and heated by the hydrogen heating system, the set of control valves being configured to accumulate pressurized gas in the buffer tank at a determined storage pressure of between 4 and 100 bar, the liquid withdrawal pipe connecting a lower portion of the storage tank to the fuel inlet of the fuel cell, the liquid withdrawal pipe comprising, arranged in series, the first heating heat exchanger and a first pressure- and/or flow rate-regulating valve, said first pressure- and/or flow rate-regulating valve being configured to feed the fuel inlet of the fuel cell at a determined operating pressure of between 1 and 3 bar wherein the fuel cell is fed with hydrogen by the storage tank,
the method comprising a step of transferring hydrogen from the storage tank to the buffer tank.