Fuel cell system without high pressure line of hydrogen supplying system and control method thereof

Patent metadata

Field	Value
Publication number	US-11894586-B2
Application number	US-202218074926-A
Country	US
Kind code	B2
Filing date	Dec 5, 2022
Priority date	Jan 16, 2017
Publication date	Feb 6, 2024
Grant date	Feb 6, 2024

Abstract

A fuel cell system without a high pressure line of a hydrogen supplying system, including a gas charging line formed between a gas charging station and a high pressure vessel charged with gas by the gas charging station, and a gas supplying line formed between the high pressure vessel and a stack, includes: a regulator provided in the gas supplying line; a solenoid valve provided in the gas supplying line between the regulator and the high pressure vessel; and a check valve provided in a bypass line connecting one point of the gas supplying line between the regulator and the solenoid valve and one point of the gas charging line.

First claim

What is claimed is:

1. A method of controlling a fuel cell system, the fuel cell system including a gas charging line formed between a gas charging station and a high pressure vessel charged with gas by the gas charging station, a gas supplying line formed between the high pressure vessel and a stack, a regulator provided in the gas supplying line, a solenoid valve provided in the gas supplying line between the regulator and the high pressure vessel, and a check valve provided in a bypass line connecting one point of the gas supplying line between the regulator and the solenoid valve and one point of the gas charging line, wherein gas passing through the check valve only flows from the gas supplying line to the gas charging line, wherein the method comprises:
step S 100 of determining whether an ignition of a vehicle in which the fuel cell system is mountable is in an “on” state;
step S 200 of determining whether the high pressure vessel of the fuel cell system is charged with gas by the gas charging station before the vehicle starts up;
step S 300 of measuring a pressure of the gas supplying line with a pressure sensor fastened to the gas supplying line between the regulator and the solenoid valve;
step S 400 of determining whether the check valve is opened according to the pressure of the gas supplying line; and
step S 500 of opening the solenoid valve when the check valve is opened in step S 400 and then, in sequence, closed.

2. The method of claim 1 , wherein when the pressure of the gas supplying line is larger than a predetermined pressure in step S 400 , the check valve is opened.

3. The method of claim 1 , further comprising:
step S 410 of measuring a time taken for the pressure of the gas supplying line to reach a predetermined pressure when the check valve is opened in step S 400 .

4. The method of claim 3 , wherein when the time taken for the pressure of the gas supplying line to reach the predetermined pressure is longer than a predetermined time in step S 410 , it is determined that the gas leaks from the gas supplying line.

Assignees

• Hyundai Motor Co Ltd
• Kia Motors Corp

Inventors

• Kim Chang Ho
• Shim Ji Hyun

Classifications

• H01M8/04201 Primary

  Reactant storage and supply, e.g. means for feeding, pipes · CPC title

• H01M8/04089

  of gaseous reactants · CPC title

• H01M8/04208

  Cartridges, cryogenic media or cryogenic reservoirs · CPC title

• H01M8/04388

  of anode reactants at the inlet or inside the fuel cell · CPC title

• H01M8/04671

  of the individual fuel cell · CPC title