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Fuel cell system and method for controlling therof

A fuel cell system, fuel cell stack technology, applied in fuel cells, power system fuel cells, circuits, etc., can solve problems such as increased fire or explosion, fuel cell stack durability deterioration, carbon corrosion, etc.

Active Publication Date: 2019-11-12
HYUNDAI MOTOR CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when air remains inside the system after the system stops operating, carbon corrosion due to oxygen in the air may occur
Therefore, the durability of the fuel cell stack may deteriorate
In addition, when an excess amount of hydrogen remains inside the system after the system stops operating, the concentration of hydrogen in the exhaust gas increases when the system is restarted, and thus may increase the risk of fire or explosion

Method used

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  • Fuel cell system and method for controlling therof
  • Fuel cell system and method for controlling therof
  • Fuel cell system and method for controlling therof

Examples

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Embodiment Construction

[0018] It will be understood that the term "vehicle" or "vehicular" or other similar terms as used herein generally includes motor vehicles, such as passenger cars including sport utility vehicles (SUVs), buses, trucks, various commercial vehicles; Vessels include boats, watercraft, aircraft, etc. of all kinds, and include hybrid vehicles, electric vehicles, plug-in hybrid electric vehicles, hydrogen powered vehicles, and other alternative fuel vehicles (eg, fuels from non-petroleum sources). As referred to herein, a hybrid vehicle is a vehicle that has two or more sources of power, such as both gasoline-powered and electric-powered vehicles.

[0019] Although the exemplary embodiments are described as using a plurality of units to perform the exemplary processes, it is understood that the exemplary processes may also be performed by one or more modules. Furthermore, it is understood that the term controller / control unit refers to a hardware device including a memory and a pro...

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PUM

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Abstract

A fuel cell system that has a fuel cell stack is provided. The system includes an electrolyte membrane, and a cathode and an anode that are a pair of electrodes disposed on opposite sides of the electrolyte membrane. A controller applies voltages to the cathode and the anode of the fuel cell stack before hydrogen that operates the fuel cell stack is supplied to the anode. When the voltages are applied to the cathode and the anode, hydrogen that resides in the cathode flows to the anode through the electrolyte membrane to decrease the concentration of the hydrogen in the cathode. The fuel cellsystem reduces the concentration of hydrogen discharged to the outside of the vehicle by reducing the concentration of hydrogen in the cathode before driving of the fuel cell is initiated.

Description

[0001] Cross References to Related Applications [0002] This application claims priority from Korean Patent Application No. 10-2018-0151927 filed on May 4, 2018, the entire contents of which are hereby incorporated by reference. technical field [0003] The present invention relates to a fuel cell system and a control method thereof, and more particularly, to a fuel cell system and a control method thereof for reducing the concentration of hydrogen discharged from a fuel cell in an initial operating state of the fuel cell. Background technique [0004] A fuel cell system employs a fuel cell stack having an air electrode, an electrolyte electrode, and a pair of electrodes. During operation of the fuel cell system, air is supplied to the cathode and hydrogen is supplied to the anode. However, when air remains inside the system after the system stops operating, carbon corrosion due to oxygen in the air may occur. Therefore, the durability of the fuel cell stack may be deteri...

Claims

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Application Information

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IPC IPC(8): H01M8/04791H01M8/04858H01M8/2457
CPCH01M8/04805H01M8/0488H01M8/2457H01M2250/20H01M8/04302Y02E60/50H01M8/0447
Inventor 张世权权赫律李贤宰
Owner HYUNDAI MOTOR CO LTD