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Performance recovery method for fuel cell stacks

A technology for fuel cell stacks and battery packs, which is applied in the direction of fuel cells, fuel cell additives, batteries, etc., and can solve problems such as increasing the recovery time of fuel cell performance and restoring the performance of fuel cell stacks

Active Publication Date: 2019-08-13
HYUNDAI MOTOR CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this approach requires increased fuel cell performance recovery time and may supply excess hydrogen to the cathode
For these reasons, it may be difficult to restore the performance of the fuel cell stack without disassembly from the fuel cell vehicle

Method used

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  • Performance recovery method for fuel cell stacks
  • Performance recovery method for fuel cell stacks
  • Performance recovery method for fuel cell stacks

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Embodiment Construction

[0034] It should be understood that the term "vehicle" or "vehicle" or other similar terms used herein includes general motor vehicles, for example, passenger cars including utility sports vehicles (SUVs), buses, trucks, various commercial vehicles, including various A variety of ships and marine vehicles, aircraft, etc., and include hybrid electric vehicles, electric vehicles, combustion, plug-in hybrid electric vehicles, hydrogen-powered vehicles, fuel cell vehicles and other alternative fuel vehicles (for example, derived from resources other than petroleum Fuel).

[0035] The terminology used herein is only for the purpose of describing specific embodiments and is not intended to limit the present invention. As used herein, the singular forms "a, an" and "the" are also intended to include the plural form unless the context clearly dictates it. It can also be understood that the term "comprises and / or comprising" used in the specification refers to the presence of the describ...

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Abstract

A method for recovering the performance of a fuel cell stack mounted within a vehicle is provided. A method includes a recovery process of continuously applying a predetermined load using a load device when an air supply is stopped and hydrogen is supplied to a fuel cell stack to output current from the fuel cell stack. Further, protons and electrons generated by hydrogen oxidation reaction at an anode are moved to a cathode, to produce hydrogen at the cathode and simultaneously remove oxide on the catalyst surface of the cathode.

Description

Technical field [0001] The present invention relates to a method for restoring the performance of a fuel cell stack. More specifically, the present invention relates to a method for directly restoring the deteriorated performance of a fuel cell stack installed in a vehicle without disassembling the fuel cell stack. Background technique [0002] Fuel cell stacks are used in fuel cell vehicles as the main power source and are composed of tens to hundreds of stacked unit cells. figure 2 An exemplary basic configuration of a membrane electrode assembly (MEA) in a unit cell of a fuel cell stack is schematically shown. As shown in this figure, the membrane electrode assembly is arranged on the innermost side of the unit cells of the fuel cell stack. [0003] The membrane electrode assembly includes a polymer electrolyte membrane 10 that conducts protons, and an anode 14 and a cathode 12 as electrodes stacked on both sides of the electrolyte membrane to react hydrogen as a fuel gas with ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/04H01M8/00
CPCH01M8/04H01M2220/20Y02E60/10Y02E60/50H01M8/04223
Inventor 秋炫硕全大槿申焕秀李盛根李在爀
Owner HYUNDAI MOTOR CO LTD
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