Fuel cell stack manifold with ejector function

Abstract

A fuel cell stack manifold having an ejector function of which the manufacturing cost and the weight can be reduced by optimizing hydrogen supply and recirculation channels and removing other members. hardware without a separate ejector structure for additionally attaching an ejector, of which the productivity can be improved by removing from an ejector assembly process. The fuel cell system minimizes joints through which hydrogen may leak, by implementing a new structure of a manifold added with an ejector function by integrally forming / manufacturing a stack manifold having a venturi and diffuser structure and adding a nozzle thereto.

Description

technical field [0001] The present invention relates to a fuel cell stack manifold for supplying and distributing hydrogen, air and cooling water for operating the fuel cell stack, and more particularly to a fuel cell incorporating injectors for recirculating stack exhaust gases stack manifold. Background technique [0002] Typically, a fuel cell is a generator that converts the chemical energy of fuel into electricity through electrochemical reactions in a fuel cell stack, rather than through combustion into heat. Such fuel cells can be used not only to power industries, homes and vehicles, but also to power small electrical / electronic products, especially portable devices. [0003] An automotive fuel cell system generally includes a fuel cell stack that generates electric power, a fuel supply device that supplies fuel (for example, hydrogen) to the fuel cell stack, an air supply device that supplies hydrogen in air as an oxidant for an electrochemical reaction to the fuel...

AI Technical Summary

Problems solved by technology

[0014] However, these conventional recirculation systems suffer from increased size, weight, and complexity due to the channels and components required to mount the pump mechanism to the stack manifold

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