Self-circulation fuel cell control system and method thereof

A fuel cell system and fuel cell technology, applied in the direction of fuel cells, fuel cell grouping, fuel cell additives, etc., can solve problems such as difficult continuous work, difficult control, high working pressure of fuel cells, etc., to achieve high oxidant concentration, high operating The effect of convenience and simple structure
CN101989665AActive Publication Date: 2011-03-23QINGDAO HANHE HYDROGEN ENERGY EQUIP TECH CO LTD
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
QINGDAO HANHE HYDROGEN ENERGY EQUIP TECH CO LTD
Publication Date
2011-03-23

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Abstract

The invention discloses a self-circulation fuel cell control system and a method thereof. A fuel cell electric pile charges and exhausts gas in a bidirectional way, one end of an oxidant passage is provided with a container used for holding an oxidant, the other end of the oxidant passage is divided into two paths which are respectively connected with two ends of the fuel cell electric pile through a first solenoid valve and a fourth solenoid valve, a bypass pipe provided with a third solenoid valve is connected between the first solenoid valve and the fuel cell electric pile, and a bypass pipe provided with a second solenoid valve is connected between the fourth solenoid valve and the fuel cell electric pile. By sequentially opening and closing the solenoid valves for the control of bidirectional gas charge and exhaust, the oxidant is not needed to be filtered, humidified or heated; and the invention has the advantages of low working pressure, good sealability, simple structure, convenient operation and low cost.
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Description

technical field

[0001] The invention belongs to the field of fuel cell systems, and in particular relates to a self-circulating fuel cell control system and a method thereof. Background technique

[0002] A fuel cell stack is generally composed of a plurality of battery cells, each of which includes two electrodes (bipolar plates) and a mold electrode assembly (MEA) separating the two electrodes, and is assembled in series with each other to form a fuel cell stack. The electrochemical reaction is achieved by supplying the appropriate reactants to each electrode, ie fuel to one electrode and oxidant to the other, creating a potential difference between the electrodes and thereby generating electrical energy.

[0003] In a typical fuel cell system using oxygen in the air as the oxidant, fuel and air enter the fuel cell through a set of channels respectively. Before the air enters the fuel cell, it needs to be treated as follows:

[0004] 1. Filter the air through a filter to...

Claims

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