System and method for improving gas flow control lag of fuel cell

A gas flow, fuel cell technology, applied in fuel cells, electrical components, circuits, etc., can solve problems such as unfavorable control, increase insulation volume, cylinder power consumption, etc., to improve accuracy and response speed, and reduce the impact of dead volume , reducing the effect of gas hunger
CN113285094APending Publication Date: 2021-08-20大连锐格新能源科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
大连锐格新能源科技有限公司
Publication Date
2021-08-20

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Abstract

The invention belongs to the field of fuel cell testing, discloses a system and a method for improving gas flow control lag of a fuel cell, and aims to solve the problem of transient data difference, namely flow lag, between a gas supply flow and an actual gas receiving flow of an electric pile in dynamic testing of the fuel cell. According to the invention, the accuracy and response speed of gas flow supply can be improved, and particularly for small-flow testing, the problem of buffer lag of process components of gas supply management is reduced so that the flexibility of a test design and the authenticity of test results are improved, hunger can be reduced, and the safety of the cell under test conditions is improved. According to the invention, deeper technical support is provided for dynamic operation and test research of the cell.
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Description

technical field

[0001] The invention belongs to the field of fuel cell testing, in particular to a system structure and an operating method for improving dynamic accuracy for the operation of hydrogen proton exchange membrane fuel cells, especially the gas supply for battery testing. Background technique

[0002] In the operation of proton exchange membrane fuel cells, especially in cell testing, the gas entering the stack is usually pre-humidified, and the gas flow is first metered by dry gas, then enters the humidification, and then enters the cell. Its humidification generally adopts bubbling, spraying, steam or membrane exchange, etc., and most of them are carried out at a continuous specified temperature, and the temperature change rate is lower than the flow rate or pressure change rate.

[0003] see figure 1 In actual work, it is found that, especially in small-scale tests, the process dead volume before the gas enters the battery has a more obvious buffer hysteresis...

Claims

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