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Simulation test method for fuel cell stack gas component backflow influence

A fuel cell stack, simulation test technology, applied in the direction of fuel cells, material separation, electrical components, etc., can solve the problems of lack of impact on stack operation and optimal control, etc., to shorten the development cycle, reduce operating costs, and reduce costs Effect

Active Publication Date: 2021-10-08
大连锐格新能源科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is still a lack of relevant technology to apply the change of the actual components after passing through the stack to the feedback management of the backflow intake of the stack, and there is a lack of technical solutions for analyzing the impact of the change on the operation of the stack and optimal control

Method used

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  • Simulation test method for fuel cell stack gas component backflow influence
  • Simulation test method for fuel cell stack gas component backflow influence

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Embodiment 1

[0029] A simulation test method for the influence of backflow of fuel cell stack gas components: the stack is operated under the condition of allocated fuel and oxidant supply, and the stack flow is calculated according to the backflow ratio by analyzing the flow and composition of the stack exhaust gas And composition, the flow and composition feedback is used to readjust the gas composition and flow at the gas source, including water vapor, to obtain the same experimental conditions as simulated by the reflux method.

[0030] The simulation test system used for this simulation test method: includes a working gas preparation and supply unit, an exhaust gas control unit, and a separation detection unit connected in sequence through pipelines. Between the preparation supply unit and the exhaust control unit.

[0031] The control management unit is the upper computer, which stores the scheduled operation program of the simulation test, modifies the operation program and processe...

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Abstract

The invention discloses a simulation test method for fuel cell stack gas component backflow influence, and relates to the field of hydrogen proton exchange membrane fuel cell testing. The method uses a simulation test system to carry out flow and component analysis on stack generated tail gas of a stack operation system with a tail gas backflow device, the flow and composition of the in-pile gas are calculated according to the reflux proportion, the flow and composition of the in-pile gas are used for readjusting the flow and composition of the gas at the gas source to simulate the flow and composition of the in-pile gas under the actual reflux condition, the pile is operated and detected, the data relationship between the related components and total amount and the performance of the pile are recorded according to the time, and real tail gas does not return to an electric pile inlet; and through simulation testing, stable experimental conditions close to a backflow mode are obtained, and adverse effects of coupling fluctuation and the like of complex working conditions caused by direct backflow of outlet gas and mixing of inlet gas on experimental data can be avoided, so that performance detection of the galvanic pile under the tail gas backflow condition is stably obtained.

Description

technical field [0001] The invention relates to the field of hydrogen proton exchange membrane fuel cell testing, in particular to a simulation test method for the effect of backflow of fuel cell stack gas components after cathode and anode working gases pass through the stack reaction. Background technique [0002] The performance test of fuel cells (PEMFC and SOFC, etc.) has many contents, including the operation analysis of two working gases as fuel and oxidant, the analysis of the composition and content of the gas source, the composition change under the operating conditions of the stack, and if There is exhaust gas returning to the stack, which affects the performance of the stack. [0003] Taking the anode fuel gas hydrogen of hydrogen proton exchange membrane fuel cells as an example, the fuel is generally high-content hydrogen or high-purity hydrogen. Under actual operating conditions, the anode tail gas is directly discharged from the stack or circulated back into ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04313H01M8/0438G01N30/02G01R31/378G01R31/385
CPCH01M8/04313H01M8/04402H01M8/0441G01N30/02G01R31/385G01R31/378Y02E60/50
Inventor 高鹏盛武林
Owner 大连锐格新能源科技有限公司
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