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Auxiliary start-stop device and start-stop method for activation test of hydrogen-oxygen fuel cell

A technology of fuel cells and fuel cell stacks, applied in fuel cells, electrochemical generators, circuits, etc., can solve problems such as damage to battery durability, waste of test gas, etc., to reduce usage, test costs, and damage. effect of risk

Active Publication Date: 2021-07-27
武汉氢能与燃料电池产业技术研究院有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, it is necessary to provide an auxiliary start-stop device for the hydrogen-oxygen fuel cell activation test to solve the technical problem of serious waste of test gas and damage to battery durability in the prior art when the stack activation test is started and stopped.

Method used

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  • Auxiliary start-stop device and start-stop method for activation test of hydrogen-oxygen fuel cell
  • Auxiliary start-stop device and start-stop method for activation test of hydrogen-oxygen fuel cell
  • Auxiliary start-stop device and start-stop method for activation test of hydrogen-oxygen fuel cell

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Embodiment 1

[0034] Such as figure 1 and figure 2 As shown, this embodiment provides an auxiliary start-stop device for hydrogen-oxygen fuel cell activation test, including two sets of auxiliary pipelines 1, each set of auxiliary pipelines 1 includes a main pipeline 11 and a branch pipeline 12 arranged in parallel, the main pipeline 11 comprises the main pipeline 113 that is provided with vacuum pump 111 and the first one-way valve 112 in series, branch pipeline 12 comprises the branch pipeline 121 that the second one-way valve 122 is installed, the first one-way valve 112 and the second one-way valve 122 The flow directions are the same, and the inlet ends of the two groups of auxiliary pipelines 1 in the flow direction are respectively used to connect to the cathode outlet and the anode outlet of the fuel cell stack 20 .

[0035] When auxiliary start and stop, close the two second one-way valves 122 on the two auxiliary pipelines 1, open the first one-way valve 112, and start the two v...

Embodiment 2

[0044] This embodiment provides a method for starting and stopping a hydrogen-oxygen fuel cell activation test, comprising the following steps:

[0045] S1. Connect the fuel cell stack and the auxiliary start-stop device as described in Embodiment 1 to the activation test circuit, and the inlet ends in the flow direction of the two sets of auxiliary pipelines are respectively used to connect to the cathode outlet of the fuel cell stack and anode outlet to ensure good airtightness;

[0046] S2. Open the first one-way valve and close the second one-way valve to replace the gas inside the fuel cell when it is opened;

[0047] S21. Purging the fuel cell stack with an inert gas;

[0048] S22. Evacuating the fuel cell stack through the main pipeline;

[0049] S23. Passing reaction gas into the fuel cell stack to break the vacuum of the fuel cell stack;

[0050] Among them, the internal gas displacement of the fuel cell when it is turned on includes:

[0051] S21. Use inert gas t...

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Abstract

The invention relates to an auxiliary start-stop device for an activation test of a hydrogen-oxygen fuel cell, which comprises two groups of auxiliary pipelines, each group of auxiliary pipelines comprises a main pipeline and a branch pipeline which are arranged in parallel, the main pipeline comprises a main pipeline which is provided with a vacuum pump and a first one-way valve in series, and the branch pipeline comprises a branch pipeline which is provided with a second one-way valve. The circulation direction of the first one-way valve is consistent with that of the second one-way valve, and the gas inlet ends of the two groups of auxiliary pipelines in the circulation direction are respectively connected to a cathode outlet and an anode outlet of a fuel cell stack. According to the invention, the time of a start stage and a stop stage can be greatly shortened; the test efficiency and the equipment utilization rate are improved; meanwhile, the usage amount of reaction gas is greatly reduced, and the test cost is reduced; and therefore, the damage risk of long-time residence of high potential to an electric pile electrode is reduced, and meanwhile, the invention further provides a starting and stopping method for the activation test of the hydrogen-oxygen fuel cell.

Description

technical field [0001] The invention relates to the technical field of proton exchange membrane fuel cells, in particular to an auxiliary start-stop device and start-stop method for hydrogen-oxygen fuel cell activation tests. Background technique [0002] Proton exchange membrane fuel cells have been widely used in transportation vehicles, buses, ships, underwater vehicles and spacecraft and other fields. Compared with other types of electric energy technologies, proton exchange membrane fuel cells have many advantages, including short start-up time, small system volume, low pollutant emissions, relatively high system efficiency and low noise level, etc., and are important potential new technologies in the 21st century. direction of energy development. [0003] With the large-scale application of proton exchange membrane fuel cells in the market, more and more fuel cell stacks are produced by manufacturers. Generally speaking, each newly assembled fuel cell stack needs to ...

Claims

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Application Information

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IPC IPC(8): H01M8/04223H01M8/04302H01M8/04303
CPCH01M8/04223H01M8/04302H01M8/04303Y02E60/50
Inventor 花仕洋吴昊叶东浩李柯张海波
Owner 武汉氢能与燃料电池产业技术研究院有限公司