High-reliability fuel cell pile stack package designing method

A technology of fuel cell stack and design method, applied in fuel cells, circuits, electrical components, etc., can solve problems such as large amount of calculation, long design cycle, poor flexibility, etc.

Active Publication Date: 2017-09-26
DALIAN UNIV OF TECH
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  • Abstract
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Problems solved by technology

[0004] The purpose of the present invention is to establish a high-reliability large-scale fuel cell stack design method, which fundamentally overcomes the shortcomings of the finite element method, such as large amount of calculation, poor flexibility, and long design cycle, and makes up for the current blank in the field of stack reliability design in China

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  • High-reliability fuel cell pile stack package designing method
  • High-reliability fuel cell pile stack package designing method
  • High-reliability fuel cell pile stack package designing method

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Embodiment Construction

[0048] Taking the design of the packaging reliability of a certain type of proton exchange membrane fuel cell product as an example, the specific implementation mode of the present invention is:

[0049] Design the core reaction area of ​​the proton exchange membrane fuel cell stack structure - the thickness difference between the membrane electrode MEA and the gasket gasket and the encapsulation force F on the bipolar plate.

[0050] 1) In combination with the material type of each component, the strength limit of each component is determined by using the component strength criterion proposed by the present invention.

[0051] 2) Using the formula (1-6) established by the present invention to determine the contact stress distribution form of each component.

[0052] 3) Use the formula (7-9) to determine the change law of the reliability of each component with the contact stress, and determine the allowable contact stress range of each component according to the reliability le...

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Abstract

The invention provides a high-reliability fuel cell pilestack package designing method and belongs to the technical field of fuel cell pilestack system packaging technologies. A mechanic theory and a reliability theory are utilized to simplify a cell pilestack to sequentially determine a change law of reliability of assemblies in the cell pilestack along with contact stress, further the optimal contact stress of all the assemblies can be determined, and the sizes and package force of the cell pilestack assemblies are designed to achieve the purpose of improving cell pilestack reliability. The high-reliability fuel cell pilestack package designing method disclosed by the invention is convenient, quick, flexible and changeable, can greatly reduce calculation consumption under the situation that package accuracy is guaranteed and shortens a cell pilestack package designing period.

Description

technical field [0001] The invention belongs to the technical field of packaging of fuel cell stack systems, and in particular relates to a high-reliability fuel cell stack packaging design method. Background technique [0002] Environmental pollution and energy crisis have forced governments and scientific research institutions of various countries to invest more and more in research and development of clean and efficient energy such as fuel cells. Fuel cells are recognized as one of the most promising new energy sources in the new century. In order to meet actual needs, multi-level single-layer fuel cells are packaged to form a stack for use. Since each level of single cell contains multiple components, the action of packaging force causes contact stress between components, and the existence of contact stress will affect the performance of components. Research data show that: excessive contact stress will lead to plastic deformation or even destruction of components; too...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/2404
CPCH01M8/2404Y02E60/50
Inventor 刘丽芳刘博吴承伟张伟马国军吕永涛
Owner DALIAN UNIV OF TECH
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