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Water flow field for water guide bipolar plate of static water drainage fuel cell

A fuel cell and water flow field technology, which is applied to fuel cells, circuits, electrical components, etc., can solve the problems of unreported water flow field structure and few research reports on water-conducting bipolar plates, and achieves high utilization rate and improved The effect of utilization and improving stability

Active Publication Date: 2019-03-22
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the fact that there are very few research reports on the water-conducting bipolar plates of fuel cells with static drainage function, the research on the structure of the water flow field has not been reported.

Method used

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  • Water flow field for water guide bipolar plate of static water drainage fuel cell
  • Water flow field for water guide bipolar plate of static water drainage fuel cell
  • Water flow field for water guide bipolar plate of static water drainage fuel cell

Examples

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Effect test

Embodiment 1

[0027] A bipolar plate flow field structure with independent water flow field was designed in the experiment. Such as figure 1 As shown, the present invention designs a structure diagram of a water-conducting bipolar plate and an independent water flow field. figure 2 The appearance diagram of the independent water flow field is given, the flow field is 5mm wide and 1.2mm thick, image 3 It is a partial enlarged view of the traditional flow field (without the concave structure), in which, 6 is the groove of the traditional flow field, and 5 is the ridge of the traditional flow field.

[0028] The pole plate uses a microporous carbon plate as the hydrogen pole plate, and a parallel concave structure 4 is processed on the surface of the ridge 5 near the water flow field side of the hydrogen pole plate, such as Figure 4 Partial enlargement is shown. The width of the concave structure 4 is 3 mm, and the depth is 3 / 4 of the thickness of the flow field, and then stainless steel...

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Abstract

The invention relates to a water flow field for a water guide bipolar plate of a static water drainage fuel cell. The water flow field is arranged in a bipolar plate water cavity; the water flow fieldhas a concave structure and a water guide assembly is placed into a concave part; the water guide assembly can be a continuous thread, rope or porous metal fiber with high hydrophilic performance andthe like, so that an actual water guide area of a water guide plate can be enlarged, and furthermore, the stability of the fuel cell is improved.

Description

technical field [0001] The invention relates to the technical field of proton exchange membrane fuel cell (PEMFC), and mainly relates to the flow field structure of the cooling water cavity of the bipolar plate of the fuel cell. Background technique [0002] The bipolar plate is the key component of the proton exchange membrane fuel cell stack. inner flow etc. Different types of proton exchange membrane fuel cell stacks adopt different drainage methods, and the bipolar plates used and their structures also have major differences, such as dynamic drainage methods and static drainage methods. [0003] When the fuel cell stack adopts the static drainage method, its bipolar plate is a new type of fuel cell structure, which replaces the traditional dense bipolar plate with a porous structure bipolar plate. The water-conducting bipolar plate has a microporous structure, and water can be filled in the pores for migration, and at the same time, it acts as a liquid seal gas below t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/0263H01M8/04119
CPCH01M8/0263H01M8/04149H01M8/04171Y02E60/50
Inventor 孙树成洪有陆朱海洋邵志刚
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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