Snakelike flow field structure

A serpentine and flow field technology, which is applied in the field of fuel cells, can solve the problems that products cannot be discharged in time, heat cannot be dissipated in time, and battery performance is degraded.

Inactive Publication Date: 2021-06-18
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

[0006] When fuel cells work at high current densities, they usually face problems such as insufficient reaction gas, products that ca

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A serpentine flow field structure, the central area of ​​the flow field structure is provided with a plurality of serpentine ridges II2, the plurality of serpentine ridges II2 are arranged in parallel, and the serpentine ridge II2 is composed of a plurality of s-shaped units 5 at the head and tail Connecting structure, the linear distance L between the two ends of the s-shaped unit 5 is 2mm, the arc radius R of the s-shaped unit 5 is 2mm, the height H of the s-shaped unit 5 is 0.4mm and each The heights H of the s-shaped units 5 are all the same, and a serpentine gas flow channel 3 is formed between adjacent serpentine ridges II2;

[0028] The flow field structure is provided with a plurality of ridges I1, and the plurality of ridges I1 are arranged in parallel, and a gas inlet channel is formed between adjacent ridges I1, and the gas inlet channel communicates with the serpentine gas flow channel 3;

[0029] The flow field structure is provided with a plurality of ridg...

Embodiment 2

[0032] A serpentine flow field structure, the central area of ​​the flow field structure is provided with a plurality of serpentine ridges II2, the plurality of serpentine ridges II2 are arranged in parallel, and the serpentine ridge II2 is composed of a plurality of s-shaped units 5 at the head and tail connected, the linear distance L between the two ends of the s-shaped unit 5 is 2 mm, the arc radius R of the s-shaped unit 5 is 1.5 mm, the height H of the s-shaped unit 5 is 0.4 mm, and each The height H of each s-shaped unit 5 is the same, and a serpentine gas flow channel 3 is formed between adjacent said serpentine ridges II2;

[0033] The flow field structure is provided with a plurality of ridges I1, and the plurality of ridges I1 are arranged in parallel, and a gas inlet channel is formed between adjacent ridges I1, and the gas inlet channel communicates with the serpentine gas flow channel 3;

[0034] The flow field structure is provided with a plurality of ridges III...

Embodiment 3

[0037] A serpentine flow field structure, the central area of ​​the flow field structure is provided with a plurality of serpentine ridges II2, the plurality of serpentine ridges II2 are arranged in parallel, and the serpentine ridge II2 is composed of a plurality of s-shaped units 5 at the head and tail Connecting structure, the linear distance L between the two ends of the s-shaped unit 5 is 4mm, the arc radius R of the s-shaped unit 5 is 1.5mm, the height H of the s-shaped unit 5 is 0.4mm and each The height H of each s-shaped unit 5 is the same, and a serpentine gas flow channel 3 is formed between adjacent said serpentine ridges II2;

[0038] The flow field structure is provided with a plurality of ridges I1, and the plurality of ridges I1 are arranged in parallel, and a gas inlet channel is formed between adjacent ridges I1, and the gas inlet channel communicates with the serpentine gas flow channel 3;

[0039] The flow field structure is provided with a plurality of rid...

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Abstract

The invention relates to a snakelike flow field structure, and belongs to the field of fuel cells. A plurality of snakelike ridges II are arranged in the central area of the flow field structure, each snakelike ridge II is formed by connecting a plurality of s-shaped units end to end, and a snakelike gas flow channel is formed between every two adjacent snakelike ridges II. The snakelike flow field structure has the advantages of good mass transfer effect, high drainage capacity and the like, and the battery performance can be remarkably improved. Meanwhile, the snakelike flow field structure is easy to machine, complex die design is not needed, and the snakelike flow field structure can be achieved through traditional machining.

Description

technical field [0001] The invention relates to a serpentine flow field structure and belongs to the field of fuel cells. Background technique [0002] In recent years, due to the depletion of fossil resources and the increasingly prominent environmental problems, people's calls for new energy sources are getting louder and louder. Proton exchange membrane fuel cells have broad application prospects in transportation, aerospace, and portable power due to their characteristics of absolute cleanliness (the product is only water), high efficiency, mild working conditions, and good concealment. In 2019, the domestic fuel cell industry ushered in a small climax of development, and fuel cell companies blossomed everywhere. [0003] However, looking at the current domestic fuel cell market, there is still a lot of room for improvement in fuel cell technology itself, and the first thing that bears the brunt is battery performance. The improvement of fuel cell technology can genera...

Claims

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Application Information

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IPC IPC(8): H01M8/0263
CPCH01M8/0263Y02E60/50
Inventor 邵志刚侯明何良苟勇郑利民
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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