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Fuel cell variable cross-section flow passage and bipolar plate with fuel cell variable cross-section flow passage

A fuel cell and variable cross-section technology, which is applied to fuel cell components, fuel cells, circuits, etc., can solve the problems of increased processing costs, high processing difficulty, and difficult discharge of liquid flow, and achieves the reduction of flow velocity and diffusion speed. Effect

Inactive Publication Date: 2019-10-01
SHANDONG JIANZHU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Most of the existing technologies are equal-section flow channel structures, such as straight-through flow channels, serpentine flow channels, and spiral flow channels. Efficiency is also reduced
There are also some variable cross-section optimizations to improve the straight flow channel, but the processing is difficult and increases the processing cost

Method used

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  • Fuel cell variable cross-section flow passage and bipolar plate with fuel cell variable cross-section flow passage
  • Fuel cell variable cross-section flow passage and bipolar plate with fuel cell variable cross-section flow passage

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Embodiment Construction

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all of them. Based on the embodiments of the present application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present application.

[0022] Such as figure 1 In the fuel cell variable cross-section flow channel shown, the center of the circular carrier is provided with an air inlet 3, and a plurality of first ribs 1 are radially arranged on the carrier from the air inlet to the edge of the carrier. The first ribs The number is calculated and set according to the area of ​​the carrier. The first rib divides the carrier into multiple fan-shaped areas, and a plurality of i...

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Abstract

The invention discloses a fuel cell variable cross-section flow passage. A carrier is included, the center of the carrier is provided with an air inlet, the carrier is radially provided with a plurality of first ribbed plates from the air inlet to an edge of the carrier, the first ribbed plates divide the carrier into a plurality of regions, each of the regions is radially provided with a plurality of independent second ribbed plates, the number of the second ribbed plates is increased from the air inlet to the edge of the carrier, the cross-sectional areas of the first ribbed plates and the second ribbed plates are sequentially increased from the air inlet to the edge of the carrier, and fuel cell variable cross-section flow passages are between adjacent second ribbed plates or between the first ribbed plates and the second ribbed plates. The structure can further improve the uniformity of the gas supply of the flow passage, the diffusion mass transfer efficiency is improved, the liquid flow resistance is reduced, and the smooth discharge of liquid is facilitated.

Description

technical field [0001] The invention relates to the field of proton exchange membrane fuel cells, in particular to a fuel cell variable cross-section flow channel and a bipolar plate with the flow channel. Background technique [0002] Proton exchange membrane fuel cell is a power generation device that directly converts chemical energy stored in fuel and oxidant into electrical energy. Therefore, it has the characteristics of high energy conversion rate and environmental friendliness. It is recognized as the most ideal new energy technology in the world today. [0003] As one of the key components of the fuel cell, the bipolar plate plays an important role in gas distribution, electrical conduction, heat conduction, and drainage in the fuel cell. The performance of the bipolar plate mainly depends on the structure of the flow channel. In proton exchange membrane fuel cells, flow channels must consider air supply and discharge of product water. An ideal flow channel structu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/0258H01M8/0265H01M8/0202
CPCH01M8/0202H01M8/0258H01M8/0265Y02E60/50
Inventor 郑明刚朱万超廉钰弢
Owner SHANDONG JIANZHU UNIV
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