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Novel fuel cell circular bipolar plate

A fuel cell and bipolar plate technology, applied in the direction of fuel cells, circuits, electrical components, etc., can solve the problems of difficult discharge of liquid flow, reduced diffusion mass transfer efficiency, etc., to improve diffusion mass transfer efficiency, increase pressure drop, reduce The effect of parasitic energy loss

Inactive Publication Date: 2019-11-08
SHANDONG JIANZHU UNIV
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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, single-serpentine and multi-snake-shaped flow channels, spiral flow channels, etc. Along the direction of the flow channel, the gas pressure drop gradually decreases, and the liquid flow is affected by resistance It is not easy to discharge, and the diffusion mass transfer efficiency is also reduced

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  • Novel fuel cell circular bipolar plate
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Embodiment Construction

[0018] 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.

[0019] Such as figure 1 A fuel cell circular bipolar plate is shown, an air inlet 1 is provided directly above the circular bipolar plate, an air outlet 5 is provided directly below the bipolar plate, and a first rib is provided in the middle of the bipolar plate The plate 2 separates the air inlet 1 and the air outlet 5 into a plurality of air inlets and outlets, and the left and right sides of the bipolar plate are respectively provided...

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Abstract

The invention discloses a novel fuel cell circular bipolar plate. The bipolar plate comprises air inlets, rib plates, annular runners and air outlets, wherein the plurality of air inlets are formed right above the bipolar plate, the plurality of air outlets are formed right below the bipolar plate, the first rib plate is arranged in the middle of the bipolar plate to divide a flow field plate intothe plurality of air inlets and air outlets, and annular runners and the second rib plates which are alternately arranged at intervals are arranged on the left side and the right side of the bipolarplate respectively. The structure not only can further improve the drainage performance of the runners, but also is beneficial to uniform distribution of reaction gas.

Description

technical field [0001] The invention relates to the field of fuel cells, in particular to a novel fuel cell circular bipolar plate. Background technique [0002] 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 a fuel cell, the flow path has to account for air supply and product water removal. An ideal flow channel structure is to enable the air to fully and evenly pass through the flow channel at an appropriate inlet flow rate, and then evenl...

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Application Information

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IPC IPC(8): H01M8/0258H01M8/0263
CPCH01M8/0258H01M8/0263Y02E60/50
Inventor 郑明刚朱万超廉钰弢
Owner SHANDONG JIANZHU UNIV
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