Variable air inlet type fuel cell flow field and control method thereof

A fuel cell and control method technology, which is applied to fuel cells, circuits, electrical components, etc., can solve problems such as poor adaptability of fuel cells, and achieve the effects of good water management and mass transfer performance, simple structure, and good application prospects.

Pending Publication Date: 2022-05-17
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] As for the air intake method, all current flow fields have fixed air inlets and

Method used

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  • Variable air inlet type fuel cell flow field and control method thereof
  • Variable air inlet type fuel cell flow field and control method thereof
  • Variable air inlet type fuel cell flow field and control method thereof

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Embodiment Construction

[0017] The embodiments will be described in detail below in conjunction with the accompanying drawings.

[0018] Aiming at many problems existing in the existing fuel cell flow field structure, the present invention proposes a flow field structure based on Tesla valve design, figure 1 The structure of the Tesla valve flow field is shown.

[0019] Each multi-stage Tesla valve single flow channel 2 is composed of several single-stage Tesla valves, and multiple multi-stage Tesla valve single flow channels are arranged in parallel to form a fuel cell bipolar plate flow field. Reactant inlets / outlets 1-1 and 1-2 are arranged at both ends of the flow channel, respectively communicating with the single flow channel of each multi-stage Tesla valve. A single-stage Tesla valve structure such as figure 2 As shown, it includes a reverse air inlet 3 and a forward air inlet 4, and the single-stage Tesla valve is the basic unit of the flow field. exist figure 1 In the flow field structu...

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Abstract

The invention provides a variable air inlet mode fuel cell flow field based on a Tesla valve and a control method thereof, the flow field is composed of a plurality of multi-stage Tesla valve single flow channels in parallel, the plurality of multi-stage Tesla valve single flow channels are communicated with a reactant inlet/outlet, and each multi-stage Tesla valve single flow channel is composed of a plurality of single-stage Tesla valves. And the gas inlet direction of the flow field is controlled to adapt to various working conditions of the fuel cell. The flow field structure disclosed by the invention is relatively simple and easy to process and produce, and compared with a conventional flow field structure, the flow field structure disclosed by the invention can bring better water management and mass transfer performance when being applied to the fuel cell.

Description

technical field [0001] The invention belongs to the field of fuel cell management, and in particular relates to a variable intake type fuel cell flow field and a control method thereof. Background technique [0002] Fuel cells are one of the most promising technologies in the field of new energy applications today, which consist of bipolar plates and membrane electrodes. Reactive gases (usually hydrogen and air) are continuously transported to the membrane electrode through the flow channel on the bipolar plate to participate in the electrochemical reaction, so as to realize the output of current. The flow field structure and air intake mode on the bipolar plate have an important influence on this process. In order to ensure the long-term safe and efficient operation of fuel cells, reasonable and effective flow field structure and air intake design are essential. [0003] Currently, the most conventional flow fields in fuel cells include parallel flow fields, serpentine fl...

Claims

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Application Information

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IPC IPC(8): H01M8/0258H01M8/04746
CPCH01M8/0258H01M8/04746Y02E60/50
Inventor 龚繁王诚高帷韬张勋
Owner TSINGHUA UNIV
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