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System for measuring content of water in flow channel of proton exchange membrane fuel cell

A proton exchange membrane and fuel cell technology, applied in fuel cells, circuits, electrical components, etc., can solve the problems of complex operation and low detection accuracy, and achieve the effect of simple device and improved accuracy

Active Publication Date: 2021-12-03
XI AN JIAOTONG UNIV
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Problems solved by technology

[0004] The purpose of the present invention is to overcome the above-mentioned shortcoming of prior art, provide a kind of water content measuring system in flow channel of proton exchange membrane fuel cell, to solve the problem of low accuracy of water management and fault detection in prior art proton exchange membrane fuel cell, operation complicated question

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  • System for measuring content of water in flow channel of proton exchange membrane fuel cell
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  • System for measuring content of water in flow channel of proton exchange membrane fuel cell

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Embodiment Construction

[0028] The present invention will be further described in detail below with reference to the accompanying drawings:

[0029] In the description of the present invention, it is to be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "within", "outside", etc. The orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings, is meant to facilitate the description of the present invention and simplified description, rather than indicating or implying that the device or component must have a specific orientation. Construction and operation, it is not understood to be limited to the present invention; the term "first", "second", "third" is only used for description purposes, and cannot be understood as an indication or implies relative importance; in addition, unless otherwise Clear specified and limited, the term "installation", "connected", "connection" should be broadly understo...

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Abstract

The invention provides a system for measuring the content of water in a flow channel of a proton exchange membrane fuel cell. The system realizes real-time in-situ detection of the content of water in the flow channel through three sensors mounted on a bipolar plate. The water content of gas in a local flow channel can be monitored in real time through the temperature difference value of thermocouples at the two ends of a heating unit, the system has the advantages of being simple in simple and flexible in monitoring, whether water exists or not is determined according to whether a probe circuit extending into the flow channel is connected or not, and the measurement accuracy is improved. The system provides a method for detecting the water content by using three sensors independently or in a combined manner, and provides a water content optimization system based on a signal, so as to ensure that the battery continuously works under the optimal water content.

Description

Technical field [0001] The present invention belongs to the technical field of fuel cells, involving proton exchange membrane fuel cell water management and fault detection, especially a water content measurement system in a proton exchange membrane fuel cell. Background technique [0002] In the 21st century, with the development and utilization of hydrogen energy resources, some new energy technologies and devices were widely designed, including fuel cells, hydroxide engines, and the like. Among them, proton exchange membrane fuel cells are widely applied to portable power supplies, electric vehicles and thermoelectric joints due to their non-polluting and efficient energy utilization. The proton exchange membrane fuel cell (PEMFC) has the characteristics of light, low cost, small size, etc. while providing high energy densities. The central portion of the fuel cell system is a membrane electrode assembly (MEA), composed of a proton conductive film with an anode and a cathode c...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04492
CPCH01M8/04529H01M8/04492Y02E60/50
Inventor 苏进展张研王宝元
Owner XI AN JIAOTONG UNIV
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