Fuel cell internal temperature-humidity-current density distribution measurement male tab

Abstract

A fuel cell internal temperature-humidity-current density distribution measurement male tab is a measurement device for internal temperature, humidity and current density distribution inside a fuel cell. Leaks and ribs corresponding to flow channels and ridges of a fuel cell flow field plate are arranged in a conductive substrate, and temperature-humidity-current density synchronous measurement sensors are arranged on the ribs; each temperature-humidity-current density synchronous measurement sensor made by a vacuum evaporation coating method comprises ninth layers of films. Leads made by the vacuum evaporation coating method are used for transmitting electrical signals, and are enlarged to form pins when extending to the edges of the flow field plate in order to facilitate connection with eternal data acquisition equipment. The fuel cell internal temperature-humidity-current density distribution measurement male tab realizes synchronous online measurement of internal temperature, humidity and current density distribution of the fuel cell, is independent from the fuel cell, does not require special modification on the structure of the fuel cell, and is adaptable to fuel cell flow field plates with parallel flow channels, S-shaped flow channels, staggered flow channels or channels of other shapes.

Description

technical field [0001] The invention relates to an internal temperature-humidity-current density distribution measuring insert of a fuel cell, belonging to the technical field of fuel cell detection. Background technique [0002] Fuel cells are affected by various factors such as temperature, humidity, gas flow, pressure, etc. By monitoring the distribution of temperature, humidity and current density inside the fuel cell, the mechanism of the influence of various factors on the performance of the fuel cell can be reflected, and the It provides a basis for optimizing the structure of the fuel cell and selecting the appropriate operating conditions of the fuel cell. [0003] The uniformity of the internal temperature field of the fuel cell is closely related to the smoothness of the internal heat transfer and the speed of the electrochemical reaction rate of the membrane electrode; the level of humidity not only affects the proton transfer capacity of the proton exchange memb...

AI Technical Summary

Problems solved by technology

Since there are many factors affecting the performance of fuel cells, multiple disassembly or structural changes will have a great impact on its performance, which also makes the comparison of before and after data lack accuracy

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