Device and method for non-destructive detection of fuel cell current density distribution

Abstract

The invention discloses a fuel cell current density distribution non-destructive detection device and method, comprising three magnetic field acquisition units, the output ends of the three magnetic field acquisition units are all connected to one end of a data transmission module, and the other end of the data transmission module is connected to a computer The three magnetic field acquisition units are arranged on the same plane as the MEA of the fuel cell, and two of the magnetic field acquisition units are respectively arranged on both sides of the fuel cell; The gas end is set; the present invention sets magnetic field acquisition units on both sides and ends of the fuel cell respectively, uses the magnetic field acquisition unit to obtain the magnetic field strength at the location, and then uses the computer to calculate the current density distribution result of the fuel cell according to the obtained magnetic field strength The structure of the detection device is simple, no external power supply is required, and the fuel cell does not need to be modified; the accuracy of the current density distribution calculated by using the electromagnetic inversion algorithm is high.

Description

technical field [0001] The invention belongs to the technical field of fuel cells, and in particular relates to a device and method for non-destructive detection of fuel cell current density distribution. Background technique [0002] Proton exchange membrane fuel cell (PEMFC) is one of the most attractive energy conversion devices, mainly used in stationary and mobile applications, such as: stationary power generation, small portable applications, and power supply for automobiles; due to the interface on both sides of the proton exchange membrane The uniform distribution degree of the electrochemical reaction can affect the current density distribution in each area of ​​the fuel cell, and there is often an uneven phenomenon. [0003] At present, the methods for measuring the current density distribution of a proton exchange membrane fuel cell include the sub-cell method, the split flow channel method, and the indirect measurement of the current distribution by using an infr...

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Problems solved by technology

[0005] Aiming at the technical problems existing in the prior art, the present invention provides a fuel cell current density distribution non-destructive detection device and method to solve the difficulty in operation and use of the existing fuel cell current density distribution measurement process and the need to modify the fuel cell , the technical problem of poor adaptability of the measuring device

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