Batch detection tool and method for fuel cell bipolar plate leakage

Abstract

The invention relates to a batch detection tool and method for fuel cell bipolar plate leakage. The tool comprises an upper end plate (8), a lower end plate (12) and a pull rod (13), a plurality of bipolar plates (10) are stacked between the upper end plate (8) and the lower end plate (12) and are fixed through the pull rod (13), and the adjacent bipolar plates (10) and the bipolar plates (10), the upper end plate (8) and the lower end plate (12) are sealed through sealing pieces (11); the upper end plate (8) and the lower end plate (12) are provided with a fluorescent color developing agent solution inlet (5), a fluorescent color developing agent solution outlet (7), a hot air inlet (6) and a hot air outlet (9). Compared with the prior art, the tool provided by the invention has the advantages that a plurality of stacked polar plates are traced and permeated through a fluorescent agent for a certain period of time, so that the air tightness of the polar plates can be efficiently detected in batches, leakage points and semi-quantitative leakage conditions are accurately positioned, the detection beat is shortened, and the polar plate screening efficiency is greatly improved.

Description

technical field [0001] The invention relates to a fuel cell, in particular to a batch detection tool and method for leakage of bipolar plates of a fuel cell. Background technique [0002] With the maturity of fuel cell technology, as a zero-pollution, high-efficiency power generation device that can directly convert chemical energy into electrical energy, it has been more and more used in communication base stations, vehicle power, distributed power and other fields. [0003] The bipolar plate is one of the core components of the fuel cell, which plays the role of distributing gas, conducting heat and electricity. Due to the low voltage value of a fuel cell single cell under rated working conditions, more than one hundred or even hundreds of single cells are generally required to achieve high power output. Therefore, the requirements for the quality consistency control of bipolar plates are very high. [0004] In order to improve the power density of the fuel cell stack an...

AI Technical Summary

Problems solved by technology

[0006] 1. It is impossible to locate the leakage position on each plate;

[0007] 2. It is impossible to visually determine the severity of the leakage point on each plate

[0008] 3. Detection of the end of the bipolar plate after being assembled into a real stack. This method seriously occupies equipment resources and is very undesirable in terms of mass production.

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