Fuel cell leak detection device and leak detection method

Abstract

The invention provides a fuel cell leak detection device and a leak detection method. The stack is provided with at least two channels, one of which is filled with gas, and the other channels are filled with a leak detection medium; the endoscope includes a probe part , The display part, the probe part extends into the channel with the leak detection medium, through the display part, the position of the air bubbles on the inner wall of the channel can be observed, and the length of the probe part inserted into the channel can be used to determine the leaking single battery in the stack. The leak detection device of the present invention uses the endoscope in the leak detection of the fuel cell stack, quickly and accurately locates the leaking part of the stack through the endoscope, improves the leak detection efficiency of the fuel cell, and avoids the leakage of the stack during the layered test. , the battery needs to be dismantled many times and the performance of the stack is damaged, which has high practical application value.

Description

technical field [0001] The invention belongs to the technical field of fuel cell detection, and in particular relates to a fuel cell leak detection device and a leak detection method. Background technique [0002] During the stacking and operation of hydrogen fuel cell stacks, it is inevitable that the airtightness of the stack is not up to standard. Whether the airtightness is qualified or not affects the performance and safety of the stack. Therefore, the fuel cell stack The air tightness detection of the battery is an important issue that needs to be faced in the daily stack assembly. [0003] When detecting a battery pack with unqualified airtightness, especially when the battery pack has internal gas leakage, it is particularly important to accurately and quickly find a single battery with unqualified airtightness. The traditional method is through the sequential elimination method, such as dividing a stack into 10 groups, 10 pieces in each group, detecting the group w...

AI Technical Summary

Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is that the leak detection of the existing fuel cells is cumbersome, the detection efficiency is low, and the performance of the stack is affected.

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