Device and method for testing fuel cell stack leakage rate

A technology of fuel cell stack and fuel cell stack, which is applied in the direction of measuring the increase and decrease rate of fluid, using liquid/vacuum degree to measure liquid tightness, etc.

Active Publication Date: 2014-12-03
河南豫氢装备有限公司
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  • Abstract
  • Description
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Problems solved by technology

The patent does not deal with the measurement of leak rate

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  • Device and method for testing fuel cell stack leakage rate
  • Device and method for testing fuel cell stack leakage rate
  • Device and method for testing fuel cell stack leakage rate

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Embodiment

[0047] figure 1 It is a structural diagram of the leak rate testing device of the present invention. In order to automatically test the leakage rate caused by various internal and external leakages in the fuel cell stack, the device mainly includes 11 solenoid valves, 1 precision pressure sensor, 1 proportional pressure regulating valve, 1 safety valve, 1 constant container and corresponding pressure gauges, pipelines, etc.; the realization of all leak rate test functions is controlled by an industrial computer.

[0048] like figure 1 As shown, a fuel cell stack leakage rate test device is installed on the fuel cell stack. Air intake branch pipes, hydrogen gas intake branch pipes, and coolant inlet branch pipes are provided in front of the fuel cell stack. Air outlet pipes are provided behind the fuel cell stack. Branch pipe, hydrogen outlet branch pipe, coolant outlet branch pipe, characterized in that the device includes a helium cylinder 1 and an intake manifold, and the ...

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Abstract

The invention relates to a device and method for testing the fuel cell stack leakage rate. The device comprises a helium tank and an intake manifold and further comprises eleven electromagnetic valves, a precise pressure sensor, a proportional pressure regulating valve, a safety valve, a fixed container, a corresponding pressure meter and pipelines. Compared with the prior art, a gas pressure maintaining test can be conducted, the leakage rates can be automatically and accurately measured in the inner leakage and outer leakage processes of an electric stack, and safety interlocking and automatic discharging are achieved. The volumes of a hydrogen cavity, an air cavity and a cooling liquid cavity of any electric stack are calibrated respectively, and eight types of common gas leakage rates of total leakage of the air cavity, total leakage of the hydrogen cavity, outer leakage of the air cavity, outer leakage of the hydrogen cavity, outer leakage of the cooling liquid cavity, leakage between the hydrogen cavity and the air cavity, leakage between the hydrogen cavity and the cooling liquid cavity and leakage between the air cavity and the cooling liquid cavity can be automatically calculated.

Description

technical field [0001] The invention relates to a fuel cell, in particular to a method and device for testing the leakage rate of a fuel cell stack. Background technique [0002] Due to the increasingly prominent problems of energy shortage and environmental pollution, as an energy conversion device, the proton exchange membrane fuel cell (PEMFC) has become more and more popular due to its high energy conversion efficiency, clean and pollution-free, low operating temperature, and high power density. With the attention of governments, energy companies and automobile manufacturers, PEMFC-based mobile power supplies, power generation devices, various types of power stations and vehicle engines have been developed. [0003] PEMFC is an electrochemical power generation device that can convert chemical energy stored in fuel (hydrogen) into electrical energy efficiently and without pollution by reacting with oxygen. Its basic principle is as follows: hydrogen at a certain pressure...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M3/32
Inventor 邬敏忠吕忠斌
Owner 河南豫氢装备有限公司
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