Fuel cell engine purging system and control method thereof

A fuel cell and engine technology, applied in fuel cells, electrochemical generators, circuits, etc., can solve problems such as inability to completely remove residual water content in cathode/anode membranes, reduce overall engine efficiency, and increase energy consumption of air compressors. Achieve the effect of improving the success rate of low-temperature start-up, low power, and reduced purge time

Active Publication Date: 2019-11-15
佛山市清极能源科技有限公司
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AI Technical Summary

Problems solved by technology

[0005] 1. Short-term air purging cannot completely remove the residual water content of cathode / anode and membrane;
[0006] 2. When the water content is reduced to a certain level, continuous air sweeping has little effect;
[0007] 3. Long-term air purging will greatly increase the energy consumption of the air compressor and reduce the overall efficiency of the engine

Method used

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  • Fuel cell engine purging system and control method thereof

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Embodiment Construction

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0026] It should be noted that the terms "include" and "have" and any variations thereof in the embodiments of the present invention and the drawings are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes unlisted steps or units, or optionally further includes For other steps or units inherent in thes...

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Abstract

The invention discloses a fuel cell engine purging system and a control method thereof. The fuel cell engine purging system is mainly composed of an air filter, an air compressor, an intercooler, a humidifier bypass valve, an anode purging shut-off valve, an electric pile air inlet shut-off valve, an electric pile air outlet shut-off valve, an air humidifier, a back pressure valve, a vacuum shut-off valve, a hydrogen tail exhaust valve, a hydrogen cycle pump, a three-way steering valve and a hydrogen inlet shut-off valve. The residual water can be fully removed in a short time with low energyconsumption.

Description

technical field [0001] The invention relates to the technical field of automatic control, in particular to a fuel cell engine purging system and a control method thereof. Background technique [0002] There are many factors that affect the low-temperature start-up performance of fuel cells, and one of the most important aspects is the initial water content of the stack at low-temperature cold start. [0003] In the prior art, after the fuel cell engine is shut down, the cathode / anode is usually purged with air to reduce the residual water content, thereby improving the success rate of low-temperature cold start. Specifically, in the prior art, the cathode / anode air of the stack is usually purged by an air compressor, and after a fixed time, it is considered that the residual water content has been removed and the purging ends. [0004] The inventor believes that the prior art has the following defects and deficiencies: [0005] 1. Short-term air purging cannot completely r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04828H01M8/04228H01M8/04303
CPCH01M8/04828H01M8/04228H01M8/04303Y02E60/50
Inventor 郭昂
Owner 佛山市清极能源科技有限公司
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