Fuel cell hydrogen path parallel integrated system

Abstract

A fuel cell hydrogen path parallel integrated system comprises an integrated seat body, a hydrogen circulating pump is installed on one side of the integrated seat body, a hydrogen pump gas inlet channel and a hydrogen pump gas exhaust channel are arranged in the integrated seat body, one side of the hydrogen pump gas inlet channel is communicated with a booster cavity of the hydrogen circulating pump, the other side of the hydrogen circulation path is communicated with a hydrogen circulation path inlet channel arranged in the integrated seat body, and a water segregator and a drain valve are arranged in the hydrogen circulation path inlet channel; the hydrogen circulation path inlet channel is further communicated with a low-pressure area of an ejector installed on the integrated base, a high-pressure nozzle is arranged in the low-pressure area, and an ejector guide pipe is arranged on the rear side of the high-pressure nozzle. The other side of the hydrogen pump exhaust channel is communicated with the high-pressure area of the ejector guide pipe through a communicating pipeline arranged in the integrated base, and a one-way valve is arranged in the communicating pipeline. The system is high in installation efficiency, small in size, small in occupied space, short in transmission distance, good in stability, high in rigidity, small in vibration, low in noise and capable of eliminating transmission loss and improving the supercharging efficiency, and the overall performance is improved.

Description

Technical field: [0001] The invention relates to a fuel cell hydrogen circuit parallel integrated system. Background technique: [0002] Proton exchange fuel cells are considered to be one of the most promising vehicle power sources due to their high power density, zero pollution, low operating temperature, and rapid start-up capability. In order to improve the utilization rate of hydrogen and avoid failures such as anode gas shortage and water flooding, hydrogen circulation is generally used in fuel cell systems. The way to realize hydrogen circulation usually includes hydrogen circulation pump and hydrogen ejector. In comparison: the cost of the hydrogen circulation pump is high, the degree of localization is low, the volume is large, it is not conducive to compactness, there are moving parts, the reliability is low, and it will introduce parasitic power to the system and reduce the system efficiency; the hydrogen ejector can be used The front-end high-pressure hydrogen r...

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Problems solved by technology

[0006] In order to make up for the shortcomings of the existing technology, the present invention provides a fuel cell hydrogen circuit parallel integrated system, which solves the problems of on-site assembly, complicated pipeline connection, troublesome operation and low installation efficiency in the past, and solves the problems of the previous split structure The problem of large volume and large space occupation solves the problems of long transmission distance, loss during transmission, and reduced boosting efficiency of the previous split structure, and solves the problems of poor stability, large vibration and loud noise of the previous split structure. question

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