Fuel cell hydrogen path series integrated system

Abstract

A fuel cell hydrogen path series integrated system comprises an integrated seat body, a hydrogen circulating pump is installed at 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 pump gas inlet channel 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; and one side of the hydrogen pump gas exhaust channel is communicated with the booster cavity of the hydrogen circulating pump, the other side of the hydrogen pump gas exhaust channel is communicated with a low-pressure area of an ejector mounted on the integrated seat body, a high-pressure nozzle is arranged in the low-pressure area, a hydrogen source inlet connecting pipe is arranged at the front side of the high-pressure nozzle, an electromagnetic valve is arranged in the hydrogen source inlet connecting pipe, and an ejector guide pipe is arranged at the rear side of the high-pressure nozzle. The fuel cell hydrogen path series integrated 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 series integration 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 fast start-up capability. In order to improve the hydrogen utilization rate and avoid failures such as anode gas shortage and flooding, hydrogen circulation is generally used in fuel cell systems, and the way to achieve hydrogen circulation usually includes a hydrogen circulation pump and a hydrogen ejector. In comparison: the hydrogen circulation pump has high cost, low degree of localization, large volume, which is not conducive to compactness, has moving parts, low reliability, and will introduce parasitic power into the system and reduce system efficiency; hydrogen ejector can be used The front-end high-pressure hydrogen realizes the hydrogen injection cycle. As a ...

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Problems solved by technology

[0006] In order to make up for the deficiencies of the prior art, the present invention provides a fuel cell hydrogen circuit series integration 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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