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Hydrogen supply system for fuel cell

A fuel cell and hydrogen supply technology, applied in fuel cells, fuel cell additives, circuits, etc., can solve the problems of secondary return pipe providing negative pressure environment, unreasonable design of hydrogen supply system, and failure of ejector to work normally. , to achieve the effect of improving the utilization rate of hydrogen, improving the selectivity of hydrogen supply, and preventing the efflux of hydrogen.

Active Publication Date: 2019-09-17
SHANGHAI MICROPOWERS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the secondary return pipe of the ejector needs a certain negative pressure environment to achieve ejection, and the outlet of the hydrogen circulation pump is positive pressure, which cannot provide a negative pressure environment for the secondary return pipe of the ejector, resulting in the ejector being unable to Normal work, so the design of the hydrogen supply system is not reasonable

Method used

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  • Hydrogen supply system for fuel cell
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Embodiment Construction

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation manners of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention, and those skilled in the art can obtain other accompanying drawings based on these drawings and obtain other implementations.

[0031] In order to make the drawing concise, the parts related to the present invention are only schematically shown in each drawing, and they do not represent the actual structure of the product. In addition, to make the drawings concise and easy to understand, in some drawings, only one of the components having the same structure or function is schematically shown, or only one of them is marked. Herein, "a" not only means "only one", but also means "more than one".

[0032] In ...

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Abstract

The invention discloses a hydrogen supply system for a fuel cell. The system comprises a hydrogen supply subsystem and a circulation loop. The circulation loop comprises a first recovery pipeline and a second recovery pipeline, and the first recovery pipeline and the second recovery pipeline are connected in parallel to form a recovery pipeline. The circulation loop and an electric pile form a loop. The hydrogen supply subsystem is communicated with the recovery pipeline. When the hydrogen supply system is in a working state, the first recovery pipeline or the second recovery pipeline is in a working state. According to the invention, recycling of hydrogen is realized, the hydrogen utilization rate of the fuel cell is improved, and hydrogen leakage and explosion can be prevented. Only one of the first recovery pipeline and the second recovery pipeline works in a working state, and the other one can be used as a backup, so that the hydrogen supply selectivity of the fuel cell is improved, and the reliability is high.

Description

technical field [0001] The invention relates to the field of fuel cells, in particular to a fuel cell hydrogen supply system. Background technique [0002] Fuel cells are known as the fourth generation power generation technology after hydropower, thermal power and nuclear power. Due to its high energy efficiency, no moving parts, low vibration and noise, no pollution of emissions, simple and flexible assembly, etc., it has gradually been used in the fields of vehicle power, ship power, and backup power. [0003] The hydrogen supply subsystem is one of the important subsystems of the fuel cell, which mainly provides hydrogen with a certain temperature, pressure, flow rate and humidity for the fuel cell power generation system. In practical applications, in order to ensure the full reaction of hydrogen and prevent undergassing of fuel cells during power generation, hydrogen is generally oversupplied, with an excess coefficient of 1.1 to 1.5. At the same time, in order to im...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04089H01M8/0432H01M8/0438
CPCH01M8/04201H01M8/04097H01M8/0432H01M8/0438H01M8/04328H01M8/04388Y02E60/50
Inventor 杜忠选王林涛陆传荣李启玉唐志雄周耀东
Owner SHANGHAI MICROPOWERS
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