Fuel cell hydrogen circulation system and control method thereof
A fuel cell and circulation system technology, which is applied to fuel cells, electrical components, circuits, etc., can solve the problems of NVH and high reliability risk of hydrogen circulation pump, poor economy of fuel cell system, etc., so as to reduce hydrogen circulation power consumption, The effect of increasing the ejection cycle and improving the efficiency
Pending Publication Date: 2022-07-29
SHANGHAI HYDROGEN PROPULSION TECH CO LTD
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Problems solved by technology
At present, the hydrogen circulation pump is generally used in series with the ejector to realize the recovery and utilization of hydrogen. The hydrogen circulation pump needs to do work and consume energy in all working conditions, and the fuel cell system is economical. At the same time, the NVH and reliability of the hydrogen circulation pump higher risk
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[0024] The invention discloses a fuel cell hydrogen circulation system, which reduces the hydrogen circulation power consumption in the full power section, improves the efficiency of the full power section of the system, and greatly prolongs the life of the hydrogen circulation pump.
[0025] The invention also discloses a control method of the hydrogen circulation system of the fuel cell.
[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0027] see figure 1 , The fuel cell hydrog...
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The invention discloses a fuel cell hydrogen circulation system, which comprises a hydrogen storage bottle and a galvanic pile, and is characterized in that the hydrogen storage bottle is communicated with a hydrogen inlet of the galvanic pile through a hydrogen inlet pipeline, and a hydrogen outlet of the galvanic pile is communicated with a hydrogen outlet pipeline; an ejector is arranged on the hydrogen inlet pipeline, and the hydrogen outlet pipeline is communicated with an ejection opening of the ejector through a hydrogen return passage; the hydrogen return passage comprises a first hydrogen return branch and a second hydrogen return branch which are arranged in parallel, a hydrogen circulating pump is arranged on the first hydrogen return branch, and a one-way valve is arranged on the second hydrogen return branch. According to the hydrogen circulation system of the fuel cell, the hydrogen circulation power consumption of a full power section is reduced, the efficiency of the system in the full power section is improved, and the service life of the hydrogen circulation pump is greatly prolonged. The invention further discloses a control method of the fuel cell hydrogen circulation system.
Description
technical field [0001] The invention relates to the technical field of fuel cells, in particular to a fuel cell hydrogen circulation system and a control method thereof. Background technique [0002] A fuel cell is a power generation device that directly converts the chemical energy of externally supplied fuels and oxidants into electrical energy, heat energy and water through electrochemical reactions. The fuel cell includes a hydrogen system and an air system. The hydrogen system decompresses the high-pressure gas provided by the hydrogen cylinder to provide the anode gas required for the stack reaction. In order to improve the utilization rate of hydrogen, it is necessary to re-pump the gas after the reaction is completed into the hydrogen inlet for the reaction. [0003] The pressure of hydrogen entering the stack decreases after passing through the stack. If the outgoing hydrogen is directly introduced to the inlet in front of the stack, since the pressure of the outgo...
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IPC IPC(8): H01M8/04089
CPCH01M8/04097H01M8/04104
Inventor 王克勇黄争蔡俊侯中军王鸿鹄朱益佳
Owner SHANGHAI HYDROGEN PROPULSION TECH CO LTD