Fuel cell hydrogen circulation system and control method
A fuel cell and circulation system technology, applied in fuel cells, power system fuel cells, electrical components, etc., can solve problems such as large pressure loss, and achieve strong water separation performance, high-efficiency water separation performance, and good separation performance.
Active Publication Date: 2020-10-16
XI AN JIAOTONG UNIV
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Problems solved by technology
Centrifugal separators have better separation efficiency at high and low flow rates, and can solve the problem of secondary entrainment of collision separation at high flow rates, but the pressure loss is relatively large
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[0038] Hereinafter, specific embodiments of the present application will be described in detail with reference to the accompanying drawings. According to these detailed descriptions, those skilled in the art can clearly understand the present application and can implement the present application. Without departing from the principle of the present application, the features in different embodiments can be combined to obtain new implementations, or some features in certain embodiments can be replaced to obtain other preferred implementations.
[0039] see Figure 1-11 , the present application provides a fuel cell hydrogen circulation system, the system includes a hydrogen supply assembly, an ejector 14, a fuel cell stack 15, a gas-water separation assembly and a controller 30 connected in sequence, the ejector 14 is connected to the The connection of the gas-water separation components;
[0040] The fuel cell stack 15 is connected to the gas-water separation assembly through a...
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The invention belongs to the technical field of fuel cells. The working condition range of an ejector and a gas-water separator in a hydrogen circulating system of a fuel cell is greatly changed, theejection rate provided by a conventional ejector is difficult to adapt to the requirements of an electric pile, and meanwhile, the gas-water separator with a single structure is difficult to adapt tothe gas-water separation requirements under different powers. The invention provides a fuel cell hydrogen circulation system, and the system comprises a hydrogen supply assembly, an ejector, a fuel cell stack, a gas-water separation assembly and a controller which are connected in sequence, wherein the ejector is connected with the gas-water separation assembly; the fuel cell stack is connected with the gas-water separation assembly through the reversing valve, and the gas-water separation assembly is connected with the ejector through the pressure regulating valve; the controller is used formonitoring the power change of the fuel cell stack, switching a hydrogen circulation route through a reversing valve, and controlling a reversing valve and a pressure regulating valve. An efficient and stable hydrogen circulation system is established, so the fuel cell stack can stably operate in a relatively wide power change range.
Description
technical field [0001] The present application belongs to the technical field of fuel cells, and in particular relates to a fuel cell hydrogen circulation system and a control method. Background technique [0002] Hydrogen fuel cells can directly convert the chemical energy of hydrogen into electrical energy without combustion. It has the advantages of high efficiency and power density, zero emissions, and silent operation. It is a very promising new energy power generation device. The hydrogen fuel cell chemically reacts the hydrogen on the anode side and the oxygen on the cathode side to generate electricity and water. In order to ensure the high-efficiency operation of the fuel cell, the amount of hydrogen supplied to the anode side is greater than the amount of hydrogen reacted, so it is necessary to establish an anode hydrogen circulation system To recycle the unconsumed hydrogen to improve the utilization rate of hydrogen. [0003] In the hydrogen circulation system o...
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Login to View More IPC IPC(8): H01M8/04089H01M8/04119
CPCH01M8/04097H01M8/04164H01M2250/20Y02E60/50
Inventor 冯健美韩济泉陈伟彭学院
Owner XI AN JIAOTONG UNIV