A porous medium water separator for fuel cells
A porous medium and fuel cell technology, applied in fuel cells, fuel cell control, fuel cell additives, etc., can solve problems such as solenoid valve failure, corrosion, and reduced system reliability
Active Publication Date: 2021-06-15
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology
However, this water separator uses a liquid level sensor and is equipped with a solenoid valve at the water outlet. The liquid level gauge and the water outlet solenoid valve are connected to the controller through a control line to realize automatic operation. Solenoid valve failure will occur, reducing the reliability of the system
However, this pipe-type air separator is made of metal, and there will be corrosion problems
Method used
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Embodiment 1
[0024] This embodiment is a water separator for the air outlet of the fuel cell. Including the container 2, the container 2 is provided with an air inlet 1, an air outlet 3 and a drain pipe 9; a porous medium plate 7 is arranged in the container 2 (the porous medium plate 7 uses a porous graphite plate, and its aperture is 12 μm , the contact angle is 63 °), the porous medium plate 7 is fixedly connected with the inner wall of the container 2 shell, and the container 2 is divided into an air cavity above the porous medium plate 7 and a water cavity positioned at the bottom of the porous medium plate 7; in the air cavity Among them, fins 4, flow splitter 5 and filter element 6 are arranged (the filter element uses a sponge).
[0025] When in use, the air inlet 1 of the water separator is connected with the air outlet 3 of the fuel cell, the air outlet 3 of the water separator is connected with the exhaust gas discharge pipeline, and its drain pipe 9 is connected with the liquid...
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Abstract
The invention belongs to the field of fuel cell water management, in particular to a porous medium water separator for fuel cells. The water separator of the present invention includes a shell, fins, flow dividers, filter cores, porous medium plates, drain pipes, sealing fasteners and the like. The gas-liquid mixture is separated from the gas-liquid through the air inlet through the flow divider, fins, filter elements, etc., the gas is discharged from the gas outlet, and the liquid enters the water chamber through the porous plate. Compared with the existing technology, its advantages are: it can realize the automatic drainage of the non-electric structure, avoid the possibility of failure of the electromagnetic structure after a long time of operation, and improve the automation of the system; its structure is simple, small in size, easy to install Convenient and easy to maintain.
Description
Technical field: [0001] The invention belongs to the field of fuel cell water management, in particular to a porous medium water separator for fuel cells. [0002] technical background: [0003] Proton exchange membrane fuel cells (PEMFCs) is a device that directly converts chemical energy into electrical energy. It has the advantages of high energy density, high energy efficiency, low pollution, and compatibility with renewable energy. The field has good development prospects. The water management of fuel cells plays an important role in the performance, stability and reliability of fuel cells, and has attracted much attention from academia and industry. [0004] When the proton exchange membrane fuel cell is working, because the proton exchange membrane needs to maintain a certain water content to improve its ion conductivity, the reaction gas usually needs to be humidified, and at the same time, liquid water is also generated at the cathode. Therefore, the gas outlet of ...
Claims
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IPC IPC(8): H01M8/04119H01M8/04291H01M8/04298
CPCH01M8/04119H01M8/04291H01M8/04298Y02E60/50
Inventor 邵志刚瞿丽娟王志强黄河何良
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI