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Fuel cell sealing gasket structure capable of improving sliding resistance

A technology for sealing gaskets and fuel cells, applied in fuel cells, circuits, electrical components, etc., can solve the problems of high overall cost, high cost of process equipment, and complex process.

Active Publication Date: 2019-04-12
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the injection molding process for assembling fuel cell sealing gaskets is relatively complex, and the cost of the process equipment used is higher. The sequence of the assembly process is very demanding, and the surface of the bipolar plate is required to be very clean and free from any dirt.
Therefore, the overall cost of assembling fuel cells by injection molding is very high

Method used

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  • Fuel cell sealing gasket structure capable of improving sliding resistance
  • Fuel cell sealing gasket structure capable of improving sliding resistance
  • Fuel cell sealing gasket structure capable of improving sliding resistance

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Embodiment Construction

[0029] The structure of a fuel cell sealing gasket with improved slip resistance of the present invention will be further specifically described below in conjunction with specific embodiments.

[0030] Such as figure 1 , Figure 5 , Image 6 As shown, the sealing gasket is composed of a gasket body 3 , several positioning columns 1 and a connecting body 2 , and the positioning columns and the gasket body 3 are connected through the connecting body 2 .

[0031] Such as image 3 , Figure 5 As shown, the positioning post 1 cooperates with several breakpoints 7 of the ridge 5 .

[0032] The fuel cell sealing gasket structure (refer to figure 1 ), the overall length of the sealing gasket body 3 is 400 mm, and the width is 100 mm; the cross-sectional size of the sealing gasket is 2 mm in width and 0.8 mm in thickness; the length of the connecting body 2 is 2 mm, 2 mm in width, and 0.4 mm in width; Column 1 has a thickness of 1.2 mm and a diameter of 2 mm. The characteristic ...

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Abstract

The invention relates to a fuel cell sealing gasket structure capable of improving sliding resistance. The fuel cell sealing gasket structure is composed of a connecting body and positioning columns.The thickness of the positioning columns is larger than that of the fuel cell sealing gasket, and the thickness of the connecting body is smaller than that of the fuel cell sealing gasket. In the stacking and pressing process of the fuel cell components, the positioning columns on the sealing gasket are firstly contacted with elements on two sides and then are compressed and deformed, so that thepositioning columns are fixed. In the subsequent pressing process, the sealing gasket suffers from sliding due to the processing error of each element, the error of the pressing device and the pressure of the fluid when the fuel cell works; the sliding of the fuel cell sealing gasket can drive the connecting body to move together, and the movement of the connecting body can be limited by the positioning columns which are connected with the connecting body and are pressed and fixed at the early pressing stage. Therefore, the fuel cell sealing gasket structure capable of improving sliding resistance can effectively limit the sliding of the sealing gasket, so that the reliability of sealing is improved.

Description

technical field [0001] The invention relates to the technical field of fuel cells, in particular to a fuel cell sealing gasket structure aimed at improving slip resistance. Background technique [0002] A proton exchange membrane fuel cell (PEMFC) relies on an electrochemical reaction to convert chemical energy stored in a fuel gas, such as hydrogen, directly into electricity. Proton exchange membrane fuel cell power generation has the characteristics of fast start-up at room temperature, high energy conversion efficiency, green and pollution-free exhaust gas, and safety. It can be used in fixed power stations, mobile power stations, aviation generators, marine generators, vehicle-mounted generators, and field emergency power supplies. , portable power supply, etc. At the end of 2014, Toyota officially released the passenger car Mirai using full-power proton exchange membrane fuel cells, officially opening the door to the commercial application of proton exchange membrane f...

Claims

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Application Information

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IPC IPC(8): H01M8/0276
CPCH01M8/0276Y02E60/50
Inventor 艾军郑利民侯明邵志刚
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI