Fuel battery bipolar plate

Abstract

There are multiple parallel-extended grooves on the bipolar plate. The wall surfaces of each groove define one sectional area possessing the opening. The fittings utilized to reduce the said sectional area are set up at near the openings in order to increase the pressure difference between entries and exits of the gas passages so as to prevent the jam-up of the gas passages in the bipolar plate from water drops. Thus, the high efficiency operation of the fuel battery can be maintained.

Description

technical field [0001] The present invention relates to a bipolar plate of a fuel cell, in particular to a bipolar plate with improved water management effect, especially a bipolar plate applied in a proton exchange membrane fuel cell (proton exchange membrane fuel cell) with Bipolar plates for optimum water treatment efficacy. Background technique [0002] With the progress of human civilization, the consumption of traditional energy such as coal, oil and natural gas continues to rise, causing serious pollution of the earth, leading to the deterioration of the environment such as greenhouse effect and acid rain. Human beings have clearly realized and realized that the stock of natural energy is limited, if it continues to be abused, it will be exhausted in the near future. Therefore, the world's advanced countries have recently been devoting themselves to research and development of new alternative energy sources, and fuel cells (fuel cells) are one of the important option...

AI Technical Summary

Problems solved by technology

However, in this existing method, the gas channel must be made into a single extended meandering and very thin channel, which increases the difficulty and related costs of manufacturing the bipolar plate 20

In addition, the slender and curved gas channels are likely to cause turbulence or other unfavorable flow conditions when the gas flows, which may affect the smooth progress of the reaction and reduce the efficiency of the fuel cell

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