Fuel cell stack and fuel cell automobile

Abstract

The invention relates to a fuel cell stack and a fuel cell automobile. The fuel cell stack comprises two end plate structures and a plurality of unit cells which are connected between the two end plate structures through bolts and are connected in series, and each unit cell comprises two bipolar plates and a membrane electrode arranged between the two bipolar plates, wherein each bipolar plate comprises a main plate body, a plurality of gas flow channels and a plurality of cooling flow channels are arranged on the main plate body at intervals, the flow channel depths of the gas flow channels and the cooling flow channels are 0.28-0.32 mm, the flow channel fillet radiuses are 0.09-0.11 mm, the flow channel periods are smaller than or equal to 1 mm, the flow channel inclination angles are smaller than or equal to 5 degrees, and the plate thickness of the main plate body is 0.09-0.11 mm. According to the present invention, the problem that the fuel cell stack in the prior art can only beapplied to some specific places due to the size, the weight and the like, thereby greatly restricting the popularization and application of the fuel cells, can be solved.

Description

technical field [0001] The invention relates to the technical field of fuel cells, in particular to a fuel cell stack and a fuel cell vehicle. Background technique [0002] The fuel cell stack is the place where the electrochemical reaction occurs and is also the core part of the fuel cell power system. It is composed of multiple single cells stacked in series. Research on the progress and trend of research and development of metal bipolar plate stacks at home and abroad shows that the power and power density of fuel cell cells are on the rise. At present, the metal bipolar plate stacks that have been developed in the world can reach a volume power density of up to 3.0kW / L. It is predicted that there will be greater technological breakthroughs in the next five years. According to the development roadmap of China's fuel cell vehicles, the overall technical level of domestic fuel cell stacks is in a state of catching up. It is expected that the country will reach the internat...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a fuel cell stack and a fuel cell vehicle to solve the problem in the related art that the fuel cell stack can only be used in some specific places due to volume, weight and other reasons, which greatly restricts the popularization and application of fuel cells

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