Automotive fuel cell stack and module durability assessment condition and assessment method

Abstract

An automotive fuel cell stack and module durability assessment condition includes a warm-up process, a downtown condition and a suburban condition, the running time of the downtown condition under idle load power accounts for 60 percent of the running time of the downtown condition, the running time of the downtown condition under common load power accounts for 30 percent of the running time of the downtown condition, and the running time of the downtown condition under high-speed load power accounts for 10 percent of the running time of the downtown condition; the running time of the suburban condition under idle load power accounts for 20 percent of the running time of the suburban condition, the running time of the suburban condition under common load power accounts for 50 percent of the running time of the suburban condition, and the running time of the suburban condition under high-speed load power accounts for 30 percent of the running time of the suburban condition. A test is carried out alternately between the suburban condition and the downtown condition until a tested fuel cell stack is attenuated to a specified value. The durability assessment condition can effectively simulate the actual running condition of an electric automobile with automotive fuel cells, shorten the test time, save the cost and discover factors affecting the lives of the fuel cells in time.

Description

technical field [0001] The invention relates to the technical field of fuel cells, in particular to the vehicle fuel cell stack and module durability testing technology. Background technique [0002] There are many types of fuel cell vehicles in the prior art, and some of them have been demonstrated. However, the existing fuel cell vehicles are still a long way from large-scale commercial application, and the constraints are mainly the cost and lifespan of vehicle fuel cells in addition to the hydrogen source. [0003] The service life of fuel cells for vehicles must reach more than 5,000h to meet the requirements of commercial production. The service life of fuel cells in existing technologies is only about 2,000h, which is far from the indicators required by commercial production (U.S.Department of Energy.Multi-year research, department, and demonstration plan: Planned program activities for 2003-2010. Available from: http: / / www1.eere.energy.gov / hydrogen and fuel cells / my...

AI Technical Summary

Problems solved by technology

However, there are not many specific fuel cell life test methods

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