Durability test method for fuel cell stack
A fuel cell stack and test method technology, applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve the problems of no fuel cell stack durability test method
Active Publication Date: 2020-10-30
TSINGHUA UNIV
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Problems solved by technology
At present, there are many methods for testing the durability of fuel cells, but there are almost no methods for testing the durability of fuel cell stacks based on the actual operating data of urban buses.
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[0038] In order to make the above-mentioned purpose, features and advantages of the present application more obvious and understandable, the specific implementation manners of the present application will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the application. However, the present application can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific implementation disclosed below.
[0039] It should be noted that when an element is referred to as being “disposed on” another element, it may be directly on the other element or there may also be an intervening element. When an element is referred to as being "connected to" a...
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This application relates to a durability testing method of a fuel cell stack. First, a mathematical model of the relationship between multiple parameters controlled by the battery's state of charge is constructed. Secondly, the actual operating data of the vehicle is provided, and based on the actual operating data and mathematical model of the vehicle, the working condition data of the vehicle during startup, operation and shutdown are obtained. Finally, during the test process, the workflow of the fuel cell durability test was adopted, and the obtained working condition data of the vehicle during startup, operation and shutdown were added to the workflow of the fuel cell durability test to obtain the in-process data. The polarization curve of the fuel cell under the condition data is obtained to obtain the durability test results of the fuel cell. The durability test method of the fuel cell stack is based on real road data. By building a mathematical model, the error between the time percentage of each link in the test process and the statistical data is minimized to evaluate the life of the vehicle during operation.
Description
technical field [0001] The present application relates to the battery field, in particular to a durability test method for a fuel cell stack. Background technique [0002] The high cost and short service life of fuel cell systems are the bottlenecks restricting the large-scale commercialization of fuel cell vehicles. In order to clarify the degradation behavior of the fuel cell stack under different cycle conditions to improve the durability and reliability of the system, it is necessary to develop a new protocol to test its performance. [0003] Fuel cell organizations in the United States and Europe have developed corresponding test methods. The US Fuel Cell Technology Team (FCTT) proposed two durability test methods, that is, durability tests under dry and wet conditions. In the US Department of Energy (DOE) hydrogen energy project, four typical durability test methods are summarized: steady-state durability test, potential cycle durability test, start / shutdown cycle du...
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IPC IPC(8): G01R31/378G01R31/367
CPCG01R31/378G01R31/367G01R31/392
Inventor 徐梁飞丁玉杰胡尊严李建秋欧阳明高
Owner TSINGHUA UNIV