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Battery is a vital part of a fuel cell hybrid vehicle, and also the most difficult part to model due to its nonlinearity. Therefore, This paper presents an integrated software-hardware solution to simulate the fuel cell vehicle power train more accurately based on battery-in-the-loop, with the aid of RT-LAB™. Moreover, the average modeling technique is used together with RT-LAB's distributed cluster technology to realize real-time simulation of the Field-Oriented Controlled induction motor drive, and the Boost DC/DC converter. As a result, a virtual test bed, which is very similar to actual power train, is set up. Finally, on this test bed some tests are performed to verify the existing battery model and soc estimation method, and to give more accurate fuel consumption results.