锂离子电池动态特性对倾转式 eVTOL 飞行性能的影响

To accurately analyze the changes in the flight profile and the impact of the dynamic characteristics of lithium-ion batteries on flight performance of the tilt electric vertical takeoff and landing vehicle（eVTOL），an electric system model based on the characteristics of main components such as lithium-ion batteries was established，and a performance calculation method for eVTOL aircraft considering the dynamic characteristics of the battery was proposed. The influence of the dynamic characteristics of lithium-ion batteries was analyzed，and the electricity demand law of eVTOL aircraft was summarized. The performance simulation of an example aircraft shows that the dynamic characteristics of lithium-ion batteries have an impact on the power of the power system，resulting in that a battery output power density during hover descent is only 78% of that during the hover phase，simultaneously affecting cruise performance，resulting in a reduction of 16% and 17% in unit energy consumption and range in the final stage of cruise compared to the initial stage.