Zhongxin aviation energy storage section

What are the different types of storage systems for electric aircraft?

These are specific energy (Wh/kg), specific power (kW/kg), and volumetric energy density (Wh/L). There are four technologies for storage systems that are critical in the design of electric aircraft: battery, fuel cell, super capacitor, and flywheel.

How to determine the size of aircraft energy storage systems?

Based on the comprehensive analysis of hydrogen economy, FC aging cost, and aircraft stability, a multi-objective parameter optimization model is established to decide the size of aircraft energy storage systems and hyper-parameters in the power controller.

How to improve the efficiency of aircraft energy storage system?

To improve efficiency, the rated power of FC should be enlarged, which could bring serious weight penalty problems for the aircraft. After the battery is deployed in the aircraft energy storage system, the working points of the FC stack can be generally moved to the high-efficiency zone.

Why do aircraft use hybrid energy storage technology?

In (a), the FC works under idle and heavy load states in 23% and 65% more time, the reason is that it should cover all the power requirements of the aircraft in the whole voyage. Compared to FC aircraft, the use of hybrid energy storage technology can significantly relieve the working pressure of FC stack.

Why do aircraft batteries need chemistry and package design?

The combination of the need for high specific energy and specific power, very wide environmental capability and shallow depth of discharge, all underpinned by safety, implies that the optimization of both the chemistry and package design for aviation offer new challenges for the battery community.

Can hydrogen storage extend aircraft endurance?

With the latest hydrogen storage technologies , hydrogen storage gravimetric and volumetric density have reached 2.3 kWh/kg and 1.7 kWh/L, which can effectively extend aircraft endurance. However, the power density of the FC stack is insufficient compared to the battery pack [30, 31].