Molicel P28B EVTOL Maximise flight time - optimise the cell selection, duty cycle and flight speed to maximise flight time.
Discover the Molicel P28B cell, designed for EVTOL applications to maximise flight time and optimise performance under demanding conditions.
Value Propositions
Cylindrical 18650 form factor for compact design.
Nominal capacity of 10.08 Wh and 2.8 Ah for reliable energy delivery.
Volumetric energy density of 569 Wh/l, +9% vs database median of 541 Wh/l.
Gravimetric power density of 3,000 W/kg, top-quartile vs median of 750 W/kg.
Maximum continuous discharge of 40 A, top-quartile vs median of 30 A.
About the Cell
The Molicel P28B is a cylindrical 18650 lithium-ion cell with a nominal capacity of 10.08 Wh (2.8 Ah). It boasts a volumetric energy density of 569 Wh/l, which is +9% compared to the database median of 541 Wh/l. The gravimetric energy density stands at 210 Wh/kg, which is around the median. With a volumetric power density of 8,126 W/l, it ranks among the highest in the database, providing exceptional performance for demanding applications. The maximum continuous discharge rate of 40 A places it in the top-quartile compared to the median of 30 A, making it suitable for high-drain applications such as UAVs. This cell is designed to meet the rigorous demands of EVTOL applications, ensuring reliability and efficiency.
Application Challenges
In EVTOL applications, maximising flight time is critical. The Molicel P28B cell is engineered to optimise cell selection, duty cycle, and flight speed, which are essential for extending drone flight times. The challenge lies in balancing energy output with weight and thermal management. High energy density is crucial for long endurance missions, while the ability to manage heat generation during high discharge rates is vital to prevent overheating. The P28B's specifications enable it to meet these challenges effectively, ensuring that UAVs can operate efficiently in various environments.
Why this Cell
The Molicel P28B cell is an ideal choice for EVTOL applications due to its impressive specifications. With a volumetric energy density of 569 Wh/l, it is +9% above the median, allowing for longer flight times without increasing weight. The maximum continuous discharge rate of 40 A ensures that it can handle the high power demands of UAVs, placing it in the top-quartile compared to the median of 30 A. This combination of high energy and power density makes the P28B suitable for applications requiring both endurance and performance, addressing the core challenge of maximising flight time.
How Model-Based Design Helps
Simulation and model-based design play a crucial role in optimising the performance of the Molicel P28B cell for EVTOL applications. By modelling load profiles, thermal behaviour, and voltage response, engineers can predict how the cell will perform under various conditions. This approach allows for the identification of optimal duty cycles and flight speeds, ensuring that the cell operates within safe thermal limits while delivering the required energy. Additionally, simulations can help in assessing the impact of different environmental conditions on battery performance, enabling better planning and execution of UAV missions.
