Molicel M65A EVTOL Maximise flight time - optimise the cell selection, duty cycle and flight speed to maximise flight time.
Discover the Molicel M65A cell for EVTOL applications, designed to maximise flight time while overcoming core technical challenges in drone battery design.
Value Propositions
Cylindrical 21700 form factor for compact design.
Nominal capacity of 23.4 Wh and 6.5 Ah for extended use.
Volumetric energy density of 914 Wh/l, top-quartile vs median.
Gravimetric power density of 1256 W/kg, +58% vs median.
Maximum continuous discharge of 26 A, top-quartile vs median.
About the Cell
The Molicel M65A is a cylindrical 21700 cell with a nominal capacity of 23.4 Wh (6.5 Ah). It boasts a volumetric energy density of 914 Wh/l, which is among the highest in the database, and a gravimetric energy density of 314 Wh/kg, placing it in the top quartile compared to the median of 210 Wh/kg. The cell's volumetric power density is 3655 W/l, significantly above the median of 2029 W/l, making it an excellent choice for high-performance applications. Additionally, the maximum continuous discharge rate of 26 A positions it in the top quartile against the median of 30 A, ensuring reliable performance under demanding conditions.
Application Challenges
In EVTOL applications, maximising flight time is critical. The Molicel M65A cell's high energy density allows for longer missions without increasing weight, which is vital for drone battery design. Optimising the cell selection and duty cycle directly impacts the UAV's operational efficiency. The challenge lies in balancing energy output with thermal management to prevent overheating, especially during high discharge scenarios. This cell's specifications support the need for lightweight drone battery packs that can deliver consistent performance in extreme environments, ensuring mission success.
Why this Cell
The Molicel M65A cell is ideal for EVTOL applications due to its impressive specifications. With a volumetric energy density of 914 Wh/l, it is among the highest in the database, allowing for lightweight designs that do not compromise on performance. The maximum continuous discharge of 26 A ensures that the cell can handle demanding flight profiles, making it suitable for UAV battery optimisation. Additionally, its gravimetric power density of 1256 W/kg, which is +58% vs the median, supports high energy demands during critical flight phases, enhancing overall mission endurance.
How Model-Based Design Helps
Simulation and model-based design play a crucial role in optimising the Molicel M65A 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 accurate assessments of usable energy and helps in selecting the right cell for specific missions. For instance, simulating thermal rise during high discharge scenarios ensures that the cell operates within safe limits, preventing overheating and extending the overall lifespan of the battery. This predictive capability is essential for ensuring reliability and efficiency in UAV operations.
