Molicel M65A Safety and risk management - particularly around overheating and thermal runaway during flight.
Explore the Molicel M65A cell for UAV applications, optimising safety and performance in thermal management during flight. Ideal for drone battery design.
Value Propositions
Cylindrical 21700 form factor for optimal space utilisation.
Nominal capacity of 23.4 Wh and 6.5 Ah for extended flight times.
Top-quartile volumetric energy density of 914 Wh/l for lightweight designs.
Maximum continuous discharge of 26 A, ensuring high performance under load.
Gravimetric power density of 1256 W/kg, ideal for high energy demands.
About the Cell
The Molicel M65A is a cylindrical 21700 cell designed for UAV applications, featuring a nominal capacity of 23.4 Wh and 6.5 Ah. Its volumetric energy density of 914 Wh/l positions it among the highest in the database, providing significant advantages for drone battery design. The cell's gravimetric energy density of 314 Wh/kg ensures that it remains lightweight, which is crucial for long endurance drone batteries. Additionally, the M65A boasts a volumetric power density of 3655 W/l, which is top-quartile compared to the median of 2029 W/l, making it suitable for high energy density drone batteries. With a maximum continuous discharge of 26 A, this cell can handle demanding applications without compromising safety, especially in scenarios where thermal management is critical.
Application Challenges
In the context of EVTOL and safety management, the Molicel M65A addresses significant challenges related to overheating and thermal runaway during flight. UAVs often operate in extreme environments where battery performance can be compromised. The ability to maintain a high discharge rate while managing thermal conditions is essential for mission success. The M65A's specifications, including its high energy density and robust discharge capabilities, make it a suitable choice for applications requiring reliable performance under varying conditions. Ensuring that drones can operate safely without overheating is paramount, particularly in critical missions where failure could lead to catastrophic outcomes.
Why this Cell
The Molicel M65A is specifically engineered to meet the rigorous demands of UAV applications. With a maximum continuous discharge rate of 26 A, it is positioned in the top-quartile compared to the median of 30 A, allowing for high discharge rates essential for dynamic flight profiles. Its volumetric energy density of 914 Wh/l is among the highest in the database, providing the necessary energy for extended missions without adding excessive weight. This cell's gravimetric power density of 1256 W/kg ensures that it can deliver the required power efficiently, making it an ideal choice for custom UAV battery packs designed for long endurance and safety.
How Model-Based Design Helps
Simulation and model-based design play a crucial role in optimising the performance of the Molicel M65A in UAV applications. By modelling load profiles and thermal behaviour, engineers can predict how the cell will perform under various conditions, including high discharge rates and extreme temperatures. This predictive capability allows for the selection of the most suitable cells for specific missions, ensuring that thermal management strategies are effective in preventing overheating. For instance, simulations can identify the optimal charge and discharge cycles, helping to maximise the usable energy while maintaining safety. This approach not only enhances the reliability of drone operations but also reduces the risk of thermal runaway, ultimately leading to safer and more efficient UAV missions.
