Molicel P45B EVTOL Maximise flight time - optimise the cell selection, duty cycle and flight speed to maximise flight time.
Explore the Molicel P45B cell for EVTOL applications, designed to maximise flight time and optimise performance under challenging conditions.
Value Propositions
Cylindrical 21700 form factor for compact design.
Nominal capacity of 16.2 Wh and 4.5 Ah for reliable performance.
Top-quartile volumetric energy density of 633 Wh/l for extended flight time.
Maximum continuous discharge of 45 A, ideal for high-demand UAV applications.
Gravimetric power density of 2314 W/kg, ensuring efficient energy delivery.
About the Cell
The Molicel P45B is a cylindrical 21700 cell with a nominal capacity of 16.2 Wh (4.5 Ah), designed for high-performance applications. It boasts a volumetric energy density of 633 Wh/l, placing it in the top-quartile compared to the median of 541.67 Wh/l in the database. The gravimetric energy density stands at 231.43 Wh/kg, which is around the median of 210 Wh/kg. With a maximum continuous discharge rate of 45 A, this cell is well-suited for demanding UAV applications, ensuring that it can deliver the necessary power without overheating. The volumetric power density of 6330.6 W/l is among the highest in the database, providing excellent performance for rapid energy delivery. Overall, the P45B is engineered to meet the rigorous demands of modern UAV operations.
Application Challenges
In the EVTOL sector, maximising flight time is crucial. The Molicel P45B cell is designed to optimise cell selection, duty cycle, and flight speed, ensuring that UAVs can operate efficiently. The challenge lies in balancing energy consumption with power demands, particularly in high-stress environments. Current and energy management are vital for extending flight duration, especially when operating in extreme conditions. The ability to predict battery performance under various loads and temperatures is essential for mission success, making the P45B an ideal choice for UAV applications.
Why this Cell
The Molicel P45B cell is specifically tailored for EVTOL applications, where maximising flight time is paramount. With a maximum continuous discharge rate of 45 A, it is positioned in the top-quartile compared to the median of 30 A in the database, ensuring it can handle high power demands. Its volumetric energy density of 633 Wh/l is significantly above the median, allowing for longer flight durations without increasing weight. The cell's design also incorporates advanced thermal management features, which help prevent overheating during operation, addressing a common pain point in UAV battery performance. This combination of high energy density and robust discharge capabilities makes the P45B an excellent choice for custom UAV battery packs.
How Model-Based Design Helps
Simulation and model-based design play a critical role in optimising UAV battery performance. By modelling load profiles, thermal behaviour, and voltage response, engineers can accurately predict how the Molicel P45B will perform under various conditions. This approach allows for the selection of the most suitable cell for specific mission profiles, ensuring that the UAV can achieve its operational goals without unexpected failures. For instance, simulating different flight speeds and duty cycles can help identify the optimal configuration for extending flight time while maintaining safety. This predictive capability is essential for UAV operators, particularly in mission-critical applications where reliability is non-negotiable.
