BAK 45D Maximise flight time - optimise the cell selection, duty cycle and flight speed to maximise flight time.
Discover the BAK 45D cell designed for EVTOL applications, maximising flight time and optimising performance under challenging conditions.
Value Propositions
Cylindrical 21700 form factor for efficient design.
Nominal capacity of 15.84 Wh and 4.4 Ah for reliable performance.
Top-quartile volumetric energy density of 619 Wh/l, +14% vs median.
Maximum continuous discharge of 60 A, among the highest in database.
Gravimetric power density of 3130 W/kg, +62% vs median.
About the Cell
The BAK 45D cell features a cylindrical 21700 form factor, providing a nominal capacity of 15.84 Wh and 4.4 Ah. With a volumetric energy density of 619 Wh/l, it ranks in the top-quartile compared to the database median of 541.67 Wh/l, showcasing its efficiency for drone applications. The gravimetric energy density stands at 229.57 Wh/kg, which is around the median, ensuring a lightweight solution for UAVs. The cell's maximum continuous discharge rate of 60 A positions it among the highest in the database, making it suitable for high-demand applications. Additionally, the volumetric power density of 8447 W/l is impressive, providing robust performance for demanding flight profiles.
Application Challenges
In EVTOL applications, maximising flight time is critical. The BAK 45D cell's specifications directly address the challenge of optimising cell selection, duty cycles, and flight speeds. With a nominal capacity of 15.84 Wh, the cell ensures that drones can operate efficiently over extended periods. The high discharge rate of 60 A allows for rapid energy delivery, essential for maintaining performance during critical flight phases. Furthermore, the lightweight design contributes to overall UAV efficiency, enabling longer missions without compromising safety or performance.
Why this Cell
The BAK 45D cell is ideal for EVTOL applications due to its high energy density and robust discharge capabilities. With a volumetric energy density of 619 Wh/l, it is positioned in the top-quartile compared to the median of 541.67 Wh/l, ensuring that drones can carry more energy without increasing weight. The maximum continuous discharge rate of 60 A supports demanding flight profiles, making it suitable for high-performance UAVs. This cell's specifications align perfectly with the need to maximise flight time, optimise duty cycles, and enhance overall mission efficiency.
How Model-Based Design Helps
Simulation and model-based design play a crucial role in selecting the right battery cell for UAV applications. By modelling load profiles, thermal behaviour, and voltage response, engineers can predict how the BAK 45D 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. Accurate simulations help prevent issues such as overheating and ensure reliable performance, ultimately leading to improved mission success rates.
