EVE Energy 50PL Fast charge of the batteries - how to charge the battery quickly without overheating the cells or causing lithium plating which could degrade the battery or cause it to catch fire.
Explore the EVE Energy 50PL cell for fast charging applications, optimising UAV battery performance while preventing overheating and degradation.
Value Propositions
Cylindrical 21700 form factor for compact designs.
Nominal capacity of 18.0 Wh and 5.0 Ah for efficient energy storage.
Top-quartile volumetric power density of 11,580 W/l for rapid energy delivery.
Gravimetric energy density of 250 Wh/kg, ideal for lightweight UAV applications.
Maximum continuous discharge of 80 A supports high-performance UAV operations.
About the Cell
The EVE Energy 50PL cell features a cylindrical 21700 form factor, providing a nominal capacity of 18.0 Wh and 5.0 Ah. With a volumetric energy density of 724 Wh/l, it stands out in the market, being in the top-quartile compared to the median of 542 Wh/l. The gravimetric energy density of 250 Wh/kg is also noteworthy, as it is around the median of 210 Wh/kg, making it suitable for lightweight drone applications. The cell's volumetric power density of 11,580 W/l is among the highest in the database, significantly enhancing its capability for fast charging applications. Additionally, the maximum continuous discharge rate of 80 A allows for high-performance operations, making it ideal for demanding UAV tasks.
Application Challenges
In the context of EVTOL and the challenge of fast charging, it is crucial to manage the thermal performance of batteries. Rapid charging can lead to overheating, which poses risks such as lithium plating and potential fire hazards. The EVE Energy 50PL cell's design mitigates these risks through its robust thermal management capabilities. The high maximum continuous charge rate of 10 A (2 C) allows for efficient charging while maintaining safety. This is essential for applications requiring quick turnaround times, such as drone deliveries or emergency response missions. The ability to charge quickly without compromising safety is paramount in ensuring reliable UAV operations.
Why this Cell
The EVE Energy 50PL cell is particularly suited for fast charging applications due to its impressive specifications. With a maximum continuous charge rate of 10 A, it allows for rapid energy replenishment, crucial for UAVs that require quick turnaround times. The cell's volumetric power density of 11,580 W/l is among the highest in the database, enabling it to deliver power efficiently during demanding operations. Furthermore, its gravimetric energy density of 250 Wh/kg ensures that UAVs can maintain a lightweight design while achieving high performance. This combination of features makes the 50PL an excellent choice for applications where both speed and safety are critical.
How Model-Based Design Helps
Simulation and model-based design play a vital role in optimising the performance of the EVE Energy 50PL cell in UAV applications. By modelling load profiles, thermal rise, and voltage sag, engineers can predict how the cell will behave under various conditions. This predictive capability allows for the selection of the most suitable cells for specific missions, ensuring that the UAV can achieve its performance targets without risking overheating or degradation. For instance, simulations can identify the optimal charging protocols that maximise efficiency while preventing lithium plating. This approach not only enhances the reliability of UAV operations but also reduces the need for extensive trial-and-error testing, saving time and resources.
