EVE Energy 40PL Drones 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.
Discover the EVE Energy 40PL cell for drones, designed for fast charging without overheating, ensuring safety and efficiency in UAV applications.
Value Propositions
Cylindrical 21700 form factor for compact design.
Nominal capacity of 14.4 Wh and 4.0 Ah for reliable performance.
Top-quartile volumetric energy density of 578 Wh/l for extended flight times.
Maximum continuous discharge of 70 A, ideal for high-demand UAV applications.
Gravimetric power density of 3,761 W/kg, supporting rapid energy delivery.
About the Cell
The EVE Energy 40PL cell features a cylindrical 21700 form factor, providing a nominal capacity of 14.4 Wh and 4.0 Ah. With a volumetric energy density of 578 Wh/l, it ranks in the top-quartile compared to the database median of 542 Wh/l, making it an excellent choice for drone applications. The cell also boasts a maximum continuous discharge of 70 A, which is significantly above the median of 30 A, ensuring it can handle high power demands during flight. Additionally, the gravimetric energy density of 215 Wh/kg is around the median, providing a balanced performance for various UAV designs. The cell's design prioritises safety and efficiency, crucial for fast charging applications.
Application Challenges
In the context of drones, fast charging presents unique challenges. The need to charge batteries quickly without overheating is paramount, as excessive heat can lead to lithium plating, which degrades battery performance and poses safety risks. The EVE Energy 40PL cell addresses these challenges with its high maximum continuous charge rate of 8.0 A, which is above the median of 8 A, allowing for efficient charging while maintaining thermal stability. Effective battery thermal management is essential to prevent overheating, particularly in high-energy density applications where rapid discharge is required. The ability to optimise UAV battery packs for endurance and performance is critical, especially in demanding environments.
Why this Cell
The EVE Energy 40PL cell is particularly suited for fast-charging applications in drones due to its impressive specifications. With a maximum continuous charge rate of 8.0 A, it allows for rapid charging without compromising safety, which is crucial in preventing overheating. The cell's volumetric power density of 10,108 W/l is among the highest in the database, providing significant power output for demanding UAV operations. Furthermore, its gravimetric power density of 3,761 W/kg ensures that the cell can deliver energy efficiently, supporting extended flight times and improved UAV mission endurance. This combination of features makes the 40PL an ideal choice for custom UAV battery packs that require high performance and reliability.
How Model-Based Design Helps
Simulation and model-based design play a critical role in optimising the performance of the EVE Energy 40PL cell for drone 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 the identification of optimal charging strategies that minimise the risk of overheating while maximising energy delivery. For instance, simulations can help determine the best charge rates to use in different environmental conditions, ensuring that the battery remains within safe operating temperatures. Additionally, modelling can assist in selecting the right cell for specific UAV missions, enhancing overall powertrain efficiency and reliability. This data-driven approach reduces the need for costly trial-and-error testing, leading to faster development cycles and more effective battery designs.
