EVE Energy 25P 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 25P cell, designed for fast charging in EVTOL applications, ensuring safety and efficiency without overheating or degradation.
Value Propositions
Cylindrical 18650 form factor for compact design.
Nominal capacity of 9.0 Wh and 2.5 Ah for reliable performance.
Top-quartile volumetric energy density of 517 Wh/l for efficient space usage.
Maximum continuous discharge of 30.0 A, ensuring high performance under load.
Gravimetric power density of 2250 W/kg, ideal for demanding UAV applications.
About the Cell
The EVE Energy 25P cell features a cylindrical 18650 form factor, providing a nominal capacity of 9.0 Wh and 2.5 Ah. With a volumetric energy density of 517 Wh/l, it ranks in the top-quartile compared to the database median of 542 Wh/l. The cell also boasts a maximum continuous discharge of 30.0 A, which is above the median of 30 A, making it suitable for high-demand applications. Additionally, the gravimetric energy density of 188 Wh/kg is competitive, providing a lightweight solution for UAVs. This cell is designed to meet the rigorous demands of fast charging while maintaining safety and efficiency.
Application Challenges
In the EVTOL sector, fast charging of batteries is critical to ensure operational efficiency. The challenge lies in charging the EVE Energy 25P cell quickly without overheating or causing lithium plating, which can degrade performance and pose safety risks. Effective thermal management is essential to prevent overheating during rapid charge cycles. The high energy density of the 25P cell allows for a compact battery design, but it also necessitates careful monitoring of charge rates to maintain safety. The ability to deliver high power outputs while managing thermal conditions is crucial for the success of UAV operations in various environments.
Why this Cell
The EVE Energy 25P cell is particularly suited for fast charging applications due to its high maximum continuous discharge rate of 30.0 A, which is in the top-quartile compared to the median of 30 A. This capability allows for quick energy delivery, essential for UAVs that require rapid turnaround times. Additionally, the cell's volumetric energy density of 517 Wh/l ensures that it can store significant energy in a compact form, making it ideal for lightweight drone battery packs. The combination of high energy density and robust discharge rates positions the 25P as an optimal choice for UAV battery optimization, ensuring that drones can operate efficiently without compromising safety.
How Model-Based Design Helps
Simulation and model-based design play a vital role in optimising the performance of the EVE Energy 25P cell for fast charging applications. By modelling load profiles and thermal behaviour, engineers can predict how the cell will perform under various conditions, including rapid charging scenarios. This approach allows for the identification of optimal charge rates that prevent overheating while maximising energy delivery. Additionally, simulations can help in understanding voltage sag and usable energy, ensuring that the selected cell meets the specific demands of UAV missions. This predictive capability reduces the risk of failure and enhances the reliability of drone operations, making it a critical tool in the design process.
