EVE Energy 25P 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 25P cell for drones, designed for fast charging without overheating. Achieve optimal performance and safety in UAV applications.
Value Propositions
Cylindrical 18650 form factor for compact design.
Nominal capacity of 9.0 Wh and 2.5 Ah for reliable energy supply.
Top-quartile volumetric power density of 6,200 W/l for high performance.
Gravimetric energy density of 188 Wh/kg, ideal for lightweight applications.
Maximum continuous discharge of 30 A, supporting high-demand UAV operations.
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 is designed for efficient space utilisation in drone applications. The gravimetric energy density stands at 188 Wh/kg, making it suitable for lightweight drone battery packs. Additionally, the cell boasts a volumetric power density of 6,200 W/l, which is in the top-quartile compared to the database median of 2,029 W/l, ensuring it can deliver high power outputs when required. The maximum continuous discharge rate of 30 A allows for robust performance in demanding scenarios, while the standard charge current of 1.25 A ensures safe and efficient charging. This cell is engineered to meet the rigorous demands of drone battery design, ensuring reliability and performance in various UAV applications.
Application Challenges
In the realm of drones, fast charging of batteries presents significant challenges. The need to charge quickly without overheating the cells or causing lithium plating is paramount. Overheating can lead to battery degradation and potential safety hazards, making thermal management a critical aspect of UAV battery pack design. The EVE Energy 25P cell addresses these challenges with its high energy density and robust discharge capabilities. With a maximum continuous discharge of 30 A, it supports high-demand applications while maintaining safety standards. Effective battery thermal management is essential to prevent overheating, especially during rapid charging cycles. The ability to accurately predict the state of charge (SOC) is also crucial for ensuring mission success, particularly in extreme environments where temperature fluctuations can impact battery performance. The EVE Energy 25P cell is designed to excel in these conditions, providing reliable power for long endurance drone missions.
Why this Cell
The EVE Energy 25P cell is an excellent choice for drone applications due to its impressive specifications. With a maximum continuous discharge rate of 30 A, it is positioned in the top-quartile compared to the database median of 30 A, allowing for high discharge rates needed in demanding UAV operations. Its volumetric energy density of 517 Wh/l is also noteworthy, being around the median of 541.67 Wh/l, making it suitable for lightweight drone battery packs. The cell's gravimetric energy density of 188 Wh/kg is advantageous for extending drone flight times, addressing the pain point of improving UAV mission endurance. Furthermore, the high volumetric power density of 6,200 W/l ensures that the cell can deliver the necessary power without overheating, which is critical for fast charging applications. This combination of features makes the EVE Energy 25P cell a reliable choice for custom UAV battery packs, ensuring optimal performance and safety.
How Model-Based Design Helps
Simulation and model-based design play a crucial role in optimising the performance of the EVE Energy 25P cell in drone applications. By modelling load profiles, engineers can predict how the cell will behave under various conditions, including thermal rise and voltage sag. This predictive capability allows for the selection of the most suitable cell for specific mission profiles, ensuring that the drone can operate efficiently without risking battery failure. For instance, simulations can help identify the optimal charging rates that prevent overheating while maximising charge speed. Additionally, by analysing the usable energy across different flight scenarios, engineers can make informed decisions about battery selection and configuration, ultimately enhancing drone powertrain efficiency. This approach not only reduces the reliance on trial-and-error testing but also builds operator confidence in the reliability of the drone's battery system, making it a vital tool in the design and optimisation of UAV battery packs.
