Samsung 25S 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 Samsung 25S cell for drones, designed for fast charging while preventing overheating and lithium plating, ensuring safety and performance.
Value Propositions
Cylindrical 18650 form factor for compact design.
Nominal capacity of 9.125 Wh and 2.45 Ah for reliable energy supply.
Top-quartile volumetric energy density of 526 Wh/l for efficient space usage.
Maximum continuous discharge of 35 A, ideal for high-demand applications.
Gravimetric power density of 2,681 W/kg supports rapid energy delivery.
About the Cell
The Samsung 25S cell features a cylindrical 18650 form factor, making it a compact choice for drone applications. With a nominal capacity of 9.125 Wh and 2.45 Ah, it provides a reliable energy supply for various UAV operations. Its volumetric energy density of 526 Wh/l places it in the top-quartile compared to the database median of 542 Wh/l, ensuring efficient use of space within battery packs. Additionally, the cell boasts a maximum continuous discharge of 35 A, which is significantly higher than the database median of 30 A, making it suitable for high-demand applications. The gravimetric power density of 2,681 W/kg supports rapid energy delivery, essential for maintaining drone performance during critical missions. Overall, the Samsung 25S cell is designed to meet the rigorous demands of modern drone technology, providing both power and efficiency.
Application Challenges
In the realm of drones, fast charging of batteries is crucial to ensure operational efficiency. The challenge lies in charging the battery quickly without overheating the cells or causing lithium plating, which can degrade the battery or even lead to fire hazards. The Samsung 25S cell addresses these challenges with its robust design and high discharge capabilities. The need for lightweight drone battery packs that do not compromise on energy density is paramount, especially in applications requiring long endurance and high performance. By optimising the charge rates and managing thermal conditions effectively, the Samsung 25S cell can significantly enhance UAV mission endurance while preventing overheating, thus ensuring safe and reliable operations.
Why this Cell
The Samsung 25S cell is an excellent choice for drone applications due to its impressive specifications. With a maximum continuous discharge of 35 A, it is positioned in the top-quartile compared to the database median of 30 A, allowing for high energy demands during flight. Its volumetric energy density of 526 Wh/l ensures that drones can carry more energy without increasing weight, which is critical for extending flight times. Furthermore, the cell's gravimetric power density of 2,681 W/kg supports rapid energy delivery, essential for maintaining performance during demanding missions. This combination of high energy density and discharge capabilities makes the Samsung 25S cell ideal for fast charging applications, addressing the core challenge of overheating and lithium plating effectively.
How Model-Based Design Helps
Simulation and model-based design play a crucial role in optimising the performance of the Samsung 25S cell in drone applications. By modelling load profiles and thermal behaviour, engineers can predict how the cell will perform under various conditions, including rapid charging scenarios. This allows for accurate assessments of heat generation and voltage response, ensuring that the cell operates within safe limits. For instance, simulations can identify the optimal charge rates that prevent overheating while maximising energy input. Additionally, by analysing the internal temperature rise during discharge, engineers can select the best thermal management strategies to avoid lithium plating. This predictive capability not only enhances the reliability of drone operations but also reduces the need for costly trial-and-error testing, ultimately leading to safer and more efficient UAV designs.
