Samsung 40T3 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 40T3 cell for fast charging applications in EVTOLs, optimising performance while preventing overheating and degradation.
Value Propositions
Cylindrical 21700 form factor for efficient design.
Nominal capacity of 14.4 Wh and 4.0 Ah for reliable performance.
Top-quartile power density (+58% vs median 2,029 W/kg) for brisk current draws.
Maximum continuous discharge of 50.0 A, ensuring robust performance.
Volumetric energy density of 579 Wh/l, among the highest in the database.
About the Cell
The Samsung 40T3 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 579 Wh/l, it ranks among the highest in the database, ensuring efficient space utilisation. The gravimetric energy density stands at 205.714 Wh/kg, which is around the median, making it a solid choice for various applications. The cell boasts a maximum continuous discharge of 50.0 A, which places it in the top-quartile compared to the median of 30 A. Additionally, the volumetric power density reaches 7,240.55 W/l, significantly exceeding the median of 2,029 W/l, making it suitable for high-performance applications. Overall, the Samsung 40T3 is engineered for demanding environments, particularly in EVTOL applications where rapid charging and high energy output are critical.
Application Challenges
In the EVTOL sector, fast charging of batteries is paramount. The challenge lies in charging the battery quickly without overheating the cells or causing lithium plating, which could degrade the battery or lead to catastrophic failures. Effective thermal management is essential to prevent overheating during rapid charge cycles. The Samsung 40T3 cell, with its high maximum continuous discharge of 50.0 A, is designed to handle significant current loads, reducing the risk of overheating. Furthermore, the cell's high energy density ensures that it can deliver the required power without compromising safety. As UAV technology advances, the need for lightweight, high-capacity battery packs becomes increasingly important, making the Samsung 40T3 an ideal candidate for modern drone applications.
Why this Cell
The Samsung 40T3 cell is specifically designed to meet the demands of fast charging in EVTOL applications. Its maximum continuous discharge of 50.0 A allows for rapid energy transfer, essential for quick turnaround times. This performance is complemented by a volumetric energy density of 579 Wh/l, which is among the highest in the database, ensuring that the cell can store significant energy in a compact form. Additionally, the gravimetric power density of 2,571.43 W/kg places it in the top-quartile compared to the median of 750 W/kg, making it suitable for high discharge rate UAV batteries. The combination of these metrics ensures that the Samsung 40T3 can effectively support the demanding requirements of fast charging without overheating, thus enhancing overall UAV mission endurance.
How Model-Based Design Helps
Simulation and model-based design play a crucial role in optimising the performance of the Samsung 40T3 cell in EVTOL applications. By modelling load profiles and thermal behaviour, engineers can predict how the cell will perform under various charging conditions. This includes assessing heat generation during rapid charging and understanding voltage sag under load. By simulating these factors, designers can select the most suitable cells for specific applications, ensuring that the chosen battery can handle the required energy output without overheating. Furthermore, simulation allows for the evaluation of usable energy across different flight profiles, enabling operators to make informed decisions about battery selection and mission planning. This predictive capability is vital for ensuring reliability and safety in UAV operations, particularly in high-stakes environments.
