Samsung 40T Cell for EVTOL Application: Maximise flight time - optimise the cell selection, duty cycle and flight speed to maximise flight time.
Discover the Samsung 40T cell designed for EVTOL applications, optimising flight time and performance while overcoming key challenges in drone battery design.
Value Propositions
Cylindrical 21700 form factor for efficient space utilisation.
Nominal capacity of 14.4 Wh and 4.0 Ah for reliable energy supply.
Top-quartile volumetric energy density of 579 Wh/l, +10% vs median.
Maximum continuous discharge of 45 A, top-quartile vs median 30 A.
Gravimetric power density of 2314 W/kg, +64% vs median.
About the Cell
The Samsung 40T cell features a cylindrical 21700 form factor, providing a nominal capacity of 14.4 Wh and 4.0 Ah. Its volumetric energy density of 579 Wh/l places it in the top-quartile compared to the median of 541.67 Wh/l, making it an excellent choice for applications requiring high energy density. Additionally, the cell boasts a maximum continuous discharge of 45 A, which is significantly higher than the median of 30 A, ensuring robust performance under demanding conditions. The gravimetric energy density of 205.714 Wh/kg is also competitive, being close to the median of 210 Wh/kg, while the gravimetric power density of 2314 W/kg is +64% above the median of 750 W/kg, indicating its capability to deliver high power outputs efficiently.
Application Challenges
In EVTOL applications, maximising flight time is critical. The Samsung 40T cell's high energy density allows for extended flight durations, which is essential for tasks such as remote inspections and emergency responses. The challenge lies in optimising the cell selection, duty cycle, and flight speed to ensure that the drone can operate effectively without overheating or compromising safety. With the increasing demand for long endurance drone batteries, the ability to predict performance under various conditions is vital. The 40T cell's specifications support the need for lightweight drone battery packs that do not sacrifice power or reliability, addressing the pain points of extending flight time and improving UAV mission endurance.
Why this Cell
The Samsung 40T cell is particularly suited for EVTOL applications due to its impressive specifications. With a maximum continuous discharge of 45 A, it is in the top-quartile compared to the median of 30 A, ensuring that it can handle the high power demands of UAVs during critical phases of flight. Its volumetric energy density of 579 Wh/l, which is +10% above the median, allows for longer flight times without increasing the weight of the battery pack. This is crucial for applications that require both endurance and efficiency. Furthermore, the cell's gravimetric power density of 2314 W/kg, significantly higher than the median, supports rapid acceleration and responsiveness, making it an ideal choice for dynamic flight profiles.
How Model-Based Design Helps
Simulation and model-based design play a pivotal role in optimising the performance of the Samsung 40T cell in EVTOL applications. By modelling load profiles and thermal behaviour, engineers can predict how the cell will perform under various conditions, such as different flight speeds and duty cycles. This approach allows for accurate predictions of voltage sag and usable energy, ensuring that the selected cell meets the specific requirements of the mission. For instance, simulations can identify the optimal cruise velocity that balances energy consumption and aerodynamic efficiency, leading to longer missions without hardware changes. Additionally, thermal modelling helps prevent overheating, ensuring safe operation and extending the life of the battery pack.
