EVE Energy 50PL Safety and risk management - particularly around overheating and thermal runaway during flight.
Explore EVE Energy's 50PL cell for UAV applications, addressing safety and thermal challenges with high energy density and performance.
Value Propositions
Cylindrical 21700 form factor for compact design.
Nominal capacity of 18.0 Wh and 5.0 Ah for reliable energy supply.
Volumetric energy density of 724 Wh/l, top-quartile vs median.
Gravimetric power density of 4000 W/kg, among the highest in database.
Maximum continuous discharge of 80 A, top-quartile vs median.
About the Cell
The EVE Energy 50PL cell is designed in a cylindrical 21700 form factor, offering a nominal capacity of 18.0 Wh (5.0 Ah). With a volumetric energy density of 724 Wh/l, it ranks in the top-quartile compared to the database median of 542 Wh/l. The gravimetric energy density stands at 250 Wh/kg, which is around the median. Additionally, the cell features a volumetric power density of 11,580 W/l, which is among the highest in the database, and a gravimetric power density of 4,000 W/kg, also among the highest. The maximum continuous discharge current of 80 A positions it in the top-quartile against the median of 30 A, making it suitable for demanding applications like UAVs. The standard charge current is 2.5 A, with a maximum continuous charge of 10 A, allowing for efficient energy management.
Application Challenges
In the context of EVTOL applications, safety and risk management are paramount, particularly concerning overheating and thermal runaway during flight. The 50PL cell's high energy density is crucial for long endurance missions, where every ounce of weight and every minute of airtime counts. The risk of thermal runaway can compromise mission integrity, making it essential to select cells that can handle high discharge rates while maintaining thermal stability. The EVE Energy 50PL cell's specifications, including a maximum continuous discharge of 80 A, help mitigate these risks, ensuring safe operation even under demanding conditions. The ability to predict and manage thermal behaviour is vital for UAV operators, especially in extreme environments where battery performance can be unpredictable.
Why this Cell
The EVE Energy 50PL cell is an excellent choice for UAV applications due to its impressive specifications. With a volumetric energy density of 724 Wh/l, it is in the top-quartile compared to the median of 542 Wh/l, providing extended flight times crucial for mission success. The maximum continuous discharge of 80 A positions it well for high discharge rate UAV batteries, ensuring reliable performance during critical operations. Additionally, the gravimetric power density of 4,000 W/kg is among the highest in the database, allowing for lightweight drone battery packs that do not compromise on power. This combination of high energy and power densities makes the 50PL cell ideal for applications requiring both endurance and safety, particularly in the EVTOL sector.
How Model-Based Design Helps
Simulation and model-based design play a critical role in optimising the performance of the EVE Energy 50PL cell for UAV applications. By modelling load profiles and thermal behaviour, engineers can predict how the cell will perform under various conditions, including high discharge rates and extreme temperatures. This predictive capability allows for the selection of the best cells for UAVs, ensuring that the chosen battery can handle the demands of the mission without overheating or risking thermal runaway. Furthermore, simulations can help in understanding voltage sag and usable energy, enabling operators to make informed decisions about mission feasibility based on battery state of charge (SoC) and environmental conditions. This approach not only enhances safety but also improves overall mission efficiency, allowing for better planning and execution of UAV operations.
