TerraE 25P4 Safety and risk management - particularly around overheating and thermal runaway during flight.
Discover the TerraE 25P4 cell, designed for UAV applications focusing on safety and risk management, ensuring optimal performance and reliability.
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 (+96% vs median 2,029 W/l) for high performance.
Gravimetric energy density of 191.489 Wh/kg, around median for efficient weight management.
Maximum continuous discharge of 30.0 A, top-quartile vs median 30 A.
About the Cell
The TerraE 25P4 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 498 Wh/l, it is designed for high energy applications. The cell boasts a volumetric power density of 5977 W/l, placing it among the highest in the database, and a gravimetric power density of 2298 W/kg, which is also top-quartile compared to the median of 750 W/kg. This combination of energy and power density makes it suitable for demanding UAV applications, particularly in EVTOL scenarios where weight and space are critical. The maximum continuous charge current is 6.0 A, allowing for efficient energy replenishment, while the maximum continuous discharge current of 30.0 A ensures robust performance under load. Overall, the TerraE 25P4 cell is engineered to meet the rigorous demands of modern drone technology.
Application Challenges
In the context of EVTOL applications, safety and risk management are paramount, particularly concerning overheating and thermal runaway during flight. The TerraE 25P4 cell's specifications are crucial in addressing these challenges. With a maximum continuous discharge of 30.0 A, it can handle high power demands without overheating, which is essential for maintaining operational safety. The cell's high energy density allows for longer flight times, which is vital for mission success in critical applications. Additionally, effective battery thermal management is necessary to prevent thermal runaway, making the selection of the right cell imperative. The 25P4's design mitigates these risks, ensuring reliable performance in extreme environments and enhancing overall UAV mission endurance.
Why this Cell
The TerraE 25P4 cell is specifically designed for UAV applications, offering a nominal capacity of 9.0 Wh and a maximum continuous discharge of 30.0 A, which is top-quartile compared to the median of 30 A. This capability is essential for high energy density drone batteries, enabling extended flight times and improved mission endurance. The cell's volumetric energy density of 498 Wh/l is around the median, ensuring efficient use of space while maintaining safety standards. Furthermore, the gravimetric energy density of 191.489 Wh/kg is also around the median, providing a balance between weight and performance. These metrics make the TerraE 25P4 an ideal choice for custom UAV battery packs, ensuring that operators can rely on their drones for critical missions without compromising safety.
How Model-Based Design Helps
Simulation and model-based design play a crucial role in optimising the performance of the TerraE 25P4 cell for UAV applications. By modelling load profiles, thermal rise, and voltage sag, engineers can accurately predict the cell's behaviour under various conditions. This predictive capability allows for the selection of the most suitable cell for specific missions, ensuring that the drone can deliver the required thrust and energy throughout its flight envelope. For instance, simulating thermal behaviour helps identify potential overheating issues, enabling proactive measures to prevent thermal runaway. Additionally, accurate modelling of usable energy ensures that operators can make informed decisions about battery state of charge (SoC) and mission feasibility, ultimately enhancing the reliability and safety of UAV operations.
