TerraE 40P Weight v power trade off in pack design - how to pick the right balance.
Explore the TerraE 40P cell for UAV applications, optimising weight and power for enhanced drone performance and endurance.
Value Propositions
Cylindrical 21700 form factor for compact design.
Nominal capacity of 14.4 Wh and 4.0 Ah for reliable energy supply.
Top-quartile volumetric energy density of 566 Wh/l for efficient space usage.
Maximum continuous discharge of 45.0 A, ensuring high performance under load.
Gravimetric power density of 2,418 W/kg, ideal for dynamic UAV applications.
About the Cell
The TerraE 40P cell features a cylindrical 21700 form factor, offering a nominal capacity of 14.4 Wh and 4.0 Ah. With a volumetric energy density of 566 Wh/l, it ranks in the top-quartile compared to the database median of 542 Wh/l, making it an excellent choice for UAV applications. The cell's gravimetric energy density is 215 Wh/kg, which is around the median, providing a balanced energy output for various drone missions. Additionally, the maximum continuous discharge rate of 45.0 A positions it among the highest in the database, ensuring robust performance during demanding operations. The cell's volumetric power density of 6,365 W/l is also noteworthy, being significantly higher than the median of 2,029 W/l, which is crucial for applications requiring quick bursts of power.
Application Challenges
In the context of EVTOL and the weight versus power trade-off in pack design, selecting the right battery cell is critical. UAVs require batteries that not only provide sufficient energy for extended flight times but also maintain a lightweight profile to enhance overall efficiency. The challenge lies in balancing these two factors; a heavier battery may reduce flight time, while a lighter battery may not deliver the necessary power. The TerraE 40P cell addresses this challenge with its high energy density and power capabilities, allowing for optimal UAV battery pack design. This is particularly important for applications such as long endurance drone batteries and heavy lift drone batteries, where performance and reliability are paramount.
Why this Cell
The TerraE 40P cell is an ideal choice for UAV applications due to its impressive specifications. With a maximum continuous discharge rate of 45.0 A, it is positioned among the highest in the database, allowing for efficient power delivery during critical flight phases. The cell's volumetric energy density of 566 Wh/l is top-quartile, providing a significant advantage in weight-sensitive applications. This makes it particularly suitable for custom UAV battery packs that require a balance of weight and power. Furthermore, the gravimetric power density of 2,418 W/kg ensures that the cell can support high discharge rates, which is essential for maintaining drone performance during demanding missions. These attributes make the TerraE 40P a strong contender for those looking to optimise UAV battery performance.
How Model-Based Design Helps
Simulation and model-based design play a crucial role in optimising battery selection for UAV applications. By modelling load profiles, thermal behaviour, and voltage response, engineers can accurately predict how the TerraE 40P cell will perform under various conditions. For instance, simulating the thermal rise during high discharge scenarios allows for the identification of potential overheating issues, ensuring safe operation. Additionally, modelling usable energy helps in determining the effective capacity of the battery during different mission profiles. This approach not only aids in selecting the most suitable cell but also enhances overall UAV performance by ensuring that the chosen battery can meet the specific demands of the mission. By leveraging these simulations, manufacturers can avoid costly trial-and-error testing and confidently select the best cells for their UAV designs.
