COSMX 82D6J7 Weight v power trade off in pack design - how to pick the right balance.
Explore the COSMX 82D6J7 cell for UAV applications, balancing weight and power for optimal drone performance and endurance.
Value Propositions
Pouch form factor with a nominal capacity of 74.0 Wh and 20.0 Ah.
Volumetric energy density of 351 Wh/l, around median for high-performance cells.
Gravimetric energy density of 157 Wh/kg, providing a lightweight solution for UAVs.
Maximum continuous discharge of 400 A, top-quartile vs median of 30 A.
Volumetric power density of 7026 W/l, among the highest in the database.
About the Cell
The COSMX 82D6J7 cell features a pouch form factor with a nominal capacity of 74.0 Wh and 20.0 Ah, making it suitable for various UAV applications. With a volumetric energy density of 351 Wh/l, it is positioned around the median for high-performance cells, ensuring efficient space utilisation in battery packs. The gravimetric energy density of 157 Wh/kg offers a lightweight solution, crucial for drone applications where weight is a significant factor. Additionally, the cell boasts a maximum continuous discharge of 400 A, placing it in the top-quartile compared to the median of 30 A in the database. This capability allows for robust performance during demanding flight conditions. Furthermore, the volumetric power density of 7026 W/l is among the highest in the database, enabling quick energy delivery when required, which is essential for applications that demand high power output in short bursts.
Application Challenges
In the context of EVTOL and the weight vs 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 performance. The challenge lies in balancing these two factors effectively. High energy density is essential for long endurance drone batteries, while lightweight designs are necessary for optimal UAV performance. The COSMX 82D6J7 cell addresses these challenges with its impressive specifications, ensuring that UAVs can achieve their mission profiles without compromising on safety or efficiency. The need for lightweight drone battery packs is further underscored by the increasing demand for heavy-lift drone capabilities, which require careful consideration of both weight and power output.
Why this Cell
The COSMX 82D6J7 cell is an excellent choice for UAV applications due to its impressive metrics. With a maximum continuous discharge of 400 A, it is in the top-quartile compared to the median of 30 A, allowing for high discharge rates that are essential for demanding flight scenarios. The volumetric energy density of 351 Wh/l ensures that the cell can deliver substantial energy within a compact form factor, making it ideal for long endurance drone batteries. Additionally, the gravimetric energy density of 157 Wh/kg provides a lightweight solution, crucial for maintaining flight efficiency. This balance of power and weight is vital for UAVs, particularly in applications requiring extended flight times and high performance. The cell's specifications align perfectly with the needs of UAV battery optimisation, making it a prime candidate for custom UAV battery packs.
How Model-Based Design Helps
Simulation and model-based design play a crucial role in optimising the selection of battery cells for UAV applications. By modelling load profiles, thermal behaviour, and voltage response, engineers can predict how the COSMX 82D6J7 cell will perform under various conditions. This approach allows for accurate assessments of usable energy and thermal management, which are critical for preventing overheating and ensuring reliable operation. For instance, simulating the thermal rise during high discharge scenarios helps identify potential risks and enables the selection of cells that can withstand demanding conditions. Furthermore, modelling energy consumption across different flight profiles aids in determining the optimal balance between weight and power, ensuring that the selected battery cell meets the specific requirements of the mission. This data-driven approach reduces the reliance on trial-and-error testing, leading to more efficient and effective UAV battery designs.
