Ampace JP40 Safety and risk management - particularly around overheating and thermal runaway during flight.
Discover the Ampace JP40 cell for UAV applications, designed for safety and risk management against overheating and thermal runaway during flight.
Value Propositions
Cylindrical 21700 form factor for efficient space utilisation.
Nominal capacity of 14.8 Wh and 4.0 Ah for reliable energy delivery.
Top-quartile volumetric energy density of 595 Wh/l for extended flight times.
Maximum continuous discharge of 60 A, ensuring high performance under load.
Gravimetric power density of 3,217 W/kg, ideal for rapid energy demands.
About the Cell
The Ampace JP40 is a cylindrical 21700 lithium-ion cell, boasting a nominal capacity of 14.8 Wh and 4.0 Ah. With a volumetric energy density of 595 Wh/l, it ranks in the top-quartile compared to the database median of 541.67 Wh/l, making it an excellent choice for applications requiring high energy density. The gravimetric energy density of 214.493 Wh/kg is also competitive, being around the median of 210 Wh/kg. The cell's volumetric power density of 8,930 W/l is among the highest in the database, significantly enhancing its performance in demanding UAV applications. Furthermore, the maximum continuous discharge rate of 60 A positions it well for high-drain scenarios, ensuring that it meets the rigorous demands of drone operations.
Application Challenges
In the context of EVTOL applications, safety and risk management are paramount, particularly regarding overheating and thermal runaway during flight. The Ampace JP40 cell's high energy density is crucial for extending flight times, which is essential for UAVs operating in various environments. Overheating can lead to catastrophic failures, making it vital to select cells that can handle high discharge rates while maintaining thermal stability. The JP40's specifications, including a maximum continuous discharge of 60 A, help mitigate these risks, ensuring that the cell can perform reliably under stress. Additionally, the ability to predict battery performance under varying conditions is critical for mission success, especially in extreme environments where temperature fluctuations can impact battery behaviour.
Why this Cell
The Ampace JP40 cell is specifically designed for UAV applications, addressing the critical challenges of safety and performance. With a maximum continuous discharge rate of 60 A, it is positioned in the top-quartile compared to the median of 30 A in the database, making it suitable for high-demand scenarios. Its volumetric energy density of 595 Wh/l not only supports long endurance but also ensures that the cell can deliver the necessary power without overheating. This is particularly important for EVTOL applications where thermal management is crucial. The JP40's lightweight design, combined with its high energy and power densities, allows for optimal battery pack design, ensuring that UAVs can achieve their mission profiles without compromising safety.
How Model-Based Design Helps
Simulation and model-based design play a vital role in optimising the performance of the Ampace JP40 cell in UAV applications. By simulating load profiles and thermal behaviour, engineers can predict how the cell will respond under various conditions, including high discharge scenarios that could lead to overheating. This predictive capability allows for the selection of the most suitable cells for specific missions, ensuring that the UAV can operate safely and efficiently. For instance, modelling the thermal rise during continuous discharge helps identify potential overheating issues before they occur, enabling proactive design adjustments. Furthermore, simulations can assess the impact of different flight profiles on battery performance, allowing for better mission planning and execution.
