Ampace JP40 Fast charge of the batteries - how to charge the battery quickly without overheating the cells or causing lithium plating which could degrade the battery or cause it to catch fire.
Discover the Ampace JP40 cell for fast charging in EVTOL applications. Overcome overheating challenges with high energy density and performance.
Value Propositions
Cylindrical 21700 form factor for efficient design.
Nominal capacity of 14.8 Wh and 4.0 Ah for reliable energy delivery.
Volumetric energy density of 595 Wh/l, top-quartile vs median 542 Wh/l.
Gravimetric power density of 3,217 W/kg, among the highest in database.
Maximum continuous discharge of 60 A, top-quartile vs median 30 A.
About the Cell
The Ampace JP40 cell features a cylindrical 21700 form factor, optimised for high energy applications. With a nominal capacity of 14.8 Wh and 4.0 Ah, it delivers reliable energy for various UAV applications. Its volumetric energy density of 595 Wh/l places it in the top-quartile compared to the database median of 542 Wh/l, making it an excellent choice for long endurance drone batteries. Additionally, the gravimetric energy density of 214 Wh/kg is competitive, providing a lightweight solution for UAV battery pack design. The cell's volumetric power density of 8,930 W/l is among the highest in the database, ensuring it can handle demanding power requirements efficiently. Furthermore, the maximum continuous discharge rate of 60 A, which is top-quartile compared to the median of 30 A, allows for high discharge rates essential for UAV operations.
Application Challenges
In EVTOL applications, fast charging of batteries is critical to ensure operational efficiency. The challenge lies in charging the Ampace JP40 cell quickly without overheating or causing lithium plating, which can degrade battery performance and safety. The ability to manage thermal conditions during charging is essential to prevent overheating, which can lead to battery failure. Fast charging must be balanced with the need to maintain battery health, ensuring that the cell can withstand high charge currents without compromising its lifespan. The Ampace JP40's maximum continuous charge rate of 8 A (2 C) supports rapid charging while maintaining safety standards, making it suitable for demanding UAV applications.
Why this Cell
The Ampace JP40 cell is specifically designed for fast charging in EVTOL applications, with a maximum continuous charge rate of 8 A, which is well-suited for quick turnaround times. Its volumetric energy density of 595 Wh/l and gravimetric energy density of 214 Wh/kg ensure that it provides a lightweight and compact solution for UAV battery packs. The cell's high power density of 8,930 W/l allows it to deliver the necessary power during critical phases of flight, such as takeoff and ascent. Compared to the database median, the JP40's performance metrics position it as a top choice for UAV battery optimisation, ensuring that operators can achieve extended flight times without sacrificing safety or performance.
How Model-Based Design Helps
Simulation and model-based design play a crucial role in optimising the performance of the Ampace JP40 cell for EVTOL applications. By modelling load profiles, thermal behaviour, and voltage response, engineers can predict how the cell will perform under various conditions. This approach allows for the identification of optimal charging strategies that prevent overheating and ensure safe operation. For instance, simulations can help determine the best charge current to apply without exceeding thermal limits, thereby avoiding lithium plating. Additionally, by analysing the cell's energy output across different flight profiles, designers can ensure that the JP40 meets the energy demands of UAV missions while maintaining efficiency. This predictive capability reduces the risk of failure and enhances mission reliability, making it an invaluable tool in the design process.
