Enpower Greentech XNP0094J 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 Enpower Greentech XNP0094J cell, designed for fast charging in EVTOL applications, optimising performance while preventing overheating.
Value Propositions
Pouch form factor with a nominal capacity of 32.9 Wh and 9.4 Ah.
Volumetric energy density of 607 Wh/l, top-quartile vs median of 541 Wh/l.
Gravimetric energy density of 281 Wh/kg, around median vs 210 Wh/kg.
Maximum continuous discharge of 47 A, top-quartile vs median of 30 A.
Standard charge current of 4.7 A, significantly above the median of 2 A.
About the Cell
The Enpower Greentech XNP0094J cell is a pouch-type lithium-ion battery with a nominal capacity of 32.9 Wh (9.4 Ah). It boasts a volumetric energy density of 607 Wh/l, placing it in the top-quartile compared to the median of 541 Wh/l in the database. Its gravimetric energy density stands at 281 Wh/kg, which is around the median of 210 Wh/kg. The cell features a maximum continuous discharge of 47 A, which is also in the top-quartile compared to the median of 30 A. Additionally, the standard charge current of 4.7 A is significantly above the median of 2 A, making it suitable for fast charging applications in EVTOL systems.
Application Challenges
In the EVTOL sector, fast charging of batteries is critical to ensure operational efficiency and safety. The challenge lies in charging the battery quickly without overheating the cells or causing lithium plating, which can degrade the battery or lead to catastrophic failures. High discharge rates are essential for rapid deployment, but they must be balanced with thermal management to prevent overheating. The Enpower Greentech XNP0094J cell, with its high energy density and robust thermal performance, addresses these challenges effectively, ensuring that UAVs can maintain their operational readiness without compromising safety.
Why this Cell
The Enpower Greentech XNP0094J cell is ideal for EVTOL applications due to its impressive specifications. With a maximum continuous discharge of 47 A, it is in the top-quartile compared to the median of 30 A in the database, allowing for high power output during critical phases of flight. Its volumetric energy density of 607 Wh/l is also a significant advantage, providing more energy in a compact form factor. This cell's ability to handle a standard charge current of 4.7 A, which is well above the median of 2 A, ensures that it can be charged quickly without overheating, making it a reliable choice for fast charging scenarios.
How Model-Based Design Helps
Simulation and model-based design play a crucial role in optimising battery performance for EVTOL applications. By modelling load profiles, thermal rise, voltage sag, and usable energy, engineers can accurately predict how the Enpower Greentech XNP0094J cell will perform under various conditions. This allows for the selection of the most suitable cells for specific missions, ensuring that thermal management strategies are in place to prevent overheating. The ability to simulate different charging scenarios helps in understanding the limits of the cell, enabling designers to make informed decisions that enhance the safety and efficiency of UAV operations.
