TerraE 20P 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 TerraE 20P cell for fast charging in EVTOL applications, addressing overheating and lithium plating challenges effectively.
Value Propositions
Cylindrical 18650 form factor for versatile applications.
Nominal capacity of 7.2 Wh and 2.0 Ah for efficient energy storage.
Top-quartile volumetric power density of 5,918 W/l for rapid energy delivery.
Gravimetric energy density of 160 Wh/kg, ensuring lightweight design.
Maximum continuous discharge of 30 A, supporting high-performance UAV operations.
About the Cell
The TerraE 20P cell features a cylindrical 18650 form factor, providing a nominal capacity of 7.2 Wh and 2.0 Ah. With a volumetric energy density of 395 Wh/l, it is designed for applications requiring efficient space utilisation. The cell's gravimetric energy density stands at 160 Wh/kg, making it suitable for lightweight drone battery packs. Additionally, it boasts a volumetric power density of 5,918 W/l, which is in the top-quartile compared to the database median of 2,029 W/l, ensuring rapid energy delivery during critical operations. The maximum continuous discharge rate of 30 A positions it as a robust choice for high energy demand scenarios, while the maximum continuous charge rate of 4 A allows for efficient recharging without compromising safety. This combination of features makes the TerraE 20P an ideal candidate for UAV battery optimisation and drone battery design.
Application Challenges
In the EVTOL sector, fast charging of batteries is crucial 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's performance or even lead to catastrophic failures. The TerraE 20P cell addresses these challenges with its high maximum continuous charge rate of 4 A, allowing for rapid recharging while maintaining thermal stability. The cell's design also mitigates risks associated with overheating, ensuring that UAVs can operate reliably in various environments. As drone technology advances, the need for lightweight, high energy density battery solutions becomes increasingly important, particularly for applications requiring long endurance and high discharge rates.
Why this Cell
The TerraE 20P cell is specifically engineered for fast charging in EVTOL applications, addressing the critical challenge of overheating during rapid energy delivery. With a maximum continuous discharge rate of 30 A, it is positioned in the top-quartile compared to the database median of 30 A, ensuring that it can handle high energy demands without compromising safety. The cell's volumetric power density of 5,918 W/l is among the highest in the database, providing the necessary power for demanding UAV operations. Furthermore, its lightweight design, with a gravimetric energy density of 160 Wh/kg, supports the development of lightweight drone battery packs, essential for enhancing flight time and overall mission efficiency.
How Model-Based Design Helps
Simulation and model-based design play a pivotal role in optimising the performance of the TerraE 20P cell for fast charging applications. By modelling load profiles, thermal rise, voltage sag, and usable energy, engineers can accurately predict how the cell will perform under various conditions. This approach allows for the identification of optimal charging strategies that prevent overheating and lithium plating, ensuring the longevity and reliability of the battery. For instance, simulations can help determine the best charge rates and thermal management strategies, enabling UAV manufacturers to select the most suitable cells for their specific applications. By leveraging cell-specific data, designers can enhance battery thermal management for drones, ultimately improving UAV mission endurance and operational efficiency.
