TerraE 32P 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 32P cell, designed for fast charging in EVTOL applications, ensuring safety and efficiency without overheating or lithium plating.
Value Propositions
Cylindrical 18650 form factor for compact design.
Nominal capacity of 11.1 Wh and 3.0 Ah for reliable performance.
Top-quartile volumetric power density of 6,296 W/l for rapid energy delivery.
Gravimetric energy density of 231.25 Wh/kg for lightweight applications.
Maximum continuous discharge of 30 A for high-demand scenarios.
About the Cell
The TerraE 32P cell features a cylindrical 18650 form factor, optimised for fast charging applications in EVTOL systems. With a nominal capacity of 11.1 Wh and 3.0 Ah, it provides reliable energy storage for demanding UAV operations. The cell boasts a volumetric energy density of 630 Wh/l, which is significantly above the database median of 542 Wh/l, making it suitable for high energy density drone batteries. Additionally, its gravimetric energy density of 231.25 Wh/kg positions it well within the top-quartile of the market, ensuring lightweight drone battery packs that do not compromise on performance. The cell's volumetric power density of 6,296 W/l is among the highest in the database, facilitating rapid energy delivery essential for fast charging without overheating. Furthermore, the maximum continuous discharge rate of 30 A allows for high discharge rate UAV batteries, ensuring that the cell can meet the demands of various flight profiles.
Application Challenges
In the context of EVTOL applications, the challenge of fast charging the batteries is paramount. Rapid charging must be achieved without overheating the cells or causing lithium plating, which can degrade battery performance and pose safety risks. The TerraE 32P cell addresses these challenges by providing a high maximum continuous charge rate of 6 A, which is significantly above the database median of 2 A. This capability allows for efficient charging cycles while maintaining thermal stability. The design also considers the need for effective battery thermal management for drones, ensuring that the cell operates within safe temperature limits during high current draws. The lightweight design of the 32P cell contributes to improved UAV mission endurance, allowing for longer flight times and greater payload capacities.
Why this Cell
The TerraE 32P cell is specifically engineered for fast charging in EVTOL applications, making it an ideal choice for drone battery design. With a maximum continuous charge rate of 6 A, it exceeds the median of 2 A in the database, enabling quicker turnaround times for battery charging. The cell's high volumetric energy density of 630 Wh/l ensures that it can store significant energy in a compact form, which is crucial for UAV battery pack design. Additionally, the gravimetric power density of 2,312.5 W/kg allows for efficient energy delivery during high-demand scenarios, making it suitable for applications requiring high discharge rates. This combination of features ensures that the TerraE 32P cell can effectively meet the challenges of fast charging while maintaining safety and performance.
How Model-Based Design Helps
Simulation and model-based design play a critical role in optimising the performance of the TerraE 32P cell for fast charging applications. By modelling load profiles and thermal behaviour, engineers can predict how the cell will respond under various charging conditions. This includes assessing heat generation during rapid charging and ensuring that the internal temperature remains within safe limits. Additionally, simulations can help in understanding voltage sag and usable energy across different discharge rates, enabling accurate predictions of battery performance in real-world scenarios. By employing these advanced modelling techniques, designers can confidently select the TerraE 32P cell for UAV applications, ensuring that it meets the rigorous demands of fast charging without compromising safety or efficiency.
