Enpower Greentech 21700-4.5Ah Drones 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 21700-4.5Ah cell for drones, designed for fast charging without overheating, ensuring safety and efficiency in UAV applications.
Value Propositions
Cylindrical 21700 form factor for compact UAV designs.
Nominal capacity of 15.84 Wh, ideal for high energy demands.
Volumetric energy density of 619 Wh/l, among the highest in the database.
Maximum continuous discharge of 60 A, top-quartile vs median 30 A.
Gravimetric power density of 3130 W/kg, +64% vs database median of 750 W/kg.
About the Cell
The Enpower Greentech 21700-4.5Ah cell is designed specifically for drone applications, featuring a cylindrical form factor that allows for efficient space utilisation within UAVs. With a nominal capacity of 15.84 Wh and a nominal current of 4.4 Ah, this cell is tailored for high energy demands typical in drone operations. Its volumetric energy density of 619 Wh/l places it among the highest in the database, making it an excellent choice for applications requiring compact and lightweight battery solutions. Additionally, the cell boasts a maximum continuous discharge rate of 60 A, which is in the top-quartile compared to the median of 30 A in the market, ensuring that it can handle the high power requirements of demanding UAV missions. The gravimetric power density of 3130 W/kg is also impressive, exceeding the median by 64%, providing the necessary power for rapid acceleration and high-performance flight scenarios. Overall, this cell is engineered to meet the rigorous demands of modern drone technology, ensuring reliability and efficiency in various applications.
Application Challenges
In the realm of drones, the challenge of fast charging batteries is paramount. The need to charge quickly without overheating the cells or causing lithium plating is critical to maintaining battery integrity and safety. Overheating can lead to thermal runaway, which poses significant risks, including fire hazards. Additionally, lithium plating can degrade the battery's performance and lifespan, making it essential to select cells that can handle high charge rates while managing thermal conditions effectively. The Enpower Greentech 21700-4.5Ah cell addresses these challenges with its robust design and high discharge capabilities, ensuring that UAVs can operate efficiently even under demanding conditions. The ability to charge rapidly while maintaining safety standards is crucial for applications such as long endurance drone batteries, VTOL drone battery pack design, and heavy lift drone batteries, where mission success often hinges on battery performance.
Why this Cell
The Enpower Greentech 21700-4.5Ah cell is specifically designed to meet the challenges of fast charging in drone applications. With a maximum continuous charge rate of 13.2 A, this cell is positioned in the top-quartile compared to the median of 8 A in the market, allowing for efficient charging without compromising safety. Its volumetric energy density of 619 Wh/l ensures that drones can carry more energy in a compact form, which is essential for extending flight times and improving mission endurance. Furthermore, the cell's high gravimetric power density of 3130 W/kg allows for rapid discharge, making it suitable for applications requiring high power outputs, such as UAV battery optimization and drone powertrain efficiency. By choosing the Enpower Greentech 21700-4.5Ah cell, designers can ensure that their UAVs are equipped with batteries that not only meet but exceed the performance requirements for fast charging and safe operation.
How Model-Based Design Helps
Simulation and model-based design play a crucial role in optimising battery performance for drone applications. By simulating load profiles, thermal rise, and voltage sag, engineers can predict how the Enpower Greentech 21700-4.5Ah cell will behave under various operational conditions. This predictive capability allows for the selection of the most suitable cells for specific missions, ensuring that the UAV can deliver the required thrust and energy without risking battery failure. For instance, modelling can help identify the optimal charging protocols that prevent overheating while maximising charge rates. Additionally, simulations can assess the impact of different flight profiles on battery performance, enabling designers to fine-tune their UAV systems for maximum efficiency. This approach not only enhances the reliability of drone operations but also reduces the need for costly trial-and-error testing, ultimately leading to safer and more efficient UAV designs.
