Ampace 21700A Safety and risk management - particularly around overheating and thermal runaway during flight.
Discover the Ampace 21700A cell for UAV applications, designed for safety and risk management, ensuring reliable performance during critical missions.
Value Propositions
Cylindrical 21700 form factor with a nominal capacity of 14.8 Wh and 4.0 Ah.
Volumetric energy density of 589 Wh/l, placing it in the top-quartile vs median of 541.67 Wh/l.
Gravimetric energy density of 211 Wh/kg, around median compared to 210 Wh/kg.
Maximum continuous discharge of 45 A, top-quartile vs median of 30 A.
Standard charge current of 2 A, aligning with the median of 2 A.
About the Cell
The Ampace 21700A cell is a cylindrical lithium-ion battery designed specifically for UAV applications. With a nominal capacity of 14.8 Wh and 4.0 Ah, it offers a robust solution for various drone operations. The cell boasts a volumetric energy density of 589 Wh/l, which is in the top-quartile compared to the median of 541.67 Wh/l in the database. Additionally, its gravimetric energy density of 211 Wh/kg is around the median, providing a balanced performance for weight-sensitive applications. The maximum continuous discharge rate of 45 A places it in the top-quartile, ensuring that it can handle high power demands during critical flight operations. Furthermore, the standard charge current of 2 A aligns with the median, making it suitable for efficient charging cycles.
Application Challenges
In the context of EVTOL and safety and risk management, particularly around overheating and thermal runaway during flight, the Ampace 21700A cell addresses several critical challenges. Drones operating in demanding environments require batteries that can withstand high discharge rates without compromising safety. The risk of thermal runaway is a significant concern, especially during prolonged use or under heavy loads. The 21700A's maximum continuous discharge of 45 A ensures that it can deliver the necessary power while maintaining thermal stability. Additionally, the high energy density allows for longer flight times, which is essential for missions that require extended operational periods. The ability to manage heat generation effectively is crucial for preventing overheating, making this cell an ideal choice for UAV applications.
Why this Cell
The Ampace 21700A cell is particularly suited for EVTOL applications due to its impressive specifications. With a volumetric energy density of 589 Wh/l, it ranks in the top-quartile compared to the median of 541.67 Wh/l, allowing for compact battery designs that do not sacrifice performance. The maximum continuous discharge rate of 45 A is also noteworthy, as it is significantly higher than the median of 30 A, providing the necessary power for demanding flight profiles. This capability is essential for safety and risk management, especially in scenarios where overheating could lead to catastrophic failures. The cell's design also supports efficient thermal management, making it a reliable choice for UAV manufacturers focused on safety.
How Model-Based Design Helps
Simulation and model-based design play a crucial role in optimising the performance of the Ampace 21700A cell for UAV applications. By modelling load profiles and thermal behaviour, engineers can predict how the cell will perform under various conditions, including high discharge rates and extreme temperatures. This predictive capability allows for the selection of the most suitable cells for specific missions, ensuring that the drones can operate safely and effectively. For instance, simulations can identify potential overheating issues before they occur, enabling proactive measures to be taken. Furthermore, by analysing voltage sag and usable energy, designers can optimise battery pack configurations to maximise flight time and mission success rates. This approach not only enhances safety but also improves overall operational efficiency.
