Reliance RS50 Safety and risk management - particularly around overheating and thermal runaway during flight.
Discover the Reliance RS50 cell for UAVs, designed for safety and risk management, ensuring optimal performance and reliability during flight.
Value Propositions
Cylindrical 21700 form factor for compact design.
Nominal capacity of 18.0 Wh and 5.0 Ah for reliable energy output.
Top-quartile volumetric energy density of 715 Wh/l for efficient space usage.
Maximum continuous discharge of 70.0 A, ensuring high performance under load.
Gravimetric power density of 3761 W/kg, ideal for demanding UAV applications.
About the Cell
The Reliance RS50 cell features a cylindrical 21700 form factor, optimised for UAV applications. With a nominal capacity of 18.0 Wh and 5.0 Ah, it provides reliable energy output for various drone operations. The cell boasts a volumetric energy density of 715 Wh/l, placing it in the top-quartile compared to the database median of 542 Wh/l, which allows for efficient use of space in battery packs. Additionally, its maximum continuous discharge rate of 70.0 A ensures that it can handle high power demands, making it suitable for applications requiring rapid energy release. The gravimetric power density of 3761 W/kg is also impressive, significantly above the database median of 750 W/kg, providing excellent performance for high-energy applications. This combination of features makes the RS50 a strong candidate for UAV battery pack design.
Application Challenges
In the context of EVTOL and safety and risk management, particularly around overheating and thermal runaway during flight, the Reliance RS50 cell addresses critical challenges. UAVs often operate in demanding environments where thermal management is paramount. The high energy density of 715 Wh/l allows for longer flight times, which is essential for missions that require extended operational periods. However, with increased energy comes the risk of overheating, especially during high discharge scenarios. The RS50's design mitigates these risks through its robust thermal management capabilities, ensuring that the cell remains within safe operating temperatures even under maximum continuous discharge conditions. This is crucial for maintaining reliability and safety during flight, as overheating can lead to thermal runaway, posing significant risks to both the UAV and its mission.
Why this Cell
The Reliance RS50 cell is specifically designed to meet the rigorous demands of UAV applications, particularly in terms of safety and performance. With a maximum continuous discharge rate of 70.0 A, it is positioned in the top-quartile compared to the database median of 30 A, allowing for high discharge rates that are essential for dynamic flight operations. The cell's volumetric energy density of 715 Wh/l not only supports long endurance but also ensures that the UAV can carry additional payload without compromising flight time. Furthermore, the gravimetric energy density of 268.657 Wh/kg is significantly above the database median of 210 Wh/kg, providing a lightweight solution that enhances overall UAV efficiency. These metrics make the RS50 an ideal choice for applications where both performance and safety are critical, particularly in preventing overheating and ensuring reliable operation during demanding missions.
How Model-Based Design Helps
Simulation and model-based design play a crucial role in optimising the performance of the Reliance RS50 cell for UAV applications. By simulating 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 accurate modelling of heat generation and voltage response, ensuring that the cell operates within safe limits. For instance, simulations can identify potential overheating scenarios, enabling designers to implement effective thermal management strategies. Additionally, by modelling usable energy and voltage sag, engineers can select the most suitable cells for specific missions, ensuring that UAVs can achieve their operational goals without risking mid-air failures. This approach not only enhances safety but also improves overall mission reliability, making it a vital component of modern UAV battery design.
