Tenpower 25SG Safety and risk management - particularly around overheating and thermal runaway during flight.
Discover the Tenpower 25SG cell designed for safety in EVTOL applications, optimising performance while managing overheating risks.
Value Propositions
Cylindrical 18650 form factor for compact design.
Nominal capacity of 9.0 Wh and 2.5 Ah for reliable energy supply.
Top-quartile volumetric power density of 7,151 W/l for high performance.
Gravimetric energy density of 200 Wh/kg ensures lightweight solutions.
Maximum continuous discharge of 35 A supports demanding applications.
About the Cell
The Tenpower 25SG cell features a cylindrical 18650 form factor, providing a nominal capacity of 9.0 Wh and 2.5 Ah. With a volumetric energy density of 511 Wh/l, it stands out in the market, being around the median for volumetric energy density. The gravimetric energy density of 200 Wh/kg is competitive, ensuring lightweight battery solutions for UAVs. The cell boasts a volumetric power density of 7,151 W/l, placing it in the top-quartile compared to the database median of 2,029 W/l. Additionally, the maximum continuous discharge rate of 35 A positions it well for high-demand applications, significantly above the median of 30 A. This combination of features makes the 25SG an excellent choice for drone battery design and UAV battery pack design, particularly in safety-critical applications.
Application Challenges
In the EVTOL sector, safety and risk management are paramount, especially concerning overheating and thermal runaway during flight. The 25SG cell's specifications are crucial in addressing these challenges. With a maximum continuous discharge of 35 A, it can handle the high power demands of UAVs while maintaining thermal stability. The nominal capacity of 9.0 Wh ensures that drones can operate efficiently without compromising safety. As UAVs are often deployed in extreme environments, the ability to prevent battery overheating is essential. The high energy density of the 25SG cell allows for longer flight times, which is critical for mission success and reliability.
Why this Cell
The Tenpower 25SG cell is specifically designed to meet the rigorous demands of EVTOL applications. Its maximum continuous charge rate of 10 A (4.0 C) allows for rapid recharging, which is vital for operational efficiency. The cell's gravimetric energy density of 200 Wh/kg ensures that UAVs can achieve longer flight times without the burden of excessive weight. This is particularly important for applications requiring high energy density drone batteries. Furthermore, the top-quartile volumetric power density of 7,151 W/l enables the cell to deliver power efficiently, making it suitable for high discharge rate UAV batteries. This combination of features not only enhances performance but also contributes to improved safety by reducing the risk of thermal runaway.
How Model-Based Design Helps
Simulation and model-based design play a critical role in optimising the performance of the Tenpower 25SG cell for EVTOL applications. By modelling load profiles and thermal behaviour, engineers can predict how the cell will perform under various conditions. This includes assessing heat generation during high discharge scenarios, which is essential for preventing overheating. The ability to simulate voltage sag and usable energy allows for accurate predictions of battery performance throughout the flight envelope. This predictive capability enables designers to select the most suitable cells for their UAVs, ensuring that safety and efficiency are maximised. By avoiding costly trial-and-error testing, simulation helps in making informed decisions that enhance the overall reliability of drone operations.
