Lishen 2170LH Safety and risk management - particularly around overheating and thermal runaway during flight.
Discover the Lishen 2170LH cell for UAV applications, optimised for safety and performance, ensuring reliable operation during critical missions.
Value Propositions
Cylindrical 21700 form factor for efficient design.
Nominal capacity of 10.8 Wh and 3.0 Ah for reliable energy delivery.
Top-quartile volumetric power density of 6049 W/l for high performance.
Gravimetric energy density of 152 Wh/kg, suitable for lightweight applications.
Maximum continuous discharge of 45 A ensures robust performance.
About the Cell
The Lishen 2170LH cell features a cylindrical 21700 form factor, optimised for UAV applications. With a nominal capacity of 10.8 Wh and 3.0 Ah, this cell delivers reliable energy for demanding missions. The volumetric energy density is 403 Wh/l, placing it in the top-quartile compared to the database median of 541.67 Wh/l, making it suitable for long endurance drone batteries. Additionally, the gravimetric energy density of 152 Wh/kg is competitive, ensuring lightweight drone battery packs. The cell also boasts a maximum continuous discharge of 45 A, which is significantly above the median of 30 A, providing the necessary power for high discharge rate UAV batteries. Furthermore, the volumetric power density of 6049 W/l is among the highest in the database, allowing for brisk current draws during critical operations.
Application Challenges
In the EVTOL sector, safety and risk management are paramount, particularly concerning overheating and thermal runaway during flight. The Lishen 2170LH cell is designed to address these challenges effectively. With a maximum continuous charge rate of 30 A, which is significantly higher than the median of 8 A, it ensures that the battery can handle rapid charging without compromising safety. The high energy density and robust discharge capabilities are crucial for maintaining performance in extreme environments, where temperature fluctuations can lead to battery failure. The ability to manage thermal conditions effectively is essential for preventing overheating, which can lead to catastrophic failures in UAV operations. Therefore, selecting the right cell is critical for ensuring mission success and safety in UAV applications.
Why this Cell
The Lishen 2170LH cell is an excellent choice for EVTOL applications due to its impressive specifications. With a maximum continuous discharge of 45 A, it is in the top-quartile compared to the median of 30 A, providing the necessary power for demanding UAV missions. The volumetric energy density of 403 Wh/l is also noteworthy, as it is above the median, allowing for longer flight times without increasing weight. This is particularly important for applications requiring long endurance, such as heavy lift drone operations. The cell's lightweight design, with a mass of only 71 g, further enhances its suitability for UAV battery pack design, ensuring that the overall weight remains manageable while maximising performance. Additionally, the high volumetric power density of 6049 W/l supports rapid energy delivery, essential for maintaining drone powertrain efficiency during critical phases of flight.
How Model-Based Design Helps
Simulation and model-based design play a crucial role in optimising the performance of the Lishen 2170LH cell for UAV applications. By modelling load profiles, thermal behaviour, and voltage response, engineers can accurately predict how the cell will perform under various conditions. This allows for the identification of potential overheating issues before they occur, ensuring that the battery operates within safe limits. For instance, simulating the thermal rise during high discharge scenarios can help in selecting the best thermal management strategies, preventing thermal runaway. Furthermore, using cell-specific data to model energy consumption across different flight profiles enables engineers to optimise battery weight versus flight time, ensuring that the UAV can achieve its mission objectives without compromising safety. This predictive capability is essential for enhancing UAV mission endurance and reliability, particularly in challenging environments.
