Lishen 2170LH 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.
Explore the Lishen 2170LH cell for drones, designed for fast charging without overheating, ensuring safety and performance in demanding applications.
Value Propositions
Cylindrical 21700 form factor for efficient energy storage.
Nominal capacity of 10.8 Wh and 3.0 Ah for reliable performance.
Top-quartile volumetric power density of 6049 W/l for rapid energy delivery.
Gravimetric energy density of 152 Wh/kg, optimising weight for UAV applications.
Maximum continuous discharge of 45 A, supporting high-performance UAV operations.
About the Cell
The Lishen 2170LH cell features a cylindrical 21700 form factor, providing a nominal capacity of 10.8 Wh and 3.0 Ah. With a volumetric energy density of 403 Wh/l, it ranks around the median compared to other cells in the database. The gravimetric energy density stands at 152 Wh/kg, which is below the median, but the cell excels in power density, boasting a volumetric power density of 6049 W/l, placing it in the top-quartile compared to the database median of 2029 W/l. The maximum continuous charge rate is 30 A, which is above the median of 8 A, and the maximum continuous discharge rate is 45 A, significantly higher than the median of 30 A, making it suitable for demanding UAV applications. This combination of features makes the Lishen 2170LH a strong candidate for drone battery design, particularly in scenarios requiring rapid charging and discharging capabilities.
Application Challenges
In the context of drones, the challenge of fast charging batteries without overheating is critical. Rapid charging can lead to thermal issues, including lithium plating, which can degrade battery performance and safety. The Lishen 2170LH cell's specifications, including its maximum continuous charge of 30 A, allow for efficient charging while maintaining thermal stability. The cell's design must ensure that it can handle high currents without overheating, which is essential for UAV battery pack design. Effective battery thermal management is crucial to prevent overheating and ensure the longevity of the battery, especially in high-energy density drone batteries where weight and performance are paramount.
Why this Cell
The Lishen 2170LH cell is particularly well-suited for fast charging applications in drones due to its high maximum continuous discharge rate of 45 A, which is significantly above the median of 30 A in the database. This capability allows for quick energy delivery, essential for maintaining drone performance during demanding missions. Additionally, its volumetric power density of 6049 W/l positions it among the highest in the database, enabling rapid energy transfer without compromising safety. The cell's design also considers the need for lightweight drone battery packs, making it an ideal choice for UAV battery optimisation where every gram counts.
How Model-Based Design Helps
Simulation and model-based design play a crucial role in optimising the performance of the Lishen 2170LH cell in drone applications. By modelling load profiles and thermal behaviour, engineers can predict how the cell will perform under various conditions, including rapid charging scenarios. This predictive capability allows for the selection of the most suitable cells based on their thermal performance and energy output across the entire duty cycle. For instance, simulations can help identify the optimal charging rates that prevent overheating while maximising efficiency. This approach not only enhances the reliability of drone operations but also reduces the risk of battery failure during critical missions, ensuring that UAVs can operate effectively in demanding environments.
