LG Chem HG2 Drones Weight v power trade off in pack design - how to pick the right balance.
Explore LG Chem's HG2 cell for drones, optimising weight and power for enhanced performance in UAV battery pack design.
Value Propositions
Cylindrical 18650 form factor for compact design.
Nominal capacity of 10.8 Wh and 3.0 Ah for reliable energy delivery.
Top-quartile volumetric energy density of 616 Wh/l for efficient space utilisation.
Gravimetric power density of 1500 W/kg, ideal for high discharge applications.
Maximum continuous discharge of 20 A supports demanding UAV operations.
About the Cell
The LG Chem HG2 cell features a cylindrical 18650 form factor, providing a nominal capacity of 10.8 Wh and 3.0 Ah. With a volumetric energy density of 616 Wh/l, it ranks in the top-quartile compared to the database median of 541.67 Wh/l, making it an excellent choice for drone applications where space is at a premium. The gravimetric energy density of 225 Wh/kg is also noteworthy, being around the median of 209.39 Wh/kg, ensuring that the cell delivers substantial energy without excessive weight. Additionally, the cell boasts a volumetric power density of 4107 W/l, which is among the highest in the database, facilitating high performance during rapid energy demands. The maximum continuous discharge rate of 20 A, equating to a C-rate of 6.7, allows for robust performance in high-drain scenarios, essential for UAV operations that require quick bursts of power.
Application Challenges
In the context of drone applications, the challenge of balancing weight and power is critical. Drones require lightweight battery solutions that do not compromise on energy output, especially for long endurance missions. The LG Chem HG2 cell addresses this challenge effectively, providing a high energy density that allows for extended flight times without adding unnecessary weight. The ability to optimise UAV battery pack design is crucial for various applications, including VTOL and heavy lift drones, where payload capacity and flight duration are paramount. Furthermore, ensuring that the battery can withstand extreme environments and high discharge rates is essential for mission success. The HG2 cell's specifications make it a strong candidate for addressing these challenges, ensuring that drone operators can achieve their operational goals efficiently.
Why this Cell
The LG Chem HG2 cell is particularly suited for drone applications due to its impressive specifications. With a nominal capacity of 10.8 Wh and a gravimetric energy density of 225 Wh/kg, it provides a reliable energy source while maintaining a lightweight profile. This is crucial for UAVs where every gram counts. The cell's volumetric energy density of 616 Wh/l positions it in the top-quartile compared to the median of 541.67 Wh/l, allowing for efficient use of space in battery pack design. Additionally, the maximum continuous discharge of 20 A ensures that the cell can handle the high power demands typical in drone operations, making it an optimal choice for UAV battery optimisation. The combination of these factors makes the HG2 cell a compelling option for those looking to enhance drone performance while managing weight effectively.
How Model-Based Design Helps
Simulation and model-based design play a pivotal role in optimising battery selection for drone applications. By simulating load profiles, thermal behaviour, and voltage response, engineers can accurately predict how the LG Chem HG2 cell will perform under various conditions. This approach allows for the assessment of energy delivery during critical phases of flight, such as take-off and rapid manoeuvres, ensuring that the selected cell meets the required performance criteria. Moreover, modelling thermal rise helps in understanding the cell's behaviour under high discharge rates, preventing overheating and ensuring safety during operation. By leveraging these simulations, designers can confidently select the HG2 cell, knowing it will deliver the necessary power while maintaining efficiency and reliability throughout the mission profile.
