BAK 45D Drones Maximise flight time - optimise the cell selection, duty cycle and flight speed to maximise flight time.
Explore the BAK 45D cell for drones, designed to maximise flight time with high energy density and optimal performance under demanding conditions.
Value Propositions
Cylindrical 21700 form factor for compact designs.
Nominal capacity of 15.84 Wh and 4.4 Ah for extended use.
Top-quartile volumetric energy density of 619 Wh/l.
Maximum continuous discharge of 60 A for high power demands.
Gravimetric power density of 3130 W/kg for efficient energy use.
About the Cell
The BAK 45D cell is a cylindrical 21700 lithium-ion battery designed specifically for drone applications. With a nominal capacity of 15.84 Wh and 4.4 Ah, it provides a reliable power source for various UAV missions. Its volumetric energy density of 619 Wh/l positions it in the top-quartile compared to the database median of 541.67 Wh/l, ensuring that drones can carry more energy without increasing weight. The gravimetric energy density of 229.57 Wh/kg is also competitive, offering a lightweight solution for drone battery packs. The cell's maximum continuous discharge rate of 60 A allows it to meet high power demands, making it suitable for dynamic flight profiles. Additionally, the volumetric power density of 8447.4 W/l is among the highest in the database, enabling rapid energy delivery when needed. Overall, the BAK 45D is engineered for optimal performance in demanding drone applications.
Application Challenges
In the context of drones, maximising flight time is critical for operational efficiency and mission success. The BAK 45D cell addresses this challenge by providing high energy density and robust performance under various conditions. Drones often operate in environments where weight and power efficiency are paramount. The ability to optimise cell selection, duty cycle, and flight speed directly impacts the duration of missions. For instance, a lightweight battery pack can significantly extend flight time, allowing drones to cover larger areas or complete more complex tasks without the need for frequent recharging. Furthermore, the high discharge rates of the BAK 45D ensure that drones can perform demanding maneuvers without risking battery failure, which is essential for applications such as industrial inspections or emergency response missions.
Why this Cell
The BAK 45D cell is particularly suited for drone applications due to its impressive specifications. With a nominal capacity of 15.84 Wh, it meets the energy demands of long endurance missions. The maximum continuous discharge rate of 60 A positions it in the top-quartile compared to the median of 30 A in the database, allowing for high-performance applications. Its volumetric energy density of 619 Wh/l is significantly above the median, ensuring that drones can carry more energy without compromising on weight. This is crucial for UAVs that require lightweight designs to maximise flight time. The BAK 45D's high gravimetric power density of 3130 W/kg also supports efficient energy use during flight, making it an ideal choice for custom UAV battery packs.
How Model-Based Design Helps
Simulation and model-based design play a vital role in optimising drone battery performance. By simulating load profiles, thermal behaviour, and voltage response, engineers can accurately predict how the BAK 45D cell will perform under various conditions. This modelling allows for the assessment of energy usage across different flight speeds and duty cycles, ensuring that the selected battery can meet the specific needs of the mission. For example, understanding the thermal rise during high discharge scenarios helps prevent overheating, which is a common challenge in drone applications. Additionally, simulations can provide insights into the usable energy available throughout the flight, enabling better planning and execution of missions. This predictive capability is essential for ensuring reliability and efficiency in drone operations.
