Murata VTC5D 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.
Discover the Murata VTC5D cell, designed for fast charging in EVTOL applications while preventing overheating and lithium plating issues. Learn more.
Value Propositions
Cylindrical 18650 form factor for versatile applications.
Nominal capacity of 10.08 Wh and 2.8 Ah for reliable energy delivery.
Top-quartile volumetric power density of 7,184 W/l for rapid energy transfer.
Gravimetric energy density of 215 Wh/kg, ensuring lightweight designs.
Maximum continuous discharge of 35 A, ideal for high-demand UAV applications.
About the Cell
The Murata VTC5D is a cylindrical 18650 lithium-ion cell with a nominal capacity of 10.08 Wh and 2.8 Ah. It features a volumetric energy density of 575 Wh/l, which is significantly above the database median of 542 Wh/l, making it suitable for applications requiring high energy density. The gravimetric energy density of 215 Wh/kg is also competitive, being around the median of 210 Wh/kg. With a maximum continuous discharge of 35 A, this cell is positioned in the top-quartile compared to the database median of 30 A, allowing for robust performance in demanding scenarios. The cell's volumetric power density of 7,184 W/l is among the highest in the database, supporting rapid energy transfer essential for fast charging applications.
Application Challenges
In EVTOL applications, fast charging of batteries is critical to ensure operational efficiency. The challenge lies in charging the battery quickly without overheating the cells or causing lithium plating, which can degrade the battery or lead to safety hazards. The Murata VTC5D's high energy density and robust discharge capabilities make it a suitable choice for addressing these challenges. Effective thermal management is essential to prevent overheating, and the VTC5D's design supports this by allowing for higher charge rates while maintaining safety standards. The ability to deliver high power density ensures that UAVs can achieve quick turnaround times, which is vital for mission-critical operations.
Why this Cell
The Murata VTC5D cell stands out in EVTOL applications due to its impressive specifications. With a maximum continuous charge rate of 6.0 A, it allows for rapid charging without compromising safety, as it is well above the median of 2 A in the database. The cell's volumetric power density of 7,184 W/l is among the highest, enabling quick energy transfer during fast charging. Additionally, the gravimetric energy density of 215 Wh/kg ensures that the cell remains lightweight, which is crucial for UAV performance. This combination of high energy and power densities makes the VTC5D an excellent choice for applications requiring both efficiency and reliability.
How Model-Based Design Helps
Simulation and model-based design play a vital role in optimising the performance of the Murata VTC5D cell for EVTOL 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 identification of potential overheating issues before they occur, ensuring that the cell operates within safe limits. Additionally, simulations can help in understanding voltage sag and usable energy, which are critical for accurate battery management and mission planning. By leveraging these insights, designers can confidently select the VTC5D cell, knowing it meets the rigorous demands of fast-charging UAV applications.
