The challenges of batteries in military drones center on managing the environments in which they operate. These difficulties extend beyond coping with vibrations and extreme temperatures. Today’s small military drone operators also have to do their work under dangerous battlefield conditions.
Batteries in Drones Under Military Conditions
Most small military drones use lithium-ion batteries, because of their superior density and operating times. These batteries may be disposable in the case of single-use ‘kamikaze’ drones with explosive payloads.
Longer-life drones used for extended observation usually have rechargeable batteries. Charging them produces additional challenges in operational zones. They may need to be retrieved under battle conditions. Even recharging longer-life drones can put their operators at risk.
Automated battery management software must deal with thermal issues arising from climatic conditions, in addition to those operational work loads. However, that is not the end to the challenges of batteries in military drones. There is more to come.
Charging Drone Batteries Under Battlefield Conditions
Military drone operators are under constant threat of being spotted by enemy drones. They need suitable specialized charging stations that accommodate several drones simultaneously, as well as reliable power supplies.
The following power supplies may, or may not be available at the time. Many of these put drone operators at risk by making them easier to spot:
- Solar energy is freely available, although panels may quite easily be spotted by an observation drone flying past.
- Friendly vehicles, aircraft and even ships may be able to supply electricity from onboard, charged batteries.
- Portable fuel cells and standalone diesel generators may also be able to supply energy for charging drone batteries.
However, all of these options have trade-offs in terms of energy output, weight, portability, and potential to attract enemy attention. We had little idea of the challenges of batteries in military drones, until we investigated!
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