On-board redundant power system for unmanned aerial vehicles
First Claim
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1. An unmanned aerial vehicle (UAV) comprising:
- one or more propeller motors configured to rotate one or more propellers of the UAV; and
a power system comprising;
a battery to provide power to the one or more propeller motors;
a combustion engine configured to convert potential energy of a fuel stored on-board the UAV into kinetic energy, the combustion engine mechanically isolated from the one or more propellers of the UAV;
a generator coupled to the combustion engine to convert the kinetic energy from the combustion engine into electrical energy;
a battery monitor to monitor a charge level of the battery; and
a power system controller configured to selectively operate the combustion engine to provide the electrical energy from the generator to charge the battery or to power at least one of the one or more propeller motors and to operate the combustion engine based at least in part on determining that the charge level of the battery is less than a threshold level.
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Abstract
An unmanned aerial vehicle (“UAV”) is configured with a redundant power generation system on-board the UAV. A redundant power system on-board the UAV can selectively utilize an auxiliary power source during operation and/or flight of the UAV. The power system on-board the UAV may include a battery and at least one auxiliary power source comprising a combustion engine. The combustion engine on-board the UAV may be selectively operated to charge the battery when a charge level of the battery is below a full charge level, and/or to power one or more propeller motors of the UAV.
16 Citations
19 Claims
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1. An unmanned aerial vehicle (UAV) comprising:
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one or more propeller motors configured to rotate one or more propellers of the UAV; and a power system comprising; a battery to provide power to the one or more propeller motors; a combustion engine configured to convert potential energy of a fuel stored on-board the UAV into kinetic energy, the combustion engine mechanically isolated from the one or more propellers of the UAV; a generator coupled to the combustion engine to convert the kinetic energy from the combustion engine into electrical energy; a battery monitor to monitor a charge level of the battery; and a power system controller configured to selectively operate the combustion engine to provide the electrical energy from the generator to charge the battery or to power at least one of the one or more propeller motors and to operate the combustion engine based at least in part on determining that the charge level of the battery is less than a threshold level. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method to operate a power system of an unmanned aerial vehicle (UAV), the method comprising:
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providing power to one or more propeller motors of the UAV from a battery on-board the UAV; determining, by a power system controller of the UAV, that a trigger event has occurred; and based at least in part on the determining that the trigger event has occurred, operating a combustion engine on-board the UAV to charge the battery or power at least one propeller motor of the UAV, the combustion engine mechanically isolated from the one or more propellers of the UAV. - View Dependent Claims (13, 14, 15)
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16. An unmanned aerial vehicle (UAV) comprising:
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one or more propeller motors configured to rotate one or more propellers of the UAV; and a power system controller configured to; determine that the UAV is below a threshold altitude, based at least in part on determining that the UAV is below the threshold altitude, provide power to the one or more propeller motors of the UAV from a battery on-board the UAV; determine that the UAV is above the threshold altitude; and based at least in part on determining that the UAV is above the threshold altitude, operate a combustion engine on-board the UAV to charge the battery or power at least one of the one or more propeller motors of the UAV, the combustion engine mechanically isolated from the one or more propellers of the UAV. - View Dependent Claims (17, 18, 19)
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Specification