Systems and methods for UAV battery power backup

Patent metadata

Field	Value
Publication number	US-9434267-B2
Application number	US-201514800487-A
Country	US
Kind code	B2
Filing date	Jul 15, 2015
Priority date	Aug 8, 2014
Publication date	Sep 6, 2016
Grant date	Sep 6, 2016

Abstract

Systems and methods are provided for swapping the battery on an unmanned aerial vehicle (UAV) while providing continuous power to at least one system on the UAV. The UAV may be able to identify and land on an energy provision station autonomously. The UAV may take off and/or land on the energy provision station. The UAV may communicate with the energy provision station. The energy provision station may store and charge batteries for use on a UAV. The UAV and/or the energy provision station may have a backup energy source to provide continuous power to the UAV.

First claim

What is claimed is:

1. A UAV comprising: a propulsion unit configured to effect movement of the UAV; and a power unit onboard the UAV comprising:
a first battery that powers (1) the propulsion unit and (2) a power consuming unit of the UAV; and
a second battery that powers the power consuming unit of the UAV, wherein the power unit switches between (a) a first mode wherein the first battery is providing power to (1) the propulsion unit and (2) the power consuming unit and (b) a second mode wherein the second battery is providing power to the power consuming unit, and not providing power to the propulsion unit.

2. The UAV of claim 1 , wherein the propulsion unit includes one or more rotors configured to generate lift for the UAV.

3. The UAV of claim 1 , wherein the power consuming unit is one or more of the following: a global positioning system (GPS) sensor, motion sensor, inertial measurement unit sensor, proximity sensor, and/or image sensor.

4. The UAV of claim 1 , wherein the first battery does not provide power during the second mode.

5. The UAV of claim 1 , wherein the first battery is detachable from the UAV during the second mode.

6. The UAV of claim 1 , wherein the power unit is switched to the second mode when the UAV is resting on a surface.

7. The UAV of claim 6 , wherein the power unit is configured to be switched from the first mode to the second mode prior to or as the first battery is removed from the UAV, and continuous power is provided to the power consuming unit.

8. The UAV of claim 7 , when the power unit is configured to be switched from the second mode to the first mode when the first battery is coupled to the UAV and prepared to provide power.

9. The UAV of claim 1 , wherein the power unit is configured to switch between the first and second mode when the voltage of the first battery falls beneath the voltage of the second battery.

10. The UAV of claim 9 , wherein the power unit comprises a unidirectional diode that has a positive end facing the second battery and a negative end facing the power consuming unit.

11. The UAV of claim 10 , wherein the power unit comprises another unidirectional diode that has a positive end facing the first battery and a negative end facing the power consuming unit.

12. The UAV of claim 9 , wherein the power unit comprises an electrical switch that is in an open position during the first mode and in a closed position during the second mode.

13. The UAV of claim 1 , wherein the first battery is electrically connected to the second battery during the first mode.

14. The UAV of claim 13 , wherein the second battery is configured to provide lower voltage power than the first battery.

15. A method of providing energy to a UAV, said method comprising:
powering (1) a propulsion unit, and (2) a power consuming unit of the UAV with an onboard first battery when the UAV is in a first mode;
powering the power consuming unit of the UAV with a second battery onboard of the UAV without powering the propulsion unit with the second battery when the UAV is in a second mode, wherein the first battery is not providing power to the UAV when the UAV is in the second mode.

16. The method of claim 15 , wherein the propulsion unit includes one or more rotors configured to generate lift for the UAV.

17. The method of claim 15 , wherein the UAV is resting on a surface when no longer powering (1) the propulsion unit, and (2) the power consuming unit of the UAV with the first battery.

18. The method of claim 17 , wherein the UAV is in flight when powering (1) the propulsion unit, and (2) the power consuming unit of the UAV with the first battery.

19. The method of claim 15 , further comprising charging the second battery while powering (1) the propulsion unit, and (2) the power consuming unit of the UAV with the first battery.

20. The method of claim 19 , further comprising charging the second battery with the first battery while the UAV is in flight.

21. The method of claim 15 , wherein the power unit comprises a unidirectional diode that has a positive end facing the second battery and a negative end facing the power consuming.

22. The method of claim 15 , wherein the second battery is configured to provide lower voltage than the first battery.

23. A method of providing energy to a UAV, said method comprising:
powering (1) a propulsion unit, and (2) a power consuming unit of the UAV with a first battery onboard the UAV;
charging a second battery onboard of the UAV with the first battery;
powering the power consuming unit of the UAV with the second battery alone; and
stop powering, by the first battery, (1) the propulsion unit, and (2) the power consuming unit of the UAV.

24. The method of claim 23 , wherein the propulsion unit includes one or more rotors configured to generate lift for the UAV.

25. The method of claim 23 , wherein the UAV is resting on a surface when no longer powering (1) the propulsion unit, and (2) the power consuming unit of the UAV with the first battery.

26. The method of claim 25 , wherein the UAV is in flight when powering (1) the propulsion unit, and (2) the power consuming unit of the UAV with the first battery.

27. The method of claim 23 , further comprising charging the second battery while powering (1) the propulsion unit, and (2) the power consuming unit of the UAV with the first battery.

28. The method of claim 27 , further comprising charging the second battery with the first battery while the UAV is in flight.

29. The method of claim 23 , wherein the power unit comprises a unidirectional diode that has a positive end facing the second battery and a negative end facing the power consuming unit, and wherein the power unit comprises another unidirectional diode that has a positive end facing the first battery and a negative end facing the power consuming unit.

30. The method of claim 23 , wherein the second battery is configured to provide lower voltage than the first battery.

Assignees

• Sz Dji Technology Co Ltd

Inventors

• Wang Mingxi
• Qiu Hualiang
• Wang Mingyu

Classifications

• Y02T10/7072

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• Y02T90/16

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• B64F1/007

  Helicopter portable landing pads · CPC title

• B64U30/20

  Rotors; Rotor supports · CPC title

• B64U70/30

  for capturing UAVs in flight by ground or sea-based arresting gear, e.g. by a cable or a net · CPC title