Systems and methods for UAV battery power backup

• US 10,611,252 B2
• Filed: 08/05/2016
• Issued: 04/07/2020
• Est. Priority Date: 08/08/2014
• Status: Active Grant

• Current Assignee: SZ DJI Technology Co., Ltd. (d/b/a DJI) (iFlight Technology Company Limited)
• Original Assignee: SZ DJI Technology Co., Ltd. (d/b/a DJI) (iFlight Technology Company Limited)
• Inventors: Wang, Mingxi, Qiu, Hualiang, Wang, Mingyu
• Primary Examiner(s): O'Hara, Brian M
• Assistant Examiner(s): Dixon, Keith L
• Application Number:
  US15/230,294
• Publication Number:
  US 20160339789A1
• Time in Patent Office: 1,341 Days
• Field of Search: 244135 A
• CPC Class Codes: B60L 53/80 Exchanging energy storage elements, e.g. removable batteries
• CPC Class Codes: B64C 39/024 of the remote controlled vehicle type, i.e. RPV
• CPC Class Codes: B64D 27/24 using steam or spring force jet aircraft B64D27/16
• CPC Class Codes: B64D 35/02 specially adapted for specific power plants
• CPC Class Codes: B64F 1/007 Helicopter portable landing pads
• CPC Class Codes: B64U 10/13 Flying platforms
• CPC Class Codes: B64U 10/14 with four distinct rotor axes, e.g. quadcopters
• CPC Class Codes: B64U 30/20 Rotors; Rotor supports
• CPC Class Codes: B64U 50/19 using electrically powered motors
• CPC Class Codes: B64U 50/34 In-flight charging photovoltaics B64U50/31
• CPC Class Codes: B64U 50/39 Battery swapping
• CPC Class Codes: B64U 70/30 for capturing UAVs in flight by ground or sea-based arresting gear, e.g. by a cable or a net
• CPC Class Codes: B64U 70/95 Means for guiding the landing UAV towards the platform, e.g. lighting means
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 90/12 Electric charging stations
• CPC Class Codes: Y02T 90/14 Plug-in electric vehicles
• CPC Class Codes: Y02T 90/16 Information or communication technologies improving the operation of electric vehicles

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.

Claims

1. An unmanned aerial vehicle (UAV) energy provision station comprising:

a) a landing area that supports a UAV when the UAV is landed at the station, wherein the UAV is operably coupled to (1) a first battery that provides power to the UAV and (2) a backup power source that provides power to the UAV when the first battery is decoupled from the UAV, wherein the backup power source is another battery onboard the UAV; and

b) a battery replacement member that decouples the first battery from the UAV such that the first battery no longer provides power to said UAV, and wherein the backup power source provides power to the UAV prior to or concurrent with said decoupling, thereby allowing the UAV to remain powered before, during, and after the first battery is decoupled from the UAV.

2. The UAV energy provision station of claim 1, wherein the backup power source further comprises a renewable energy generation power source onboard the UAV.

3. The UAV energy provision station of claim 1, further comprising:

a movable battery storage unit comprising a plurality of holding stations configured to collectively store a plurality of batteries each capable of powering the UAV upon being operably coupled to the UAV, wherein the movable battery storage unit is configured to permit simultaneous movement of the plurality of holding stations relative to the landing area.

4. A method of providing continuous power to an unmanned aerial vehicle (UAV), said method comprising:

a) providing power to the UAV via a battery when the battery is operably coupled to the UAV;

b) assessing, with aid of one or more processors individually or collectively, a reliability of a first backup energy source and a second backup energy source that provide power to the UAV prior to or concurrent with decoupling of said battery from the UAV;

c) selecting, with aid of the one or more processors individually or collectively, the first backup energy source or the second backup energy source based on the assessed reliability; and

d) providing power to the UAV via the selected first or second backup energy source prior to or concurrent with the decoupling of said battery from the UAV.

5. The method of claim 4, wherein the first backup energy source is another battery onboard the UAV.

6. The method of claim 5, wherein the reliability of the first backup energy source is assessed based on a state of charge of the another battery onboard the UAV.

7. The method of claim 6, wherein the first backup energy source is assessed to have low reliability when the another battery has a low state of charge.

8. The method of claim 4, wherein the second backup energy source is a power unit onboard an UAV energy provision station that supports the UAV while the UAV is not in flight.

9. The method of claim 7, wherein the reliability of the second backup energy source is assessed based on a consistency of power provided by the power unit over a period of time.

10. The method of claim 9, wherein the second backup energy source is assessed to have low reliability when the power provided by the power unit over the period of time has low consistency.

11. The method of claim 4, further comprising:

(1) selecting the first backup energy source to power the UAV when the first backup energy source is assessed to have a higher reliability than the second backup energy source, and (2) selecting the second backup energy source to power the UAV when the second backup energy source is assessed to have a higher reliability than the first backup energy source.

12. The method of claim 4, further comprising:

selecting the first backup energy source to power the UAV when (1) the first backup energy source is a default source of backup power, and (2) when the first backup energy source'"'"'s assessed reliability does not fall beneath a predetermined threshold.

13. The method of claim 4, further comprising:

selecting the second backup energy source when (1) the second backup energy source is a default source of backup power, and (2) the second backup energy source'"'"'s assessed reliability does not fall beneath a predetermined threshold.

14. The method of claim 4, further comprising:

supporting the UAV on a landing area of an UAV energy provision station.

15. The method of claim 14, further comprising:

decoupling the battery from the UAV using a battery replacement member that is part of the UAV energy provision station; and

providing power to the UAV using the selected first backup energy source or the second backup energy source when the battery is being decoupled from the UAV or after the battery is decoupled from the UAV.