Unmanned aerial vehicle base station system and method

• US 10,369,975 B2
• Filed: 01/24/2017
• Issued: 08/06/2019
• Est. Priority Date: 07/31/2014
• 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, Lin, Yuan, Li, Hongju
• Primary Examiner(s): Chen, Shelley
• Application Number:
  US15/414,101
• Publication Number:
  US 20170129464A1
• Time in Patent Office: 924 Days
• Field of Search: None
• 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: 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 50/39 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 70/90 Launching from or landing on platforms
• CPC Class Codes: B64U 80/70 in containers B64U80/60 takes precedence
• CPC Class Codes: H02J 7/0045 concerning the insertion or the connection of the batteries
• 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

Abstract

A unmanned aerial vehicle (UAV) base station for automated battery pack exchange and methods for manufacturing and using the same. The UAV base station includes a battery-exchange system disposed within a housing having a top-plate. The housing contains a battery array having a plurality of UAV battery packs and a mechanical mechanism for automatically removing an expended battery pack from a UAV that lands on the top-plate and replacing the expended battery pack with a charged battery pack. Thereby, the UAV base station system advantageously enables extended and autonomous operation of the UAV without the need for user intervention for exchanging UAV battery packs.

Claims

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

a landing surface for enabling a UAV having a UAV battery pack to land on the landing surface;

a battery-exchange system comprising;

a battery-matrix comprising a plurality of battery-slots, each configured to removably hold a UAV battery pack; and

a mechanical mechanism configured to move along at least two axes to interact with a selected UAV battery pack of the battery-exchange system and the UAV battery pack of the UAV;

wherein the battery-exchange system is disposed within a housing cavity defined by a housing that at least comprises a top-plate configured for the UAV to land on the top-plate, the top-plate comprising;

a hatch, the mechanical mechanism being operable to extend a battery pack through the hatch from within the housing cavity to a battery-swapping position above the top-plate; and

at least one hatch-door operable to cover the hatch when the mechanical mechanism is not extended through the hatch; and

a UAV fixation system operable to direct the UAV present on the top-plate to a battery-exchange zone of the top-plate.

2. The unmanned aerial vehicle base station of claim 1, wherein the mechanical mechanism is configured to:

move along an X-axis and Y-axis to the selected UAV battery pack disposed in a selected battery-slot;

extend a battery-carriage along a Z-axis and grasp the selected UAV battery pack;

retract the battery carriage along the Z-axis to remove the selected UAV battery pack from the battery-slot; and

move the selected UAV battery pack proximate to the UAV and insert the selected UAV battery pack into a UAV battery-slot disposed on the UAV and decouple from the selected UAV battery pack.

3. The unmanned aerial vehicle base station of claim 1, wherein the plurality of battery-slots are arranged in a two-dimensional array having a plurality of rows and columns.

4. The unmanned aerial vehicle base station of claim 1, wherein the housing further comprises a top-plate cover configured to removably cover the top-plate.

5. The unmanned aerial vehicle base station of claim 4, wherein the housing further comprises a draw bar and wheels.

6. The unmanned aerial vehicle se station of claim 1, wherein the UAV fixation system comprises a first fixation arm and second fixation arm configured to respectively translate along respective perpendicular axes, wherein the UAV fixation system is configured to operate automatically without user interaction.

7. The unmanned aerial vehicle base station of claim 6, wherein the first and second fixation arms extend substantially perpendicularly to their respective translation axes.

8. The unmanned aerial vehicle base station of claim 6, wherein the first and second fixation arms are actuated by respective fixation-arm-actuation systems disposed within the housing cavity.

9. The unmanned aerial vehicle base station of claim 1, wherein the mechanical mechanism is further configured to:

move proximate to the UAV having the UAV battery pack disposed in a UAV battery-slot of UAV;

grasp the UAV battery pack disposed in the UAV battery-slot;

retractably remove the UAV battery pack from the UAV battery-slot;

move along a X-axis and Y-axis to a selected UAV battery-slot; and

extend a battery-carriage along a Z-axis to insert the UAV battery pack in the selected UAV battery-slot.

10. The unmanned aerial vehicle base station of claim 1, wherein the mechanical mechanism system comprises a base-cart configured to translate linearly along an X-axis on at least one base-rail.

11. The unmanned aerial vehicle base station of claim 10, wherein the mechanical mechanism system comprises:

an elevator-carriage configured to translate linearly along a Y-axis on at least one elevator-rail that extends from the base-cart; and

a battery-carriage coupled with the elevator-carriage.