CN206820542U - A kind of electric supply installation and apply its unmanned plane - Google Patents

A kind of electric supply installation and apply its unmanned plane Download PDF

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Publication number
CN206820542U
CN206820542U CN201720779401.0U CN201720779401U CN206820542U CN 206820542 U CN206820542 U CN 206820542U CN 201720779401 U CN201720779401 U CN 201720779401U CN 206820542 U CN206820542 U CN 206820542U
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China
Prior art keywords
equipment
stand
power source
main power
power supply
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Active
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CN201720779401.0U
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Chinese (zh)
Inventor
陈廷忠
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SZ DJI Technology Co Ltd
Shenzhen Dajiang Innovations Technology Co Ltd
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Shenzhen Dajiang Innovations Technology Co Ltd
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Priority to CN201720779401.0U priority Critical patent/CN206820542U/en
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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20End-user application control systems

Abstract

A kind of electric supply installation, for being powered for unmanned plane, unmanned plane includes body equipment and is installed on the carry equipment of body equipment;Electric supply installation includes:Main power source, for being powered to body equipment and carry equipment;Stand-by power supply, for during main power source is changed, being powered to carry equipment;Energy supply control module, one end connection main power source and stand-by power supply, other end connection body equipment and carry equipment, for controlling the power supply state of main power source and stand-by power supply.The utility model is realized by the cooperation of main power source and stand-by power supply and the seamless switching formula of carry equipment is powered, and substantially increases the operating efficiency of unmanned plane.

Description

A kind of electric supply installation and apply its unmanned plane
Technical field
It the utility model is related to unmanned air vehicle technique field, more particularly to a kind of electric supply installation and apply its unmanned plane.
Background technology
Existing unmanned plane is most of to be only equipped with a main battery, and all devices of unmanned plane can break after main battery power-off Electricity, it is required to re-power startup to these equipment after electricity on unmanned plane again.But changed when unmanned machine operation battery compared with To be frequent, the device powers down of unmanned plane can be caused when changing battery.And many equipment on unmanned plane, especially carry equipment, all With system program, these equipment are from re-powering need of work longer period of time, it is therefore desirable to which waiting facilities has started Into, just can normal work, so greatly reduce the operating efficiency of unmanned plane, influence the continuity of unmanned plane work.
Utility model content
The utility model provides a kind of electric supply installation, and for being powered for unmanned plane, the unmanned plane includes body equipment And it is installed on the carry equipment of the body equipment;The electric supply installation includes:Main power source, for the body equipment and extension Carry equipment power supply;Stand-by power supply, for during the main power source is changed, being powered to the carry equipment;Energy supply control module, One end connects the main power source and stand-by power supply, and the other end connects the body equipment and carry equipment, for controlling the master The power supply state of power supply and stand-by power supply.
In certain embodiments, the energy supply control module includes:First control module, for main power voltage to be transmitted To the body equipment, and main power voltage is reduced to first voltage and transmitted to the carry equipment;Second control module, is used for During the main power source is changed, backup power source voltage is reduced to second voltage and transmitted to the carry equipment.
In certain embodiments, first control module includes:
Branch road is connected, the main power source and body equipment are connected, for main power voltage to be transmitted to the body equipment; One-way conduction part, its one end connect the main power source, and the other end connects the carry equipment, for main power voltage to be reduced to First voltage is transmitted to the carry equipment.
In certain embodiments, second control module includes:One-way conduction part, its one end connect the standby electricity Source, the other end connect the carry equipment, transmitted for backup power source voltage to be reduced into second voltage to the carry equipment.
In certain embodiments, the one-way conduction part is diode.
In certain embodiments, in addition to:Charging device, connects the main power source and stand-by power supply, and the main power source leads to It is crossed to charge to the stand-by power supply.
In certain embodiments, the charging device includes:Power input interface, for receiving the voltage of the main power source Or electric current;Power conversion unit, changed for the voltage to the main power source or electric current;Power output interface, for inciting somebody to action Voltage or electric current after conversion are exported to the stand-by power supply.
In certain embodiments, the carry equipment includes camera, video camera, surveying instrument, loudspeaker, sound pick-up at least It is a kind of.
In certain embodiments, the main power source includes the first battery, and the stand-by power supply includes the second battery;Described The capacity and/or volume of two batteries are less than the first battery.
In certain embodiments, switch is connected between the one-way conduction part and the stand-by power supply, for will be standby Electric supply installation and stand-by power supply is disconnected from the electric supply installation described in plant-grid connection.
The utility model additionally provides a kind of unmanned plane, including:Body equipment;The carry for being installed on the body equipment is set It is standby;The electric supply installation of any one as described above, for being powered for the body equipment and carry equipment.
Electric supply installation of the present utility model includes main power source and stand-by power supply, and stand-by power supply can continue when changing main power source Powered for carry equipment, the seamless switching formula of carry equipment is powered by main power source and stand-by power supply, nothing can be greatly improved Man-machine operating efficiency.Because carry equipment does not power off during main power source is changed, the running parameter of carry equipment will not Lost because changing main power source, ensure that the continuity of carry device data, be favorably improved the power-off endurance of unmanned plane, Some continuitys that are particularly suitable for use in require higher operation.Low capacity stand-by power supply will not increase without big installing space The overall volume and weight of unmanned plane, be advantageous to the miniaturization of unmanned plane with it is lightening.
Brief description of the drawings
Fig. 1 is the unmanned plane structural representation of the embodiment of the utility model one;
Fig. 2 is the electric supply installation structural representation of another embodiment of the utility model;
Fig. 3 is the electric supply installation structural representation of another embodiment of the utility model;
Fig. 4 is the electric supply installation structural representation of another embodiment of the utility model.
Embodiment
For the purpose of this utility model, technical scheme and advantage is more clearly understood, below in conjunction with specific embodiment, and Referring to the drawings, the utility model is further described.Obviously, described embodiment is only one of the present utility model Divide embodiment, rather than whole embodiments.Based on embodiment of the present utility model, those skilled in the art are not making The every other embodiment obtained under the premise of creative work, belongs to the scope of protection of the utility model.
Unless otherwise defined, all technologies used herein and scientific terminology are generally understood that with those skilled in the art Implication is identical.Term used in the description is intended merely to describe specific embodiment herein, it is not intended that in limiting this practicality It is new.
The unmanned plane of the embodiment of the utility model one, as shown in figure 1, including unmanned plane body and carry equipment, unmanned plane Body includes electric supply installation and body equipment, and electric supply installation is used to power for body equipment and carry equipment.
Electric supply installation includes main power source, stand-by power supply and energy supply control module.Wherein main power source is electrically connected with power supply control The first input end of molding block, stand-by power supply are electrically connected with the second input of energy supply control module, and the of energy supply control module One output end is electrically connected with body equipment, and its second output end is electrically connected with carry equipment.
Electric supply installation in the present embodiment, main power source are replaceable power supply, energy supply control module be used to controlling main power source and The power supply state of stand-by power supply.
Under normal operation, main power source is powered by energy supply control module to body equipment and carry equipment.Power supply control Molding block first input end receives the output voltage of main power source, is transferred to body equipment and carry equipment.The output of stand-by power supply Although voltage also accesses energy supply control module, under the control of energy supply control module, it does not set to body equipment and carry Available electricity.
When main power source not enough power supply, it is necessary to more change owner when it can not meet body equipment and/or carry equipment normal work Power supply.After old master's power supply is removed, then stand-by power supply is powered by energy supply control module for carry equipment.Energy supply control module Two inputs receive the output voltage of stand-by power supply, are transferred to and give carry equipment.After new main power source is installed, electric supply installation is extensive Multiple normal operation, main power source are powered by continuing energy supply control module for body equipment and carry equipment.
In the present embodiment, unmanned plane can be various unmanned flight's equipment such as unmanned vehicle, unmanned aerial photography device.
Unmanned plane body includes but is not limited to the various machines such as power set, flight control assemblies, sensing device, communicator Upper equipment, these airborne equipments at least form the body equipment of part.
The bottom of unmanned plane typically also includes carry platform, for installing fixed one or more carry equipment.Carry Platform is preferably head, and carry equipment includes but is not limited to the equipment such as camera, video camera, surveying instrument, loudspeaker, sound pick-up.
Main power source, stand-by power supply can use various types of power supplys, such as battery core, and it is various that battery core, which is such as, but not limited to, The battery of type, such as lithium battery.
Electric supply installation in the present embodiment, while including main power source and stand-by power supply, when changing during main power source, due to standby Carry equipment can be continued as with power supply to power so that carry equipment can work on, and will not power off.When main power source has been changed Bi Hou, only body equipment re-power startup, and carry equipment is continued to power by main power source, therefore carry equipment is in more change owner electricity Startup need not be re-powered during source, it is not necessary to wait start completion.By main power source and stand-by power supply to carry equipment The power supply of seamless switching formula, the operating efficiency of unmanned plane can be greatly improved.Secondly as carry equipment is changing main power source During do not power off so that the running parameter of carry equipment will not be lost because changing main power source, ensure that carry device data Continuity, be favorably improved the power-off endurance of unmanned plane, some continuitys that are particularly suitable for use in require higher operation.
In the present embodiment, powered during being to change main power source due to the effect of stand-by power supply for carry equipment, other In the case of by main power source be that carry equipment and body equipment are powered, typically will not be very long the time required to changing main power source, therefore Compared to main power source, stand-by power supply is preferably power supply with small capacity or small size power supply, and power supply with small capacity generally has less body Product.I.e. in the present embodiment, the capacity of stand-by power supply and/or volume are less than the capacity and volume of main power source, but to reserve battery Capacity and the concrete numerical value of volume do not limit, those skilled in the art can be configured according to specific demand, example Such as it is contemplated that the species of carry equipment, quantity, it is suitable standby to change the selection of the factors such as frequency and the required time of main power source Power supply.From low capacity and/or small size stand-by power supply without big installing space, will not increase unmanned plane overall volume and Weight, be advantageous to the miniaturization of unmanned plane with it is lightening.
The unmanned plane of another embodiment of the utility model, it is any in above-described embodiment in order to reach the purpose of brief description The technical characteristic that same application can be made is described all and in this, without repeating identical narration.
As shown in Fig. 2 energy supply control module includes the first control module and the second control module, the first control module it is defeated Enter end and be electrically connected with main power source, its first output end is electrically connected with body equipment, and the input of the second control module is electrically connected with Stand-by power supply, electrically connect with carry equipment after the output end connection of the second output end and the second control module of the first control module Connect.
First control module input receives the output voltage VCC1 of main power source, and the tunnels of output voltage VCC1 mono- are transmitted to this Body equipment to be powered to body equipment, after being voltage VCC2 transmit to carry equipment by another way pressure drop.Second control module has One-way conduction characteristic, only input can turn on to extreme direction is exported, and reversely block.The output voltage of the present embodiment stand-by power supply VCC3 is less than the output voltage VCC1 of main power source and transmitted to the voltage VCC2 of carry equipment.Due to the list of the second control module To on state characteristic, now the second control module is blocked, and the voltage VCC2 that carry equipment is exported by the first control module powers, and electricity Pressure VCC2 will not impact to stand-by power supply.
When changing main power source, main power source is removed, and main power source output voltage VCC1 is zero, and the first control module second is defeated Go out end no longer output voltage, now, the output voltage VCC3 of stand-by power supply turns on the second control module, output voltage VCC3 Transmitted after the second control module pressure drop to carry equipment to be powered to carry equipment.The output voltage of the present embodiment stand-by power supply VCC3 should be able to meet to continue the voltage request powered to carry equipment, but output voltage VCC3 concrete numerical value is not limited Fixed, those skilled in the art can be configured according to specific demand, such as the type and quantity of carry equipment.With the second control Molding block is identical, and the first control module also has one-way conduction characteristic, and only input to the second output extreme direction can turn on, instead To blocking.The first control module is reversely blocked after main power source is removed, will not be to main electricity during the main power source more renewed Source and other circuit elements impact.
The unmanned plane of another embodiment of the utility model, it is any in above-described embodiment in order to reach the purpose of brief description The technical characteristic that same application can be made is described all and in this, without repeating identical narration.
In the present embodiment, as shown in figure 3, main battery BT1 is main power source, reserve battery BT2 is stand-by power supply.First control Molding block includes a connection branch road and an one-way conduction branch road, the connection branch road are directly connected to main battery BT1 and body equipment, should One-way conduction branch road includes diode D1, its one end connection main battery BT1, other end connection carry equipment.Second control module Also include an one-way conduction circuit, the one-way conduction circuit include diode D2 and switch S1, reserve battery BT2 through switch S1, Diode D2 connection carry equipment, a diode D2 termination switch S1, the other end and diode D1 connection carry equipment One end connects and is connected to carry equipment.In the present embodiment, diode D1 connection main batterys BT1 one end is its positive pole, even The one end for connecing carry equipment is negative pole, and diode D2 connecting valves S1 one end is its positive pole, and one end of connection carry equipment is Negative pole.
The electric supply installation of the present embodiment, after main battery BT1, reserve battery BT2 are installed and switch S1 closures, main battery BT1 VCC1 points of output voltage is two-way, is directly transferred to body equipment all the way to be powered to body equipment.Diode D1 is led Logical, another way output voltage VCC1 produces pressure drop, diode D1 output voltages VCC2 to carry equipment after diode D1.By In meeting VCC1 > VCC2 > VCC3, now diode D2 is reversely blocked, and diode D1 output voltages VCC2 supplies to carry equipment Electricity, and voltage VCC2 will not impact to reserve battery BT2.
When changing main power source, main battery BT1 is removed, and its output voltage VCC1 is zero, and diode D1 no longer exports electricity Pressure, now, diode D2 conductings, reserve battery BT2 output voltage VCC3 produce pressure drop after diode D2, and diode D2 is defeated Go out voltage VCC2 to carry equipment.Due to meeting VCC3 > VCC2 > VCC1, now diode D1 is reversely blocked, and diode D2 is defeated Go out voltage VCC2 to power to carry equipment.
S1 is wherein switched as apolegamy part, preferably single-pole single-throw switch (SPST).When close a switch S1 when, reserve battery BT2 Electric supply installation is introduced as stand-by power supply.In other examples, switch S1 can not also be included, diode D2 one end is directly connected to Reserve battery BT2, as long as installing reserve battery BT2, it just works as stand-by power supply.
The unmanned plane of another embodiment of the utility model, it is any in above-described embodiment in order to reach the purpose of brief description The technical characteristic that same application can be made is described all and in this, without repeating identical narration.
As shown in figure 4, being also associated with charger between main power source BT1 and switch S1, stand-by power supply BT2 is chargeable electricity Pond.When close a switch S1 after, main power source BT1 to body equipment and carry equipment power while, also by charger to standby Power supply BT2 charges.During due to unmanned machine operation the replacing of main power source be more frequently, stand-by power supply need be relatively frequently Carry equipment is powered, but the finite capacity of stand-by power supply in itself, and the electricity of stand-by power supply is easy to exhaust in this case, can not Ensure the work continuity of carry equipment, the operating efficiency of unmanned plane will be influenceed.Pass through the charger of the present embodiment so that every time After being powered for carry equipment, the electric power that stand-by power supply can obtain main power source by charger charges for oneself, is not in electricity Situation about exhausting, can constantly for carry equipment power, further ensure carry equipment work continuity and nobody The operating efficiency of machine.
In the present embodiment, charger can select charging chip or charging circuit, but its concrete structure is not limited, Those skilled in the art can choose according to specific demand.In one example, charger can include power input interface, Power conversion unit, power output interface and controller.Power input interface receives the voltage or electric current of main power source, and power supply turns Change unit under the control of the controller to change the voltage or electric current of main power source, the voltage or electric current after conversion are defeated by power supply Outgoing interface is exported to stand-by power supply.In another example, charger also includes communication interface, and controller is obtained by communication interface The charge information of stand-by power supply is taken, and power conversion unit is controlled according to charge information, adjusts the output electricity of power conversion unit Pressure or electric current, to be safely that stand-by power supply charges.
So far, the present embodiment is described in detail combined accompanying drawing.According to above description, those skilled in the art There should be clear understanding to the utility model.
It should be noted that in accompanying drawing or specification text, the implementation that does not illustrate or describe is affiliated technology Form known to a person of ordinary skill in the art, is not described in detail in field.In addition, above-mentioned definition to each element and not only limiting The various concrete structures mentioned in embodiment, shape, those of ordinary skill in the art simply can be changed or replaced to it Change.
Particular embodiments described above, the purpose of this utility model, technical scheme and beneficial effect are carried out to enter one Step describes in detail, should be understood that and the foregoing is only specific embodiment of the utility model, is not limited to this Utility model, it is all within the spirit and principles of the utility model, any modification, equivalent substitution and improvements done etc., it all should wrap It is contained within the scope of protection of the utility model.

Claims (11)

1. a kind of electric supply installation, for being powered for unmanned plane, the unmanned plane includes body equipment and is installed on the body setting Standby carry equipment;
The electric supply installation includes:
Main power source, for being powered to the body equipment and carry equipment;
Stand-by power supply, for during the main power source is changed, being powered to the carry equipment;
Energy supply control module, one end connect the main power source and stand-by power supply, and the other end connects the body equipment and carry is set It is standby, for controlling the power supply state of the main power source and stand-by power supply.
2. electric supply installation as claimed in claim 1, the energy supply control module includes:
First control module, the first electricity is reduced to for main power voltage to be transmitted to the body equipment, and by main power voltage Pressure is transmitted to the carry equipment;
Second control module, for during the main power source being changed, backup power source voltage being reduced into second voltage and transmitted to institute State carry equipment.
3. electric supply installation as claimed in claim 2, first control module includes:
Branch road is connected, the main power source and body equipment are connected, for main power voltage to be transmitted to the body equipment;
One-way conduction part, its one end connect the main power source, and the other end connects the carry equipment, for by main power voltage First voltage is reduced to transmit to the carry equipment.
4. electric supply installation as claimed in claim 2, second control module includes:
One-way conduction part, its one end connect the stand-by power supply, and the other end connects the carry equipment, for by stand-by power supply Voltage is reduced to second voltage and transmitted to the carry equipment.
5. the electric supply installation as described in claim 3 or 4, the one-way conduction part is diode.
6. electric supply installation as claimed in claim 1, in addition to:Charging device, the main power source and stand-by power supply are connected, it is described Main power source is charged by it to the stand-by power supply.
7. electric supply installation as claimed in claim 6, the charging device includes:
Power input interface, for receiving the voltage or electric current of the main power source;
Power conversion unit, changed for the voltage to the main power source or electric current;
Power output interface, for the voltage after conversion or electric current to be exported to the stand-by power supply.
8. electric supply installation as claimed in claim 1, the carry equipment includes camera, video camera, surveying instrument, loudspeaker, picked up At least one of sound device.
9. electric supply installation as claimed in claim 1, the main power source includes the first battery, and the stand-by power supply includes the second electricity Pond;The capacity and/or volume of second battery are less than the first battery.
10. electric supply installation as claimed in claim 4, it is connected with out between the one-way conduction part and the stand-by power supply Close, for stand-by power supply to be accessed into the electric supply installation and disconnects stand-by power supply from the electric supply installation.
11. a kind of unmanned plane, including:
Body equipment;
It is installed on the carry equipment of the body equipment;
Electric supply installation as described in any one of claim 1 to 10, for being powered for the body equipment and carry equipment.
CN201720779401.0U 2017-06-29 2017-06-29 A kind of electric supply installation and apply its unmanned plane Active CN206820542U (en)

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CN201720779401.0U CN206820542U (en) 2017-06-29 2017-06-29 A kind of electric supply installation and apply its unmanned plane
CN201780068858.3A CN109923754A (en) 2017-06-29 2017-08-02 A kind of power supply unit and the unmanned plane using it
PCT/CN2017/095656 WO2019000555A1 (en) 2017-06-29 2017-08-02 Power supply apparatus and unmanned aerial vehicle using same

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WO2019000555A1 (en) * 2017-06-29 2019-01-03 深圳市大疆创新科技有限公司 Power supply apparatus and unmanned aerial vehicle using same
CN110165775A (en) * 2019-06-06 2019-08-23 东莞仲天电子科技有限公司 A kind of miniature multi-power supply system
WO2019183927A1 (en) * 2018-03-30 2019-10-03 深圳市大疆创新科技有限公司 Multi-battery power supply control method, device and unmanned aerial vehicle (uav)
CN110959241A (en) * 2018-10-30 2020-04-03 深圳市大疆创新科技有限公司 Control method of unmanned aerial vehicle, unmanned aerial vehicle and machine-readable storage medium

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CN102738890B (en) * 2012-06-18 2014-12-03 浙江大学 Power supply system of remote sensing platform of unmanned plane
KR101522544B1 (en) * 2013-10-25 2015-05-26 한국항공우주연구원 Power supply system with active power management device
CN104803002A (en) * 2014-01-23 2015-07-29 桂林鑫鹰电子科技有限公司 Unmanned aerial vehicle redundant power supply device
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CN206820542U (en) * 2017-06-29 2017-12-29 深圳市大疆创新科技有限公司 A kind of electric supply installation and apply its unmanned plane

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019000555A1 (en) * 2017-06-29 2019-01-03 深圳市大疆创新科技有限公司 Power supply apparatus and unmanned aerial vehicle using same
WO2019183927A1 (en) * 2018-03-30 2019-10-03 深圳市大疆创新科技有限公司 Multi-battery power supply control method, device and unmanned aerial vehicle (uav)
CN110959241A (en) * 2018-10-30 2020-04-03 深圳市大疆创新科技有限公司 Control method of unmanned aerial vehicle, unmanned aerial vehicle and machine-readable storage medium
WO2020087309A1 (en) * 2018-10-30 2020-05-07 深圳市大疆创新科技有限公司 Control method for unmanned aerial vehicle, unmanned aerial vehicle, and machine readable storage medium
CN110165775A (en) * 2019-06-06 2019-08-23 东莞仲天电子科技有限公司 A kind of miniature multi-power supply system

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