CN112849417A - Unmanned aerial vehicle airborne power source and unmanned aerial vehicle system - Google Patents
Unmanned aerial vehicle airborne power source and unmanned aerial vehicle system Download PDFInfo
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- CN112849417A CN112849417A CN202110169992.0A CN202110169992A CN112849417A CN 112849417 A CN112849417 A CN 112849417A CN 202110169992 A CN202110169992 A CN 202110169992A CN 112849417 A CN112849417 A CN 112849417A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D27/00—Arrangement or mounting of power plants in aircraft; Aircraft characterised by the type or position of power plants
- B64D27/02—Aircraft characterised by the type or position of power plants
- B64D27/24—Aircraft characterised by the type or position of power plants using steam or spring force
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0025—Sequential battery discharge in systems with a plurality of batteries
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit 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
- H02J9/06—Circuit 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
- H02J9/061—Circuit 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 for DC powered loads
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/60—Efficient propulsion technologies, e.g. for aircraft
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- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Aviation & Aerospace Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses an unmanned aerial vehicle airborne power supply and an unmanned aerial vehicle system, wherein the unmanned aerial vehicle airborne power supply comprises a mooring power supply and a standby power supply; the mooring power supply converts electric energy output by the power supply box of the unmanned aerial vehicle into power supply voltage and outputs the power supply voltage to the power utilization load of the unmanned aerial vehicle; the standby power supply outputs standby power supply voltage to the power load of the unmanned aerial vehicle; the voltage value of the power supply voltage is larger than that of the standby power supply voltage, mutual backup of the mooring power supply and the standby power supply is achieved, when any one power supply is powered off, the other power supply can be immediately continued, the unmanned aerial vehicle is prevented from falling down due to the fact that power sources are lost, therefore, on the premise that a control circuit is not added, priority power supply of the mooring power supply is achieved, and the safety and the cruising ability of the unmanned aerial vehicle are improved.
Description
Technical Field
The invention relates to the technical field of electronic power, in particular to an unmanned aerial vehicle airborne power supply and an unmanned aerial vehicle system.
Background
In order to guarantee that unmanned aerial vehicle is light nimble and can long-time operation, the main power of unmanned aerial vehicle operation is supplied power for unmanned aerial vehicle through the power supply mooring line by the unmanned aerial vehicle power supply box, utilizes the advantage that unmanned aerial vehicle power supply box electric quantity is sufficient, realizes that unmanned aerial vehicle lasts the operation for a long time.
However, after the unmanned aerial vehicle flies to the high altitude, the power box of the unmanned aerial vehicle is damaged, or the power supply mooring line is disconnected and other factors cause the unmanned aerial vehicle to crash into the airplane due to sudden power failure, so that safety accidents are caused.
Disclosure of Invention
The invention mainly aims to provide an airborne power supply of an unmanned aerial vehicle, and aims to solve the problem that the unmanned aerial vehicle suddenly breaks down after a power box of the unmanned aerial vehicle breaks down.
In order to achieve the above object, the present invention provides an airborne power supply for an unmanned aerial vehicle, wherein the unmanned aerial vehicle comprises an electrical load for the unmanned aerial vehicle, and the airborne power supply for the unmanned aerial vehicle comprises:
the input end of the mooring power supply is connected with the power box of the unmanned aerial vehicle, and the mooring power supply converts electric energy output by the power box of the unmanned aerial vehicle into power supply voltage and outputs the power supply voltage to the power load of the unmanned aerial vehicle;
the output end of the standby power supply is connected with the electric load of the unmanned aerial vehicle, and the standby power supply is used for outputting standby power supply voltage to the electric load of the unmanned aerial vehicle; wherein,
the magnitude of voltage of power supply voltage is greater than the magnitude of voltage of stand-by power supply voltage to the messenger be in the mooring power source with stand-by power supply inserts simultaneously extremely during the unmanned aerial vehicle power consumption load, mooring power source gives preferentially the unmanned aerial vehicle power consumption load supplies power.
Optionally, the drone onboard power supply further comprises:
the detection end of the power supply voltage detection circuit is connected with the output end of the mooring power supply, and the power supply voltage detection circuit is used for detecting the power supply voltage and outputting corresponding power supply detection voltage;
the detection end of the standby power supply voltage detection circuit is connected with the output end of the standby power supply, and the standby power supply voltage detection circuit is used for detecting the standby power supply voltage and outputting corresponding standby power supply detection voltage;
the main control circuit, main control circuit's input respectively with power supply voltage detection circuit's output and stand-by power supply voltage detection circuit's output is connected, main control circuit is used for confirming when arbitrary one in power supply voltage's the voltage value with stand-by power supply voltage's the voltage value is less than first predetermined voltage value, control unmanned aerial vehicle power consumption load stop work.
Optionally, the master control circuit includes:
the input end of the first electronic switch is connected with the output end of the mooring power supply and the output end of the standby power supply at the same time, and the output end of the first electronic switch is connected with the power load of the unmanned aerial vehicle;
a first end of the first main controller is connected with the output end of the power supply voltage detection circuit, a second end of the first main controller is connected with the output end of the standby power supply voltage detection circuit, and a third end of the first main controller is connected with a controlled end of the first electronic switch; wherein,
the first main controller is used for controlling the first electronic switch to be switched off when determining that any one or more of the voltage value of the power supply detection voltage and the voltage value of the standby power supply detection voltage is smaller than the first preset voltage value.
Optionally, the first main controller is further configured to output a control signal to the power consumption load of the unmanned aerial vehicle when it is determined that the voltage value of the detection voltage of the emergency power supply is smaller than a second preset voltage value, so as to realize automatic return of the unmanned aerial vehicle.
Optionally, the drone onboard power supply further comprises:
the extension power supply output end is connected with a power supply end of extension equipment of the unmanned aerial vehicle;
the first end of the over-temperature protection circuit is connected with the output end of the extension power supply, the second end of the over-temperature protection circuit is connected with the output end of the mooring power supply and the output end of the standby power supply, and the detection end of the over-temperature protection circuit is connected with the power load of the unmanned aerial vehicle;
wherein, the excess temperature protection circuit is used for detecting the current of exporting to unmanned aerial vehicle power consumption load, and is confirming when unmanned aerial vehicle power consumption load's current is less than predetermineeing the current threshold value, the disconnection the extension power supply output with the output of mooring power supply with stand-by power supply's output.
Optionally, the over-temperature protection circuit includes:
a second electronic switch; the input end of the second electronic switch is simultaneously connected with the output ends of the mooring power supply and the standby power supply, and the output end of the second electronic switch is connected with the output end of the expansion power supply;
the detection end of the current detection circuit is connected with the electric load for the unmanned aerial vehicle, and the current detection circuit is used for detecting and outputting the current of the electric load for the unmanned aerial vehicle; and
the input end of the second main controller is connected with the output end of the current detection circuit, the output end of the second main controller is connected with the controlled end of the second electronic switch, and the second main controller determines that the current of the power load of the unmanned aerial vehicle is smaller than when the current threshold value is preset, the second electronic switch is controlled to be disconnected.
Optionally, the drone onboard power supply further comprises:
a wireless communication module;
the second main controller is in communication connection with the unmanned aerial vehicle remote controller through the wireless communication module,
the second main controller is also used for controlling the on/off state of the second electronic switch according to a control signal received from the unmanned aerial vehicle remote controller.
Optionally, the drone onboard power supply further comprises:
a first diode and a second diode;
the anode of the first diode is connected with the output end of the mooring power supply, the anode of the second diode is connected with the output end of the standby power supply, the cathode of the first diode is connected with the cathode of the second diode, and the common end of the cathode of the first diode and the cathode of the second diode is connected with the electric load for the unmanned aerial vehicle.
Optionally, the tethered power supply comprises:
a power supply mooring line interface which is connected with the power box of the unmanned aerial vehicle through a power supply mooring line,
the input end of the DC-DC converter is connected with the power supply mooring line interface, the output end of the DC-DC converter is connected with the unmanned aerial vehicle power load, and the DC-DC converter converts electric energy output by the unmanned aerial vehicle power box into power supply voltage and outputs the power supply voltage to the unmanned aerial vehicle power load.
The invention further provides an unmanned aerial vehicle system which comprises an unmanned aerial vehicle power box, an unmanned aerial vehicle remote controller, an unmanned aerial vehicle and the unmanned aerial vehicle airborne power supply.
According to the technical scheme, the mooring power supply is arranged to receive electric energy output by a ground power box of the unmanned aerial vehicle through a power supply mooring line, the electric energy is converted into power supply voltage and then output to the power load of the unmanned aerial vehicle, and then the standby power supply is arranged to output standby power supply voltage to the power load of the unmanned aerial vehicle; the power supply system comprises a mooring power supply, a standby power supply, a control circuit and a detection circuit, wherein the mooring power supply is connected with the standby power supply in parallel and supplies power to the electric load of the unmanned aerial vehicle, and the control circuit and the detection circuit are connected in parallel.
In the invention, the voltage value of the voltage of the power supply is greater than that of the voltage of the standby power supply, so that when two power supplies are arranged in parallel, the power supply with high voltage can preferentially discharge the power supply with low voltage, so that when the mooring power supply and the standby power supply are simultaneously connected to the electric load of the unmanned aerial vehicle, the mooring power supply preferentially supplies power to the electric load of the unmanned aerial vehicle, and the electric energy of the standby power supply maintains a storage state, thereby avoiding the situation that the two power supplies are simultaneously output to cause overlarge current output to the electric load of the unmanned aerial vehicle to damage a rear-stage circuit, and the voltage value of the voltage of the power supply is greater than that of the standby power supply, so that the mooring power supply preferentially discharges the standby power supply, compared with the situation that the voltage value of the power supply is equal to the voltage of the standby power supply, the scheme of switching the mooring power supply and the standby power supply is switched by a, after one path of power failure, the other path of power failure is faster, no time delay is needed, and no additional control circuit is needed, only the output voltage of the mooring power supply and/or the standby power supply is needed to be adjusted, so that the mooring power supply can preferentially supply power to the power load of the unmanned aerial vehicle, the electric energy of the standby power supply is reserved, and while the priority is set between the two power supply sources, the control circuit structure of the airborne power supply of the unmanned aerial vehicle is facilitated to be simplified, so that the stability of the control circuit of the airborne power supply of the unmanned aerial vehicle is improved, the workload of debugging the control circuit of the airborne power supply of the unmanned aerial vehicle is reduced, the size of the airborne power supply of the unmanned aerial vehicle is reduced, and the.
In addition, in the embodiment, the voltage value of the power supply voltage is set to be greater than the voltage value of the standby power supply voltage, so that when the mooring power supply and the standby power supply are simultaneously connected to the power load of the unmanned aerial vehicle, the mooring power supply preferentially supplies power to the power load of the unmanned aerial vehicle, when the mooring power supply is disconnected for a short time, the standby power supply supplies power, and when the mooring power supply is recovered to be normal again, because the voltage value of the power supply voltage output by the mooring power supply is greater than the voltage value of the standby power supply voltage output by the standby power supply, the power load of the unmanned aerial vehicle is supplied with power again by the mooring power supply, so that the standby power supply restores the storage state, the tethered power supply is immediately used to supply power and the standby power supply is caused to re-enter the storage state.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a circuit diagram of an embodiment of an airborne power supply of an unmanned aerial vehicle according to the present invention;
fig. 2 is a circuit diagram of another embodiment of the airborne power supply of the unmanned aerial vehicle of the present invention;
fig. 3 is a circuit diagram of yet another embodiment of the airborne power supply of the unmanned aerial vehicle of the present invention;
fig. 4 is a block diagram of an embodiment of the drone system of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 10 | Tethered power supply | 51 | A first |
| 20 | |
71 | |
| 30 | Power supply |
72 | Second |
| 40 | Standby power supply voltage detection circuit | D1 | |
| 60 | Extended power supply output terminal | D2 | |
| 80 | Wireless communication module | K1 | First |
| 11 | DC-DC converter | K2 | Second |
| 12 | Power supply mooring line interface |
The objects, features and advantages of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1 and 2, the invention provides an airborne power supply of an unmanned aerial vehicle, which can realize mutual backup of a mooring power supply 10 and a standby power supply 20 of the unmanned aerial vehicle, thereby ensuring that the unmanned aerial vehicle cannot crash because of losing a power source.
The unmanned aerial vehicle power box outputs high-voltage direct-current power supply voltage, the high-voltage direct-current power supply voltage is output to the input end of the mooring power supply 10 through a power supply mooring line and is connected, and the mooring power supply 10 carries out filtering, voltage reduction and voltage stabilization on the direct-current power supply voltage and outputs the direct-current power supply voltage to power loads for the unmanned aerial vehicle and unmanned aerial vehicle expansion equipment for power supply;
however, in practical application, the power supply box of the unmanned aerial vehicle can break, the power supply mooring line can break and the like, so that the unmanned aerial vehicle loses power source and falls, the unmanned aerial vehicle falls not only to damage the unmanned aerial vehicle, but also to threaten the safety of a user.
In order to solve the above problem, in an embodiment of the present invention, the onboard power supply for an unmanned aerial vehicle is used for the unmanned aerial vehicle, the unmanned aerial vehicle includes an electric load for the unmanned aerial vehicle, and the onboard power supply for the unmanned aerial vehicle includes:
the input end of the mooring power supply 10 is connected with the power box of the unmanned aerial vehicle, and the mooring power supply 10 converts electric energy output by the power box of the unmanned aerial vehicle into power supply voltage and outputs the power supply voltage to the power load of the unmanned aerial vehicle;
the output end of the standby power supply 20 is connected with the electric load of the unmanned aerial vehicle, and the standby power supply 20 is used for outputting standby power supply voltage to the electric load of the unmanned aerial vehicle; wherein,
the magnitude of voltage of power supply voltage is greater than stand-by power supply voltage's magnitude of voltage to the messenger be in mooring power supply 10 with stand-by power supply 20 inserts simultaneously extremely during the unmanned aerial vehicle power consumption load, mooring power supply 10 gives preferentially the unmanned aerial vehicle power consumption load power supply.
Wherein, unmanned aerial vehicle power consumption load can include unmanned aerial vehicle's driving motor, drive circuit and unmanned aerial vehicle control circuit etc. in addition, stand-by power supply 20 and mooring power supply 10 still can be for the extension equipment power supply on the unmanned aerial vehicle, for example for extension equipment power supplies such as picture pass ware, light.
The mooring power supply 10 may be a power supply circuit connected to the power box of the unmanned aerial vehicle, and may output electric energy output from the power box of the unmanned aerial vehicle to the power load of the unmanned aerial vehicle after voltage stabilization, filtering, voltage reduction and other processing.
The standby power supply 20 can be a storage battery or a lithium battery and the like, and is not limited here, so that the power supply requirement of the power load of the unmanned aerial vehicle can be met, the standby power supply 20 can be charged by using the power supply voltage output when the tethered power supply 10 supplies power to the power load of the unmanned aerial vehicle, and can also be provided with an independent charging interface and connected to a charging power supply for charging, the standby power supply 20 can also be a detachable battery, and the charged battery can be directly replaced when the electric quantity of the battery is exhausted; it should be noted that, in practical applications, the charging scheme of the backup power source 20 may be one or more combinations of the above three schemes, and is not limited herein.
The voltage value of the power supply voltage is greater than the voltage value of the standby power supply voltage, and the voltage value of the power supply voltage can be adjusted by adjusting the power supply voltage output by the tethered power supply 10, specifically, parameters of components of a power circuit in the tethered power supply 10 can be adjusted, or control parameters of the power circuit can be adjusted. The standby power supply voltage output by the standby power supply 20 may also be adjusted, and specifically, the voltage reduction circuit may be provided at the output end of the standby power supply 20, for example, a plurality of diodes are connected in series to form the voltage reduction circuit, and the voltage output by the standby power supply 20 is reduced by using a tube voltage drop. It is of course also possible to simultaneously adjust the power supply voltage output by the tethered power supply 10 and the backup power supply voltage output by the backup power supply 20 to control the voltage value of the power supply voltage to be greater than the voltage value of the backup power supply voltage. The specific implementation scheme is not limited here, and the requirement that the voltage value of the power supply voltage is controlled to be larger than the voltage value of the standby power supply voltage is met.
According to the technical scheme, the mooring power supply 10 is arranged to receive electric energy output by a ground power box of the unmanned aerial vehicle through a power supply mooring line, the electric energy is converted into power supply voltage and then output to the electric load of the unmanned aerial vehicle, and then the standby power supply 20 is arranged to output standby power supply voltage to the electric load of the unmanned aerial vehicle; that is, the mooring power supply 10 and the standby power supply 20 are connected in parallel to supply power for the power load of the unmanned aerial vehicle, so that the mooring power supply 10 and the standby power supply 20 are mutually standby, when any one power supply is powered off, the other power supply can be immediately continued, and compared with the situation that the output power supply is switched through the control circuit and the detection circuit, the switching of the invention has no time delay, realizes uninterrupted power supply, ensures that the unmanned aerial vehicle cannot crash or cause safety accidents due to unstable flight because of losing power sources, improves the safety and the reliability of the unmanned aerial vehicle, and protects the safety of the unmanned aerial vehicle and users.
In the invention, the voltage value of the power supply voltage is greater than the voltage value of the standby power supply voltage, so that when two power supplies are arranged in parallel, the power supply with high voltage can preferentially discharge the power supply with low voltage, so that when the mooring power supply 10 and the standby power supply 20 are simultaneously connected to the electric load of the unmanned aerial vehicle, the mooring power supply 10 preferentially supplies power to the electric load of the unmanned aerial vehicle, and the electric energy of the standby power supply 20 maintains a storage state, thereby avoiding the situation that the two power supplies are simultaneously output to cause the current output to the electric load of the unmanned aerial vehicle to be overlarge and damage a rear-stage circuit, and the voltage value of the power supply voltage is greater than the voltage value of the standby power supply voltage, so that the mooring power supply 10 preferentially discharges the standby power supply 20, and compared with the situation that the voltage value of the power supply voltage is equal to the standby power supply voltage, the scheme of selecting the mooring power supply 10 to supply power and the standby power supply, after one power supply is cut off, the other power supply is higher in continuous speed (the time required by a control change-over switch is not needed because the two power supplies are connected in parallel), no delay time is caused, and no additional control circuit is needed, only the output voltage of the mooring power supply 10 and/or the standby power supply 20 is needed to be adjusted, so that the mooring power supply 10 can preferentially supply power to the power load of the unmanned aerial vehicle, the electric energy of the standby power supply 20 is reserved, the priority is set between the two power supplies, the control circuit structure of the airborne power supply of the unmanned aerial vehicle is facilitated to be simplified, the stability of the control circuit of the airborne power supply of the unmanned aerial vehicle is increased, the workload of debugging the control circuit of the airborne power supply of the unmanned aerial vehicle is reduced, the size of the airborne power supply of the unmanned.
In addition, the present embodiment is able to reduce the power consumption by setting the voltage value of the power supply voltage to be greater than the voltage value of the backup power supply voltage, so that when the tethered power supply 10 and the backup power supply 20 are simultaneously connected to the unmanned aerial vehicle electrical load, the tethered power supply 10 preferentially supplies power to the unmanned aerial vehicle electrical load, when the tethered power supply 10 is disconnected for a short time or the voltage of the power supply is greatly reduced, the standby power supply 20 can be automatically switched to supply power, and after the tethered power supply 10 is recovered to be normal, at this time, the voltage value of the power supply voltage output by the mooring power supply 10 is greater than the voltage value of the backup power supply voltage output by the backup power supply 20, the electric load for the unmanned aerial vehicle is supplied with power by the mooring power supply 10 again, the standby power supply 20 is enabled to restore the storage state, that is, the standby power supply and the mooring power supply are connected in parallel, so that the voltage-stabilizing output is realized.
The invention can avoid the crash of the unmanned aerial vehicle caused by short-time power failure or large voltage fluctuation of the mooring power supply 10, and meanwhile, the mooring power supply 10 can be used for supplying power immediately after the mooring power supply 10 is recovered, and the standby power supply 20 can enter the storage state again.
In one embodiment, the voltage value of the power supply voltage is 17V, and the voltage value of the standby power supply voltage is 16.8V; of course, other voltage values are also possible, and are not limited herein.
It should be noted that, to realize mutual backup of the standby power supply 20 and the tethered power supply 10, the most important premise is that both the standby power supply 20 and the tethered power supply 10 are turned on and operate normally, that is, the tethered power supply 10 can output a power supply voltage, and the standby power supply 20 can output a standby power supply voltage. However, in practical applications, there are various factors that cause one of the tethered power supply 10 or the backup power supply 20 to fail to work normally when the unmanned aerial vehicle takes off, for example, the switch of the tethered power supply 10 is not turned on, the power supply tethered line is broken, the power supply box of the unmanned aerial vehicle is damaged, the switch of the backup power supply 20 is not turned on, and the power of the backup power supply 20 is exhausted. At this moment, the unmanned aerial vehicle only depends on one of the mooring power supply 10 or the standby power supply 20 to supply power and can take off, the user can not perceive one of the mooring power supply 10 or the standby power supply 20 in the airborne power supply of the unmanned aerial vehicle and can not supply power, take the example that the standby power supply 20 can not supply power, when in the operation process of the unmanned aerial vehicle, the power box of the unmanned aerial vehicle breaks down, when the power supply mooring line is broken, at this moment, the standby power supply 20 can not be immediately continued as the standby power supply 20, lead to the fact that the unmanned aerial vehicle loses power source and falls down, the unmanned aerial vehicle falls down and not only damages the unmanned aerial vehicle.
Referring to fig. 2, in order to solve the above problem, in an embodiment of the present invention, the power supply onboard the drone further includes:
the detection end of the power supply voltage detection circuit 30 is connected with the output end of the mooring power supply 10, and the power supply voltage detection circuit 30 is used for detecting the power supply voltage and outputting corresponding power supply detection voltage;
a standby power supply voltage detection circuit 40, a detection end of which is connected with the output end of the standby power supply 20, wherein the standby power supply voltage detection circuit 40 is used for detecting the standby power supply voltage and outputting a corresponding standby power supply detection voltage;
the main control circuit, main control circuit's input respectively with power supply voltage detection circuit 30's output and stand-by power supply voltage detection circuit 40's output is connected, main control circuit is used for confirming when the voltage value of power supply detection voltage with arbitrary one or more in the voltage value of stand-by power supply detection voltage is less than first predetermined voltage value, control unmanned aerial vehicle power consumption load stop work.
Both the power supply voltage detection circuit 30 and the standby power supply voltage detection circuit 40 may be implemented by using a sampling circuit, such as a voltage division circuit.
The main control circuit can comprise devices such as a main control chip, an analog-to-digital converter and an electronic switch, and the main control circuit has various realization circuits, so that the detection voltage of the power supply can be compared with a first preset voltage value, and the detection voltage of the standby power supply can be compared with the first preset voltage value; and when determining that any one or more of the voltage value of the power supply detection voltage and the voltage value of the standby power supply detection voltage are smaller than a first preset voltage value, controlling the electric load of the unmanned aerial vehicle to stop working.
This embodiment technical scheme can detect power supply voltage and stand-by power supply voltage before unmanned aerial vehicle takes off to output corresponding power supply detection voltage and stand-by power supply detection voltage. Main control circuit can be when confirming the voltage value of power supply detection voltage with arbitrary one or more in the voltage value of stand-by power supply detection voltage is less than first default voltage value, also when mooring power supply 10 or stand-by power supply 20 can't normally work, control unmanned aerial vehicle power consumption load stop work specifically can be the power supply (mooring power supply 10 and stand-by power supply 20) that cuts off unmanned aerial vehicle power consumption load to make unmanned aerial vehicle can't open, ensure that unmanned aerial vehicle can not take off at arbitrary one in mooring power supply 10 or stand-by power supply 20 can't normally work, promote unmanned aerial vehicle's security.
Referring to fig. 2, further, the master control circuit includes:
the input end of the first electronic switch K1 is simultaneously connected with the output end of the mooring power supply 10 and the output end of the standby power supply 20, and the output end of the first electronic switch K1 is connected with the electric load of the unmanned aerial vehicle;
a first end of the first main controller 51 is connected to the output end of the power supply voltage detection circuit 30, a second end of the first main controller 51 is connected to the output end of the standby power supply voltage detection circuit 40, and a third end of the first main controller 51 is connected to the controlled end of the first electronic switch K1; wherein,
the first main controller 51 is configured to control the first electronic switch K1 to be turned off when it is determined that any one or more of the voltage value of the power supply detection voltage and the voltage value of the backup power supply detection voltage is smaller than the first preset voltage value.
The first electronic switch K1 may be a combination of one or more of a triode, a MOS transistor, an IGBT, and a relay.
The first main controller 51 may be various types of controllers, and when a main controller without an analog-to-digital conversion function is selected, an analog-to-digital conversion function is further added.
The first main controller 51 compares the voltage value of the power supply detection voltage and the voltage value of the backup power detection voltage with a first preset voltage value, only when the voltage values of the power supply detection voltage and the backup power detection voltage are both greater than the first preset voltage value, that is, the tethered power supply 10 and the backup power supply 20 both normally output power, the first main controller 51 outputs a first level signal to control the first electronic switch K1 to be turned on (the level value of the first level signal is related to the type of the first electronic switch K1, for example, the first electronic switch K1 is turned on at a high level, and when the first level signal is turned off at a low level, the first main controller 51 determines that either one or both of the voltage value of the power supply detection voltage and the voltage value of the backup power detection voltage are less than the first preset voltage value, i.e. one or both of the tethered power supply 10 and the backup power supply 20 cannot normally output power, the first electronic switch K1 is controlled to be opened. When ensuring that mooring power supply 10 and stand-by power supply 20 can be equipped with each other, the unmanned aerial vehicle just carries out work.
Referring to fig. 2, in another embodiment, the output voltages of the power supply voltage detection circuit 30 and the standby power supply voltage detection circuit 40 may be level-converted and output to two input terminals of the and logic circuit, and the output terminal of the and logic circuit is further connected to the first main controller 51, so that when the voltage value of the power supply detection voltage and the voltage value of the standby power supply detection voltage are both "1", that is, when the tethered power supply 10 and the standby power supply 20 both work normally, the and logic circuit outputs a high level to the first main controller 51; when any one of the voltage values of the power supply detection voltage and the standby power supply detection voltage is "0", that is, when any one or both of the tethered power supply 10 and the standby power supply 20 does not normally operate, the and logic circuit outputs a low level to the first main controller 51; the first main controller 51 controls the first electronic switch K1 to be turned on when receiving a high level, and the first main controller 51 controls the first electronic switch K1 to be turned off when receiving a low level.
This embodiment ensures that unmanned aerial vehicle can not in stand-by power supply 20 or mooring power supply 10 arbitrary one can't normally work often, still takes off, only ensures that the unmanned aerial vehicle can be under the prerequisite of mooring power supply 10 and stand-by power supply 20 each other being equipped with, and unmanned aerial vehicle just operation is favorable to promoting the security of unmanned aerial vehicle during operation.
Referring to fig. 2, in another embodiment, the first main controller 51 is further configured to output a control signal to the unmanned aerial vehicle power load when it is determined that the voltage value of the backup power detection voltage is smaller than a second preset voltage value, so as to implement automatic return of the unmanned aerial vehicle.
It should be noted that the backup power source 20 may be a storage battery or a lithium battery, and when the electric quantity of the backup power source is insufficient, the voltage of the output backup power source will decrease; this embodiment is through setting up first main control unit 51 and stand-by power supply voltage detection circuitry 40, real-time detection/periodically detect stand-by power supply 20 output voltage, also inspect stand-by power supply 20 electric quantity, when confirming that stand-by power supply detection voltage's magnitude of voltage is less than the second and predetermines magnitude of voltage (the setting of the second predetermines magnitude of voltage, can set up to the magnitude of voltage that unmanned aerial vehicle battery electric quantity corresponds when being less than 30% or other percentages), when confirming stand-by power supply 20 electric quantity is not enough, output control signal to unmanned aerial vehicle's control circuit, in order to control unmanned aerial vehicle automatic returning, thereby ensure unmanned aerial vehicle when battery powered, can not use up because of battery electric quantity, can't return to navigate and lead to the crash accident, this embodiment is favorable. Wherein, the voltage threshold value under the condition of the low-power of unmanned aerial vehicle can be ensured for the predetermined voltage value of second to the second, when detecting to be less than the predetermined voltage value of second, first main control unit 51 can control unmanned aerial vehicle power consumption load and get into low-power consumption mode, only maintains the required power supply when returning automatically to boat, for example, can cut off the power supply of functional module such as taking a photo by plane, picture biography to ensure that unmanned aerial vehicle can have sufficient electric quantity to return boat smoothly.
Specifically, in this embodiment, the electric load for the unmanned aerial vehicle may be provided with a GPS terminal, an unmanned aerial vehicle controller, a plurality of unmanned aerial vehicle motor drive circuits (e.g., 4), and a plurality of unmanned aerial vehicle motors (e.g., 4); wherein, GPS terminal record unmanned aerial vehicle initial positioning coordinate (initial positioning coordinate can be the coordinate of unmanned aerial vehicle power supply box), when unmanned aerial vehicle controller received the control signal that represents unmanned aerial vehicle stand-by power supply electric quantity is not enough, unmanned aerial vehicle controller regards as the target flight point with the initial positioning coordinate, through a plurality of unmanned aerial vehicle motor drive circuit, drive the unmanned aerial vehicle motor respectively, and then the direction of rotation and the rotation rate of a plurality of paddles of control unmanned aerial vehicle, fly back to the way towards the target flight point with control unmanned aerial vehicle.
In this embodiment, the second preset voltage value is smaller than the first preset voltage value, the first preset voltage value is used to determine that the standby power supply 20 or the power box of the unmanned aerial vehicle connected to the tethered power supply 10 has sufficient electric quantity and can normally operate, and the second preset voltage value is used to determine that the electric quantity of the standby power supply 20 is low enough to require immediate return, so as to avoid crash. The second predetermined voltage value is therefore set to be less than the first predetermined voltage value.
It should be further noted that, the onboard power supply of the unmanned aerial vehicle needs to supply power to the unmanned electric load (the motor and the drive control circuit thereof), and also needs to supply power to the expansion equipment connected to the power section of the expansion equipment, such as a map transmitter, an illuminating lamp, etc.; in practical application, unmanned aerial vehicle machine carries power supply volume needs to be as little as possible to guarantee unmanned aerial vehicle's light flexibility, consequently, unmanned aerial vehicle can not extra equipment radiator, and the heat dissipation of machine carries the power supply and need rely on the rotatory huge wind-force that produces of unmanned aerial vehicle's paddle, forces the forced air cooling heat dissipation. But unmanned aerial vehicle's expander device is independent control with unmanned aerial vehicle's driving motor, just can be because human factor or objective factor, lead to the unmanned aerial vehicle expander device to open, but unmanned aerial vehicle's driving motor does not open and removes the unmanned aerial vehicle paddle rotatory, and unmanned aerial vehicle machine carries the power supply for the expander device this moment, but because do not have the rotatory huge wind-force of producing of unmanned aerial vehicle's paddle to come forced air cooling heat dissipation, leads to the overheated and damage of unmanned aerial vehicle machine carries the power.
To solve the above problem, referring to fig. 2 and 3, in an embodiment, the power supply onboard the drone further includes:
an extended power supply output terminal 60 connected to a power supply terminal of an extension device of the unmanned aerial vehicle;
the first end of the over-temperature protection circuit is connected with the output end 60 of the expansion power supply, the second end of the over-temperature protection circuit is connected with the output ends of the mooring power supply 10 and the standby power supply 20, and the detection end of the over-temperature protection circuit is connected with the power load of the unmanned aerial vehicle;
wherein, the excess temperature protection circuit is used for detecting the current of exporting to unmanned aerial vehicle power consumption load, and is confirming when unmanned aerial vehicle power consumption load's current is less than predetermineeing the current threshold value, the disconnection of extension power supply output 60 with the output of mooring power supply 10 with stand-by power supply 20's output.
The unmanned aerial vehicle expansion equipment can be a map transmitter, a lighting lamp and the like.
Excess temperature protection circuit detects at any time the electric current of unmanned aerial vehicle power load specifically can be connected with the return circuit of unmanned aerial vehicle power load, also is the return circuit that stand-by power supply 20/mooring power supply 10 and unmanned aerial vehicle power load constitute.
The over-temperature protection circuit can comprise one or more devices of a main control chip, an analog-to-digital converter, an electronic switch, a resistor, a subtracter, a Hall element and the like, and in practical application, the over-temperature protection circuit has various realization circuits, so that the current of the power load of the unmanned aerial vehicle can be compared with a preset current threshold; when determining that the current of the electric load for the unmanned aerial vehicle is smaller than a preset current threshold value, the connection between the extended power supply output end 60 and the output end of the mooring power supply 10 and/or the output end of the standby power supply 20 is disconnected.
According to the technical scheme, when the current of the electric load of the unmanned aerial vehicle is determined to be smaller than the preset current threshold value, namely when the blades of the unmanned aerial vehicle do not rotate, the connection between the extended power supply output end 60 and the output end of the mooring power supply 10 and/or the output end of the standby power supply 20 can be disconnected. Thereby ensure that the extension equipment can not work and can't obtain good heat dissipation when unmanned aerial vehicle's paddle is not rotatory, lead to the overheated and burn out of unmanned aerial vehicle machine carries power.
Referring to fig. 2 and 3, further, the over-temperature protection circuit includes:
a second electronic switch K2; the input end of the second electronic switch K2 is simultaneously connected with the output ends of the mooring power supply 10 and the standby power supply 20, and the output end of the second electronic switch K2 is connected with the extended power supply output end 60;
the detection end of the current detection circuit 71 is connected with the electric load for the unmanned aerial vehicle, and the current detection circuit 71 is used for detecting and outputting the current of the electric load for the unmanned aerial vehicle; and
second main control unit 72, the input of second main control unit 72 with current detection circuit 71 output is connected, the output of second main control unit 72 with second electronic switch K2's controlled end is connected, second main control unit 72 is confirming unmanned aerial vehicle power consumption load's electric current is less than when predetermineeing the current threshold value, confirm that the unmanned aerial vehicle load does not start, and then control second electronic switch K2 disconnection to break off unmanned aerial vehicle extension equipment's power.
Wherein, unmanned aerial vehicle power consumption load described in this embodiment indicates unmanned aerial vehicle driving motor and unmanned aerial vehicle paddle. The unmanned aerial vehicle paddle is rotatory, normally works for unmanned aerial vehicle power consumption load promptly, and the unmanned aerial vehicle paddle is not rotatory, and unmanned aerial vehicle power consumption load normally works promptly.
The second electronic switch K2 may be a combination of one or more of a triode, a MOS transistor, an IGBT, and a relay.
The second master controller 72 may be various types of controllers, and when a master controller without an analog-to-digital conversion function is selected, an analog-to-digital conversion function is further added. Referring to fig. 3, the second master controller 72 and the first master controller 51 in the master control circuit are the same master controller, or may be different master controllers, and this embodiment may be: the second master controller 72 is the same master controller as the first master controller 51 in the master control circuit.
The current detection circuit 71 can include resistance and subtracter, and resistance and unmanned aerial vehicle power consumption load are established ties, and the first input and the second input of subtracter are connected with resistance both ends respectively, and the subtracter can output the voltage difference at resistance both ends this moment, and the resistance value of resistance is known to can obtain the electric current of flowing through resistance according to the voltage difference at resistance both ends and resistance value, also be the electric current of unmanned aerial vehicle power consumption load.
Of course, the current detection circuit may also be implemented by using a current detection device such as a hall sensor, which is not limited herein.
The second main controller 72 compares the current of the electric load of the unmanned aerial vehicle with the preset current threshold, and in practical application, the comparison of the current can be converted into comparison of voltage; when the current of the electric load for the unmanned aerial vehicle is larger than the preset current threshold value, the electric load for the unmanned aerial vehicle is determined to work normally, and at the moment, the blades of the unmanned aerial vehicle rotate to dissipate heat, so that the expansion equipment of the unmanned aerial vehicle can be started; when the electric current at unmanned aerial vehicle power consumption load is less than or when presetting the electric current threshold value, confirm unmanned aerial vehicle power consumption load is normal work also that unmanned aerial vehicle's paddle is not rotatory, disconnection second electronic switch K2 this moment, thereby the disconnection extended power supply output 60 with the output of mooring power supply 10 and/or the connection of stand-by power supply 20's output controls unmanned aerial vehicle extension equipment stop work, avoids the overheated and burns out of unmanned aerial vehicle machine-carried power.
This embodiment can ensure that unmanned aerial vehicle machine carries power work and rotatory at the unmanned aerial vehicle paddle, also work and guarantee that unmanned aerial vehicle machine carries power and can not overheat and burn out under the good prerequisite of heat dissipation.
Further, the second main controller 72 and the first main controller 51 are the same main controller, and the main controller is further configured to determine that the tethered power supply 10 is disconnected and control the power-off of the interface of the expansion device when determining that the voltage value of the power supply is smaller than a third preset voltage, so as to save the electric energy of the standby power supply.
Therefore, when the standby power supply 20 supplies power, the unmanned aerial vehicle can have enough cruising ability to continue operation or land safely.
With reference to fig. 2 and 3, further, the power supply onboard the unmanned aerial vehicle further includes:
a wireless communication module 80;
the second main controller 72 is in communication connection with the unmanned aerial vehicle remote controller through the wireless communication module 80,
the second main controller 72 is further configured to control an on/off state of the second electronic switch K2 according to a control signal received from the drone remote controller.
The wireless communication module 80 can be a communication module of the unmanned aerial vehicle and a remote controller of the unmanned aerial vehicle, and the wireless communication module 80 can also be independently arranged, and the wireless communication module 80 can be a 433 communication module and can also be other communication modules.
This embodiment has realized opening/closing of unmanned aerial vehicle remote controller control unmanned aerial vehicle extension equipment, the unmanned aerial vehicle's of increase controllability, when unmanned aerial vehicle power supply box/unmanned aerial vehicle stand-by power supply 20 is not enough, can pass through the unmanned aerial vehicle remote controller, control second electronic switch K2 disconnection, stop for the extension equipment power supply, save stand-by power supply's electric energy then, increase unmanned aerial vehicle's time of endurance.
Referring to fig. 2 and 3, in an embodiment, the power supply onboard the drone further includes:
a first diode D1 and a second diode D2;
the anode of the first diode D1 is connected with the output end of the mooring power supply 10, the anode of the second diode D2 is connected with the output end of the standby power supply 20, the cathode of the first diode D1 is connected with the cathode of the second diode D2, and the common end of the cathode of the first diode D1 and the cathode of the second diode D2 is connected with the electric load for the unmanned aerial vehicle.
In the embodiment, by providing the first diode D1 and the second diode D2, the first diode D1 can prevent the backup power voltage output by the backup power supply 20 from flowing back into the tethered power supply 10 and burning down the tethered power supply 10; the second diode D2 prevents the power supply voltage from the tethered power supply 10 from flowing back into the backup power supply 20 and burning the backup power supply 20. This embodiment is favorable to promoting unmanned aerial vehicle airborne power source's security and stability.
Referring to fig. 2 and 3, in one embodiment, the tethered power supply 10 includes:
a power supply mooring line interface 12 connected with the unmanned aerial vehicle power box through a power supply mooring line,
the input end of the DC-DC converter 11 is connected with the power supply mooring line interface 12, the output end of the DC-DC converter 11 is connected with the unmanned aerial vehicle power load, and the DC-DC converter 11 converts the electric energy output by the unmanned aerial vehicle power box into power supply voltage and outputs the power supply voltage to the unmanned aerial vehicle power load.
It can be understood that, in order to guarantee energy transmission efficiency (energy transmission is generally positively correlated with transmission voltage), unmanned aerial vehicle power supply box output voltage is very high (for example 400V), can not directly supply power for unmanned aerial vehicle, consequently can carry out steady voltage and step-down through the DC-DC circuit and handle, for unmanned aerial vehicle power supply again, ensures that unmanned aerial vehicle is not burnt out.
Referring to fig. 4, the invention also provides an unmanned aerial vehicle system, which comprises an unmanned aerial vehicle power box 1, an unmanned aerial vehicle remote controller 3, an unmanned aerial vehicle 2 and the unmanned aerial vehicle airborne power supply; this unmanned aerial vehicle machine carries concrete structure of power refers to above-mentioned embodiment, because this unmanned aerial vehicle system has adopted all technical scheme of above-mentioned all embodiments, consequently has all beneficial effects that the technical scheme of above-mentioned embodiment brought at least, and the repeated description is no longer repeated here one by one. Wherein, unmanned aerial vehicle power box 1 is connected with unmanned aerial vehicle machine carries the power, and unmanned aerial vehicle machine carries the power and sets up in the unmanned aerial vehicle, unmanned aerial vehicle remote controller 3 and unmanned aerial vehicle communication connection.
The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. The utility model provides an unmanned aerial vehicle airborne power supply for unmanned aerial vehicle, unmanned aerial vehicle includes unmanned aerial vehicle power consumption load, its characterized in that, unmanned aerial vehicle airborne power supply includes:
the input end of the mooring power supply is connected with the power box of the unmanned aerial vehicle, and the mooring power supply converts electric energy output by the power box of the unmanned aerial vehicle into power supply voltage and outputs the power supply voltage to the power load of the unmanned aerial vehicle;
the output end of the standby power supply is connected with the electric load of the unmanned aerial vehicle, and the standby power supply is used for outputting standby power supply voltage to the electric load of the unmanned aerial vehicle; wherein,
the magnitude of voltage of power supply voltage is greater than the magnitude of voltage of stand-by power supply voltage to the messenger be in the mooring power source with stand-by power supply inserts simultaneously extremely during the unmanned aerial vehicle power consumption load, mooring power source gives preferentially the unmanned aerial vehicle power consumption load supplies power.
2. The drone onboard power supply of claim 1, further comprising:
the detection end of the power supply voltage detection circuit is connected with the output end of the mooring power supply, and the power supply voltage detection circuit is used for detecting the power supply voltage and outputting corresponding power supply detection voltage;
the detection end of the standby power supply voltage detection circuit is connected with the output end of the standby power supply, and the standby power supply voltage detection circuit is used for detecting the standby power supply voltage and outputting corresponding standby power supply detection voltage;
the main control circuit, main control circuit's input respectively with power supply voltage detection circuit's output and stand-by power supply voltage detection circuit's output is connected, main control circuit is used for confirming when arbitrary one in power supply voltage's the voltage value with stand-by power supply voltage's the voltage value is less than first predetermined voltage value, control unmanned aerial vehicle power consumption load stop work.
3. The drone onboard power supply of claim 2, wherein the master control circuit comprises:
the input end of the first electronic switch is connected with the output end of the mooring power supply and the output end of the standby power supply at the same time, and the output end of the first electronic switch is connected with the power load of the unmanned aerial vehicle;
a first end of the first main controller is connected with the output end of the power supply voltage detection circuit, a second end of the first main controller is connected with the output end of the standby power supply voltage detection circuit, and a third end of the first main controller is connected with a controlled end of the first electronic switch; wherein,
the first main controller is used for controlling the first electronic switch to be switched off when determining that any one or more of the voltage value of the power supply detection voltage and the voltage value of the standby power supply detection voltage is smaller than the first preset voltage value.
4. The airborne power supply of unmanned aerial vehicle of claim 3, wherein the first main controller is further configured to output a control signal to the unmanned aerial vehicle power load when determining that the voltage value of the backup power supply detection voltage is less than a second preset voltage value, so as to realize automatic return of the unmanned aerial vehicle.
5. The drone onboard power supply of claim 1, further comprising:
the extension power supply output end is connected with a power supply end of extension equipment of the unmanned aerial vehicle;
the first end of the over-temperature protection circuit is connected with the output end of the extension power supply, the second end of the over-temperature protection circuit is connected with the output end of the mooring power supply and the output end of the standby power supply, and the detection end of the over-temperature protection circuit is connected with the power load of the unmanned aerial vehicle;
wherein, the excess temperature protection circuit is used for detecting the current of exporting to unmanned aerial vehicle power consumption load, and is confirming when unmanned aerial vehicle power consumption load's current is less than predetermineeing the current threshold value, the disconnection the extension power supply output with the output of mooring power supply with stand-by power supply's output.
6. The drone onboard power supply of claim 5, wherein the over-temperature protection circuit comprises:
a second electronic switch; the input end of the second electronic switch is simultaneously connected with the output ends of the mooring power supply and the standby power supply, and the output end of the second electronic switch is connected with the output end of the expansion power supply;
the detection end of the current detection circuit is connected with the electric load for the unmanned aerial vehicle, and the current detection circuit is used for detecting and outputting the current of the electric load for the unmanned aerial vehicle; and
the input end of the second main controller is connected with the output end of the current detection circuit, the output end of the second main controller is connected with the controlled end of the second electronic switch, and the second main controller determines that the current of the power load of the unmanned aerial vehicle is smaller than when the current threshold value is preset, the second electronic switch is controlled to be disconnected.
7. The drone onboard power supply of claim 6, further comprising:
a wireless communication module;
the second main controller is in communication connection with the unmanned aerial vehicle remote controller through the wireless communication module,
the second main controller is also used for controlling the on/off state of the second electronic switch according to a control signal received from the unmanned aerial vehicle remote controller.
8. The drone onboard power supply of claim 1, further comprising:
a first diode and a second diode;
the anode of the first diode is connected with the output end of the mooring power supply, the anode of the second diode is connected with the output end of the standby power supply, the cathode of the first diode is connected with the cathode of the second diode, and the common end of the cathode of the first diode and the cathode of the second diode is connected with the electric load for the unmanned aerial vehicle.
9. The drone onboard power supply of claim 1, wherein the tethered power supply comprises:
a power supply mooring line interface which is connected with the power box of the unmanned aerial vehicle through a power supply mooring line,
the input end of the DC-DC converter is connected with the power supply mooring line interface, the output end of the DC-DC converter is connected with the unmanned aerial vehicle power load, and the DC-DC converter converts electric energy output by the unmanned aerial vehicle power box into power supply voltage and outputs the power supply voltage to the unmanned aerial vehicle power load.
10. An unmanned aerial vehicle system comprising an unmanned aerial vehicle power box, an unmanned aerial vehicle remote control, an unmanned aerial vehicle, and the unmanned aerial vehicle onboard power supply of any of claims 1-9.
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