CN208862598U - A kind of battery management system being tethered at unmanned plane - Google Patents
A kind of battery management system being tethered at unmanned plane Download PDFInfo
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- CN208862598U CN208862598U CN201821569648.0U CN201821569648U CN208862598U CN 208862598 U CN208862598 U CN 208862598U CN 201821569648 U CN201821569648 U CN 201821569648U CN 208862598 U CN208862598 U CN 208862598U
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Abstract
The utility model discloses a kind of battery management systems for being tethered at unmanned plane, including main power source converter, backup battery, current detection circuit, current reference and feedback control circuit and voltage-setting circuitry；The main power source converter and the backup battery are connected in parallel to load both ends；The cathode of the backup battery is connected with current detection circuit, the current detection circuit is connect with the current reference and feedback control circuit, the current reference and feedback control circuit are connect with the voltage-setting circuitry, and the output end of the voltage-setting circuitry is connected to the control port of the main power source converter.Main power source converter can not only be avoided frequently to charge to reserve battery using this programme, extend the service life of reserve battery, and additional line loss will not be generated, it does not need that energy of the additional circuit to absorb counter electromotive force is added yet, it is more efficiently and safe for the management of charging and discharging of battery.
Description
Technical field
The utility model relates to technical field of battery management, in particular to a kind of battery management system for being tethered at unmanned plane.
Background technique
The power supply for being tethered at unmanned plane is to be provided from ground power supply by power transmission cable to airborne equipment, and unmanned plane may be implemented
In the sky, the hovering time is even tens hours several hours for hovering for a long time.The considerations of as reserved regimen, usually
It is also required to a small-sized power battery, on unmanned plane to there is event in ground power supply accident power-off or power supply system
In the case where barrier, unmanned plane safe falling is got off.In order to mitigate the weight of unmanned plane, the capacity of this backup power battery exists
Guarantee to select limited capacity as far as possible in the case where unmanned plane landing flight, when normal flight, needs to avoid power electric
Tank discharge just allows it to intervene power supply only in ground power supply failure.Simultaneously because the electric current of main power source converter compares
Greatly, it is also desirable to avoid main power source converter from frequently charging to battery, this just needs the Managed Solution of a battery to safeguard battery
Work, extend the service life of battery.
In view of the above-mentioned problems, can existing scheme for reference have following two:
A kind of scheme is to provide electric energy, main power source converter by main power source converter when normal work using switching
Backup battery is cut by relay or electronic switch after failure and is powered, this scheme can completely avoid battery misplace electricity and
Frequent charge, but need to introduce switching switch, the weight of system is increased, the reliability of system is also reduced.
Another scheme is now relatively common solution: one diode of battery series connection is converted with main power source again
Device is in parallel, and in this way since the barrier effect of diode can be to avoid battery by frequent charge, but the introducing of diode will increase
The loss of route.
Both the above scheme battery is all not directly connected in the electrical equipment of unmanned plane, if the electricity consumption of unmanned plane is set
It is standby to generate counter electromotive force, special circuit is needed to absorb the energy of this counter electromotive force, the voltage meeting of no person's output bus
It is lifted the damage for causing device, so still needing battery to be directly parallel in unmanned plane electricity consumption than attractive scheme
In load, battery can use in this way to absorb the energy of counter electromotive force.
Therefore, it is badly in need of designing a set of new power-supply management system, the above problem is solved perfectly.
Utility model content
Technical problem to be solved by the utility model is: directly in parallel with power load in main power source converter, battery
In the case of, how effective management of charging and discharging is carried out to battery, maintains battery backup electricity and maintenance battery life to reach
Purpose.
The technical scheme adopted by the utility model to solve the technical problem is as follows:
A kind of battery management system being tethered at unmanned plane, including main power source converter, backup battery, current detection circuit,
Current reference and feedback control circuit and voltage-setting circuitry；The main power source converter is connected in parallel to the backup battery
Load both ends；The backup battery anode be connected with the anode of the main power source converter, the cathode of the backup battery and
The cathode of the main power source converter is connected；The control terminal that the main power source converter can receive external voltage signal with one
Mouthful, and a certain range of fine tuning can be carried out to output voltage Vo；The current detection circuit accesses to the backup battery
In circuit loop, detection flows through the electric current Ib of the backup battery, obtains a voltage signal Vb；The voltage signal Vb is admitted to
The current reference and feedback control circuit, the current reference and feedback control circuit are according to the voltage signal Vb and electric current
The relative size of benchmark relatively obtains a voltage control signal Vc, and the voltage control signal Vc is admitted to the voltage again and sets
Circuits, the voltage control signal Vs, the voltage control signal Vs for obtaining an adjusting access the main power source converter
Control port, and the main power source converter output voltage Vo is controlled, and then control the size of the electric current Ib, it constitutes one and bears
Feedback control loop.
Further, the current detection circuit include one can be by electric current for obtaining the sample resistance and one of the electric current Ib
The current direction that signal amplifies the operational amplifier of fixed multiple, and flows out battery cathode is electric current positive direction, the electricity of positive direction
The raw voltage signal of miscarriage is Vb.
Further, Hall current sensor also can be used in the current detection circuit, and flows out the electric current side of battery cathode
The voltage signal generated to the electric current for electric current positive direction, positive direction is Vb.
Further, current reference and feedback control circuit include a pi regulator, the non-inverting input terminal of the pi regulator
The reference current of voltage reference Vref output is accessed, the inverting input terminal of the pi regulator accesses the current signal Vb, institute
The output end for stating pi regulator accesses the voltage-setting circuitry, and output voltage control signal Vc.
Further, the voltage-setting circuitry is an adder circuit, the voltage control signal Vc and a reference voltage
Vr is accessed in the adder circuit, after linear superposition, exports the voltage control by the output end of the adder circuit
Signal Vs processed.
Further, the main power source converter is a DC/DC converter for having voltage stabilizing function, and energization input connects
To high voltage DC busses, output end of powering is connected to low-voltage direct bus.
Further, the voltage control signal Vs of the voltage-setting circuitry output can also be transferred to a voltage feedback circuit,
After being superimposed again with the voltage signal of high voltage DC busses, feed back to ground power supply, the voltage signals of the high voltage DC busses by
The voltage feedback circuit detection obtains.
The beneficial effects of the utility model are: can not only avoid main power source converter frequently to standby electricity using this programme
Pond charging, extends the service life of reserve battery, and will not generate additional line loss, does not also need that additional electricity is added
Road absorbs the energy of counter electromotive force, for battery management of charging and discharging more efficiently and safety.
Detailed description of the invention
Fig. 1 is to be tethered at the existing battery management system structural schematic diagram of unmanned plane.
Fig. 2 is the circuit structure block diagram of the embodiments of the present invention 1.
Fig. 3 is the current detection circuit figure in Fig. 2.
Fig. 4 is current reference and feed circuit figure in Fig. 2.
Fig. 5 is the voltage-setting circuitry figure in Fig. 2.
Fig. 6 is the circuit structure block diagram of the embodiments of the present invention 2.
In figure: 01- load, 02- main power source converter, 03- backup battery, 04- current detection circuit, 05- current reference
And feedback control circuit, 06- voltage-setting circuitry, 07- voltage feedback circuit, 08- ground power supply；021- high voltage DC busses,
022- low-voltage direct bus.
Specific embodiment
Below in conjunction with attached drawing.The utility model is described further.
Fig. 1, which is shown, is tethered at the existing battery management system structure of unmanned plane, wherein main power source converter is a band
There is the DC/DC converter of voltage stabilizing function, high voltage DC busses is transformed into the low-voltage direct bus of appropriate voltage, for unmanned plane
Electric equipment uses, and backup battery is connected in parallel in low-voltage direct bus by an isolating diode, low-voltage direct when normal work
The voltage of bus is slightly above the voltage of battery, and electrical equipment takes electricity from main power source converter；When main power source converter is insufficient or event
When barrier, backup battery is by isolating diode to power supply for electrical equipment.Due to there is the buffer action of diode, backup battery can only
Electric discharge, cannot charge, fundamentally avoid a possibility that being charged or overcharged repeatedly.Certainly it the drawbacks of be also it is outstanding,
It is the loss of diode bring additional wires first, followed by diode blocks the charging current from main power source converter,
Also block and loaded from unmanned plane, such as motor, counter electromotive force, the anti-of absorbing load cannot be carried out using this backup battery
To energy.
Embodiment 1:
The first embodiment of the utility model is shown in Fig. 2.In this embodiment, backup battery 03 and main electricity
Source converter 02 is directly connected in 01 both ends of load in parallel.Wherein, main power source converter 02 has a control port Vs, can be with
Receive external voltage signal, a certain range of fine tuning is carried out to output voltage Vo.The anode of backup battery 03 is converted with main power source
The anode of device 02 is connected, and cathode is connected with the cathode of main power source converter 02；The electric current Ib of backup battery is flowed through by one
Current detection circuit 04 is detected, and obtains voltage signal Vb；Signal Vb is admitted to a current reference and feedback control circuit 05,
A voltage control signal Vc is obtained compared with the relative size of current reference according to Vb；Voltage control signal Vc is again into excessively one
A voltage-setting circuitry 06 obtains the voltage control signal Vs of an adjusting, and voltage control signal Vs controls main power source transformation again
The output voltage Vo of device 02, to control the size of battery charge Ib, entire loop is the control loop of a negative-feedback,
It can be by the way that the size of current reference be arranged come the size of feedback control charging current Ib.
If setting zero for current reference, it is not allow for charging current, it is actual the result is that Vo is fed back to road control
System is exactly equal to or the voltage of slightly below battery, although charging current is zero, main power source converter 02 still can be to load
01 provides electric current.Being appropriately arranged with charging current in safe range helps to maintain the electricity of backup battery 03, so as to urgent
There are enough electricity to use under state for unmanned plane.
Fig. 3 is a specific implementation circuit of the current detection circuit 04 in Fig. 2, in this circuit using a sampling
Current signal is amplified a fixed multiple by an operational amplifier to obtain the information of battery current by resistance, should
The polarity connection relationship of circuit should determine in this way: the current direction for flowing out battery cathode is the positive direction of electric current, positive direction
Electric current generates positive voltage signal Vb.It can also be using other current detecting sides such as Hall current sensors in specific implementation
Formula, but need to keep the polar relationship of above-mentioned voltage and electric current.
Fig. 4 is a kind of specific implementation circuit diagram of current reference and feedback control circuit 05 in Fig. 2, voltage shown in figure
Benchmark Vref represents the size of reference current, is admitted to the non-inverting input terminal of a pi regulator, and current signal Vb is admitted to PI
The inverting input terminal of adjuster, in such a way that PI adjuster is as feedback control, it is ensured that be equal to electric current to Ib floating and join
Examine value.The output of PI adjuster is Vc, will enter voltage-setting circuitry unit 06.
Fig. 5 is a kind of specific implementation circuit diagram of the voltage-setting circuitry 06 in Fig. 2, in this circuit Vc and ginseng
It examines voltage Vr and carries out linear superposition, obtain voltage control signal Vs.
When Vc is minimum value, Vs is equal to minimum value Vs_min, and when Vc is maximum value, Vs is equal to maximum value Vs_max.Vs_
Min and Vs_max is the voltage set value after adjusting, to be selected according to the characteristic of battery, and when Vs is maximum value, Vo is exported
Maximum cannot exceed the permitted ceiling voltage of battery, and when Vs is minimum value, Vo output is minimum, and to be lower than battery discharge may
The minimum voltage reached.Such as the backup battery packet constituted with ten section lithium batteries, ceiling voltage 42V, minimum voltage 37V,
Then the adjustable range of main power source can be set to 36~42V, and the output voltage of such main power source will change between 37~42V, such as
Fruit battery is continuously charged, and cell voltage can be raised to 42V, and at this moment the voltage of main power source is also raised to 42V.
Embodiment 2:
Fig. 6 is another embodiment of the utility model, low in the unmanned plane power supply system using fixed no-load voltage ratio converter
The voltage of pressure dc bus needs to be adjusted by ground power supply 08.In the embodiment in fig 6, backup battery 03 and fixation
The output of the main power source converter 02 of no-load voltage ratio is directly in parallel, and the electric current Ib of battery obtains current signal through overcurrent sensing circuit
Vb, Vb are compared with current reference signal, then obtain voltage control signal Vc into a pi regulator is crossed, and Vc is after adjusting
Voltage control signal Vs is obtained, the signal for the high voltage DC busses that voltage control signal Vs is obtained with voltage detection unit is folded
Add, is sent to ground power supply 08 together and the voltage of high voltage DC busses is adjusted.
The advantages of basic principles and main features and this programme of this programme have been shown and described above.The technology of the industry
Personnel are it should be appreciated that this programme is not restricted to the described embodiments, and the above embodiments and description only describe this
The principle of scheme, under the premise of not departing from this programme spirit and scope, this programme be will also have various changes and improvements, these changes
Change and improvement is both fallen within the scope of claimed this programme.This programme be claimed range by appended claims and its
Equivalent thereof.
Claims (7)
1. a kind of battery management system for being tethered at unmanned plane, which is characterized in that including main power source converter, backup battery, electric current
Detection circuit, current reference and feedback control circuit and voltage-setting circuitry；The main power source converter and the backup battery
It is connected in parallel to load both ends；The anode of the backup battery is connected with the anode of the main power source converter, the standby electricity
The cathode in pond is connected with the cathode of the main power source converter；The main power source converter can receive external voltage letter with one
Number control port, and output voltage Vo can be finely adjusted；The current detection circuit accesses to the backup battery
In circuit loop, and the electric current Ib for flowing through the backup battery is detected, obtains a voltage signal Vb；The voltage signal Vb is sent
Enter the current reference and feedback control circuit, the current reference and feedback control circuit are according to the voltage signal Vb and electricity
The relative size of stream benchmark relatively obtains voltage control signal a Vc, the voltage control signal Vc and is admitted to the voltage again
Circuit is set, and the voltage control signal Vs, the voltage control signal Vs for obtaining an adjusting access the main power source converter
Control port, and control the main power source converter output voltage Vo, and then control the size of the electric current Ib, constitute one
Negative feedback control loop.
2. a kind of battery management system for being tethered at unmanned plane as described in claim 1, which is characterized in that the current detecting electricity
Road includes the operational amplifier that current signal can be amplified fixed multiple by the sample resistance and one for obtaining the electric current Ib,
And the current direction for flowing out battery cathode is electric current positive direction, the voltage signal that the electric current of positive direction generates is Vb.
3. a kind of battery management system for being tethered at unmanned plane as described in claim 1, which is characterized in that the current detecting electricity
Hall current sensor also can be used in road, and the current direction for flowing out battery cathode is electric current positive direction, and the electric current of positive direction produces
Raw voltage signal is Vb.
4. a kind of battery management system for being tethered at unmanned plane as described in claim 1, which is characterized in that current reference and feedback
Control circuit includes a pi regulator, the reference electricity of the non-inverting input terminal access voltage reference Vref output of the pi regulator
Stream, the inverting input terminal of the pi regulator access the current signal Vb, and the output end of the pi regulator accesses the electricity
Pressure setting circuit, and output voltage control signal Vc.
5. a kind of battery management system for being tethered at unmanned plane as described in claim 1, which is characterized in that the voltage setting electricity
Lu Weiyi adder circuit, the voltage control signal Vc and a reference voltage Vr are accessed in the adder circuit, by line
After shape superposition, the voltage control signal Vs is exported by the output end of the adder circuit.
6. a kind of battery management system for being tethered at unmanned plane as described in claim 1, which is characterized in that the main power source transformation
Device is a DC/DC converter for having voltage stabilizing function, and energization input is connected to high voltage DC busses, and power supply output end connects
It is connected to low-voltage direct bus.
7. a kind of battery management system for being tethered at unmanned plane as claimed in claim 6, which is characterized in that the voltage setting electricity
The voltage control signal Vs of road output can also be transferred to a voltage feedback circuit, then be superimposed with the voltage signal of high voltage DC busses
Afterwards, ground power supply is fed back to, the voltage signal of the high voltage DC busses is detected by the voltage feedback circuit to be obtained.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821569648.0U CN208862598U (en) | 2018-09-26 | 2018-09-26 | A kind of battery management system being tethered at unmanned plane |
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| CN201821569648.0U CN208862598U (en) | 2018-09-26 | 2018-09-26 | A kind of battery management system being tethered at unmanned plane |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111645858A (en) * | 2020-06-03 | 2020-09-11 | 江苏和正特种装备有限公司 | Mooring module for unmanned gyroplane and unmanned gyroplane |
| CN114180094A (en) * | 2021-12-08 | 2022-03-15 | 中国兵器装备集团自动化研究所有限公司 | Power management device and method for tethered multi-rotor unmanned aerial vehicle |
| CN114865699A (en) * | 2022-05-25 | 2022-08-05 | 石河子大学 | Multi-motor energy feedback control method for flying inspection robot |
-
2018
- 2018-09-26 CN CN201821569648.0U patent/CN208862598U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111645858A (en) * | 2020-06-03 | 2020-09-11 | 江苏和正特种装备有限公司 | Mooring module for unmanned gyroplane and unmanned gyroplane |
| CN114180094A (en) * | 2021-12-08 | 2022-03-15 | 中国兵器装备集团自动化研究所有限公司 | Power management device and method for tethered multi-rotor unmanned aerial vehicle |
| CN114180094B (en) * | 2021-12-08 | 2024-02-09 | 中国兵器装备集团自动化研究所有限公司 | Tethered multi-rotor unmanned aerial vehicle power management device and method |
| CN114865699A (en) * | 2022-05-25 | 2022-08-05 | 石河子大学 | Multi-motor energy feedback control method for flying inspection robot |
| CN114865699B (en) * | 2022-05-25 | 2024-03-22 | 石河子大学 | Multi-motor energy feedback control method for flying inspection robot |
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