CN110034602A - A kind of unmanned plane power supply system - Google Patents
A kind of unmanned plane power supply system Download PDFInfo
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- CN110034602A CN110034602A CN201910292868.6A CN201910292868A CN110034602A CN 110034602 A CN110034602 A CN 110034602A CN 201910292868 A CN201910292868 A CN 201910292868A CN 110034602 A CN110034602 A CN 110034602A
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- Prior art keywords
- power supply
- rechargeable battery
- voltage
- auxiliary
- drive module
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- 239000004065 semiconductor Substances 0.000 claims description 16
- 239000003990 capacitor Substances 0.000 claims description 15
- 238000001514 detection method Methods 0.000 claims description 11
- 230000005611 electricity Effects 0.000 claims description 10
- 238000002955 isolation Methods 0.000 claims description 6
- 230000036581 peripheral resistance Effects 0.000 claims description 2
- 102220477327 Protein XRP2_Q31A_mutation Human genes 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 102220641747 Metalloproteinase inhibitor 1_Q32A_mutation Human genes 0.000 description 5
- 102220521890 THAP domain-containing protein 1_C10A_mutation Human genes 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 241000837181 Andina Species 0.000 description 1
- 102220614557 Calmodulin-3_R31A_mutation Human genes 0.000 description 1
- 102220522314 THAP domain-containing protein 1_R41A_mutation Human genes 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
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- 238000011084 recovery Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
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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
- H02J7/36—Arrangements using end-cell switching
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a kind of unmanned plane power supply systems, are related to unmanned plane field, can be powered when standby by auxiliary DC power supply when unmanned plane executes aerial mission by rechargeable battery powered.The present invention includes: rechargeable battery, auxiliary DC power supply, rechargeable battery drive module, voltage detecting and control circuit.The voltage value of voltage detecting and control circuit acquisition rechargeable battery and auxiliary DC power supply, voltage detecting and control circuit include voltage comparator, voltage comparator setting is arbitrarily lower than the value of auxiliary DC power supply standard output voltage as setting voltage, when assisting direct current 48V or 28V power supply output voltage to be higher than setting voltage, auxiliary DC power supply drive module controls auxiliary DC power supply power supply；When auxiliary DC power supply output voltage is lower than reference voltage, rechargeable battery drive module controls rechargeable battery powering load.The present invention is suitable for unmanned plane automatic cycle and executes the tasks such as data acquisition.
Description
Technical field
The present invention relates to unmanned plane field more particularly to a kind of unmanned plane power supply systems.
Background technique
High-power unmanned plane requires rechargeable battery power supply when executing aerial mission, while requiring to have used rule in battery again
It can charge in time after fixed energy, circularly execute aerial mission.Main electricity is large capacity rechargeable battery, auxiliary
Helping power supply is 48V 28V DC power supply etc..
It is to be charged by accessory power supply 48V or 28V DC power supply to unmanned plane, while generating an auxiliary when usually standby
12V DC power supply to fly control etc. other power supply for electrical equipment.High capacity cell and this 12V DC power supply pass through electronic switch
Circuit is to power supply for electrical equipment such as motors.Only high capacity cell is powered to UAV system after taking off.
In order to meet above-mentioned design needs, the present invention provides a kind of unmanned plane power supply systems, can be cut according to working condition
Change power supply.
Summary of the invention
Present invention offer more particularly to a kind of battery charger and battery hot plug control circuit, can hold in unmanned plane
By rechargeable battery powered when row aerial mission, powered when standby by auxiliary DC power supply.
In order to achieve the above objectives, the present invention adopts the following technical scheme:
A kind of unmanned plane power supply system, comprising: rechargeable battery, auxiliary DC power supply, rechargeable battery drive module, auxiliary are straight
Flow electric power driving module, voltage detecting and control circuit, charging circuit.
Charging circuit, rechargeable battery, rechargeable battery drive module, load, are sequentially connected；Auxiliary DC power supply generates
One 12V DC power supply, auxiliary DC power supply, 12V DC power supply, auxiliary DC power supply drive module, load, is sequentially connected.
Auxiliary DC power supply, auxiliary DC power supply drive module, rechargeable battery, rechargeable battery drive module, 12V are straight
The equal voltage detecting in galvanic electricity source and control circuit.Reference voltage is arranged in voltage detecting and control circuit, and acquire rechargeable battery and
The voltage value of auxiliary DC power supply, when rechargeable battery output voltage is higher than reference voltage, rechargeable battery drive module control
Rechargeable battery power supply processed；When rechargeable battery output voltage is lower than reference voltage, it is straight that accessory power supply drive module controls 12V
Galvanic electricity source powering load.
Further, voltage detecting and control circuit include: detection circuit, reference voltage adjust circuit, voltage comparator,
Several electronic switches.Detection circuit detects the output voltage of rechargeable battery and the output voltage of auxiliary DC power supply respectively, and
It is sent to voltage comparator；Reference voltage adjusts circuit and reference voltage is arranged, and is sent to voltage comparator.Voltage comparator
Output end connects the input terminal of electronic switch, and the output end of electronic switch is separately connected rechargeable battery drive module, auxiliary electricity
Signal control terminal in the drive module of source, the state of signal control terminal determine that load is supplied by rechargeable battery or auxiliary DC power supply
Electricity.
Further, base chip 555, functions as trigger when also setting up between voltage comparator and electronic switch
Or electronic switch.
Further, battery hot plug control circuit is arranged in rechargeable battery front end, and battery hot plug control circuit includes
Chip, electronic switch, peripheral resistance and capacitor are controlled, charging circuit connection controls the input terminal and signal control terminal of chip, with
And in electronic switch metal-oxide-semiconductor source electrode, metal-oxide-semiconductor drain electrode connection control chip output end.
Further, rechargeable battery drive module includes driving chip and several metal-oxide-semiconductors, and the input terminal of driving chip connects
Rechargeable battery is connect, several metal-oxide-semiconductors are in parallel in the same direction, separately constitute positive electronic switch and negative sense electronic switch.Positive electronic cutting
The drain electrode of Central Shanxi Plain metal-oxide-semiconductor is connected with rechargeable battery, and electric current flows to source electrode, MOS in drain electrode connection negative sense electronic switch from drain electrode
The source electrode of pipe, the output end of the drain electrode connection driving chip of metal-oxide-semiconductor in negative sense electronic switch.
Further, reverse-filling isolation circuit is also set up between 12V DC power supply and auxiliary DC power supply drive module, is prevented
Flowing backward isolation circuit includes control chip and MOSFET.
Further, when being less than 2A by electric current, reverse-filling isolation circuit is reduced to a diode, anode connection 12V
DC power supply, cathode connect auxiliary DC power supply drive module.
The beneficial effects of the present invention are:
As the reference voltage provided with the voltage value lower than rechargeable battery standard output voltage, rechargeable battery exports the present invention
When voltage is higher than reference voltage, rechargeable battery drive module controls rechargeable battery power supply；When rechargeable battery output voltage
When lower than reference voltage, accessory power supply drive module controls 12V DC power supply powering load, realizes unmanned plane and executes flight
By rechargeable battery powered when task, by the power demands of auxiliary DC power supply power supply when standby.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to needed in the embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for ability
For the those of ordinary skill of domain, without creative efforts, it can also be obtained according to these attached drawings other attached
Figure.
Fig. 1 is the principle of the present invention block diagram；
Fig. 2 is the circuit diagram of voltage detecting and control circuit；
Fig. 3 is the circuit diagram of charging circuit；
Fig. 4 is the circuit diagram of battery hot plug control circuit；
Fig. 5 is the circuit diagram of rechargeable battery drive module；
Fig. 6 is the circuit diagram of 12V DC power supply.
Specific embodiment
Technical solution in order to enable those skilled in the art to better understand the present invention, With reference to embodiment to this
Invention is described in further detail.
The embodiment of the present invention provides a kind of two dc power supply power supply system, as shown in Figure 1, comprising: rechargeable battery, auxiliary
DC power supply, auxiliary direct current 48V or 28V power supply, rechargeable battery drive module, auxiliary 12V DC power supply, reverse-filling
Diode, voltage detecting and control circuit, charging circuit, battery hot plug control circuit.
Charging circuit, battery hot plug control circuit, rechargeable battery, rechargeable battery drive module, load successively connect
It connects；Auxiliary direct current 48V or 28V power supply, 12V auxiliary DC power supply, reverse-filling diode, load are sequentially connected.
Voltage detecting and control circuit connection rechargeable battery, can fill auxiliary direct current 48V or 28V power supply power supply
Battery drive module, reverse-filling diode.
Wherein, reference voltage is arranged in voltage detecting and control circuit, and acquires rechargeable battery and auxiliary DC power supply
Voltage value, when rechargeable battery output voltage is higher than reference voltage, rechargeable battery drive module controls rechargeable battery and supplies
Electricity；When rechargeable battery output voltage is lower than reference voltage, accessory power supply drive module controls 12V DC power supply and supplies to load
Electricity.
Voltage detecting and control circuit are as shown in Figure 2: including twin voltage comparator, the road A comparator voltage detection circuit, B
Road comparator voltage detection circuit, the quasi- voltage-setting circuitry of A roadbed, the quasi- voltage-setting circuitry of B roadbed, when base chip.Twin voltage
Comparator using 193 chips, when base chip use 555 when base chip.
The road A comparator voltage+INA stitch detection circuit is sequentially connected by R1A, R1C, R2A, AGND to be formed, R1A electric current stream
The voltage for entering end is 48V 28V power supply (being power supply 48V or 28V on figure) voltage, and twin voltage ratio is connected between R1C and R2A
Compared with+INA the stitch of device.
The road B comparator voltage detection circuit is sequentially connected by R2C, R2D, R2B, AGND to be formed, and R2C electric current flows into the electricity at end
Pressure is rechargeable battery (being battery on figure) voltage, and+INB the stitch of twin voltage comparator is connected between R2D and R2B, and B compares on road
Device voltage-INA stitch detection circuit is sequentially connected by D1A/D1B, R4B, VD2, AGND to be formed.
The quasi- voltage-setting circuitry of A roadbed is sequentially connected and is formed by R3A, the anode of zener diode VD1, AGND.R3A electric current
The voltage for flowing into end is battery.Connection-INA stitch between R3A and VD1.
The quasi- voltage-setting circuitry of B roadbed is by the cathode of diode D1A/DIB, R4B, the anode of zener diode VD2, AGND
It is sequentially connected composition.The voltage of D1A anode is (power supply 48V or 28V network on figure).The voltage of D1B anode is (battery on figure
Network).Connection-INB stitch between R4B and VD2.
The electric current of R4B flows into end and is connected by diode D1A/D1B, anode connection power supply 48V or the 28V voltage of D1B,
The anode connection rechargeable battery voltage of D1A, provides duplicate supply.
The VCC stitch of U1 connects supply voltage VDD, connects filter capacitor CH1 between VDD and VCC stitch.U1 collects master
It is compared after supply voltage and cell voltage, the comparison result of+INA and-INA are exported by OUTA, the comparison of+INB and-INB
As a result it is exported by OUTB.
DIS the and TR stitch of base chip when OUTA connection.OUTB, R5B, R5A and TH stitch are sequentially connected.R5B and R5A and
MR stitch is all connected to VDD.R5A and R5B is pull-up resistor.
DIS stitch, RA1, AGND are sequentially connected；VC stitch, CA1, AGND are sequentially connected.
When base chip U2 Vo pin connect RA2, RA2 connection RA5, RA5 are grounded.RA3, RA3 are connected between RA2 and RA5
It is connected with the pole G of metal-oxide-semiconductor QA, the pole S ground connection, the pole D passes through RA4 connection+INA.
RA3, RA4, QA form electronic switch, and when OUTA exports low level, when the 3 foot Vo of U2 export high level, QA will
Conducting ,+INA are further decreased, will be well below-INA, even if at this moment 28 supply voltages shake, as long as maximum voltage is not
More than a certain setting value, OUTA will be locked in low level.Play the role of anti-oscillating.The pole G of OUTA, RB2, QB are sequentially connected,
The pole S of QB is grounded, and the pole D passes through RB3 connection SHDN1 signal.
RB2, RB3, QB form electronic switch, and when OUTA exports low level, QB cut-off, SHDN exports high level, at this time
Open the electronic switch of battery current supply circuit.
The pole G of OUTB, RC1, QC are sequentially connected, and the pole the S ground connection of QC, the pole D connects U2A3 by RC2.
RC1, RC2, QC form electronic switch, and when OUTB exports high level, QC conducting, U23A will be overturn as low level,
QA cut-off, to the states thereof of QA.+ INA will be significantly larger than-INA.
Charging circuit as shown in figure 3, input protection circuit is made of RA1/CA1/DD1, RA1/CA1 first join string again with DD1
Parallel connection, the end Vin is auxiliary direct current 48V or 28V supply voltage on figure, is charge power supply input terminal herein, one end of RA1 and
The cathode of DD1 is connected to the end input terminal Vin, and the other end of RA1 and one end of CA1 connect, the other end of CA1 and the anode of DD1
It is presently connected to GND.
C1 and R1A composes in parallel input filter circuit, and the one end LC1 and R1A is connected to the end Vin, while being connected to charging control
The other end of the DCIN foot of coremaking piece U1, LC1 and R1A are connected to AGND.
LED1 and RL composition input circuit instruction, the anode of LED1 are connected to the end Vin, and the anode of LED1 is connected to the one of RL
End, the other end of RL are connected to the CHRG foot of charge controlling chip U1, and the end D of MOSFET pipe Q1 is connected to the end input terminal Vin,
The end G of MOSFET pipe Q1 is connected to the INFET foot of charge controlling chip U1, and the end G of MOSFET pipe Q1 is connected to charge control core
The CLP foot of piece U1, there are three the devices of CLP connection, and R3 is input over-current detection resistance, and the one end R3 is connected to charge controlling chip
The CLP foot of U1, the R3 other end are connected to Q2D network-side, and the one end C4A is connected to the CLP foot of charge controlling chip U1, and C4A is another
End is connected to AGND, and the one end C4 is connected to the CLP foot of charge controlling chip U1, and the C4 other end is connected to charge controlling chip U1's
CLN foot, the one end C4B are connected to the CLN foot of charge controlling chip U1, and the C4B other end is connected to AGND, and the one end R4 is connected to charging
The CLN foot of chip U1, R4 are controlled, the other end is connected to Q2D network-side.
The one end R4 is connected to the SHND foot of charge controlling chip U1, and the R4 other end is connected to Vin.
The one end R5P is connected to the GND foot of charge controlling chip U1, and the R5P other end is connected to Vcc.
The one end R8P is connected to the ICL foot of charge controlling chip U1, and the R8P other end is connected to Vcc5V.
R1 and C2 is composed in series compensation network, and one end of R1 is connected to the ITH foot of charge controlling chip U1, the other end of C2
It is connected to AGND.
R2 and R2A series connection composes in parallel compensation network with C3 again, and the one end R2/C3 is connected to the PROG of charge controlling chip U1
The other end of foot, R2/C3 is connected to AGND.
C21 is the input capacitance of three terminal regulator, and the one end C21 is connected to the input terminal of U2, while being connected to Vin, and C21 is another
One end is connected to AGND.
C22 is the output capacitance of three terminal regulator, and the one end C22 is connected to the output end of U2, while being connected to Vcc, and C22 is another
One end is connected to AGND.
R7A/R7/R8/R8B forms output voltage feed circuit, and R7A/R7/C7A forms compensation circuit, and R7A/R7 first connects
In parallel with C7A again, one end of R7A/C7A is connected to the FBDIV foot of charge controlling chip U1, and the other end of R7A/C7A is connected to
The VFB foot of charge controlling chip U1, while one end of R7/R8 is also connected to the VFB foot of charge controlling chip U1, R8B's is another
End is connected to AGND.
The one end R20 is connected to the BOOST foot of charge controlling chip U1, and the other end of R20 is connected to BOOST network.BOOST
Three devices are connected to the network, are the cathode of Schottky diode D3 respectively, one end of capacitor C5/C5B, Schottky diode D3's
Anode is connected to the INTVDD foot of charge controlling chip U1.The other end of capacitor C5/C5B is connected to the SW of charge controlling chip U1
Foot.Being connected to the device of this SW network simultaneously, there are also the pole S of MOSFET pipe Q2, the pole D of MOSFET pipe Q3, Schottky diodes
The cathode of D2, one end of inductance L1, the pole D of MOSFET pipe Q2 are connected to Q2D network, the pole S of MOSFET pipe Q3 and Schottky two
The anode of pole pipe D2 is connected to GND network together.
The one end R19 is connected to the TGATE foot of charge controlling chip U1, and the other end of R19 is connected to the G of MOSFET pipe Q2
Pole.
The one end R16 is connected to the BOOST foot of charge controlling chip U1, and the other end of R16 is connected to the G of MOSFET pipe Q2
Pole.
The one end C6 is connected to the INTVDD foot of charge controlling chip U1, and the other end of C6 is connected to AGND.
The one end R5 is connected to the CSP foot of charge controlling chip U1, and the other end of R5 is connected to CSP network.CSP network connection
There are 4 devices, is one end the other end/precision sampling resistor R10/ capacitor C9/C9A of inductance L1 respectively.Capacitor C9A's is another
End is connected to AGND network.The other end of capacitor C9B is connected to AGND network.
The one end R6 is connected to the CSN foot of charge controlling chip U1, and the other end of R6 is connected to CSN network.CSN network connection
Have 11 devices, be respectively charge controlling chip U1 CSN foot and capacitor E5/E6/C10/C10A/E3/E4/DD2/R9 one
End/precision sampling resistor R10/ capacitor C9 other end.
The other end of capacitor E5/E6/C10/C10A/E3/E4/DD2 is connected to GND network.
The one end capacitor E1/E2 is connected to Q2D network.The other end of capacitor E1/E2 is connected to GND network.
Battery hot plug control circuit is as shown in Figure 4: including controlling chip U6 and MOSFETQ6.BATB is connected to the network U6's
SHDN/IN/SOURCE pin is also connected with the pole S of Q6 and the anode of pressure stabilizing DQ6, the OUT pipe of the pole the D connection control chip U6 of Q6
Foot, while one end of C61 is connected, electric current flows to the pole D from the pole S.One end of C61 is connected to AGND network.The VSS pin of U6 connects
The anode of RD6 and DR6, the cathode of DR6 and the other end of RD6 are connected to AGND.The grid G pole of the cathode connection Q6 of DQ61.
DR6 guarantees that the voltage at the both ends R41A is reliably locked in 0.7V hereinafter, improving the reliability of chip U43A.
Rechargeable battery drive module is as shown in Figure 5:
For battery as input terminal, one end of F31 is connected to BATB network, the cathode connection of the other end and VD31, the anode of VD31
It is connect with VD32 anode, VD32 cathode is connected to GND.In parallel with R33 again, one end R33 after MOSFETQ31A is in parallel with Q31B
It is connected to the pole D of Q31A/Q31B, while being connected to BATB network, the R33 other end is connected to the pole S of Q31A/Q31B, while with
Control SOURCE foot/zener diode VD34/VD35/VD36/VD37 anode connection of chip U31A, zener diode
The GATE foot of the cathode connection control chip U31A of VD34/VD35/VD36/VD37, while the pole control electrode G with Q31A/Q31B
It connects, the IN foot of control chip U31A is also connected to BATB network.The VSS foot of control chip U31A is also connected to R31's
One end, and connect with the anode of VDR31, while being connect with one end of C31.The other end of R31 and the cathode of VDR31 connect, and
It is connect with AGND.The OUT foot of control chip U31A is also connected to the other end of C31, and connects with the pole D of Q32A/Q32B,
Vin synthesizes the input port of load.
The IN stitch of driving chip U31A connects rechargeable battery, and when SHDN is higher than 0.6V, control electronic switch is opened.
Metal-oxide-semiconductor Q31A and Q31B are in parallel, form positive electronic switch；Metal-oxide-semiconductor Q32A and Q32B are in parallel, form negative sense electronics
Switch.
Q31A is connected with the pole D of Q31B with rechargeable battery, and electric current flows to the pole S from the pole D, and Q31A is connected with the pole S of Q31B
The pole D of the pole S of Q32A and Q32B, Q32A and Q32B connect the OUT stitch of U31A, and the electric current of Q32A and Q32B flow to D from the pole S
Pole.
The input protection circuit of F31, VD31, D32 composition U31A；RS, VD33 are used to improve the reliability of U31A； C31
It is delay startup capacitor；R31 is common end resistance, and VDR31 guarantees that R31A both end voltage is reliably locked in 0.7V hereinafter, improving
The reliability of chip U31A.
Assist 12V DC power supply as shown in Figure 6: auxiliary direct current 48V or 28V power input controls chip U41, and U41 is defeated
12V DC voltage out.
VD41 anode connects auxiliary direct current 48V or 28V power supply, and VD41 cathode connects C41/C42, another termination of C41/C42
AGND, VD41 cathode meet R41, and R42 meets R41, another termination AGND of R42, and VD41 cathode connects 2 feet of U41, and R42 meets R41, and with
3 feet of U41 connect,
One end of C45 and 8 feet of U41 connect, while connecting with the cathode of one end of L41 and VD42, the other end connection of L41
Anode connection AGND, another termination R46 of R45 of R45/C46/C47/VD43, VD42, while being connect with 3 feet of U41, R46's
Another termination Vin of another termination AGND of another termination AGND, C46/C47, VD43 are closed, i.e. load input terminal.
One end of R44 and 6 feet of U41 connect, while connecting with C44, another termination AGND of C44, another termination of R44
Another termination AGND of C43, C43.
The input circuit of VD41, C41, C42 composition U41;The logic control circuit of R41, R42 composition U41;R43 is U41
Frequency set resistance;The external compensation circuit of R44, C43, C44 composition U41;C45 is pump capacitor；VD42 is Schottky two
Pole pipe；L41 is power inductance；R45, R46 are sample resistances；C46, C47 are output capacitance filtering；VD43 is two poles of fast recovery
Pipe, cell voltage flows backward 12V DC power supply after preventing the electronic switch of battery from connecting.
The beneficial effects of the present invention are:
As the reference voltage provided with the voltage value lower than rechargeable battery standard output voltage, rechargeable battery exports the present invention
When voltage is higher than reference voltage, rechargeable battery drive module controls rechargeable battery power supply；When rechargeable battery output voltage
When lower than reference voltage, accessory power supply drive module controls 12V DC power supply powering load, realizes unmanned plane and executes flight
By rechargeable battery powered when task, by the power demands of auxiliary DC power supply power supply when standby；
The case where auxiliary DC power supply flows backward to rechargeable battery is avoided, rechargeable battery shake is effectively prevented and load is made
At influence, improve the reliability of system；
Time base circuit realizes the voltage detecting and control circuit with lag function, than the electricity with lag function using profession
Press detection circuit cost much lower, and hysteresis voltage can arbitrarily be set, flexibility is very big, and reliability is very high.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by those familiar with the art, all answers
It is included within the scope of the present invention.Therefore, protection scope of the present invention should be subject to the protection scope in claims.
Claims (7)
1. a kind of unmanned plane power supply system characterized by comprising rechargeable battery, auxiliary DC power supply, rechargeable battery drive
Dynamic model block, auxiliary DC power supply drive module, voltage detecting and control circuit, charging circuit；
Charging circuit, rechargeable battery, rechargeable battery drive module, load, are sequentially connected；
Auxiliary DC power supply generates a 12V DC power supply, auxiliary DC power supply, 12V DC power supply, auxiliary DC power supply driving
Module, load, are sequentially connected；
Auxiliary DC power supply, auxiliary DC power supply drive module, rechargeable battery, rechargeable battery drive module, 12V DC electricity
Source is all connected with voltage detecting and control circuit；
Reference voltage is arranged in voltage detecting and control circuit, and acquires the voltage value of rechargeable battery and auxiliary DC power supply, when
When rechargeable battery output voltage is higher than reference voltage, rechargeable battery drive module controls rechargeable battery power supply；When can fill
When electric cell output voltage is lower than reference voltage, accessory power supply drive module controls 12V DC power supply powering load.
2. system according to claim 1, which is characterized in that the voltage detecting and control circuit include: detection circuit,
Reference voltage adjusts circuit, voltage comparator, several electronic switches,
Detection circuit detects the output voltage of the rechargeable battery and the output voltage of the auxiliary DC power supply respectively, and passes
It send to voltage comparator；
Reference voltage adjusts circuit and the reference voltage is arranged, and is sent to the voltage comparator；
The input terminal of the output end connection electronic switch of voltage comparator, the output end of electronic switch is separately connected described chargeable
Signal control terminal in battery drive module, accessory power supply drive module, the state of signal control terminal determine load by it is described can
Rechargeable battery or auxiliary DC power supply power supply.
3. system according to claim 2, which is characterized in that also set between the voltage comparator and the electronic switch
Base chip 555 when setting.
4. system according to claim 1-3, which is characterized in that the rechargeable battery front end setting battery heat
Control circuit is plugged, battery hot plug control circuit includes control chip, electronic switch, peripheral resistance and capacitor, the charging
Circuit connection controls the source electrode of metal-oxide-semiconductor in the input terminal and signal control terminal and electronic switch of chip, and the drain electrode of metal-oxide-semiconductor connects
Connect the output end of control chip.
5. system according to claim 1-4, which is characterized in that the rechargeable battery drive module includes driving
The input terminal of dynamic chip and several metal-oxide-semiconductors, driving chip connects the rechargeable battery, and several metal-oxide-semiconductors are in parallel in the same direction, respectively group
At positive electronic switch and negative sense electronic switch,
The drain electrode of metal-oxide-semiconductor is connected with the rechargeable battery in positive electronic switch, and electric current flows to source electrode, drain electrode connection from drain electrode
The source electrode of metal-oxide-semiconductor in negative sense electronic switch, the output end of the drain electrode connection driving chip of metal-oxide-semiconductor in negative sense electronic switch.
6. system according to claim 1-5, which is characterized in that the 12V DC power supply and the auxiliary are straight
Reverse-filling isolation circuit is also set up between stream electric power driving module, reverse-filling isolation circuit includes control chip and MOSFET.
7. system according to claim 6, which is characterized in that be less than 2A, the reverse-filling isolation circuit when passing through electric current
It is reduced to a diode, anode connects the 12V DC power supply, and cathode connects the auxiliary DC power supply and drives mould
Block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910292868.6A CN110034602A (en) | 2019-04-12 | 2019-04-12 | A kind of unmanned plane power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910292868.6A CN110034602A (en) | 2019-04-12 | 2019-04-12 | A kind of unmanned plane power supply system |
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| Publication Number | Publication Date |
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| CN110034602A true CN110034602A (en) | 2019-07-19 |
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| CN201910292868.6A Pending CN110034602A (en) | 2019-04-12 | 2019-04-12 | A kind of unmanned plane power supply system |
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