CN108092395A - A kind of backup battery incision and floating charge control device - Google Patents
A kind of backup battery incision and floating charge control device Download PDFInfo
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- CN108092395A CN108092395A CN201711169482.3A CN201711169482A CN108092395A CN 108092395 A CN108092395 A CN 108092395A CN 201711169482 A CN201711169482 A CN 201711169482A CN 108092395 A CN108092395 A CN 108092395A
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- 239000004065 semiconductor Substances 0.000 claims description 52
- 230000029865 regulation of blood pressure Effects 0.000 claims description 16
- 238000005070 sampling Methods 0.000 claims description 16
- 230000005611 electricity Effects 0.000 claims description 11
- 230000009514 concussion Effects 0.000 claims description 3
- 230000009977 dual effect Effects 0.000 claims description 3
- 230000002159 abnormal effect Effects 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 230000002093 peripheral effect Effects 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 2
- 238000013499 data model Methods 0.000 description 2
- 238000002407 reforming Methods 0.000 description 2
- 101001068634 Homo sapiens Protein PRRC2A Proteins 0.000 description 1
- 101000908580 Homo sapiens Spliceosome RNA helicase DDX39B Proteins 0.000 description 1
- 102100033954 Protein PRRC2A Human genes 0.000 description 1
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- 239000000686 essence Substances 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
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Classifications
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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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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
-
- 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
-
- H02J7/0022—
-
- 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
- H02J7/007—Regulation of charging or discharging current or voltage
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention provides a kind of incision of backup battery and floating charge control devices, mounted on being tethered on unmanned plane, including a backup battery box and an airborne power supply, backup battery and backup battery ConvertBox are installed in the backup battery box, one backup battery switch boards in the backup battery ConvertBox are installed, a backup battery switching circuit and a backup battery floating charge control circuit are provided in the backup battery switch boards.Compared with prior art, the present invention can improve device efficiency, reduce power consumption, heat loss, voltage loss and reduce pcb board area；And power conversion efficiency of the present invention may be up to 96%; it is high with IC integrated levels; it is small, the advantages that peripheral circuit is simple, power consumption can be effectively reduced and realize input over-and under-voltage lock, the functions such as output over-voltage protection, over-temperature protection and overcurrent protection.
Description
Technical field
The present invention relates to be tethered at unmanned plane power supply technique, and in particular to be a kind of for being tethered at the backup battery of unmanned plane
Incision and floating charge control device.
Background technology
It is tethered at unmanned aerial vehicle end power supply to power to UAV system is tethered at by being tethered at cable, makes unmanned plane outstanding for a long time
It is parked in the air, so as to complete aerial work.When being tethered at UAV system ground surface end abnormity of power supply, pass through parallel connection power supply and battery
Design, realize redundancy, system can switch at once backup battery power supply, guarantee be tethered at unmanned plane safe flight.
The design of traditional redundant power system generally use isolating diode and discrete device realizes, circuit design compared with
Complexity, and since the forward voltage drop of diode is bigger, in the case of large load current, equipment power dissipation, which becomes, mainly asks
Topic.Therefore there are power consumption is big, voltage loss is big, circuit is complicated, fever is serious, it is big etc. to occupy volume for traditional redundant power system
Problem.
The content of the invention
For this purpose, high, small it is an object of the invention to provide a kind of power conversion efficiency, peripheral circuit is simple, can have
Reduction power consumption in effect ground is tethered at the incision of unmanned plane backup battery and floating charge control device.
The purpose of the present invention is what is be achieved through the following technical solutions.
A kind of incision of backup battery and floating charge control device, mounted on being tethered on unmanned plane, including a backup battery box and
One airborne power supply is equipped with backup battery and backup battery ConvertBox, the backup battery ConvertBox in the backup battery box
In a backup battery switch boards are installed, be provided in the backup battery switch boards backup battery switching circuit and a standby electricity
Pond floating charge control circuit.
Preferably, the backup battery switching circuit exports for dual power supply, including ideal diode controller U1, ideal
Diode control U2, N-channel MOS pipe Q1 and N-channel MOS pipe Q2；
The ideal diode controller U1 is used for the output that metal-oxide-semiconductor Q1 is controlled to realize airborne power supply DC25V, preferable two poles
The source electrode incorporating mill load power input anode that the input stage IN of tube controller U1 is connected to metal-oxide-semiconductor Q1 is connected, and output stage OUT is connected to
The drain electrode of metal-oxide-semiconductor Q1 is simultaneously connected with unmanned plane load input anode is tethered at, and control pole GATE is connected to the grid of metal-oxide-semiconductor Q1；
The ideal diode controller U2 is used for the output that metal-oxide-semiconductor Q2 is controlled to realize backup battery power, preferable two poles
The input stage IN of tube controller U2 is connected to the source electrode of metal-oxide-semiconductor Q2 and is connected with the power input anode of backup battery, output stage OUT
It is connected to the drain electrode of metal-oxide-semiconductor Q2 and is connected with unmanned plane load input anode is tethered at, control pole GATE is connected to the grid of metal-oxide-semiconductor Q2；
Wherein be tethered at unmanned plane load power by DC25V DC power supplies, when DC power supply occur extremely cause to power it is different
Chang Shi, ideal diode controller U1 drive metal-oxide-semiconductor Q1 to the state that complete switches off, and ideal diode controller U2 drives rapidly
Metal-oxide-semiconductor Q2 turn on, be tethered at unmanned plane be supported in the time less than 500nS be switched to backup battery power supply, with realize power supply without
Concussion takes over seamlessly.
Preferably, when be tethered at unmanned plane load by DC25V DC power supplies power supply power on when, electric current flow through metal-oxide-semiconductor Q1 and
Ideal diode controller U1 detects forward drop on IN the and OUT pins of preferable diode control U1 at this time, reason
Think that diode control U1 then drives GATE pins that forward voltage drop is made to maintain 25mV；Increase when being tethered at unmanned plane load current,
When so that the forward voltage drop is more than 25mV, metal-oxide-semiconductor Q1 raster data models make forward voltage drop drop to 25mV to fully on；When being tethered at nothing
Man-machine load current reduces, and when causing forward voltage drop less than 25m, metal-oxide-semiconductor Q1 grids are driven to low level, to maintain positive pressure
It is reduced to 25mV；When being tethered at, unmanned plane load current is reversed, and the voltage ratio -25mV of IN to the OUT of ideal diode controller U1
More negative, then ideal diode controller U1 drags down metal-oxide-semiconductor grid, and metal-oxide-semiconductor Q1 is turned off in the time less than 500nS.
Preferably, ideal diode the controller U1 and U2 are LTC4357 chips；N-channel MOS pipe Q1 and Q2 are
BSC014N06S chips.
Preferably, the backup battery floating charge control circuit is connected between backup battery and airborne power supply, for rear
Standby battery carries out floating charge control, and charging current to be kept to be maintained within 2A, which includes having regulation of blood pressure
Device U3, power inductance L1, input capacitance C1, output capacitance C2, resistance R1, R2, R2, R3, R4, R5；Wherein, having regulation of blood pressure
The input terminal VIN of device U3 is connected by ten 4.7UF/100V capacitances in parallel with the output terminal of airborne power supply DC25V；Output terminal
VOUT is connected by the capacitance of ten 10UF/50V in parallel and the charging end of sampling resistor R1 and backup battery, pin ISP,
Both ends of the ISN respectively with sampling resistor R1 are connected, and IMON, LGH and sampling resistor R4, R5 are connected, by adjust sampling resistor R1,
R4, R5 can control the charging current to backup battery；EAIN pins are connected to output terminal VOUT by sampling resistor R2, R3, pass through
The resistance value of adjusting sampling resistor R2 and R3 can set the charging voltage to backup battery.
Preferably, the having regulation of blood pressure device U3 uses input voltage as 8-60V, output voltage 10-50V, output
Power is the PI3740-00-LGIZ chips of 50-140W.
Preferably, it is connected with power inductance L1 between VS1 the and VS2 feet of the having regulation of blood pressure device U3.
Preferably, a power output interface is provided on the backup battery ConvertBox, the backup battery switch boards are led to
Cross the control panel that power output interface connection is tethered at unmanned plane.
Preferably, the battery interface of a connection backup battery switch boards is provided on the backup battery ConvertBox, it is described
The backup battery connector of a connection backup battery, the backup battery connector and the battery interface are provided on backup battery box
Connection.
Preferably, a power input interface is provided on the backup battery box, the backup battery switch boards pass through this
Power input interface is connected with the airborne power supply, and the airborne power supply is by being tethered at cable and being tethered at unmanned aerial vehicle end power supply
Connection.
Backup battery incision provided by the invention and floating charge control device are by backup battery switching circuit, in airborne power supply
When breaking down to be tethered at unmanned plane power supply or is short-circuit, system can be rapidly switched off, and can be minimum by reverse current moment rapidly
Change, protect circuit safety, while realize the smooth electric current transmission that another access is routed to from one, and without reforming phenomena.Separately
Outside, backup battery floating charge control circuit of the present invention sets the charging current for being less than or equal to 2A by DC-DC having regulation of blood pressure device,
When equipment normally powers on, floating charge control can be realized to backup battery at any time, and charging current gradually subtracts with battery saturation degree
It is small, to ensure the trouble free service of equipment.Compared with prior art, the present invention can improve device efficiency, reduce power consumption, heat disappears
Consumption, voltage loss simultaneously reduce pcb board area；And power conversion efficiency of the present invention may be up to 96%, and it is high with IC integrated levels,
It is small, the advantages that peripheral circuit is simple, power consumption can be effectively reduced and realize input over-and under-voltage lock, output overvoltage
The functions such as protection, over-temperature protection and overcurrent protection.
Description of the drawings
Fig. 1 is the structure diagram of backup battery of the present invention incision and floating charge control device；
Fig. 2 is cut for backup battery of the present invention and floating charge control principle block diagram；
Fig. 3 is backup battery switching circuit schematic diagram of the present invention；
Fig. 4 is backup battery floating charge control circuit schematic diagram of the present invention.
Identifier declaration in figure：Battery interface 1, power output interface 2, backup battery connector 3, power input interface 4, standby
Battery ConvertBox 5, backup battery box.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, it is right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Refering to Figure 1, Fig. 1 is the structure diagram of backup battery of the present invention incision and floating charge control device.This reality
It applies example and provides a kind of incision of backup battery and floating charge control device, which is mounted on and is tethered on unmanned plane, includes one
A backup battery box 6 and an airborne power supply (not shown).Airborne power supply is by being tethered at cable and being tethered at unmanned aerial vehicle end electricity
Source connects, and ground surface end power supply is realized by airborne power supply to being tethered at unmanned plane load supplying.
Several backup batteries are wherein installed (in Fig. 2 after 2600mAH backup batteries 1 and 2600mAH in backup battery box 6
Standby battery 2) and a backup battery ConvertBox 5,6 bottom of backup battery box is provided with power input interface 4, defeated by the power supply
Incoming interface 4 is connected (see VIN power input interfaces connection airborne power supply electric power system in Fig. 2) with airborne power supply.
Installation is set in the backup battery switch boards there are one backup battery switch boards (see Fig. 2) in backup battery ConvertBox 5
Backup battery switching circuit and a backup battery floating charge control circuit there are one putting.Electricity is provided on backup battery ConvertBox 5
Pond interface 1 and power output interface 2, the backup battery connector 3 that connection backup battery is provided on backup battery box 6 are (electric in Fig. 2
Pond BAT1 interfaces, battery float interface 1, battery BAT2 interfaces and battery float interface 2).
Backup battery switching circuit in backup battery switch boards is tethered at unmanned plane by the connection of power output interface 2 and loads
Control panel (connecting load terminal see VOUT power output interfaces 1 in Fig. 2 and VOUT power output interfaces 1).
Airborne power supply is connected with power input interface 4, and power input interface 4 is accessed by VIN power input interfaces in Fig. 2
Backup battery switch boards carry out floating charge control by the backup battery floating charge control circuit in backup battery switch boards, and by electricity
Pond floating charge interface 1 and battery float interface 2 are connected to backup battery connector 3, and standby electricity is connected to by backup battery connector 3
Pond carries out floating charge control to backup battery.
As shown in figure 3, Fig. 3 is backup battery switching circuit schematic diagram of the present invention.The present embodiment backup battery switching circuit
It is exported for dual power supply, by two ideal diode controllers two N-channel MOS pipes is controlled to realize the defeated of two-way power supply respectively
Go out.
Wherein the switching circuit includes an ideal diode controller U1, an ideal diode controller U2, a N
A channel MOS tube Q1 and N-channel MOS pipe Q2.Ideal diode controller U1 and U2 in the present embodiment are LTC4357 cores
Piece；N-channel MOS pipe Q1 and Q2 are BSC014N06S chips.
The output of power supply all the way is：Ideal diode controller U1 is by controlling metal-oxide-semiconductor Q1 to realize airborne power supply DC25V's
Output, the source electrode of input stage IN connection metal-oxide-semiconductors Q1, the input anode 25VIN that incorporating mill carries power supply are connected；Its output stage OUT
The drain electrode of metal-oxide-semiconductor Q1 is connected to, and is connected with unmanned plane load input anode (power supply output cathode) is tethered at；Its control pole GATE connects
To the grid of metal-oxide-semiconductor Q1.
Ideal diode controller U1 in the present embodiment is LTC4357 chips, and LTC4357 chips can be easily right
Power supply carries out OR operation, to improve overall system reliability.In the application of diode "or", LTC4357 is used to control metal-oxide-semiconductor
The voltage at the forward drop at both ends, source electrode and drain electrode both ends is monitored by IN and OUT pins, the driving metal-oxide-semiconductor control of GATE pins
Its work, and the source electrode of metal-oxide-semiconductor and drain electrode can be used as the anode and cathode of ideal diode.
When being tethered at unmanned plane load and being powered on by the power supply of DC25V DC power supplies, electric current flows through metal-oxide-semiconductor Q1 and preferable two poles
Tube controller U1 detects forward drop, ideal diode on IN the and OUT pins of preferable diode control U1 at this time
Controller U1 then drives GATE pins that forward voltage drop is made to maintain 25mV；When being tethered at the increase of unmanned plane load current, make positive pressure
When drop is more than 25mV, metal-oxide-semiconductor Q1 raster data models make forward voltage drop drop to 25mV to fully on；It is loaded when being tethered at unmanned plane
Electric current reduce, cause forward voltage drop be less than 25m when, metal-oxide-semiconductor Q1 grids are driven to low level, using maintain forward voltage drop as
25mV；When being tethered at, unmanned plane load current is reversed, and the voltage ratio -25mV of IN to the OUT of ideal diode controller U1 is more negative,
Then ideal diode controller U1 drags down metal-oxide-semiconductor grid, and metal-oxide-semiconductor Q1 is turned off in the time less than 500nS.
The output of another way power supply is：Ideal diode controller U2 is by controlling metal-oxide-semiconductor Q2 to realize backup battery power
Output, the input stage IN of ideal diode controller U2 be connected to the source electrode of metal-oxide-semiconductor Q2 and and backup battery power input just
Extremely it is connected, output stage OUT is connected to the drain electrode of metal-oxide-semiconductor Q2 and is connected with unmanned plane load input anode is tethered at, and control pole GATE connects
To the grid of metal-oxide-semiconductor Q2.
Wherein be tethered at unmanned plane load power by DC25V DC power supplies, when DC power supply occur extremely cause to power it is different
Chang Shi, ideal diode controller U1 drive metal-oxide-semiconductor Q1 to the state that complete switches off, and ideal diode controller U2 drives rapidly
Metal-oxide-semiconductor Q2 turn on, be tethered at unmanned plane be supported in the time less than 500nS be switched to backup battery power supply, with realize power supply without
Concussion takes over seamlessly.
Power supply redundancy is done using the scheme of LTC4357 chip controls metal-oxide-semiconductors in the present embodiment, due to the low conducting of metal-oxide-semiconductor
Internal resistance, therefore the loss of pressure drop is greatly reduced, and the diode inside metal-oxide-semiconductor, it is also act against the mutation of reverse current
Impact to redundant circuit.
The present invention realizes backup battery handoff functionality by LTC4357 chips, and the forward direction of metal-oxide-semiconductor is controlled by LTC4357
The smooth electric current transmission that another access is routed to from one, no reforming phenomena are realized in pressure drop；When circuit failure or short circuit
When, the system of rapidly switching off can rapidly minimize reverse current moment, protect circuit safety.Compared with traditional switching circuit,
The present invention can provide a relatively low loss access, and less device makes circuit design also simpler；In high-power applications, energy
Device efficiency is enough improved, reduce power consumption, heat loss, voltage loss and reduces pcb board area.
As shown in figure 4, Fig. 4 is backup battery floating charge control circuit schematic diagram of the present invention.The present embodiment backup battery floating charge
Control circuit is connected between backup battery and airborne power supply, for carrying out floating charge control to backup battery, to keep the electricity that charges
Stream is maintained within 2A.
Wherein the present embodiment floating charge control circuit includes having regulation of blood pressure device U3, power inductance L1, input capacitance C1,
Output capacitance C2, resistance R1, R2, R2, R3, R4, R5.
Having regulation of blood pressure device U3 uses input voltage as 8-60V, output voltage 10-50V, output power 50-
The PI3740-00-LGIZ chips of 140W, the soc conversion efficiency reach as high as 96%, can realize that input over-and under-voltage locks, is defeated
Go out the functions such as overvoltage protection, over-temperature protection and overcurrent protection.
The input terminal VIN of having regulation of blood pressure device U3 passes through ten 4.7UF/100V capacitances and airborne power supply in parallel
The output terminal connection of DC25V；The capacitance and sampling resistor R1 and standby electricity that output terminal VOUT passes through ten 10UF/50V in parallel
The charging end connection in pond.
Both ends of pin ISP, the ISN of having regulation of blood pressure device U3 respectively with sampling resistor R1 are connected, and IMON, LGH are with adopting
Sample resistance R4, R5 are connected, and charging current to backup battery is can control by adjusting sampling resistor R1, R4, R5.
The EAIN pins of having regulation of blood pressure device U3 are connected to output terminal VOUT by sampling resistor R2, R3, are adopted by adjusting
The resistance value of sample resistance R2 and R3 can set the charging voltage to backup battery.
Power inductance L1 is connected between VS1 the and VS2 pins of having regulation of blood pressure device U3.
It should be noted that ground surface end power supply is passed to airborne electricity by the present embodiment ground surface end electric power system by being tethered at cable
Source is powered to load terminal, and airborne power supply carries out floating charge control by above-mentioned having regulation of blood pressure device U3 to backup battery simultaneously
System, charging current are maintained within 2A, and charging current can be gradually reduced with battery saturation degree, and lower full electricity is 0, so as to ensure equipment
Trouble free service.When ground surface end electric power system occurs abnormal, backup battery is switched to by backup battery switching circuit rapidly
Power supply ensures unmanned plane safe flight.
The present invention realizes that backup battery floating charge controls by PI3740 chips, and power conversion efficiency reaches as high as 96%,
And IC integrated levels of the present invention are high, and small, peripheral circuit is simple, can be effectively reduced power consumption, can realize input over-and under-voltage
The functions such as locked, output over-voltage protection, over-temperature protection and overcurrent protection.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of incision of backup battery and floating charge control device, mounted on being tethered on unmanned plane, which is characterized in that including a standby
Battery case and an airborne power supply are equipped with backup battery and backup battery ConvertBox, the standby electricity in the backup battery box
One backup battery switch boards are installed in the ConvertBox of pond, be provided in the backup battery switch boards backup battery switching circuit and
One backup battery floating charge control circuit.
2. backup battery incision as described in claim 1 and floating charge control device, which is characterized in that the backup battery switching
Circuit exports for dual power supply, including ideal diode controller U1, ideal diode controller U2, N-channel MOS pipe Q1 and N
Channel MOS tube Q2；
The ideal diode controller U1 is used for the output that metal-oxide-semiconductor Q1 is controlled to realize airborne power supply DC25V, ideal diode control
The source electrode incorporating mill load power input anode that the input stage IN of device U1 processed is connected to metal-oxide-semiconductor Q1 is connected, and output stage OUT is connected to metal-oxide-semiconductor
The drain electrode of Q1 is simultaneously connected with unmanned plane load input anode is tethered at, and control pole GATE is connected to the grid of metal-oxide-semiconductor Q1；
The ideal diode controller U2 is used for the output that metal-oxide-semiconductor Q2 is controlled to realize backup battery power, ideal diode control
The input stage IN of device U2 processed is connected to the source electrode of metal-oxide-semiconductor Q2 and is connected with the power input anode of backup battery, and output stage OUT is connected to
The drain electrode of metal-oxide-semiconductor Q2 is simultaneously connected with unmanned plane load input anode is tethered at, and control pole GATE is connected to the grid of metal-oxide-semiconductor Q2；
Unmanned plane load is wherein tethered to power by DC25V DC power supplies, when, which there is exception, in DC power supply causes abnormal electrical power supply,
Ideal diode controller U1 drives metal-oxide-semiconductor Q1 to the state that complete switches off, and ideal diode controller U2 drives rapidly metal-oxide-semiconductor
Q2 turn on, be tethered at unmanned plane be supported in the time less than 500nS be switched to backup battery power supply, to realize power supply without concussion
It takes over seamlessly.
3. backup battery incision as claimed in claim 2 and floating charge control device, which is characterized in that loaded when being tethered at unmanned plane
When being powered on by the power supply of DC25V DC power supplies, electric current flows through metal-oxide-semiconductor Q1 and ideal diode controller U1, at this time in ideal two
Forward drop is detected on IN the and OUT pins of pole pipe controller U1, ideal diode controller U1 then drives GATE pins
Forward voltage drop is made to maintain 25mV；Increase when being tethered at unmanned plane load current, when making forward voltage drop more than 25mV, metal-oxide-semiconductor Q1 grid
Pole is driven to fully on, and forward voltage drop is made to drop to 25mV；Reduce when being tethered at unmanned plane load current, cause forward voltage drop low
When 25m, metal-oxide-semiconductor Q1 grids are driven to low level, to maintain forward voltage drop as 25mV；When being tethered at, unmanned plane load current is anti-
To and the voltage ratio -25mV of IN to the OUT of ideal diode controller U1 is more negative, then ideal diode controller U1 is by metal-oxide-semiconductor
Grid drags down, and metal-oxide-semiconductor Q1 is turned off in the time less than 500nS.
4. backup battery incision as claimed in claim 3 and floating charge control device, which is characterized in that the ideal diode control
Device U1 and U2 processed is LTC4357 chips；N-channel MOS pipe Q1 and Q2 are BSC014N06S chips.
5. backup battery incision as claimed in claim 4 and floating charge control device, which is characterized in that the backup battery floating charge
Control circuit is connected between backup battery and airborne power supply, for carrying out floating charge control to backup battery, to keep the electricity that charges
Stream is maintained within 2A, which includes having regulation of blood pressure device U3, power inductance L1, input capacitance C1, output
Capacitance C2, resistance R1, R2, R2, R3, R4, R5；Wherein, the input terminal VIN of having regulation of blood pressure device U3 is in parallel by ten
4.7UF/100V capacitance is connected with the output terminal of airborne power supply DC25V；Output terminal VOUT passes through ten 10UF/50V's in parallel
Capacitance and the connection of the charging end of sampling resistor R1 and backup battery, the both ends of pin ISP, ISN respectively with sampling resistor R1 are connected,
IMON, LGH and sampling resistor R4, R5 are connected, and can control the charging to backup battery electric by adjusting sampling resistor R1, R4, R5
Stream；EAIN pins are connected to output terminal VOUT by sampling resistor R2, R3, can be set by the resistance value for adjusting sampling resistor R2 and R3
To the charging voltage of backup battery.
6. backup battery incision as claimed in claim 5 and floating charge control device, which is characterized in that the having regulation of blood pressure
Device U3 uses input voltage as 8-60V, output voltage 10-50V, and output power is the PI3740-00-LGIZ cores of 50-140W
Piece.
7. backup battery incision as claimed in claim 6 and floating charge control device, which is characterized in that the having regulation of blood pressure
Power inductance L1 is connected between VS1 the and VS2 feet of device U3.
8. backup battery incision as claimed in claim 7 and floating charge control device, which is characterized in that the backup battery switching
A power output interface is provided on box, the backup battery switch boards are tethered at unmanned plane by power output interface connection
Control panel.
9. backup battery incision as claimed in claim 8 and floating charge control device, which is characterized in that the backup battery switching
The battery interface of a connection backup battery switch boards is provided on box, a connection backup battery is provided on the backup battery box
Backup battery connector, the backup battery connector is connected with the battery interface.
10. backup battery incision as claimed in claim 9 and floating charge control device, which is characterized in that the backup battery box
On be provided with a power input interface, the backup battery switch boards pass through the power input interface and connect with the airborne power supply
It connects, the airborne power supply is connected by being tethered at cable with being tethered at unmanned aerial vehicle end power supply.
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| CN108092395B (en) | 2023-12-29 |
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