CN106655332A - Power supply short-circuit-prevention protection system - Google Patents
Power supply short-circuit-prevention protection system Download PDFInfo
- Publication number
- CN106655332A CN106655332A CN201610957221.7A CN201610957221A CN106655332A CN 106655332 A CN106655332 A CN 106655332A CN 201610957221 A CN201610957221 A CN 201610957221A CN 106655332 A CN106655332 A CN 106655332A
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- Prior art keywords
- battery
- resistance
- circuit
- automobile
- light emitting
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 89
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 89
- 239000010703 silicon Substances 0.000 claims abstract description 89
- 230000008878 coupling Effects 0.000 claims description 61
- 238000010168 coupling process Methods 0.000 claims description 61
- 238000005859 coupling reaction Methods 0.000 claims description 61
- 230000005611 electricity Effects 0.000 claims description 24
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 22
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 8
- 230000007547 defect Effects 0.000 description 8
- 229910052744 lithium Inorganic materials 0.000 description 8
- 238000003825 pressing Methods 0.000 description 8
- 230000005622 photoelectricity Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005669 field effect Effects 0.000 description 2
- 241000406668 Loxodonta cyclotis Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Classifications
-
- H02J7/0026—
-
- 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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0034—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using reverse polarity correcting or protecting circuits
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a power supply short-circuit-prevention protection system. The power supply short-circuit-prevention protection system comprises a first photoelectric coupler, a second photoelectric coupler, a switch diode, a silicon controlled rectifier, a touch switch, a first light emitting diode, a second light emitting diode and resistors R1, R2, R3, R4 and R5; the silicon controlled rectifier forms a charging switch; the first photoelectric coupler controls an external backup battery to supply a trigger voltage to the silicon controlled rectifier so as to control on and off of an access; the on and off of the first photoelectric coupler is controlled by a combination of an automobile battery and the touch switch; only when the external backup battery and the automobile battery are both connected to a short-circuit protection system forwardly, the touch switch is operated, the silicon controlled rectifier is switched on, and the external backup battery charges the automobile battery so as to realize a condition that light striking is avoided in a battery clamping process by a battery clamp; in other conditions, the silicon controlled rectifier is in a closed state and is independent of whether the touch switch is operated or not; and when the battery clamp is taken off in the charging process, the silicon controlled rectifier is switched off immediately, contact points which are not in contact normally are not required to be arranged on the inner sides of upper and lower clamping plates of the battery clamp respectively, and instead, single leads are used.
Description
Technical field
The present invention relates to the anti-short circuit protection system of a kind of power supply of field of power supplies, more particularly to emergency power supply.
Background technology
With the progress of society, more and more people possess private car, but often improper use can cause many problems
Appearance, such as people forgets the lamp that cut-offs when leaving, or forgets to close vehicle electronic device, and the storage so that vehicle-mounted use for a long time
Battery is easy for that the situation of not enough power supply occurs, and when vehicle is started next time, the power supply for being used is also by this
Battery is provided, and when accumulator electric-quantity is not enough automobile starting can be caused to fail, at this time, it is necessary to start using car emergency
Power supply provides power supply for automobile starting temporarily.But, because automobile batteries (vehicle-mounted battery) and emergency starting power supply all have
Have the characteristics of can producing instantaneous large-current, if using emergency starting power supply as automobile starting power supply when, slightly do not note produce
Short circuit or reversal connection, moment can produce the high current of kiloampere, can not only cause emergency starting power supply to damage, or even cause
Fire causes user injured.
Anti-reverse and short circuit current, such as patent application for this purpose, many producers begin one's study in car emergency startup power supply
Number it is：A kind of Multifunction auto starting power source disclosed in 200520054634.1, in response to anxious startup power supply (internal battery) with
The anti-reverse short-circuit protection circuit connected between vehicle-mounted battery is by relay implement body control electric current path, it is commonly known that should
Anxious startup power supply and vehicle-mounted battery all have the characteristics of can produce instantaneous large-current, so relay is it is necessary that with large-scale
Relay, therefore the more heavy defect of the anti-reverse short-circuit protection circuit that constitutes of presence relay；Get on the bus because ought correctly connect
Current path is open-minded immediately during the battery of load, occurs sparking during vehicle-mounted battery is pressed from both sides now so as to there are battery folders
The defect of elephant, though being provided with touch-switch starts emergency starting power supply, that simply takes down vehicle-mounted battery and uses；In order to from
Vehicle-mounted operating point to be taken out and can disconnect emergency starting power supply to battery folders current path after battery folders, upper and lower two pieces in battery folders
Clamping plate inner side is respectively equipped with and is not in contact with each other a little at ordinary times, and difference lead is to anti-reverse short-circuit protection circuit, therefore there are battery folders not
Can be with the defect of single lead to anti-reverse short-circuit protection circuit.
Nowadays the progress for burying battery has promoted it to use on a large scale, is had become as emergency starting power supply using battery is buried
Widespread practice in industry, and constitute the anti-reverse short-circuit protection circuit volume mistake of emergency starting source current path with relay
In huge and heaviness, its often use emergency starting power supply be 12V18AH plumbic acid maintenance-free batteries, whole system about 10
Kilogram weight, so portable problem cannot be considered, but after emergency starting power supply is changed into and buries battery, whole system weight is only
400 grams, the volume of this anti-reverse short-circuit protection circuit that emergency starting source current path is constituted with relay is with weight just
Obviously be not suitable for.Therefore have the anti-reverse short-circuit protection circuit for being constituted emergency starting source current path with semiconductor devices to go out
Existing, such as number of patent application is：201410399268.7 a kind of anti-short circuit protection system of disclosed emergency power supply, emergency starting power supply
The anti-reverse short-circuit protection circuit Bian field-effects management and control current path being connected between vehicle-mounted battery, overcomes use
The more heavy defect of the anti-reverse short-circuit protection circuit that relay is constituted, but also exist：Because ought correctly connect vehicle-mounted storage
Current path is open-minded immediately during battery, occurs lacking for spark phenomenon during vehicle-mounted battery is pressed from both sides so as to there are battery folders
Fall into；Can disconnect emergency starting power supply to battery folders current path after battery folders to take out from vehicle-mounted operating point, in battery folders
Upper and lower two clamping plates inner side is respectively equipped with and is not in contact with each other a little at ordinary times, and difference lead is to anti-reverse short-circuit protection circuit, therefore exists
Battery folders can not be with the defect of single lead to anti-reverse short-circuit protection circuit.And for example number of patent application is：
201520322213.6 a kind of anti-short circuit protection system of disclosed emergency power supply, understands with reference to the practical accompanying drawing：It is anxious to start electricity
The anti-reverse short-circuit protection circuit sample Bian field-effects management and control system electricity being connected between source and vehicle-mounted battery (reserve battery)
Logical circulation road, overcomes the defect of the anti-reverse short-circuit protection circuit more heaviness constituted with relay；But the practicality is equally also deposited
：Because current path is open-minded immediately when above vehicle-mounted battery is correctly connected, so as to there are battery folders vehicle-mounted electric power storage is being pressed from both sides
Occurs the defect of spark phenomenon during pond, though being provided with touch-switch starts emergency starting power supply, that simply takes down vehicle-mounted
Battery and use；It is logical to battery folders electric current in order to emergency starting power supply can be disconnected from after vehicle-mounted operating point taking-up battery folders
Road, is respectively equipped with the inside of the upper and lower two clamping plates of battery folders and is not in contact with each other a little at ordinary times, and difference lead is to anti-reverse short-circuit protection
Circuit, thus there are battery folders can not be with the defect of single lead to anti-reverse short-circuit protection circuit；The practicality also has one seriously to lack
Sunken is：If anxious startup power supply is reversed, may result in and compare amplifier damage.
It is known that：Vehicle-mounted accumulator capacity nominally generally 12V, more than 45AH, and the residue after interim overdischarge
Electricity typically is all entirely capable of meeting powering to several watts of low-power circuit；So for the ease of emergency starting power supply and vehicle-mounted connection
After starting automobile, remove battery folders and terminate, often with being to retain on-vehicle battery during emergency starting power initiation automobile.
The content of the invention
The purpose of the present invention is, to overcome oneself to have the weak point of technology, to be connected by battery folders for emergency starting power supply
At vehicle-mounted battery the two poles of the earth and retain battery and start the mode of automobile, propose a kind of anti-short circuit protection system of power supply, remove
Small volume, emergency power supply are anti-short-circuit, anti-reverse, outside counnter attack charge protection, also have：1. when the upper vehicle-mounted battery of correct connection
After emergency starting power supply, the current path of emergency starting power supply is opened by operating touch-switch, ensure that battery folders
It is not in the phenomenon of sparking during vehicle-mounted battery is pressed from both sides；2. take out after battery folders immediately from vehicle-mounted battery
Emergency starting power supply is disconnected to battery folders current path, and need not be respectively equipped with the inside of the upper and lower two clamping plates of battery folders flat
When be not in contact with each other a little, as long as using single lead.
In order to realize above-mentioned purpose, the technical scheme is that：
The anti-short circuit protection system of a kind of power supply, by the protection electricity for being connected with power port, the first battery folders, the second battery folders
Road constitutes, and power port is connected with the corresponding ports of external back-up battery, the first battery folders and the second battery folders respectively with vapour
Two electrodes of the battery of car are connected；The protection circuit includes：First photoelectric coupling circuit, the second photoelectric coupling circuit, switch two
Pole pipe, controllable silicon, touch-switch, the first light emitting diode, the second light emitting diode, resistance R1, resistance R2, resistance R3, resistance
R4, resistance R5；The anode of the switching diode accesses the positive pole of power port with silicon controlled anode and after connecing by wire
Terminals, the negative electrode of switching diode is connected with the colelctor electrode of phototriode in the first photoelectric coupling circuit；The one of resistance R3
With phototriode in the first photoelectric coupling circuit after the anode of end, one end of resistance R4 and the first light emitting diode is connected with each other
Emitter stage is connected；The colelctor electrode of phototriode in the other end of resistance R3, silicon controlled grid and the second photoelectric coupling circuit
It is connected with each other；The negative electrode of the first light emitting diode is connected with one end of resistance R2；One end of resistance R1 and one end of resistance R5
And it is respectively connected to the negative terminals of power port and the terminals of the second battery folders after connecing by wire；The other end of resistance R1
It is connected with the negative electrode of light emitting diode in the first photoelectric coupling circuit by touch-switch；The other end of resistance R5 and second lights
The anode of diode is connected, and the negative electrode of the second light emitting diode is connected with the anode of light emitting diode in the second photoelectric coupling circuit
Connect；The sun of light emitting diode in silicon controlled negative electrode, the other end of resistance R4, the other end of resistance R2, the first photoelectric coupling circuit
The negative electrode phase of light emitting diode and connect in the emitter stage and the second photoelectric coupling circuit of phototriode in pole, the second photoelectric coupling circuit
Access the terminals of the first battery folders by wire afterwards.
Above-described controllable silicon is one-way SCR, and silicon controlled maintains electric current more than the maximum electricity for flowing through resistance R1
Stream.
The above touch-switch is normally opened contact touch-switch all the way.
The above power port is oriented to anti-external back-up battery and reversely accesses protection circuit with physics.
Function has：
After external back-up battery accesses protection circuit forward or backwards, the first battery folders and the second battery folders are not connect to vapour
The battery of car, and be in open circuit or during short-circuit condition, controllable silicon is off state, and unrelated with touch-switch whether is pressed,
Therefore external back-up battery will not be shorted；
After the battery of automobile accesses protection circuit forward or backwards, power port is not connected with external back-up battery, electricity
Two electrodes are in open circuit or during short-circuit condition in source port, and controllable silicon is off state, and with whether press touch-switch without
Close, therefore the battery of automobile will not be shorted；
When the battery of external back-up battery and automobile reversely accesses protection circuit, controllable silicon is off state, and
Whether with pressing touch-switch is unrelated, therefore the battery of automobile will not be electrically charged；
When external back-up battery reversely accesses the battery forward direction access protection circuit of protection circuit and automobile, at controllable silicon
In off state, and with whether press that touch-switch is unrelated, therefore external back-up battery will not be concatenated into end to end with the battery of automobile
Electric discharge and it is short-circuit；
When the reverse battery of automobile accesses protection circuit and external back-up battery forward direction accesses protection circuit, at controllable silicon
In off state, and with whether press that touch-switch is unrelated, therefore external back-up battery will not be concatenated into end to end with the battery of automobile
Electric discharge and it is short-circuit；
It is controllable before touch-switch is pressed when the battery and external back-up battery positive access protection circuit of automobile
Silicon is off state, and when touch-switch is pressed, controlled silicon conducting, external back-up battery to the battery of automobile charges, because of automobile
Battery be in power shortage state before charging, therefore the stream that charges is much larger than silicon controlled latching current, so after controlled silicon conducting, plus
Control voltage to controllable silicon gate is ineffective, unclamps touch-switch, and external back-up battery is kept normally to the battery of automobile
Charge；
When battery from external back-up battery to automobile just in charging process, start automobile success after, automobile current generator is opened
Originate electricity, and charge to the battery of automobile, the voltage is far above external back-up battery voltage, so as to form backward voltage plus controllable
Between the anode and negative electrode of silicon, by controllable silicon off state, therefore reversing the current will not be formed and charged to external back-up battery, i.e., not
Reversing the current can be formed and damage external back-up battery, so automobile current generator generates electricity in the battery charging process of automobile, not from
Battery folders are removed on the battery of automobile, reverse battery is there will not be and is charged to external back-up battery；
When battery from external back-up battery to automobile just in charging process, when charging current is plus flowing through the electricity of resistance R1
Stream maintains electric current less than silicon controlled, by controllable silicon off state；
When battery from external back-up battery to automobile just in charging process, remove battery folders from the battery of automobile, can
Control silicon is turned off；
When battery from external back-up battery to automobile just in charging process, remove external back-up battery from power port,
Controllable silicon is turned off；
When battery from external back-up battery to automobile just in charging process, controllable silicon shut-off after, need to again operate and touch
Switch could be realized charging to the battery of automobile again, therefore start automobile success, after automobile current generator generates electricity, do not operate and touch out
Close, the possibility of the battery charging of the no longer oriented automobile of external back-up battery.
Beneficial effect：
Present invention achieves except small volume, emergency power supply it is anti-short-circuit, anti-reverse, outside counnter attack charge protection, realize 1. when
After the above vehicle-mounted battery of correct connection and emergency starting power supply, by operating touch-switch the electric current of emergency starting power supply is opened
Path, ensures that battery folders are not in the phenomenon of sparking during vehicle-mounted battery is pressed from both sides；2. from vehicle-mounted storage
Take out on battery after battery folders and disconnect emergency starting power supply immediately to battery folders current path, and need not be upper and lower in battery folders
Two clamping plates inner side is respectively equipped with and is not in contact with each other a little at ordinary times, as long as using single lead.
Description of the drawings
Fig. 1 is a kind of connection diagram of the anti-short circuit protection system of power supply of the present invention；
Fig. 2 is a kind of schematic diagram of the protection circuit of the anti-short circuit protection system of power supply of the present invention；
In figure：100. protection circuits, A. power ports, the battery folders of B1. first, the battery folders of B2. second, LED1. first
Optical diode, the Light emitting diodes of LED2. second, the photoelectric coupling circuits of U1. first, the photoelectric coupling circuits of U2. second, D. switching diodes,
VS. controllable silicon, R1, R2, R3, R4, R5. resistance, SW. touch-switch.
Specific embodiment
As shown in Figure 1 and Figure 2, the anti-short circuit protection system of a kind of power supply, by be connected with power port A, the first battery folders B1,
The protection circuit 100 of the second battery folders B2 is constituted, and power port A is connected with the corresponding ports of external back-up battery, and first is electric
Pond presss from both sides B1 and the second battery folders B2 are connected respectively with two electrodes of the battery of automobile；The protection circuit 100 includes：First light
Electric coupling apparatus U1, the second photoelectric coupling circuit U2, switching diode D, controllable silicon VS, touch-switch SW, the first light emitting diode
LED1, the second LED 2, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5；The switching diode D's
The anode of anode and controllable silicon VS and after connecing by the positive terminal Vin+ of wire access power port A, switching diode D's
Negative electrode is connected with the colelctor electrode of phototriode in the first photoelectric coupling circuit U1；One end of resistance R3, one end of resistance R4 and
It is connected with the emitter stage of phototriode in the first photoelectric coupling circuit U1 after the anode of the first LED 1 is connected with each other
Connect；The current collection of phototriode in the other end of resistance R3, the grid (control pole) of controllable silicon VS and the second photoelectric coupling circuit U2
It is extremely connected with each other；The negative electrode of the first LED 1 is connected with one end of resistance R2；One end of resistance R1 and resistance R5
One end and negative terminals Vin- of power port A and the terminals of the second battery folders B2 are respectively connected to by wire after connecing；
The other end of resistance R1 is connected by touch-switch SW with the negative electrode of light emitting diode in the first photoelectric coupling circuit U1；Resistance R5
The other end be connected with the anode of the second LED 2, the negative electrode of the second LED 2 and the second photoelectricity lotus root
The anode of light emitting diode is connected in clutch U2；The negative electrode of controllable silicon VS, the other end of resistance R4, the other end of resistance R2,
In first photoelectric coupling circuit U1 in the anode of light emitting diode, the second photoelectric coupling circuit U2 phototriode emitter stage and second
The negative electrode phase of light emitting diode and the terminals of the first battery folders B1 are accessed after connecing by wire in photoelectric coupling circuit U2.
The above switching diode D is used for the reverse protection of phototriode branch road in the first photoelectric coupling circuit U1.
The above touch-switch SW is the touch-switch of normally opened contact all the way, when pressing touch-switch SW, the closing of contact,
When touch-switch SW is unclamped, contact reverts to disconnection；Touch-switch SW is used for light emitting diode in the first photoelectric coupling circuit U1
Current path break-make is controlled, and resistance R1 is the current-limiting resistance of light emitting diode in the first photoelectric coupling circuit U1.
The phototriode of the first photoelectric coupling circuit U1 is used to that whether trigger to be delivered to the grid (control of controllable silicon VS
Pole) and the first LED 1 anode break-make control.
Resistance R5 is current-limiting resistance, and restriction is flow through and light in the second LED 2 and the second photoelectric coupling circuit U2 two
The electric current of pole pipe.
When the reverse battery of automobile accesses protection circuit 100, the second LED 2 lights, the second photoelectric coupling
LEDs ON lights in device U2, phototriode conducting in the second photoelectric coupling circuit U2, in the second photoelectric coupling circuit U2
Phototriode is by the negative electrode short circuit of the grid of controllable silicon VS and controllable silicon VS；Now in spite of pressing touch-switch SW,
Light emitting diode does not light in one photoelectric coupling circuit U1, phototriode cut-off in the first photoelectric coupling circuit U1.
When the battery of automobile is positive accesses protection circuit 100, the second reversely cut-off (not lighting) of LED 2,
Reversely cut-off does not light light emitting diode in second photoelectric coupling circuit U2, phototriode cut-off in the second photoelectric coupling circuit U2,
Phototriode is not by the grid of controllable silicon VS and the negative electrode short circuit of controllable silicon VS in second photoelectric coupling circuit U2；Now when not pressing
Lower touch-switch SW, light emitting diode does not light in the first photoelectric coupling circuit U1, phototriode in the first photoelectric coupling circuit U1
Cut-off；If now when touch-switch SW is pressed, LEDs ON lights in the first photoelectric coupling circuit U1, the first photoelectric coupling
Phototriode conducting in device U1.
When the battery of automobile does not access protection circuit 100, by shape of opening a way at the first battery folders B1 and the second battery folders B2
State, no matter external back-up battery is positive or reversely accesses protection circuit 100, the second LED 2, the first photoelectricity
Light emitting diode does not light in light emitting diode and the second photoelectric coupling circuit U2 in coupling apparatus U1, in the first photoelectric coupling circuit U1
Phototriode is turned off in phototriode and the second photoelectric coupling circuit U2, now both makes to press touch-switch SW, the first light
Light emitting diode also will not light in electric coupling apparatus U1, and phototriode keeps cut-off in the first photoelectric coupling circuit U1；And when outer
When portion's reserve battery is reversely to access protection circuit 100, it is reverse to be added to controllable silicon VS anodes with cathode voltage.
When the battery of automobile does not access protection circuit 100, by short-circuit shape at the first battery folders B1 and the second battery folders B2
State, no matter external back-up battery is positive or reversely accesses protection circuit 100, the second LED 2, the first photoelectricity
Light emitting diode does not light in light emitting diode and the second photoelectric coupling circuit U2 in coupling apparatus U1, in the first photoelectric coupling circuit U1
Phototriode is turned off in phototriode and the second photoelectric coupling circuit U2, now both makes to press touch-switch SW, the first light
Light emitting diode also will not light in electric coupling apparatus U1, and phototriode keeps cut-off in the first photoelectric coupling circuit U1；And when outer
When portion's reserve battery is reversely to access protection circuit 100, it is reverse to be added to controllable silicon VS anodes with cathode voltage.
When external back-up battery does not access protection circuit 100, by open-circuit condition at positive and negative electrode in power port A, no matter
The battery of automobile is positive or reversely accesses protection circuit 100, regardless of whether pressing touch-switch SW, equal Triggerless
The grid of controllable silicon VS is reached, the first LED 1 also will not flash.
It is when external back-up battery does not access protection circuit 100, positive and negative electrode in power port A is short-circuit, no matter automobile
Battery is positive or reversely accesses protection circuit 100, and regardless of whether touch-switch SW is pressed, equal Triggerless is reached can
The grid of control silicon VS, the first LED 1 also will not flash.
When the battery of external back-up battery and automobile reversely accesses protection circuit 100, touch out in spite of pressing
SW is closed, equal Triggerless reaches the grid of controllable silicon VS, and the first LED 1 also will not flash；And due to vapour
The battery of car is in power shortage, and the anode for being added to controllable silicon VS is reverse with cathode voltage.
When the battery that external back-up battery reversely accesses protection circuit 100, automobile is positive accesses protection circuit 100, no
Whether pipe presses touch-switch SW, and equal Triggerless reaches the grid of controllable silicon VS, and the first LED 1 also will not
Flash；And it is reverse with cathode voltage to be added to the anode of controllable silicon VS.
When the reverse battery for accessing protection circuit 100, automobile when external back-up battery is positive accesses protection circuit 100, no
Whether pipe presses touch-switch SW, and equal Triggerless reaches the grid of controllable silicon VS, and the first LED 1 also will not
Flash.
When the battery positive access protection circuit 100 of external back-up battery and automobile, before touch-switch SW is pressed,
Controllable silicon VS is off state, when touch-switch SW is pressed, has trigger to reach the grid of controllable silicon VS, and controllable silicon VS leads
Lead to, and the first LED 1 can flash, external back-up battery to the battery of automobile charges, because the battery of automobile exists
Power shortage state is in before charging, therefore the latching current much larger than controllable silicon VS is flowed in charging, so after controllable silicon VS conductings, being added to can
The control voltage of control silicon VS grids is ineffective, unclamps touch-switch SW, and external back-up battery is kept normally to the battery of automobile
Charge.
When battery from external back-up battery to automobile just in charging process, start automobile success after, automobile current generator is opened
Electricity is originated, and is charged to the battery of automobile, the voltage is far above external back-up battery (outside lithium battery) voltage, so as to be formed
Backward voltage adds between the anode and negative electrode of controllable silicon VS, and by controllable silicon VS off states, therefore it is outside to form reversing the current
Portion's reserve battery (outside lithium battery) charges, i.e., will not form reversing the current and damage external back-up battery (outside lithium electricity
Pond), so automobile current generator generates electricity in the battery charging process of automobile, battery folders are not removed from the battery of automobile, also not
Have reverse battery to charge to external back-up battery (outside lithium battery).
When battery from external back-up battery to automobile just in charging process, when charging current is plus flowing through the electricity of resistance R1
Maintenance electric current of the stream less than controllable silicon VS, by controllable silicon VS off states.
When battery from external back-up battery to automobile just in charging process, remove battery folders from the battery of automobile, can
Control silicon VS is turned off.
When battery from external back-up battery to automobile just in charging process, remove external back-up battery from power port A,
Controllable silicon VS is turned off.
When battery from external back-up battery to automobile just in charging process, after controllable silicon VS shut-offs, need to operate again light
Touching switch SW could realize charging to the battery of automobile again, therefore start automobile success, after automobile current generator generates electricity, not operate light
Touch switch SW, the possibility of the battery charging of the no longer oriented automobile of external back-up battery.
Power port A is that, for protection circuit 100 and external back-up battery connectivity port, it is exported with external back-up battery
The corresponding connection in port, is oriented to anti-external back-up battery and reversely accesses protection circuit 100 with physics.Certainly external back-up battery is worked as
Protection circuit 100 is reversely accessed, protection circuit 100 also functions to reverse connecting protection effect.
The protection circuit 100 be arranged on closing box body in, by punching to box body, by the button of touch-switch SW,
First LED 1, the second LED 2 are on cartridge outer surface.
Second LED 2 is set to the optical diode for glowing, and the first LED 1 is set to greening
The optical diode of light.
Controllable silicon VS is used for concrete control charging circuit break-make, and the present invention selects one-way SCR, and the unidirectional of selection can
What control silicon was led maintains electric current to should be greater than the maximum current flow through by resistance R1, so that it is guaranteed that：External back-up battery is to automobile
In battery charging process, when first removing battery folders, make to flow through controllable silicon VS electric currents less than electric current is maintained, so as to controllable silicon VS be closed
It is disconnected；Because having prevented user from pinning touch-switch SW removes battery folders, the maintenance electricity that the one-way SCR of selection is led is it requires
Stream should be greater than the maximum current flow through by resistance R1.In order to work as, external back-up battery is positive to be accessed after protection circuit 100, and first
Battery folders B1 and the second battery folders B2 do not connect the battery to automobile, and are in open-circuit condition, it is ensured that leakage current flows through the first photoelectricity
Light emitting diode does not light in coupling apparatus U1, therefore should also select the little one-way SCR of leakage current.
The function that the present invention is realized has：
After external back-up battery accesses forward or backwards protection circuit 100, the first battery folders B1 and the second battery folders B2
Whether when not connecing the battery to automobile, and being in open circuit or short-circuit condition, controllable silicon VS is off state, and touch with pressing
SW is unrelated for switch, therefore external back-up battery will not be shorted；
After the battery of automobile accesses forward or backwards protection circuit 100, power port A does not connect with external back-up battery
Connect, in open circuit or during short-circuit condition, controllable silicon VS is off state to two electrodes in power port A, and it is light with whether pressing
Touch switch SW unrelated, therefore the battery of automobile will not be shorted；
When the battery of external back-up battery and automobile reversely accesses protection circuit 100, controllable silicon VS is off shape
State, and with whether press that touch-switch SW is unrelated, therefore the battery of automobile will not be electrically charged；
When external back-up battery reversely accesses the battery forward direction access protection circuit 100 of protection circuit 100 and automobile, can
Control silicon VS is off state, and with whether press that touch-switch SW is unrelated, therefore the battery of external back-up battery and automobile is end to end
Will not be concatenated into electric discharge and it is short-circuit；
When the reverse battery of automobile accesses protection circuit 100 and external back-up battery forward direction accesses protection circuit 100, can
Control silicon VS is off state, and with whether press that touch-switch SW is unrelated, therefore the battery of external back-up battery and automobile is end to end
Will not be concatenated into electric discharge and it is short-circuit；
When the battery and external back-up battery positive access protection circuit 100 of automobile, before touch-switch SW is pressed,
Controllable silicon VS is off state, and when touch-switch SW is pressed, controllable silicon VS conductings, external back-up battery to the battery of automobile fills
Electricity, because the battery of automobile is in before charging power shortage state, therefore the stream that charges is much larger than the latching current of controllable silicon VS, so controllable
After silicon VS conductings, the control voltage for being added to controllable silicon VS grids is ineffective, unclamps touch-switch SW, and external back-up battery keeps
The normal battery to automobile charges；
When battery from external back-up battery to automobile just in charging process, start automobile success after, automobile current generator is opened
Electricity is originated, and is charged to the battery of automobile, the voltage is far above external back-up battery (outside lithium battery) voltage, so as to be formed
Backward voltage adds between the anode and negative electrode of controllable silicon VS, and by controllable silicon VS off states, therefore it is outside to form reversing the current
Portion's reserve battery (outside lithium battery) charges, i.e., will not form reversing the current and damage external back-up battery (outside lithium electricity
Pond), so automobile current generator generates electricity in the battery charging process of automobile, battery folders are not removed from the battery of automobile, also not
Have reverse battery to charge to external back-up battery (outside lithium battery)；
When battery from external back-up battery to automobile just in charging process, when charging current is plus flowing through the electricity of resistance R1
Maintenance electric current of the stream less than controllable silicon VS, by controllable silicon VS off states；
When battery from external back-up battery to automobile just in charging process, remove battery folders from the battery of automobile, can
Control silicon VS is turned off；
When battery from external back-up battery to automobile just in charging process, remove external back-up battery from power port A,
Controllable silicon VS is turned off；
When battery from external back-up battery to automobile just in charging process, after controllable silicon VS shut-offs, need to operate again light
Touching switch SW could realize charging to the battery of automobile again, therefore start automobile success, after automobile current generator generates electricity, not operate light
Touch switch SW, the possibility of the battery charging of the no longer oriented automobile of external back-up battery.
Using method
1) after the battery by automobile accesses protection circuit 100, the second lumination of light emitting diode LED2 lights, and illustrates automobile
Reverse battery be linked in protection circuit 100；
2) after the battery by automobile accesses protection circuit 100, the second lumination of light emitting diode LED2 does not light, and illustrates vapour
The battery forward direction of car is linked in protection circuit 100；
3) when the battery forward direction by automobile is connected in protection circuit 100, touch-switch SW is pressed, the first light emitting diode is sent out
Light LED1 does not flash, illustrates that the standby battery No in outer portion has access protection circuit 100 or external back-up battery reversely to access guarantor
Protection circuit 100；
4) when the battery forward direction by automobile is connected in protection circuit 100, touch-switch SW is pressed, the first light emitting diode is sent out
Light LED1 flashes, illustrates that external back-up battery is positive and accesses protection circuit 100, and triggers controllable silicon VS conductings.
In the present invention：
When the positive pole of external back-up battery is communicated with the positive terminal Vin+ of power port A, external back-up battery it is negative
When negative terminals Vin- of pole power port A are communicated, show that external back-up battery is positive and access protection circuit 100；Work as outside
The positive pole of reserve battery is communicated with negative terminals Vin- of power port A, and the negative power supply port A of external back-up battery is just
When pole terminals Vin+ is communicated, show that external back-up battery reversely accesses protection circuit 100.
When the positive pole of the battery of automobile is communicated with the first battery folders B1, battery folders B2 of negative pole second of the battery of automobile are communicated
When, show that the battery of automobile is positive and access protection circuit 100；When the positive pole of the battery of automobile is communicated with the second battery folders B2, vapour
When battery folders B1 of negative pole first of the battery of car are communicated, the reverse battery for showing automobile accesses protection circuit 100.
Claims (5)
1. the anti-short circuit protection system of a kind of power supply, by the protection circuit for being connected with power port, the first battery folders, the second battery folders
Composition, power port is connected with the corresponding ports of external back-up battery, the first battery folders and the second battery folders respectively with automobile
Two electrodes of battery be connected；Characterized in that, the protection circuit includes：First photoelectric coupling circuit, the second photoelectric coupling
Device, switching diode, controllable silicon, touch-switch, the first light emitting diode, the second light emitting diode, resistance R1, resistance R2, electricity
Resistance R3, resistance R4, resistance R5；The anode of the switching diode accesses power end with silicon controlled anode and after connecing by wire
The positive terminal of mouth, the negative electrode of switching diode is connected with the colelctor electrode of phototriode in the first photoelectric coupling circuit；Electricity
It is photosensitive with the first photoelectric coupling circuit after the anode of one end, one end of resistance R4 and the first light emitting diode of resistance R3 is connected with each other
The emitter stage of triode is connected；Phototriode in the other end of resistance R3, silicon controlled grid and the second photoelectric coupling circuit
Colelctor electrode it is connected with each other；The negative electrode of the first light emitting diode is connected with one end of resistance R2；One end of resistance R1 and resistance
One end of R5 is simultaneously respectively connected to the negative terminals of power port and the terminals of the second battery folders by wire after connecing；Resistance R1
The other end be connected with the negative electrode of light emitting diode in the first photoelectric coupling circuit by touch-switch；The other end of resistance R5 with
The anode of the second light emitting diode is connected, light emitting diode in the negative electrode of the second light emitting diode and the second photoelectric coupling circuit
Anode is connected；Luminous two in silicon controlled negative electrode, the other end of resistance R4, the other end of resistance R2, the first photoelectric coupling circuit
In the anode of pole pipe, the second photoelectric coupling circuit in the emitter stage and the second photoelectric coupling circuit of phototriode light emitting diode the moon
Pole phase simultaneously accesses the terminals of the first battery folders after connecing by wire.
2. the anti-short circuit protection system of a kind of power supply according to claim 1, it is characterised in that described controllable silicon is unidirectional
Controllable silicon.
3. the anti-short circuit protection system of a kind of power supply according to claim 1, it is characterised in that the touch-switch is for all the way
Normally opened contact touch-switch.
4. the anti-short circuit protection system of a kind of power supply according to claim 1, it is characterised in that the power port is with physics
It is oriented to anti-external back-up battery and reversely accesses protection circuit.
5. a kind of anti-short circuit protection system of power supply according to claim 2, it is characterised in that described one-way SCR,
Maintain electric current to be more than and flow through resistance R1 maximum currents.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610957221.7A CN106655332B (en) | 2016-10-27 | 2016-10-27 | A kind of anti-short circuit protection system of power supply |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610957221.7A CN106655332B (en) | 2016-10-27 | 2016-10-27 | A kind of anti-short circuit protection system of power supply |
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| CN106655332B CN106655332B (en) | 2018-12-25 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107521361A (en) * | 2017-08-03 | 2017-12-29 | 付敏姣 | A kind of automobile batteries control device and method |
| CN114243865A (en) * | 2022-01-11 | 2022-03-25 | 双登集团股份有限公司 | Lithium battery heating management circuit supporting reverse connection protection function |
| WO2023061149A1 (en) * | 2021-10-11 | 2023-04-20 | 苏州汇川控制技术有限公司 | Silicon controlled rectifier drive circuit, silicon controlled rectifier drive application circuit, and electric/electrical device |
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| CN107521361A (en) * | 2017-08-03 | 2017-12-29 | 付敏姣 | A kind of automobile batteries control device and method |
| WO2023061149A1 (en) * | 2021-10-11 | 2023-04-20 | 苏州汇川控制技术有限公司 | Silicon controlled rectifier drive circuit, silicon controlled rectifier drive application circuit, and electric/electrical device |
| CN114243865A (en) * | 2022-01-11 | 2022-03-25 | 双登集团股份有限公司 | Lithium battery heating management circuit supporting reverse connection protection function |
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|---|---|
| CN106655332B (en) | 2018-12-25 |
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Effective date of registration: 20190328 Address after: 210014 2nd Floor, Building A, Cloud Computing Base, No. 6 Shuizhi Road, Qinhuai District, Nanjing City, Jiangsu Province Patentee after: Nanjing Kingdom New Control Instrument Co.,Ltd. Address before: No. 2, Mengxi Road, Zhenjiang, Jiangsu Province, Jiangsu Patentee before: Jiangsu University of Science and Technology |
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Address after: 210014 2nd Floor, Building A, Cloud Computing Base, No. 6 Yongzhi Road, Qinhuai District, Nanjing City, Jiangsu Province Patentee after: Nanjing Kingdom New Control Instrument Co.,Ltd. Address before: 210014 2nd Floor, Building A, Cloud Computing Base, No. 6 Shuizhi Road, Qinhuai District, Nanjing City, Jiangsu Province Patentee before: Nanjing Kingdom New Control Instrument Co.,Ltd. |
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Denomination of invention: A short circuit protection system for power supply Effective date of registration: 20200729 Granted publication date: 20181225 Pledgee: Bank of China Limited Nanjing City Branch Pledgor: NANJING KINGDOM NEW CONTROL INSTRUMENT Co.,Ltd. Registration number: Y2020980004506 |