CN106655332B - A kind of anti-short circuit protection system of power supply - Google Patents
A kind of anti-short circuit protection system of power supply Download PDFInfo
- Publication number
- CN106655332B CN106655332B CN201610957221.7A CN201610957221A CN106655332B CN 106655332 B CN106655332 B CN 106655332B CN 201610957221 A CN201610957221 A CN 201610957221A CN 106655332 B CN106655332 B CN 106655332B
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- resistance
- automobile
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [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 abstract description 55
- 238000010168 coupling process Methods 0.000 claims abstract description 55
- 238000005859 coupling reaction Methods 0.000 claims abstract description 55
- 230000005611 electricity Effects 0.000 claims description 21
- 238000000034 method Methods 0.000 abstract description 24
- 239000011120 plywood Substances 0.000 abstract 1
- 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
- 238000012423 maintenance Methods 0.000 description 6
- 230000003760 hair shine Effects 0.000 description 5
- 230000005622 photoelectricity Effects 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 3
- 238000010248 power generation Methods 0.000 description 3
- 238000010586 diagram 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
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000000977 initiatory effect Effects 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
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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 anti-short circuit protection systems of power supply, comprising: the first, second photoelectric coupling circuit, switching diode is silicon-controlled, touch-switch, the first and second light emitting diodes, resistance R1, R2, R3, R4, R5；Charge switch is constituted by silicon-controlled；External back-up battery is controlled from the first photoelectric coupling circuit and provides the on-off of trigger voltage access to silicon-controlled, the first photoelectric coupling circuit on-off combines control with touch-switch by automobile batteries；Only when the positive access short circuit protection system of the battery of external back-up battery and automobile, touch-switch, controlled silicon conducting are operated, external back-up battery charges to automobile batteries, and realizing will not strike sparks in battery folders folder cell process；Other situations, it is silicon-controlled in closing, and with whether to operate touch-switch unrelated；Battery folders are removed in charging process, it is silicon-controlled to immediately turn off, without setting up usually non-touching contact separately on the inside of battery folders upper and lower plywoods, just with single lead.
Description
Technical field
The present invention relates to field of power supplies, the in particular to a kind of anti-short circuit protection system of power supply of emergency power supply.
Background technique
With the development of the society, more and more people possess private car, but often improper use will lead to many problems
Appearance, such as when people leaves forget the lamp that cut-offs, or forget to close vehicle electronic device, use the storage so that vehicle-mounted for a long time
Battery is easy for the case where will appear not enough power supply, and when starting vehicle next time, used power supply is also by this
Battery provides, and will lead to automobile starting failure when accumulator electric-quantity deficiency, at this time, it is necessary to start using car emergency
Power supply temporarily provides power supply for automobile starting.But because automobile batteries (vehicle-mounted battery) and emergency starting power supply all have
If the characteristics of can produce instantaneous large-current does not pay attention to slightly generating use emergency starting power supply as automobile starting power supply
It is shorted or reversal connection, moment can produce the high current of kiloampere, not only will cause the damage of emergency starting power supply, or even caused
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 are as follows: a kind of Multifunction auto starting power source disclosed in 200520054634.1, because emergency startup power supply (internal battery) with
The anti-reverse short-circuit protection circuit connected between vehicle-mounted battery controls current path by relay implement body, it is known that answering
Anxious startup power supply and vehicle-mounted battery all have the characteristics that can produce instantaneous large-current, so relay is it is necessary that with large size
Relay, therefore there is the more bulky defect of anti-reverse short-circuit protection circuit constituted with relay；It gets on the bus because ought correctly connect
Current path is open-minded immediately when the battery of load, occurs sparking during pressing from both sides vehicle-mounted battery now so that there are battery folders
The defect of elephant, though being equipped with touch-switch starts emergency starting power supply, that only takes down vehicle-mounted battery and uses；In order to from
Vehicle-mounted operating point, which is taken out, can disconnect emergency starting power supply after battery folders to battery folders current path, and upper and lower two pieces in battery folders
Be respectively equipped on the inside of clamping plate and be usually not in contact with each other a little, and respectively lead to anti-reverse short-circuit protection circuit, therefore there are battery folders not
It can single lead to the defect of anti-reverse short-circuit protection circuit.
Nowadays bury battery progress promoted its it is a wide range of use, use and bury battery and have become as emergency starting power supply
Widespread practice in industry, and the anti-reverse short-circuit protection circuit volume mistake of emergency starting source current access is constituted with relay
In huge and heavy, often using in emergency starting power supply is 12V18AH plumbic acid maintenance-free battery, whole system about 10
Kilogram weight, so can not consider portable problem, but after emergency starting power supply changes into and buries battery, whole system weight is only
400 grams, the volume and weight of this anti-reverse short-circuit protection circuit that emergency starting source current access is constituted with relay are just
Obviously be not suitable for.Therefore there is the anti-reverse short-circuit protection circuit for being constituted emergency starting source current access with semiconductor devices to go out
It is existing, such as number of patent application are as follows: a kind of anti-short circuit protection system of emergency power supply, emergency starting power supply disclosed in 201410399268.7
The anti-reverse short-circuit protection circuit being connect between vehicle-mounted battery controls current path using field-effect tube, overcomes use
The more bulky defect of anti-reverse short-circuit protection circuit that relay is constituted, but there is also: because ought correctly connect upper vehicle-mounted storage
Current path is open-minded immediately when battery, occurs lacking for spark phenomenon during pressing from both sides vehicle-mounted battery so that there are battery folders
It falls into；In order to which emergency starting power supply can be disconnected to battery folders current path, in battery folders after vehicle-mounted operating point taking-up battery folders
It is respectively equipped on the inside of upper and lower two clamping plates and is usually not in contact with each other a little, and lead therefore exists to anti-reverse short-circuit protection circuit respectively
Battery folders cannot use single lead to the defect of anti-reverse short-circuit protection circuit.For another example number of patent application are as follows:
A kind of anti-short circuit protection system of emergency power supply disclosed in 201520322213.6, understands in conjunction with the practical attached drawing: anxious starting electricity
The anti-reverse short-circuit protection circuit sample connected between source and vehicle-mounted battery (reserve battery) is using field-effect tube control electricity
Logical circulation road overcomes the more bulky defect of anti-reverse short-circuit protection circuit constituted with relay；But this is practical equally also to deposit
: current path is open-minded immediately when because when battery vehicle-mounted in correct connection, so that there are battery folders to press from both sides vehicle-mounted electric power storage
Occurs the defect of spark phenomenon during pond, though being equipped with touch-switch starts emergency starting power supply, that only takes down vehicle-mounted
Battery and use；It is logical to battery folders electric current in order to which emergency starting power supply can be disconnected after vehicle-mounted operating point taking-up battery folders
Road is respectively equipped on the inside of the upper and lower two clamping plates of battery folders and is usually not in contact with each other a little, and distinguishes lead to anti-reverse short-circuit protection
Circuit, therefore have the defects that battery folders cannot use single lead to anti-reverse short-circuit protection circuit；This is practical serious scarce there are also one
It is sunken: if anxious startup power supply is reversed, to may result in and compare amplifier damage.
It is known that: vehicle-mounted accumulator capacity is nominally generally 12V, 45AH or more, and the residue after interim overdischarge
Electricity is generally all able to satisfy completely to the low-power circuit power supply of several watts；So for the ease of emergency starting power supply and vehicle-mounted connection
After starting automobile, removing battery folders terminates, and is often to retain on-vehicle battery in the process with emergency starting power initiation automobile.
Summary of the invention
The purpose of the present invention is connected by battery folders for emergency starting power supply to overcome oneself to have the shortcoming of technology
At vehicle-mounted battery the two poles of the earth and retain battery and start the mode of automobile, proposes a kind of anti-short circuit protection system of power supply, remove
It is the anti-short circuit of small in size, emergency power supply, anti-reverse, outside counnter attack charge protection, also include 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 operation touch-switch, ensures that battery folders
The phenomenon that being not in sparking during pressing from both sides vehicle-mounted battery；2. after taking out battery folders from vehicle-mounted battery immediately
Emergency starting power supply is disconnected to battery folders current path, and does not need to be respectively equipped on 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 with single lead.
In order to achieve the above purpose, the technical scheme is that
A kind of anti-short circuit protection system of power supply, by the protection electricity for being connected with power port, the first battery folders, the second battery folders
Road 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 vapour
Two electrodes of the battery of vehicle are connected；The protection circuit includes: the first photoelectric coupling circuit, the second photoelectric coupling circuit, switch two
Pole pipe, silicon-controlled, 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 and silicon-controlled anode simultaneously pass through the anode of conducting wire access power port after connecing
Terminals, the cathode of switching diode are connected with the collector of phototriode in the first photoelectric coupling circuit；The one of resistance R3
Phototriode in the anode at end, one end of resistance R4 and the first light emitting diode rear and the first photoelectric coupling circuit connected with each other
Emitter is connected；The collector 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 cathode of first light emitting diode is connected with one end of resistance R2；One end of resistance R1 and one end of resistance R5
And the negative terminals of power port and the terminals of the second battery folders are respectively connected to after connecing by conducting wire；The other end of resistance R1
It is connected by touch-switch with the cathode of light emitting diode in the first photoelectric coupling circuit；The other end of resistance R5 and second shines
The anode of diode is connected, and the cathode of the second light emitting diode is connected with the anode of light emitting diode in the second photoelectric coupling circuit
It connects；The silicon-controlled other end of cathode, resistance R4, the other end of resistance R2, in the first photoelectric coupling circuit light emitting diode sun
It the cathode phase of light emitting diode and is connect in the emitter and the second photoelectric coupling circuit of phototriode in pole, the second photoelectric coupling circuit
The terminals of the first battery folders are accessed by conducting wire afterwards.
It is above-described it is silicon-controlled be one-way SCR, and silicon-controlled maintenances electric current is greater than and flows through the maximum electric of resistance R1
Stream.
Touch-switch described above is normally opened contact touch-switch all the way.
Power port described above is oriented to anti-external back-up battery with physics and reversely accesses protection circuit.
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 vehicle, and in open circuit or when short-circuit condition, it is silicon-controlled in an off state, and with whether to press touch-switch unrelated,
Therefore external back-up battery will not be short-circuited；
After the battery of automobile accesses protection circuit forward or backwards, power port is not connect with external back-up battery, electricity
Two electrodes are in open circuit or when short-circuit condition in source port, silicon-controlled in an off state, and with whether press touch-switch without
It closes, therefore the battery of automobile will not be short-circuited；
It is silicon-controlled in an off state when the battery of external back-up battery and automobile reversely access protection circuit, and
With whether press that 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, silicon-controlled place
In off state, and with whether press that touch-switch is unrelated, therefore the battery of external back-up battery and automobile will not be concatenated into end to end
Electric discharge and it is short-circuit；
When the reverse battery of automobile access protection circuit and external back-up battery forward direction access protection circuit, silicon-controlled place
In off state, and with whether press that touch-switch is unrelated, therefore the battery of external back-up battery and automobile will not be concatenated into end to end
Electric discharge and it is short-circuit；
When the battery of automobile and external back-up battery positive access protection circuit, before pressing touch-switch, controllably
Silicon is in an off state, and when pressing touch-switch, controlled silicon conducting, external back-up battery charges to the battery of automobile, 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 adding after controlled silicon conducting
Control voltage to controllable silicon gate is ineffective, unclamps touch-switch, and external back-up battery is kept normally to the battery of automobile
Charging；
When battery from external back-up battery to automobile just during the charging process, starting automobile success after, automobile current generator is opened
Electricity is originated, and is charged to the battery of automobile, which is much higher than external back-up battery voltage, adds controllably to form backward voltage
Between the anode and cathode of silicon, by silicon-controlled off state, therefore it not will form reverse current and charge to external back-up battery, i.e., not
Will form reverse current damage external back-up battery, so automobile current generator generates electricity into 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 charges to external back-up battery；
When battery from external back-up battery to automobile just during the charging process, flow through the electricity of resistance R1 when charging current adds
Stream is less than silicon-controlled maintenance electric current, by silicon-controlled off state；
When battery from external back-up battery to automobile just during the 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 during the charging process, remove external back-up battery from power port,
It is silicon-controlled to be turned off；
When battery from external back-up battery to automobile just during the charging process, after silicon-controlled shutdown, need to operate and touch again
Switch is just able to achieve to charge to the battery of automobile again, therefore starts automobile success, after automobile current generator power generation, does not operate and touches out
It closes, the possibility of the battery charging of the no longer oriented automobile of external back-up battery.
The utility model has the advantages that
The present invention realize except small in size, emergency power supply it is anti-short circuit, it is anti-reverse, outside counnter attack charge protection, realize 1. when
After correct connection upper vehicle-mounted battery and emergency starting power supply, the electric current of emergency starting power supply is opened by operation touch-switch
Access ensures that the phenomenon that battery folders are not in sparking during pressing from both sides vehicle-mounted battery；2. from vehicle-mounted storage
Emergency starting power supply is disconnected immediately to battery folders current path after taking out battery folders on battery, and is not needed upper and lower in battery folders
It is respectively equipped on the inside of two clamping plates and is usually not in contact with each other a little, as long as with single lead.
Detailed description of the invention
Fig. 1 is a kind of connection schematic diagram of the anti-short circuit protection system of power supply of the 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 invention；
In figure: 100. protection circuits, A. power port, the first battery folders of B1., the second battery folders of B2., LED1. first are sent out
Optical diode, the second Light emitting diode of LED2., the first photoelectric coupling circuit of U1., the second photoelectric coupling circuit of U2., D. switching diode,
VS. silicon-controlled, 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 second battery folders B2 forms, and power port A is connected with the corresponding ports of external back-up battery, the first electricity
Pond folder B1 and the second battery folders B2 is connected with two electrodes of the battery of automobile respectively；The protection circuit 100 includes: the first light
Electric coupling apparatus U1, the second photoelectric coupling circuit U2, switching diode D, silicon-controlled VS, touch-switch SW, the first light emitting diode
LED1, the second Light-emitting diode LED 2, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5；The switching diode D's
The anode of anode and silicon-controlled VS and after connecing by the positive terminal Vin+ of conducting wire access power port A, switching diode D's
Cathode is connected with the collector of phototriode in the first photoelectric coupling circuit U1；One end of resistance R3, one end of resistance R4 and
It is connected after the anode of first Light-emitting diode LED 1 is connected with each other with the emitter of phototriode in the first photoelectric coupling circuit U1
It connects；The other end of resistance R3, silicon-controlled VS grid (control electrode) and the second photoelectric coupling circuit U2 in phototriode current collection
It is extremely connected with each other；The cathode of first Light-emitting diode LED 1 is connected with one end of resistance R2；One end of resistance R1 and resistance R5
One end and be respectively connected to by conducting wire after connecing power port A negative terminals Vin- and the second battery folders B2 terminals；
The other end of resistance R1 is connected by touch-switch SW with the cathode of light emitting diode in the first photoelectric coupling circuit U1；Resistance R5
The other end be connected with the anode of the second Light-emitting diode LED 2, the cathode of the second Light-emitting diode LED 2 and the second photoelectricity lotus root
The anode of light emitting diode is connected in clutch U2；The cathode of silicon-controlled VS, the other end of resistance R4, resistance R2 the other end,
The anode of light emitting diode in first photoelectric coupling circuit U1, in the second photoelectric coupling circuit U2 phototriode emitter and second
The cathode phase of light emitting diode and the terminals of the first battery folders B1 are accessed after connecing by conducting wire in photoelectric coupling circuit U2.
Reverse protection of the switching diode D described above for phototriode branch in the first photoelectric coupling circuit U1.
Touch-switch SW described above is the touch-switch of normally opened contact all the way, when pressing touch-switch SW, contact closure,
When unclamping touch-switch SW, contact reverts to disconnection；Touch-switch SW is for light emitting diode in the first photoelectric coupling circuit U1
The control of current path on-off, resistance R1 is the current-limiting resistance of light emitting diode in the first photoelectric coupling circuit U1.
Whether the phototriode of the first photoelectric coupling circuit U1 is for sending trigger signal to the (control of the grid of silicon-controlled VS
Pole) and the first Light-emitting diode LED 1 anode on-off control.
Resistance R5 is current-limiting resistance, and limitation is flowed through luminous two in the second Light-emitting diode LED 2 and the second photoelectric coupling circuit U2
The electric current of pole pipe.
When the reverse battery of automobile access protection circuit 100, the second Light-emitting diode LED 2 shines, the second photoelectric coupling
LEDs ON shines in device U2, and phototriode is connected in the second photoelectric coupling circuit U2, in the second photoelectric coupling circuit U2
The cathode of the grid of silicon-controlled VS and silicon-controlled VS are shorted by phototriode；At this time in spite of pressing touch-switch SW,
Light emitting diode does not shine in one photoelectric coupling circuit U1, and phototriode ends in the first photoelectric coupling circuit U1.
When the battery forward direction of automobile access protection circuit 100, the second reversely cut-off (not shining) of Light-emitting diode LED 2,
Light emitting diode, which reversely ends, in second photoelectric coupling circuit U2 does not shine, and phototriode ends in the second photoelectric coupling circuit U2,
The cathode of the grid of silicon-controlled VS and silicon-controlled VS are not shorted by phototriode in second photoelectric coupling circuit U2；At this time when not pressing
Light emitting diode does not shine in lower touch-switch SW, the first photoelectric coupling circuit U1, phototriode in the first photoelectric coupling circuit U1
Cut-off；If LEDs ON shines in the first photoelectric coupling circuit U1, the first photoelectric coupling at this time when pressing touch-switch SW
Phototriode is connected 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, regardless of external back-up battery is positive or reversed access protection circuit 100, the second Light-emitting diode LED 2, the first photoelectricity
Light emitting diode does not shine 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, both makes to press touch-switch SW, the first light at this time
Light emitting diode will not shine 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 reversed access protection circuit 100, it is reversed for being added to silicon-controlled VS anode and cathode voltage.
When the battery of automobile does not access protection circuit 100, by shape short-circuit at the first battery folders B1 and the second battery folders B2
State, regardless of external back-up battery is positive or reversed access protection circuit 100, the second Light-emitting diode LED 2, the first photoelectricity
Light emitting diode does not shine 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, both makes to press touch-switch SW, the first light at this time
Light emitting diode will not shine 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 reversed access protection circuit 100, it is reversed for being added to silicon-controlled VS anode and 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, regardless of
The battery of automobile is positive or reversed access protection circuit 100, regardless of whether pressing touch-switch SW, equal Triggerless
The grid of silicon-controlled VS is reached, the first Light-emitting diode LED 1 will not flash.
When external back-up battery does not access protection circuit 100, by positive and negative electrode short circuit in power port A, regardless of automobile
Battery is positive or reversed access protection circuit 100, and regardless of whether touch-switch SW is pressed, equal Triggerless arrival can
The grid of silicon VS is controlled, the first Light-emitting diode LED 1 will not flash.
When the battery of external back-up battery and automobile reversely access protection circuit 100, touched out in spite of pressing
SW is closed, equal Triggerless reaches the grid of silicon-controlled VS, and the first Light-emitting diode LED 1 will not flash；And due to vapour
The battery of vehicle is in power shortage, and anode and the cathode voltage for being added to silicon-controlled VS are reversed.
When external back-up battery reversely accesses the battery forward direction access protection circuit 100 of protection circuit 100, automobile, no
Whether pipe presses touch-switch SW, and equal Triggerless reaches the grid of silicon-controlled VS, and the first Light-emitting diode LED 1 will not
It flashes；And be added to silicon-controlled VS anode and cathode voltage it is reversed.
When external back-up battery forward direction accesses the reverse battery access protection circuit 100 of protection circuit 100, automobile, no
Whether pipe presses touch-switch SW, and equal Triggerless reaches the grid of silicon-controlled VS, and the first Light-emitting diode LED 1 will not
It flashes.
When the battery of external back-up battery and automobile positive access protection circuit 100, before pressing touch-switch SW,
Silicon-controlled VS is in an off state, when pressing touch-switch SW, has trigger signal to reach the grid of silicon-controlled VS, silicon-controlled VS is led
It is logical, and the first Light-emitting diode LED 1 can flash, external back-up battery charges to the battery of automobile, because the battery of automobile exists
Power shortage state is in front of charging, therefore the stream that charges is much larger than the latching current of silicon-controlled VS, so being added to can after silicon-controlled VS conducting
The control voltage for controlling silicon VS grid is ineffective, unclamps touch-switch SW, and external back-up battery is kept normally to the battery of automobile
Charging.
When battery from external back-up battery to automobile just during the charging process, starting automobile success after, automobile current generator is opened
Electricity is originated, and is charged to the battery of automobile, which is much higher than external back-up battery (external lithium battery) voltage, to be formed
Backward voltage adds between the anode and cathode of silicon-controlled VS, and by silicon-controlled VS off state, therefore it is outside not will form reverse current
Portion's reserve battery (external lithium battery) charging not will form reverse current damage external back-up battery (external lithium electricity
Pond), so automobile current generator generates electricity into the battery charging process of automobile, battery folders are not removed from the battery of automobile, also not
Reverse battery is had to charge to external back-up battery (external lithium battery).
When battery from external back-up battery to automobile just during the charging process, flow through the electricity of resistance R1 when charging current adds
Stream is less than the maintenance electric current of silicon-controlled VS, by silicon-controlled VS off state.
When battery from external back-up battery to automobile just during the 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 during the charging process, remove external back-up battery from power port A,
Silicon-controlled VS is turned off.
When battery from external back-up battery to automobile just during the charging process, after silicon-controlled VS shutdown, need to operate again light
Touching switch SW is just able to achieve to charge to the battery of automobile again, therefore starts automobile success, after automobile current generator power generation, does 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 to export for protecting circuit 100 and external back-up battery connectivity port with external back-up battery
The corresponding connection in port is oriented to anti-external back-up battery with physics and reversely accesses protection circuit 100.Certainly work as external back-up battery
Reversed access protection circuit 100, protection circuit 100 also function to reverse connecting protection effect.
The protection circuit 100 is mounted in closed box body, by being punched to box body, by the button of touch-switch SW,
First Light-emitting diode LED 1, the second Light-emitting diode LED 2 are set on cartridge outer surface.
Second Light-emitting diode LED 2 is set as the optical diode to glow, and the first Light-emitting diode LED 1 is set as greening
The optical diode of light.
Silicon-controlled VS is for specifically controlling charging circuit on-off, and the present invention selects one-way SCR, and the unidirectional of selection can
The maintenance electric current led of control silicon should be greater than the maximum current flowed 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 silicon-controlled VS electric current less than electric current is maintained, so that silicon-controlled 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 it requires
Stream should be greater than the maximum current flowed through by resistance R1.In order to when external back-up battery forward direction access protection circuit 100 after, first
Battery folders B1 and the second battery folders B2 does not connect the battery to automobile, and is in open-circuit condition, it is ensured that leakage current flows through the first photoelectricity
Light emitting diode does not shine in coupling apparatus U1, therefore the one-way SCR that also leakage current should be selected small.
The function that the present invention realizes has:
After external back-up battery accesses protection circuit 100 forward or backwards, the first battery folders B1 and the second battery folders B2
Do not connect the battery to automobile, and when in open circuit or short-circuit condition, silicon-controlled VS is in an off state, and with whether press and touch
Switch SW is unrelated, therefore external back-up battery will not be short-circuited；
After the battery of automobile accesses protection circuit 100 forward or backwards, power port A does not connect with external back-up battery
Connect, two electrodes are in open circuit in power port A or when short-circuit condition, silicon-controlled VS is in an off state, and with whether press it is light
It is unrelated to touch switch SW, therefore the battery of automobile will not be short-circuited；
When the battery of external back-up battery and automobile reversely access protection circuit 100, silicon-controlled 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；
It, can when external back-up battery reversely accesses the battery forward direction access protection circuit 100 of protection circuit 100 and automobile
It is in an off state to control silicon VS, 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；
It, can when the reverse battery of automobile access protection circuit 100 and external back-up battery forward direction access protection circuit 100
It is in an off state to control silicon VS, 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 of automobile and external back-up battery positive access protection circuit 100, before pressing touch-switch SW,
Silicon-controlled VS is in an off state, and when pressing touch-switch SW, silicon-controlled VS conducting, external back-up battery is filled to the battery of automobile
Electricity, because the battery of automobile is in power shortage state before charging, therefore the stream that charges is much larger than the latching current of silicon-controlled VS, so controllably
After silicon VS conducting, the control voltage for being added to silicon-controlled VS grid is ineffective, unclamps touch-switch SW, and external back-up battery is kept
Normally charge to the battery of automobile；
When battery from external back-up battery to automobile just during the charging process, starting automobile success after, automobile current generator is opened
Electricity is originated, and is charged to the battery of automobile, which is much higher than external back-up battery (external lithium battery) voltage, to be formed
Backward voltage adds between the anode and cathode of silicon-controlled VS, and by silicon-controlled VS off state, therefore it is outside not will form reverse current
Portion's reserve battery (external lithium battery) charging not will form reverse current damage external back-up battery (external lithium electricity
Pond), so automobile current generator generates electricity into the battery charging process of automobile, battery folders are not removed from the battery of automobile, also not
Reverse battery is had to charge to external back-up battery (external lithium battery)；
When battery from external back-up battery to automobile just during the charging process, flow through the electricity of resistance R1 when charging current adds
Stream is less than the maintenance electric current of silicon-controlled VS, by silicon-controlled VS off state；
When battery from external back-up battery to automobile just during the 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 during the charging process, remove external back-up battery from power port A,
Silicon-controlled VS is turned off；
When battery from external back-up battery to automobile just during the charging process, after silicon-controlled VS shutdown, need to operate again light
Touching switch SW is just able to achieve to charge to the battery of automobile again, therefore starts automobile success, after automobile current generator power generation, does not operate light
Touch switch SW, the possibility of the battery charging of the no longer oriented automobile of external back-up battery.
Application method
1) after circuit 100 are protected in the battery access of automobile, the second lumination of light emitting diode LED2 shines, and illustrates automobile
Reverse battery be linked into protection circuit 100 on；
2) after circuit 100 are protected in the battery access of automobile, the second lumination of light emitting diode LED2 does not shine, and illustrates vapour
The battery forward direction of vehicle is linked on protection circuit 100；
3) when connecing the battery forward direction of automobile on protection circuit 100, touch-switch SW, the first light emitting diode hair are pressed
Light LED1 does not flash, illustrates that external back-up battery does not access protection circuit 100 or external back-up battery reversely accesses guarantor
Protection circuit 100；
4) when connecing the battery forward direction of automobile on protection circuit 100, touch-switch SW, the first light emitting diode hair are pressed
Light LED1 flashes, illustrates external back-up battery forward direction access protection circuit 100, and trigger silicon-controlled VS conducting.
In the present invention:
When the anode of external back-up battery is communicated with the positive terminal Vin+ of power port A, external back-up battery is born
When the negative terminals Vin- of pole power port A is communicated, show external back-up battery forward direction access protection circuit 100；Work as outside
The anode of reserve battery is communicated with the 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 anode of the battery of automobile is communicated with the first battery folders B1, the second battery folders of cathode B2 of the battery of automobile is communicated
When, show the battery forward direction access protection circuit 100 of automobile；When the anode of the battery of automobile is communicated with the second battery folders B2, vapour
When the first battery folders of cathode B1 of the battery of vehicle is communicated, show the reverse battery access protection circuit 100 of automobile.
Claims (5)
1. a kind of anti-short circuit protection system 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；It is characterized in that, the protection circuit includes: the first photoelectrical coupler, the second photoelectric coupling
Device, switching diode, silicon-controlled, touch-switch, the first light emitting diode, the second light emitting diode, resistance R1, resistance R2, electricity
Hinder R3, resistance R4, resistance R5；The anode of the switching diode and silicon-controlled anode simultaneously access power end by conducting wire after connecing
The positive terminal of mouth, the cathode of switching diode are connected with the collector of phototriode in the first photoelectrical coupler；Electricity
Hinder one end of R3, one end of resistance R4 and the first light emitting diode anode it is connected with each other after with it is photosensitive in the first photoelectrical coupler
The emitter of triode is connected；Phototriode in the other end of resistance R3, silicon-controlled grid and the second photoelectrical coupler
Collector it is connected with each other；The cathode of 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 conducting wire after connecing；Resistance R1
The other end be connected by touch-switch with the cathode of light emitting diode in the first photoelectrical coupler；The other end of resistance R5 with
The anode of second light emitting diode is connected, light emitting diode in the cathode of the second light emitting diode and the second photoelectrical coupler
Anode is connected；The silicon-controlled other end of cathode, resistance R4, the other end of resistance R2 shine two in the first photoelectrical coupler
In the anode of pole pipe, the second photoelectrical coupler in the emitter and the second photoelectrical coupler of phototriode light emitting diode yin
Pole phase and the terminals for accessing the first battery folders after connecing by conducting wire.
2. the anti-short circuit protection system of a kind of power supply according to claim 1, which is characterized in that it is described it is silicon-controlled be unidirectional
It is silicon-controlled.
3. the anti-short circuit protection system of a kind of power supply according to claim 1, which is characterized in that the touch-switch is 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, which is characterized in that the power port is with physics
It is oriented to anti-external back-up battery and reversely accesses protection circuit.
5. the anti-short circuit protection system of a kind of power supply according to claim 2, which is characterized in that the one-way SCR,
It maintains electric current to be greater than and flows through resistance R1 maximum current.
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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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| 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 true CN106655332B (en) | 2018-12-25 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107521361A (en) * | 2017-08-03 | 2017-12-29 | 付敏姣 | A kind of automobile batteries control device and method |
| CN113794470A (en) * | 2021-10-11 | 2021-12-14 | 苏州汇川控制技术有限公司 | Silicon controlled rectifier driving circuit, silicon controlled rectifier driving application circuit and electric/electrical equipment |
| CN114189020A (en) * | 2021-12-14 | 2022-03-15 | 深圳市卡莱福科技有限公司 | Vehicle emergency starting device and wire clamp 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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| JPH06189442A (en) * | 1992-12-16 | 1994-07-08 | Fuji Electric Co Ltd | Short-circuit protective circuit and method of resetting power source |
| CN104134990A (en) * | 2014-08-14 | 2014-11-05 | 惠州市新科华实业有限公司 | Emergency power supply short-circuit preventing protective system |
| CN204030548U (en) * | 2014-09-11 | 2014-12-17 | 石狮市酷瑞电气有限责任公司 | A kind of short-circuit protection circuit of frequency changer direct current bus |
| CN104842800A (en) * | 2015-04-11 | 2015-08-19 | 深圳市鑫嘉恒科技有限公司 | Output circuit with power source polarity reverse connection protection for automobile starting circuit |
| CN204578076U (en) * | 2015-05-19 | 2015-08-19 | 惠州市新科华实业有限公司 | A kind of emergency power supply against short-circuit protection system |
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| JPH06189442A (en) * | 1992-12-16 | 1994-07-08 | Fuji Electric Co Ltd | Short-circuit protective circuit and method of resetting power source |
| CN104134990A (en) * | 2014-08-14 | 2014-11-05 | 惠州市新科华实业有限公司 | Emergency power supply short-circuit preventing protective system |
| CN204030548U (en) * | 2014-09-11 | 2014-12-17 | 石狮市酷瑞电气有限责任公司 | A kind of short-circuit protection circuit of frequency changer direct current bus |
| CN104842800A (en) * | 2015-04-11 | 2015-08-19 | 深圳市鑫嘉恒科技有限公司 | Output circuit with power source polarity reverse connection protection for automobile starting circuit |
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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 |