CN108075543A - A kind of protection circuit of emergency power supply - Google Patents

A kind of protection circuit of emergency power supply Download PDF

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Publication number
CN108075543A
CN108075543A CN201711407132.6A CN201711407132A CN108075543A CN 108075543 A CN108075543 A CN 108075543A CN 201711407132 A CN201711407132 A CN 201711407132A CN 108075543 A CN108075543 A CN 108075543A
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China
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resistance
capacitance
stitch
processor
connects
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CN201711407132.6A
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Chinese (zh)
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CN108075543B (en
Inventor
王金元
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Dongguan Hui Hao Electrical Products Co Ltd
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Dongguan Hui Hao Electrical Products Co Ltd
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    • H02J7/0026
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/0034Circuit 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)
  • Electronic Switches (AREA)
  • Direct Current Feeding And Distribution (AREA)

Abstract

The present invention is suitable for field of power supplies; provide a kind of protection circuit of emergency power supply; the protection circuit includes processor circuit; connect the control relay circuit of the processor circuit; connect the power protecting circuit of the processor circuit and the control relay circuit; it is electrically connected the power supply of the processor circuit, control relay circuit and power protecting circuit and the overload protecting circuit of the connection power supply.Solve the technical issues of current power supply cannot well be protected when in use, power supply is caused to be easily damaged.

Description

A kind of protection circuit of emergency power supply
Technical field
The invention belongs to field of power supplies more particularly to a kind of protection circuits of emergency power supply.
Background technology
At present, in the market emergency power supply is numerous, but there are many problems, for example these power supplys can provide It is the electricity used that we, which meet an urgent need, but there is be to be charged or power supply is excessively used when all can in power supply It damages power supply in itself, and then influences the service life of power supply, but also a protection well cannot be carried out to power supply, these are asked It inscribes and very big trouble is brought to all users, but also the life manufacturer of power supply can be unsatisfied be subject to client.
The content of the invention
It is an object of the invention to provide a kind of protection circuits of emergency power supply, it is intended to solve current power supply use when The technical issues of time cannot well be protected, power supply is caused to be easily damaged.
The present invention is achieved in that a kind of protection circuit of emergency power supply, and the protection circuit includes processor circuit, The control relay circuit of the processor circuit is connected, connects the electricity of the processor circuit and the control relay circuit Protection circuit is electrically connected the power supply of the processor circuit, control relay circuit and power protecting circuit and connection institute State the overload protecting circuit of power supply.
The present invention further technical solution be:The processor circuit include processor U1, resistance RA1, resistance RA4, Resistance RA5, resistance RA6, resistance RA7, resistance RA3, resistance RA16, capacitance CA1, capacitance CA2, capacitance CA3, capacitance CA10, have The VCC stitch of electrode capacitance CA4, crystal oscillator X1 and triode QA1, the processor U1 are having electrode capacitance CA4 just described in connecting respectively Pole, one end of the capacitance CA3, one end of the resistance RA3 and VCC+5V, the cathode connection GND for having electrode capacitance CA4, The other end connection GND of the capacitance CA3, the other end of the resistance RA3 connect one end of the resistance RA6, described respectively One end of capacitance CA10, the P0.4/RST/VPP stitch of the processor U1 and the control relay circuit, the resistance The P0.3/XIN stitch point of the other end connection GND, the processor U1 of the other end connection GND, the capacitance CA10 of RA16 One end of the crystal oscillator X1 is not connected and one end of the capacitance CA1, the other end of the crystal oscillator X1 connect the capacitance respectively One end of CA2 and the P0.2/XOUT stitch of the processor U1, the other end of the capacitance CA1 and the capacitance CA2's is another It holds and is all connected with GND, described in the P4.4/AIN4 stitch connection of the connection of GND the stitch GND, the processor U1 of the processor U1 One end of resistance RA1, the other end of the resistance RA1 connect the base stage of the triode QA1, the transmitting of the triode QA1 Pole connects GND, and the collector of the triode QA1 connects the control relay circuit, the P4.3/AIN3 of the processor U1 Stitch connects one end of the resistance RA5, and the other end of the resistance RA5 connects the control relay circuit, the processing The P4.2/AIN2 stitch of device U1 connects one end of the resistance RA6 and one end of the resistance RA7 respectively, the resistance RA6's The other end connects VCC+5V, the P0.0/INT0 stitch connection institute of the other end connection GND, the processor U1 of the resistance RA7 One end of resistance RA4 is stated, the other end of the resistance RA4 connects the control relay circuit.
The present invention further technical solution be:The control relay circuit includes processor U2A, processor U2B, electricity Hinder RA8, resistance RA9, resistance RA13, resistance RA14, resistance RA15, capacitance CA7, diode DA1, diode DA2, triode The R stitch of QA2, triode QA3 and interface CON2, the processor U2A connect the R stitch of the processor U2B, three pole One end of the collector of pipe QA2 and the resistance RA8, the emitter connection GND of the triode QA2, the triode QA2's Base stage connects one end of the capacitance CA7, one end of the resistance RA13, one end of the resistance RA14 and the interface respectively The other end of 1 stitch of CON2, the other end of the resistance RA14 and the capacitance CA7 are all connected with GND, the resistance RA13's The other end connects the P5.4/BZ0/PWM0 stitch of the processor U1, and the CP stitch of the processor U2A connects the place respectively Manage CP stitch, one end of the resistance RA9 and the collector of the triode QA3 of device U2B, the transmitting of the triode QA3 Pole connects GND, and the base stage of the triode QA3 connects the P5.3/BZ1/PWM1 stitch of the processor U1, the processor GND stitch, the S stitch of U2A is all connected with GND, the processor U2A'sStitch connects the D stitch of the processor U2A respectively And the cathode of the diode DA2, the anode of the diode DA2 connect 8 stitch of the interface CON2 and the place respectively The Q stitch of device U2B is managed, the Q stitch of the processor U2A connects the D stitch of the processor U2B, the diode DA1 respectively Anode and the interface CON2 9 stitch, the cathode of the diode DA1 connects the processor U2B'sStitch, it is described The S stitch connection GND of processor U2B, the VCC stitch of the processor U2B, the other end of the resistance RA8 and the resistance The other end of RA9 is all connected with VCC+12V, and 2 stitch, 6 stitch of the interface CON2 connect the power protecting circuit, described to connect 3 stitch of mouth CON2 connect the P0.4/RST/VPP stitch of the processor U1, and 4 stitch of the interface CON2 connect the electricity The other end of RA5 is hindered, 5 stitch of the interface CON2 connect the collector of the triode QA1,7 pins of the interface CON2 Foot connects the other end of the resistance RA4.
The present invention further technical solution be:The power protecting circuit includes processor UA3, resistance RA2, resistance RA10, resistance RA11, resistance RA12, capacitance CA5, capacitance CA6, capacitance CA8, capacitance CA9, potentiometer NTC1 and switch SW1, institute The IN stitch for stating processor UA3 connects one end of the resistance RA10, one end of the capacitance CA9 and the interface CON2 respectively 6 stitch, the other end of the resistance RA10 connects one end of the resistance RA11, one end of the capacitance CA5 and institute respectively The P4.0/AIN0/VREFH stitch of processor U1 is stated, the OUT stitch of the processor UA3 connects the one of the capacitance CA6 respectively End, one end of the resistance RA12, one end of the resistance RA2 and VCC+5V, the other end of the resistance RA12 connect respectively The P4.1/AINI stitch of one end of the potentiometer NTC1, one end of the capacitance CA8 and the processor U1, the resistance The other end of RA2 connects one end of the switch SW1, the P1.0/INT1 stitch of the processor U1 and the interface respectively 2 stitch of CON2, the other end of the capacitance CA9, the other end of the resistance RA11, the other end, described of the capacitance CA5 The GND stitch of processor UA3, the other end of the capacitance CA6, the other end of the potentiometer NTC1, the capacitance CA8 it is another The other end of one end and the switch SW1 are all connected with GND.
The present invention further technical solution be:The overload protecting circuit includes operational amplifier UB1, operational amplifier UB2, operational amplifier UB3, operational amplifier UB4, resistance RB3, resistance RB5, resistance RB4, resistance RB7, resistance RB8, resistance RB9, resistance RB10, resistance RB6, resistance RB11, resistance RB12, resistance RB13, resistance RB14, resistance RB15, resistance RB16, electricity Hinder RB17, capacitance CB8, capacitance CB9, capacitance CB1, capacitance CB4, capacitance CB3, capacitance CB5, capacitance CB6, capacitance CB7, slip change Resistance device VR1, there are electrode capacitance CB2, diode DB1, diode DB2, diode DB3, diode DB4, triode QB1, triode 7 stitch of QB2 and interface CON1, the interface CON1 connect the cathode of the diode DB4, the anode of the diode DB4 The output terminal of the anode of the diode DB3, one end of the resistance RB13 and the operational amplifier UB4, institute are connected respectively The in-phase output end for stating operational amplifier UB4 connects the other end of the resistance RB13, one end of the resistance RB6, institute respectively State one end of resistance EB15 and one end of the capacitance CB5, the reverse input end of the operational amplifier UB4 connects described respectively One end of resistance RB14 and one end of the resistance RB6, the other end connection VCC+12V of the resistance RB14, the resistance The other end of the other end of RB16, the other end of the resistance RB15 and the capacitance CB5 is all connected with GND, the resistance RB6's The other end connects the cathode of the diode DB1, and the anode of the diode DB2 connects the output of the operational amplifier UB3 End, the in-phase output end of the operational amplifier UB3 connect the anode for having electrode capacitance CB2 and the resistance RB10 respectively One end, the reverse input end of the operational amplifier UB3 connect one end of the resistance RB12 and the resistance RB11 respectively One end, the power supply of the operational amplifier UB3-, the other end of the resistance RB12 and the cathode for having electrode capacitance CB2 connect GND is met, one end of the other end of the resistance RB11, the power supply+of the operational amplifier UB3 and capacitance CB6 is all connected with VCC+ The other end of the other end connection GND of 12V, the capacitance CB6, the anode of the diode DB1 and the resistance RB10 connect 4 stitch of the interface CON1 are connect, the cathode of the diode DB2 connects one end of the capacitance CB7, the resistance respectively One end of RB17, the in-phase output end of the operational amplifier UB2, the in-phase output end of the operational amplifier UB1 and described The other end of 5 stitch of interface CON1, the other end of the capacitance CB7 and the resistance RB17 are all connected with GND, and the computing is put The reverse input end of big device UB2 connects one end of the resistance RB8, one end of the capacitance CB4 and the triode QB2 respectively Collector, the emitter connection GND of the triode QB2, the base stage of the triode QB2 connects the resistance RB9 respectively One end and the capacitance CB1 one end, the other end of the capacitance CB4 connects one end of the resistance RB4 and described respectively The base stage of triode QB1, the collector of the triode QB1 connect one end of the resistance RB3, the capacitance CB1 respectively The reverse input end of the other end and the operational amplifier UB1, the emitter connection GND of the triode QB1, the resistance The other end of RB4 connects the other end of the resistance RB9 and one end of the slide rheostat VR1, the slip variable resistance respectively The other end and sliding end of device VR1 connects one end of the resistance RB7, and the other end of the resistance RB7 connects the electricity respectively Hinder the other end of RB3, the other end of the resistance RB8, one end of the resistance RB5 and one end of the capacitance CB3, the electricity Hinder the other end connection GND of the other end connection VCC+12V, the capacitance CB3 of RB5, the output terminal of the operational amplifier UB2 One end of the capacitance CB9 and 6 stitch of the interface CON1, the other end connection GND of the capacitance CB9, institute are connected respectively The output terminal for stating operational amplifier UB1 connects one end of the capacitance CB8 and 3 stitch of the interface CON1, the electricity respectively Hold the 1 stitch connection VCC+ of the connection of 2 the stitch GND, the interface CON1 of the other end connection GND, the interface CON1 of CB8 12V。
The beneficial effects of the invention are as follows:By setting processor circuit, control relay circuit, power protection on power supply Circuit and overload protecting circuit can be effectively guaranteed the service life of power supply, and power supply can also be made to use and charge When be less likely to be damaged.
Description of the drawings
Fig. 1 is a kind of modularization block diagram of the protection circuit of emergency power supply provided in an embodiment of the present invention;
Fig. 2 is a kind of electrical schematic diagram of the processor circuit of the protection circuit of emergency power supply provided in an embodiment of the present invention;
Fig. 3 is a kind of electrical principle of the control relay circuit of the protection circuit of emergency power supply provided in an embodiment of the present invention Figure;
Fig. 4 is a kind of power protecting circuit electrical schematic diagram of the protection circuit of emergency power supply provided in an embodiment of the present invention;
Fig. 5 is a kind of electrical schematic diagram of the overload protecting circuit of the protection circuit of emergency power supply provided in an embodiment of the present invention.
Specific embodiment
Fig. 1-5 shows a kind of protection circuit of emergency power supply provided by the invention, and the protection circuit includes processor Circuit connects the control relay circuit of the processor circuit, connects the processor circuit and relay control electricity The power protecting circuit on road, be electrically connected the processor circuit, control relay circuit and power protecting circuit power supply and Connect the overload protecting circuit of the power supply.
The processor circuit includes processor U1, resistance RA1, resistance RA4, resistance RA5, resistance RA6, resistance RA7, electricity Resistance RA3, resistance RA16, capacitance CA1, capacitance CA2, capacitance CA3, capacitance CA10, there are electrode capacitance CA4, crystal oscillator X1 and triode The VCC stitch of QA1, the processor U1 connect one end, described of the anode for having electrode capacitance CA4, the capacitance CA3 respectively One end of resistance RA3 and VCC+5V, the cathode for having electrode capacitance CA4 connect GND, the other end connection of the capacitance CA3 The other end of GND, the resistance RA3 connect one end of the resistance RA6, one end of the capacitance CA10, the processing respectively The P0.4/RST/VPP stitch and the control relay circuit of device U1, the other end connection GND of the resistance RA16, the electricity Hold the other end connection GND of CA10, the P0.3/XIN stitch of the processor U1 connects one end and the institute of the crystal oscillator X1 respectively State one end of capacitance CA1, the other end of the crystal oscillator X1 connects one end of the capacitance CA2 and the processor U1 respectively The other end of P0.2/XOUT stitch, the other end of the capacitance CA1 and the capacitance CA2 are all connected with GND, the processor U1 GND stitch connection GND, the P4.4/AIN4 stitch of the processor U1 connects one end of the resistance RA1, the resistance RA1 The other end connect the base stage of the triode QA1, the emitter connection GND of the triode QA1, the triode QA1's Collector connects the control relay circuit, and the P4.3/AIN3 stitch of the processor U1 connects the one of the resistance RA5 End, the other end of the resistance RA5 connect the control relay circuit, the P4.2/AIN2 stitch difference of the processor U1 Connect one end of the resistance RA6 and one end of the resistance RA7, the other end connection VCC+5V of the resistance RA6, the electricity The P0.0/INT0 stitch for hindering the other end connection GND, the processor U1 of RA7 connects one end of the resistance RA4, the electricity The other end for hindering RA4 connects the control relay circuit.
The control relay circuit includes processor U2A, processor U2B, resistance RA8, resistance RA9, resistance RA13, electricity Hinder RA14, resistance RA15, capacitance CA7, diode DA1, diode DA2, triode QA2, triode QA3 and interface CON2, institute The R stitch for stating processor U2A connects the R stitch of the processor U2B, the collector of the triode QA2 and the resistance RA8 One end, the emitter connection GND of the triode QA2, the base stage of the triode QA2 connects the capacitance CA7's respectively One end, one end of the resistance RA13,1 stitch of one end of the resistance RA14 and the interface CON2, the resistance RA14 The other end and the other end of the capacitance CA7 be all connected with GND, the other end of the resistance RA13 connects the processor U1's P5.4/BZ0/PWM0 stitch, the CP stitch of the processor U2A connect the CP stitch of the processor U2B, the resistance respectively One end of RA9 and the collector of the triode QA3, the emitter connection GND of the triode QA3, the triode QA3's Base stage connects the P5.3/BZ1/PWM1 stitch of the processor U1, and GND stitch, the S stitch of the processor U2A are all connected with GND, the processor U2A'sStitch connects the D stitch of the processor U2A and the cathode of the diode DA2, institute respectively The anode for stating diode DA2 connects 8 stitch of the interface CON2 and the Q stitch of the processor U2B, the processor respectively The Q stitch of U2A connects 9 pins of the D stitch of the processor U2B, the anode of the diode DA1 and the interface CON2 respectively Foot, the cathode of the diode DA1 connect the processor U2B'sStitch, the S stitch connection GND of the processor U2B, The other end of the VCC stitch of the processor U2B, the other end of the resistance RA8 and the resistance RA9 is all connected with VCC+12V, 2 stitch, 6 stitch of the interface CON2 connect the power protecting circuit, and 3 stitch of the interface CON2 connect the processing The P0.4/RST/VPP stitch of device U1,4 stitch of the interface CON2 connect the other end of the resistance RA5, the interface 5 stitch of CON2 connect the collector of the triode QA1, and 7 stitch of the interface CON2 connect the another of the resistance RA4 End.
The power protecting circuit includes processor UA3, resistance RA2, resistance RA10, resistance RA11, resistance RA12, capacitance CA5, capacitance CA6, capacitance CA8, capacitance CA9, potentiometer NTC1 and switch SW1, the IN stitch of the processor UA3 connect respectively 6 stitch of one end of the resistance RA10, one end of the capacitance CA9 and the interface CON2, the resistance RA10's is another End connects the P4.0/AIN0/VREFH of one end of the resistance RA11, one end of the capacitance CA5 and the processor U1 respectively Stitch, the OUT stitch of the processor UA3 connect one end of the capacitance CA6, one end, described of the resistance RA12 respectively One end of resistance RA2 and VCC+5V, the other end of the resistance RA12 connect one end of the potentiometer NTC1, the electricity respectively Hold one end of CA8 and the P4.1/AINI stitch of the processor U1, the other end of the resistance RA2 connect the switch respectively 2 stitch of one end of SW1, the P1.0/INT1 stitch of the processor U1 and the interface CON2, the capacitance CA9's is another End, the other end of the resistance RA11, the other end of the capacitance CA5, the GND stitch of the processor UA3, the capacitance The other end of CA6, the other end of the potentiometer NTC1, the capacitance CA8 the other end and it is described switch SW1 the other end it is equal Connect GND.
The overload protecting circuit is put including operational amplifier UB1, operational amplifier UB2, operational amplifier UB3, computing Big device UB4, resistance RB3, resistance RB5, resistance RB4, resistance RB7, resistance RB8, resistance RB9, resistance RB10, resistance RB6, resistance RB11, resistance RB12, resistance RB13, resistance RB14, resistance RB15, resistance RB16, resistance RB17, capacitance CB8, capacitance CB9, electricity Hold CB1, capacitance CB4, capacitance CB3, capacitance CB5, capacitance CB6, capacitance CB7, slide rheostat VR1, have electrode capacitance CB2, two poles Pipe DB1, diode DB2, diode DB3, diode DB4, triode QB1, triode QB2 and interface CON1, the interface 7 stitch of CON1 connect the cathode of the diode DB4, and the anode of the diode DB4 connects the diode DB3's respectively The output terminal of anode, one end of the resistance RB13 and the operational amplifier UB4, the operational amplifier UB4's is same mutually defeated Outlet connects the other end of the resistance RB13, one end of the resistance RB6, one end of the resistance EB15 and the electricity respectively Hold one end of CB5, the reverse input end of the operational amplifier UB4 connects one end of the resistance RB14 and the resistance respectively One end of RB6, the other end connection VCC+12V, the other end of the resistance RB16, the resistance RB15 of the resistance RB14 The other end of the other end and the capacitance CB5 are all connected with GND, and the other end of the resistance RB6 connects the moon of the diode DB1 Pole, the anode of the diode DB2 connect the output terminal of the operational amplifier UB3, and the operational amplifier UB3's is same mutually defeated Outlet has the anode of electrode capacitance CB2 and one end of the resistance RB10 described in connecting respectively, and the operational amplifier UB3's is reversed Input terminal connects one end of the resistance RB12 and one end of the resistance RB11, the electricity of the operational amplifier UB3 respectively Source-, the other end of the resistance RB12 and the cathode for having electrode capacitance CB2 be all connected with GND, the resistance RB11's is another The one end at end, the power supply+of the operational amplifier UB3 and capacitance CB6 is all connected with VCC+12V, and the other end of the capacitance CB6 connects Meet GND, the other end of the anode of the diode DB1 and the resistance RB10 are all connected with 4 stitch of the interface CON1, described The cathode of diode DB2 connects one end of the capacitance CB7, one end of the resistance RB17, the operational amplifier UB2 respectively In-phase output end, the in-phase output end of the operational amplifier UB1 and 5 stitch of the interface CON1, the capacitance CB7's The other end of the other end and the resistance RB17 are all connected with GND, and the reverse input end of the operational amplifier UB2 connects institute respectively State the collector of one end of resistance RB8, one end of the capacitance CB4 and the triode QB2, the transmitting of the triode QB2 Pole connects GND, and the base stage of the triode QB2 connects one end of the resistance RB9 and one end of the capacitance CB1, institute respectively The other end for stating capacitance CB4 connects one end of the resistance RB4 and the base stage of the triode QB1, the triode QB1 respectively Collector connect the anti-of one end of the resistance RB3, the other end of the capacitance CB1 and the operational amplifier UB1 respectively To input terminal, the emitter connection GND of the triode QB1, the other end of the resistance RB4 connects the resistance RB9 respectively The other end and the slide rheostat VR1 one end, the other end and sliding end of the slide rheostat VR1 connect the electricity Hinder one end of RB7, the other end of the resistance RB7 connect respectively the other end of the resistance RB3, the resistance RB8 it is another The one end at end, one end of the resistance RB5 and the capacitance CB3, the other end connection VCC+12V of the resistance RB5, the electricity Hold the other end connection GND of CB3, the output terminal of the operational amplifier UB2 connects one end of the capacitance CB9 and described respectively 6 stitch of interface CON1, the other end connection GND of the capacitance CB9, the output terminal of the operational amplifier UB1 connect respectively One end of the capacitance CB8 and 3 stitch of the interface CON1, the other end connection GND of the capacitance CB8, the interface The 1 stitch connection VCC+12V of the connection of 2 the stitch GND, the interface CON1 of CON1.
By setting processor circuit, control relay circuit, power protecting circuit and overload protecting circuit on power supply The service life of power supply can be effectively guaranteed, and power supply can also be made to be less likely to be damaged when using and charging.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention All any modification, equivalent and improvement made within refreshing and principle etc., should all be included in the protection scope of the present invention.

Claims (5)

1. a kind of protection circuit of emergency power supply, it is characterised in that:The protection circuit includes processor circuit, connects the place The control relay circuit of device circuit is managed, connects the power protection electricity of the processor circuit and the control relay circuit Road is electrically connected the power supply of the processor circuit, control relay circuit and power protecting circuit and connects the power supply Overload protecting circuit.
2. protection circuit according to claim 1, which is characterized in that the processor circuit includes processor U1, resistance RA1, resistance RA4, resistance RA5, resistance RA6, resistance RA7, resistance RA3, resistance RA16, capacitance CA1, capacitance CA2, capacitance CA3, Capacitance CA10, there are the VCC stitch of electrode capacitance CA4, crystal oscillator X1 and triode QA1, the processor U1 to connect respectively described to have pole The anode of capacitance CA4, one end of the capacitance CA3, one end of the resistance RA3 and VCC+5V, it is described to have bearing for electrode capacitance CA4 Pole connects GND, the other end connection GND of the capacitance CA3, and the other end of the resistance RA3 connects the resistance RA6's respectively One end, one end of the capacitance CA10, the P0.4/RST/VPP stitch of the processor U1 and the control relay circuit, institute State the other end connection GND, the P0.3/XIN of the processor U1 of the other end connection GND, the capacitance CA10 of resistance RA16 Stitch connects one end of the crystal oscillator X1 respectively and one end of the capacitance CA1, the other end of the crystal oscillator X1 connect institute respectively State one end of capacitance CA2 and the P0.2/XOUT stitch of the processor U1, the other end of the capacitance CA1 and the capacitance CA2 The other end be all connected with GND, the P4.4/AIN4 stitch of the connection of GND the stitch GND, the processor U1 of the processor U1 connect One end of the resistance RA1 is connect, the other end of the resistance RA1 connects the base stage of the triode QA1, the triode QA1 Emitter connection GND, the collector of the triode QA1 connects the control relay circuit, the processor U1's P4.3/AIN3 stitch connects one end of the resistance RA5, and the other end of the resistance RA5 connects the control relay circuit, The P4.2/AIN2 stitch of the processor U1 connects one end of the resistance RA6 and one end of the resistance RA7 respectively, described The other end connection GND, the P0.0/INT0 of the processor U1 of the other end connection VCC+5V, the resistance RA7 of resistance RA6 Stitch connects one end of the resistance RA4, and the other end of the resistance RA4 connects the control relay circuit.
3. protection circuit according to claim 1, which is characterized in that the control relay circuit include processor U2A, Processor U2B, resistance RA8, resistance RA9, resistance RA13, resistance RA14, resistance RA15, capacitance CA7, diode DA1, diode DA2, triode QA2, the R stitch of triode QA3 and interface CON2, the processor U2A connect the R pins of the processor U2B One end of foot, the collector of the triode QA2 and the resistance RA8, the emitter of the triode QA2 connects GND, described The base stage of triode QA2 connects one end of the capacitance CA7, one end of the resistance RA13, the one of the resistance RA14 respectively The other end of end and 1 stitch of the interface CON2, the other end of the resistance RA14 and the capacitance CA7 are all connected with GND, institute The other end for stating resistance RA13 connects the P5.4/BZ0/PWM0 stitch of the processor U1, the CP stitch point of the processor U2A The collector of the CP stitch of the processor U2B, one end of the resistance RA9 and the triode QA3, three pole are not connected The base stage of emitter the connection GND, the triode QA3 of pipe QA3 connect the P5.3/BZ1/PWM1 stitch of the processor U1, GND stitch, the S stitch of the processor U2A is all connected with GND, the processor U2A'sExplanation: D:\CPC\cases\inventions\bc3b7760-5a2f-4880-801b-99ade30d14c0\new\100001\dest_path_image002.jpgStitch connects the processor respectively The cathode of the D stitch of U2A and the diode DA2, the anode of the diode DA2 connect 8 pins of the interface CON2 respectively The Q stitch of foot and the processor U2B, the Q stitch of the processor U2A connect the D stitch of the processor U2B, institute respectively The anode of diode DA1 and 9 stitch of the interface CON2 are stated, the cathode of the diode DA1 connects the processor U2B'sExplanation: D:\CPC\cases\inventions\bc3b7760-5a2f-4880-801b-99ade30d14c0\new\100001\dest_path_image002a.jpgStitch, the S stitch connection GND of the processor U2B, the VCC stitch of the processor U2B, the other end of the resistance RA8 And the other end of the resistance RA9 is all connected with VCC+12V, 2 stitch, 6 stitch of the interface CON2 connect the power protection Circuit, 3 stitch of the interface CON2 connect the P0.4/RST/VPP stitch of the processor U1,4 pins of the interface CON2 Foot connects the other end of the resistance RA5, and 5 stitch of the interface CON2 connect the collector of the triode QA1, described to connect 7 stitch of mouth CON2 connect the other end of the resistance RA4.
4. protection circuit according to claim 3, which is characterized in that the power protecting circuit includes processor UA3, electricity Hinder RA2, resistance RA10, resistance RA11, resistance RA12, capacitance CA5, capacitance CA6, capacitance CA8, capacitance CA9, potentiometer NTC1 and SW1 is switched, the IN stitch of the processor UA3 connects one end of the resistance RA10, one end of the capacitance CA9 and institute respectively 6 stitch of interface CON2 are stated, the other end of the resistance RA10 connects one end of the resistance RA11, the capacitance CA5 respectively One end and the processor U1 P4.0/AIN0/VREFH stitch, the OUT stitch of the processor UA3 connects described respectively One end of capacitance CA6, one end of the resistance RA12, one end of the resistance RA2 and VCC+5V, the resistance RA12's is another End connects the P4.1/AINI pins of one end of the potentiometer NTC1, one end of the capacitance CA8 and the processor U1 respectively Foot, the other end of the resistance RA2 connect respectively one end of the switch SW1, the processor U1 P1.0/INT1 stitch and 2 stitch of the interface CON2, the other end of the capacitance CA9, the other end of the resistance RA11, the capacitance CA5 it is another One end, the GND stitch of the processor UA3, the other end of the capacitance CA6, the other end of the potentiometer NTC1, the electricity The other end of the other end and the switch SW1 that hold CA8 is all connected with GND.
5. protection circuit according to claim 1, which is characterized in that the overload protecting circuit includes operational amplifier UB1, operational amplifier UB2, operational amplifier UB3, operational amplifier UB4, resistance RB3, resistance RB5, resistance RB4, resistance RB7, resistance RB8, resistance RB9, resistance RB10, resistance RB6, resistance RB11, resistance RB12, resistance RB13, resistance RB14, resistance RB15, resistance RB16, resistance RB17, capacitance CB8, capacitance CB9, capacitance CB1, capacitance CB4, capacitance CB3, capacitance CB5, capacitance CB6, capacitance CB7, slide rheostat VR1, there are electrode capacitance CB2, diode DB1, diode DB2, diode DB3, diode DB4, triode QB1,7 stitch of triode QB2 and interface CON1, the interface CON1 connect the cathode of the diode DB4, The anode of the diode DB4 connects the anode of the diode DB3, one end of the resistance RB13 and the computing and puts respectively The output terminal of big device UB4, the in-phase output end of the operational amplifier UB4 connect the other end of the resistance RB13, institute respectively One end of one end of resistance RB6, one end of the resistance EB15 and the capacitance CB5 is stated, the operational amplifier UB4's is reversed Input terminal connects one end of the resistance RB14 and one end of the resistance RB6, the other end connection of the resistance RB14 respectively VCC+12V, the other end of the other end of the resistance RB16, the other end of the resistance RB15 and the capacitance CB5 are all connected with The other end of GND, the resistance RB6 connect the cathode of the diode DB1, and the anode of the diode DB2 connects the fortune Calculate the output terminal of amplifier UB3, the in-phase output end of the operational amplifier UB3 connects respectively described is having electrode capacitance CB2 just Pole and one end of the resistance RB10, the reverse input end of the operational amplifier UB3 connect the one of the resistance RB12 respectively End and one end of the resistance RB11, the power supply of the operational amplifier UB3-, the other end of the resistance RB12 and described have The cathode of electrode capacitance CB2 is all connected with GND, the other end of the resistance RB11, the power supply+and capacitance of the operational amplifier UB3 One end of CB6 is all connected with VCC+12V, the other end connection GND of the capacitance CB6, the anode and the electricity of the diode DB1 The other end of resistance RB10 is all connected with 4 stitch of the interface CON1, and the cathode of the diode DB2 connects the capacitance respectively One end of CB7, one end of the resistance RB17, the in-phase output end of the operational amplifier UB2, the operational amplifier UB1 In-phase output end and the interface CON1 5 stitch, the other end of the other end of the capacitance CB7 and the resistance RB17 is equal Connect GND, the reverse input end of the operational amplifier UB2 connects one end of the resistance RB8, the capacitance CB4 respectively One end and the collector of the triode QB2, the emitter connection GND of the triode QB2, the base stage of the triode QB2 Connect one end of the resistance RB9 and one end of the capacitance CB1 respectively, the other end of the capacitance CB4 connects described respectively One end of resistance RB4 and the base stage of the triode QB1, the collector of the triode QB1 connect the resistance RB3's respectively The reverse input end of one end, the other end of the capacitance CB1 and the operational amplifier UB1, the emitter of the triode QB1 Connect GND, the other end of the resistance RB4 connect respectively the resistance RB9 the other end and the slide rheostat VR1 one End, the other end and sliding end of the slide rheostat VR1 connect one end of the resistance RB7, the other end of the resistance RB7 The other end of the resistance RB3, the other end of the resistance RB8, one end of the resistance RB5 and the capacitance are connected respectively One end of CB3, the other end connection GND of the other end connection VCC+12V, the capacitance CB3 of the resistance RB5, the computing The output terminal of amplifier UB2 connects one end of the capacitance CB9 and 6 stitch of the interface CON1 respectively, the capacitance CB9's The other end connects GND, and the output terminal of the operational amplifier UB1 connects one end of the capacitance CB8 and the interface respectively 3 stitch of CON1, the 2 stitch connection GND of the other end connection GND, the interface CON1 of the capacitance CB8, the interface The 1 stitch connection VCC+12V of CON1.
CN201711407132.6A 2017-12-22 2017-12-22 Protection circuit of emergency power supply Active CN108075543B (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203278308U (en) * 2013-05-02 2013-11-06 杭州电子科技大学 Mini large-power multifunctional environment-protective mobile power supply
CN104410049A (en) * 2014-11-26 2015-03-11 成都创图科技有限公司 Automatic power source turning on-off circuit with overvoltage and overcurrent protection circuit
CN205544228U (en) * 2016-03-04 2016-08-31 河北实华科技有限公司 Retrieval type safety protection power supply circuit
CN107482586A (en) * 2017-08-23 2017-12-15 苏州麦喆思科电子有限公司 A kind of overload protecting circuit of Switching Power Supply
CN207652092U (en) * 2017-12-22 2018-07-24 东莞市辉豪电器制品有限公司 A kind of protection circuit of emergency power supply

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203278308U (en) * 2013-05-02 2013-11-06 杭州电子科技大学 Mini large-power multifunctional environment-protective mobile power supply
CN104410049A (en) * 2014-11-26 2015-03-11 成都创图科技有限公司 Automatic power source turning on-off circuit with overvoltage and overcurrent protection circuit
CN205544228U (en) * 2016-03-04 2016-08-31 河北实华科技有限公司 Retrieval type safety protection power supply circuit
CN107482586A (en) * 2017-08-23 2017-12-15 苏州麦喆思科电子有限公司 A kind of overload protecting circuit of Switching Power Supply
CN207652092U (en) * 2017-12-22 2018-07-24 东莞市辉豪电器制品有限公司 A kind of protection circuit of emergency power supply

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