CN103607016A - Non-polarity automatic judgment charging circuit and charger - Google Patents

Non-polarity automatic judgment charging circuit and charger Download PDF

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Publication number
CN103607016A
CN103607016A CN201310631795.1A CN201310631795A CN103607016A CN 103607016 A CN103607016 A CN 103607016A CN 201310631795 A CN201310631795 A CN 201310631795A CN 103607016 A CN103607016 A CN 103607016A
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pin
resistance
relay
triode
capacitor
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CN201310631795.1A
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CN103607016B (en
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叶远军
范振明
洪桂明
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SHANGHAI GUANGWEI ELECTRIC CO Ltd
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SHANGHAI GUANGWEI ELECTRIC CO Ltd
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Abstract

The invention discloses a non-polarity automatic judgment charging circuit. The non-polarity automatic judgment charging circuit comprises a relay K1, a relay K2A, a triode Q1, a triode Q2, a single-chip microcomputer IC1, an optocoupler IC2, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a diode D1, a capacitor C1, a capacitor C2 and a capacitor C3. The invention further provides a charger comprising the non-polarity automatic judgment charging circuit. According to the non-polarity automatic judgment charging circuit, the optocoupler is adopted for feedback, the polarity of a battery is judged in combination with the single-chip microcomputer, whether the battery exists can be detected automatically, the positive polarity and negative polarity of the battery connected with the non-polarity automatic judgment charging circuit also can be judged when the non-polarity automatic judgment charging circuit is connected with the battery, and the battery can operate normally whether the battery is in forward connection or reverse connection; the non-polarity automatic judgment charging circuit can effectively protect the battery and the charger by means of precise detection and feedback, is high in efficiency, saves energy, and is safe and intelligent to use and high in operability.

Description

A kind of nonpolarity automatic decision charging circuit and charger
Technical field
The present invention relates to circuit engineering field, specifically, is a kind of nonpolarity automatic decision charging circuit and the charger that contains this circuit.
Background technology
General traditional battery charger output is mainly comprised of the fairly simple control circuit of single relay, diode and MOSFET.Traditional charger output both positive and negative polarity must connect correctly, otherwise just can not charge or can damage charger, and diode temperature is high causes loss larger.This control circuit has output once powering on, must first connect after storage battery and just can start charger, connects storage battery after charger again can produce spark if first start.Whether the polarity that simultaneously will carefully check storage battery connects instead, even if use this kind of charging circuit, reliability, fail safe and operability reduce greatly, is easy to cause short circuit more can not charge by automatic decision.Therefore the charger that, urgent need is wanted a kind of automatic decision charging circuit and contained this charging circuit.Chinese patent literature: application number 201110291199.4, open day on July 11st, 2012, disclose a kind of circuit of nonpolar safety charger, it is to comprise bipolarity identification circuit and rectification polarity switching between power transformer output and two charging electrodes.About charging circuit of the present invention and the charger that contains this charging circuit, yet there are no report.
Summary of the invention
The object of the invention is for deficiency of the prior art, a kind of nonpolarity automatic decision charging circuit is provided.The polarity of this charging circuit energy automatic decision battery, no matter make storage battery is just to connect or reversal connection all can work.
Another object of the present invention is that a kind of charger that contains nonpolarity automatic decision charging circuit is provided.
For realizing above-mentioned first object, the technical scheme that the present invention takes is:
A nonpolarity automatic decision charging circuit, described charging circuit comprises relay K 1, relay K 2A, triode Q1, triode Q2, single-chip microcomputer IC1, optocoupler IC2, resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6, diode D1, capacitor C 1, capacitor C 2 and capacitor C 3;
One end of one end of one end of described resistance R 1, resistance R 2, capacitor C 2 connects 2 pin of single-chip microcomputer IC1, one end of described resistance R 4 connects 1 pin of single-chip microcomputer IC1, one end of described resistance R 5 connects 3 pin of single-chip microcomputer IC1, one end of described resistance R 6 connects 4 pin of single-chip microcomputer IC1,5 pin of single-chip microcomputer IC1 connect, the 6 pin connection+5V power supplys of single-chip microcomputer IC1, the other end the ground connection of the other end contact resistance R2 of capacitor C 2; The other end of the base stage contact resistance R4 of described triode Q1, the grounded emitter of triode Q1, collector connection relay K1 coil 1 pin of triode Q1, the other end of the base stage contact resistance R5 of described triode Q2, the grounded emitter of triode Q2, collector connection relay K2A coil 8 pin of triode Q2; One end of the anode 1 pin contact resistance R3 of light-emitting diode in described optocoupler IC2, in optocoupler IC2, negative electrode 2 pin of light-emitting diode connect the anode of diode D1, the other end of the output 3 pin contact resistance R6 of optocoupler IC2, the 4 pin connection+5V power supplys of optocoupler IC2; Described relay K 1 coil 2 pin connection+12V power supplys, 3 pin of relay K 1 are connected one end of input filtering capacitor C 1 with 4 pin, the other end ground connection of capacitor C 1,5 other ends of pin contact resistance R1 and 2 pin of relay K 2A and 3 pin of relay K 1, relay K 2A coil 7 pin connection+12V power supplys, 1 pin of relay K 2A and 4 pin ground connection, 5 pin of relay K 2A connect one end of output filter capacitor C3 and the negative electrode of diode D1, and 6 pin of relay K 2A connect the other end of output filter capacitor C3 and the other end of resistance R 3.
Further, described triode Q1 and triode Q2 are NPN type triode.
For realizing above-mentioned second object, the technical scheme that the present invention takes is:
A kind of charger that contains nonpolarity automatic decision charging circuit, comprise voltage input end mouth, Voltage-output port and charging circuit, described charging circuit comprises relay K 1, relay K 2A, triode Q1, triode Q2, single-chip microcomputer IC1, optocoupler IC2, resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6, diode D1, capacitor C 1, capacitor C 2 and capacitor C 3;
One end of one end of one end of described resistance R 1, resistance R 2, capacitor C 2 connects 2 pin of single-chip microcomputer IC1, one end of described resistance R 4 connects 1 pin of single-chip microcomputer IC1, one end of described resistance R 5 connects 3 pin of single-chip microcomputer IC1, one end of described resistance R 6 connects 4 pin of single-chip microcomputer IC1,5 pin of single-chip microcomputer IC1 connect, the 6 pin connection+5V power supplys of single-chip microcomputer IC1, the other end the ground connection of the other end contact resistance R2 of capacitor C 2; The other end of the base stage contact resistance R4 of described triode Q1, the grounded emitter of triode Q1, collector connection relay K1 coil 1 pin of triode Q1, the other end of the base stage contact resistance R5 of described triode Q2, the grounded emitter of triode Q2, collector connection relay K2A coil 8 pin of triode Q2; One end of the anode 1 pin contact resistance R3 of light-emitting diode in described optocoupler IC2, in optocoupler IC2, negative electrode 2 pin of light-emitting diode connect the anode of diode D1, the other end of the output 3 pin contact resistance R6 of optocoupler IC2, the 4 pin connection+5V power supplys of optocoupler IC2; Described relay K 1 coil 2 pin connection+12V power supplys, 3 pin of relay K 1 are connected one end of input filtering capacitor C 1 with 4 pin, the other end ground connection of capacitor C 1,5 other ends of pin contact resistance R1 and 2 pin of relay K 2A and 3 pin of relay K 1, relay K 2A coil 7 pin connection+12V power supplys, 1 pin of relay K 2A and 4 pin ground connection, 5 pin of relay K 2A connect one end of output filter capacitor C3 and the negative electrode of diode D1, and 6 pin of relay K 2A connect the other end of output filter capacitor C3 and the other end of resistance R 3.
Further, described triode Q1 and triode Q2 are NPN type triode.
Further, described charger also comprises binding post JP1.
Further, the 1 pin ground connection of described binding post JP1,2 pin connection+5V power supplys, 3 pin connection+12V power supplys.
The invention has the advantages that:
1, the nonpolarity automatic decision charging circuit of the present invention adopts optocoupler feedback, in conjunction with single-chip microcomputer, judge the polarity of battery, can automatically detect and have or not battery, can also judge the positive and negative polarity of its connection while being connected with battery, no matter battery is just to connect or reversal connection all can work;
2, charging circuit is detected, is fed back by accurate, can effectively protect battery and charger itself, energy-efficient, uses safe and intelligent, workable.
Accompanying drawing explanation
Accompanying drawing 1 is the structured flowchart of a kind of nonpolarity automatic decision charging circuit provided by the invention.
Accompanying drawing 2 is circuit theory diagrams of a kind of nonpolarity automatic decision charging circuit provided by the invention.
Embodiment
Below in conjunction with accompanying drawing, embodiment provided by the invention is elaborated.
embodiment 1
Please refer to Fig. 1, Fig. 1 is the structured flowchart of nonpolarity automatic decision charging circuit, after battery access, by sampling feedback circuit to single-chip microcomputer signal, the inner computing automatically of single-chip microcomputer judges whether charging or the reverse of polarity, whether single-chip microcomputer sends signal to control circuit, determine to charge or the polarity at no conversion output two ends.
Please refer to Fig. 2, Fig. 2 is the circuit theory diagrams of nonpolarity automatic decision charging circuit.This charging circuit comprises relay K 1, relay K 2A, triode Q1, triode Q2, single-chip microcomputer IC1, optocoupler IC2, resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6, diode D1, capacitor C 1, capacitor C 2 and capacitor C 3.Described triode Q1 and triode Q2 are preferably NPN type triode.
One end of one end of one end of resistance R 1, resistance R 2, capacitor C 2 connects 2 pin of single-chip microcomputer IC1, one end of resistance R 4 connects 1 pin of single-chip microcomputer IC1, one end of resistance R 5 connects 3 pin of single-chip microcomputer IC1, one end of resistance R 6 connects 4 pin of single-chip microcomputer IC1,5 pin of single-chip microcomputer IC1 connect, the 6 pin connection+5V power supplys of single-chip microcomputer IC1.The other end the ground connection of the other end contact resistance R2 of capacitor C 2.
The other end of the base stage contact resistance R4 of triode Q1, the grounded emitter of triode Q1, collector connection relay K1 coil 1 pin of triode Q1.The other end of the base stage contact resistance R5 of triode Q2, the grounded emitter of triode Q2, collector connection relay K2A coil 8 pin of triode Q2.One end of the anode 1 pin contact resistance R3 of light-emitting diode in optocoupler IC2, in optocoupler IC2, negative electrode 2 pin of light-emitting diode connect the anode of diode D1, the other end of the output 3 pin contact resistance R6 of optocoupler IC2, the 4 pin connection+5V power supplys of optocoupler IC2.
Relay K 1 coil 2 pin connection+12V power supplys, 3 pin of relay K 1 are connected one end of input filtering capacitor C 1, the other end ground connection of capacitor C 1 with 4 pin.The two ends of capacitor C 1 connect respectively vin+ and vin ﹣.5 other ends of pin contact resistance R1 and 2 pin of relay K 2A and 3 pin of relay K 1.Relay K 2A coil 7 pin connection+12V power supplys, 1 pin of relay K 2A and 4 pin ground connection, 5 pin of relay K 2A connect one end of output filter capacitor C3 and the negative electrode of diode D1, and 6 pin of relay K 2A connect the other end of output filter capacitor C3 and the other end of resistance R 3.The two ends of capacitor C 3 connect respectively battery the two poles of the earth incoming end B1 and B2.
The operation principle of charging circuit of the present invention:
(1) when B1 termination anode, B2 termination battery cathode
At this moment relay K 2A is in normally off, the proper voltage of B1 leads to one end of resistance R 1 by 5 pin and 3 pin of relay K 2A, B2 end negative voltage leads to one end of resistance R 2 by 6 pin and the 4 pin ground connection of relay K 2A, resistance R 1 is series relationship with resistance R 2, in the middle of two resistance, can get a voltage, this voltage makes its two ends get a clean smoothly sampled voltage signal to 2 pin of single-chip microcomputer IC1 by filter capacitor C2.When 2 pin of single-chip microcomputer IC1 detect a signal, its inner can automatic computing whether will charging the battery.
If need charging, single-chip microcomputer IC1 sends one and controls high potential signal through the base stage of resistance R 4 to triode Q1, turn-on transistor Q1, make 1 pin and 2 pin of relay K 1 coil have electric current to flow through, 3 pin of relay K 1 and 5 pin are connected, at this moment 3 pin of 3 pin of vin+ voltage process relay K 1 and 5 pin, relay K 2A and 5 pin are connected to B1 end, the i.e. positive pole of battery.B2 end simultaneously, i.e. the negative pole of battery, 6 pin and 4 pin ground connection by relay K 2A, meet charging current loop, charges the battery.
If do not need charging, single-chip microcomputer IC1 sends one and controls high potential signal to triode Q1, and triode Q1 cutoff relay K1, makes 3 pin and the 5 not adhesives of pin of relay K 1, and therefore, vin+ voltage disconnects, and does not meet charge condition.
(2) when B1 termination battery cathode, B2 termination anode
At this moment B1 end negative voltage leads to one end of resistance R 1 by 5 pin and 3 pin of relay K 2A, B2 rectifies voltage by 6 pin and the 4 pin ground connection of relay K 2A, and due to anode ground connection, resistance R 1 and resistance R 2 minutes are less than reference voltage, charge condition does not meet, and wouldn't start charging.
An other road sampled voltage flows through rapidly 1 pin of optocoupler IC2 by resistance R 3, diode D1 makes optocoupler IC2 conducting.When 1 pin of optocoupler IC2 and 2 pin have electric current to flow through, 3 pin of optocoupler IC2 and 4 pin meeting conducting, once conducting 4 pin+5V voltage is given the signal of a battery polar reversal connection of 4 pin transmission of single-chip microcomputer IC1 by resistance R 6.When 4 pin of single-chip microcomputer IC1 have detected polar signal, single-chip microcomputer IC1 exports reverse of polarity high potential signal by the base stage of resistance R 5 to triode Q2 at once, makes triode Q2 conducting.After triode Q2 conducting, 7 pin of relay K 2A and 8 pin can form current circuit to ground connection by the collector electrode of triode Q2, produce magnetic field, make relay K 2A conversion contact contact, and 5 pin of relay K 2A and 1 pin are connected, and 6 pin and 2 pin are connected.Due to polarity conversion, the proper voltage of B2 is connected to resistance R 1 one end by 6 pin and 2 pin of relay K 2A, B1 end negative voltage is connected to resistance R 2 one end by 5 pin and 1 pin of relay K 2A, in the middle of resistance R 1 and resistance R 2, can get a sampled voltage to 2 pin of single-chip microcomputer IC2,2 pin of single-chip microcomputer IC2 ceaselessly detect battery-charge signal.When charging signals meets, single-chip microcomputer IC1 sends one and controls high potential signal through the base stage of resistance R 4 to triode Q1, turn-on transistor Q1, make 1 pin and 2 pin of relay K 1 coil have electric current to flow through, 3 pin of relay K 1 and 5 pin are connected, at this moment 2 pin of 3 pin of vin+ voltage process relay K 1 and 5 pin, relay K 2A and 6 pin are connected to B2 end, the i.e. positive pole of battery.B1 end simultaneously, i.e. the negative pole of battery, 5 pin and 1 pin ground connection by relay K 2A, meet charging current loop, charges the battery.
embodiment 2
A charger that contains nonpolarity automatic decision charging circuit, comprises voltage input end mouth vin+ and vin ﹣, Voltage-output port B1 and B2 and charging circuit, refers to Fig. 1, and described charging circuit as described in Example 1.Wherein, triode Q1 and triode Q2 are preferably NPN type triode.Charger also comprises binding post JP1, the 1 pin ground connection of binding post JP1,2 pin connection+5V power supplys, 3 pin connection+12V power supplys.
This charger in use can automatically detect and have or not connection battery, can also judge the positive and negative polarity of its connection while being connected with battery, and no matter battery is just to connect or reversal connection all can work.By accurate detection, feedback, can effectively protect battery and charger itself, there will not be short circuit, energy-efficient, use safe and intelligent, workable.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the inventive method; can also make some improvement and supplement, these improvement and supplement and also should be considered as protection scope of the present invention.

Claims (6)

1. a nonpolarity automatic decision charging circuit, it is characterized in that, described charging circuit comprises relay K 1, relay K 2A, triode Q1, triode Q2, single-chip microcomputer IC1, optocoupler IC2, resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6, diode D1, capacitor C 1, capacitor C 2 and capacitor C 3;
One end of one end of one end of described resistance R 1, resistance R 2, capacitor C 2 connects 2 pin of single-chip microcomputer IC1, one end of described resistance R 4 connects 1 pin of single-chip microcomputer IC1, one end of described resistance R 5 connects 3 pin of single-chip microcomputer IC1, one end of described resistance R 6 connects 4 pin of single-chip microcomputer IC1,5 pin of single-chip microcomputer IC1 connect, the 6 pin connection+5V power supplys of single-chip microcomputer IC1, the other end the ground connection of the other end contact resistance R2 of capacitor C 2; The other end of the base stage contact resistance R4 of described triode Q1, the grounded emitter of triode Q1, collector connection relay K1 coil 1 pin of triode Q1, the other end of the base stage contact resistance R5 of described triode Q2, the grounded emitter of triode Q2, collector connection relay K2A coil 8 pin of triode Q2; One end of the anode 1 pin contact resistance R3 of light-emitting diode in described optocoupler IC2, in optocoupler IC2, negative electrode 2 pin of light-emitting diode connect the anode of diode D1, the other end of the output 3 pin contact resistance R6 of optocoupler IC2, the 4 pin connection+5V power supplys of optocoupler IC2; Described relay K 1 coil 2 pin connection+12V power supplys, 3 pin of relay K 1 are connected one end of input filtering capacitor C 1 with 4 pin, the other end ground connection of capacitor C 1,5 other ends of pin contact resistance R1 and 2 pin of relay K 2A and 3 pin of relay K 1, relay K 2A coil 7 pin connection+12V power supplys, 1 pin of relay K 2A and 4 pin ground connection, 5 pin of relay K 2A connect one end of output filter capacitor C3 and the negative electrode of diode D1, and 6 pin of relay K 2A connect the other end of output filter capacitor C3 and the other end of resistance R 3.
2. nonpolarity automatic decision charging circuit according to claim 1, is characterized in that, described triode Q1 and triode Q2 are NPN type triode.
3. a charger that contains nonpolarity automatic decision charging circuit, comprise voltage input end mouth, Voltage-output port and charging circuit, it is characterized in that, described charging circuit comprises relay K 1, relay K 2A, triode Q1, triode Q2, single-chip microcomputer IC1, optocoupler IC2, resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6, diode D1, capacitor C 1, capacitor C 2 and capacitor C 3;
One end of one end of one end of described resistance R 1, resistance R 2, capacitor C 2 connects 2 pin of single-chip microcomputer IC1, one end of described resistance R 4 connects 1 pin of single-chip microcomputer IC1, one end of described resistance R 5 connects 3 pin of single-chip microcomputer IC1, one end of described resistance R 6 connects 4 pin of single-chip microcomputer IC1,5 pin of single-chip microcomputer IC1 connect, the 6 pin connection+5V power supplys of single-chip microcomputer IC1, the other end the ground connection of the other end contact resistance R2 of capacitor C 2; The other end of the base stage contact resistance R4 of described triode Q1, the grounded emitter of triode Q1, collector connection relay K1 coil 1 pin of triode Q1, the other end of the base stage contact resistance R5 of described triode Q2, the grounded emitter of triode Q2, collector connection relay K2A coil 8 pin of triode Q2; One end of the anode 1 pin contact resistance R3 of light-emitting diode in described optocoupler IC2, in optocoupler IC2, negative electrode 2 pin of light-emitting diode connect the anode of diode D1, the other end of the output 3 pin contact resistance R6 of optocoupler IC2, the 4 pin connection+5V power supplys of optocoupler IC2; Described relay K 1 coil 2 pin connection+12V power supplys, 3 pin of relay K 1 are connected one end of input filtering capacitor C 1 with 4 pin, the other end ground connection of capacitor C 1,5 other ends of pin contact resistance R1 and 2 pin of relay K 2A and 3 pin of relay K 1, relay K 2A coil 7 pin connection+12V power supplys, 1 pin of relay K 2A and 4 pin ground connection, 5 pin of relay K 2A connect one end of output filter capacitor C3 and the negative electrode of diode D1, and 6 pin of relay K 2A connect the other end of output filter capacitor C3 and the other end of resistance R 3.
4. charger according to claim 3, is characterized in that, described triode Q1 and triode Q2 are NPN type triode.
5. charger according to claim 3, is characterized in that, described charger also comprises binding post JP1.
6. charger according to claim 5, is characterized in that, the 1 pin ground connection of described binding post JP1,2 pin connection+5V power supplys, 3 pin connection+12V power supplys.
CN201310631795.1A 2013-12-02 2013-12-02 Non-polarity automatic judgment charging circuit and charger Active CN103607016B (en)

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CN105591429A (en) * 2015-12-31 2016-05-18 深圳市华思旭科技有限公司 Wire-connection automatic control device
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CN113922473A (en) * 2021-12-13 2022-01-11 深圳市永联科技股份有限公司 Charging protection circuit unit and related product
CN114336904A (en) * 2022-03-16 2022-04-12 安翰科技(武汉)股份有限公司 Charging circuit and charging device for in-vivo electronic equipment and capsule endoscope charging system

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