CN102570443B - Anti-reverse connection protection circuit of solar charging controller - Google Patents
Anti-reverse connection protection circuit of solar charging controller Download PDFInfo
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- CN102570443B CN102570443B CN201010610569.1A CN201010610569A CN102570443B CN 102570443 B CN102570443 B CN 102570443B CN 201010610569 A CN201010610569 A CN 201010610569A CN 102570443 B CN102570443 B CN 102570443B
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Abstract
The invention relates to an anti-reverse connection protection circuit of a solar charging controller. The anti-reverse connection protection circuit is provided with a solar battery, a storage battery, a fuse wire, a microprocessor unit, a first power supply unit, a second power supply unit, a first drive unit, a second drive unit, an MOSFET (metal oxide semiconductor field effect transistor) tube Q1, an MOSFET tube Q2, a diode D1, a diode D2, a solar battery reverse connection detection unit and a storage battery reverse connection detection unit. According to the anti-reverse connection protection circuit, a protection function can be immediately produced when positive and negative electrodes of the solar battery are reversely connected or positive and negative electrodes of the storage battery are reversely connected by the solar battery reverse connection detection unit and the storage battery reverse connection detection unit as well as the first drive unit and the second drive unit, so that the accident of reverse charging of the solar battery on the storage battery is avoided, and the safety of the storage battery, the solar battery and the solar charging controller as well as the people is effectively protected. The anti-reverse connection protection circuit is simple in structure, complete in protection function and good in effect, and has double anti-reverse connection protection functions.
Description
Technical field
The present invention relates to solar charging controller technology, particularly relate to a kind of reverse connection prevention protection circuit of solar charging controller.
Background technology
Solar charging controller is controlled to the whole process of battery charging process for solar cell, in use, if misoperation, cause the accumulator positive of controller input, negative polarity reversal connection, or the solar cell of controller input just, negative polarity reversal connection, or both just, negative polarity reversal connection simultaneously, like this in charging process, can cause solar cell storage battery to be carried out to the generation of reverse charging accident, the consequence causing is, gently damage storage battery, heavy produce strong sparkover, have a strong impact on the useful life of storage battery, more serious meeting causes that storage battery is overheated blasts, very easily cause any property loss and the generation of personal safety accident.And current existing solar charging controller does not all have the reverse connecting protection measure of this respect, there is potential safety hazard.
Not enough for prior art, therefore provide a kind of reverse connection prevention protection circuit of solar charging controller very necessary to solve prior art deficiency.
Summary of the invention
The reverse connection prevention protection circuit that the object of the invention is to avoid the deficiencies in the prior art part and a kind of solar charging controller is provided.
Object of the present invention realizes by following technical measures.
A reverse connection prevention protection circuit for solar charging controller, is provided with solar cell, storage battery, fuse, microprocessor unit, the first power subsystem, second source unit, the first driver element, the second driver element, MOSFET pipe Q1, MOSFET pipe Q2, diode D1, diode D2, solar cell reversal connection detecting unit and reverse connection of accumulator detecting unit;
910 ends of 810 ends of the anodal S+ of solar cell, solar energy reversal connection detecting unit, the positive pole of diode D2, the positive pole of D1, reverse connection of accumulator detecting unit are connected with one end of fuse, and the other end of fuse is connected with the anodal B+ of storage battery;
830 ends of solar cell reversal connection detecting unit are connected with 320 ends of microprocessor unit, and the negative pole of diode D2 is connected with 510 ends of second source unit, and 530 ends of second source unit are connected with 710 ends of the second driver element;
310 ends of microprocessor unit are connected with 430 ends of the first power subsystem, and 330 ends of microprocessor are connected with 720 ends of 620 ends of the first driver element, the second driver element;
730 ends of the second driver element are connected with 930 ends of reverse connection of accumulator detecting unit, and 740 ends of the second driver element are connected with the grid of MOSFT pipe Q2;
MOSFET manages the source electrode of Q2,520 ends of the first power subsystem, 820 ends of solar cell reversal connection detecting unit and the negative pole S-of solar cell are connected;
The drain electrode of MOSFET pipe Q2 is connected with the drain electrode of MOSFET pipe Q1, and 620 ends of the first driver element are connected with the grid of MOSFET pipe Q1;
The negative pole of diode D1 is connected with 410 ends of the first power subsystem, and 440 ends of the first power subsystem are connected with 610 ends of the first driver element,
420 ends of the first power subsystem, the MOSFET pipe source electrode of Q1,920 ends of reverse connection of accumulator detecting unit are connected with the negative pole BGND of storage battery;
Described solar cell reversal connection detecting unit is provided with the even U1 of light, resistance R 1 and resistance R 2, even 1 pin of U1 of light and the negative pole S-of solar cell are connected, 2 pin of the even U1 of light are connected with one end of resistance R 1, the other end of resistance R 1 is connected with the anodal S+ of solar cell, even 3 pin of U1 of light and the negative pole BGND of storage battery are connected, one end of resistance R 2 is connected with power supply+VB2,4 pin of the other end of resistance R 2, the even U1 of light are connected with output signal end PVInverseFlag, and output signal end PVInverseFlag is connected with 320 ends of microprocessor unit;
Described reverse connection of accumulator detecting unit is provided with the even U2 of light, resistance R 7 and diode D6,1 pin of the even U2 of light is connected with battery terminal negative BGND, one end of resistance R 7 is connected with the anodal B+ of storage battery, resistance R 7 other ends are connected with 2 pin of the even U2 of light, 3 pin of the even U2 of light are connected with the positive pole of diode D6, the negative pole of diode D6 is connected with the negative pole S-of solar cell, 4 pin of the even U2 of light are connected with output signal end BattInverseFlag, and output signal end BattInverseFlag is connected with 730 ends of the second driver element;
Described the first driver element is provided with resistance R 3, resistance R 4, resistance R 5, resistance R 6, diode D3, diode D4, diode D5, NPN type triode Q3, NPN type triode Q4 and positive-negative-positive triode Q5; One end of resistance R 5 is connected with the extreme B+ of accumulator positive, the other end of resistance R 5 is connected with diode D5 negative pole, diode D5 positive pole, one end of resistance R 6 are, the base stage of the collector electrode of triode Q3, triode Q4 is connected with the base stage of triode Q5, and the collector electrode of the other end of resistance R 6, triode Q4 is connected with 440 ends of the first power subsystem; The positive pole of diode D4 is connected with solar cell negative pole S-, and diode cathode is connected with one end of resistance R 4; Diode D3 is anodal to be connected with 330 ends of microprocessor, and diode D3 negative pole is connected with one end of resistance R 3, and the other end of the other end of resistance R 3, resistance R 4 is connected with the base stage of triode Q3; The emitter of triode Q3 is connected with battery terminal negative BGND; The emitter of the emitter of triode Q4, triode Q5 is connected with signal output part DRV1;
Described the second driver element is provided with resistance R 8, resistance R 9, resistance R 10, resistance R 11, resistance R 12, resistance R 13, resistance R 14, diode D7, NPN type triode Q6, positive-negative-positive triode Q7, NPN type triode Q8, NPN type triode Q9 and positive-negative-positive triode Q10, 430 ends of one end first power subsystem of resistance R 8 connect, resistance R 8 other ends, resistance R 9 one end are connected with pwm signal end, resistance R 9 other ends are connected with the base stage of triode Q6, the emitter of triode Q6 is connected with battery terminal negative BGND, the collector electrode of triode Q6 is connected with resistance R 11 one end, resistance R 11 other ends, one end of resistance R 10 is connected with the base stage of triode Q7, the other end of resistance R 10, the emitter of triode Q7 is connected with 440 ends of the first power subsystem, the collector electrode of triode Q7 is connected with diode D7 is anodal, diode D7 negative pole is connected with resistance R 12 one end, resistance R 12 other ends, resistance R 13 one end are connected with triode Q8 base stage, resistance R 13 other ends, the emitter of triode Q8, the collector electrode of triode Q10 is connected with solar cell negative pole end S-, resistance R 14 one end, the collector electrode of triode Q9 is connected with input power VS1, resistance R 14 other ends, the collector electrode of triode Q8, the base stage of triode Q9, the base stage of triode Q10 is connected with reverse connection of accumulator signal input part BattInverseFlag, the emitter of triode Q9, the emitter of triode Q10 is connected with driving signal output part DRV2.
The model of described diode D1 is 1N4148, and the model of described diode D2 is 1N4148.
The model of the even U1 of described light is TLP521.
The model of the even U2 of described light is TLP521.
The model of described triode Q3 is MMBT4401, and the model of described triode Q4 is MMBT4401, and the model of described triode Q5 is MMBT4403.
The model of described diode D3 is 1N4148, and the model of described diode D4 is 1N4148, and the model of described diode D5 is 1N4148.
The model of described triode Q6 is MMBT4401, and the model of described triode Q7 is MMBT4403.
The model of described triode Q8 is MMBT4401, and the model of described triode Q9 is MMBT4401, and the model of described triode Q10 is MMBT4403.
The model of described diode D7 is 1N4148.
The present invention is by solar cell reversal connection detecting unit and reverse connection of accumulator detecting unit; and first driver element and the second driver element; can the in the situation that of the positive and negative polarity reversal connection of solar cell or accumulator positive, negative polarity reversal connection, produce immediately defencive function; avoid solar cell storage battery to be carried out to the generation of reverse charging accident, effectively protected safety and the personal safety of storage battery, solar cell and solar charging controller itself.Circuit structure is simple, has dual anti-reverse defencive function, and defencive function is perfect, respond well.
Accompanying drawing explanation
The present invention is further illustrated to utilize accompanying drawing, but content in accompanying drawing does not form any limitation of the invention.
Fig. 1 is the circuit diagram of the reverse connection prevention protection circuit of a kind of solar charging controller of the present invention.
Fig. 2 is the circuit diagram of the solar cell reversal connection detecting unit of Fig. 1.
Fig. 3 is the circuit diagram of the reverse connection of accumulator detecting unit of Fig. 1.
Fig. 4 is the circuit diagram of the first driver element of the reverse connection prevention protection circuit of a kind of solar charging controller of the present invention.
Fig. 5 is the circuit diagram of the second driver element of the reverse connection prevention protection circuit of a kind of solar charging controller of the present invention.
In Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, comprising:
Solar cell 100, storage battery 200, microprocessor unit 300,
The first power subsystem 400, second source unit 500,
The first driver element 600, the second driver element 700,
Solar cell reversal connection detecting unit 800, reverse connection of accumulator detecting unit 900.
Embodiment
The invention will be further described with the following Examples.
A kind of reverse connection prevention protection circuit of solar charging controller; as shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 and Fig. 5, be provided with solar cell 100, storage battery 200, fuse, microprocessor unit 300, the first power subsystem 400, second source unit 500, the first driver element 600, the second driver element 700, MOSFET pipe Q1, MOSFET pipe Q2, diode D1, diode D2, solar cell reversal connection detecting unit 800 and reverse connection of accumulator detecting unit 900.
910 ends of 810 ends of the anodal S+ of solar cell 100, solar energy reversal connection detecting unit, the positive pole of diode D2, the positive pole of D1, reverse connection of accumulator detecting unit 900 are connected with one end of fuse, and the other end of fuse is connected with the anodal B+ of storage battery 200.
830 ends of solar cell reversal connection detecting unit 800 are connected with 320 ends of microprocessor unit 300, and the negative pole of diode D2 is connected with 510 ends of second source unit 500, and 530 ends of second source unit 500 are connected with 710 ends of the second driver element 700.
310 ends of microprocessor unit 300 are connected with 430 ends of the first power subsystem 400, and 330 ends of microprocessor are connected with 620 ends of the first driver element 600,720 ends of the second driver element 700.
730 ends of the second driver element 700 are connected with 930 ends of reverse connection of accumulator detecting unit 900, and 740 ends of the second driver element 700 are connected with the grid of MOSFT pipe Q2.
MOSFET manages the source electrode of Q2,520 ends of the first power subsystem 400,820 ends of solar cell reversal connection detecting unit 800 and the negative pole S-of solar cell 100 are connected.
The drain electrode of MOSFET pipe Q2 is connected with the drain electrode of MOSFET pipe Q1, and 620 ends of the first driver element 600 are connected with the grid of MOSFET pipe Q1.
The negative pole of diode D1 is connected with 410 ends of the first power subsystem 400,440 ends of the first power subsystem 400 are connected with 610 ends of the first driver element 600, and 420 ends of the first power subsystem 400, the MOSFET pipe source electrode of Q1,920 ends of reverse connection of accumulator detecting unit 900 are connected with the negative pole BGND of storage battery 200.
The model of diode D1 is 1N4148, and the model of diode D2 is 1N4148.
The present invention is by increasing solar cell reversal connection detecting unit 800 and reverse connection of accumulator detecting unit 900, by the first driver element of microprocessor unit 300 and power MOSFET tube Q1, the second driver element of power MOSFET tube Q2, jointly control turning on and off of power MOSFET pipe Q1 and power MOSFET tube Q2, just can prevent that solar cell 100 is to the generation of storage battery 200 reverse charging accidents.
By the input at the first power subsystem 400, add a diode D1, prevent the in the situation that of storage battery 200 reversal connection and cause the first power subsystem 400 to cause damage.
Power MOSFET pipe Q1 forms positive charge circuit switching unit, power MOSFET tube Q2 forms anti-backflow unit, on the other hand, power MOSFET pipe Q1 and power MOSFET tube Q2 have formed a bidirectional switch, can control positive charge and reverse charging, object of the present invention is exactly to avoid the generation of reverse charging.
As shown in Figure 2, solar cell reversal connection detecting unit 800 is provided with the even U1 of light, resistance R 1 and resistance R 2, and the model of the even U1 of light is TLP521.Even 1 pin of U1 of light and the negative pole S-of solar cell 100 are connected, 2 pin of the even U1 of light are connected with one end of resistance R 1, the other end of resistance R 1 is connected with the anodal S+ of solar cell 100, even 3 pin of U1 of light and the negative pole BGND of storage battery 200 are connected, one end of resistance R 2 is connected with power supply+VB2,4 pin of the other end of resistance R 2, the even U1 of light are connected with output signal end PVInverseFlag, and output signal end PVInverseFlag is connected with 320 ends of microprocessor unit 300.
When solar cell 100 reversal connection, the output signal end PVInverseFlag of the even U1 of light outputs signal to processor, and processor will be taked corresponding control measure, prevent the impact that solar cell 100 reversal connections cause.The even U1 of light that adopts TLP521, detects more accurate.
As shown in Figure 3, reverse connection of accumulator detecting unit 900 is provided with the even U2 of light, resistance R 7 and diode D6, and the model of the even U2 of light is TLP521.1 pin of the even U2 of light is connected with storage battery 200 negative pole BGND, one end of resistance R 7 is connected with the anodal B+ of storage battery 200, resistance R 7 other ends are connected with 2 pin of the even U2 of light, 3 pin of the even U2 of light are connected with the positive pole of diode D6, the negative pole of diode D6 is connected with the negative pole S-of solar cell 100,4 pin of the even U2 of light are connected with output signal end BattInverseFlag, and output signal end BattInverseFlag is connected with 730 ends of the second driver element 700.
The first driver element 600 is provided with resistance R 3, resistance R 4, resistance R 5, resistance R 6, diode D3, diode D4, diode D5, NPN type triode Q3, NPN type triode Q4 and positive-negative-positive triode Q5 as shown in Figure 4.
One end of resistance R 5 is connected with storage battery 200 positive terminal B+, the other end of resistance R 5 is connected with diode D5 negative pole, diode D5 positive pole, one end of resistance R 6 are, the base stage of the collector electrode of triode Q3, triode Q4 is connected with the base stage of triode Q5, and the collector electrode of the other end of resistance R 6, triode Q4 is connected with positive source VB1.
The positive pole of diode D4 is connected with solar cell 100 negative pole S-, and diode cathode is connected with one end of resistance R 4.Diode D3 is anodal to be connected with PWM end, and diode D3 negative pole is connected with one end of resistance R 3, and the other end of the other end of resistance R 3, resistance R 4 is connected with the base stage of triode Q3.
The emitter of triode Q3 is connected with storage battery 200 negative input BGND, and the emitter of the emitter of triode Q4, triode Q5 is connected with signal output part DRV1.
Wherein, the model of triode Q3 is MMBT4401, and the model of triode Q4 is MMBT4401, and the model of triode Q5 is MMBT4403.
The model of diode D3 is 1N4148, and the model of diode D4 is 1N4148, and the model of diode D5 is 1N4148.
As shown in Figure 5, the second driver element 700 is provided with resistance R 8, resistance R 9, resistance R 10, resistance R 11, resistance R 12, resistance R 13, resistance R 14, diode D7, NPN type triode Q6, positive-negative-positive triode Q7, NPN type triode Q8, NPN type triode Q9 and positive-negative-positive triode Q10.
One end of resistance R 8 is connected with input power VB2, resistance R 8 other ends, resistance R 9 one end are connected with pwm signal end, resistance R 9 other ends are connected with the base stage of triode Q6, the emitter of triode Q6 is connected with storage battery 200 negative pole BGND, the collector electrode of triode Q6 is connected with resistance R 11 one end, resistance R 11 other ends, one end of resistance R 10 is connected with the base stage of triode Q7, the other end of resistance R 10, the emitter of triode Q7 is connected with input power VB1, the collector electrode of triode Q7 is connected with diode D7 is anodal, diode D7 negative pole is connected with resistance R 12 one end, resistance R 12 other ends, resistance R 13 one end are connected with triode Q8 base stage, resistance R 13 other ends, the emitter of triode Q8, the collector electrode of triode Q10 is connected with solar cell 100 negative pole end S-, resistance R 14 one end, the collector electrode of triode Q9 is connected with input power VS1, resistance R 14 other ends, the collector electrode of triode Q8, the base stage of triode Q9, the base stage of triode Q10 is connected with storage battery 200 reversal connection signal input part BattInverseFlag, the emitter of triode Q9, the emitter of triode Q10 is connected with driving signal output part DRV2.
Wherein, the model of triode Q6 is MMBT4401, and the model of triode Q7 is MMBT4403, and the model of triode Q8 is MMBT4401, and the model of triode Q9 is MMBT4401, and the model of triode Q10 is MMBT4403, and the model of diode D7 is 1N4148.
The reverse connection prevention protection circuit of a kind of solar charging controller of the present invention, its concrete anti-reverse protection philosophy is as follows.
(1) storage battery 200 normally connects, during solar cell 100 reversal connection.
Because storage battery 200 normally connects, therefore the first power subsystem 400 is normally worked, solar cell 100 reversal connections, and due to the reverse blocking effect of diode D2, can not work in second source unit 500, thereby can not provide power supply to power MOSFET pipe Q2.
Now, the voltage of solar cell 100 negative poles is higher than anodal voltage, and electric current can pass through the parasitic body diode of power MOSFET pipe Q2 by its source electrode flow direction drain electrode, and for avoiding reverse charging, power MOSFET pipe Q1 must turn-off.The reverse connection prevention protection circuit of solar charging controller of the present invention, can disconnect Q1 by two kinds of modes.
The one, solar cell reversal connection detecting unit 800 detects solar cell 100 reversal connections, to microcontroller, sends signal, and microcontroller is by pwm signal through the first driver element 600, and switch-off power MOSFET manages Q1.
The 2nd, in the first driver element 600, install protected location additional.Solar cell 100 reversal connections, during storage battery 200 normal connection, the voltage of level S-is higher than the voltage of level BGND, the positive voltage that level S-produces by diode D4, resistance R 4, make NPN type triode Q3 conducting, the collector electrode of triode Q3 becomes low level, thereby make the push-pull circuit output signal DRV1 consisting of NPN type triode Q4, positive-negative-positive triode Q5, is low level, thereby turn-offed power MOSFET Q1, prevented the reverse charging to storage battery 200.
(2) storage battery 200 reversal connections, during solar cell 100 normal connection.
Storage battery 200 reversal connections, due to the reverse blocking effect of diode D1, the first power subsystem 400 can not be worked, thereby power supply is provided can not to power MOSFET Q2 and micro controller unit, and micro controller unit can not be worked.Solar cell 100 normally connects, and normally works in second source unit 500.
Now, the voltage of level BGND is higher than the voltage of solar energy negative pole S-, and electric current can pass through the parasitic body diode of power MOSFET Q1 by its source electrode flow direction drain electrode, and for avoiding reverse charging, power MOSFET Q2 must turn-off.Because micro controller unit does not have power supply, so cisco unity malfunction, therefore the shutoff of power MOSFET tube Q2 can only be passed through the second driver element 700.
The signal that reverse connection of accumulator detecting unit 900 provides, makes the second driver element 700 output low levels.During storage battery 200 reversal connection, the conducting of the even U2 interior light emitting diodes of light, output by U2 drags down the input level of the push-pull circuit consisting of NPN type triode Q9, positive-negative-positive triode Q10, thereby making the output signal DRV2 of push-pull circuit is low level, thereby realized the shutoff of power MOSFET pipe Q2.
(3) storage battery 200 reversal connections, during solar cell 100 reversal connection.
Storage battery 200 reversal connections, due to the reverse blocking effect of diode D1, the first power subsystem 400 can not be worked.Solar cell 100 reversal connections, due to the reverse blocking effect of diode D2, can not work in second source unit 500.
Storage battery 200 reversal connections, solar cell 100 reversal connections, now in two kinds of situation.
<1>: when
time, the voltage of level S-is higher than the voltage of level BGND, and electric current can pass through the parasitic body diode of power MOSFET tube Q2 by its source electrode flow direction drain electrode, and for avoiding reverse charging, power MOSFET tube Q1 must turn-off.Solution provided by the invention is:
The voltage of level S-is higher than the voltage of level BGND, and the positive voltage that level S-produces by diode D4, resistance R 4, makes NPN type triode Q3 conducting, and the collector electrode of triode Q3 becomes low level.Simultaneously, due to storage battery 200 reversal connections, the voltage of the voltage ratio level BGND of level B+ is low, level B+ is by resistance R 5 and diode D5, the voltage of the collector electrode of triode Q3 is pulled down under level BGND, make the base stage input voltage of the push-pull circuit that NPN type triode Q4, positive-negative-positive triode Q5 form lower than level BGND, thereby make the push-pull circuit output voltage signal DRV1 being formed by triode Q4, triode Q5, be low level, thereby turn-offed power MOSFET tube Q1.
<2>: when
time, the voltage of level BGND is higher than the voltage of level S-, and electric current can pass through the parasitic body diode of power MOSFET pipe Q1 by its source electrode flow direction drain electrode, and for avoiding reverse charging, power MOSFET pipe Q2 must turn-off.Because micro controller unit does not have power supply cisco unity malfunction, so the shutoff of power MOSFET pipe Q2 can only realize by the second driver element 700.Solution provided by the invention is:
During storage battery 200 reversal connection, the conducting of the even U2 interior light emitting diodes of light, output by U2 drags down the input level of the push-pull circuit consisting of NPN type triode Q9, positive-negative-positive triode Q10, thereby the output signal DRV2 that makes push-pull circuit is low level, so just realized the shutoff of power MOSFET pipe Q2.
The reverse connection prevention protection circuit of solar charging controller of the present invention, has following characteristics.
1, circuit structure is simple, and technology is novel, and scheme is unique, respond well.If in use there is misoperation; even the in the situation that of the positive and negative polarity of solar cell 100 or the positive and negative polarity reversal connection of storage battery 200; or both in the situation of reversal connection simultaneously; avoid 100 pairs of storage batterys of solar cell 200 to carry out the generation of reverse charging accident, effectively protected safety and the personal safety of storage battery 200, solar charging controller and solar cell 100.
2, dual anti-reverse defencive function, defencive function is perfect.First heavily protection be by hardware circuit realizes independent, fast, anti-defencive function completely, second heavily to protect be to be realized by software protection module by microcontroller, and a kind of assistant protection function is provided.
Finally should be noted that; above embodiment is only in order to illustrate technical scheme of the present invention but not limiting the scope of the invention; although the present invention is explained in detail with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify or be equal to replacement technical scheme of the present invention, and not depart from essence and the scope of technical solution of the present invention.
Claims (9)
1. a reverse connection prevention protection circuit for solar charging controller, is characterized in that: be provided with solar cell, storage battery, fuse, microprocessor unit, the first power subsystem, second source unit, the first driver element, the second driver element, MOSFET pipe Q1, MOSFET pipe Q2, diode D1, diode D2, solar cell reversal connection detecting unit and reverse connection of accumulator detecting unit;
910 ends of 810 ends of the anodal S+ of solar cell, solar cell reversal connection detecting unit, the positive pole of diode D2, the positive pole of D1, reverse connection of accumulator detecting unit are connected with one end of fuse, and the other end of fuse is connected with the anodal B+ of storage battery;
830 ends of solar cell reversal connection detecting unit are connected with 320 ends of microprocessor unit, and the negative pole of diode D2 is connected with 510 ends of second source unit, and 530 ends of second source unit are connected with 710 ends of the second driver element;
310 ends of microprocessor unit are connected with 430 ends of the first power subsystem, and 330 ends of microprocessor unit are connected with 720 ends of 620 ends of the first driver element, the second driver element;
730 ends of the second driver element are connected with 930 ends of reverse connection of accumulator detecting unit, and 740 ends of the second driver element are connected with the grid of MOSFET pipe Q2;
MOSFET manages the source electrode of Q2,520 ends of second source unit, 820 ends of solar cell reversal connection detecting unit and the negative pole S-of solar cell are connected;
The drain electrode of MOSFET pipe Q2 is connected with the drain electrode of MOSFET pipe Q1, and 630 ends of the first driver element are connected with the grid of MOSFET pipe Q1;
The negative pole of diode D1 is connected with 410 ends of the first power subsystem, and 440 ends of the first power subsystem are connected with 610 ends of the first driver element;
420 ends of the first power subsystem, the MOSFET pipe source electrode of Q1,920 ends of reverse connection of accumulator detecting unit are connected with the negative pole BGND of storage battery;
Described solar cell reversal connection detecting unit is provided with optocoupler U1, resistance R 1 and resistance R 2, the transmitting tube positive pole of optocoupler U1 is connected with the negative pole S-of solar cell, the transmitting tube negative electrode of optocoupler U1 is connected with one end of resistance R 1, the other end of resistance R 1 is connected with the anodal S+ of solar cell, the receiving tube emitter of optocoupler U1 is connected with the negative pole BGND of storage battery, one end of resistance R 2 is connected with power supply+VB2, the other end of resistance R 2, the receiving tube collector electrode of optocoupler U1 is connected with output signal end PVInverseFlag, output signal end PVInverseFlag is connected with 320 ends of microprocessor unit,
Described reverse connection of accumulator detecting unit is provided with optocoupler U2, resistance R 7 and diode D6, the transmitting tube positive pole of optocoupler U2 is connected with battery terminal negative BGND, one end of resistance R 7 is connected with the anodal B+ of storage battery, resistance R 7 other ends are connected with the transmitting tube negative electrode of optocoupler U2, the receiving tube emitter of optocoupler U2 is connected with the positive pole of diode D6, the negative pole of diode D6 is connected with the negative pole S-of solar cell, the receiving tube collector electrode of optocoupler U2 is connected with output signal end BattInverseFlag, output signal end BattInverseFlag is connected with 730 ends of the second driver element,
Described the first driver element is provided with resistance R 3, resistance R 4, resistance R 5, resistance R 6, diode D3, diode D4, diode D5, NPN type triode Q3, NPN type triode Q4 and positive-negative-positive triode Q5; One end of resistance R 5 is connected with the extreme B+ of accumulator positive, the other end of resistance R 5 is connected with diode D5 negative pole, diode D5 positive pole, one end of resistance R 6 are, the base stage of the collector electrode of triode Q3, triode Q4 is connected with the base stage of triode Q5, and the collector electrode of the other end of resistance R 6, triode Q4 is connected with 440 ends of the first power subsystem; The positive pole of diode D4 is connected with solar cell negative pole S-, and the negative pole of diode D4 is connected with one end of resistance R 4; Diode D3 is anodal to be connected with 330 ends of microprocessor unit, and diode D3 negative pole is connected with one end of resistance R 3, and the other end of the other end of resistance R 3, resistance R 4 is connected with the base stage of triode Q3; The emitter of triode Q3 is connected with battery terminal negative BGND; The emitter of the emitter of triode Q4, triode Q5 is connected with signal output part DRV1;
Described the second driver element is provided with resistance R 8, resistance R 9, resistance R 10, resistance R 11, resistance R 12, resistance R 13, resistance R 14, diode D7, NPN type triode Q6, positive-negative-positive triode Q7, NPN type triode Q8, NPN type triode Q9 and positive-negative-positive triode Q10, one end of resistance R 8 is connected with input power VB2, resistance R 8 other ends, resistance R 9 one end are connected with pwm signal end, resistance R 9 other ends are connected with the base stage of triode Q6, the emitter of triode Q6 is connected with battery terminal negative BGND, the collector electrode of triode Q6 is connected with resistance R 11 one end, resistance R 11 other ends, one end of resistance R 10 is connected with the base stage of triode Q7, the other end of resistance R 10, the emitter of triode Q7 is connected with 440 ends of the first power subsystem, the collector electrode of triode Q7 is connected with diode D7 is anodal, diode D7 negative pole is connected with resistance R 12 one end, resistance R 12 other ends, resistance R 13 one end are connected with triode Q8 base stage, resistance R 13 other ends, the emitter of triode Q8, the collector electrode of triode Q10 is connected with solar cell negative pole end S-, resistance R 14 one end, the collector electrode of triode Q9 is connected with input power VS1, resistance R 14 other ends, the collector electrode of triode Q8, the base stage of triode Q9, the base stage of triode Q10 is connected with reverse connection of accumulator signal input part BattInverseFlag, the emitter of triode Q9, the emitter of triode Q10 is connected with driving signal output part DRV2.
2. the reverse connection prevention protection circuit of solar charging controller according to claim 1, is characterized in that: the model of described diode D1 is 1N4148, and the model of described diode D2 is 1N4148.
3. the reverse connection prevention protection circuit of solar charging controller according to claim 1, is characterized in that: the model of described optocoupler U1 is TLP521.
4. the reverse connection prevention protection circuit of solar charging controller according to claim 1, is characterized in that: the model of described optocoupler U2 is TLP521.
5. the reverse connection prevention protection circuit of solar charging controller according to claim 1, is characterized in that: the model of described triode Q3 is MMBT4401, and the model of described triode Q4 is MMBT4401, and the model of described triode Q5 is MMBT4403.
6. the reverse connection prevention protection circuit of solar charging controller according to claim 1, is characterized in that: the model of described diode D3 is 1N4148, and the model of described diode D4 is 1N4148, and the model of described diode D5 is 1N4148.
7. the reverse connection prevention protection circuit of solar charging controller according to claim 1, is characterized in that: the model of described triode Q6 is MMBT4401, and the model of described triode Q7 is MMBT4403.
8. the reverse connection prevention protection circuit of solar charging controller according to claim 1, is characterized in that: the model of described triode Q8 is MMBT4401, and the model of described triode Q9 is MMBT4401, and the model of described triode Q10 is MMBT4403.
9. the reverse connection prevention protection circuit of solar charging controller according to claim 1, is characterized in that: the model of described diode D7 is 1N4148.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010610569.1A CN102570443B (en) | 2010-12-29 | 2010-12-29 | Anti-reverse connection protection circuit of solar charging controller |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010610569.1A CN102570443B (en) | 2010-12-29 | 2010-12-29 | Anti-reverse connection protection circuit of solar charging controller |
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| CN102570443B true CN102570443B (en) | 2014-12-03 |
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| CN201010610569.1A Active CN102570443B (en) | 2010-12-29 | 2010-12-29 | Anti-reverse connection protection circuit of solar charging controller |
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| CN107733028A (en) * | 2017-10-30 | 2018-02-23 | 深圳硕日新能源科技有限公司 | A kind of anti-reverse apparatus and system of solar panels |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5781390A (en) * | 1996-12-21 | 1998-07-14 | Sgs-Thomson Microelectronics, Inc. | Integrated supply protection |
| CN101888109A (en) * | 2010-07-20 | 2010-11-17 | 衡阳中微科技开发有限公司 | Storage battery charge control circuit adopting two-way reverse connecting protection |
| CN201918713U (en) * | 2010-12-29 | 2011-08-03 | 广东易事特电源股份有限公司 | Reverse connection prevention protection circuit of solar energy charge controller |
-
2010
- 2010-12-29 CN CN201010610569.1A patent/CN102570443B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5781390A (en) * | 1996-12-21 | 1998-07-14 | Sgs-Thomson Microelectronics, Inc. | Integrated supply protection |
| CN101888109A (en) * | 2010-07-20 | 2010-11-17 | 衡阳中微科技开发有限公司 | Storage battery charge control circuit adopting two-way reverse connecting protection |
| CN201918713U (en) * | 2010-12-29 | 2011-08-03 | 广东易事特电源股份有限公司 | Reverse connection prevention protection circuit of solar energy charge controller |
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