CN102570443A - Anti-reverse connection protection circuit of solar charging controller - Google Patents
Anti-reverse connection protection circuit of solar charging controller Download PDFInfo
- Publication number
- CN102570443A CN102570443A CN2010106105691A CN201010610569A CN102570443A CN 102570443 A CN102570443 A CN 102570443A CN 2010106105691 A CN2010106105691 A CN 2010106105691A CN 201010610569 A CN201010610569 A CN 201010610569A CN 102570443 A CN102570443 A CN 102570443A
- Authority
- CN
- China
- Prior art keywords
- resistance
- triode
- diode
- model
- solar cell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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 the solar charging controller technology, particularly relate to a kind of anti-reverse protective circuit of solar charging controller.
Background technology
Solar charging controller is used for the whole process control of solar cell to battery charging process, in use, if misoperation; Cause accumulator positive, the negative polarity reversal connection of controller input, the perhaps positive and negative polarity reversal connection of the solar cell of controller input, perhaps both positive and negative polarity reversal connections simultaneously; Like this in charging process; Can cause solar cell that storage battery is carried out the generation of reverse charging accident, the consequence that causes is gently then to damage storage battery; Heavy then produce strong sparkover; Have a strong impact on the useful life of storage battery, more serious meeting causes that storage battery is overheated blasts, and generation with the personal safety accident very easily causes any property loss.And present existing solar charging controller does not all have the reverse connecting protection measure of this respect, has potential safety hazard.
Not enough to prior art, so provide a kind of anti-reverse protective circuit of solar charging controller very necessary to solve the prior art deficiency.
Summary of the invention
The anti-reverse protective circuit that the objective of the invention is to avoid the weak point of prior art and a kind of solar charging controller is provided.
The object of the invention is realized through following technical measures.
A kind of anti-reverse protective circuit of solar charging controller is provided with solar cell, storage battery, fuse, microprocessor unit, first power subsystem, second source unit, first driver element, 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;
The positive pole of 810 ends of the anodal S+ of solar cell, solar energy reversal connection detecting unit, the positive pole of diode D2, D1,910 ends of reverse connection of accumulator detecting unit are connected with an 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 second driver element;
310 ends of microprocessor unit are connected with 430 ends of first power subsystem, and 330 ends of microprocessor are connected with 720 ends of 620 ends of first driver element, second driver element;
730 ends of second driver element are connected with 930 ends of reverse connection of accumulator detecting unit, and 740 ends of second driver element are connected with the grid of MOSFT pipe Q2;
The source electrode of MOSFET pipe Q2,520 ends of first power subsystem, 820 ends of solar cell reversal connection detecting unit are connected with the negative pole S-of solar cell;
The drain electrode of MOSFET pipe Q2 is connected with the drain electrode of MOSFET pipe Q1, and 620 ends of first driver element are connected with the grid of MOSFET pipe Q1;
The negative pole of diode D1 is connected with 410 ends of first power subsystem, and 440 ends of first power subsystem are connected with 610 ends of first driver element,
The source electrode of 420 ends of first power subsystem, MOSFET pipe Q1,920 ends of reverse connection of accumulator detecting unit are connected with the negative pole BGND of storage battery;
Said solar cell reversal connection detecting unit is provided with light idol U1, resistance R 1 and resistance R 2; 1 pin of light idol U1 is connected with the negative pole S-of solar cell; 2 pin of light idol U1 are connected with an end of resistance R 1; The other end of resistance R 1 is connected with the anodal S+ of solar cell, and 3 pin of light idol U1 are connected with the negative pole BGND of storage battery, and an end of resistance R 2 is connected with power supply+VB2; 4 pin of the other end of resistance R 2, light idol U1 are connected with output signal end PVInverseFlag, and output signal end PVInverseFlag is connected with 320 ends of microprocessor unit;
Said reverse connection of accumulator detecting unit is provided with light idol U2, resistance R 7 and diode D6; 1 pin of light idol 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 2 pin of light idol U2, and 3 pin of light idol U2 are connected with the positive pole of diode D6, and the negative pole of diode D6 is connected with the negative pole S-of solar cell; 4 pin of light idol U2 are connected with output signal end BattInverseFlag, and output signal end BattInverseFlag is connected with 730 ends of second driver element;
Said 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, an end of resistance R 6, the collector electrode of triode Q3, the base stage of triode Q4 are 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 first power subsystem; The positive pole of diode D4 is connected with solar cell negative pole S-, and diode cathode is connected with an 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 an 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;
Said 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 ends are connected with the 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, and the collector electrode of triode Q6 is connected with resistance R 11 1 ends, and an end of resistance R 11 other ends, resistance R 10 is connected with the base stage of triode Q7; The emitter of the other end of resistance R 10, triode Q7 is connected with 440 ends of first power subsystem; The collector electrode of triode Q7 is connected with diode D7 is anodal, and diode D7 negative pole is connected with resistance R 12 1 ends, and resistance R 12 other ends, resistance R 13 1 ends are connected with triode Q8 base stage; The emitter of resistance R 13 other ends, triode Q8, the collector electrode of triode Q10 are connected with solar cell negative pole end S-; The collector electrode of resistance R 14 1 ends, triode Q9 is connected with input power supply VS1, and the base stage of the collector electrode of resistance R 14 other ends, triode Q8, the base stage of triode Q9, triode Q10 is connected with reverse connection of accumulator signal input part BattInverseFlag, and the emitter of the emitter of triode Q9, triode Q10 is connected with drive signal output DRV2.
The model of said diode D1 is 1N4148, and the model of said diode D2 is 1N4148.
The model of said light idol U1 is TLP521.
The model of said light idol U2 is TLP521.
The model of said triode Q3 is MMBT4401, and the model of said triode Q4 is MMBT4401, and the model of said triode Q5 is MMBT4403.
The model of said diode D3 is 1N4148, and the model of said diode D4 is 1N4148, and the model of said diode D5 is 1N4148.
The model of said triode Q6 is MMBT4401, and the model of said triode Q7 is MMBT4403.
The model of said triode Q8 is MMBT4401, and the model of said triode Q9 is MMBT4401, and the model of said triode Q10 is MMBT4403.
The model of said diode D7 is 1N4148.
The present invention is through solar cell reversal connection detecting unit and reverse connection of accumulator detecting unit; And first driver element and second driver element; Can under the situation of the positive and negative polarity reversal connection of solar cell or accumulator positive, negative polarity reversal connection, produce defencive function immediately; Avoid solar cell that storage battery is carried out the generation of reverse charging accident, protected the safety and the personal safety of storage battery, solar cell and solar charging controller itself effectively.Circuit structure is simple, has dual anti-reverse defencive function, and defencive function is perfect, and is respond well.
Description of drawings
Utilize accompanying drawing that the present invention is further described, but the content in the accompanying drawing does not constitute any restriction of the present invention.
Fig. 1 is the circuit diagram of the anti-reverse protective 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 first driver element of the anti-reverse protective circuit of a kind of solar charging controller of the present invention.
Fig. 5 is the circuit diagram of second driver element of the anti-reverse protective 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 reversal connection detecting unit 800, reverse connection of accumulator detecting unit 900.
Embodiment
In conjunction with following examples the present invention is further described.
A kind of anti-reverse protective circuit of solar charging controller; Like Fig. 1, Fig. 2, Fig. 3, Fig. 4 and shown in Figure 5, be provided with solar cell 100, storage battery 200, fuse, microprocessor unit 300, first power subsystem 400, second source unit 500, first driver element 600, 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.
The positive pole of 810 ends of the anodal S+ of solar cell 100, solar energy reversal connection detecting unit, the positive pole of diode D2, D1,910 ends of reverse connection of accumulator detecting unit 900 are connected with an 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 second driver element 700.
310 ends of microprocessor unit 300 are connected with 430 ends of first power subsystem 400, and 330 ends of microprocessor are connected with 620 ends of first driver element 600,720 ends of second driver element 700.
730 ends of second driver element 700 are connected with 930 ends of reverse connection of accumulator detecting unit 900, and 740 ends of second driver element 700 are connected with the grid of MOSFT pipe Q2.
The source electrode of MOSFET pipe Q2,520 ends of first power subsystem 400,820 ends of solar cell reversal connection detecting unit 800 are connected with the negative pole S-of solar cell 100.
The drain electrode of MOSFET pipe Q2 is connected with the drain electrode of MOSFET pipe Q1, and 620 ends of 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 first power subsystem 400; 440 ends of first power subsystem 400 are connected with 610 ends of first driver element 600, and 420 ends of first power subsystem 400, the source electrode of MOSFET pipe 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 through increasing solar cell reversal connection detecting unit 800 and reverse connection of accumulator detecting unit 900; Through first driver element of microprocessor unit 300 and power MOSFET tube Q1, 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 the generation of solar cell 100 to storage battery 200 reverse charging accidents.
Add a diode D1 through input, prevent under the situation of storage battery 200 reversal connections and cause first power subsystem 400 to cause damage at first power subsystem 400.
Power MOSFET pipe Q1 constitutes positive charge circuit switching unit; Power MOSFET tube Q2 constitutes the anti-backflow unit; On the other hand; Power MOSFET pipe Q1 and power MOSFET tube Q2 have constituted a bidirectional switch, can control positive charge and reverse charging, and the object of the invention is exactly the generation that will avoid reverse charging.
As shown in Figure 2, solar cell reversal connection detecting unit 800 is provided with light idol U1, resistance R 1 and resistance R 2, and the model of light idol U1 is TLP521.1 pin of light idol U1 is connected with the negative pole S-of solar cell 100; 2 pin of light idol U1 are connected with an end of resistance R 1; The other end of resistance R 1 is connected with the anodal S+ of solar cell 100, and 3 pin of light idol U1 are connected with the negative pole BGND of storage battery 200, and an end of resistance R 2 is connected with power supply+VB2; 4 pin of the other end of resistance R 2, light idol U1 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 connections, the output signal end PVInverseFlag of light idol U1 outputs signal to processor, and processor will be taked corresponding control measures, prevent the influence that solar cell 100 reversal connections are caused.Adopt the light idol U1 of TLP521, detect more accurate.
As shown in Figure 3, reverse connection of accumulator detecting unit 900 is provided with light idol U2, resistance R 7 and diode D6, and the model of light idol U2 is TLP521.1 pin of light idol U2 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 light idol U2, and 3 pin of light idol U2 are connected with the positive pole of diode D6, and the negative pole of diode D6 is connected with the negative pole S-of solar cell 100; 4 pin of light idol U2 are connected with output signal end BattInverseFlag, and output signal end BattInverseFlag is connected with 730 ends of second driver element 700.
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, an end of resistance R 6, the collector electrode of triode Q3, the base stage of triode Q4 are 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 an end of resistance R 4.Diode D3 is anodal to be connected with the PWM end, and diode D3 negative pole is connected with an 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, 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 supply VB2; Resistance R 8 other ends, resistance R 9 one ends are connected with the 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, and the collector electrode of triode Q6 is connected with resistance R 11 1 ends, and an end of resistance R 11 other ends, resistance R 10 is connected with the base stage of triode Q7; The emitter of the other end of resistance R 10, triode Q7 is connected with input power supply VB1; The collector electrode of triode Q7 is connected with diode D7 is anodal, and diode D7 negative pole is connected with resistance R 12 1 ends, and resistance R 12 other ends, resistance R 13 1 ends are connected with triode Q8 base stage; The emitter of resistance R 13 other ends, triode Q8, the collector electrode of triode Q10 are connected with solar cell 100 negative pole end S-; The collector electrode of resistance R 14 1 ends, triode Q9 is connected with input power supply VS1, and the base stage of the collector electrode of resistance R 14 other ends, triode Q8, the base stage of triode Q9, triode Q10 is connected with storage battery 200 reversal connection signal input part BattInverseFlag, and the emitter of the emitter of triode Q9, triode Q10 is connected with drive signal output 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 anti-reverse protective circuit of a kind of solar charging controller of the present invention, its concrete anti-reverse protection philosophy is following.
(1) storage battery 200 normally connects, during solar cell 100 reversal connections.
Because storage battery 200 normally connects, so first power subsystem, 400 operate as normal, solar cell 100 reversal connections, because the reverse blocking effect of diode D2, can not work in second source unit 500, thereby can not power supply be provided to power MOSFET pipe Q2.
At this moment, the voltage of solar cell 100 negative poles is higher than anodal voltage, and electric current can pass through the source electrode flow direction drain electrode of the parasitic body diode of power MOSFET pipe Q2 by it, and for avoiding reverse charging, power MOSFET pipe Q1 must turn-off.The anti-reverse protective circuit of solar charging controller of the present invention can be broken off Q1 through dual mode.
The one, solar cell reversal connection detecting unit 800 detects solar cell 100 reversal connections, sends signal to microcontroller, and through first driver element 600, switch-off power MOSFET manages Q1 to microcontroller through pwm signal.
The 2nd, in first driver element 600, install protected location additional.Solar cell 100 reversal connections, storage battery is during 200 normal connections, and the voltage of level S-is higher than the voltage of level BGND; The positive voltage that level S-produces through diode D4, resistance R 4; Make NPN type triode Q3 conducting, the collector electrode of triode Q3 becomes low level, is low level thereby make the push-pull circuit output signal DRV1 that is made up of NPN type triode Q4, positive-negative-positive triode Q5; Thereby turn-offed power MOSFET Q1, prevented reverse charging storage battery 200.
(2) storage battery 200 reversal connections, solar cell is during 100 normal connections.
Storage battery 200 reversal connections, because the reverse blocking effect of diode D1, first power subsystem 400 can not be worked, thereby power supply is provided can not for power MOSFET Q2 and micro controller unit, micro controller unit can not be worked.Solar cell 100 normally connects, second source unit 500 operate as normal.
At this moment, the voltage of level BGND is higher than the voltage of solar energy negative pole S-, and electric current can pass through the source electrode flow direction drain electrode of the parasitic body diode of power MOSFET Q1 by it, and for avoiding reverse charging, power MOSFET Q2 must turn-off.Because micro controller unit does not have power supply, so cisco unity malfunction, so the shutoff of power MOSFET tube Q2 can only be passed through second driver element 700.
The signal that reverse connection of accumulator detecting unit 900 provides makes second driver element, 700 output low levels.During storage battery 200 reversal connections; The conducting of light idol U2 interior light emitting diodes; Output through U2 drags down the input level of the push-pull circuit that is made up of NPN type triode Q9, positive-negative-positive triode Q10; Thereby making the output signal DRV2 of push-pull circuit is low level, thereby has realized the shutoff of power MOSFET pipe Q2.
(3) storage battery 200 reversal connections are during solar cell 100 reversal connections.
Storage battery 200 reversal connections, because the reverse blocking effect of diode D1, first power subsystem 400 can not be worked.Solar cell 100 reversal connections, because 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, this time-division two kinds of situation.
< 1 >: during as
; The voltage of level S-is higher than the voltage of level BGND; Electric current can pass through the source electrode flow direction drain electrode of the parasitic body diode of power MOSFET tube Q2 by it; 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 level S-makes NPN type triode Q3 conducting through the positive voltage that diode D4, resistance R 4 produce, and the collector electrode of triode Q3 becomes low level.Simultaneously; Because storage battery 200 reversal connections, the voltage of the voltage ratio level BGND of level B+ is low, and level B+ is through resistance R 5 and diode D5; Be pulled down to the voltage of the collector electrode of triode Q3 under the level BGND; Make the base stage input voltage of the push-pull circuit of NPN type triode Q4, positive-negative-positive triode Q5 formation be lower than level BGND, be low level thereby make the push-pull circuit output voltage signal DRV1 that constitutes by triode Q4, triode Q5, thereby turn-offed power MOSFET tube Q1.
< 2 >: during as
; The voltage of level BGND is higher than the voltage of level S-; Electric current can pass through the source electrode flow direction drain electrode of the parasitic body diode of power MOSFET pipe Q1 by it; For avoiding reverse charging, power MOSFET pipe Q2 must turn-off.Because micro controller unit does not have the power supply cisco unity malfunction, so the shutoff of power MOSFET pipe Q2 can only realize through second driver element 700.Solution provided by the invention is:
During storage battery 200 reversal connections; The conducting of light idol U2 interior light emitting diodes; Output through U2 drags down the input level of the push-pull circuit that is made up of NPN type triode Q9, positive-negative-positive triode Q10; Thereby making the output signal DRV2 of push-pull circuit is low level, has so just realized the shutoff of power MOSFET pipe Q2.
The anti-reverse protective 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, and is respond well.If misoperation has in use taken place; Even under the situation of solar cell 100 positive and negative polarity or storage battery 200 positive and negative polarity reversal connections; Perhaps under the situation of both's reversal connection simultaneously; Avoid 100 pairs of storage batterys of solar cell 200 to carry out the generation of reverse charging accident, protected the safety and the personal safety of storage battery 200, solar charging controller and solar cell 100 effectively.
2, dual anti-reverse defencive function, defencive function is perfect.First heavily protection be through hardware circuit realize independent, fast, anti-defencive function completely, second heavily protection be to realize by the software protection module through microcontroller, a kind of assistant protection function is provided.
Should be noted that at last; Above embodiment is only in order to technical scheme of the present invention to be described but not to the restriction of protection range of the present invention; Although the present invention has been done detailed description with reference to preferred embodiment; Those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement technical scheme of the present invention, and do not break away from the essence and the scope of technical scheme of the present invention.
Claims (9)
1. the anti-reverse protective circuit of a solar charging controller is characterized in that: be provided with solar cell, storage battery, fuse, microprocessor unit, first power subsystem, second source unit, first driver element, 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;
The positive pole of 810 ends of the anodal S+ of solar cell, solar energy reversal connection detecting unit, the positive pole of diode D2, D1,910 ends of reverse connection of accumulator detecting unit are connected with an 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 second driver element;
310 ends of microprocessor unit are connected with 430 ends of first power subsystem, and 330 ends of microprocessor are connected with 720 ends of 620 ends of first driver element, second driver element;
730 ends of second driver element are connected with 930 ends of reverse connection of accumulator detecting unit, and 740 ends of second driver element are connected with the grid of MOSFT pipe Q2;
The source electrode of MOSFET pipe Q2,520 ends of first power subsystem, 820 ends of solar cell reversal connection detecting unit are connected with the negative pole S-of solar cell;
The drain electrode of MOSFET pipe Q2 is connected with the drain electrode of MOSFET pipe Q1, and 620 ends of first driver element are connected with the grid of MOSFET pipe Q1;
The negative pole of diode D1 is connected with 410 ends of first power subsystem, and 440 ends of first power subsystem are connected with 610 ends of first driver element;
The source electrode of 420 ends of first power subsystem, MOSFET pipe Q1,920 ends of reverse connection of accumulator detecting unit are connected with the negative pole BGND of storage battery;
Said solar cell reversal connection detecting unit is provided with light idol U1, resistance R 1 and resistance R 2; 1 pin of light idol U1 is connected with the negative pole S-of solar cell; 2 pin of light idol U1 are connected with an end of resistance R 1; The other end of resistance R 1 is connected with the anodal S+ of solar cell, and 3 pin of light idol U1 are connected with the negative pole BGND of storage battery, and an end of resistance R 2 is connected with power supply+VB2; 4 pin of the other end of resistance R 2, light idol U1 are connected with output signal end PVInverseFlag, and output signal end PVInverseFlag is connected with 320 ends of microprocessor unit;
Said reverse connection of accumulator detecting unit is provided with light idol U2, resistance R 7 and diode D6; 1 pin of light idol 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 2 pin of light idol U2, and 3 pin of light idol U2 are connected with the positive pole of diode D6, and the negative pole of diode D6 is connected with the negative pole S-of solar cell; 4 pin of light idol U2 are connected with output signal end BattInverseFlag, and output signal end BattInverseFlag is connected with 730 ends of second driver element;
Said 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, an end of resistance R 6, the collector electrode of triode Q3, the base stage of triode Q4 are 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 first power subsystem; The positive pole of diode D4 is connected with solar cell negative pole S-, and diode cathode is connected with an 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 an 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;
Said 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 ends are connected with the 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, and the collector electrode of triode Q6 is connected with resistance R 11 1 ends, and an end of resistance R 11 other ends, resistance R 10 is connected with the base stage of triode Q7; The emitter of the other end of resistance R 10, triode Q7 is connected with 440 ends of first power subsystem; The collector electrode of triode Q7 is connected with diode D7 is anodal, and diode D7 negative pole is connected with resistance R 12 1 ends, and resistance R 12 other ends, resistance R 13 1 ends are connected with triode Q8 base stage; The emitter of resistance R 13 other ends, triode Q8, the collector electrode of triode Q10 are connected with solar cell negative pole end S-; The collector electrode of resistance R 14 1 ends, triode Q9 is connected with input power supply VS1, and the base stage of the collector electrode of resistance R 14 other ends, triode Q8, the base stage of triode Q9, triode Q10 is connected with reverse connection of accumulator signal input part BattInverseFlag, and the emitter of the emitter of triode Q9, triode Q10 is connected with drive signal output DRV2.
2. the anti-reverse protective circuit of solar charging controller according to claim 1, it is characterized in that: the model of said diode D1 is 1N4148, the model of said diode D2 is 1N4148.
3. the anti-reverse protective circuit of solar charging controller according to claim 1 is characterized in that: the model of said light idol U1 is TLP521.
4. the anti-reverse protective circuit of solar charging controller according to claim 1 is characterized in that: the model of said light idol U2 is TLP521.
5. the anti-reverse protective circuit of solar charging controller according to claim 1, it is characterized in that: the model of said triode Q3 is MMBT4401, and the model of said triode Q4 is MMBT4401, and the model of said triode Q5 is MMBT4403.
6. the anti-reverse protective circuit of solar charging controller according to claim 1, it is characterized in that: the model of said diode D3 is 1N4148, and the model of said diode D4 is 1N4148, and the model of said diode D5 is 1N4148.
7. the anti-reverse protective circuit of solar charging controller according to claim 1, it is characterized in that: the model of said triode Q6 is MMBT4401, the model of said triode Q7 is MMBT4403.
8. the anti-reverse protective circuit of solar charging controller according to claim 1, it is characterized in that: the model of said triode Q8 is MMBT4401, and the model of said triode Q9 is MMBT4401, and the model of said triode Q10 is MMBT4403.
9. the anti-reverse protective circuit of solar charging controller according to claim 1, it is characterized in that: the model of said diode D7 is 1N4148.
Priority Applications (1)
| 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 |
Applications Claiming Priority (1)
| 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102570443A true CN102570443A (en) | 2012-07-11 |
| CN102570443B CN102570443B (en) | 2014-12-03 |
Family
ID=46415177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010610569.1A Active CN102570443B (en) | 2010-12-29 | 2010-12-29 | Anti-reverse connection protection circuit of solar charging controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102570443B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102570443B (en) | 2014-12-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207389120U (en) | Accumulator of electric car power-down protection circuit | |
| CN103457232A (en) | Short-circuit protection circuit of direct-current load and illuminator | |
| CN201918713U (en) | Reverse connection prevention protection circuit of solar energy charge controller | |
| CN202513559U (en) | Battery short-circuit protection circuit | |
| CN104426138A (en) | Over-discharge protection circuit of chargeable battery | |
| CN102545198B (en) | Reverse connection preventing protective circuit of solar charge controller with common-anode structure | |
| CN212258469U (en) | Battery charging anti-protection circuit | |
| CN203326653U (en) | Solar energy storage battery charging circuit | |
| CN201918729U (en) | Reverse-connection-preventive protection circuit of solar charge controller with common anode structure | |
| CN201726176U (en) | Charge control circuit with bidirectional reverse connection protection for storage batteries | |
| CN203491749U (en) | Power supply management circuit | |
| CN102097796A (en) | Voltage peak absorption protection circuit for power switching tube of solar energy charge controller | |
| CN102570443B (en) | Anti-reverse connection protection circuit of solar charging controller | |
| CN101420123B (en) | Solar energy controller preventing reverse connection of accumulator | |
| CN102104335B (en) | Three-terminal voltage regulator for power supply | |
| CN103490474A (en) | Power management circuit | |
| CN103326433A (en) | Power supply control circuit for portable device and portable monitor | |
| CN104065043B (en) | Battery under-voltage protection and display circuit | |
| CN201877778U (en) | Overcurrent protection circuit of solar street lamp | |
| CN102545164A (en) | Driving circuit of switch unit of reverse-connection preventing protection circuit for solar charge controller | |
| CN201666945U (en) | Power module parallel circuit in battery test equipment | |
| CN203596640U (en) | Solar energy pouring water drawing apparatus applied to accumulator protection | |
| CN203205871U (en) | Direct current reverse protection circuit | |
| CN201918755U (en) | Drive circuit for solar cell anti-reverse-connection protection circuit switch unit | |
| CN203595064U (en) | Self-adaptive solar lamp with solar battery protection function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |