CN204068359U - There is the independent photovoltaic charge controller of multi-protective function - Google Patents
There is the independent photovoltaic charge controller of multi-protective function Download PDFInfo
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- CN204068359U CN204068359U CN201420455451.XU CN201420455451U CN204068359U CN 204068359 U CN204068359 U CN 204068359U CN 201420455451 U CN201420455451 U CN 201420455451U CN 204068359 U CN204068359 U CN 204068359U
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Abstract
A kind of independent photovoltaic charge controller with multi-protective function; comprise Buck translation circuit, control circuit; it is characterized in that: also comprise charge protector; Buck translation circuit input connects solar battery array output; described Buck translation circuit output connects the input of described charge protector; the output of described charge protector connects storage battery; the output of control circuit is connected with Buck circuit, charge protector, controls for maximal power tracing and charging.The utility model achieves the safe and stable operation of independent photovoltaic array to charging process of storage battery set; the design adds multi-functional charge protector on the basis of original independent photovoltaic charge controller; make photovoltaic array to having the multi-protective functions such as overvoltage protection, under-voltage protection, overcurrent protection, anti-reverse protection, Electro Magnetic Compatibility protection in the charging process of storage battery; improve the reliability of photovoltaic charge controller; reduce equipment failure rate; extend the useful life of batteries, reduce the operating cost of photovoltaic generation process.
Description
Technical field
The utility model relates to a kind of independent photovoltaic charge controller of technical field of new energies, particularly a kind of independent photovoltaic charge controller with multi-protective function.
Background technology
Solar energy is a kind of clean reproducible new forms of energy, more and more be subject to the favor of people, have in people's life, work and act on widely, solar energy is converted to electric energy by exactly, independent photovoltaic charge controller utilizes solar energy as the energy, to the device that storage battery charges, to the development of present economic society, there is very large application value.
Independent photovoltaic charge controller charging control circuit structural design conventional is at present simple, and circuit lacks defencive function, generally there is following problem:
1, storage battery is in and overcharges for a long time or cross the state of putting, and namely accumulator voltage is for a long time higher than a certain value or lower than a certain value.
2, when storage battery is in and fills by force the stage, charged electrical fails to be convened for lack of a quorum and exceedes the maximum initial charge current of this storage battery.
3, batteries reversal connection protection function is lacked.
4, photovoltaic battery panel is exposed to open air, need consider the impact of electromagnetic interference aspect, and the protection especially for electrostatic and thunderbolt is particularly important, and general independent photovoltaic charge controller lacks Electromagnetic Compatibility protection.
The design defect more than existed can cause the problem such as abnormal waste and independent photovoltaic charge controller failure rate is high, job insecurity in batteries useful life.
Utility model content
In order to solve above-mentioned prior art Problems existing; the utility model is on the basis of existing independent photovoltaic controller; a kind of independent photovoltaic charge controller with multi-protective functions such as overvoltage protection, under-voltage protection, overcurrent protection, anti-reverse protection, Electro Magnetic Compatibility protections is provided; can effectively protect photovoltaic charge controller and storage battery safety in actual applications; and extend the useful life of storage battery, make charging process in a safe condition all the time.
For realizing above-mentioned technical purpose, reach above-mentioned technique effect, the utility model provides a kind of independent photovoltaic charge controller with multi-protective function, comprise Buck translation circuit, control circuit, it is characterized in that: also comprise charge protector, Buck translation circuit input connects solar battery array output, described Buck translation circuit output connects the input of described charge protector, the output of described charge protector connects storage battery, the output of control circuit and Buck circuit, charge protector is connected, control for maximal power tracing and charging.
Described control circuit comprises single-chip microcomputer, signals collecting interface circuit and PWM drive circuit; an I/O interface of described single-chip microcomputer connects described charge protector; for controlling the realization of the various defencive functions of charge protector; the output of described charge protector feeds back to the A/D interface of described single-chip microcomputer by signals collecting interface circuit; another I/O interface of described single-chip microcomputer is also connected with PWM drive circuit, and described PWM drive circuit is connected to described Buck translation circuit.
Charge protector comprises two parts, a part is power end overvoltage, current foldback circuit, another part is electromagnetic interference shielding, instead fill protection, battery-end overcurrent protection and charging under-voltage protecting circuit, power end overvoltage, Vp+ with Vp-front end in current foldback circuit is connected with the both positive and negative polarity of Buck translation circuit output respectively, Vp+ rear end is connected with divider resistance R1 and R2, common port between R1 and R2 is connected to the positive input terminal of voltage comparator LM324, + 5v reference voltage is connect at the negative terminal of described voltage comparator, electric capacity C1 is added between the positive and negative end of voltage comparator.Voltage comparator LM324 rear end is connected with triode Q1, the collector electrode of this triode Q1 is connected to the base stage of triode Q2 by diode, the OV_C_P interface of single-chip microcomputer is connected to the base stage of triode Q2, the collector electrode of triode Q2 is connected to the base stage of triode Q3, and triode Q3 is connected with the IN mouth of power switch pipe BTS6133D by resistance R7.
Electromagnetic interference shielding, instead fill protection, Vbat+ with the Vbat-front end of battery-end overcurrent protection and charging under-voltage protecting circuit is connected with accumulator anode and cathode respectively, TVS pipe (transient voltage suppressor) is connected with after Vbat+, fusible link F1 is connected with after TVS pipe, OV_C_BAT front end is connected to the output pin of single-chip microcomputer, OV_C_BAT rear end is connected to the base stage of triode Q6, BAT_CHARGE_H front end is connected to the output pin of single-chip microcomputer, the rear end of BAT_CHARGE_H is connected to the base stage of triode Q5, the emitter of triode Q5 is connected to the collector electrode of triode Q6, the collector electrode of triode Q5 is connected to the emitter of triode Q4, the collector electrode of triode Q4 is connected with the IN mouth of power switch pipe BTS6133D by resistance R5.
The beneficial effects of the utility model are: achieve the safe and stable operation of independent photovoltaic array to charging process of storage battery set, the design adds multi-functional charge protector on the basis of original independent photovoltaic charge controller, photovoltaic array is made to have overvoltage protection in the charging process of storage battery, under-voltage protection, overcurrent protection, anti-reverse protection, the multi-protective functions such as Electro Magnetic Compatibility protection, improve the reliability of photovoltaic charge controller, reduce equipment failure rate, extend the useful life of batteries, reduce the operating cost of photovoltaic generation process.
Accompanying drawing explanation
Fig. 1 is independent photovoltaic charge controller general structure block diagram;
Fig. 2 is power end overvoltage, current foldback circuit schematic diagram;
Fig. 3 is electromagnetic interference shielding, instead fills protection, battery-end overcurrent protection and charging under-voltage protecting circuit schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail:
As shown in Figure 1, the utility model comprises control circuit, Buck circuit, charge protector to independent photovoltaic charge controller general structure block diagram, and the power that photovoltaic battery array sends charges to storage battery through the DC/DC converter be made up of Buck circuit.The output of photovoltaic array connects the input of Buck circuit, the output of Buck circuit connects the input of charging control circuit, the output of charging control circuit connects the input of batteries, the output of control circuit is connected with Buck circuit, charging control circuit, plays the effect of maximal power tracing and charging control.As shown in Figure 2, Vp+ with Vp-front end is connected with the both positive and negative polarity of Buck translation circuit output respectively, for detecting Buck translation circuit output voltage, Vp+ is connected with divider resistance R1 and R2, Buck output is detected voltage by R1 and R2, magnitude of voltage after its dividing potential drop gives the positive input terminal of voltage comparator LM324 as the voltage sample value of Buck translation circuit, + 5v reference voltage is connect at the negative terminal of described voltage comparator, for making comparisons with Buck translation circuit voltage sample value, because voltage comparator anode input voltage has voltage noise, therefore add electric capacity C1 between its ends between, to reduce its noise.When the voltage sample value of Buck translation circuit is greater than reference voltage+5v, comparator LM324 exports high level, the triode Q1 conducting be connected with comparator LM324, the triode Q2 collector potential be now connected with triode Q1 is zero, the triode Q3 be connected with triode Q2 turns off, triode Q3 is connected with the IN mouth of power switch pipe BTS6133D by resistance R7, because triode Q3 turns off, so the IN mouth of power switch pipe BTS6133D does not have conducting over the ground, power switch pipe BTS6133D is caused to turn off, Buck translation circuit output is connected cut-off with the circuit between storage battery input, achieve power end overvoltage protection.
Further, the OV_C_P state receiving single-chip microcomputer during system worked well is low level, namely triode Q2 is off, when single-chip microcomputer receives the order of power end overcurrent, the level of the single-chip microcomputer output pin connecting OV_C_P is set high, by Q2 conducting, such triode Q2 collector potential is dragged down equally, triode Q3 turns off, the IN mouth of power switch pipe BTS6133D does not have conducting over the ground, power switch pipe BTS6133D is caused to turn off, Buck translation circuit output is connected cut-off with the circuit between storage battery input, achieve the protection of power end overcurrent.
As shown in Figure 3, Vbat+ with Vbat-front end is connected with accumulator anode and cathode respectively, TVS pipe (transient voltage suppressor) is connected with after Vbat+, when the voltage at its two ends exceedes limit value, TVS pipe becomes short circuit failure mode, electric current is imported the earth, achieves the object of electromagnetic interference shielding, inhibitory action is played for lightning surge.
Further, be connected with fusible link F1, between terminal, install diode after TVS pipe, if misoperation, by reverse connection of accumulator, then just fusible link is opened a way, and protects circuit below, reaches the object of reverse connection of accumulator protection.
Further; OV_C_BAT is connected to the output pin of single-chip microcomputer; during system worked well; OV_C_BAT is set to high level by single-chip microcomputer; when microprocessor detect is greater than limit value to power end electric current; the level of OV_C_BAT sets low by single-chip microcomputer; the base voltage of triode Q6 is dragged down; triode Q6 turns off; the IN mouth of power switch pipe BTS6133D does not have conducting over the ground; cause power switch pipe BTS6133D to turn off, Buck translation circuit output is connected cut-off with the circuit between storage battery input, achieve battery-end overcurrent protection.
Further, BAT_CHARGE_H is connected to the output pin of single-chip microcomputer, during system worked well, BAT_CHARGE_H is set to high level by single-chip microcomputer, the BAT_CHARGE_H state receiving single-chip microcomputer is high level, i.e. Q5 conducting, when microprocessor detect is under-voltage to power end, the BAT_CHARGE_H storage battery be attached thereto sets low by single-chip microcomputer, the base voltage of triode Q5 is dragged down, triode Q5 turns off, the IN mouth of power switch pipe BTS6133D does not have conducting over the ground, power switch pipe BTS6133D is caused to turn off, Buck translation circuit output is connected cut-off with the circuit between storage battery input, achieve charging under voltage protection.
Claims (3)
1. one kind has the independent photovoltaic charge controller of multi-protective function; comprise Buck translation circuit, control circuit; it is characterized in that: also comprise charge protector; Buck translation circuit input connects solar battery array output; described Buck translation circuit output connects the input of described charge protector; the output of described charge protector connects storage battery; the output of control circuit is connected with Buck circuit, charge protector, controls for maximal power tracing and charging.
2. the independent photovoltaic charge controller with multi-protective function according to claim 1, it is characterized in that: described control circuit comprises single-chip microcomputer, signals collecting interface circuit and PWM drive circuit, an I/O interface of described single-chip microcomputer connects described charge protector, for controlling the realization of the various defencive functions of charge protector, the output of described charge protector feeds back to the A/D interface of described single-chip microcomputer by signals collecting interface circuit, another I/O interface of described single-chip microcomputer is also connected with PWM drive circuit, described PWM drive circuit is connected to described Buck translation circuit.
3. the independent photovoltaic charge controller with multi-protective function according to claim 1, it is characterized in that: charge protector comprises two parts, a part is power end overvoltage, current foldback circuit, another part is electromagnetic interference shielding, instead fill protection, battery-end overcurrent protection and charging under-voltage protecting circuit, power end overvoltage, Vp+ with Vp-front end in current foldback circuit is connected with the both positive and negative polarity of Buck translation circuit output respectively, Vp+ rear end is connected with divider resistance R1 and R2, common port between R1 and R2 is connected to the positive input terminal of voltage comparator LM324, + 5v reference voltage is connect at the negative terminal of described voltage comparator, electric capacity C1 is added between the positive and negative end of voltage comparator, voltage comparator LM324 rear end is connected with triode Q1, the collector electrode of this triode Q1 is connected to the base stage of triode Q2 by diode, the OV_C_P interface of single-chip microcomputer is connected to the base stage of triode Q2, the collector electrode of triode Q2 is connected to the base stage of triode Q3, triode Q3 is connected with the IN mouth of power switch pipe BTS6133D by resistance R7, electromagnetic interference shielding, instead fill protection, Vbat+ with the Vbat-front end of battery-end overcurrent protection and charging under-voltage protecting circuit is connected with accumulator anode and cathode respectively, TVS pipe is connected with after Vbat+, fusible link F1 is connected with after TVS pipe, OV_C_BAT front end is connected to the output pin of single-chip microcomputer, OV_C_BAT rear end is connected to the base stage of triode Q6, BAT_CHARGE_H front end is connected to the output pin of single-chip microcomputer, the rear end of BAT_CHARGE_H is connected to the base stage of triode Q5, the emitter of triode Q5 is connected to the collector electrode of triode Q6, the collector electrode of triode Q5 is connected to the emitter of triode Q4, the collector electrode of triode Q4 is connected with the IN mouth of power switch pipe BTS6133D by resistance R5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420455451.XU CN204068359U (en) | 2014-08-13 | 2014-08-13 | There is the independent photovoltaic charge controller of multi-protective function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420455451.XU CN204068359U (en) | 2014-08-13 | 2014-08-13 | There is the independent photovoltaic charge controller of multi-protective function |
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| CN204068359U true CN204068359U (en) | 2014-12-31 |
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| CN201420455451.XU Expired - Fee Related CN204068359U (en) | 2014-08-13 | 2014-08-13 | There is the independent photovoltaic charge controller of multi-protective function |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104810888A (en) * | 2015-04-20 | 2015-07-29 | 江苏品源电子科技有限公司 | Super capacitor charging-discharging and reverse protection circuit |
| CN105429586A (en) * | 2015-12-09 | 2016-03-23 | 深圳硕日新能源科技有限公司 | Maximum power point tracking control system |
-
2014
- 2014-08-13 CN CN201420455451.XU patent/CN204068359U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104810888A (en) * | 2015-04-20 | 2015-07-29 | 江苏品源电子科技有限公司 | Super capacitor charging-discharging and reverse protection circuit |
| CN105429586A (en) * | 2015-12-09 | 2016-03-23 | 深圳硕日新能源科技有限公司 | Maximum power point tracking control system |
| CN105429586B (en) * | 2015-12-09 | 2017-09-12 | 深圳硕日新能源科技有限公司 | A kind of maximum power point tracking system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141231 Termination date: 20150813 |
|
| EXPY | Termination of patent right or utility model |