CN201311448Y - No-load voltage detection circuit for solar cell panel - Google Patents
No-load voltage detection circuit for solar cell panel Download PDFInfo
- Publication number
- CN201311448Y CN201311448Y CNU2008201598506U CN200820159850U CN201311448Y CN 201311448 Y CN201311448 Y CN 201311448Y CN U2008201598506 U CNU2008201598506 U CN U2008201598506U CN 200820159850 U CN200820159850 U CN 200820159850U CN 201311448 Y CN201311448 Y CN 201311448Y
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- resistor
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- capacitor
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- 238000001514 detection method Methods 0.000 title claims abstract description 7
- 239000003990 capacitor Substances 0.000 abstract description 10
- 230000000694 effects Effects 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
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Abstract
The utility model relates to a no-load voltage detection circuit of a solar panel, which has the structure that the anode of the solar panel is connected with the anode of a storage battery and is connected with one end of a first resistor; the negative electrode of the storage battery is connected with the positive electrode of the second diode and is connected with one end of the third resistor, the capacitor and the switch; the other end of the third resistor is connected with the negative electrode of the second diode, connected with one end of the fourth resistor and one end of the second resistor, and the other end of the fourth resistor is connected with the other end of the capacitor; the contact point of the fourth resistor and the capacitor is connected with the detection signal input end of the singlechip; the other end of the second resistor is connected with the anode of the first diode and the other end of the first resistor; the cathode of the first diode is connected with the cathode of the solar panel and is connected with the other end of the switch. The advantages are that: the single-chip microcomputer LDO power supply has the advantages of simple structure, high reliability and good flexibility, the selection range of the LDO of the positive power supply for power supply of the single-chip microcomputer is wide, the power consumption is small, and the self power consumption of the LDO can be limited to the microampere level. Can give full play to other functions of the singlechip.
Description
Technical field
The utility model relates to a kind of controller for solar that detects solar panels voltage, belong to sun power control technology field.
Background technology
Controller for solar of the prior art all is to detect solar panels voltage to adopt detection of negative pressure, adopt the detection of negative pressure shortcoming: dirigibility is poor, and the power supply of single-chip microcomputer can only be adopted the LDO of negative supply, and range of choice is narrow, power consumption is bigger, and the oneself power consumption of LDO may be limited to several milliamperes.Much other functions of single-chip microcomputer have been limited like this.
Summary of the invention
The utility model is intended to overcome the above-mentioned defective of existing in prior technology, proposes a kind of controller for solar that detects solar panels voltage.It is good to have dirigibility, can give full play to other functions of single-chip microcomputer.
Technical solution of the present utility model: its structure is the positive pole that the positive pole of solar panels S directly connects accumulator, its contact links to each other with an end of resistance R 1, the negative pole of accumulator connects the positive pole of diode D2, its contact links to each other with the end of resistance R 3 with capacitor C 1 and switch S 1, the other end of resistance R 3 links to each other with the negative pole of diode D2, its contact links to each other with an end of resistance R 4 and resistance R 2, the other end of R4 links to each other with the other end of capacitor C 1, AD is resistance R 4 and capacitor C 1 contact, it also is the signal lines that enters single-chip microcomputer, resistance R 2 other ends link to each other with the positive pole of diode D1, its contact links to each other with the other end of resistance R 1, the negative pole of diode D1 links to each other with the negative pole of solar panels, and its contact links to each other with the other end of switch S 1.
Advantage of the present utility model: it is good to have a dirigibility, can give full play to other functions of single-chip microcomputer.
Description of drawings
Accompanying drawing 1 is an electrical schematic diagram of the present utility model.
Embodiment
Switch S 1 closure during described charging, electric current flows to the positive pole of accumulator from the positive pole of solar panel S, negative pole from accumulator charges a battery through the negative pole that switch S 1 flows to solar panel S again, resistance R 1 provides forward voltage for diode D1 anode, guarantee diode D1 conducting, resistance R 2 and R3 play the effect of dividing potential drop, guarantee to enter the voltage of single-chip microcomputer less than its rated voltage.
S is a solar panel, and solar panel is that transform light energy is become electric energy, and the branch of monocrystalline silicon, polysilicon, amorphous silicon is arranged.B is that accumulator accumulator commonly used has acid accumulator and alkaline storage battery, and according to the actual operating position of photovoltaic generating system, the common accumulator of adapted generally has lead-acid accumulator, cadmium-nickel accumulator and modern accumulator plant thereof with it.Single-chip microcomputer is to finish user's requirement by coding, what we adopted is the 80C51 series monolithic, AD is the detection signal that enters single-chip microcomputer, calculate solar cell panel voltages by software behind the voltage that single chip computer measurement is ordered to AD, the effect of diode D2 is when preventing that switch S 1 from disconnecting, solar panels overtension, the tie point of resistance R 3 and resistance R 2 negative voltage occurs and enter single-chip microcomputer through resistance R 4 by the signal lines AD of single-chip microcomputer, thereby burn out single-chip microcomputer.Resistance R 4 plays the effect of a current limliting, and capacitor C 1 is filter action.
Claims (1)
1, a kind of solar panel no-load voltage testing circuit is characterized in that the positive pole of solar panels S directly connects the positive pole of accumulator (B), and its contact links to each other with an end of first resistance (R1); The negative pole of accumulator (B) connects the positive pole of second diode (D2), and its contact links to each other with the 3rd resistance (R3), first electric capacity (C1) and an end of switch (S1); The other end of the 3rd resistance (R3) links to each other with the negative pole of second diode (D2), and its contact links to each other with the end of the 4th resistance (R4) with second resistance (R2), and the other end of the 4th resistance (R4) links to each other with the other end of electric capacity (C1); The 4th resistance (R4) is connected the detection signal input end of single-chip microcomputer with the contact signal lines (AD) of first electric capacity (C1); Second resistance (R2) other end links to each other with the positive pole of first diode (D1), and its contact links to each other with the other end of first resistance (R1); The negative pole of first diode (D1) links to each other with the negative pole of solar panels, and its contact links to each other with the other end of switch (S1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201598506U CN201311448Y (en) | 2008-10-24 | 2008-10-24 | No-load voltage detection circuit for solar cell panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201598506U CN201311448Y (en) | 2008-10-24 | 2008-10-24 | No-load voltage detection circuit for solar cell panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201311448Y true CN201311448Y (en) | 2009-09-16 |
Family
ID=41108706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201598506U Expired - Lifetime CN201311448Y (en) | 2008-10-24 | 2008-10-24 | No-load voltage detection circuit for solar cell panel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201311448Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103558483A (en) * | 2013-11-18 | 2014-02-05 | 宁波钜隆电子科技有限公司 | Charging equipment non-load detecting method and device, MCU and power supply equipment connecting wire |
| CN103765726A (en) * | 2010-11-02 | 2014-04-30 | 法国毕蓬多夫公司 | Controlling dynamic systems by measuring the no-load voltage of a photovoltaic generator |
-
2008
- 2008-10-24 CN CNU2008201598506U patent/CN201311448Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103765726A (en) * | 2010-11-02 | 2014-04-30 | 法国毕蓬多夫公司 | Controlling dynamic systems by measuring the no-load voltage of a photovoltaic generator |
| CN103558483A (en) * | 2013-11-18 | 2014-02-05 | 宁波钜隆电子科技有限公司 | Charging equipment non-load detecting method and device, MCU and power supply equipment connecting wire |
| CN103558483B (en) * | 2013-11-18 | 2016-08-31 | 宁波钜隆电子科技有限公司 | Charging equipment zero load detection method, device, MCU and power supply unit connecting line |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090916 |