CN202256637U - Device for measuring characteristic of solar cell - Google Patents
Device for measuring characteristic of solar cell Download PDFInfo
- Publication number
- CN202256637U CN202256637U CN2011203590163U CN201120359016U CN202256637U CN 202256637 U CN202256637 U CN 202256637U CN 2011203590163 U CN2011203590163 U CN 2011203590163U CN 201120359016 U CN201120359016 U CN 201120359016U CN 202256637 U CN202256637 U CN 202256637U
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- Prior art keywords
- solar cell
- operational amplifier
- resistance
- input end
- measuring
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- Testing Of Individual Semiconductor Devices (AREA)
Abstract
The utility model relates to a device for measuring the characteristic of a solar cell, which is characterized in that a Rw and an S are connected in parallel after an R1 and an R2 are connected in series, and the R1 and the R2 are grounded; the anode of a measured solar cell is connected with a sliding arm of the Rw, and the cathode of the measured solar cell is connected with the cathode of the input end of an operational amplifier; the anode of the input end of the operational amplifier is grounded; and a resistor Rf is connected with the cathode of the input end of the operational amplifier and the output end of the operational amplifier in parallel. According to the device for measuring the characteristic of the solar cell, voltage signals and current signals of the solar cell are tested by simple electronic elements, the circuit design is simple and the method is convenient to implement.
Description
Technical field
The present invention relates to a kind of device of measuring the solar cell characteristic, can be convenient to measure fast and effectively, belong to the test equipment of solar cells development field in the laboratory.
Background technology
Solar cell is as a kind of device that directly sun power is converted into electric energy; Yet the material of when making solar cell, choosing; Factor such as manufacture craft and external environment all can affect to this switching device performance; The quality of device performance directly has influence on the height of the conversion efficiency of solar cell so, and therefore measuring accurately through the correlation parameter of device is the only way which must be passed of this device of check.
Working mechanism according to solar cell; Through the design external circuit this intrinsic propesties's measurement of solar cell is come out; Volt-ampere characteristic is the topmost parameter of solar cell; The output power that has directly reflected battery, the VA characteristic curve that obtains solar cell through test has important meaning for the development of solar cell.
Test approach commonly used at present has: the one, utilize bridge method, and read a drawing through the discrete measurement of voltage table and reometer and obtain more rough volt-ampere curve; The 2nd, utilize special-purpose solar cell testing apparatus.The former test operation is loaded down with trivial details, and test speed is slow, can not provide solar cell I-V curve automatically, and precision is low; Though latter's precision is high, but realize all automatic measurement, but equipment price is expensive, uses reality inadequately for the laboratory.In order to overcome the shortcoming of the two, realize the measurement of solar cell volt-ampere characteristic,
Summary of the invention
The technical matters that solves
For fear of the weak point of prior art, the present invention proposes a kind of device of measuring the solar cell characteristic, and it is higher to utilize this device that the solar cell characteristic is carried out degree of accuracy, cheap, measure efficiently.
Technical scheme
A kind of device of measuring the solar cell characteristic is characterized in that comprising resistance R
1, R
2, R
wAnd R
f, also comprise power supply S and operational amplifier; R
1And R
2Series connection back and R
wWith the S parallel connection, and R
1And R
2Between ground connection; The positive pole of tested solar cell and R
wTravelling arm connect, the negative pole of shoot the sun battery connects the negative pole of operational amplifier input end, the plus earth of operational amplifier input end; Resistance R
fBe parallel to the negative pole and the operational amplifier output terminal of operational amplifier input end; Said resistance R
1=R
2
Said resistance R
wBe slide rheostat, maximum value is 1000 ohm.
Said resistance R
fBe slide rheostat, maximum value is 500 ohm.
Beneficial effect
A kind of device of measuring the solar cell characteristic that the present invention proposes is tested the voltage signal and the current signal of solar cell through the composition of simple electronic component, and circuit design is simple, and method is convenient to implement.If this device is combined with computing machine, utilize the matlab program to carry out back-end data again and handle, can realize more that then the time is fast, cost is low, is convenient to breadboard measurement and uses.
Description of drawings
Fig. 1: circuit theory diagrams of the present invention
Embodiment
Combine embodiment, accompanying drawing that the present invention is further described at present:
The design of proving installation, purpose are to obtain the output voltage and the output current two paths of signals of solar cell, change the output voltage of solar cell through the variable active load of being made up of power supply and resistance.Because data collecting card can only be gathered voltage signal, so adopt integrated transporting discharging OP07 to realize that current conversion is a voltage.Accurately choose adjustable resistance for what measure, make measuring-signal within suitable scope.
Test circuit according to designing is welded on circuit board with electronic component, adopts lead that individual element is welded on bread board earlier in order to reduce cost, with solar cell place in circuit to be measured.
Accompanying drawing 1 is the circuit design drawing of the embodiment of the invention 1, comprising by two rheochord R
wAnd R
f, resistance R
wBe slide rheostat, maximum value is 1000 ohm; Resistance R
fBe slide rheostat, maximum value is 500 ohm.Two fixed value resistance R
1And R
2, R
1And R
2It is 500 ohm.An operational amplifier (OP07), a direct supply (power supply being provided for load circuit and OP07) simulated solar light source and solar cell to be tested.R
1And R
2Series connection back and R
wWith the S parallel connection, and R
1And R
2Between ground connection; The positive pole of tested solar cell and R
wTravelling arm connect, the negative pole of shoot the sun battery connects the negative pole of operational amplifier input end, the plus earth of operational amplifier input end; Resistance R
fBe parallel to the negative pole and the operational amplifier output terminal of operational amplifier input end.
In experiment test, because R in each change active load
wIn very little scope,,, regulate R through grasping the output rule of institute's shoot the sun battery after repeatedly measuring so the output signal of solar cell is relatively stable
fBe a fixed value, be adjusted to 240 ohm here, it is the dry cell of 18V that power supply S adopts voltage.The output current I of battery
iConvert voltage signal V into through amplifier Op07
Ii, V is arranged according to the empty disconnected and empty short characteristic of amplifier
Ii=-I
iR
f
Change the output voltage of solar cell through the variable active load of forming by power supply and resistance.Because PCI1710L model data collecting card can only be gathered voltage signal, so need convert output current into voltage signal.Realize the conversion between the current/voltage through integrated operational amplifier Op07.The output voltage V of battery is through S, R and R
wThe variable active load of forming is controlled, through regulating R
w, can realize the continuous variation of solar cell from the reverse biased to the forward bias.The output current I of battery converts voltage signal V into through amplifier Op07
I, V is arranged according to the empty disconnected and empty short characteristic of amplifier
I=-IR
f
In the active load change procedure, the magnitude of solar cell output current can have greatly changed, so change R
fSize can obtain the voltage signal of different magnitudes, through changing R
fSize make the signal amplitude be input to data collecting card in suitable scope, with guarantee to gather accurately.In experiment test, because the R in each active load that changes
wIn very little scope, so the output signal of solar cell is relatively stable, through grasping the output rule of institute's shoot the sun battery after repeatedly measuring, we just can be with regulating R
fRemain unchanged a suitable value, reduce the number that we regulate rheochord, more help grasping when the regulating active pull-up circuit solar cell output rule under from reverse biased to the forward bias variable effect.
Claims (3)
1. a device of measuring the solar cell characteristic is characterized in that comprising resistance R
1, R
2, R
wAnd R
f, also comprise power supply S and operational amplifier; R
1And R
2Series connection back and R
wWith the S parallel connection, and R
1And R
2Between ground connection; The positive pole of tested solar cell and R
wTravelling arm connect, the negative pole of shoot the sun battery connects the negative pole of operational amplifier input end, the plus earth of operational amplifier input end; Resistance R
fBe parallel to the negative pole and the operational amplifier output terminal of operational amplifier input end; Said resistance R
1=R
2
2. the device of measurement solar cell characteristic according to claim 1 is characterized in that: said resistance R
wBe slide rheostat, maximum value is 1000 ohm.
3. the device of measurement solar cell characteristic according to claim 1 is characterized in that: said resistance R
fBe slide rheostat, maximum value is 500 ohm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203590163U CN202256637U (en) | 2011-09-22 | 2011-09-22 | Device for measuring characteristic of solar cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203590163U CN202256637U (en) | 2011-09-22 | 2011-09-22 | Device for measuring characteristic of solar cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202256637U true CN202256637U (en) | 2012-05-30 |
Family
ID=46117856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203590163U Expired - Fee Related CN202256637U (en) | 2011-09-22 | 2011-09-22 | Device for measuring characteristic of solar cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202256637U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102445645A (en) * | 2011-09-22 | 2012-05-09 | 西北工业大学 | Device and test method for measuring solar cell characteristic |
-
2011
- 2011-09-22 CN CN2011203590163U patent/CN202256637U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102445645A (en) * | 2011-09-22 | 2012-05-09 | 西北工业大学 | Device and test method for measuring solar cell characteristic |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zheng Jianbang Inventor after: Jiang Bingyi Inventor after: Wang Chunfeng Inventor after: Hao Juan Inventor after: Cao Chongde Inventor before: Zheng Jianbang Inventor before: Jiang Bingyi Inventor before: Wang Chunfeng Inventor before: Hao Juan |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: ZHENG JIANBANG JIANG BINGYI WANG CHUNFENG HAO JUAN TO: ZHENG JIANBANG JIANG BINGYI WANG CHUNFENG HAO JUAN CAO CHONGDE |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20140922 |
|
| EXPY | Termination of patent right or utility model |