CN103944511A - Calibration method for solar cells - Google Patents
Calibration method for solar cells Download PDFInfo
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- CN103944511A CN103944511A CN201410163875.3A CN201410163875A CN103944511A CN 103944511 A CN103944511 A CN 103944511A CN 201410163875 A CN201410163875 A CN 201410163875A CN 103944511 A CN103944511 A CN 103944511A
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- standard battery
- secondary standard
- solar cell
- scaling method
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Abstract
The invention provides a calibration method for solar cells. According to the calibration method, the primary standard cells are used for calibrating the secondary standard cells. The calibration method comprises the step one that a plurality of the solar cells are selected primarily to obtain the alternative secondary standard cells, and the alternative secondary standard cells experience the light failure process so as to be in the performance stable phase after light failure, and the step two that the primary standard cells are utilized for calibrating the alternative secondary standard cells which have experienced the light failure process, and if the alternative secondary standard cells conform to the calibration requirement, the alternative secondary standard cells can be used as the secondary standard cells. According to the technical scheme, performance of the secondary standard cells processed through the light failure is stable, the calibrated secondary standard cells after experiencing the light failure process are used as reference standards to detect the performance of the solar cells, and therefore the detection accuracy can be improved easily.
Description
Technical field
The present invention relates to a kind of scaling method of solar cell.
Background technology
Along with the intensified competition in photovoltaic market, Cost Competition is reached the decisive stage the stage, and each rival reduces production costs every possible means.Battery link is as an important step of producing, the staking-out work that the performance parameters of solar cell is demarcated to specification emphasis wherein especially.But the secondary standard number of batteries that demarcate every day for battery is larger, has increased demarcation expense, change frequently secondary standard battery also can affect the detection accuracy using secondary standard battery as examination criteria simultaneously.
Meanwhile, due to the light decay phenomenon of solar cell, can there is corresponding variation in the battery performance of calibrated solar energy, therefore affects the detection accuracy using secondary standard battery as examination criteria.Also be the reason that causes standard solar cells often need to demarcate.
Summary of the invention
The present invention aims to provide a kind of scaling method of solar cell, utilizes the accuracy of calibrated solar cell as the performance with reference to standard detection solar cell to improve.
To achieve these goals, the invention provides a kind of scaling method of solar cell, use primary standard battery to demarcate secondary standard battery, scaling method comprises: step S1: multiple solar cells are carried out to primary election, obtain alternative secondary standard battery, and make alternative secondary standard battery experience light decay process so that the stable performance phase of alternative secondary standard battery after light decay; Step S2: utilize primary standard battery to demarcate the alternative secondary standard battery of experience light decay process, if alternative secondary standard battery meets calibration request, using this alternative secondary standard battery as secondary standard battery.
Further, scaling method also comprises step S3: by calibrated secondary standard battery storing in anti-oxidation environment.
Further, scaling method also comprises step S4: calibrated secondary standard battery is regularly rechecked.
Further, primary standard battery comprises at least two the first main grid lines, alternative secondary standard battery comprises at least two the second main grid lines, step S2 comprises: at least two the first wire connecting portion that are electrically connected correspondingly with at least two the first main grid lines of primary standard battery are set, and the first wire connecting portion is electrically connected with the solar cell test equipment for demarcating; At least two the second wire connecting portion that are electrically connected correspondingly with at least two the second main grid lines of alternative secondary standard battery are set, and the second wire connecting portion is electrically connected with the solar cell test equipment for demarcating.
Further, in step S2, at least two the first main grid lines of primary standard battery, welding silver is with to form the first wire connecting portion respectively; And/or welding silver is with to form the second wire connecting portion respectively at least two the second main grid lines of alternative secondary standard battery.
Further, step S2 comprises: sub-step S21: calibration for the solar cell test equipment demarcated so that this solar cell test equipment in align mode; Sub-step S23: utilize the solar cell test equipment after calibration to carry out performance test to obtain nominal data to alternative secondary standard battery; Sub-step S25: whether the test result of the alternative secondary standard battery that checking obtains meets calibration request, if test result meets calibration request, adopts this alternative secondary standard battery as secondary standard battery.
Further, sub-step S21 comprises: adopt solar cell checkout equipment to test primary standard battery, if the data of measured primary standard battery and the difference of original performance data are no more than first threshold, solar cell test equipment is in align mode.
Further, solar cell checkout equipment to the test of primary standard battery and alternative secondary standard battery all at identical temperature, carry out under identical irradiance.
Further, step S2 is also included in the sub-step S24 carrying out after sub-step S23: solar cell checkout equipment is demarcated to rear checking, comprise and utilize solar cell test equipment to carry out performance test to primary standard battery, if the data of measured primary standard battery and the difference of original performance data are no more than Second Threshold, continue sub-step S25, if the data of measured primary standard battery and the difference of original performance data exceed Second Threshold, repeated execution of steps S2.
Further, utilize the solar cell test equipment after calibration to carry out at least twice performance test to alternative secondary standard battery, be taken to less the mean value of the test result of twice performance test as nominal data.
Further, primary standard battery is carried out to performance test with the solar cell test equipment after calibration, calibration request comprises that the difference of the nominal data of the alternative secondary standard battery recording and the data of measured primary standard battery is less than the 3rd threshold value.
Apply technical scheme of the present invention, use primary standard battery to demarcate secondary standard battery, multiple solar cells are carried out to primary election, obtain alternative secondary standard battery, and make alternative secondary standard battery experience light decay process so that the stable performance phase of alternative secondary standard battery after light decay; Utilize primary standard battery to demarcate the alternative secondary standard battery of experience light decay process, if alternative secondary standard battery meets calibration request, using this alternative secondary standard battery as secondary standard battery.Apply technical scheme of the present invention, stable through light decay secondary standard solar cell properties after treatment, utilize the secondary standard battery of demarcating after light decay process as the performance with reference to standard detection solar cell, be conducive to improve the accuracy detecting.
Brief description of the drawings
The Figure of description that forms the application's a part is used to provide a further understanding of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the flow chart of the scaling method of the solar cell of the embodiment of the present invention.
Embodiment
It should be noted that, in the situation that not conflicting, the feature in embodiment and embodiment in the application can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the present invention in detail.
As shown in Figure 1, the scaling method of the solar cell of the embodiment of the present invention, uses primary standard battery to demarcate secondary standard battery, and scaling method comprises:
Step S1: multiple solar cells are carried out to primary election, obtain alternative secondary standard battery, and make the stable performance phase of alternative secondary standard battery after light decay.
Step S2: utilize primary standard battery to carry out the alternative secondary standard battery of experience light decay process, if alternative secondary standard battery meets calibration request, using this alternative secondary standard battery as secondary standard battery.
In prior art, the secondary standard battery that primary standard battery is demarcated does not experience light decay process, and secondary standard battery is not in the stable performance phase.Therefore use secondary standard battery is afterwards as in the process with reference to standard detection solar cell, and secondary standard battery can be because occurring that light decay problem produces the variation of performance, so that affect testing result.
In the present embodiment, using primary standard battery to demarcate between secondary standard battery, secondary standard battery has experienced light decay process, in the stable performance phase.Therefore, use the electric property of the secondary standard battery detecting solar cell of the scaling method demarcation of the present embodiment, be conducive to improve accuracy of detection.
In the present embodiment, in order to prevent that calibrated secondary standard battery from the conversion of performance occurring in the process of depositing, by calibrated secondary standard battery storing in anti-oxidation environment.
Preferably, in the dry environment that secondary standard battery storing can be anti-oxidation in nitrogen cabinet, drying basin etc., and ambient temperature remains on 25 DEG C ± 2 DEG C.
In order to reduce further because the performance change of secondary standard battery produces the impact on testing result, also to regularly recheck calibrated secondary standard battery.
The calibration value of secondary standard battery will intersect contrast once every three months, if short circuit current difference △ Isc≤± 1% of two secondary standard batteries of comparing can continue to use; If exceed above regulation, this secondary standard battery should be stopped using.
Secondary standard battery should prevent damage, pollute and decay.When secondary standard battery occurs that any meeting damages the phenomenon of its performance, all should stop using.
Because the performance of solar cell can change, therefore primary standard battery and secondary standard battery all have certain useful life.The primary standard battery term of validity is 12 months, and the secondary standard battery term of validity is 6 months.
For fear of damage primary standard battery and secondary standard battery in the process using and demarcate, in the process using and demarcate, all should handle with care.
Should meet following condition as alternative secondary standard battery;
1. the short circuit current of alternative secondary standard battery and fill factor, curve factor should mate within ± 0.51%;
2. the production technology of alternative secondary standard battery is identical with the production technology of tested battery;
3. the geometric identity of alternative secondary standard battery, efficiency section identical (generally selecting average efficiency section and high efficiency section battery), and must be without the hidden situations such as grid of splitting, break.
Then the alternative secondary standard battery that meets above-mentioned condition is positioned over to experience in ageing testing equipment and irradiates, so that its experience light decay process is so that its stable performance phase after light decay.In this light decay process, under the irradiation of the light that alternative secondary standard battery is 1KW/m2 at irradiance 24 hours.
Primary standard battery comprises at least two the first main grid lines.Alternative secondary standard battery comprises at least two the second main grid lines.Use primary standard battery demarcate the process of alternative secondary standard battery in and use primary standard battery and/or secondary standard battery as the process with reference to standard detection solar cell in, all need to realize being electrically connected of solar cell checkout equipment and standard cell.
In prior art, in order to realize being electrically connected of solar cell checkout equipment and solar cell (comprising primary standard battery, secondary standard battery and alternative secondary standard battery).Need to use probe to penetrate the main grid line of solar cell, this method of operation has not only reduced operating efficiency, and solar cell is caused to certain damage.
In order to address this problem, the step S2 of the scaling method of the solar cell of the present embodiment comprises at least two the first wire connecting portion that setting is electrically connected correspondingly with at least two the first main grid lines of primary standard battery, and the first wire connecting portion is electrically connected with the first wire connecting portion with the solar cell test equipment for demarcating.
The step S2 of the scaling method of the solar cell of the present embodiment also comprises at least two the second wire connecting portion that are electrically connected correspondingly with at least two the second main grid lines of alternative secondary standard battery that experienced light decay process is set, and the second wire connecting portion is electrically connected with the second wire connecting portion with the solar cell test equipment for demarcating.
Preferably, at least two the first main grid lines of primary standard battery, welding silver is with to form the first wire connecting portion respectively.And/or welding silver is with to form the second wire connecting portion respectively at least two the second main grid lines of alternative secondary standard battery that experienced light decay process.
Silver, with superior electric conductivity, has reduced the resistance of conducting wire effectively.Be conducive to improve the accuracy of detection of solar cell checkout equipment to solar cell.
Complete the above-mentioned following step of carrying out after the first wire connecting portion being set and the step of the second wire connecting portion being set:
Sub-step S21: calibration for the solar cell test equipment demarcated so that this solar cell test equipment in align mode.
Sub-step S23: utilize the solar cell test equipment after calibration to carry out performance test to obtain nominal data to alternative secondary standard battery.
Sub-step S25: whether the test result of the alternative secondary standard battery that checking obtains meets calibration request, if test result meets calibration request, adopts this alternative secondary standard battery as secondary standard battery.
Preferably, sub-step S21 comprises: adopt solar cell checkout equipment to test primary standard battery, if the data of measured primary standard battery and the difference of original performance data are no more than first threshold, solar cell test equipment is in align mode.If demarcated according to short circuit current, the difference of the original short circuit current that the short circuit of test primary standard battery and authoritative laboratory demarcate meets △ Isc≤± 0.15A, and solar cell test equipment is in align mode.
Preferably, utilize the solar cell test equipment after calibration to carry out at least twice performance test to alternative secondary standard battery, be taken to less the mean value of the test result of twice performance test as nominal data.
Solar cell checkout equipment to the test of primary standard battery and alternative secondary standard battery all at identical temperature, carry out under identical irradiance.
Solar cell checkout equipment is in the testing process of one-level solar energy standard cell and alternative secondary standard battery, and the temperature of ambient temperature and tested battery all should maintain 25 ± 2 DEG C.Solar cell checkout equipment carries out under 1000W/m2 irradiance the detection of one-level solar energy standard cell and alternative secondary standard battery.
Step S2 is also included in the sub-step S24 carrying out after sub-step S23: solar cell checkout equipment is demarcated to rear checking, comprise and utilize solar cell test equipment to carry out performance test to primary standard battery, if the data of measured primary standard battery and the difference of original performance data are no more than Second Threshold, continue sub-step S25, if the data of measured primary standard battery and the difference of original performance data exceed Second Threshold, repeated execution of steps S2.
After being demarcated, solar cell checkout equipment is verified as primary standard battery retest at least 2 times, then the difference of short circuit current original the primary standard battery of the data obtained and the demarcation of authoritative laboratory is met to △ Isc≤± 0.15A, continue sub-step S25, on the contrary repeated execution of steps S2.
Above-mentioned calibration request comprises checking through calibrated alternative secondary standard battery, if do not have fragment, the hidden problem of appearance such as split can carry out next step and check and accept, if had, cannot serve as secondary standard battery and use.
Above-mentioned calibration request also comprises that the difference of the nominal data of the alternative secondary standard battery recording and the data of measured primary standard battery is less than the 3rd threshold value.Meeting the alternative secondary standard battery of above-mentioned requirements and the contrast of the primary standard battery of same model, if the difference of the original short circuit current of the primary standard battery that the nominal data of secondary standard battery and authoritative laboratory demarcate meets △ Isc≤± 0.15A requirement, this alternative secondary standard battery can be served as secondary standard battery.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (11)
1. a scaling method for solar cell, uses primary standard battery to demarcate secondary standard battery, it is characterized in that, described scaling method comprises:
Step S1: multiple solar cells are carried out to primary election, obtain alternative secondary standard battery, and make described alternative secondary standard battery experience light decay process so that the stable performance phase of described alternative secondary standard battery after light decay;
Step S2: utilize described primary standard battery to demarcate the described alternative secondary standard battery of experience light decay process, if described alternative secondary standard battery meets calibration request, using this alternative secondary standard battery as secondary standard battery.
2. scaling method according to claim 1, is characterized in that, described scaling method also comprises step S3: by calibrated described secondary standard battery storing in anti-oxidation environment.
3. according to the scaling method described in any one in claim 1, it is characterized in that, described scaling method also comprises step S4: calibrated described secondary standard battery is regularly rechecked.
4. scaling method according to claim 1, is characterized in that, described primary standard battery comprises at least two the first main grid lines, and described alternative secondary standard battery comprises at least two the second main grid lines, and described step S2 comprises:
At least two the first wire connecting portion that are electrically connected correspondingly with described at least two the first main grid lines of described primary standard battery are set, and described the first wire connecting portion is electrically connected with the solar cell test equipment for demarcating;
At least two the second wire connecting portion that are electrically connected correspondingly with described at least two the second main grid lines of described alternative secondary standard battery are set, and described the second wire connecting portion is electrically connected with the solar cell test equipment for demarcating.
5. scaling method according to claim 4, is characterized in that, in described step S2, at least two described the first main grid lines of described primary standard battery, welding silver is with to form described the first wire connecting portion respectively; And/or welding silver is with to form described the second wire connecting portion respectively at least two described the second main grid lines of described alternative secondary standard battery.
6. scaling method according to claim 1, is characterized in that, described step S2 comprises:
Sub-step S21: calibration for the solar cell test equipment demarcated so that this solar cell test equipment in align mode;
Sub-step S23: utilize the described solar cell test equipment after calibration to carry out performance test to obtain nominal data to described alternative secondary standard battery;
Sub-step S25: whether the test result of the described alternative secondary standard battery that checking obtains meets calibration request, if described test result meets calibration request, adopts this alternative secondary standard battery as secondary standard battery.
7. scaling method according to claim 6, it is characterized in that, described sub-step S21 comprises: adopt described solar cell checkout equipment to test described primary standard battery, if the data of measured described primary standard battery and the difference of original performance data are no more than first threshold, described solar cell test equipment is in described align mode.
8. scaling method according to claim 7, is characterized in that, described solar cell checkout equipment to the test of described primary standard battery and described alternative secondary standard battery all at identical temperature, carry out under identical irradiance.
9. scaling method according to claim 6, it is characterized in that, described step S2 is also included in the sub-step S24 carrying out after sub-step S23: described solar cell checkout equipment is demarcated to rear checking, comprise and utilize described solar cell test equipment to carry out performance test to described primary standard battery, if the data of measured described primary standard battery and the difference of original performance data are no more than Second Threshold, continue described sub-step S25, if the data of measured described primary standard battery and the difference of original performance data exceed Second Threshold, repeat described step S2.
10. scaling method according to claim 6, it is characterized in that, utilize the described solar cell test equipment after calibration to carry out at least twice performance test to described alternative secondary standard battery, described in getting, the mean value of the test result of at least twice performance test is as described nominal data.
11. according to the scaling method described in any one in claim 7 to 10, it is characterized in that, utilize the described solar cell test equipment after calibration to carry out performance test to described primary standard battery, described calibration request comprises that the difference of the nominal data of the described alternative secondary standard battery recording and the data of measured described primary standard battery is less than the 3rd threshold value.
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| CN201410163875.3A CN103944511A (en) | 2014-04-22 | 2014-04-22 | Calibration method for solar cells |
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| CN201410163875.3A CN103944511A (en) | 2014-04-22 | 2014-04-22 | Calibration method for solar cells |
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| CN104579169A (en) * | 2014-12-25 | 2015-04-29 | 黄河水电光伏产业技术有限公司 | Light intensity calibration method used for solar battery piece testing device |
| CN106645307A (en) * | 2016-08-24 | 2017-05-10 | 浙江朗德电子科技有限公司 | Calibration method of vehicle tail gas sensor resistor |
| CN108198907A (en) * | 2017-12-30 | 2018-06-22 | 苏州阿特斯阳光电力科技有限公司 | A kind of determining method and device of silicon chip |
| CN109037091A (en) * | 2018-06-12 | 2018-12-18 | 泰州隆基乐叶光伏科技有限公司 | A kind of slice battery reference plate and its scaling method |
| CN112217474A (en) * | 2020-09-14 | 2021-01-12 | 中国电子科技集团公司第十八研究所 | Calibration and use method of space triple-junction gallium arsenide working standard solar cell |
| CN113900057A (en) * | 2021-09-09 | 2022-01-07 | 天合光能(宿迁)光电有限公司 | Method for checking and detecting measuring equipment before and after test box replacement |
| CN114244276A (en) * | 2021-12-21 | 2022-03-25 | 成都中建材光电材料有限公司 | Cadmium telluride standard solar cell calibration, storage and use method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104579169A (en) * | 2014-12-25 | 2015-04-29 | 黄河水电光伏产业技术有限公司 | Light intensity calibration method used for solar battery piece testing device |
| CN106645307A (en) * | 2016-08-24 | 2017-05-10 | 浙江朗德电子科技有限公司 | Calibration method of vehicle tail gas sensor resistor |
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| CN109037091A (en) * | 2018-06-12 | 2018-12-18 | 泰州隆基乐叶光伏科技有限公司 | A kind of slice battery reference plate and its scaling method |
| CN109037091B (en) * | 2018-06-12 | 2021-06-15 | 泰州隆基乐叶光伏科技有限公司 | Sliced battery reference piece and calibration method thereof |
| CN112217474A (en) * | 2020-09-14 | 2021-01-12 | 中国电子科技集团公司第十八研究所 | Calibration and use method of space triple-junction gallium arsenide working standard solar cell |
| CN112217474B (en) * | 2020-09-14 | 2023-06-16 | 中电科蓝天科技股份有限公司 | Calibration and use method of three-junction gallium arsenide working standard solar cell for space |
| CN113900057A (en) * | 2021-09-09 | 2022-01-07 | 天合光能(宿迁)光电有限公司 | Method for checking and detecting measuring equipment before and after test box replacement |
| CN113900057B (en) * | 2021-09-09 | 2023-08-29 | 天合光能(宿迁)光电有限公司 | Method for checking, detecting and measuring equipment before and after replacement of test box |
| CN114244276A (en) * | 2021-12-21 | 2022-03-25 | 成都中建材光电材料有限公司 | Cadmium telluride standard solar cell calibration, storage and use method |
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